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Патент USA US2110931

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March-1'5, 193s. ‘
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' H. |. DYER ET AL_
4 sheets-sheet 1
Filed Oct. 25, ‘1935
, Haraldl‘. 261',‘
OscarJ.’ n.’
March 15, 1938.-
Filed'oct. 25. 1955
4 Sheets-Sheet 2
l-laraldl ?yer;
BYOsrarJ'?/?edlanal I - M,2%%@Yz/M
March ~15, 1938‘
,4 Sheets-Sheet s
Filed 001,. 25, 1955 '
‘7714.’ Mimi~
March 15, 1938.
Filed 0ct.- 25,_ 1935
4 Sheets-Sheei
- ‘Harold I.
~ 055421171.’ ?edlzllldf
1 4
PatentcclMar. 15, 1938 l
Harold I; Dyer and Oscar vJ. w. Hedlund, Battle'
Creek, Mich, assignors, by mesne assignments,
to Eaton Manufacturing Company, Cleveland,
, Ohio, a corporation of Ohio .
Application October 23, 1935, Serial No. 46,252
17 Claims. (Cl. 51--103)
The present invention relates generally to ma—.
chine tools and more particularly to machine tools
embodying automatic mechanism for feeding ar
ticles to working position, and for conveying com
pleted articles away from such working position.
conveyor chain; in which clips embody resiliently
related elements, between which the articles may
be snapped, either manually} or automatically,
and from which at the completion of a grinding,
machining or other operation the articles‘may be 5 '
removed either manually or automatically; and
Objects of the present invention are to provide ‘ in which at the working position a resilient ele
ment of each clip acts to urge the article into
engagement with the previously mentioned sup- ,
a machine tool, adaptable for grinding, machin
ing or other operations, which is fully automatic
in operation, relatively simple in construction, and
10 in operation substantially reduces the cost of
such operations.
Further objects of the present invention are to
provide a machine tool embodying automatic
means for successivelypresenting articles to be
ground, machined, or otherwise operated upon to
a working position and to successively convey-the
completed articles‘ away from such working po
sition; to provide such a machine, tool in’ which
the feeding mechanism operates in conjunction
20 with chucking mechanism for the articles posi
tioned at the working position; in which the
porting mechanism.
Further objects of the‘ present invention are,
to provide a machine tool of the above stated gen
eral character embodying an endless‘ conveyor
type magazine feeding device, and in whichthe
working position is located at one ‘of the curved , l5 _
portions of the path followed by the articles; in
which the supporting mechanism is positioned in
the path of the articles; in which the magazine
is movable bodily with respect to the supporting
mechanism to enable the articles to successively 20
clear the supporting mechanism in being trans
ferred from the working position to the dis
‘charge position; in which the magazine is. re
ciprocable in a rectilinear path in timed relation
to its notching movement so that, at the comple
tion of a grindingmachining or other operation,
chucking mechanism. is movable to engage and
release the articles; in ‘which the feeding mech
anism and the chucking mechanism operate in
2.5 timed relation; and in which the chucking mech
anism may be adjusted to predetermine the di- the magazine moves bodily with reference to the
mensions of the completed article.
supporting mechanism carrying the just ?nished
Further objects of the present invention are to article away from such support, and is then
provide a machine tool for grinding, machining, notched
one step, carrying the just completed are
or otherwise operatingv upon articles, in which ticle beyond the range of the support and pre~
the articles are loaded in a magazine, selectively senting the next article over the support, and in
movable to present the successive articles stored which the notching of the magazine is effected in
therein at a working position and to convey the response to its reciprocation.
articles away from such working position; in
Further'objects of the present invention are to 35
which the magazine is adapted for either manual provide, in a machine tool of the above generally
or automatic loading, and for either‘manual or stated character, improved timing mechanism
automatic unloading; and in which the articles for timing the‘ duration of each grinding, ma
are retained under the control of the magazine chining or other operatiomand for automaticalwhile at the working position. '
‘1y actuating the feed mechanism to‘_ remove a
Further objects of the present invention are to completed article and present a new article to the
provide a machine tool of the above stated char
operating mechanism at‘the completion of such
acter in which the chucking mechanism is effec
tive to ‘resiliently urge the article into engage
"ment with‘ a grinding or abrasive element; and
in which the chucking mechanism cooperates with _
stop mechanism 'eiiectlve to automaticallyter
minate the grinding, machining or other opera
tion when the dimensions of the article reach a
desired value.
Further objects of the present invention are to
provide a machine tool of the general character
above stated in which the magazine feeding mech
anismcomprises an endless conveyor chain,,uni—
directionally driven; in which the articles are
carried in a plurality of clips disposed around the
predetermined‘ ?nishing.
_ Further objects of the present invention are to
provide, in a machine tool of the above generally 45
stated character, improved'clutching mechanism
responsive to the operation of the above stated
timing mechanism, and adapted to control the
mechanism for actuating the feeding mechanism
in step by step manner and for actuating the 50
supporting mechanism between work engaging»
and work released position.
'' With the above and other objects in view,
which appear ‘in the following description and in
the appended claims, preferred embodiments of, 55’
the present invention are illustrated in the ac
companying drawings throughout the several
views of which corresponding reference charac
'. ters are used to designate corresponding parts and
in which:
Figure 1 is a general view in side elevation of
the improved machine ‘tool;
successively feed the valves to and from a work
ing position; automatically controlled chucking
mechanism positioned at the working position for
receiving the valves fed thereto by the magazine
and for supporting and rotating the valves in
cooperative relation to a grinding wheel, lathe
tool or other operating device; and timing mecha
Fig. 2 is an elevational view taken along the I nism for effecting, in timed relation, the feeding
line 2—2 of Fig. 1;
action of the magazine and the chucking and
10' Fig. 3 is a view in side elevation, partly in sec 'unchucking action of the chucking mechanism.
tion. and with certain of the parts broken away,
The magazine is illustrated as comprising an
of the structure shown in Fig. 1;
endless chain trained over spaced sprocket wheels,
Fig. 4 is a fragmentary view in vertical sec
and being provided along its length with a plu
tion, taken along the ‘line 4-4 of Fig. 2;
rality of springlike clips, each adapted to receive
15 ‘Fig. 5 is a view in rear elevation, with certain
a valve. The valves may be inserted in the clips
of the parts broken away, and partly in section, either manually or automatically. The magazine 15
of the structure shown in Fig. 1;
is disposed to be periodically notched, each notch
Fig. 6 is a fragmentary detail view, taken along ing action e?‘ecting movement of one clip- and the line 6-6 of Fig. 5;
valve away from the working position and pre
Fig. 7 is a fragmentary detail view, taken along senting the next clip and valve to the working
the line 1—‘| of Fig. 6;
position. The valves are retained within the clips
Fig. 8 is a fragmentary view corresponding in at the working position, ‘but, in certain in
general to Fig. 2, but illustrating the magazine stances, are there provided with additionalbear
in raised position;
ing supports disposed in the path of travel of the
Fig. 9 is a fragmentary view illustrating the valves and which cooperate with the above men
application of the present invention to the grind
tioned chucking mechanism. To enable the valves
ing of’ the head of the valve;
to clear the just mentioned bearing supports in
Fig. 10 is a modi?ed view illustrating the use being moved away from the working position,
of ‘the present invention in grinding seats in the the magazine is disposed to be moved bodily to a
30 heads of valves;
position in which the path of travel of the valves 30v
Fig. 11 is a modi?ed view illustrating the ap
does not include the bearing supports. This bod
plicability of the present invention to the grind
ily movement is accompanied by the above men
ing of the stems of valves;
tioned notching movement of the magazine and
Fig. 12 is a modi?ed view illustrating'the use a feature of the present invention resides in
35 of the invention in conjunction with a machine effecting the notching movement in response to
the bodily movement. The notching movements
Fig. 13 is a view corresponding in general to of the magazine transfer the valves from work
Fig. 2 but illustrating a different positioning of ing position to a discharge position, at which they
the work supporting element with reference to are preferably removed from the clips by cam
40 the magazine;
mechanism disposed in the path of travel of the
Fig. 14 is a view taken along the line l4-l4
of Fig. 1, illustrating a preferred method of recip
The construction and disposition of the chuck
rocating a grinding wheel during rotation there
ing and work supporting elements, at the work
ing position, depend upon the character of the
15 is a partial view illustrating a, dressing operation being performed upon the valves or
adapted to be carried upon the work other articles. In grinding the tappets of the 45
supporting element of the machine; and .
Fig. 16 is a view of a modi?ed clip construction.
In its illustrated embodiment, the improved.
50 machine tool of the present invention is applied
to the grinding and machining of valves, the
several views illustrating the use of the machine
in grinding the valve heads, the ends of the valve
stems, the grinding of seats on the inner faces
55 of the valve heads, and the machining and grind
ing of the valve stems. As will appear from a
. valves, the valve head is supported and friction
ally driven by the‘ collet described below, the
previously mentioned bearing standards are pro
vided to support the valve stem, which is retained
within the bearing standard by the magazine
clips, and the tappet is presented to a grinding
wheel supported adjacent the grinding position.
In grinding the heads of the valves, the valve tap
pet is supported and frictionally driven by the 55
collet, the bearing standards being arranged to
complete understanding of the present invention, support the valve stem. In this instance an addi
however, the principles thereof may readily be tional
standard is preferably provided to
embodied in machines speci?cally designed to ‘supportbearing
the valve head. In grinding the seating
perform other operations upon valves as well as
of the valve heads, the valve tappet is sup 60
to operate upon objects other than valves. The - faces
ported and frictionally driven by the collet and a
illustration of the present invention, according
cooperating dead center or additional collet is
ly, with reference to speci?c objects such as valves, preferably provided to support the valve head.
is to be regarded in an illustrative and not in a
In this instance, the supporting ‘standards for the
65 limiting sense. While, as appearsv hereinafter, a
stem may be dispensed with, if desired. Similarly,
single machine may be selectively used to' per
in grinding the,valve' stems or in applying the
form each of the above operations, _as well as feeding and chucking structure to machine lathes,
others, thus providing a machine of great utility, one end of the valve is preferably supported
it may be desirable under some production re
within the collet described below and the other
70 quirments, to use a battery of the machines, each end is either supported on a dead center or upon
machine being adapted to perform one individual another collet.
~ operation upon a valve or other articles. .
In all of the above operations, the improved
In the form illustrated, the present invention collet structure of the present invention is auto
embodies generally a magazine adapted to be matically adjusted between valve engaging and
75 loaded with a plurality of valves and adapted to retracted positions, being moved to valve engag 75
ing position upon the n'otching of a valve to work
ing position by the magazine and being automati
lustrated arrangement comprising bifurcated
cally withdrawn to the retracted position, re
leasing the valve, at the termination of a prede
cam bar 23 (Fig. 2) extending into the path of
termined grinding or machining period. The
collet is'provided with a loading spring through
which it is continuously urged to the valve en
gaging position, and by which it is also gradu
occur either automatically or manually, the il
ally fed into the grinding wheel or other operat
ing device. Stop mechanism arranged either to
" the valves N on the discharge side of the ma
chine. The two arms of cam 23>are positioned so
that in the step by step movements of the con
veyor chain l2, effected as later described, the
?nger I 3 and springs l5 pass between them. En
gagement of’ cam 23, however, with a valve l0
interrupts the movement of the?latter and ?exes
engage a portion of the valve or to operate direct
the springs i5 sumciently to" release the valve
ly upon the collet, is preferably provided to limit
the feeding movement of the valve into the grind
l0 and permit it to freely fall into any suitable
collecting means. An alternative clip construc
tion is shown in Fig. 16, comprising spaced U
shaped ?ngers i3’, and a single intermediate 15
ing wheel or other operating device, so that the
15 machine may be accurately pre-set to provide a
?nished valve of desired dimensions.
The timing mechanism is illustrated as com
prising a. pair of cams, one of which is operative
spring l5’. The modi?ed clip II’ is secured to
chain l2 in the same manner as the clip.
The upper sprocket wheel I4 'is rotatable upon .
ly connected to the magazine for reciprocating it,
a stub shaft I8 which may be formed integrally
with or suitably secured in forwardly extending 20
the collet to e?’ect movement of it from the valve . relation to'a collar 20. The inner end of the sep
arately formed hub 22 of sprocket wheel H bears
engaging to a retracted position. The cams nor
mally are at rest and at predetermined timing against the outer face of collar 23 and the outer
intervals are givew one complete revolution and face of hub 22 is engaged by a washer 24, re
tained in place on shaft l8 by a nut 26. Collar 25'
25 again brought to rest. Preferably and‘as illus
20 and the other of which is operatively connected, to
- trated,~a continuously acting brake. is provided
20 ?ts over the upper end of a reciprocating rod
to insure that the cams and consequently the
magazine and collet movements will be prompt
or standard 28, and is preferably provided with
an adjusting stud 30, the lower end of which
' 1y interrupted.
abuts the upper end of standard 28.
As will be
30 - The timing interval is determined by a sprocket understood, adjusting stud 30 is effective to ad 30 J
chain of adjustable length carrying a cam adapt- ' just the axial position of collar 20 upon standard
ed to engage a dog and move the latter.- The
movement of the dog actuates ‘suitable clutch
28, and consequently to adjust the spacing be
tween sprocket wheels I! and i6.
The lower sprocket wheel i6 is similarly rotat
ably carried upon a shaft 32 formed integrally‘ 35
The machine also embodies a dressing ?xture‘ with or secured in forwardly extending relation
for the grinding wheel, which may be accurate ,to a boss 34. Boss 34 is suitably secured to the
ly positioned and adjusted with reference to the, lower end of the standard 28 by pin'36. The
work engaging‘ position ‘of the collet, to thereby rear face of the separately formed hub 35 of
dress the grinding wheel to a predetermined spac
sprocket l6 abuts the boss 34, and the front face 40
. ing between the work engaging position of the thereof is engaged by a washer 39 held in place
collet and the grinding wheel surface.
on shaft 32 by nut 38. The hub 35 of sprocket
mechanism to clutch the previously mentioned
cams to a source of power.
» i5 is also provided with a plurality of pins 40, ar
Magaeine feeding mechanism’
Considering the magazine feeding elements in
detail, and referring first to Figs. 1, 2, 3, 4 and 8,
the tappet valves ID to be ground are carried in
clips ll_ upon a magazine formed of an endless
sprocket chain l?, which passes over upper and
lower sprocket wheels I4 and i8.
Each clip ll comprises a. V-shaped ?nger l3,
which supports the stem of the valve l0 and is
ranged in a circle concentric with shaft 32 and
which, ‘as described later, cooperate with a piv
otally carried dog ‘2 to notch the sprocket chain
l2 around in step-by-step manner and, conse-_
quently, to successively feed the valves Ill to and _
from working position.
The standard 28 is slidably guided within bosses 50
50 which may form a part of the machine frame
and, intermediate its ends, is provided with a
positionedjbetween a pair of springs l5, adapted; transverse pin 52 secured in place therein bya
to overlie and resiliently urge the valve Ill into'
engagement with ?nger l3.
Finger l3 and
springs l5 are suitably secured as by one or more
studs I‘! to the outwardly turned ends IQ of the
specially formed links 2iv of chain l2.
sive clips ll, along chain l2, depends upon the
size of the objects to be supported within the
clips. It will also be understood that a valve
may be snapped into a clip II -by pressing it
between the outer ends of the ?nger I3Vand the
springs l5, which pressing separates'springs l5
from ?nger l3 sumciently far to permit inser
tion of the valve.
chine frame, thus preventing axial rotation of
the standard 23, and are disposed for engage
It will . ment by‘ the bifurcated arm 58 of a bell crank
v be understood that the spacing between succes
set screw 54. The respective ends of pin 52 ex
tend through guide slots 56 formed in the ma
If desired, suitable hopper
. mechanism may bev provided to automatically
load the clips II with valves l0. With the illus
trated machine, however, the clips vIi are man
60, whichis pivotally mounted within the ma
chine frame upon a shaft 62. As described in‘ 60
more detail, under the sub-heading “Timing
mechanism", bell crank 60 is periodically oscil
lated from the illustrated position through a pre
determined angle and then returned to the illus
trated position. This movement of bell crank 60
causes a corresponding movement of standard 28
and, consequently,“ the entire magazine com
prising the conveyor chain l2 and the sprocket
wheels l4 and I6 from the lower position shown
in Fig. 2 to the upper position shown in Fig. 8.
of the magazine. A guide bar 3| is preferably , This reciprocatory movement of the magazine
provided to aid the operator in properly posi
is utilized in the illustrated embodiment to lift
ually loaded, the loading occurring at either side
tioning the valves in the clips. _ Similarly, the un-'
75 loading of the valves in from the clips ll may
the particular valve lll'previously operated upon ‘
away from the work support and, also, to effect
4 .
sumcient notching movement of the magazine to
bring the next valve into the working position.
of collet ll is conventionally ?tted into the outer
end of a drive shaft 84. Shaft 84 is slidably sup
As best shown in Figs. 3 and 8, the previous- ' ported withina sleeve 88, but is secured against
ly mentioned dog 42 is pivotally supported by a rotation with respect to sleeve '8 by a key 9.
pin 64, upon a bracket 56, either forming part of
secured in shaft 84, and disposed to ride in an
or suitably secured to the machine frame, and
the lower and inwardly turned end 68 thereof
Shaft II is provided with a reduced portion 84,
elongated slot or keyway 82 formed in sleeve 88.
extends over the face of the lower sprocket wheel _ over which a compression spring 9‘ is placed, one
end of which bears against the shoulder-OI and
the other end of which bears against the inwardly 10
extending shoulder I" formed ‘near the right
hand end of sleeve ll. Spring 98 is continually
gagement interrupts the upward movementv of ~ under compression, and urges shaft 86 and collet
such pin and, accordingly, continued upward II to the left into position to engage the head of
15 movement of the magazine results in rotation of a valve II.
The upper end of a cam arm I02 bears against
the sprocket chain I2, the amount of rotation
equalling the spacing between successive clips II. the inner face of arecess III! formed in a collar
During the rotative movement, a pin 40, on wheel I", which is adjustably ?xed axially of shaft
I6, adjacent the one engaging‘ the dog 42, moves 86 by the lock nuts IID. Lock nuts IIII bear
around to a position behind the dog, which, as against the outer ring II2 of a ball bearing unit 20
II4, the inner ring of which is received within a
shown in Fig. 3, is formed to permit such move
ment. When the magazine is’ lowered to the recess within the collar I08. As described more in
position illustratedin Fig. 3, such succeeding pin detail under the sub-heading “Timing mecha
40 engages the inner sloping surface of the lower nism", cam arm III2 is intermittently given a piv
otal movement in a clockwise direction from the
426 end 88 of the dog 42 and cams the .dog 42 in a
position illustrated in Fig. 3 through a predeter
clockwise direction, as-viewed in Fig. 3, permit
ting such pin to pass below the lower end of dos mined angle, and then returned to the illustrated
42 to aposition in which it is effective to'coop— position. In so moving, cam arm I02 carries with
erate with dog 42 at the next‘ reciprocation oi’ the it shaft 46 and collet 80, moving the latter ele
30 magazine. The spacing between pins 40, and ments to the right out’ of engagement with the 30
the upward movement of the magazine, being valve I0 previously in working position, and out
uniform, it will be understood that uniform of the path of movement" of the next valve III to
be moved to working position, and then permits
notching movements of the magazine are suc
cessively effected. If desired, braking or other a return movement of collet III and shaft 86 under
mechanism may be provided to releasably retain the in?uence of spring 96. The movement of
the magazine in each notching position. In shaft 86 and collet 80 to retracted position imme
practice, it is found that the friction of chain I2 diately precedes the previously described recipro
cation and rotation of the magazine, and the re
and wheels I4 and I8 is sufficient, however.
‘ I G in the path of the previously mentioned pins
40. In operation, an upward movement of the
magazine brings one of the pins 40 into engage
ment with the lower end 68 of dog 42. This en
Valve supporting and driving mechanism'
Referring runner to Figs. 1, 2, a and a, two
turn of collet III to valve engaging position im- -
mediately follows the return of the magazine to 40
the lower position.
Incertain instances, it is found satisfactory to
similar, aligned standards ‘III, each provided at
its upper endwith a V-groove ‘I2, are pivotally» permit the limit of the return movement of shaft
.6 and collet 80 to be determined by the engage
secured to the machine frame 13, by studs ‘I4, ad
. jacent the lower magazine sprocket I6, to form a '
upon shaft 86 to facilitate this. Preferably, how
tion of the standards with respect to the maga
- ever, additional stopmechanism is provided to
. zine is such that, with the parts in the grinding
ment between shoulder I09 and cam arm I02 and,
as stated above, collar I08 is adiustably positioned
bearing within which each valve III is supported
during the grinding thereof. The vertical posi
positions shown in Fig. 2, the finger I3 is spaced
somewhat below the lower edges of the V-grooves
12 in standards ‘I0, so that all of the support for a
valve is provided by the standards ‘I0, and the
spring I5 is‘ ?exed upwardly somewhat from its/
normal position and continuously urges the valve
I0 into the V-grooves ‘I2.
accurately determine the minimum spacing be
tween the surface of the abrading wheel III, de
scribed hereinafter, and the collet 80, so that the.
machine may be accurately pre-set to grind the
valves to selected ?nal lengths. Where, as shown
in Fig. 3,‘ the tappet of the valve is being oper
ated upon, the valve head is found to provide a
In the upper position ‘ convenient element to be engaged by this addi
tional stop mechanism. ‘As shown in Fig. 3, the
‘stop ?xture I I6 comprises a pair of spaced rollers
III, adiustably mounted upon a bracket I 20,
.60 which, as previously described, occurs as an in
which may be adiustably secured to the machine 60
cidé'nt to the movement thereof to the upper _. frame in any suitable manner, as by the stud I22,
position, a clip II and valve I 0 previously located ' which passes through an elongate slot in the ma
at the working position, are moved to a position chine frame. The rollers I I8 bear directly against
below and to one side of the standard ‘III, and the the underside of the head “In of valve I0,_and thus
next succeeding clip II and valve I 0 are moved afford a positive limit to movement thereof to the
to a position from which, during the return and left as viewed in Fig. 3. The spacingv between
downward movement of the magazine, they are rollers II. and wheel II6, being conveniently ad
brought into engagement with the standards It. justable, it will be evident that the machine may
The mechanism‘ for securing the valves ID in readily be set to provide a desired ?nal length 70
correct axial position at the working position and of ‘valve III. when shaft 86 and collet 80 are
for rotating them,.comprises a chuck or collet 80, moved into engagement with the head of valve II)
the outer face of which is suitably recessed at '2 at the beginning of a grinding operation, the ex
to receive and provide a frictional drive for the cess length of valve Il_ prevents engagement be
76 head Ilia of a valve III. The tapered shank l4 . tween the valve head and the rollers I III. As the
of the magazine, shown in Fig. 8, the standards
12 are out of the path of travel of the clips II,
so that, during the rotation of the magazine
erindinébrbs‘résses; hévivievélrkdii?né'rhiéhlvaire
"his contiauouslyaursed into ‘engagement. with;
grinding wheel I I6 by thecompression spring, 86, .
they ,-valve 1 head gradually ‘approaches’ the . rollersv
I I8, and upon vengagement therebetween, a, fur-v .
ther feedof valve; I8 intothe grinding wheel is,
prevented andthcggrinding action is automatical
ly interrupted.
I I,
-. .
In certain useslof'the improved machine of-fthe
present invention,‘ as described in, detail herein
after, the article beingoperated upon does not
present a surface against. which the stop mecha--,
' " H
Timing mechanism
. Considering now'the mechanism for, releasing
the'compl'eted valves from the collet 80, and for
intermittently actuating the magazine to effect
the removal from the 'work supporting standards
of a'completed valve and to notch the magazine‘
around the distance between adjacent valve sup
' porting clips, and referring particularly to Figs.
1, .3 ‘and 5, the mechanism comprises generally
a continuously driven shaft I10, a magazine cam 10
I12, aicdilet cam I 14, a clutch designated gen
erally as I16 for clutching cams {I12 and I14 to
the shaft'I'I0,v and timing mechanism comprising
considered desirable to provide the machinewith , a dog I18 for intermittently actuating clutch I16, 15
15 additional stop mechanism which may act. direct
The magazine cam I12 and the collet cam I14 ‘
ly upon the shaft 86 andthe collet 80. In Fig. 3, are both press ?tted upon a sleevev I80, within
this additionalstop mechanism comprises the ad-_. which the shaft I10 is freely rotatable, and which
justing stud I24, threaded into a boss I26 which is axially slidable within the movable member
extends upwardly from the previously mentioned I82 of clutch I16. Rotation between sleeve I80
nism I I6 may‘ readily'actand for. this reason it
bracket I06. ‘The end of stud I24 bears against
the cam arm I02, and thus provides a limit to its
motion in a counter-clockwise direction as viewed
in Fig. 3. Thus arm I02 through its engagement
with shoulder I 0801f collar I08 provides a, posi
25 tive and accurately adjustable limit to the move
ment to the left of shaft 86 and collet 80.
\‘During the grinding action, the rotation of the .
abrasive wheel H8 is preferably accompanied by
a corresponding rotation ofthe valve‘ I0, and for
30 this ‘purpose, the previously mentioned outer
sleeve 88 to which ‘shaft 86 iskeyed, is connected
to an external source of power represented by the
pulley I30 (Fig. 5) through a bevel gear I32se-I
cured upon sleeve 88 by set screw I34 and key I 86,
35 and a corresponding bevel gear I38 secured upon
andclutch member I82 is prevented by key I84
(Fig. 6)} ‘The previously mentioned magazine
actuating bell crank 60 is pivotally connected by
a pin ‘I86 to one end of a link I88 of adjustable
length, the other end of which is pivotally con
nected by pin I90 to one end of a cam arm I92.
The other end of cam arm I92 is pivotally carried
by an idler shaft I94, journaled in a bracket I86
which may comprise a portion of the machine
frame,_and intermediate its end is provided with 30
a roller I08 the surface of which rides upon the
surface of the magazine cam I12. The parts are
shown in the positions occupied during periods of
rest and cam I12 is preferably so shaped that,
during the course of a complete revolution of the
latter, the magazine is moved at substantially
shaft I40 by the, lock pin, I142. As appears clear constant speed from the position illustrated in
ly in Fig. 5, shaft I40 carries the drive pulley’ I30 Fig. 3 to the upper position illustrated in Fig. 8,
and is directly driven thereby through the‘lock
Sleeve 88 and shaft 86 are suitably supported
between generally rectangular housing members
and is then returned at susbtantially constant
speed to the lower position illustrated in Fig. 3.
The previously mentioned cam arm I02 con
nected to the shaft 88 and collet 80, is disposed for
I50 disposed in suitably spaced relation and se-. ‘actuation by the generally heart-shaped collet
cured between upper and lower frame brackets
I52 by the studs I54. Preferably and as illus
trated, roller bearing units I56 of the combined
radial and thrust type are interposedbetween the
housing members I50 and sleeve 88. The outer
rings of the roller bearing units I56 are radially
and axially ?xed with respect to the associated
’ housing members 150 by being fitted within the.
recesses I58 formed’ in the outer. faces of the
cam I14 through crank arms 200 and 202 and the
cam arm-204. Crank arm 200 is secured by pin '
206 to the shaft I04, to which cam arm I 02 is also
secured by pin 208. The other end of crank arm
200 is pivotally connected by pin 2 I0 to the lower
end of the arm 202.
The upper end of arm‘ 202
in'turn ispivotally connected by pin 2I2 to the
cam arm 204. ‘Cam arm 204 is pivotally support
latter. The inner ring of the leftQhandroller ‘and rotatably carries a roller 2I4 which rides
bearing unit as‘ viewed in Fig.3, abuts a shoulder‘ upon the ""urface of the collet cam I14.‘ As will
1 I60 formed'in ‘sleeve 88. , The inner ring of the -_be evident; _a complete revolution of collet cam
' right hand roller bearing'unit abuts‘ astopcollar I14 from ‘the illustrated _and normal position
I6l which is secured upon sleeve 88 by the lock; thereof results in an outward and inward /swing-_
nuts I62. The ends of the housing are closed‘ by - ing'of cam arm 204, which is transmitted through
,ed‘upon-the previously mentioned idler shaft I94
end plates I64 which are secured upon the outer
links 202 and 200 to the cam arm I02.
faces ofv the housing _members I50 by studs I66.
I02, as previously described, withdraws collet 88 60
from'the illustrated workingposition to a-free
position out of range of ‘the magazine, and then
permits collet 80 to be returned to the work en
Packing" glands‘ I68 are‘ preferably interposed
between sleeve 88, collar I6I and the end plates
I84‘ to prevent theescape of lubricant from the
Cam arm
gaging position by the compression spring 86.
To insure that the cams I12 and I14 and, con 65
vAs an alternative to'positioning the work'sup
porting standards 10,» collet 80 and associated sequently, the magazine and collet. 80 will be
parts at the side ofthernagazine feeding, mech-' I brought promptly to rest at the completion of’
anis'm,» as described in detail above,‘the modi?ed‘ each intermittent-movement thereof, a continu
arrangement of Fig'.'13 maybe used; in which the
ous‘ly acting brake” 220 is preferably provided,
and is illustrated as being pivotally supported 70
standards10, collet‘8'0 and associated parts are upon ‘the previously mentioned pivot pin 62, and
positioned" ‘immediatelyfbelow the‘ vaxes - of ‘Y-the'
upperjand'v lower magazine'jdriving sprockets I 4' provided with a conventional 'shoe 222 which
and I6. __ ‘In, all other ‘respects, the ‘construction, bears upon the face of the collet cam I14. The
I as, Well ids. -. the i. driériatioamey ibe' ‘as’ 1118581718681 ‘ outerfac‘e of brake 220 is provided with a cored
out extension 226 which slidably receives a _pin 75
9,110,9s1 '
228 and a compression spring 288. The outer
218 passes beyond dog I18, dog 258 moves back
which may form a part of the main machine
biasa brake 228 into engagement with cam I14.
The braking force impomd on cam I14 is trans
mitted to cam I12, since both cams I12 and I14
this time, however, the raised cam portion 288
of clutch member I82 is aligned with dog 258 so
that the return movement of the latter isv inef
fective to unclutch the clutch members 248 and
I82. As the rotation of the latter members con
are press ?tted upon the same sleeve II, as
tinues, however, the axially angled portion 258
previously mentioned.
of the cam shoulder 254 engages dog 258 and
endofpin228bearsagainsta?xedstop282 'into engagement with clutch member I82.
frame, and, through spring 288, continually
The fixed member 248 of clutch I18 is secured
upon the continuously rotating shaft I18 by the.
locking pin 242, and thus rotates continually
continued movement of the former gradually 10
cams clutch member I82 to the right as viewed‘
in Fig. 5. The relation of the parts is such that
therewith. The right hand face of clutch mem
her 248, as viewed inFig. 5, is provided with
15 ratchet teeth 244, which cooperate with corre
spondir‘ ratchet teeth 248 formed on the left
hand face of the clutch member I82. One end
of a compression spring 248, which is received
in a recess formed in the clutch member I82,
20 bears against the end of such recess, and the
other end thereof,bears against the outer face of
clutch members I82 and 248, thus interrupting
the previously mentioned sleeve I88. Spring 248,
ing, dog 25!! is again in engagement with the ?at
thus continuously urges clutch'member I82‘ into
clutching relation with the ?xed clutch member
248, Clutch member I82 is retained, during pe
"riods of rest of the magazine and of the collet,
in the position illustrated in Fig. 5, out of en
gagement with the fixed member 248, by a dog
258, one. face 252 of which normally abuts a cam
shoulder 254 fonned on the outer‘ surface of the
clutch member I82. ‘The cam shoulder 284 is
provided with an axially angled portion 258.
Normally, the lower face 258 .of dog 258 is sup
portion of the cam shoulder 254 formed on the
clutch member I82, and the parts are thus in
ported upon the outer surface 288' of the clip
member I82, and is biased b this position by
a coil spring 282 whichsurrounds the dog shaft‘
284, and the opposite ends of which are wrapped
around the machine frame portion 288 and dog
258 respectively. / Dog 258 is non-rotatably se
cured with respect to“ shaft 284 by a key 288.
The previousb mentioned timing dog I18 is
suitably tumor-ted upon the outwardly extend
45 ing end at (log shaft 284, and the lower end
thereof is continuously urged, by spring 282, into
the path of a earn 218
1), formed on a
wheel 212, mating with sprocket teeth 218
formed on the periphery thereof. Wheel 212 is
continuously driven through the main drive shaft
I18. At successive, equal intervals, accordingly,
at or about the time a complete revolution of .
the magazine and collet cams I12 and I14 is
completed, the rightward camming movement of 15
clutch member I82 effects a ‘relean between
the driving connection for cams I12 and I14 and '
resulting in the stopping, accordingly, of the
movement of the magazine, and the axial move
ment of collet 88. At the'time of such unclutch
the position occupied by them prior to the clutch 25
ing action.
As will be understood, the timing period pro- I
vided by the timing chain_214 may be varied in
di?erent ways, as, for example,- by using a plu
rality of strikers 218 in spaced relation. Prefer 30
ably, however, this is accomplished by varying
the length thereof, by removing or adding links,
and by making corresponding adjustments of the
lower sprocket wheel 288 provided for timing
chain 214. The lower sprocket wheel 288 is .35
rotatably carried upon a stub shaft 282, the po
sition of which is adjustable upwardly and down
wardly within an elongated slot 284 formed in a
supporting bracket 288. As illustrated, bracket
288 is secured to the main machine frame by 40
studs 288.
The main drive shaft I18 is suitably journalled
within bosses 888 and 882which may form a part
of the main machine frame, and is connected to
the previously mentioned external source of power 45
comprising the pulley I88 through a reduction
gear 'unit comprising gears 884 and 888, and pin
ions 888 and 8". Gear 884 is suitably secured
to the outer or driving end of shaft I18, and mates
with the pinion 888. Pinion 888 and gear 888, are
suitably keyed to the previously identi?ed idler
shaft I84, and are removably secured in place
thereon by the nut 8I2. Gear 888 mates with and
is driven by the pinion 8", which is suitably'se
cured, as by being press ?tted over the hub 8“
thereof, to the main drive pulley I88. Preferably,
determined by the rate of rotation of shaft I18
and the lmgth of chain 214, cam 218 engages
‘the lower end of dog I18, and rotates the latter
inaclockwisedirectiomasviewedinl’lg. 1. This
rotation of dog I18 is transmittedrthmugh shaft and as illustrated, a protective enclosure 8" is
284 and causes a corresponding pivoting of the provided for the gear reduction unit and the drive
pulley I88.
wise direction (Fig. 8) away from the surface
0! the clutch member I82, and releasing the lat
ter. Upm being released, clutch member I82
moves totheleft, as viewed in‘Flg. 5, under the
Abrasive wheel supporting‘ mechanism
Referring particularly to Figure 14 and gener
ally to‘ Figures 1 and 3, the previously mentioned
influence of the cmnpression spring 248, bring
ing the clutch teeth 248 thereof-‘into clutching
.relationwiththeclutchteeth244 formedonthe
abrasive wheel “8 is carried upon and rotated
by a shaft 828 which is driven through a drive
pulley 822,\which may be connected by belting 824
lined-clutch member 248. As will be evident, this
action cmnplctes a drivim connection between
shaft 118 and the cams I12 and I14, in response
to any‘suitable external source of power. Shaft
828 is journaied within a bracket 828, which is
adjustable transversely in ways 821 of a bed plate
'10 to which the latter rotate. The argument between the chain earn 218
and the timing dog I18 is_momentary. only, but
continues long’ enough to- complete the above
driving connection. Upon the release of the
clutchdol 288. which occurs when chain cam
828'and may be locked therein by one or more 70
studs 888. Bed plate 828 is guided within ways
882 formed in a stationary part 884 of the ma
chine and is connected for reciprocatory motion
to a continuously driven member 888 through a
pitman 888.
During the rotation of grinding 75
the work engaging position. Throughout the
wheel Hi, accordingly, a reciprocating motion is
given it, to the right and left as viewed in Figure grinding action, collet 80 is continuously urged
14, whichlreciprocatory motion moves it back and to valve engaging position by spring 86 and thus .
forth across the face of the article being ground, vacts to automatically feed the valve into the
thus making more uniform the wear upon the face grinding wheel. When the head of valve i0 en
ga'ges the stop ?xture H6, or alternatively, when
of the abrasive wheel and introducing an addi
" tional component of grinding motion between the ' the cam arm liilengages the stop stud I24, fur
ther feeding movement of collet 80 and conse
wheel surface and the object. As will be under
stood, the source of power to which the driving, quently of ,valve i0, is prevented and the grind
ing operation is automatically terminated. It
belt 324 for wheel H6 is connected may be ar
ranged in various well known ways to absorb the will be understood that the timing interval as
determined by timing chain 214 is set to permit
reciprocatory movement of wheel “6. >
- completion of the. grinding operation within the
General Operation '
timing period.
Considering the operation as a whole of the
.As the completed valves are successively con
embodiment shown in Figs. 1 through 8 it will be veyed away ‘from the working position by the suc
understood that in preparing the machine tool ] cessive notching movements of the magazine,
for operation, the grinding wheel H8 is suitably they successively engage the unloading cam 23
adjusted within" its bed plate 328. to provide a and are thereby discharged from .the clips II and
may be collected in any suitable manner.
20 desired spacing between the surface thereof and
between the inner or work engaging position of Modi?ed grinding positions-Figures 9, 10 and 11
collet 80 as determined by the stop ?xture H6,
In. the figures described in detail above, the
or by the stop ?xture comprising the locking stud
I24. It will also be understood that the clips valves Iii are disposed to have their tappets
25 ll may be loaded with valves I 0 either before or ground, and the valve heads are received within
after the tool is placed in operation. Similarly, the collet 8B. The improved machine of the pres
the rotation and reciprocation of grinding wheel ent invention, however, maylalso be used for
' “6 may be initiatedeither before or after the ‘
grinding operations upon parts of the valves other
application of power to- the main machine tool
than the heads, and also upon objects other than
driving pulley I30.
Upon the starting of drive pulley I30 continu
ous'rotation is imparted to the main shaft H0
and timing chain 214, as well as to the collet
shaft 86 and collet 80. At regular intervals, de
35 termined by the rate of rotation of timing shaft.
fill, and upon the length of timing chain 214,
timing earn 218 engages and actuates the tim
ing dog H8 and the clutch dog 25!]. Clutch dog
25d upon being actuated, releases the movable
clutch member I82, which thereupon moves into
clutching engagement with the fixed clutch mem
ber 2M! and connects the magazine cam I12 and
, the ‘collet cam ill to shaft I10‘.
The consequent -
valves. Referring particularly to Figures 9, 10 30
and 11, arrangements for performing grinding
operations upon valves other than upon the valve
tappets, are illustrated.
In Figure 9, a valve ill is disposed in reverse
position upon the supporting standards 10, the
valve head l?a being presented to, the grinding
wheel I i6, and the valve tappet lilb being received
within the collet 80a. Collet 80a may correspond _
in all respects to the previously described collet
80 and be correspondingly controlled, with‘ the
supporting standard ‘Illa is preferably provided
having a V groove ‘12a corresponding to the pre
magazineupwardly from the initial lower posi
tion to a higher position and then returns it to
viously described V-grooves ‘l2, and 'disposed di
rectly under the head i 0a. As will be understood,
the lower position. During this movement, ‘which
standard ‘Illa may be supported upon the machine
frame in the manner previously described with
porting standards 10, the magazine chain is
50 notched around one step by the engagement of
the dog 42 by one of the pins 40, carried by
sprocket wheel l6, thus carrying said completed
valve away from the working position and mov
exception that the face recess is smaller. For
grinding the head Ilia of valve iii, an auxiliary
rotation of magazine cam I12 moves the valve
lifts, a completed valve ID from the work sup
reference to standards 10.
In Figure 10, the grinding wheel H6 is disposed 50,
to grind the seating face lllc of a valve l0, and in I
this instance, supplementary support for the valve ,
i0 is preferably provided by the dead centerH'IO-b
ing the next valve into such working position. - which is suitably supported in axial alignment
The rotation of collet cam I14 actuates the cam/ with the collet 80a. In all other respects the op 55
arm I02 to withdraw collet 80 from the valve
engaging position to a retracted position, and this
retracting movement is begun and progresses suf
ficiently far to disengage collet 80 from a com
pleted ‘valve In just prior to the beginning of the
reciprocatory movement of the magazine. Thus.
the completed valve is ‘released by the collet prior
to the initiation of its transfer away from the
working position. The con?guration of the collet
eration' and construction of the unit may be as
described in connection with theflrst embodi
In Figure 11 the grinding wheel H6 is disposed
to grind the surface of the valve stem Hid, and 60
in this instance it will be understood that the
'reciprocatory movement of wheel. I I6 as previous
ly described, serves to extend the'grinding action
throughout a desired portion of the length of the
65 cam 14 is such that collet 80 is not restored to
stem- Hid.‘ As an alternative to the use of the
the work engaging position until after the suc
ceeding valve has been positioned in the working
position by the return movement of the maga
dead center 10b described with reference to Fig
ure 10, to provide auxiliary supports for valves
l0, an additional collet‘?ilc, corresponding in all
zine. Thus, a valve is ?rst moved to working po
sition by the magazine, and then is engaged and
started in rotation by the collet.
As illustrated, the grinding wheel “8 and the
collet 80 remain in rotation throughout the trans
fer of valves so that the grinding action on the
75 new valve is initiated as soon as collet 80 resumes
respects to the previously described collet 80, may ,
be suitably and rotatably supported in axial _70
alignment with collet 80a.
Adaptation to machine lathes-Figure 12
, Figure 12 illustrates a further adaptation of
the magazine feeding device of the present in
vention, in this instance to a machine lathe. Re
fully automatic machine tool, adapted to mate
ferring to Figure 12,‘the magazine feeding'de
‘vice designated generally at "I may correspond
in all respects to the ?rst described embodiment
insofar as concerns the magazine feeding device
comprising the endless conveyor II, the timing
rially increase the rate and accuracy with which
valves or other articles may either be ground or
machined or otherwise operated upon. It will
also be evident that, although speci?c embodi
ments have been described in detail, various
mechanism comprising the timing chain 214, and
the mechanism for effecting rotation and axial
modi?cations may be made in the form, number
movement of collet II. In this instance, however,
the previously described side drive for collet II
scope of the present invention.
and arrangement of parts within the spirit and
We claim:
is replaced by an axial drive. The collet shaft
86a is driven by.a conventional lathe head stock,
to which it may be suitably splined. A conven
; tional tail stock "I is provided ‘to support the
15 ‘other end of the valve. Anillustrative lathe tool
is illustrated at I“.
In operation, the magazine and collet control
mechanisms operate as before, the magazine suc
1. In a machine tool, the combinatid’n of a
magazine ‘for supporting a plurality of articles
and successively actuable to feed said articles to
and away from a working position, chucking
mechanism located at said working position and 15
adapted to support an article in cooperative re
lation to a tool, means for eil'ecting relative bodily
movement between said magazine and said
chucking mechanism in conveying an article
away from working position, and means for actu 20
cessively feeding valves to-the working position
and conveying valves away from the working po
sition.- Upon the arrival of the valves at the.
ating said chucking mechanism to release an
working position, the collet is automatically
article prior and in timed relation to said relative
moved to engage the head of the valve and se
bodily movement.
cure it between the collet, and the' corresponding
tail stock 382. At the expiration of a predeter
mined period of machining, as determined ‘by
the timing mechanism, the collet is automatically
2. In a machine tool, the combination of a
magazine for supporting a plurality of articles 25
and successively actuable to feed said articles to
a working position and to convey said articles
withdrawn from the end of the work piece. thus
away from said working position, chucking
'releasingthelatterfromthetailstock "Land mechanism located at said working. position and
30 permittingittoheconvcyedawaytothedis
adapted to‘ support an article in cooperative rela-_
chargepositlonbythemagasine; Itwilibeun-' tion to a tool, means for e?ecting a bodily move
ment of said magazine in conveying an article
manually or automa?caily'with'drawn from the
away from said working pomtion, and means 'op
erating in timed relation and prior to said bod?y
moving means for actuating said chucking
mechanism to release an article.
A further feature of the present invention is
3. In a grinding machine, the combination of
the provision of a dressing fixture for the abrasive i a magazine for supporting a plurality of articles,
'wheeLwhichmayeItherDecarriedbythemain ‘means for successively actuating said magazine
machine frame, or selectiveb secured to it, irf ac
to feed said articles to and away from a working
,. curatelyadiustablespacedrelatlontothevalve
supporting collet ‘I, so that, at the completion
- of a desired value.
Referring particularly to
Flgure'15, a conventimal diamonddresing tool
position, chucking mechanism disposed at said
working position and adapted to support said
articles in cooperative relation to a grinding
wheel, means for eiiecting a bodily movement of
said magazine relative to said chucking mecha
nism in eonveying'said articles away from work
ing positionrand means operable prior and in
timed relation to said bodily movement means
for actuating said chucking mechanism to re--'
magazine for supporting articles; means for
andlhnitsmovementoffixturelllinonedirecé tosuecessikvelyfeedarticlestoandawayfrmna
the‘frame portion 'll,andmay_bemovedtl?he
illustrated position, in which itlocks the ?xture
I“ in the dressing'position. During normal
working position; chucking mechanism posi
articles away from working position; and means
movement means for actuating said chuckim
a correspondingly accurate spacing is provided
magasineforsupportingarticles, comprisingan
endiesseonveyor element; meansiorreciprocat
ing andindezingaaidmasasine to successively
betweenthecolletllandtbeabrasivewhed HI. feedarticlestoandawayfmmaworking'poai
Aswilibeunderstood,ahrasivewheel llimaybe tion; chuekingmechanimlocatedatsaidwork
graduallyfedmtothedressingtool ?lbyre 'lngpodtionandadaptcdtosupportanarticlehi
leasingthelockingswdmtherqor Cl'igureu), cooperaiiverelatiimtoatoiandmeammer
andslidingthesupportingstanrhrdmwithin lblein?nledltla?mtoandpdottosaldm
sinemovingmeans for actuatingsaid chucking
Itwillbeevidentfruntheforegoingthatthe mechanismtoreleaseanarticle.
75 present invention provides a highly eiiiclent and
6.111 a. machine tool, the comlination of a 75,
magazine for supporting a plurality of articles
vcle carrying member, spaced rotary members for
carrying said endless member, means for moving
said magazine bodily, and means responsive to
said bodily movement for rotating said rotary
members to advance said magazine.
12. In a machine tool, a magazine for carrying
and. successively feeding articles to a working
position comprising in combination an endless
article carrying member, spaced rotary mem-~
cooperative relation to a tool; and means oper- . bers for carrying said endless member, means for 10'
10 able in timed relation to and prior to said maga 'moving said magazine bodily, and pawl and
zine control means for actuating said chucking ratchet mechanism including an element carried
mechanism to disengage an article.
by one of said rotary members for rotating said
7. In a machine tool, the combination of a mag.
rotary members in response to said bodily move
azine for supporting a plurality of articles, com
prising an endless conveyor element trained over
13. In a machine tool, the combination \of a
spaced rotary elements; magazine moving means feed magazine for feeding articles successively to
for periodically reciprocating said magazine and a working position; chucking mechanism at said
comprising an endless conveyor element trained
over spaced rotary elements; means for bodily
moving said magazine and for indexing said ro-,
tary elements to successively feed articles to and
away from a working position; chucking mecha
nism located at said working position and
adapted to engage an article and support it in
for indexing said rotary elements to successive
ly feed articles to and away from working posi
working ‘position for receiving said articles, and
means for actuating said magazine and chucking 20
20 tion; chucking mechanism located at said work- _ mechanism in timed relation comprising a mag
ing position and effective to engage an article
and support and rotate it in'cooperative rela
azine actuating cam, a chucking cam, a. source of_
tion to a tool; and means operable in timed re- v
_ lation and prior to said magazine control means
necting said cams to said source of power.
14. In a machine tool, the combination of a feed
power, and‘ periodically operable means for con-'
for rendering said chucking mechanism ineffec
magazine for feeding articles, successively to a
working position; chucking mechanism vat said
8. In a machine tool, the combination of a ' working position for receiving said articles, and
magazine for supporting a plurality of articles;
means for moving said magazine to successively
feed articles to and away from a working posi-.
tion; chucking mechanism at saidworking posi-'
tion; a bearing located at said working position
and adapted to cooperate with said chucking
means for actuating said magazine and chucking
mechanism in timed relation including an end 30
less timing element of adjustable vlength and
means for driving said element.
15. In a machine tool, the combination of a
movement between saidv magazine and saidbear
feed magazine for feeding articles successively to,
a working position; chucking mechanism at said 35
working position for receiving said articles, and
means for actuating said magazine and chucking
ing to remove said hearing from the path of
mechanism in timed relation including an end»
mechanism to support an article in working posi
tion; and means for effecting relative bodily
' movement of said articles.
:9. In a machine tool, the combination of a
magazine for supporting a plurality of articles
and for successively feeding said articles to [and
away from a working position; chucking mecha
nism at said working position; a bearing located
at said working position and adapted to cooper- ‘
ate with said chucking mechanism to provide
support for said articles thereat, and-means for
e?ecting relative bodily movement between said
magazine and said support-to remove said sup
port from the feed path of said articles.
less timing element, a, dog carried by said timing
element, and clutch mechanism actuable by said 40
16. In a machine tool having a feed‘ magazine
and means for periodically advancing said maga
zine, the combination in said magazine of a plu
' rality of clips secured thereto in spaced relation-1
for supporting articles, and means controlled in_
accordance with said magazine advance tor forci
bly ejecting articles from said clips.
17. In a machine tool having a feed magazine
and means for periodically advancing said maga
10. In a machine tool, a magazine for carry- _ zine, the combination in said magazine of a plu
ing and successively feeding articles to a work
'ing position comprising in combination an end
less article carrying member, spaced rotary mem
bers for carrying said endless member, and means
for actuating said magazine to feed said articles
comprising means for moving'said magazine bod
ily and for rotating said rotary members.
11. In a machine tool, a magazine for carrying
and successively feeding articles to a working po
60 sition comprising in combination an endless arti
rality of article supporting clips secured there
to in spaced relation, each of said clips compris-v
ing a relatively rigid ?nger, and-a spring element
positioned to engage an article and urge it against 55
said ?nger, and means disposed in the path of
advance of said magazine for forcibly ejecting
I articles from‘ said clips.
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