Improvements in Machines for Sewing or Connecting Together the Edges of Leather and the like by Inserting Wire Coils.
Year: 1898

page_text: Date of Application, 21st Mar., 1898-Accepted, 6th Aug.,
1898
COMPLETE SPECIFICATION.
Improvements in Machines for Sewing or Connecting Together the
Edges of Leather and the like by Inserting Wire Coils.
I, JOSEPH HENRY TEMPLIN, of Birdsboro', County of Berks, State of Pennsyl-
vania, U.S.A., Superintendent, 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:-
My invention relates particularly to that class of wire coil machines in which
the coiled wire is inserted into the edges of material for the purpose of uniting
My present improvements are fully described in connection with the
accompanying drawings and are specifically pointed out in the claims.
the same.
Fig. 1 is a cross-sectional view of a machine embodying my improvements,
taken on the line of Figure 6.
Fig. 2 is a similar cross-section showing the rolls in different positions.
Fig. 3 is an end elevation, showing link removed.
Fig. 4 is a full opposite end view.
Fig. 5 is a full front elevation and Figure 6 a full rear elevation of the machine.
Figs. 7 to 13 are detail views.
A represents the main frame or bed of the machine which may be supported
at A¹ upon a convenient column not shown.
B is the movable clamping jaw which is carried above the frame A on end
links M and M', and which is guided vertically by upright extensions A³ from
the frame A. The meeting portions of the fixed frame A and of the movable
section B, form jointly the clamping jaws between which the material is held
during the insertion of the coil, and subsequently, the coil flattened, as usual in
this class of machine and as more fully referred to later.
As
The coil rolls E, F, G, are arranged triangularly and rotated in the same
direction as usual by means of suitable gearing including idlers e and g.
shown the lower roll E and intermediate roll F together with the idlers e and g
are mounted in a movable frame C suitably guided and adjustably clamped by
means of a bolt N which passes through a slot c in the frame C. This frame is
raised or lowered by means of a suitably mounted eccentric shaft J having a
handle, thus providing for moving the intermediate roll F below the plane of
the meeting faces of the clamping jaws A and B, and also for adjusting the lower
roll E relative to said plane so as to suit different thicknesses of leather. The
whole series of rolls are rotated by means of a crank e¹ preferably fixed to the
shaft of the idler e as shown.
The upper roll G is mounted in a separate sliding frame D which is carried upon
a shaft K mounted eccentrically in a top extension B of the movable clamping
jaw B, with which it is carried up or down while at the same time it is capable of
independent movement by merely turning said eccentrically mounted shaft by
means of a suitable handle k. The purpose and effect of this arrangement will be
further referred to hereafter.
The clamping jaw B, together with the roll G carried thereby as described, is
operated as shown by two separate eccentric shafts H and H¹ provided with levers h

page_text: and respectively. The turning of the eccentric shaft H¹ upon which the
links A and M are carried serving to raise or lower the latter together with the
second eccentric shaft H which is mounted in the upper ends of these links and
upon which the clamping jaw B is carried; while the turning of this second
eccentric shaft H serves to directly lower or raise said clamping jaw B. The pur-
pose of this double action, which forms no part of the present invention, being to
provide increased clamping movement and power.
The fixed clamping jaw A already described, is, in my improved machine,
formed also with a second clamping face a' arranged at about a right angle to
the main horizontal clamping face a; and a separate jaw P, adapted to operate
in connection with the face a', is pivoted to lugs A2 and operated by any suitable
means as screw Pl. This additional clamping device is adapted particularly for
use in squaring up the edge of the material as a preliminary operation to the
inserting of the coil therein.
In connection with the main clamping jaws I provide an improved device for
effecting automatically a transverse movement of a portion of each convolution of
the coil simultaneously with the flattening of the same, which operation has been
heretofore effected by different mechanism. In my present machine a portion
of the clamping face is formed by a separate piece B₁ which is recessed into the
jaw B, in which it has a limited movement between the bottom stops 65 65 and
the top of the recess. Set into the latter at 61 61 and also into the top of the
movable face piece B¹ at 6 b, are loose links 62 62 of equal length and
set at equal angles. These links serve to insure a perfectly parallel
movement of the face B¹ in the jaw B, similar to the movement of a parallel ruler.
A spring 6 is provided to normally swing the face piece B¹ into its lower position
against the stops b5 65.
In Figure 12 is shown in detail one of the coil rolls, F. These rolls are grooved
to engage the convolutions of the coil as indicated at f³. In order to stiffen the
coil and secure more satisfactory penetration of the belt without interfering with
the easy introduction of the coil to the action of the rolls, I form these grooves
with a varying pitch; the coil entering end of thereof having a pitch f¹ which is
greater than on the remaining portion of the roll, and corresponding practically
with the normal pitch of the coil, which latter is thus readily screwed into the
rolls a sufficient distance to be grasped and fed onward by the rotation of the rolls,
I am thus enabled to readily enter the coil and yet secure the advantage of stiffen-
ing the same by forcing it into a slightly different pitch where the penetrating
action is required.
ness.
In operating my improved machine the edges of the belt or other material are
conveniently squared while held in the clamping device P a¹, preparatory to insert-
ing the coil therein. When placed between the clamping jaws A and B the lower
coil roll E may be raised or lowered so as to bring the centre of the coil which is
interposed between the three rolls E, F, G, in the centre line of the belt thick-
In closing the clamping jaw B upon the belt the top roll is carried down
with it so as to slightly compress the interposed coil between the three rolls E, F, G;
the roll G being independently adjusted if necessary to suit the particular diameter
of the coil used and secure proper pressure of the rolls upon the latter as well as
proper clamping pressure upon the belt notwithstanding varying diameters of
coils and thicknesses of belts. After puncturing the belt and inserting the coil
as usual, the roll G and clamping jaw B are simultaneously raised by merely
operating the lever h or h¹ or both, thus releasing the belt. In flattening the
inserted coil it is placed under the roughened or serrated jaw face B¹, which latter
as it is pressed down upon the coil is automatically moved transversely while
maintaining a perfectly parallel position, thus insuring equal action upon the coil
throughout its length. The effect of this action being to slightly twist each con-
volution of the coil so as to cause the overhanging portions to freely mesh with
another similarly treated coil.
In order to remove the roller E as an obstruction to the free passage of the belt

page_text: through the machine it is only necessary to lower it a short distance as indicated
in Figure 1.
It is obvious that the particular construction shown and described may be
modified and that certain features thereof may be utilized without employing
others.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
-
1-A wire coil machine having a series of rolls arranged to close upon and rotate
an interposed wire coil, belt clamping jaws operating in connection therewith,
mechanism for simultaneously closing said rolls and jaws, and means for relatively
adjusting them to suit varying thicknesses of coils and belts.
2-In a wire coil machine, a series of three rolls arranged to engage an inter-
posed wire coil and geared together to rotate in the same direction, two of said
rolls and the idlers meshing therewith being in relatively fixed positions and the
third roll having a limited movement towards or away from said relatively fixed
rolls while remaining in gear with the latter.
3-In a wire coil machine the combination with a series of rolls arranged to close
upon and rotate an interposed wire coil, of clamping jaws having their meeting
faces in the same horizontal plane with said interposed coil, the lower member
thereof forming also one member of a second clamping device, and a third jaw
forming the other member of the latter, said second clamping device operating
substantially at right angles to the first.
In a wire coil machine, a series of rolls arranged to close upon an interposed
coil, and circularly grooved to engage the convolutions of said coil, the pitch of
said grooves at the receiving end of the rolls corresponding with the pitch of the
coil so as to freely admit the latter, and the pitch on the main portion of the rolls
being different from that at the ends so as to compress the coil and give additional
stiffness to it as it is being fed onward by the rolls.
5-A wire coil machine having a series of three rolls triangularly arranged and
adapted to close upon and rotate an interposed wire coil, clamping jaws having
their meeting faces in a horizontal plane between the top and bottom rolls, and
separate means for adjusting said top and bottom rolls.
6-A wire coil machine having clamping jaws adapted to engage and flatten
the convolutions of the coil, one of said jaws having a separately formed face with
a swinging connection whereby a positively, parallel transverse movement of said
face is produced by the closing of the jaws, means to return the same and a stop.
Dated this 21st day of March 1898.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.