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Патент USA US2404424

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July 23, 1946;
I
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J. BALLA, SR
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2,404,424
MACHINE FOR COILING METAL STOCK
v Filed July 6, 1944
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8 Sheets-Sheet 1
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46L
6mm
July 23, 1946.
J. BALLA, SR
2,404,424 .
MACHINE FOR COILING ‘METAL STOCK
Filed July 6, 1944
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8' Shee'ts-Sheet 2
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7
July 23, 1945.
J. BALLA, SR
2,404,424
MACHINE FOR COILING METAL STOCK -
Filed July 6, 1944
8 Sheets-Sheet 3
/74
@443” _ -
July 23, 1946.
J. BALLA, SR
7
MACHINE FOR COILING METAL STOCK
‘ ' Filed July 6,
JW
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2,404,424
1944
8 Sheets-Sheet 4 .
July 23,1946.
'
J, B'ALLA, SR
.
-
2,404,424
I
‘ MACHINE FOR COILING METAL STOCK
Filed July 6, 1944
8 Sheets-Sheet 5
22
dbl”? awash;
July 23; 1946.
J. BALLA, SR
2,404,424
MACHINE FOR COILING METAL STOCK
Filed July 6, 1944v ‘
'22
a Sheets-Sheet 7
July 23, 1946- '
‘A
-
‘
J. BALLA, sR ~
‘MACHINE FOR COILING' METAL STOCK
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2,404,424
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‘
Filed July 6, 1944
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Patented July 23, 1946
‘ 2,404,424
UNITED STATES PATENT
.
2,404,424
OFFICE
I
_ MACHINE FOR COILING METAL STOCK
John Balla, Sr., Schenectady, N. Y.
Application July 6, 1944, Serial No. 543,694
15 Claims.
(Cl. 153-64)
1
2
This invention pertains to a machine for coil
ing metal stock, and more particularly and spe
ci?cally to a machine for manufacturing coil
springs and spring lock washers.
The primary object of the invention is the pro
Fig.‘ 10 is a vertical sectional view on the line
llJ-l0 of Fig. 2 looking in the direction indi
cated by arrows.
Fig. 11 is a detail perspective view of an ele
ment of the clamp D.
Fig. 12 is a front view of the metal stock guide.
Fig. 13 is a front view of the stock guide with
vision of such a machine in which the forming
of the spring or look washer and the severance of
the stock on the completion of the formation of
the spring or washer is continuous and uninter
rupted enabling the machine to have great ca
pacity with a resultant decrease in cost of pro
duction.
the front plate thereof removed.
=
Fig. 14 is a detail vertical sectional view through
the cam throw adjuster.
Fig. 15 is a horizontal sectional view on the
line l5—|5 of Fig. 14 looking in the direction in
'
A further object of the invention is the pro
vision of such a machine wherein the adjustments
dicated by arrows.
'
,
Fig. 16 is a fragmentary detail vertical sec
or changes incident to enabling the machine to
tional view on the line l6--I6 of Fig. 1 looking in
the direction indicated by arrows.
make springs or lock washers as desired is ex
tremely simple and rapid of accomplishment.
Fig. 17 is a horizontal section taken on the
Another object of the invention is that of ‘pro
line l'l-l'! of Fig. 16 looking in the direction
viding a machine which by easily and rapidly ob
indicated by arrows. I
i
tainable reversal of the parts enables the ma 20
Fig. 18 is a vertical sectional view on the line
chine to make either right or left coiled springs
Ill-I8 of Fig. 5 looking in the direction indicated
or lock washers.
by arrows.
A still further object is the provision of a ma
Fig. 19 is a detail view similar to Fig. 2 illus
chine which is capable of producing springs or
trating the use of ‘a plurality of cutter blades
lock washers of varying diameters and to work 25 as utilized in the manufacture of lock washers.
metal stock of different cross sectional dimen
Fig. 20 is a sectional view on the line 20—20 of
sions.
.
Fig. 19 looking in the direction indicated by ar
Other objects, novel features of construction
rows.
and improved results of the machine will appear
~Fig.-2ll isva detail fragmentary vertical sec
from the following description when read in the 30 tional view illustrating the formation of a lock
light of the accompanying drawings.
washer.
In the drawings:
.
.
Fig. 22 is a fragmentary detail view partly in
Fig. 1 is a side elevation of a machine embody
vertical, section illustrating a modi?ed form of
ing the invention.
construction suitable for the manufacture of coil
Fig. 2 is an end view of the. front or product
delivery end of the machine.
'
springs.
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~
. Fig. 23 is a vertical sectional view similar to
Fig. 3 is a vertical sectional view on the line
Fig. 8 illustrating the construction of stock guide
for stock used in the manufacture of lock wash
3—3 of Fig. 1 looking in the direction indicated
by arrows.
Fig. 4 is a vertical sectional view onthe line
ers.
,
Fig. 24 is a front view of a lock washer as pro-,
4—4 of Fig. 1 looking in the direction indicated
duced by the machine.
by arrows.
Fig. 5 is a longitudinal vertical sectional view.
Fig. 6 is a vertical sectionalview on the line
6-6 of Fig. 2 looking in the direction indicated '
by arrows.
Fig. 7 is a vertical sectional view on the line
duced by the machine.
Fig. 27 is a top .plan view of the machine ape,
pearing in Fig. 1 of the drawings.
Fig. 28 is a side view of the standard adjacent
'l-—'! of Fig. 2 looking in the direction indicated
the front, end of the machine.
by arrows.
1
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Fig. 29 is a side view of the standard at the
.
Fig. 8 is a vertical sectional view on the line
rear end of the machine.
8—8 of Fig. 2 looking in the direction indicated
‘
Fig. 30 is 'a side view of the standard inter-,
mediate the ends of the machine.
by'arrows.
Fig. 9 is a vertical sectional view on the line
Fig. 31 is a side view of a bearing block for
9—.9 of Fig. 2 looking in the direction indicated
‘by arrows. '
Fig. 25 is an edge view of the same look washer.
vFig. 26 is a side view of'a coil spring as pro-1
the
55
.countershaft.
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i
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Referring now’ to the drawings andusing like
2,404,424.
3
letters and reference numerals to designate simi
lar parts throughout the description, I is a suitae
ble base, upon the upper face of which are verti
cal standards 2, 3 and 4 at the front and rear
and intermediate the length of the machine re
spectively. The speci?c construction of these
standards appears in Figs. 28, 29 and 30 of the
drawings.
4
block and the bottom or vertical shoulder 30'
of the seat, the shims being for a purpose. which
will hereinafter appear.
The standard 2 is provided with the afore
mentioned opening H for the passage of the
shaft is and with openings 3| and 32 (see Figure
28). The opening 3| is for the passage of the
shaft 2| while the opening 32 is for the passage
of the ‘shaft 33 which carries the aforementioned
The main drive shaft 5 is ‘suitably rotatably‘
supported in the standards 3 and 4' and suitably 10 idler roll 527i. rThe inner end of the shaft 33
is rotatably supported in the bearing 34. The
connected to any chosen form of power means,
bearing support for the shaft 33 is such that this
not shown, which should be of the type to rotate
the shaft 5 in either‘ direction as the direction of
rotation for the drive shaft is reversed as the ma
chine is changed from the production of left hand,
coils to right hand coils, as will hereinafter more
fully appear.
shaft is longitudinally reciprocable.
The main drive shaft 5 is provided with gears
35 and St. A counter shaft 37 is rotatably sup
ported on the standards 3 and 4. At its inner
end it carries a gear 38 meshing with an inter
mediate gear 39 on stub shaft 49 and provides
driving connection with the gear 36 for trans
mitting rotary motion to the shaft 3?. Theshaft
3‘? is provided with a "second gear 43. meshing
with a gear 41 carried ‘by the stock feeding roller
shaft 5. This provides rotary drive for the feed
roller ‘i. A third gear 42 on the counter shaft 31
meshes with a gear 43 carried Tby the shaft 2| and
provides rotary motion to said shaft.
More ‘detailed description of ‘this construction will
A cam C‘ carried by a shaft 44 rotatably
hereinafter appear.
mounted in bearing carrying standards 45 and
A' mandrel carrying rotating shaft 10 is ro
45 is provided for the purpose of imparting re
tatably supported in the standards 2 and 4. The
shaft is supported to permit limited vertical 30 ciprocation to the shaft S3 in 'a'manner which will
A feed roller shaft 6 is rotatably supported in .
the front and rear standards 2 and 3 respective
ly and beyond the front face of the standard 2
is “provided with a stock feed roller .1 having in
its face a marginally disposed, peripheral, annu
lar groove 8 of the proper dimensions and trans
verse con?guration to engage the circular stock
ll of which the coil spring‘A is to be formed.
movement which is accommodated by makingv the
opening ii in the standard '2 of slightly greater
diameter than that of the shaft and by provid
ing a universal type bearing 12 in the standard 4.
The bearing l2 permits of a limited universal
later appear. The cam shaft 44 carries a gear 47
meshing with a gear 48 on stub shaft 49 provided
with a second gear 58 which meshes with the gear
‘5| carried adjacent the inner end of the shaft
movement of the shaft Hi. For‘ a vconsiderable
portion of its length the shaft is hollow as ‘indi
cam C and shaft I0. ~
cateda't i3 and telescopically receives the shaft
portion 54! of the mandrel 15. The mandrel is
positioned below the stock feed ‘roller’ 1.
To 'permit‘inserti‘on and ‘removal of 'the man
drel and the substitution, of ,mandrels of different
sizes the innermost end of ‘the 'r‘nan'drelshaf't H3
is ‘cut away ‘and'flatte'ne‘d as at It. (‘The mandrel
shaft is held against rotation and ‘against longi
tudinal movement ‘within the shaft in by a clamp,
the speci?c construction of which appears in
Figs. 5 and 18 of the drawings, from which "it
will be seen that there is a ?at plate I1 “which is
‘forced in tight clamped engagement ‘with the ?at
~ surface if; by a plurality of set screws [8.
This
clamp is made as a unit by providing a spring
band l9, the set screws being threaded ‘in ‘the '
thickened ‘portion '26 ‘of the'shaft l0. '
A shaft 2i is disposed at a slight angle to'the
horizontal and is ‘suitably ‘rotatably supported in
the ‘standardsf and '4 and carries on its “outer
wface a ‘forming roll ‘22 and a stock cutter desig
nated as an entirety at B, the speci?c construc
tion of which'will be hereinafter'given. The ‘sup
port for the outer end of the 'shaft 2| is in the
‘formjof a'iblock. carried bea'ring‘ZS, which block
is suitably secured in the inclined seat 24 of the
standard 2. This block at its lower end is pro
7 vided with‘a plurality of shims 125 insertable and
removable between the lower end of the block
"and the bottom wall or shoulder 26 of the block
seat 25 for a purpose which‘ will ‘hereinafter
appear.
.
'
is. This construction imparts rotation ‘to the
I The connection between the cam C and ‘the
idler rloll shaft 33 will now be described. A stand
ard 5? .is secured by bolts 53 to the base ‘I (see
Figures 3, 14, 1'5 and 27). A swing arm 54
pivota'lly secured to the upper end of the standard
and has an end 55 positioned above a camway 56
in the cam. The end 55 of the arm is cut away
as at 51. and in its bottom is provided with a
longitudinal slot 58 for the passage of the upper
end ‘of a stub shaft 59 carrying a roller 59 dis
posed in the camway 56. A nut 5| is disposed
‘within the cut out portion 51 of the arm and 'pro
vides means for adjus'tably securing the stub
shaft 59 in‘ adjusted position in the slotted .por
tion 58 of the arm. The arm end 55 is provided
‘with a ?tting 62 in its side cooperating with the
ball end 63 of a threaded bolt ‘64 thus providing
an universal connection. A similar thread'edbolt
'65 is provided and the adjacent ‘threaded ends
of the. bolts $4 and “55 carry a turn~buckle ‘66.
The b01tj5j5 has universal connection ‘as'at 6'! with
the end '68 of an arm 69 the opposite end ll] of
which has operative connection with the shaft 33
for reciprocating said shaft when the mechanism
is ‘actuated ‘by the cam. The mechanism just de
scribed provides all the adjustments necessary to
‘impart varying degrees of ‘longitudinal movement
‘to the shaft933 in response'to the movement of
the'cam roller 66 in the camway :56.
The feed roller 1 must be caused to force ‘the
‘metal stock or wire 1i against the mandrel with
sufficient force to pull the stock through the
‘machine. This means that the feed roller 'must
(Anidler roll 2? is carried in a block bearing 28 70 be vertically movable and adjustable. The stand
ard '2 ‘upon its top is provided with spaced ‘verti
which is of substantially, the same construction
as the block '23‘. ,This block is suitably secured
in the seat-2'9 of ‘the standard '2 and at its’ lower
end is provided with shims 35 which are insert
able and removable between the lower end ‘of the 75
cally extending webs 12 and 13 which form a
window 115 vhaving vertical guideways 15 (see Fig
ure '28) ‘in which is slidably mounted a bearing
block 16 for the front end of the feed roller" shaft
2,404,424
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"6
6. ‘A coil spring 11 tends normally tohold this
block in an elevated position _(see Figure 5). The
its outer end to retain the assembly of the roller,
upper end of the window 14' is closed by a cross
head 18 in which is mounted a threaded sleeve 19
provided at the top and bottom sides of the cross
head with nuts 80 and 8|. A cam shaft 82 pro
pivotally supported to a suitable standard ||l|
(which may be either the front standard 2 of the
machine or a separate and specially provided
standard, as desired) by a pivot bolt I92 and is
vided with an actuating handle 83 is rotatable
within the sleeve and at its lower end below the
shaft and tube members together. This yoke is
‘ provided with a handle I03. The aforementioned
roller 94 is carried by the bolt I92 and is disposed
nut 8| is provided with a cam 84 (see Figure 2).
in the space between the standard NH and the
A cam 85 is opposed to the cam 84 being suitably 10 yoke. The slots 91 permit vertical movement of
secured to the upper face or edge of the bearing
the roller 95. Set screws I94 limit the upward
block 16. Once the proper setting of the feed ‘
movement of the roller 95 and provide means af
roller 1 is determined the nut 8| is properly posi
fording adjustment of this roller for operation
tioned‘so that when the cam shaft 82 and its cam ‘ upon stock of varying dimensions.
84 are rotated into the position illustrated in 15 .. Having reference to Fig. 2 of the drawings it
Fig. 2 of the drawings the metal stock or wire 1|
is engaged between the feed roller and the man
drel under the proper force necessary to progress
the stock through the machine.
will be understood that after the stock 1| is posi
tioned as illustrated movement of the depending
handle I03 to the left will swing the roller carry- '
'
ing yoke forward and downward and carrying
By reason of the shaft 6 having the vertical 20 the roller 95 in a circular path will bend the lead
movement described the rear end of the shaft is
end 93 of the stock into the semi-circular shape
rotatably supported in the standard 3 by a bearing
illustrated in dotted lines and designated at 939.
86 which permits of a limited universal move
It is, of course, understood that, during this stock
ment.
bending operation, the aforesaid clamp D is tight
So that the feed roller’ 1 may at all times be 25 ened to hold the stock from endwise movement.
properly positioned in respect to the mandrel |5
Speci?cally, the clamp D comprises a block hav
irrespective of the diameter or cross sectional
ing therein a vertical extending passageway I15,
configuration of. the stock being operated upon
the opposite faces of which are curved. A wire
provision is made for longitudinal axial movement
gripper H1 is positioned in said block passage
and adjustment of the shaft 6. It is to be under
way and is normally urged into the position,
stood that when circular stock, such as that used
for springs, of a greater diameter is used, an
other roller 1 having the proper sized groove 8
will be substituted, likewise this applies to the
illustrated in Figures 2 and 19, by a coil spring "
I718. When the gripper is in this position, a jawed
opening I19 therein grips the Wire and holds it
against longitudinal movement.
Movement of
forming roller 22. When stock of rectangular 35 the gripper ‘I11 to a vertical position by pressure
shape in cross section is being worked a plain or
upon its upper end will permit insertion and re
?at faced feed roller is substituted, as will appear
moval of the wire.
from the later description of the manufacture of
A guide designated as an entirety by F is pro
lock washers. To provide for longitudinal move
vided for assuring proper alignment of the stock
ment of the shaft 8 a threaded stud 81 extends 40 with the feed roll 1. Having reference speci?cal
rearwardly from the bearing block 16 and is pro
ly to Figs. 6 to 8 inclusive and 12 and 13, it will
vided with a yoke block 88. This block is freely
be seen that there is a pair of opposed plates I05
slidable on the stud 81 and is held in adjusted
and H16 which are of a U shape in cross sectional
position by nuts 89 and 90. The yoke portion 9|
con?guration to form a rectangularly tubular
of the yoke block 88 engages a collar 92 provided 45 housing within which is disposed a pair of guide
on‘ the shaft 6. Loosening of the nut 90 and
blocks I01, I88 which have cut-out longitudinally
tightening of the nut 89 will move the shaft 6
grooved portions in their abutting faces, as atv
and the feed ‘roller 1 to the right as these parts
W111, and registering with each other to provide
are viewed in Fig. 5 of the drawings. _ Movement
an opening of the proper con?guration and di
of the shaft and feed roller in the opposite direc 50 mensions to snugly receive the stock 1|. The
tion is attained by rotating the nuts 89 and 99 in
block I08 is secured in position by screws I99.
the opposite direction.
The rear or innermost plate I05 adjacent its ends
The shaft 6, of course, has its end portion
is provided with rounded protuberances I III which
mounted for longitudinal movement as well. as
are disposed withinsuitable rounded bottom de
for, rotation in the bearing 86. So, too, as shown, 55 pressions HI and “2 provided in a carrier plate
the gear 4| is made somewhat wider than the gear
40 with which it is in mesh so as to have ample
width of tooth engagement between the two gears
40 and 4| at all times.
;
stock receiving end of the guide is secured to the ‘
provided as a part of the machine. This mecha
secondbolt ||5 which passes through the verti
v| l3 (see Figure 13). The plate “3 adjacent the
standard 2 by a bolt “4 about which the plate
may be swung to raise or lower its delivery end.
To put the machine in operation the leading 60 This is for the purpose, of assuring correct align,
endrof the stock must be bent into a semi-circular
ment of the stock with the feed roll and mandrel.
form and a mechanism for accomplishing this 18
This plate is held in its adjusted position by a
nism appears in Figs. 2 and 19 of the drawings and
cally extending slot I I6 of the plate. The plate is
is speci?cally illustrated in Figs. 9 and 10 of the 65 provided with oppositely positioned ears H1 pro
drawings. ' D designates a clamp to prevent longi
vided with threaded openings .I I8 for the recep
tudinal axial movement of the stock 1| after the
tion of bolts us which pass through ears I20’
leading end 93 of the stock has been fed between
provided on the aforementioned rear guide block
the rollers 94 and 95 of the stock bender E. The
carrying plate I05. By tightening down and
bender comprises a yoke 96 the arms of which 70 loosening the bolts “9 the guide blocks can be
are provided with slots 91 (see Figure 10) in
adjusted by a partial lateral swinging or sub
which are disposed a pair of tubes 98 and 99
stantially, a partial rotation thereof to properly
within one of which is threadedly secured a shaft '
align the stock in the event the stock is twisted
I08’ carrying intermediate its ends the aforemen
as is often the case as the stock does not always
tioned roller 95 and the shaft having a head at 76 come from the source of supply perfectly straight;
2,404,424 '
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‘(see Figures 1., 2 and 19) and as the stock is
fed to vthe mandrel and forced or formed ‘there
against by the roller '22 the stock hits this bev
eled edge I89 and the .position of the idler roll
21 will determine the pitch given to'th'e spring
rIEhe outer plate I06. (see Figures 8, 12, ‘and 23)
on?its bottom at points adjacent its. ends is pro-,
vided ‘with downwardly projecting tongues I2.I ‘
which extend through aperturedhorizontally ex
tending. lips I22 carriedby the bottom of. the
' convolutions, as clearly appears in Fig. 1 of the
inner plate I05. This construction forms a sup
drawings; From the description thus far given
port for the outer. plate I05, which plate is fur
ther held in the positionillustrated in Figs. 6
the operation of the machine in the formation vof
coil springs will be understandable and said de
and 8 by a pivotally mounted latch handle I23
which is normally held behind a latch v?nger I24 10 scription will describe structural features hereto
fore not mentioned. The construction of the coil
by the actionof a coil spring I25 (see Figures2,
spring A made by the machine appears in Fig. 26
19 and 27); This latch ,?nger is mountedupon
of the ‘drawings wherein it will be seen that there
and extends forwardly of the top of therearplate
are a plurality of spring convolutions which are
I65. With the .latch handle I23 in locked posi
spiral in nature, that is the spring is given a pitch
tion the parts are in. the position illustrated in
so that these convolutions are what ‘are commonly
full line .in Figs. 6 and, 7. Upon swinging the
termed, open convolutes. At each end however
latc-hhandle I23 about its pivot I26 to disengage
the spring coils or convolutes are nested as indi
itlfrom its holding ?nger I24 the outer plate can
cated at M I. That is, two convolutes are in abut:
beqsw-ung downras illustrated in dotted line in
ment with one another. The spring is made from
Fig. 6 of the drawings. This makes it possible
circular stock.
.
to insert the stock ‘VII and also. to insert substi
The leading end 93 of the stock is bent in the
tute guide blocks when stockvof different dimen
stock bender E in the manner illustrated in the
sions -or,cross sectional’ con?guration is to be
lower left hand corner of Figs. 2 and 19 of the
At this point attention is directed to Fig.23 25 drawings. The latch handle I23 is then operated
and the parts of the guide swung into the position
(tithe-drawings which illustrates guide. blocks
illustrated in dotted lines in Fig. 6 of the draw
such as are used when the machine is operated
ings. The stock is then inserted into the op
to manufacture lock washers. In this instance
worked.
.
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the stock I2?! is substantially rectangular in cross . posed grooves formed in the opposing faces of the
sectional con?guration and guide blocks I28 and 30 guide blocks I6? and lilauhile. the curved lead
ing end 93% of the stock is placed about the man-_
drel. Before the stock is placed about the man
drel the mandrel is in a lowered position, beingat
-I2-9y;have been substituted for the guide blocks
Hi1 and “18 which were used for the circular stock
1! ‘out of which the coil springs are manufactured.
Description will now be given of the cutter B.
This apparatus, see particularly Fig. 20 of the
this time supported by the bearing opening II in
The mandrel has dropped
down to this supporting position and is not in
contact withthe feed roller ‘I. It is to accommo
date this dropping movement of the mandrel that
the mandrel drive shaft It is provided with the
universal bearing I2 ‘and the opening II in the
“ the front standard 2.
drawings, is closely associated with the forming
roll 22 and like said roll is carried on the shaft
21. r The deViCe‘ comprises a circular plate I 30
which has'an'inner face I3I in opposedrelation
ship to the outer face I32 of the roll 22. The
said outer- face of the roll 22 at a plurality of
standard 2 is made larger than the shaft.
.
With the curved end of the stock in position
overrthe mandrel the mandrel is lifted into the
slots I33 within which are reciprocably mounted
position illustrated in Fig. 2 of the drawings with
cutter ?ngersIM with cutting blades I35 which.
are at the outermost ends of the ?ngers. ' The .' the stock being engaged‘ by the groove 8 of the
feed roller ‘land by the face of the roller 22.
inner face I31 of the plate IE9 is provided with a
It is to be understood that when the stock is being
' spiral groove l35, see Figs. 19 and 20, for the re
put intothe machine the cam 84 is operatedby
ception of lugs l3l carried adjacent the inboard
its handle 83 to the reverse position illustrated
ends I38 of the cutter ?ngers. It will be obvious
in Fig. 2 of the drawings. When the stock is in
that rotation of the plate I39 will cause the cut
place about the mandrel the cam is operated to
ting ?ngers I-34 to be projected or retracted in
the position illustrated in Fig. 2 of the drawings
accordance with the direction of rotation of the
which causes the stock to be tightly clamped
plate. The cutting edges I35 of the ?ngers cut
against the mandrel and will cause the'stock to be
throughv the stock. ‘II while the same is on the
continuously pulled into the machine when power
mandrel as clearly appears in Figs. 2 and 19 of
is applied to the power shaft '5, with the mandrel
the drawings. The ?ngers areof a length and ad
I5 and forming roller 22 aiding in feeding of the
justed so as to’ extend suf?ciently far to com
stock into the machine and onto the mandrel
pletely sever the stock. Once the cutters are
points throughout its perimeter is provided with
properly adjusted the plate I30 is tightened down
thereof.
by the nut I 38 which not only holds the plate
against rotation independently of the shaft 2|
but simultaneously tightly clamps the ?ngers I34
against the front or outer face I32 of the roll .22.
it has been found desirable to provide means for
rotating the parts manually and to this end there
is provided a shaft I42 (see Figures 1. 3, 4 and 5)
When the machine is being used in the manu
facture of coil springs only a single cutting ?nger
(see Figure 2.) is mounted in the cutter while ?ve
cutting. fingers are mounted in the cutter when
the machine is utilized to manufacture lock wash
ers (see Figure 19) , as will more clearly appear
in the following description of the mode of opere _.
ation of themachine.
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It has been mentionedv that-the idler roll 21
is movable longitudinally of the machine which
movement is-eifected by the cam C. This roll 21
hes-its .outerre?eheml edgelbeveled as at I49 ->
During the starting operation of the machine
provided with a hand wheel or similar means,
not shown, by which it may be manually rotated.’
This shaft is provided with a gear I 43 meshing
with the main drive shaft carried gear 35.
.
Upon the power being delivered to the main
drive shaft 5 the‘ feed roller ‘I, or upon operation
of said hand operated shaft I42, the mandrel
I5, and the form roller 22 with its associated cut
ter mechanism are simultaneously rotated. - This
results in the stock being fed to the mandrel .
and being forced thereagainst and formedlthere
about by the form roller 223 ‘The pitch ofv the
32,404,424
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spring convolutes is in accord with the setting of
the idler roll 21.
trat'es the machine in“ operation for lock washer
>
At the same time the aforementioned parts
are being rotated so likewise is the cam C being
manufacture, itwill be’ seen ‘that the cutter as
sembly B carries ?ve cutting ?ngers I34. r The
result of this arrangement is that the stock will
rotated by the main power means.
i be severed each time it has been completely coiled
The drivev -
ratio for the cam and the high spots I44 of the
once about the mandrel I5. In other words, only
one convolution of the stock is made prior .to the
cam are such that the idler roll 21 remains in a
set position with the roller 60 riding for a con
severance thereof.‘
siderable time in the major straight concentric
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There is no need for the nesting operation as
was the case with coil springs. Consequently
drive connection between the cam C and the
portion of the camway 56 to give the desired
number of convolutions prior to causing the nest
ing operation. -When however the cam has re
idler roll 21 is broken so that the roll 2'! remains "
in a ?xed position so as toigi've each‘ convolution
volved to a point so that the cam roller 6!! rides
up on the high spots I44 of the cam the idler
of the stock the same pitch.
,
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roll is retracted through movement of the arm 54 v15 .. A modi?ed form of the machine as his utilized
by reason of its connection with the yoke arm
for manufacturing springs is illustratedin Fig. 22
69, as has been explained. This retraction of the
of the drawings. The "entire modi?cation resides
idler roll 21 causes nesting of the spring end por
in the idler roll construction. ' In this instance
tions-for the reasons explained and the mecha;
the idler roll appears at I41 and it is not longi
nism has been timed and adjusted so that" the 20 tudinally movable. The roll is adjustable to any
cutter ?nger I34 engages the stock in the man
desired ?xed position within reasonable ‘limits
ner illustrated in Figs. 2 and 19 and severs the
by reason of the adjusting'nut I48 which abuts
the inner end of the roll shaft I49. The roll
The speed of rotation of the cam C plus the
shaft is provided with a bore within which is
length of the high spots of the cam are such that 25 slidably mounted a shaft I50 carrying on its outen
stock.
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,
after severance of the stock occurs nesting is con
end a disc I5I which engages the stock ‘H and de
tinued to give a leading nested ‘end to the stock
termines the pitch of the spring convolutions.
in the spring. Immediately thereafter the cam
This shaft at its inner end is provided with a
causes the idler roll 2‘! tomove outwardly to its
collar I52 to which is connected the yoke end ‘III
original position. Thus one cycle of the machine 31 of the arm 69 which is an element in the connec
has been completed and thereafter the cycle is
tion to the cam C."
Y'
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repeated inde?nitely as long as the machine is
It will be obvious‘ that this construction oper
maintained in operation and stock is being fed
ates to accomplish the same result as that’de
therethrough.
scribed in respect'to the preferred form of the in
Each spring formed by the machine will be of 5 vention in that the cam will move the disc I5I
the construction shown in Fig; 26 of the draw
in and out by sliding the ‘shaft I50 of the disc
ings and will have nested convolutes at each of
within the bore of the idler roller shaft. The idler
its ends.
.,
.
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roller’ I 41. will serve to support the mandrel just
as does the idler roll 21' of the preferred'form of
,
The machine has the decided advantage that
the feed of stock will be automatically stopped
should the stock break as it is being bentor
formed about the: mandrel.
the invention.
Obviously the machine is not limited to the
7 ,the stock ‘
Should
break there would be nothing to ‘cause the lead
manufacture of springs or washers of any single
: _ diameter dimension. ‘ When it is desired to change
ing end of the incoming stock to follow the circu
lar contour of the mandrel. The stock on the
mandrel in front of the break will be discharged
very quickly from the mandrel and thereupon
the mandrel will drop down moving away from
the stock above it which lies under the feed roll
the diameter of the product vthe mandrel‘ is
changed and description has already been given
of .the manner inwhich the mandrels are se
1. Immediately this happens" the feed roll 1 loses
its ability to pull additional stock into the ma- .
chine.
When this occurs it is necessary to re
chanics and others skilled in this art.
The machine illustrated and described is for
the production of what .I have termed left hand
start the machine by re-threading the stock in
the manner heretofore described wherein it has
been pointed out that the leading end of the stock
must ?rst be bent into the form illustrated at
93?1 in Figs. 2 and 19 of the drawings.
springs and washers‘ but were it desired to make
right handproducts a certain reversal‘ of parts
would be necessaryand provision has been made)
The operation in the manufacture of lock
for this, as will now be described.
washers is identical to that described in respect
to the manufacture of coil springs, with the fol
lowing exceptions.
;
~
As has been mentioned, the power means is
given a reverse directionof rotation when the
machine is to make right hand products. The
‘
The lock washers made by the machine are of
the construction illustrated in Figs. 24 and 25 of
the drawings from which it will be seen that the
stock I21 of which they are composed is substan
tially rectangular in cross sectional con?gura
tion, as has been before pointed out in the‘spe
cured in and removable from themandrel driv
ing shaft Ill. As the dimension of the product
is increased or decreased a change in the diam
eter of the feed roll and the forming roll-22 will
.be required, as will be well understood by me
countershaft 31 and its gears are shifted to the
Iii)
opposite side of the machine. To permit this
the intermediate standard 4 is provided with bear
ing block seats similar to those described in re
spect to the front standard 2 which is speci?cally
illustrated in Fig.28 of the drawings. Having
ci?c description of r the stock guide appearing in
reference now to Fig. 30 it will be seen that'the
Fig. 23 of the drawings.
H
standard 4 has oppositely arranged bearing block
By reference to Fig. 21 ‘of the drawings it will 70 seats I80 and I6I which are'adapted to receive
be seenthat the feed roller 1 has been replaced
the bearing carrying block I62 in the bearing of
by a suitable feed roller I45 which has a plain or
‘which is vrotatably supported the inboard end of
?at surface so as to properly engage the ?at top
the countershaft 31 (see Figures 1, 27 and 31)‘.
I46 of the rectangular stock I21.
‘
. Having reference now to Fig. (19 which illus
75
The outboard end of this shaft is mounted on a
bearing carrying p1ateIB3 which is secured by a
122,404,424
.
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"ll,
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,
‘mg driving connection with said main power
shaft, said stock feeding roll being above said
bolt H4 in a Suitable recess‘ I65 provided inthe
rear standard 3. This standard has an oppositely
mandrel and said forming and idler rolls being at
opposite sides of said'mandrel and in axial planes
below the axial planes of said stock feeding roll
and said mandrel, means associated with said
positioned seat I66 to receive the bearing plate
"lit-'3 when the countershaft is shifted to‘the oppo
site side of the machine (see. Figures 16 and 17).
Having reference now to the front end of the,
machine and to Fig. 28 of the drawings it will be
' formingvrol-l for periodically severing said stock
on said mandrel while the mandrel is being ro
7 seen that the positions of the forming roll: 22 and
tated and while the stock is being coiled there
about, means for forcing the outer end of the.
feed roller shaft and, the feed roller downwardly
under a selected amount of pressure, and means
idl'er’roll 21 maybe reversed. The bearing block
seats 24' and 29 of the standard 2 are designed to
interchangeably receive the bearing carrying
blocks 28 of the rolls '22 and 21 respectively.’ As
the stock will be fed from the opposite side of
‘ adjust/ably positionable
longitudinally
of
the .
mandrel and engaging the side of the stock there
the machine the stock guide‘ F must be moved to
the opposite side of themachine. Accordingly 15 on and causing the stock to be coiled in opened 7
spirals of predetermined pitch.
the end ‘standard 21 is provided with identical cp
2. A construction as de?ned in claim l'where
positely positioned bolt receiving. openings Hi1 for
in, the idler roll is adjustably movable longitudi
the’ reception ‘of the bolts: which secure thestock
1guide?‘ in place.-..
‘
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nally of the, mandrel and constitutes the means
The standard 2 is‘likewise provided with'two 20 which gives the stock a spiral winding of prede
termined pitch, a rotatable cam having therein
‘sets of bolt openings 1:68 which: are oppositely po
an endless cam face, drive means between said
sitioned so that; the 'stock' clamp and bende-riD and
cam and the main power drive shaft, means 013- "
5E may be shifted fromone. ‘side to the other side
eratively connecting the endless camway of said
of the machine.
' '
cam to said idler roll for moving‘ said. roll longi
'Movi'ng 'the'st'ock guide F' from the: leftto the
tudinally of the mandrel, and said camway and
vlright side of the machine‘ wilii. in. no way' interfere
said. operative connection operating to project
.with the proper operation ofi'this device as it is
and retract said idler roll after a predetermined
constructed so that stock‘ can be fed equally well
number of spiral convolutions, of said stock have
in either direction through‘ it. By reference to
~
Fig. 2 of the drawings it will be ‘seen that‘ at its 5 been wound about said mandrel.
3.
A.
construction
as
de?ned
in
claim
l
where-7
iinboard end this device is rounded as at I90 to
in, and describing. more speci?cally, that the
overhang the idler roll 21 androunded as at I91 to
means which is adjustably positionable longitudi
?t beneath the feed roll 1. The opposite end of
nally of the mandrel as comprising the idler roll
the guide is similarly shaped and Will properly fit
er and the same as having a marginal annular
between the feed roll 1 and the'id-ler roll 21 when
and peripheral formation which engages the side
said last named r‘oll‘is moved? to the opposite side
of the stock while it is being coiled on the man
of the machine.v
,
.
drel and further comprising a connection with
When the forming roller'22' and cutter assembly
the shaft of the idler roller for periodically re
1 B are moved to the opposite side of the machine
ciprocating said shaft to retract said idler roller
it is necessary to substitute a different cutter
from its coil opening position during the end
‘ assembly which will be of. similar construction and
. windingv formation of the coiled stock, holding
1 operationv to that described ‘and speci?cally illus
tra'ted inFig. 20 of the drawing's'with the excep- - 2
tion that the‘ cutter ?ngers will incline in the op
coil.
stock on the mandrel. The same spiral groove
1 arrangement I36 will be provided for projecting
In making the change from a right to a left
‘winding or‘ ‘coiling machine the connection be
50 termediate- standards are reversel-y arranged and
is moved to the opposite‘ side of the machine.
To make this possible the base i is provided at
3 both sides of the machine with openings F69 (see '
I claim:
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>
4. A construction as defined in claim 1 but de
scribing more speci?cally that said front and in
‘ tween the cam C and the idler‘ roller shaft 33‘
1 Figure 27) for the reception of the bolts 53v which
secure the standard 5.2 in position.’
the initial winding of a new cell of stock and re
turning said idler roller to its coil opening posi
tion duri-ngthe open spiral winding of the new
posite direction and the cuttingv edge of the?ngers
‘will be'rnade to properly engage and sever the
‘ and retracting‘ the cutter ?ngers.
said idler roller in its retracted position during
provided to perm-it the mounting thereon or the
forming roller and the idler roller and their car
rying shafts in reversely interchange-d positions,
with the stock feeding roller and its carrying
shaft in its one position, and said feeding roller
and its direction of feeding rotation of the stock
can be reversed by a reverse operation of‘ the
power shaft in its one position of mounting and
operation.
1. An apparatus for coiling metal stock com 60' 5. A machine for coiling metal stock comp-ris
1 prising, front, rear and intermediate standards,
ing, a driven rotatable circular mandrel, a driven
. a vpower shaft j‘ournal'ed' in the rear and inter- '
stock feeding roll above said mandrel and engag
‘ mediatestandards, a stock feed roller shaft ro
ing stock on said mandrel, a ‘driven rotatable
tatably mounted in said front and rear standards,
form roll at one side of said mandrel and en
the front end of said stock feed shaft being jour
gaging stock thereof, an idler roll at the opposite
. naled in a vertically movable} support and carry
side of said mandrel and engaging the side of
. i-ng a feed roll. a mandrel rotating shaft rotatably
stock on said mandrel to cause said stock tolbe
1 mounted
the front and intermediate standards
wound
about said'mandrel spirally and of a pre
1 and. being restrictedly vertically movable in the
determined pitch, a cutter associated and rotat
front standard, a mandrel detachably" connected
able with said forming roll, said cutter compris
‘ axially to said shaft, a’ forming roll shaft ‘rotat
ing a plate arranged in parallel spaced. relation
ably mounted in said front and intermediate
ship to the outer side face of said forming roll,
standards and‘ carrying a forming roll, an idler
a cutter blade mounted'in said space and pro
j rolli'sh'aftrotatably mounted on said front stand
vided with an extension element, said cutter plate
ard and carrying an'id-ler roll, all of said shafts
provided with a spiral groove for the reception
‘ with the exception of said idler roller‘ shaft hav
/ $404,424
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‘of said cutterblade extensiony‘element, and’ said
cutter plate being, rotatably adjustable to project
and retract said cutter blade, for the purpose de
scribed.
V
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v
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14.
der pressureagainst the mandrel’ tov clamp the
sameagainst rotative or longitudinal movement
within‘ the bore, whereby the mandrel is option
_
6; For use with a machine in which‘ metal stock
is coiled spirally about a mandrel, a stock feeding
and aligning devicecomprising, a pair of opposed
channeled plates, a guide block in each of, said
plates, said guide blocks having in their opposing
‘faces opposed grooves forming a passageway for
snugly receiving the stock, the outer of said plates
being quickly detachable‘ fromv ‘the inner plate
to provide‘ for the insertion of stock into the'pas
'sageway formed by ‘said blocks, said platesjbei-ng
ally clampedwithin the bore for‘rotationwith
the, shaft, or removable from the bore for -re
placement.
.
,
,7
I
11. An apparatus for coiling metal stock com
prising, a rotatable mandrel about which ‘said
stock is adapted, to be coiled, a rotatable'stock
feeding roll for engaging said stock’ against said
mandrel, va stock guide for delivering said stock
in proper alignment to said feed roll, a rotatable
stock forming roll at one side of said mandrel, a
common pow-er ‘drive for'said mandrel and said
rolls, an idler roll at one side of said‘ mandrel
pivotally. mounted for movement in a vertical
plane,- and said plates being further mounted to
oppositely positioned in respect to said forming
permit them to be adjustably rocked in a direc
roll, said idler roll being adjustable longitudinally
tion transverse the longitudinal axis of the plates.
of its axis and longitudinally of said mandrel
7. In combination with a'machine for coiling
and being formed marginally, annularly, and pe
metal stock for the manufacture of coil springs 20 ripherally, to engage the side of said stock, as it
and lock washers, means for initially bending the
is coiled about said mandrel, whereby to open the
end of the stock into a semi-circle comprising a
convolutions of the coiled stock at a‘ de?nitely
pair of rolls adapted to receive the stock be
predetermined pitch, rotatable means having
tween them, one of said rolls being‘ rotatable on
driving connection with said main power means
a ?xed shaft, the other of said rolls being mount 25 and acting to hold said idler roll in a de?inte coil
ed to be swung concentrically about the ?xed
pitching position during formation of the coiled
roll, means to swing said last named roll as de
stock and periodically retracting said roll from
scribed, and a clamp engaging said stock at a
its coil pitching position whereby to ?atly nest
point in front of said rolls to prevent movement
and eliminate pitch to the endmost convolution
of said stock as the end thereof is bent about 80 of the wound stock, and a cutter associated with
said ?xed roll.
‘
said forming roll and rotatable therewith, said
8. An apparatus for the purpose described,
cutter acting to sever said stock after a prede
comprising, a positively driven rotating mandrel
termined number of convolutions thereof have
about which metal stock is adapted to be wound,
been coiled about said mandrel.
'
a positively driven stock feeding roll above said 35
12. A construction as de?ned in claim 11 where
mandrel and adapted to engage said stock, a
in, a rotatable cam is provided and has drive
positively driven forming roll at one side of said
connection with the main power drive, said cam
mandrel for engaging said stock and coiling it
being provided with an endless camway, a swing
about said mandrel, an idler roll at the opposite
arm carrying therein a roller disposed in said
side of said mandrel and having a beveled an
camway, and an adjustable connection between
nular peripheral edge portion for ‘engaging said
said swing arm and said idler roll, whereby said
stock laterally thereof and causing it to be spi
idler roll is periodically retracted and projected
rally wound about said mandrel, said idler roll
a predetermined distance.
_
being adjustable longitudinally of its axis and of
13. An apparatus for coiling metal stock com
said mandrel to and from its coil pitching posi
prising, a rotatable ‘shaft carrying a mandrel, a
tion whereby to vary the pitch of the spiral into
rotatable shaft carrying a stock feeding roll, a
which said stock is coiled, said roll being also
rotatable shaft carrying a stock ‘forming roll po
movable longitudinally of its axis and of said
sitioned at one side of said mandrel, a rotatable
mandrel retractedly from its adjusted coil pitch
shaft carrying an idler roll at the opposite side
ing position, means automatically and period 50 of said mandrel, said idler roll adapted to en
ically operated to move said idler roll out of its
gage the side of stock as it is coiled about said
coil pitching position to ?atly nest and eliminate ' mandrel, said idler roll shaft being longitudi
pitch to the endmost convolution of the wound
nally movable, a cam provided with an endless
stock, and a stock cutter operating periodically
camway, a connection between said endless cam
for cutting said stock after a predetermined num 55 way and said idler roll shaft for periodically 1011-,
ber of convolutions of the stock have been wound
gitudinally reciprocating said shaft, a power
and end formed about said mandrel.
shaft, a drive connection between said power shaft
9. A construction as de?ned in claim 8 and
and said feed roll and said forming roll shafts,
describing more speci?cally that the automati
said drive connection including a counter shaft,
cally and periodically operated means formoving 60 a drive connection between the mandrel shaft and
said idler roll out of. its coil pitching position as
said power shaft, a drive connection between the
comprising a positively driven rotatable cam hav
mandrel shaft and said cam, standards for sup
ing therein an endless camway and means con
porting all of said shafts, said sha-fts at their
necting said camway and said idler roll for im
ends provided with blocks carrying shaft recep- .
65
parting retractive longitudinal movement to said
tion bearings, said standards provided with seats
idler roll during the end winding formation of
for interchangeably receiving the bearing blocks
the stock as wound on said mandrel
of the forming roll and idler roll, a pair of said
10. A construction as de?ned in claim 8 where
standards provided at their opposite sides with‘
in. the positive drive for the mandrel includesa
seats for bearing carrying blocks for said counter
rotatable shaft provided with an internal bore, 70 shaft whereby said shaft may be positioned at
said mandrel extending into said bore and hav
either side of said standards, and the positions
ing therein a ?attened end, a ?at bar within l of the forming roll and idler roll and their shafts ,
said shaft bore and engaging the ?attened end
being interchangeable, for the purpose described.
of the mandrel, and means carried by the shaft
14. A construction as de?ned in claim 13
and engaging said bar for forcing the same un
wherein, a stock guide is provided for guiding the
all-Dam 7
15'
.
stock to‘thej feed ‘roll and_mandrel,fsaidguide
being mounted on one of ‘ saidj 'standardsgsaid
cutter associated and rotatable with» said» form;
'
' groove, the face of said plate being arranged with
respect to the face of said forming roll'so that
.the spiral groove in. the face of said plate is
rcomplemental tO'the radial slot in the face of
said forming roll, at least-one cutter blade pro
said stock guide at either side of said mandrel.
15, A machine for coilingmetal stock com;
prising a driven rotatable circular mandrel; a
vided withhalug mounted for reciprocal (move
.nient within said‘ radial‘ slot, the'lug. of saidv blade‘
extending into and being in engagement with
said spiral groove, and means'for releasably look
ing said plateto said forming .roll whereby ro~
driven stock-feeding r011 above said mandrel and
engaging stock on said’ mandrel, a driven rotate
able forming roll having a" face thereof provided
_ _ with at least one radial "slot arranged at one side
’ of said mandrel and-engaging‘stock thereof, an
idler roll at the ‘opposite side of said mandrel
and engaging the side of ‘stock onsaid mandrel
to cause said stock to be vvoundabout said mane‘,
drel spirally. and-of- a.‘ predetermined pitch, a
roll,’ said cutter including a rotatable plate
‘having a face thereof provided with a spiral
guide being constructed to~ permit stockto- move
therethrough in either direction,~~and said stand‘
ard being provided withmeans for supporting
' tation of said plate, causesv the projection‘ and ref
15
traction of the cutterlyblade.
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@JQHN VBALLA, Sin
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