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Патент USA US2110755

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. March 8,v "1938.
P. A. BLEAKLEY
2,110,755 "
METHOD AND ARPARATUS FOR APPLYING METAL COATINGS
- Firled Feb. 7, 1953
~
5 sheets-.s'heet 1'
5
iii.
" . ° ;
o
jNvENTOR :
-
FURUNGA.BL£AKLEY
.ATT'oRNEY
March'S, 1938.‘
w
_ ‘P.'A‘. BLEAKLEY ‘
."2,‘1 10,155
METHOD AND APPARATUS FOR APPLYING METAL COATINGS
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an
.%/a/ / /li.- .
' March 8, 1938.
2,110,755
P. A. BLEAKLEY
METHOD AND APPARATUS FOR APPLYING METAL COATiNGS
Filed Feb. '7,‘ 1933
5 Sheets-Sheet 5
INVENTOR
Pm w6
'
A 5.I EM‘m..Y
AT'TORNEY
2,110,755
Patented‘ Mar. 8, 1,938‘ »
UNITED STATES mcrENTv OFFICE
2,110,755
‘METHOD AND APPARATUS FOR APPLYING
METAL COATINGS
,
Purling A. Bleakley, Hollywood, Calif., assignor,
by mesne assignments, to The Gillord Corpora
tion, a corporation of Delaware
'
Application February 7,- 1933, Serial No. 655,610
26 Claims. '(01. 91-122)
‘This invention has to ‘do _in a general way with
the art of surfacing articles or objects, such as
the interior of cylindrical objects, and is more
particularly related to a method and apparatus
for applying a hard metal surface having a high
co-e?icient of friction and. a consequent high
gripping action to the wearing surface of arti
' cles such as brake drums or the like, although the
invention is 'not limited to that use.
.
10
The method and apparatus contemplated by
this invention are especially adapted for use in
reclaiming scored or worn brake drums, but they
may, also, in view of the very desirable charac
teristics produced in the wearing surface, find
15 useful application in the production of new brake
drums as’well as for‘various surfacing purposes.
The surface ‘referred to above in the method
sprayed by means ‘of a high velocity blast of
compressed air. However, it is a primary object
of this invention to produce a machine whereby
a, gun of the class described may be used to lay
a uniformly matted coating which is made up of
overlapping layersvof the type referredto above.
It is a further object of this invention to pro
duce a machine of the class described wherein a
plurality of drums or other articles may be si
multaneously coated in ‘the manner referred to.
In this connection, it is an important feature of
the machine contemplated by this invention that
surfaced drums maybe replaced with unsurfaeed
drums during the surfacing of another set of
drums.
'
15
_
The machine contemplated by this invention
consists in a general way of a table which is ro
contemplated by this invention, is obtained by‘ tatably supported 'upon suitable supporting
spraying the wearing surface of the drums ‘with
hot metal in a manner such that the deposited
coating comprises a porous mat which is formed
of overlapping layers of metal particles bonded
to each other and to the drum. By laying the
sprayed metal onto the wearing surface in the
25 overlapping manner just described, the surface
formed can be ground so that the ?nished arti
cle is perfectly symmetrical and can be-used in
' de?nitely without danger ofchipping or ?aking.
'30
It is a well known fact that metal, such as steel
for example, when it is deposited by the so-called
spray method is not only porous ‘but is increased
in hardness over the original ~metal. Also in
view of its more or less porous qualities it has a
much higher co-e?icient of friction and gripping
35 action than the. original metal. With this in
mind, my invention also contemplatesas an ar
ticle of manufacture, a brake drum, the wearing
surface of vwhich has a coating of the type just
described:
4
g
It is one object of this invention to produce a
method for applying a coating, of the type re
ferred to above, to the interior of a brake drum
or the like. This method consists in a general
way of directing a metal spray against the wear
45 ing surface of the brake drum while rotating the
brake drum and at the same time effecting rela
40
_ tive movement, in a direction parallel to the axis
of rotation of the drum, between the drum and
the
50
spray.
'
>
t
_
The means for producing the metal spray may
be any conventional type of so-called spray gun
whereby a metal wire or rod is melted by means
of an oxyacetylene flame or the like and the
molten metal as it forms is torn from the rod,
55 disseminated, and deposited on the surface being
means and is associated with a table clutch operated by a main drive shaft for the purpose of '20
effecting intermittent rotation of the table at
predetermined intervals. An upright guide mem
ber ‘mounted upon a suitable support is situated
adjacent the table and this-guide member car'
ries a traveling arm which has a projecting end
situated above the table for‘ supporting, in ad
justable relation with respect to the table, one
or more spray guns. The table is provided with
a plurality of work supporting members which, _
in the example given, will carry mandrels sup 30
porting the brake drums, and latch means are
provided for engaging, suitably positioned stops
on the table to lock and hold the same against
rotation inwa position where‘the drums are ex
posed to the action of the spray. - ,
35
Means are provided for rotating vthe drums
from the main drive shaft at such times as the
table is held stationary, and means in the form
of an upright feed screw, associated with a trav
eling member, is provided for the purpose of 40
moving the supporting arm and the spray gun
downwardly toward the drums and upwardly
‘away from the drums to apply the overlapping
layers of matted metal to the interior surface
of the rotating drums. The down and up move’. 45
ment of the traveling member on the feed screw,
‘which is driven from the main drive shaft, is
effected by means of a clutch mechanism on the
main drive shaft and a trip mechanism actuated
by the traveling member.
It is a further object of this invention ‘to pro-v I
vide'a machine of the class described with a trip
mechanism which is actuated to reverse the ro
tation of the feed screw when the arm reaches
2,110,755
and is shown with the table member having been
rotated through substantially 45° in order to
bring a drum supporting portion thereof in the
its lowermost position without disturbing in ‘any
way the table or the table clutch.
It is a still further object of this'inventio'n to
_ form the trip mechanism so that the feed screw
section plane;
_
-
Fig. 4 is an elevational view which may be con
sidered as having been taken in the direction of
‘clutch is thrown into neutral when the arm
reaches its uppermost position and which at the
the arrow 4 in Fig. l and which shows the rear
same time includes a mechanism for releasing
face of the machine contemplated by this inven
the table latch to permit the free rotation of the
'table and to engage the table clutch for e?ecting
tion;
'
"
Fig. 5 is a sectional elevation taken in a plane 10
10 such rotation while the 'feed screw clutch is held
represented by the line' 5--5 in Fig. 4 illustrating
in neutral.
Another feature of this invention resides in ' the construction of the feed screw and its as
the provision of a cam member associated with
sociated parts;
mechanism which will simultaneously disengage
the table clutch, move’ the table latch into a. posi
Fla 5;
Fig. 8 is a fragmentary plan view taken in a
Fla. 5:
’
'
'
plane represented by the line I 0-“! in Fig. 2 25
and illustrating the details in the construction
of the table latch mechanism;
Fig. 11 is a sectional view taken in a plane ‘rep
conduits so as to form a compact automatic oil
resented by the line ll-ll in Fig. 10;
Fig. 12 is a sectional view taken in a plane rep
pump for spraying lubricant upon the screw and
30 its associated mechanism during all periods at
which the machine is operated.
resented by the line l2—|2 in Fig. 10;
30
.
Figs. 13 to 16 inclusive are diagrammatic views
Another important feature in the machine
contemplated by this invention, is that the table
illustrating the various steps in the operation of
the latch mechanism, the trip ‘mechanism, the
35
table clutch, and the screw clutch;
and its associated parts are so constructed as to
balance the momentum of the driving mecha
nism. In other words, the main driving gear
which engages the driving shaft is always en
gaged. The table clutch merely locks the table
to a ring gear associated withthe main driv
'40 ing gear so that the momentum is either stored
in the rotating table or in the drums (which,
incidently, do not rotate during the movement of
the table) and is consequently never lost or
Fig. 17 is a sectional view of a brake drum il
lustrating the manner of applying the sprayed
metal; and
-
Fig. l8xis a fragmentary section illustrating the
40
character 'of the metal coating.
More particularly describing the invention as
herein illustrated, reference letter A indicates a
base plate or a base member which carries a ta
ble support generally indicated by reference let
.
ter B, which in turn rotatably suppor'ts a table 45
indicated at C. The table C is adapted to be in
termittently rotated through a clutch and gear
It is a further object of this invention to pro
duce a device of the class described which can be
adjusted for operation on drums or objects of
mechanism, which vwill hereinafter be more fully
‘
described, from a main drive shaft D.
A still further object of the invention is to pro-'
While '
the table is held in a stationary ‘position, by
means of a latch mechanism, generally indicated
at E, the main drive shaft D is eifective to ‘ro
tate a plurality of chucks F which carry spindles
vide the machine with manually adjustable
means for locking the screw clutch and the trip
mechanism which actuates the table clutch in a
,
G upon which brake drums H are‘ mounted.
The latch mechanism E is constructed and po
sitioned so that it holds the table in a position
where one or more of the drums H are .held in
The machine contemplated by this invention
55 is entirely automatic in its operation, the only
manual operations necessary being the replace
ment of the unsurfaced drums, which replace
alignment with the nozzle portions of metal spray
ment can be effected simultaneously with the sur
facing of another drum or set of drums.
guns I and I’ which are mounted upon gun sup
porting brackets J and J’. The brackets J and J’
The details in the construction of a preferred
embodiment of my invention, together with other
objects attending its production, will be best un
derstood from the following description of the
accompanying drawings which are chosen for'il
are mounted on the end portions of an inverted
T-head K which is in turn mounted for adjust
ment in a sleeve L formed on the end of a sup
porting arm M. The arm M has one end slid
ably mounted in a guide or way formed on the 85
65 lustrative purposes only, and in which— ' _
‘face of an upright housing 0 which contains
means for imparting up and down movement
‘to the arm M, such means being actuated by
the main drive shaft D. The shaft D is driven
Fig. 1 is a perspective-view illustrating a pre
} ferred embodiment of my invention and showing
the same’equipped with brake drums and with
two spray guns in operating position;'
Fig. 2 is a fragmentary plan view partly brok
70
through the medium of a chain drive or other 70.
suitable driving means P (see Fig. 4) from a mo
en away and showing the brake drums as having
been removed;
.
Fig. 10 is a fragmentary elevation taken in a
reciprocable shifter rod, the upper end of which
is received in a socket provided with valves and
60
20
Fig. 9 is a. fragmentary sectional elevation
taken in a plane represented by the line 9-9 in
.body in the trip mechanism, referred to above/a
neutral position.
.
plane represented by the line 8-8 in Fig. 5;
20 ly upon the table being locked into position the
screw becomes operative to initiate the downward
movement of-the spray gun relative to the next
set of rotating drums.
It is a further object of this invention to em
any desired width.
>
Fig. 'I'is a fragmentary plan section taken in
a plane represented by the line 1—1 in Fig. 5;
tion in which it will engage a stop on the table,
and reengage the screw clutch so-that immediate
.
—
plane represented by the broken line 6—6 in 15
15 gage a lever member associated with the trip
wasted.
‘
Fig. 6 is a fragmentary plan section taken in a
the stop means on the table and adapted to en- '
‘
- tor Q.
Fig. 3 is a fragmentary sectional elevation ,
which may be considered as having been taken
75 in a plane represented by the line 3-3 in Fig 2.
The metal spray guns I and 1' maybe of any
conventional type, su?ice it to say at this time
for the purpose of clearly describing the inven 75
2,110,755
The table C is shown as comprising a plurality
tion that each of these guns comprises a nozzle
member .II which is provided with a connectionv
12 for receiving a mixture of oxygen and acety
lene delivered thereto through a suitable header
indicated at l3 mounted on the housing 14 from
hoses ‘l5 and I5’. Another conduit l6 which is
of radially extending wing members 38 which _ .
are either formed or mounted on the table hub
section 34' and the entire unit is provided with a I
downwardly extending protecting ?ange 39.
The drum or work supporting chucks F, which
have been referred to above, are formed at their
upper ends with shoulders ‘40 which engage ball
‘bearings 4| mounted in passages 42 formed in
the ends of the wings 38. These passages 42, 10
connected through avalve in the housing (not
shown) to another hose I1 is provided for de
livering compressed air to- the nozzle.
10
'
Reference numeral l8 indicates a wire or rod
which is fed into the nozzle II by a suitable
in the form shown, comprise sleeves which are .
cast in the wing members and, project down
feed and straightening mechanism contained
within the housing l4, such wire or rod coming
' from a reel or other suitable source not shown.
As the wire I8 is fed into the nozzle H, it is
melted by the oxyacetylene ?ame and is dissem-.
inated and deposited by the compressed air on
the interior of the drum H which is being re
volved through the drum revolving mechanism
20 which will be described later.
_
wardly relative to the upper faces of such mem
bers. The lower ends of the sleeves are pro
vided with bearings indicated at 43. It will be 15
understood, of course, that the construction fol
lowed for each of the chucks is the same as that
shown in Fig. 3 where the lower end of the chuck
' member F is shown as being of reduced diameter
and is provided with a ,miter gear 44 keyed 20
The nozzle housing I4 is mounted upon a plate
l9 which is ‘adapted to be adjusted longitudinal
ly of the nozzle supporting bracket J by means
of a screw 20 and a hand wheel. When two guns
25 are being used in the manner shown, it is pref
erable to adjust one gun for use on “rear" drums, .
so
and the other for “front” drums. Since the
mountings for the front and rear drums are dif
ferent, this permits the coating of a complete set
of drums at one operation.
I '
The machine is constructed and operated so
that the table C is rotated into a position at
which two of the drums H are positioned below
the two nozzles where it is latched by the latch
35 mechanism E. The latching of the table is au
tomatically e?ective to initiate the downward
movement of the supporting arm M. When the
nozzles have reached a position at which they
are spraying the lower edge of the wearing sur
40 face of the drums, the machine having been pre
viously set for the proper drum width, the mech
anism which operates the arm is automatically
3 .
thereto.
1
r
'
This miter gear 44 engages a pinion 45 which is
mounted on the end of a chuck operating shaft
46 supported by bearings 41 which in “turn are
secured to the undersurface of the wing member 25
38. The inner end of the chuck operating shaft
46 is keyed to a pinion 48 which engages a miter
gear 49 mounted, through the medium of bolts 50,
upon a chuck driving sleeve 5l.- The upper end
of the chuck driving sleeve 5| engages a collar 52 30
which forms a top bearing against ,the table
rotating sleeve, 29. The lower end of the chuck
operating sleeve is mounted upon another bearing
collar 53, the inner surface of which engages the
table operating sleeve 29 and the lower edge of 35
which rests upon a ?ange 54 formed on the lower
edge of the table operating sleeve.
Reference numeral 56 indicates a main drive
gear, and reference numeral 51 indicates a. driv
ing clutch member, both of which are rigidly se 40
cured through the medium of pins or bolts 58 to
a ?ange 59 formed on the chuck operating sleeve
5|. This main drive 'gear 56 is engaged by a
5 ‘ reversed without disturbing the table and the arm
is raised to its upper position at which the latch pinion 60 keyed to the inner end of themain drive
45 is automatically vreleased to permit the rotation . shaft D which is shown as being supported at its 45
of the table and means, "to be described later, are inner end by a bearing standard 6| mounted on
.
brought into play for turning the table into the the base member A. ‘
Reference numeral 62 indicates a clutch plate
next position at. which another set of drums is
in alignment with the nozzles and the operation
50 is repeated.
Referring now to ‘the details in the construetion of the table and its associated parts which
are bestillustrated in Figs. 2 and 3, reference
numeral 23 indicates an uprightspindle which
55 is secured at its lower end in a collar 24 mounted
in an opening 25 formed in the base member A
and secured in such opening by means of screws
26. The spindle 23 has a shoulder 21 formed on
an intermediate portion thereof, such shoulder
60 supporting a combination thrust and radial bear
ing 28 which, in turn. supports a sleeve member
29. The sleeve member 29 is supported-near its
upper end by radial bearings 30 engaging the
spindle 23 and‘above the bearing 39 the sleeve
65 is formed with a hub portion 31 through which
having a clutch face 63 adapted to engage a cor
responding face 64 formed on the lower end of the 50
driving clutch member 51: This clutch plate 62,
which is provided with rigid pins 65 extending
upwardly into pin recesses 66 formed in the bot
tom of the table operating sleeve 29, rests upon
a bearing 68 mounted in a clutch engaging col 55
lar 69 which is adjustably mounted on a nut 69’
in threaded engagement with threads 10 formed
on the main spindle 23.
This collar 69 is adapted -
to be rotated through the action of the nut 69’
on the threads 10 for moving the clutch plate 62
to"
into engagement with the driving clutch member _
51 by means of a clutch‘ actuated rod 1| which has
a stirrup 12 mounted on its end, which in turn
has a pin connection to a lever arm 13 formed on
the collar 69.
'
'
65
From the construction described so far, it will
a threaded pin 32 extends. The outer surface of ~
be observed that when the clutch is disengaged,
the hub portion 3| terminates at its lower end
in a shoulder 33 which supports a downwardly
70 extending hub collar 34 formed in the table.
This hub collar is keyed to the hub portion 3| of
in other words, when the collar 69 has been
rotated downwardly in ‘ts threads to permit a
clearance between the ch tch plate and the clutch 70
driving member, the table in the meantime hav-‘
the sleeve as indicated at 35 and is held in proper
ing been locked against rotation, the rotation of
alignment therewith by means of a washer 36 » the main drive shaft D and the consequent rota
which is engaged by a nut 31 mounted on the tion of the gear 49 im parts rotation to the chuck v
‘
driving shafts 46 and their associated parts, in
75 upper threaded end of the pin 32.
2,110,755
cluding the chucks F, the spindles G and the
brake drums H supported by the chucks.
When the table is released and the clutch actu
ating rod ‘II is pulled to the right to rotate the
clutch collar 88 in its threads and move the
clutch plate 82 into engagement with the driving
clutch element 51, the shaft D continuing to
rotate drives the clutch plate 82 and consequently
through the pins 65 rotates the sleeve 28 to which
10 the table is keyed. At the same time the chuck
operating shafts cease to_ rotate and the table is
the cam is situated with respect to the pin ‘as
shown in full lines in Figs. 10, "11, and 12.
In the operation of a trip mechanism of which
the cam and sleeve are a part and which will
be morev completely described with relation to
the mechanism for- operating the'traveiing arm
M, the sleeve and the cam are rotated upwardly
to'the broken line position shown in Fig. 12 where
the ?at portion of the-cam nose rests upon or is
situated above the pin I82. From the broken line 10
position it will be seen that the next counter
moved to its next position at which, as pointed
clockwise rotation of.the cam and sleeve will
out hereinabove, it engages a latch to lock it
be effective to press the latch member 8| down
wardly against the action of the compression
against further rotation and automatically dis
15 engage the clutch which permits the rotation of
the shaft D to again be imparted to the chuck
operating shafts 38. .
~
.
In this form of ‘my invention the clutch actu
ating rod ‘II is pivotally connected, as indicated
20 at 15, to a clutch actuating lever 18 which is‘
rigidly mounted upon a clutch actuating shaft 11,
the shaft 11 being supported in bearings 18 and
‘I8’ mounted on the base member A.
The lever
‘I8 is continually biased toward a clutch. engaging
25 position by means of a tension spring 19 which,
as shown in Fig. 5, is secured to a rigid support
88 on the base member;
spring 9| so that itsupper end clears the lower 15'
surface of the notch _82' in the stop 82, thereby
permitting theclutch actuating shaft TI to be
rotated in the counterclockwise direction by the
action‘ of the ‘tension spring 18 which will,
through the action of the clutch actuating rod 20
'II, engage‘ the table clutch.
-
.
.
The rotation of the clutch actuating shaft 'I‘l
swings the latch member 8| into the dotted line
position shown in Fig. 12 at which position the
latch member 8| of itself will not effectively en
g'age the stop member. ' It is, therefore, necessary
to provide some means for rotating the latch
The latch mechanism E includes, what I may
term, a latch 'member or a lever member 8| (see
mechanism and the clutch actuating shaft back
35 bracket having projecting cars 88 forming a recess
portion of va crank or lever member "5 which,
in view of the fact that it is a. part of the trip
mechanism referred to above, will hereinafter
to the full line position shown where the latch. '
30 Figs. 10 and 12) the upper end portion of which member 8| will engage the next stop on the table.
For the purpose of effecting this operation, I
engages a stop 82 mounted on the underside ofa
' table wing.’ More speci?cally, .the latch member provide an elongated ?nger cam I88 on the‘
or the lever member 8| comprises a supporting _ undersurface of the table which’ is situated so as
bracket 83 which is mounted on the shaft 11, such , to engage a ball I88 mounted on the upper end
in its upper end-which receives the latch member
8| held therein by means of a pin 85. A second
pair _of projecting cars 81 form another recess on
the bracket member through which the latch
40 member 8| extends and in which such member is
heldv by means of a bar or ?nger 88. ' The lower
end of the latch member 8| is provided with a
downwardly extending pin 89 which projects
through a notch 98 formed in the lower end of the
bracket member and a compression spring 8| en
circles the’ pin 88 and is interposed between a
shoulder 92 ‘on the latch member and the foot por
tion 93 ‘which contains the notch in the bracket.
A tension spring 84 is interposed between the low
be referred to as a trip lever. This lever I85 is
secured to the sleeve I88 through the medium
of a screw or bolt I88 extending through a. collar
|8‘I which is locked to the sleeve by means of the
set screw I88.
»
"
When the cam I83, by virtue of the rotation
of the table, engages the ball I84 it swings the
lever I85 together with the sleeve in a ‘counter 45
clockwise direction so that a forward face I85’
on' the lever or crank I85 engages the end of
a screw III! which is adjustably mounted in an
.‘extension‘of the bar 88. This movement is in
dicated in brokenlines shown in Fig.‘ 11. The 50
continued movement of the finger cam I88, by .
the lower end of the bracket.
When the latch mechanism is in the position virtue of the engagement between the trip lever
I85 and the screw II8,‘swings» the bracket and ‘
"shown in full lines in Fig. 12, the clutch actu
~ating shaft ‘I1 has been rotated to ,_a position at its associated latch -member 8| into the full line
position shown in Fig. 12 thereby disengaging the
55 which the clutch is disengaged and the table‘ is
heldv against .further rotation by virtue of the. clutch and positioning the latch member 8| for
engagement of the stop ‘member 82 with the engagement with the. stop 82 on the table. In
notch 85 in the latch member 8|. It will be seen, this' connection it will be seen that the disen
therefore, that it is necessary ~to provide‘ some gagement of the table clutch can be ‘regulated
by adjusting the screw II8.
means for moving the latch member 8| down
Referring now to Figs._ 5 to 9 inclusive for a
wardly against the action of the compression
spring 8| in order to permit the tension spring more complete description of the upright hous
I ‘I9 acting upon the lever ‘I6 to rotate the clutch ing 0, the means for actuating the traveling
engaging collar for reengaging the table clutch to _ _arm, and the remainder of the trip mechanism,
it will be observed that the housing‘O is pro 65
'
~
,
65 rotate the table.
50 er end of the pin 88, and a projection 95 formed on‘
V For the purpose of effecting this last mentioned
vided with a base ?ange I28.whereby it is se
operation, I mount upon the shaft 11 in rotatable cured to the base member A through the medium
relation thereto, a sleeve I88 which has one end of screws I2I. "The bottom of the housing and
the ?ange connection are ‘formed so as to pro
in bearing engagement with the bracket mem
vide an oil reservoir I22 in the bottom of the
70 ber 83 and _has mounted upon that end portion ' upright
housing, the purpose of which will be
_ ‘ thereof a pawl or cam member I8I.' This cam
__memb_er is arranged so as to engage a pin I82 more fully described later in the specification.
It will be" observed from Fig. 5 that the ‘main
which is mounted on the inside face of the latch
member 8|. When the table I has just been ' drive shaft‘D which has av bearing 5|’ on .the base _
'75
stopped from rotation and the clutch disengaged,
member adiacent the upright housing,‘ extends
5
2,110,755
through bearings I24 and I24’ provided 'in- the formed so that it extends at all times over ‘the bottom'portion of the upright housing. The out
opening I5I to prevent lubricant being sprayed
wardly extending end of the main drive shaft is through the opening onto the machine. provided with a sprocket I25 which forms a part
-of the driving means indicated at P, such sprocket
and driving means being encased in a protecting
housing I26.‘v
‘
From the construction so far described, it will
be seen that as the clutch collar is moved from 5
a neutral positionvinto engagement with the '
clutch faces on either of the pinions I28 or I29
Within the housing 0, the‘ shaft D is provided
the feed screw will, through the action of the
with a pair of spaced miter pinions I28 and I 29 gear I35, be rotated in opposite directions to
10 'rotatably mounted on the shaft. The opposite . move the traveling member I53 and its associated 10
inner faces I28’ and I29’ of the pinions are parts including the arm M up or down‘ as the case
formed with clutch jaws adapted to be engaged may be. In this connection it is again pointed
by similar clutch jaws I30 and IN formed on out that the main shaft D continues to rotate in
the ends of a .clutch'collar I32 which is splined - the same direction, the operation of the feed
screw being controlled solely by the action of the 15
15 to that portion of the shaft D which lies betwe
the two pinions I28 and, I29.
The clutch collar I32 is provided .with an an
feed screw clutch.
nular groove I34 which receives ‘a block I34’
slidably mounted between compression springs
Since the intermittent rotation of the table in‘
the manner described above,and the automatic
reversal of the movement of the arm is dependent
' ‘
20 I35 and upon a curved guide bar I35’ which in upon the extent of movement in the arm or the 20
turn is mounted in a fork I36 formed on the ' position of the nozzles with respect to the drums,
upper end of a lever member I36’ which is keyed 'it is important that the trip mechanism, which
to a shaft I 42'. The block I34’ and its associated
mechanism is effective, through opposite vrota
25 tions of the‘ shaft I42, to move the clutch collar
into engagement with the opposite clutch faces
on the gears ‘I28 and‘ I 29 and also, under certain
operations of the trip mechanism to throw the
clutch collar into a neutral position.
30
_
The pinions I28 and‘ I29 are in engagement
with .a gear I31 which is keyed to the lower end
portion of a feed screw I38. The feed screw
I38 has its upper end portion 'rotatably mounted
in "a bearing I38 which is formed in a bearing
has been partially described hereinabove, include
as an element, means which are actuated by the
traveling member or some of its associated parts. 25
In this form of my invention, I provide the travel
ing member or feed nut I53 with an arm or ex
tension I10, the end of which is provided with a
collar I1I slidably engaging a' bar or rod "2
which I will hereinafter refer to as a trip bar. 30
This trip bar has ‘its upper end slidably fitted
into a cylinder I13 of'a socket member I14 which
is secured in an opening in the top of the hous
ing 0 by means of a ?ange connection I15. The
35 bushing I38a mounted in the top of the housing,
bottom of the trip barlll2 is secured, through 35
and the upwardly extending end of the feed screw
is provided with a hand wheel I39 for manually
operating the same. The lower "end portion 'of
the feed screw is supported in a combination
40 radial and thrust hearing I“ which is contained
within a bearing housing MI’. The bearing
which projects through an opening I44 formed
in the housing and which is secured, through
the medium of a stirrup and pin connection I16,
to a lever member I11 which is rigidly-secured
to the shaft'l42 (see Fig.9).
Mounted on the trip bar I12 at the bottom of
the travel of the feed nut I53, is a stop member 40"
I80 which supports a compression spring I8I.
The compression spring I8I is adapted to be en~
gaged by the collar HI and through such engage
ment it is compressed against the stop I80 to
medium of screws I45, to a bearing supporting
plate I46. This last mentioned plate is mounted
a point at which the lever I11 ismoved down 45
wardly rotating the shaft I42 in a clockwise di
housing I“ ' is secured to a bracket member I43v
’ upon the face of the housing through-the me
dium of screws I41 (see Figs. 1 and'l).
rection, and since, under these circumstances the r '
feed nut is 'moving downwardly, the clutch jaw
For the purpose of properly aligning the lower
I30 on the clutch collar I32 is engaged with the '
corresponding clutch jaw I28’ on the gear I28 50
between the plate I46 and the engaged surface which rotates the shaft for downward movement
of the housing.
of the feed nut, therefore, the clockwise rotation
The front face of the housing 0 is provided‘ of the shaft I42, through the action of the fork
withv an elongated opening ‘or way I5I wherein lever I36, disengages the clutch, and the expan
sion of the compression spring I'8I throws the 55
55 a feed nut yoke member I52, mounted -,on the
50 bearing I provide shims I49 which are interposed
back of the arm M as indicated at I53, is adapted
to move. The feed nut yoke member I52 extends
partially around a feed nut or traveling member
clutch collar the full width of the gap into en- ‘
gagement with the pinion I29 which reverses the .
rotation of the feed screw. .
I53’ which is in threaded engagement with the
For the purpose of limiting the upward move
60 feed screw,. and is provided with blocks I54 piv
ment of the feed nut, I provide the trip bar I12 60
otally mounted thereon, such blocks being re
with another stop member I85, such stop having '
ceived in notches I55 formed in the feed nut yoke . a projecting handle I06 which extends through
I52.
‘
On opposite sides of the opening I5I in the
65 housing 0, I provide a pair of__ undercut plates
I51 whichware secured thereto by' means of
screws I58. The undercut portions of these
' plates I51 receive inwardly extending projections
I59 on gib plates I60, such gib plates being
70 mounted by means of bolts I6I upon the edges of
a_ slot I81 formed in a cover plate I88 on the
back of the housing 0. This handle member is
provided with a latch mechanism‘ generally in 65
dicated at I89, the keeper of which is adapted to
be received in notches I90 formed on the trip’
bar. It is to be understood that this stop mem
her. may be adjusted to control the upward limit ‘
of travel of the arm M and its associated parts. 70
‘Reference numeral I92 indicates a compres
a supporting plate I62 which, in this form of my
invention, is cast to the rear end. portion of the~ . sion spring which is situated on top of the collar
arm'M.
.
.
-'
,. member "I and which is adapted to'be com
The top of the plate section I62 is shown as pressed between the stop I85 and the collar I1I '
being provided with a shield plate I64 which is,
when thecollar reaches its upper limit of travel.
2, 1 10,755
6
2 I 0 quickly pulls the rod 200 forward thereby
giving a ?nal upward thrust to the trip bar I12.
During this?nal thrust the trip bar moves much
more rapidlythan it does during the ?rst part of
than the spring I8I so that the action of this - its motion when the clutch is disengaged and the
spring is merely su?icient to disengage the clutch . outlet valve 220 was not large enough to take care
collar but will not throw it across the gap and g ‘ of this rapid upward movement.
For‘the purpose of quickly. releasing the re
As vthis spring is compressed, the trip bar ‘I12
is gradually moved upward to move the clutch
collar I32 into its neutral position. It will be
observed that the spring I92 is lighter or shorter
‘ into engagement with the other gear.
mainder. of the oil contained in the cylinder I13,
As was pointed out hereinabove, the trip-“bar:
has, in addition to the functions just' named. “ I provide an auxiliary outlet 221 in the top of the 10
10 the function of releasing the table latch so as'to ' socket member I14. This auxiliary outlet is not
permit the engagement of the table clutch when mally closed by a spring pressed check valve 228 .
the arrnM reaches its uppermost position. This which‘ may be adiusted'to give the desired hy
draulic, cushioning effect to the trip‘rod I12 by
function is accomplished through the medium of
a latch actuating bar 200 which is slidably
posite sides of. the housing 0.
- _
1
The bar_200 is provided with a pin 203 which
and latch mechanism.
7 extends into the fork 204 in the upper end of v
holding the bar‘; in the three alternative‘ypositions
which correspond to the up, neutral, "and down
25
positions ofjthe'jclutch collar. I32, I providethe
bar with three .riotche's-indicated. generally by ref
erence numeral)“ whichvareladapted to selectively receive" a.‘_s'pring pressed ball 208 mounted
in the bearing member 20I.
30
The bar 200 is con-
'
'
.
with a neutral locking handle 230 which projects >
through an opening 23I in a bottom cover plate
232 on the back of the housing 0. Below the 25
extending portion of this lever, I provide a cam
plate 233‘which is pivotally attached to-the cover
plate as indicated at 234, such cam plate being
provided with a handle 235. When the cam
30'
. plate 233 is swung into the full line position
nected, through a yieldable spring connection
209, with a rod 2I0 which inturn is secured at its
end and through a, yoke 2“ to a crank 2I3 rig
idly mounted upon the sleeve ,I00 (see Fig.‘ 3).
In addition to forming a part of the trip mech
35_ anism, the trip bar I12 comprises part of a novel
pump whereby lubricant is continuously supplied
to the feed screw and its associated parts dur
ing the operation of the machine. ’ As was point
ed out above, the upper end of the trip bar I12 is
40 _ ?tted in sliding engagement into the cylinder
-
For the purpose of optionally locking the clutch 20
I32 in neutral at the ‘end ofthe downward move
ment of the feed nut, I provide the trip bar I12
a lever 205 rigidly mounted upon the shaft I42.
20' Various irotative movements of the shaft I42 are,
therefore, eiiective, to reciprocate. the bar 200,
and for the purpose of stopping and releasably
Since the 15
means of an adjusting screw .228.
movement is imparted to the trip rod directly
from the table, it will be seen that this structure
provides a hydraulic cushion for the table stop
15 mounted in bearings 20I and 202 formed in op
I13
formed in the socket member. This cylinder is
provided at its upper end with a ?uid inlet con
nection 2I5 and a ?uid outlet connection 2I8,
the inlet connection 2I5 beingconnected through
45 a check valve 2 I1 with an inlet conduit 2I8 which
shown in Fig. 4, it will be engaged by the‘ handle _ ‘
member 230 and will'thereby hold the trip bar
I12 against further downward movement be
yond the position at~which the feed screw clutch
I32 is in neutral.
,
35
Referring to Figs. 13 to 16 inclusive, the op‘
eration of the trip mechanism, the feed screw
clutch, the table latch, and the table clutch is as
follows: Referring to Fig. 13 the table member
with the ?nger cam I03 has just been rotated to 40
a position at which the ?nger cam has passed
the ball III‘, the table having been brought into ’
a position at which the stop 82 is engaged with
the latch 85, the table clutch 62 having been dis
engaged and the' feed screw‘ clutch I32 having
been thrown into engagement with the “down"
gear I28, thus initiating the rotation of the feed
opens at its lower end into the oil reservoir I22.
The ?uid outlet connection 2I6 is connected screw in a direction which imparts downward
through a check valve 220 with an outlet conduit movement to the feed nut I53. It will be ob 50
22I ‘which opens into a space provided in the top served that in this position the curved nose of
50 feed screw bearing I38. As the trip rod I12 is the cam IOI rests beneath the pin I02.
As the feed nut I53 travels downwardly, it is.
moved downwardly through the action of the
collar I1I on the stop I80, oil is drawn into the brought into engagement with the stop I80 as
cylinder I13 ‘through the check valve 2" from shown in broken lines in Fig.‘ 13, compressing
the oil reservoir. When the collar member "I the spring I8 I, thus gradually releasing the clutch 55
55 reaches the upper limit of thestroke and engages ' collar from the gear I28 against the action of
the stop member I85, moving the trip rod I12 the spring pressed ball 208 in the last notch with
upwardly, the oil thusv received is forced out which it is in' engagement. When the clutch is
through the check valve 220 and onto the feed released in this manner the latch compression
screw I38, across which it is returned to the oil spring I8I is eifective to throw the clutch-collar
60
reservoir.
.
'
-
‘
For the purpose of protecting the bottom bear- '
ing IlI against grit; or cuttings which may be
vcarried by the oil, I provide a felt ring 225, or a
plurality of such rings, in the bearing hous
65
ing Ill’.
,
‘ ~_
.
‘I
clear through the neutral position and into'en
gagement with the “up” gear I29 to the position
as shown inFig. 14.
The movement of the sectional bar 200-210
which accompanies the shift just described, ro
65
tates the sleeve I00 so that the nose of the cam
IOI passes the pin I02 and assumes a position
As was pointed out~above, the upward move
ment of the travelingmember or feed nut,>grad~ “at whichithe ?at portion .of the cam is situated
ually moves the trip rod I12 upwardly until the above or rests upon the pin I02. The feed nut
I53 is now moving in an upward direction as in
clutch is disengaged. This movement is also ef
70 fective to release the table and engage the table dicated in Fig.‘ 14. When the nut reaches its
clutch. As the table rotates around into itsnext upper limit of ‘travel, as indicated at Fig; 15, the '
top spring I92 is compressed against the stop
position, the ?nger camv 103, through its engage
ment with the knob I04, rotates the sleeveand I85, the- continued upward movement of the
to.
75
through the action of the crank H3 and the $00.
REG nut being eifective to move theyupright
2,110,755
shifter rod I12 upwardly, gradually withdrawing
the clutch collar 132 from its engagement with
the “up” gear I29 until it. occupies, a neutral
position where the ball 208 is engaged‘ in the
central notch 201. This movement of~the sec
tionalrod 200-2“) rotates the flat-face .of the
cam I00 downwardly against the pin I02 thus
7
eludes within its scope whatever changes fairly
come within the spirit of the appended claims.‘
I claim as my invention:
>
1. A machine for applying a metal coating to
brake drums and the like embodying: a table;
means for rotatably supporting said table; means
on said table for supporting a plurality of drums;
moving the latch 85 into a position at .which it
means including a main gear for rotating said
clears the notch in the stop 82. This permits the
table clutch actuating shaft ‘H to be rotated by
the action of the tension spring 19 in a clutch
engaging direction‘ which engages the table
clutch, thereby initiating the rotation of the table.
Fig. 15 shows the clutch as having been en
15 gaged and illustrates the next cam and stop'on
the table as being in a position just prior to the
drum supporting means, said main gear being
engagement of the cam I03 with the ball H14
on the sleeve supported lever M5. The con
coaxial with the table support; a metal spray 1O
gun; means for supporting said spray gun above
said table; means for effecting relative up and
down movement between a drum engaged by said
drum supporting means and said spray gun; latch
means for normally holding said table in a ?xed 15
position relative to said spray gun; means in
cluding a clutch, which is coaxial with the table
support and is adapted to be driven by said main
' tinued movement of the table rotates the lever . gear, for rotating said table; and automatic
20 rearwardly into the position shown in Fig. 16 at ~ means for'releasing said table and engaging said 20
which the latch member 85 is swung up into a
position at which it will be engaged by the stop
member 82. This movement also disengages the
clutch and swings the segmental bar 200—2l0
25 forwardly into the position in Fig. 13,‘ also en
gaging the feed screw clutch with the “down”
' gear I28 and giving a ?nal upward thrust to the
trip bar I12.
Fig. 17 illustrates more clearly the manner in
table rotating clutch when a predetermined posi
tion of saidspray gun relative to said drum has
been reached.
2. A machine for applying a metal coating to
brake drums and the like embodying: a table; 25
means for rotatably supporting said table; means
on said table for supporting a plurality of drums;
means, including a main gear coaxial with said
table support, for, rotating said drum supporting
30 which the metal is sprayed onto the interior of
the brake drum. As was pointed out above, the
means; a metal spray gun; means for supporting 30
said spray gun above said table; means for ef
'T-head K is adjusted so that the spray will just
strike the rim of the drum, and the, downward
movement imparted to the nozzles from the feed
35 screw- is so related to-the rotation of the drum
fecting relative up and down movement between
a drum engaged by said drum supporting means
that the nozzles are moved, say‘, one-third the
width of the area covered by the spray for each
rotation of the drum.
This results in an over
lapping series of layers which forms the mat of
40 hard metal on the inner surface of the drum,
such layers being indicated at Ll, L2, and L3 in
i Fig. 18.
As the nozzles traverse their upward
course, another series of layers are laid on the
wearing surface so that the surface (in the event
45 the relative movement between the nozzle and
the drum is as pointed out above) will be made
'up of six thicknesses of metaL- It will be under
stood of course that each drum may be given as
many applications as desired to obtain the re-,
quired thickness, but the operation of the ma
chine is such that the deposited metal is per
mitted to set after each depositing operation,
but not‘ to harden to an extent preventing secure
when a predetermined position of said spray gun
relative to said drum has been reached; and
means on said table for engaging said latch to
lock said table against further rotation when it
has been rotated to a predetermined position 45
relative to said spray gun.
3. A machine for applying a metal coating to
brake drums and the like embodying: a table;
means for rotatably supporting said table; means
on said table for supporting a plurality of, drums; 50
means including a main gear for rotating said ,
drum supporting means; a metal spray gun;
means for supporting said spray gun above said
bonding together, of the successive spray~de
table; means for effecting relative up and down
posited layers.
movement between a drum engaged by said drumv -
‘
It will be seen from the foregoing description
that when the table has stopped in a position
for spraying one set of drums, the otheLset of
drums is free to be removed‘and replaced with an
60 untreated or unlined set. The operation of the
machine is entirely automatic and the only
manual operations are those just mentioned in
connection with the drums.
It is again emphasized that the method and
65
and said spray gun; latch means for normally
holding said table in a ?xed position relative to
said spray gun; means including a clutch, which
is coaxial with the table supporting means and
is adapted to be driven by said main gear, for
rotating said table; automatic means for releasing
said table and engaging said table rotating clutch 40
supporting means and said spray gun; latch
means for normally holding said table in a ?xed
position relative to said spray, gun; means in- '
cluding a clutch element formed integrally with said main gear for rotating said table; automatic 60
means for releasing said table and engaging said
table rotating clutch when a predetermined po
sition of ‘said spray gun relative to said drum
has been reached; and means operableby said
apparatus contemplated by this invention is not
automatic means for disengaging said means 65
con?ned to use in'repairing worn or ‘scored drums,
but that it may be used in placing upon a‘ new
which eiTect the up and down movement be
tween ‘said spray gun and said drum.
4. A machine for applying metal coating to
brake drums and the like embodying: a table;
means for rotatably supporting said table; means 70
on said table for supporting a plurality of drums;
means including a main gear for rotating said
drum, a wearingsurface having greater hardness
and durability and a‘higher coefficient of friction
than can be obtained in an original vforging or
casting.
‘It is to be understood that, while I have herein
described and illustrated one preferred form of
my invention, the invention is not limited to the
precise ' construction described herein, but in~
drum supporting means; a metal'spray gun;
means forsupporting said spray gun above said
table; means for effecting relative up and down 75
2,110,750
8
movement between a drum engaged by. said drum
supporting means and said spray gun; latch
means for normally holding said table in a fixed
position relative’to said spray gun; means in
cluding a clutch element formed integrally with
direction of said spray gun support moving
means; automatic means operable when said
spray gun support ‘has reached‘a predetermined
upward position to disengage said spray gun
support moving means; and means operable by
said mainlgear for rotating said table; automatic ' said last mentioned automatic means for releas
ing said table~holding latch and engaging said
‘means for releasing said table ‘latch and engag
'
~
.
ing said table rotating clutch when a prede- “ table rotating clutch.
8. A machine for applying a metal coating to
termined position of said spray gun relative to
said drum has been reached; means operable by brake drums and the like embodying: a table;
said automatic means for disengaging said means means for rotatably supporting said table; means
including a main gear and a clutch for rotating
a which e?ect the up and down movement between
said table, said main gear and-clutch being co
said spray gun and said drum, means on said
table for engaging said latch to lock said table axial with respect to the table-supporting means;
15 against further rotation when it has been rotated
toa predetermined position relative to said spray
gun; and means operable by said latch for re
engaging the means which e?ect said up and
down movement between the spray gun and the
20
drum“
,
-
'
.
>
-.
5. A machine for applying a metal coating to
brake drums and the like embodying: a table;
means for rotatably supporting said table; means
including a main gear and a clutch for rotating
25 said table, said main gear and clutch being co
axial with respect to the table-supporting means;
means for supporting a plurality of drums on said
table; means actuated by said main gear when
said table is stationary for rotating said drums;
30 a metal spray gun; means for supporting said
' spray gun above said table; means for moving
said spray gun support downwardly toward said
table; 'and automatic means operable when said
spray gun support has reached a predetermined
35. downward position to reverse the direction of
movement of said spray gun support.
>
7.6. A machine for applying a metal coating to
brake drums and the like embodying: a table;
means for rotatably supporting said table; means’
40 including a main gear and a clutch for rotating
said table, said main gear and clutch being co
axial with respect to the table-supporting means;
means for supporting a plurality of drums on
means Ior supporting a plurality of- drums on 15
said table; means engaging said main gear for
rotating said drums when said clutch is disen
gaged; a metal ‘spray gun; means for supporting
said spray gun above said table; latch means for .
locking said table with one of said drums in a 20
predetermined position relative to said spray gun;
means for moving said spray gun support down- *
wardly toward said table; automatic means oper
able when said spray gun support has reached a
predetermined position to reverse vthe direction of
said spray gun support moving means; auto
matic means operable when said spray gun sup
port has reached a predetermined upward posi
tion to disengage said spray gun support mov
ing means; means operable by said last men 30
tioned automatic means for releasing said table
holding latch and engaging said table rotating
clutch; and ‘stop means on said table‘ for en
gaging said latch to hold said table against fur
ther rotation when it reaches a predetermined
position relative to'said spray gun.
9. A machine for applying a metal coating to
' said table; means actuated by said main gear
brake ‘drums and the like embodying: a table;
means for rotatably supporting said table; means
including a main gear and a clutch for rotating 40
said table, said main gear and clutch being co
axial with respect to the table-supporting means;
means for supporting a plurality of drums on
said table; means engaging said main gear for
.475 when said table is stationary vfor rotating said
rotating said drum; a metal spray gun; means 45
drums; a metal spray gun; means for supporting
said spray gun above said table; latch means
for locking said table with one of said drums in
a predetermined position relative to said spray
50 gun; ‘means for moving said spray gun support
for supporting said spray gun above said table;
latch means for locking said table with one of
said drums in a predetermined position relative
to said spray gun; means for moving said spray
gun support downwardly toward said table;
downwardly toward said table; automatic means ‘ automatic means operable when said spray gun
operable when said spray gun support has support has reached a predetermined position
reached a predetermined'position to reverse the to reverse‘ the direction of said spray gun sup
direction ‘of said spray gun support moving port‘moving means; and automatic means oper
55 means; and automatic means operable when said - able when said spray gun support has reached a 55
spray gun support has reached a predetermined predetermined upward position to disengage said
upward position to disengage said spray gun sup - spray gun" support >moving means; means oper
able by said last mentioned automatic means
port moving means.‘v
~
_
~
'
'L- A machine for applying a metal coating to .for releasing said table holding latch and en
gaging said table rotating clutch; stop clutch on 60
60 brake-drums and the like embodying: a table;
means‘for rotatably'supporting said table; means said table for engaging said latch to .hold said
including a main gear and a clutch for rotating table against further rotation when it reaches av
predetermined position. relative to said spray
said table, said main gear and clutch being co
axial; with respect to the table-supporting gun; and means operable by said latch'when en
gaged by said stop means for disengaging said 65
65 means; means .for supporting a plurality ‘of table rotating means and reengaging said down
drums on said table; means actuated by said main
gear when said clutch is disengaged for rotating wardly operating spray gun support moving
said drums; a metal spray gun; means for sup
' porting said spray gun above said table; latch
for locking said table with one of said
v70 means
drums in a predetermined position. relative to
said spray gun; means for moving said spray gun
support downwardly toward said table; automatic
means operable when said spray gun support has
7%
reached a predetermined position to'reverse the
means.
'
'
_
>
10. A machine for applying a metal coating to
brake drums and the like embodying: a table; 70
means for rotatably supporting said table; means
including a main gear and a clutch for rotating
said table, said main gear and clutch being co-‘ '
axial with respect to the table-supporting means;
means for supporting a plurality of drums on 75
.9
2,110,755
14. A machine for applying a metal coating‘
said table; means engaging said main gear for
to brake drums and the like embodying; a base
rotating said drums; a metal spray gun; adjust
member; a table; means on said base member .
: able means for supporting said'spray gun above
said table; meansfor moving said spray gun sup
port downwardly toward said table; and auto
for rotatably supporting said table; means for
rotatably supporting a plurality of brake drums~
' on said table; a main drive shaft; means includ
matic means operable when said spray gun sup
port'has reached a predetermined downward po-'
sition to reverse the direction of movement of
said spray gun support.
'
_
»
11. A machine for applyinga metal coating to
10
brake drums and the like ‘embodying: a table;
means for rotatably supporting said table; means
including a main gear and a clutch for rotating
' said_ table; means for supporting a plurality of
15 drums on said table; means engaging said main
gear for rotating said drums when said clutch is
disengaged; a metal spray gun; adjustable means
for supporting said spray gun above said table;
ing a main gear coaxial with said table-support
ing'means for rotating said drum supports from
said main drive shaft; means including a table
clutch coaxial with said table-supporting means 10
for rotating said table from said main drive
- shaft; an upright housing mounted on said base
member in offset relation with said table; guide
means on said housing; a spray gun supporting
arm slidably mounted on said guide means; a 15
metal spray gun mounted on said arm above said
table; an upright feed screw in said housing;
means including a clutch member on said main
latch means for locking said table with one of j drive shaft for driving said feed screw in oppo— .
site directions; means including a traveling 20
20. said drums in a predetermined position relative member on said feed screw for imparting up and
to said spray gun; means for moving said spray
down movement to said arm; an upright shifter,
gun support downwardly toward said table ; auto
matic means operable when said spray gun sup rod reciprocably mounted in said housing; stops
port has reached a predetermined position to on said shifter rod adapted to be engaged by said
25
25 reverse the direction of said spray gun support traveling member; and means at the lower end of
said
shifter
rod
for
throwing
said
:feed
screw
moving means; and automatic means including
' an adjustable stop operable when said spray gun
support has reached a predetermined upward. po
sition to disengage said spray gun support mov-‘
30
ing means.
.
12. A machine for applying a metal coating to
brake drums and the like embodying: a table;
means for rotatably supporting said table; means
for rotatably ‘supporting 'a vplurality of brake
drums on said table; a main drive shaft; means
3.5 including
a maingear, coaxial with the table
supporting means, for rotating said drum sup
ports from said main drive shaft; means includ
ing a table clutch associated with said gear for
.40 rotating said table ‘from said main drive shaft,
said table clutch being coaxial with the table
.supporting'means; an upright housing arranged
in offset relation ‘with ‘the axis of said table;
' guide means on said housings; a spray gun sup
45 porting arm slidably mounted on said guide
-means; a spray gun mounted on said arm‘above ’
said table; means including an upright feed screw
in said housing for moving said arm; and means
' including a-olutch on said main drive shaft for
v50 rotating said feed screw inopposite directions.
13., A machine for applying a metal coating to
brake drums and they like embodying: a base
member; a table; means on said base member for
- rotatably supporting said table; means for rotat
clutch.
'
15.- A machine-for spraying brake drums and 'v
the like embodying: a table; means for rotat
ably supporting said table; means for rotatably 30
supporting a plurality of brake drums on said
table; a main drive shaft; means for rotating
said drum supports from said main "drive shaft;
means including a table clutch for rotating said
table from said main drive shaft; an upright 35
housing; guide means on said housing; a spray
‘gun supporting arm slidably mounted on said
guide means; a spray gun mounted on said arm
above said table; an upright feed screw in said
housing; means including a clutch member on‘ 40
said main drive shaft for driving said feed screw
in opposite directions; means including a travel
ing member on said feed screw for imparting
up and down movement to said arm; a socket
in the top of said housing; an upright shifter rod
having its upper end portion reciprocably mount
ed in said socket; an inlet port .and an outlet
port in the top of said socket; valves in said ports;
a conduit leading from said inlet port to an oil
reservoir in the bottom of said housing; a dis-' 50
charge conduit imsaid outlet port having'a'n out- '
let adjacent said feed screw; stops on saidshifter
rod adapted to be engaged by said traveling
member for reciprocating said rod; and means at ,
ably supporting a plurality of brake drums on
the lower end of said rod for throwing said feed
said table; a main drive shaft; means including .
screw
a main gear coaxial with said table-supporting
means for rotating said drum supports from said
16. A machine for applying a metal coating to ,
brake drums and the like embodying: a base mem
clutch.
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'
' main drive shaft; means including a table clutch ' her: a table; means on said base member for ro
tatably supporting said table; means for rotat
60 coaxial with said table-supporting means for ro
tating said table from said main drive shaft; an
upright .housing mounted‘ on said base member
in} offset relation with said table; guide means on
said housing; a spray gun supporting arm slid
65 ably mounted on said guide means; a metal sprayv
gun mounted on said arm above ‘said table; ‘an
upright feed screw in said housing; means in
cluding a clutch member on said main‘ drive
shaft for driving said feed screw in oppo
70 site directions; means including ‘a travelling
member on said feed screw for imparting up and
down movement to said arm; and means en
gageable by said travelling member to throw said
feed screw clutch and reverse the rotation of said
75
45.
feed
screw.
.-
'
"
-
'
.
60
ably supporting a plurality of brake drums on
said table; a main drive shaft; means including
a main ‘gear coaxial with the table-supporting
means for rotating said drum supports from-said
main drive shaft; means including ‘a table clutch 65
coaxial-with the table-supporting means for ro
tating said tablefrom said main drive shaft; an
upright housing mounted on said base member
in offset relation with said table“; guide means on
said housing; a spray gun supporting arm slid
70
ably mounted on said guide means; a metal spray
gun mounted on said arm. above said-table; a
feed screw bearing in the top of said housing; a
feed screw having its upper end mounted in said
bearing; a bottom feed screw bearing adjustably. 75
10
2,110,755
mounted in the bottom of said housing; a travel
projecting above said table; an upright feed screw
ing member on said feed screw for moving said
arm in said guide; and means including a clutch
member on said main drive shaft for rotating
means supporting said feed screw; a traveling
member on said feed screw; means engaged by
mounted adjacent-said guide member; bearing
_
said traveling member for moving said arm;
17. A machine for applying a metal coating to
brake drums and the like embodying a base
means including a reversing clutch on said main
member; a table; means on said base member
site ‘ directions;
said feed screw in opposite directions’.
for rotatably supporting said table; means for
10 rotatably supporting a plurality of brake drums
on said table; .a main drive shaft; means includ
ing a main gear coaxial with the table supporting
means for rotating said drum supports from said
main drive shaft; means including a table clutch
15 coaxial with the table-supporting means for- ro
tating said table from said main drive shaft; an
upright housing mounted on said base member
in offset relation with said table; guide means on
said housing; a spray gun supporting arm slid
'20 .ably mounted on said guide means; a metal spray
gun mounted on said arm above said table; means
including an upright feed screw in said housing
for moving said arm; means including a clutch
on said main drive shaft for rotating said feed
in opposite directions; and adjustable
25
means for locking said clutch in a neutral posi
tion.
'
18. In a device of the class described: a table;
means for supporting work on said table; means
30 for rotatably supporting said table; means in
cluding .a clutch and a main gear, both coaxial
with said table-supporting means for rotating
said table; a main drive shaft for driving said
' main gear and, table clutch; a table clutch op
erating shaft; means on said table clutch oper
ating shaft for actuating said table clutch; yield
drive shaft forrotating said feed screw in oppo
means
including
a
yieldable
member for engaging said table clutch; latch
means actuated by said table for holding said 10
table clutch in disengagement against the action
of said yieldable means; trip means adapted to
be engaged by said'traveling member for releas
ing said latch to permit the rotation of said table
and the engagement of said clutch; and means
operable by said latch means for disengaging said
feed screw clutch.
V
21. In a device of the class described: a rotat
able work supporting table; a support for said
table, means including a main gear and a clutch
both coaxial with the table-supporting means for
rotating said table; a main drive shaft for driving
said table clutch; bearing means supporting said
main drive shaft; an upright guide member ad
jacent said table in offset relation therewith; a
traveling arm having a portion thereof engaged
in said guide member and an extending portion
projecting above said table; an upright feed
screw mounted adjacent said guide member;
bearing means supporting said feed screw; a
traveling member on said feed screw; means
engaged by said traveling member for moving
said arm; means including a reversing clutch on
said main drive shaft for rotating said feed screw
in opposite directions; means including a yield
able - member for engaging said table clutch;
able means for moving said table clutch actuat
ing means to engage said table clutch; a latch
member on said clutch operating shaft; a stop
40 on said table adapted to engage said latch and
hold said table clutch in disengagement against
the action of said yieldable means; and means
for releasing said latch means from said stop
table and the engagement of said clutch; means
operable by said latch means for disengaging
to permit the engagement of said clutch by said
said feed screw‘ clutch; and means including a
yieldable means.
19. In a device of the class described: a rotat
said trip mechanism engageable therewith after
able work-supporting table; a support for said
table; means including a main gear and a clutch
both coaxial with the table support for rotating
50 said table; a horizontal main drive shaft for driv
latch means actuated by said table for holding
said table clutch in disengagement against the
action of said yieldable means; trip means adapt
ed to be engaged by said traveling member for
releasing said latch to permit the rotation of said
cam member‘ on said table and a lever member in 45
a predetermined rotation of said table for dis
engaging said table clutch and reengaging said
feed screw clutch.
22. In a device of the class described: a rotat
ing said table clutch; bearing ,means supporting
able work supporting table; a support for said
said main drive shaft; an upright guide member
adjacent said table in o?'set relation therewith;
table, means including a main gear and a clutch
both coaxial with the table-supporting means for
rotating said table; a main drive shaft for driving
a traveling arm having a portion thereof en
55 gaged in said guide member and an extending
portion projecting above said table; an upright
feed screw mounted adjacent said guide member;
bearing means supporting said feed screw; a
traveling member on said feed screw; means en
60 gaged by said traveling member for moving said
arm; means including a reversing clutch on said
main drive shaft for rotating said feed screwin
opposite directions; and trip means adapted to
be engaged by said traveling member for throw
65 ing said feed screw clutch.
'
50
said table clutch; bearing means supporting said 55
main drive shaft; an upright guide member ad
.jacent said table in offset relation therewith; a
traveling arm having a portion thereof engaged
in said guide member and- an extending portion
projecting above said table; ‘an upright feed 60
screw mounted adjacent said guide member;
bearing means supporting said feed screw; a
traveling member on said feed screw; means en
gaged by said traveling member for moving said
arm; means including a reversing clutch on said 65
20. In a device of the class described: a rotat
able work supporting table; a support for said
main drive shaft for rotating said feed screw in
opposite directions; trip means including a com
table, means including a main gear and a clutch
pression spring engageable with; said traveling
both coaxial with the table-supporting means for ‘ member at the bottom of its movement for throw
ing said feed screw clutch to reverse the rotation 70
70 rotating said table; a main drive shaft for driv
ing said table clutch; bearing means supporting
said main drive shaft; an upright guide member
adjacent said table in offset relation therewith;
a traveling arm having a portion thereof engaged
75 in said Tuide member and an extending portion
of said feed screw.
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23. In a device of the class described: a work
supporting table; means including a clutch for
rotating said table; a main drive shaft for driving
said table clutch; bearing means supporting said 75
a110,?»
main drive shaft; an upright guide member ad
jacent said table; a traveling arm having a por
tion thereof engaged in said guide member and
an extending portion projecting above said table;
an upright feed screw mounted adjacent said
guide member; bearing means supporting said
feed screw; a traveling member on said feed
screw; means engaged by said traveling member
for moving said arm; means including a reversing
10 ‘clutch on said main drive shaft for rotating said
feed screw in opposite directions; means including a yieldable member for engaging said table
clutch; latch means associated with said table
for holding said table clutch in disengagement
15 against the action of said yieldable means; a trip
bar adjacent said feed screw; a stop on said trip
bar engageable by said traveling member at the
bottom of its movement; means operable by the
downward movement of said trip bar to throw
said feed screw clutchinto a reverse position;
another stop on said trip bar engageable by said
traveling member at the top of its stroke; and
means operable by the upward movement of said
trip bar to disengage said feed screw clutch and
25 release said latch, thereby permitting the engage
ment of said table clutch and the rotation of
said table.
24. In a device of the class described: a work
' supporting table; means including a‘clutch for
30 rotating said table; a main drive shaft for driving
said table clutch; bearing means supporting said
main drive shaft; an upright guide member ad
jacent said table; a traveling arm having a por:
tion thereof engaged in said guide‘ member and
an extending portion‘ projecting above said table;
an upright feed screw mounted adjacent said
guide member; bearing means supporting said
feed screw; a traveling member on said feed
screw; means engaged by said traveling member
40 for moving said arm; means including a revers
ing clutch on said main drive shaft for rotating
said feed screw in opposite directions; means in
cluding a yieldable member for engaging said
11
table clutch; latch means associated with said
table for holding said table clutch in disengage
ment against the action of said yieldable means;
a trip bar adjacent said feed screw; a stop on said
trip bar engageable by said traveling member at C21
the bottom of its movement; means operable by
the downward movement of - said trip bar to
throw said feed screw clutch into a reverse posi
tion; another stop on said trip bar engageable by
said traveling member at the top of its‘ stroke; 10
means operable by the upward movement of said‘
trip bar to disengage said feed screw clutch and
release said latch, thereby permitting the engage
ment of said table clutch and the rotation of said
table; and means including a cam member on
said table and a lever member in said trip mecha'~
nism for disengaging said table clutch and re
engaging said feed screw clutch.
25. The i-_:thod of treating brake drums and
the like, which includes: subjecting the wearing
surface thereof to the action of a hot metal spray;
rotating said drum during such spraying action;
and effecting a gradual reciprocating axial move~
ment between said drum and said spray during
the rotation of said drum so as to build up a
matted hard metal coating in said drum.
26. The method of treating a brake-drum
which comprises subjecting the- wearing surface
thereof to the action of a spray of molten metal‘ particles, rotating said drum during such spray 30
ing action, and effecting a progressive relative
axial movement between said drum and said
spray during the rotation of said drum, said axial
movement for each rotation of said drum being
substantially less than the width of the area 35
covered by said-spray, whereby there is built up
on the wearing surface a coating of‘ hardening
material in overlapping layers, forming a cover
ing of minute metal particles bonded to one an
other and to the brake drum to form a matted
coating on said surface.
PURLING A. BLEAKLEY.
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