Improvements in Machines for Making Spiral Springs.
Year: 1892

page_text: Date of Application, 23rd Aug., 1892-Accepted, 7th Jan., 1893
COMPLETE SPECIFICATION.
Improvements in Machines for Making Spiral Springs.
I, PETER FRASER, a subject of the Queen of England, residing at Bridgewater,
in the County of Plymouth, State of Massachusetts, United States of America,
Gentleman, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
This invention relates to machines for making wire springs for furniture,
upholstering, bed bottoms, etc., and has for its object to provide a machine of this
character of simple design.in which the springs may be formed completely and
more rapidly than heretofore possible. A further object of the invention is to
reduce to the minimum the labor necessary in running and handling the machine in
the formation of springs.
To the above ends the invention consists in certain novel details of construction
and combinations and arrangements of parts, all as will be hereinafter described
and pointed out, particularly in the appended claims.
Referring to the accompanying drawings:
Figure 1 is a front elevation of a machine constructed in accordance with my
present invention.
Figure 2 is an elevation looking at the left hand end of the machine.
Figure 3 is a rear elevation.
Figure 4 a top plan view.
Figure 5 a vertical section on the line -, Figure 1, looking toward the right
and showing the position of the shaft in the cone operating mechanism.
Figure 6 is an elevation of the mechanism at the right hand end of the machine
with the frame removed, showing the system of pulleys and belts for operating the
various parts of the machine.
Figure 7 is a longitudinal vertical section of the cone and parts lying immediately
adjacent thereto in the same vertical plane.
Figures 8 and 9 show one of the operating gears for the cones or forming heads
in elevation and transverse sections respectively.
Figures 10 and 11 are detail elevations of the operating mechanism for the wire
cutter.
Figure 12 is a section on the line y-y, Figure 1, showing the gears for driving
the left hand head and cone.
Figure 13 is a side elevation of the driving pulleys.
Figures 14 and 15 sections of the same on the line - of Figure 13, when
separated and when brought together to reverse the machine.
Figure 16 is an end elevation of the main drive pulley and
Figure 17 is a section of the same on the line
of Figure 16.
Figures 18, 19, 20 and 21 are detail elevations and sections of one of the clutch
operating mechanisms.
Figure 22 is an elevation of the inovable head of the spring compressor and
Figure 23, a section of the same on the line 3, 2 of Figure 22.
Figure 24, is a diagrammatic view showing the position of the gears for driving
the cones or formers looking at them in a direction opposite to that in which the
shafts are viewed in Figure 5.
Figures 25 and 26 are enlarged top plan views of the wire cutting mechanism
showing it out of operation and just beginning to cut the wire.
Figure 27 is a sectional view on the line 2, Figure 25.

page_text: Figure 28 is a detail plan view of the male cutter showing its bevel or cutting
edge.
Figure 29 is a detached view of the compressor with a spring in position to be
compressed.
Figure 30 is a similar view with the compressor head advanced and the spring
compressed between them.
Similar letters of reference in the several figures indicate the same parts.
In the present machine, as in prior machines of this class, I employ a pair of
cones or formers around which the wire is coiled to form the spring, and it is the
aim of the present structure to simplify and improve the mechanism for operating
the cones or formers rendering the machine practically automatic, it being necessary
for the operator to simply control the parts during the formation of each spring
and its discharge from the machine.
In carrying the invention into practice a main frame A is provided, the particular
form or construction of which is immaterial, but it is preferably provided with a
series of horizontally arranged bearings for shafts to be presently described, and an
overhanging or laterally extending portion adapted to support a movable cone,
together with part of its operating mechanism.
Referring particularly to Figures 1, 5 and 6, it will be seen that the main drive
shaft B is journaled in the base of the machine and is adapted through gearing to
be presently described, to drive a counter shaft. B from which both the cones or
formers DD' are driven.
As shown one stationary and one movable cone is employed and the first
mentioned, the stationary cone D is carried by a shaft B (Figure 7) which
through gears B6, B7 Fig. 27, is driven directly from the counter shaft B' and the
latter, ie, the movable cone or former D' is driven from said counter shaft through
the medium of gears and K, Figure 12. The gears J and K are mounted in
recesses in the movable head and the shaft B is provided with a longitudinal
groove in which a feather or key in a gear J slides, whereby said gear is rotated
with the shaft, irrespective of its longitudinal position thereon, hence said cone or
former may be shifted or moved as desired, without being thrown out of operative
connection with the counter shaft B³.
The movable cone when brought against the stationary cone, is preferably held
in alignment by a pin or projection y, and in operation the spring being formed is
usually commenced or the end of the wire held at the base of the movable cone
which is therefore provided with means for catching and holding the end of the
wire as follows:
The movable coue D' is supported in the hanger or head H by a shaft or journal w
to which it is connected by the pin y, so as to be capable of a limited longitudinal
movement outward under the influence of a spring . At the rear end, the head H
is provided with a hanger depending from the shaft B2, and through this hanger a
pin U connected to the journal 70 passes, a spring being interposed to force the
journal forward-as will be readily understood from an inspection of Figure 7.
=
This pin U has a pair of lock nuts on the outer end for limiting the forward
movement of the journal and also serves as a ready means of separating the holding
jaws for the end of the wire. To accomplish this, a lever T pivoted to a downward
extension of the hanger, passes beneath the nuts and is connected at the upper end
to a sliding bar S extending through hangers for the head H, to a point near the
front of the head where it is adapted to co-operate with an inclined surface of a
key R carried by a collar y rotating with the shaft B but capable of a longitudinal
movement thereon. When the collar is moved into position for the inclined
surface of the key to strike, the bar S, it will be seen that through the connections
described; the journal is moved rearward against the tension of the spring and
leaves a space into which the wire may be dropped. To ensure the gripping of
the wire at the proper point, a gripping jaw (Figure 7) having a notch in its
forward end and adapted to co-operate with a jaw formed by the rear end of the
cone is connected rigidly to the journal e by means of its rearwardly extending ends

page_text: as shown, and this gripping jaw is located at the end of the spiral formed in the
cone for guiding the wire, thus it will be seen, that the jaw is opened each time
the shaft B2 rotates, during the time the collar 7 is in operative position, for
the reception of the end of the wire at the moment when and place where a spring
is to be started.
To facilitate and control the gripping of the wire a crank shaft N Figs. 1 and 4
is journaled in the movable head and carries at the inner end a crank o provided
with a pin p entering the groove p¹ in the collar 7x whereby, when the shaft is
oscillated, the collar is moved into or out of operative position, and at the same time
it is caused to retain its position relative to the head irrespective of the longitudinal
movement of the latter. The shaft N is provided at the forward end with a
handle L by which it may be oscillated and to assist the operator, a projection mis
also formed on the head beneath which he may pass his fingers while depressing the
handle with his thumb, all as shown clearly in Figures 1 and 4.
The shaft B2, it is obvious, may be rotated in any desired manner, but it is
preferably rotated in unison with the cones or formers by means of the gear
wheels B, B, on the inner ends of the shafts B1, B2, respectively, as will be readily
understood by an inspection of Figures 7 and 24.
When the spring has been wound on the formers it is of course necessary that the
wire should be cut at the inner end and to accomplish this automatically, the cone
or rotating portion of the fixed head is provided with a female cutter a Figs. 25
and 26, preferably having a shank passing way through the cone and shaft to unite
the two and itself held in position by a set screw 6, Figure 27. Co-operating
with this cutter is a male cutter having a bevel or cutting edge. The cutter d
has an extended shank d working longitudinally in a recess in the shaft B and
adapted to be retracted to separate the cutting edges by a spring e in the forward
end of the recess.
From Figures 7, 10, 11, 25 and 26 it will be seen that the male cutter is advanced
by co-operating with the rounded forward edge of a force barf mounted in bearings
in the fixed head or frame and advanced by a second bar g having a recess
co-operating with its inclined rear end as shown in Figure 10. The bar g in turn is
moved by the crank mounted on a shaft i journaled in the frame and having a
forwardly extending handle j, Figures 5 and 11, held in one position or the other by
a notched or friction spring 1. When moved in one direction by means of the
handle the crank / co-operating with a pink on the bar retracts the same and
advances the force bar into position to strike the inclined rear face of the male
cutter, driving the same forward and severing the wire if lying between the two
cutters as shown in Figure 26.
The force bar is preferably located above the cone or former and when the
machine is in operation it may be advanced and will thus remain in operative
position all the while and when the end of the spring is reached the cutter will
therefore automatically sever the wire and prevent all danger of its overrunning and
spoiling the free end.
To catch the rebound of the severed end of the spring a basket composed of
a series of forwardly projecting square fingers E united at the outer end by a tic
piece is located around the base of the stationary cone or former. In operation,
a wire having been placed in the gripping jaws at the outer end of the former aud
the collar released, it is held thereby and guided by the operator's hand or
otherwise in the spiral groove across the cones or formers until the inner end is
reached where it is automatically severed as before explained, then the operator
through mechanism to be presently described separates the two cones or formers at
the center line, by sliding the movable cone along the shafts, which operation. first
starts the spring from the stationary cone, then as the cones separate pressure on
the movable cone is released and under the influence of its spring it is moved
outward or away from the gripping jawa, releasing the outer end of the spring
automatically and as soon as the cones are sufficiently separated allowing the same
to drop between them down into position for being compressed.

page_text: The mechanism through which the counter shaft for rotating the cone derives
its motion from the main power shaft and the mechanism for separating and
returning the cones to normal position is as follows:
The counter shaft B' is provided with two pulleys C5 and C6 which through belts
as shown in Figures 1 and 6 are driven from pulleys C and C³ rotating in unison
with the main drive pulley C.
The pulley C is normally loose on the shaft B1 and its belt is crossed to reverse
its direction of rotation, but under normal conditions it is not in operation when,
however, it becomes necessary or desirable to reverse the machine or check it
suddenly to unwind the wire or relieve the operator in case he should get caught in
the mechanism it serves as a ready means for accomplishing these results. On its
inner side it is provided with a cone friction surface C adapted to co-operate with
a similar groove C10 in the pulley C Figs. 13 and 14 so that its motion may be
reversed. The shaft B' is provided with a collar 10, Figure 19, having cam surfaces
on one side with a smooth surface on the opposite side adapted to bear against the
pulley C and co-operating with this collar is a similar, but oppositely arranged
collar. carried in a box on the end of the crank arm and prevented from
independent rotation by set screws ². The collar 10 has a limited longitudinal
movement on the shaft, but is prevented from rotation by a set screw ill or
otherwise and it will now be readily understood that as the collar bears against
the collar with the cam surfaces in contact, when the cam crank arm ² is turned
in one direction or the other, the pulley C will be forced against the pulley C and
if the belt of C³ be simultaneously loosened it will be caused to rotate backward and
carry the counter shaft B with it. To move the crank and simultaneously loosen
the belt of pulley Cs a foot treadle u Fig. 5 is provided on the end of a foot lever u³
pivoting on shaft and having at the upper end a link 83 connected to the end of a
crank arm u³ carried by a rock shaft N (Figure 5) on which rock shaft is another
crank arm (Figure 6) carrying at its end a link o provided with a belt tightener
pulley co-operating with the belt for driving the pulley C. Moving with the
crank arm and preferably connected to the journal of the belt tightener pulley is
a link united to one end of a lever journaled on a shaft 60 and having its
opposite end connected to the crank arm for operating the cam by means of a
links, thus the operator may through the treadle, either tighten the belt for
driving pulley c³, or by an opposite movement loosen said belt and simultaneously
force the pulley C into frictional contact therewith and instantly reverse the
machine or stop the same much more quickly than would otherwise be possible.
Above the cones or formers or the heads carrying the same and preferably
rotating in a plane parallel with the plane of the longitudinal movement of said
head is a large drumi or pulley I having a crank arm and a link s connecting said
arm and the movable head as shown in Figure 3. Passing around this drum I is a
flexible connection or rope y one end of which is attached to a spring actuated
drum adapted to turn the drum or pulley I in one direction and the opposite end
of said rope or flexible connection is connected to a pulley o loosely mounted on
shaft B3 and adapted to be rotated at desired intervals to turn the drum I in the
opposite direction and through said drum I to move the movable head H carrying
the movable former longitudinally on its supporting shaft. The shaft B³ upon
which the pulley O is mounted carries a pulley C connected through a belt with a
pulley carried by the drive shaft and adapted to be rotated in unison with the
pulleys C², C³.
The belt for driving the pulley C is kept normally under tension. by a belt
tightener pulley a² hung on the shaft and drawn inward by a weight W through
a lever and link connection was shown in Figure 6. This keeps the shaft B³
rotating at all times while the machine is in operation, but the pulley o is loosely
mounted thereon and is adapted to be connected therewith through the medium of
a friction drum p, Figure 5, keyed to the shaft. The arrangement for throwing
the pulleys o, p, into contact is similar to that described in connection with the

page_text: pulleys c³, c, that is to say, a cam crank arm ³ is adapted to operate a pair of cam
collars similar to 2, 1, and therefore not requiring to be illustrated. Both crank
arms are seen in Figure 4.
To the end of the cam crank arm ² to connect pulleys o and p a link u² Fig. 5
is connected which through a lever t, link s, and crank arm 2 is connected to the
shaft The shaft q' at the left hand end, in position for operation by the
operator's left foot, carries a foot lever mx thus the operator by moving his left
foot may throw the pulley o into connection with its operating shaft and through it
cause a movement of the flexible connection drum I and movable head and former
to cause a separation of the heads and discharge of the spring as before
described.
Inasmuch as it is desirable and necessary to the successful operation of the
machine that the two forming heads shall rotate in unison and bear a certain
definite relation to each other, it becomes necessary to devise a means whereby the
gears for driving the same may be adjusted on the shafts and with relation to each
other, and for this purpose, the structure shown in Figures 8 and 9, is preferably
adopted wherein E is a friction cone or collar keyed to the shaft in any suitable
manner and d² a gear wheel corresponding to the gears B6, B7 or B, cored out to
fit the friction cone keyed to the shaft. On the opposite side of the gear wheel d
and preferably supporting the same away from the shaft is a collar c² adapted
through the medium of nuts 2 Fig. 7 on the shaft or otherwise to press the collar
against the gear wheel and force the latter into intimate contact with the friction
cone keyed to the shaft. With this arrangement, should it become necessary to
adjust the relative position of the gear wheel or shafts with relation to each other
it is easily and quickly accomplished by loosening the collar c, adjusting the wheel
to the point desired and again tightening the collar to lock the parts rigidly in
position.
To provide against possible exigencies and to prevent breakage of the machine
in case of sudden retardation or stoppage, the main drive pulley is preferably
connected with the pulleys C2, C3, C4, by cone friction surfaces C12, Figure 17, and
said pulleys C2, C3, C4, are therefore loose on the shaft being forced outward by
the spring. To force the pulleys together the cam collar arrangement described
in relation to pulleys C, C, is employed and the contact is maintained by a
weight t mounted on the end of the lever t which latter is connected by link with
the end of the cam lever 2, Figures 6 and 1. This holds the parts in operative
position under normal condition, but should the extraordinary resistance be offered
to the running of the machine it would permit the drive pulleys to slip and thus
prevent breakage of the more delicate parts.
In the preferred form of the machine, a basket or cradle Figs. 29 and 30 for the
reception of the springs when dropped from the forming heads or cones is preferably
provided, consisting essentially of the three shafts o, os and p², the latter con-
stituting the gate or bottom of the cradle and having a limited lateral movement to
open the cradle and permit the spring to fall through, for which purpose, it is,
mounted in the ends of crank arms or hangers 3 carried by shaft o². Shaft o' has
on its outer end an operating arm e adapted when elevated, to rest on the end of a
wedge shaped projection Figs. 2 and 3 moved by a shaft 3 whereby the shaft p²
is held in position to form the basket or cradle. Mounted on the shafts o³, o, is a
movable compresser head m² which co-operating with the stationary compresser
head m compresses the spring as will be presently described. The movable com-
presser head is connected to one end of a flexible connection or rope y' Fig. 3
passing around guide pulleys a², and is connected to the drum or grooved
pulley running loosely on the end of shaft B. The opposite end of the flexible
connection y or the end extending beyond the movable compresser head is con-
nected to a spring drum g³ serving to bring the compresser head back to the
position shown in Figure 1.
On the end of shaft B outside of the drum 0² is a friction disk and just inside
of said drum wis a cam clutch actuating mechanism similar to that described in

page_text: connection with pulleys C³, C, and through its cam arm ² it is operated by the
foot pedal m* through the link ², lever t², links and crank arm Fig. 5.
-
Each of the compresser heads is provided with spring holder consisting of a
series of wings mounted on a central boss or collar n³ and conforming approximately
to the shape of the spring to be compressed. The wings cause the coils of the
spring to properly distribute themselves during the compressing operation and as
the heads approach each other the wings and bosses retreat to the position shown
in Figure 30, allowing the flat faces of the heads to come together. These wings
and bosses are prevented from becoming loose, by friction springs nº. The spring
holder in the stationary head is furthermore pressed outward by a spring 10,
Figure 29, whereby as the movable head retreats it is forced outward and as the
movable head reaches the extreme of its outward movement the boss thereon
coming in contact with the frame or some stationary portion thereof is caused to
move through the head into normal position as will be readily understood.
In its travels to and fro, the movable head is adapted to control the opening and
closing of the basket or cradle by means of a rod 3 Fig. 3 having a stop a³
adjustably mounted thereon near its inner end and a stop ³ near its outer end with
both of which the movable head is adapted to contact and move the rod b³ in or
out as the case may be. When the head is at the inner extreme of its movement
it strikes the stop a³, moves the rod 3 inward and releases the operating arm ³ of
the lower shaft or gate p³ allowing said gate to swing outward and when said head
reaches the outer extreme of its movement after releasing the spring and allowing
it to drop through the cradle, it strikes the stop ³, moves the rod and the
inclined projection thereon outward, again elevating the arm and closing
.the basket for the reception of another spring.
In operating this part of the machine the operator presses with the heel of his
left foot on pedal m* turning rock shaft q, on the end of which the lever,
Figure 5, is mounted. This operates levers s³, 12 and 2 and through these the
handle of the clutch actuating mechanism for the pulleys and w², causing the
round belt y' to draw the compresser head inward against the tension of the spring
in the drum g³.
While the compresser head is in motion, the spring holders n³, n³, hold the spring
in proper position, and as the heads approach, the male spring holder enters the
female spring holder n³ as far as the shoulder and the force of the spring which is
being compressed throws the flanges on each spring holder through the slots, f³,
Figure 22, and also throws the spring holder n into the position shown in
Figure 30.
Just before the compresser head m² reaches m³ it strikes the stop a³ and allows
the rod to swing outward. The operator now releases the heel pressure on the
pedal, disconnects the friction wheel and the spring pulley g³, winds up the flexible
connection y drawing back the movable head which latter as it reaches the outer
extreme of its movement returns the operating handle and rod p³ to its former
position.
The operation of the machine is as follows:
The operator presses with his right heel on pedal u, which by means of links s³,
lever u³, rock shaft N, lever u, and link of draws the belt tightener pulley r
tight against the belt of C and C and starts the machine. Then with wire in
hand he presses the wire close to the left hand shoulder of cone D' and taking
hold of handle or knob m presses down thumb latch L on crank shaft N. As
the collar grevolves and the inclined key R strikes bar S, the lever T draws out:
the mandrel W and the piece ✗ attached to it enough to let the end of the wire
enter the notch b in piece X. When the key R passes by the bar S, the spring Z
throws back the mandrel and the piece X into their former position and the wire
is caught. When the operator feels the wire is caught he releases the thumb
latch on crank shaft N.
The operator still holds the wire in his hand and the wire follows the grooves in
the two cones until it reaches the right hand shoulder of cone D, where it is cut

page_text: by the cutter d, which has already been placed in operative position as before
described. The cut off wire which has now become a spring, is held by the basket E
until its rebound or reaction is ended.
The operator then presses with his toe on pedal m, which is attached to rock
shaft and lever arm, which operates the lever combination s², t2 and u² operating
as shown by the arrows in Figure 5 to operate mechanism actuating a clutch as
before described on counter shaft B³ and setting in motion loose pulley o, to which
one end of round belt is attached. This round belt is fastened on pulley I.
When pulley o is put in motion pulley I is moved to the left and by its arm links
draws back cone D' to the left, allowing the spring to drop into the compresser
which is immediately under it. The operator then removes the pressure of his left
foot from pedal m* when pulley o is no longer actuated and cone D¹ is returned to
its former position by the round belt being wound upon spring wheel r, thus
reversing the previous action of wheel I and arin link s. This allows the spring to
drop down into the compressing cradle when the compressing operation before
described takes place.
The machine as a whole it will be noted is simple and the mechanical parts are
such as to permit of great speed in the formation of springs. It will be particu-.
larly noted that the length of the frame is reduced in order to allow which the
movable head H is provided with bearings surrounding the shafts B', B, B and B³
and projecting in the same direction as the forming conc. This allows of an
extended bearing to prevent lateral movement of the cone and at the same time the
movable head H may be run out to the end of the frame no additional space being
necessary for the accommodation of the bearings.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same, is to be performed, 1 declare that what I
claim is:
1. In a machine for forming spiral springs, the combination with the rotary
longitudinally movable forming head held advanced by yielding pressure, of the
power shaft and gearing connecting said head and power shaft to retract the
head and a shifting connection in said gearing under the control of the operator,
whereby the head may be moved back at the will of the operator; substantially as
described.
2. In a machine for forming spiral springs, the combination with the rotary
longitudinally movable spring pressed forming head, of the power shaft, gearing
connecting the head and power shaft and a clutch under the control of the operator
interposed in said gearing whereby the head may be moved back against the tension
of its spring substantially as described.
3. In a machine for forming spiral springs, the combination with the rotary
longitudinally movable spring-pressed forming head, of a drum and flexible con-
nection for moving the head against the tension of its spring, a power shaft and a
clutch under the control of the operator interposed between the power shaft and
drum whereby it may be rotated and the head moved; substantially as described.
4. In a machine for forming spiral springs, the combination with the rotary
longitudinally movable spring pressed forming head, and the pulley having a lever
arm connected with said head, of the flexible connection passing around said pulley,
the drum to which said flexible connection is secured, a power shaft and a clutch
interposed between said power shaft and drum whereby the head may be moved.
against the tension of its spring; substantially as described.
5. In a machine for forming spiral springs, the combination with the rotary
longitudinally movable forming head and the pulley having the lever arm connected
with said head, of the flexible connection passing around said pulley, the spring
drum to which one end of said connection is secured, the loose drum to which the
opposite end of said connection is secured, a. power shaft and a clutch under the
control of the operator interposed between said last mentioned drum and power
shaft; substantially as described.

page_text: 6. In a machine for forming spiral springs, the combination with the hanger or
head, of the rotary forming cone, carried thereby and having a limited longitudinal
movement, and wire gripping jaws at the base of said cone adapted to be opened by
the longitudinal movement of the cone; substantially as described.
7. In a machine for forming spiral springs, the combination with the hanger or
head, and the rotary forming cone carried thereby and having a limited independent
longitudinal movement, of a wire gripping jaw at the base of said cone movable
independently of the cone and adapted to co-operate with a jaw on the base of the
cone substantially as described.
8. In a machine for forming spiral springs, the combination with the hanger or
head and the rotary forming cone carried thereby and having a limited independent
longitudinal movement, of a wire gripping jaw mounted in the hanger or head
movable independently of the cone and co-operating with a jaw on the base of
the cone and a spring for holding said movable jaw projected; substantially as
described.
9. In a machine for forming spiral springs, the combination with the hanger
or head, the rotary forming cone carried thereby and having a limited longitudinal
movement, and the spring for holding said cone outward, of a movable wire
gripping jaw mounted in the hanger or head movable independently of the cone,
a spring for advancing said jaw and a hand lever for retracting the same; substan-
tially as described.
10. In a machine for forming spiral springs, the combination with the longi-
tudinally movable hanger or head, the rotary forming cone carried thereby, the
gripping jaw rotating with said cone and the shaft lying parallel with said head,
of the collar mounted on said shaft for operating the gripping jaw, whereby the
gripping jaw may be operated; substantially as described.
11. In a machine for forming spiral springs, the combination with the longi-
tudinally movable hanger or head, the rotary forming cone carried thereby, the
gripping jaw rotating with said cone, and the shaft lying parallel with said head,
of the longitudinally movable collar mounted on said shaft for operating the
gripping jaw and the hand lever for moving said collar into operative position;
substantially as described.
12. In a machine for forming spiral springs, the combination with the oppositely
arranged rotary heads having a relative longitudinal movement and the wire
gripping jaws carried by one head, of the co-operating cutting jaws mounted directly
on and rotating with the opposite head and the movable force bar mounted in
stationary bearings co-operating with the cutting jaws to close the same and sever
the wire, and mechanism under control of the operator for moving said bar;
substantially as described.
13. In a machine for forming spiral springs, the combination with the rotary
forming head having the pair of co-operating cutting jaws mounted on and rotating
with the said head, of the movable force bar mounted in stationary bearings
co-operating with the jaws to close the jaws, the bar g and the crank shaft and
crank controlled by the operator for operating said bar g; substantially as
described.
14. In a machine for forming spiral springs, the combination with the longi-
tudinally movable hanger or head, the rotary forming cone carried thereby and the
wire gripping jaw at the base of the cone, of the rod n connected with the jaw,
lever T, co-operating with the rod, bars, engaging the lever, the collar * having
the incline engaging the. bar and rotary shaft B2 carrying the collar; substantially
as described.
15. In a machine for forming spiral springs, the combination with the longi-
tudinally movable head carrying the forming cone with the gear wheel for rotating
the cone journaled in the head, of the counter shaft and the gear rotating with, but
longitudinally movable on said shaft and in mesh with the cone driving gear;
substantially as described.
16. In a machine for forming wire springs, the combination with the counter

page_text: shaft and forming cones, of the gears for driving the cones from the counter shaft
cored out on one side, the friction cone keyed to the shaft and fitting in said
gear and the collar fitting on the opposite side of the gear; substantially as
described.
17. In a machine for forming wire springs, the combination with the forming
cones and driving mechanism, of a controlling mechanism consisting of the clutch
surfaces and the longitudinally movable collar for moving said clutch surfaces, of
a rotary collar having cam surfaces co-operating with the surfaces of the longi-
tudinally movable collar and an operating handle for moving said rotary collar;
substantially as described.
18. In a spring machine, the combination with the forming cones and drive shaft,
of a reversing gear interposed between the cones and drive shaft, consisting of the
fast and loose pulleys, the belts passing from the drive shaft around said pulleys,
one being crossed to drive its pulley in the opposite direction, a clutch operating
mechanism for moving said fast and loose pulleys into engagement and a belt
tightener normally co-operating with the belt of the fast pulley and moving in
unison with the clutch operating mechanism, whereby the tension on said belt is
released and the pulleys thrown into engagement simultaneously; substantially as
described.
19. In a machine for making spiral springs, the combination with the compressor
cradle formed by the three shafts, and the compressor head movable longitudinally
on said shafts, of a drive shaft, gearing between said head and shaft and a clutch
interposed in said gearing under the control of the operator; substantially as
described.
20. In a machine for forming spiral springs, the combination with the cradle
and movable compresser head, of the spring for retracting said head, the drive
shaft, a drum having a clutch connection with said shaft and a flexible connection
between the drum and compresser head; substantially as described.
21. In a machine for forming spiral springs, the combination with the cradle
having the laterally movable gate with its operating arm, and the longitudinally
movable compresser head, of the longitudinally movable shaft having the incline
controlling the operating arm of the gate and having the projections thereon in the
path of the movable head, whereby the movement of said head opens or closes the
gate; substantially as described.
Dahi 22-1 day of Aust 1802
W. P. THOMPSON & BOULT,
Agents for the Applicant.