improvements in Machines for Colling wire.
Year: 1886

page_text: improvements in Machines for Colling wire.
I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of my invention and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement :-
The object of my invention is to beud wire into coils of various kinds, such as
a continuous spiral, or a connected series of conical helices, or hemispherical coils:
adapted to be cut or severed at intervals to form separate spiral or helical.coils, in
such a manner that the successive coils or helices in a series shall be uniform in
shape and size.
Various devices have heretofore been employed for this purpose, whereby wire
has been forced by feed-rolls against a loose forming roll, adjustable in position
relatively to the feed-rolls, but in such devices the forming-roll was removed from
its contiguous feed-roll a distance greater than the diameter of the wire, and this
distance was varied whenever the forming-roll was adjustably moved.
In such a form of construction, a variation in the quality of the wire would
produce a variation in the form of the successive coils. For example, should the
resiliency of the wire be greater in one place than another, it would not be per-
manently bent by the distant former to the same degree of curvature that other
and softer portions, would be.
And, as it is impracticable if not impossible to produce a long wire of exactly
the same quality and temper throughout its length, the successive coils would
necessarily differ in form according to the temper and quality of the wire.
My invention consists in providing a wire-feeding roll, upon which the wire is:
bent, with a forming roll, for bending the wire, concentrically revoluble in a pivotted
supporting frame, about said feed roll, and distant therefrom a suitable distance to
cause the two rolls to grip and concurrently feed and bend the wire, as it passes
between them; and in providing means for adjusting the position of the forming-
Pains S/1

page_text: after described.
In the accompanying drawings
Figure 1 is a front elevation of my improved wire coiling machine.
Figure 2 is a top view or plan of same.
Figure 3 is an end elevation.
Figure 4 is a rear elevation.
Figures 5 and 6 are respectively, front and cross sectional views of one of the
feed rolls.
Figures 7, 8 and 9 are respectively front, side and sectional views of the wire
deflector.
Figure 10 is a top view or plan of a cam-operated slide for actuating the
deflector.
Figure 11 is a front elevation of the detached frame which supports the forming-
roll, and the deflector.
Figure 12 is a back elevation of frame shown in Figure 11.
Figure 13 is a side view of the deflector operating cam.
Figure 14 is a side view of the cam for operating the pivotted frame which
supports the forming roll.
Figure 15 is a side view of the cam, which operates the wire severing device.
Figure 16 represents a double helical spring.
Figure 17 is a detail view in cross section on line x, x of Figure 1, and,
Figure 18 is a view in detail of the side and edge of the fixed deflector.
Figure 19 is a detail view of the loose guide roll between the grooved pulleys,
both separate and on its screw pivot.
Similar letters of reference indicate corresponding parts in the several figures.
A is the frame of the machine, which supports the various parts including the
wire feeding rolls a, which are connected with each other and with the driving
mechanism by gear wheels, as shown in Figure 4, by which they are actuated to
feed a wire, shown by dotted lines in Figure 1 along between the forming-roll C
and the last feed roll in the series.
The forming roll C is journalled in a box, shown by dotted lines in Figure 1,
which is supported by the frame B pivotted concentrically with the feed roll a.
The box of the forming-roll is adapted to slide in a slot B¹ in the frame, to
and from the last roll a, and is secured in the desired position by the adjusting
screw C¹.
The frame B is also provided with the wire deflector D, adapted to slide laterally
in a slot d in the pivotted frame.
This deflector is shown in detail in Figures 7, 8 and 9, Figure 7 being the face
view, shown in Figure 1, of the head, which is a metallic plate bevelled to a thin
edge, on the side contiguous to the forming-roll, and Figure 8 being a side elevation
showing the shank d¹ adapted to slide in the slot d shown in Figures 11 and 12,
and d the pin which slides in the aperture shown in guide d³, and engages with the
actuating arm R' on the slide R, the slide being supported by and sliding on pins r
passing through slots r¹ in the slide.
•
The slide is actuated by another slide T shown in detail in Figure 10.
This slide is provided at one end with a bevelled point t which actuates the
slide R.
The slide T is provided at its other end with a frictional roll t³, which rides upon
the can shown in detail in Figure 13.
The cam is attached to shaft Q1 which is actuated by the cogged wheel W
secured thereon.
Wheel W is connected by wheels W' and W, with pinion W³, on the main
driving shaft S.
This shaft is also provided with gear wheel W', which actuates the wheels W³,
Wo, W7 and W, to drive the feed-roll shafts L, L¹, said shafts being provided with

page_text: meshing gears W. and W10, shown by dotted lines in Figure 4, which causes them to
rotate in opposite directions thereby impelling the wire introduced within the series
of feed-rolls onward toward the forming-roll, and deflectors.
The shaft Q' is also provided with cam M, shown detached in side elevation in
Figure 15, which operates the hammer F.
The hammer is pivotted to the frame at e, and is provided with an arm f which
rides upon the cam as shown in Figure 1. As the spur m of the cam passes from
under the arm, after lifting the hammer, the latter falls upon the chisel head G to
cut off the wire passing thereunder.
The force of the downward blow of the hammer, may be increased by means of a
spring as S¹.
There may be used an auxiliary chisel or edged anvil g beneath the chisel to cut
the wire upon two sides.
which
The same shaft Q' is also provided with cam K, the office of which is to
automatically actuate the pivotted frame B which supports forming-roll C.
The slotted arm J, pivotted to the frame at J¹, carries a friction roller
rides upon the cam K, and is connected with the frame B, by a link H H
The frame B is also provided with a horizontal arm E adapted to receive a
weight, which may be hung from the hook shown in the drawings.
The tendency of the weight is to maintain the frame B in a vertical position, in
which the forming-roll is vertically over the last of the feed rolls, in which position,
wire passing through the machine, would remain unbent.
The action of the cam K is against the resistance of the weight, to turn the
frame B upon its pivot, to bend the passing wire. The more the frame is revolved,
or turned, the more will the wire be bent. The action of the cain K upon the
movable frame inay be modified by means of the adjustable connection of the
link HH with arm J; a spur from the link, adapted to slide longitudinally of
the slot, shown in the arm, can be held at any desired point therein, by the
nut J. The nearer the pivot of the arm, the end of the link is secured, the less
will be its movement.
The link may also be adjustable longitudinally by means of the threaded nut I,
fitting upon the threaded end of section H' which passes through a corresponding
threaded aperture in the contiguous ends of section H, as shown in Figure 1.
The rolls and cams, being all driven by a common shaft S, their relative action
is automatic, and the cams being all secured to shaft Q the whole duty of each
cam is performed at every rotation of the shaft.
When the cam K is in the position shown in Figure 1, the forming-roll is turned
over almost to its extreme limit of revolution, and the wire is bent to form the
small coils of the spring; when the cam advances a half revolution, that portion
having the shorter radius is in contact with the friction roller on arm J, and the
weighted arm E forces the former-roll up nearer a vertical position relatively to
the last feed roll, and the larger coils of the bed-spring are formed.
As the wire passes, from the former-roll, it strikes the deflector, secured on the
movable frame B by a screw or bolt, as shown, and is bent or deflected laterally
from its straight line of passage, through the feed rolls. A fixed deflector, would
separate the coils of the spring by a fixed angle of deflection, but the sliding
deflector D, acted upon by the cam Q, through slides T and R, automatically varies
the angle of deflection, which separates some of the coils more widely than others.
The fixed deflector D' is essentially the same in form as the deflector D, and is
secured to the frame B so as to be vertically-adjusted by a screw bolt and nut, as
shown in figure 1. of the drawing.
The fixed deflector being unnecessary when the adjustable deflector is used it is
not shown in all the Figures.
Thus at each revolution of the shaft Q1, I am able to make a complete spring
and unless the springs are cut from the main wire, a series of connected springs.
I prefer however to cut off each spring as made, and for this purpose make use
of the chisel g, shown partly by dotted. lines in figure 1.
.

page_text: .
When the wire has reached the proper point to be cut off, the arm m of cam M
which has lifted the hammer F passes from under the arm f, and, the hammer falls
upon the chisel head with sufficient force to partly sever the wire, leaving the con-
nection sufficiently strong to draw the remaining wire forward between the feed-
rolls until the partly severed portion reaches the forming roll, which bends and
breaks the wire at that point.
By employing differently shaped cams I am able to produce differently shaped
coils, and to vary the degree of deflection of the coils, as desired.
•
A limited variation can also be produced with the same cams, by adjusting the
length of the link EH, or its point of attachment, to arm J, as before described.
The slide T, is also adjustable in length, being made in two sections and having an
adjusting screw t³ for sliding one section upon the other, as shown in Figure 10.
The rolls may, some or all of them, be grooved, ns shown in figures 2, 5 and 6,
to prevent lateral slipping of the wire thereon.
The pivotted frame B, may be turned by hand, to cause the forming-roll C to
bend and form the coils of wire, either by grasping the frame itself, or the weight
supporting arm E.
The frame may also be brought back to its normal, or vertical position, by a
spring E', shown by dotted lines in figure 1, instead of by a weight on arm E,
when desired.
The deflector D may also be operated by hand when desired.
The natural tension of the wire, as it is fed against the deflector, is sufficient to
force back the slides R and T, and keep the friction roll in contact with the
operating cam Q, without the use of weights or springs.
The screws a¹ serve to adjust the position of the feed-rolls a relative to each
other; by turning the screws to the right the upper-roll is forced down nearer the
lower roll, to grip the wire more firmly, and by turning the screw back the rolls
may be farther separated to admit a larger wire.
P represents the loose guide-rolls between the grooved rolls a, said guide rolls
being mounted on slotted slides p adjustable by means of the screws p in the
slots 2. These slides p are cut out at p³ to slide in the T-shaped projection a³,
through which passes the adjusting screws p', so as to bear against the slides for
the purpose of adjusting them, and with them the loose rolls. The form of the
idlers is not essential und no claim is made thereto.
I make the arc-slot & and the straight slot s¹ in the curved and straight arms,
respectively, of the segment S2, which is pivotted to the machine frame at its end
directly above the shaft Ss of the wheel W. The segment is capable of being
swung on its pivot, in order to be adjusted for different sizes of wheels W*. A set
screw passes through slot & and screws into the frame, so as to hold the segment
at whatever adjustment it may be placed.
The object of adjusting the forining roll, by sliding its box in slot B¹ on a line
radial to the pivot of frame B, is to accommodate the machine to different sizes
of wires.
In changing the adjustment from that adapted for small wire to that adapted
to larger wire, the journal box of the forming roll is permitted to slide outward
from the pivotal centre of the supporting frame B, by turning back the adjusting
screw C¹
I have, by dotted lines in Figure 2, indicated the position of a coil of wire as it
issues from the machine.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed as communicated to
me by my foreign correspondent I declare that what I claim is;—
First. In a wire coiling machine, the combination with. a series of feeding rolls a,
of a rotary forming roll, in a pivotted frame rotating concentrically about one of
the feed-rolls; and means, substantially as described, for rotating said feed-roll,
and revolving the frame-carrying the forming roll about the feed-roll;, whereby ¨a
4

page_text: wire can be fed between said rolls and bent by one of said rolls about the other,
substantially as described and for the purposes set forth.
Second. In a wire coiling machine having one or more pairs of feed-rolls, for
feeding wire to a forming-roll, the combination with a separate feed-roll, of a roll
supporting frame B pivotted concentrically with said feed roll; and a forming
roll C provided with journal boxes movable in said frame on a line passing
radially through, its pivot, substantially as described and for the purposes set
forth.
Third. In a wire-coiling machine, the combination with a series of feeding
rolls a, of a forming roll carried in a frame which is revoluble about one of the feed
rolls and pivotted concentrically therewith, the peripheries of the two rolls being
separated from each other a distance about equal to the diameter of the wire to
be coiled, whereby the rolls are adapted to concurrently feed and bend the wire,
substantially as described and for the purposes set forth.
.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.