Improvements connected with Boot and Shoe Soleing Machinery.
Year: 1891

page_text: Date of Application, 26th Jan., 1891
Complete Specification Left, 24th Oct., 1891-Accepted, 28th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements connected with Boot and Shoe Soleing Machinery.
We MARK CHARLES DENNE, of 1 Christchurch Road, Eastbourne, in the
County of Sussex, and THOMAS JAMES DENNE, of Hemel Hempstead, in the
County of Hertford, Engineers, do hereby declare the nature of this invention to be
as follows:-.
This invention has for object certain improvements connected with boot and shoe
soleing machinery, in which a barbed needle, an awl and a looper are employed.
The needle carrrier is a disc to which the needle is secured and which has a
vibratory motion round a horizontal shaft in the front of the machine. The motion
is imparted to it by an eccentric and rod from a back shaft parallel with the above
mentioned shaft.
The awl carrier is a similar disc to the above, which carries the awl in a reversed
position with respect to the needle and so that both the needle and awl move in the
same plane, when the feed is not in action. This disc.is included along with the needle
disc in the fork at the end of the eccentric rod.
The feed is obtained by means of a lever moving in an horizontal plane, one end
of which is engaged in a cam, and the other works between two collars on the boss
of the above mentioned awl carrier. The cam is so arranged that when the needle
is passing through the work following the awl point to point, it imparts a motion to
the awl, moving it out of the plane of the needle to the distance the length of stitch
requires. The awl then passes up through the work, and when through, is moved
back again to the plane of the needle, taking with it the work and also the under
presser foot which is pivotted to the same piece. The plate against which the
work is held is above it and the front edge forms a guide for the work. The before
mentioned presser foot keeps the work in position against this plate.
The looper for throwing the thread into the barb of the needle is actuated by
means of a lever from a cam on the back shaft. This lever is centered to the
frame and is cut into a segmental toothed rack which gears into a pinion which is
caused to describe half a revolution or more. This pinion has the looper pivotted to
it out of the centre, which looper consists of a rod sliding in a sleeve pivotted to
enable it to turn in any direction.
When the pinion revolves, it carries the back end of the looper with it; and the
free end of the same by means of the sliding in the sleeve, and the turning on the
centre, is caused to describe a motion similar to the pivotted end, and being placed
in a proper position with regards to the needle, and having an eye at the end
through which the thread is led it throws the thread into the barb of the needle
when it has penetrated the work.
The needle returns with the thread through the work pulls it up above the
surface and returns leaving a loop, through which the next loop is drawn, thus
forming the stitch.
The cast off embraces the needle and is lifted at the top of its stroke to allow of
the loop escaping.

page_text: OI PITIVATION.
Improvements connected with Boot and Shoe Soleing Machinery.
We, MARK CHARLES DENNE, of 1 Christchurch Road, Eastbourne, in the
County of Sussex, and THOMAS JAMES DENNE, of Hemel Hempstead, in the
County of Hertford, Engineers, 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 has for object, certain improvements connected with boot and
shoe soleing machinery, in which a barbed needle, an awl, and a looper are
employed.
In order that my invention may be thoroughly understood, I annex the
accompanying sheet of drawings, in which
Figure 1 is an elevation, with the side removed, of a machine made according to
my invention.
Figure 2 is a plan of the same.
Figure 3 is a front elevation.
Figure 4 is a front sectional elevation through the line 1-2, Figure 1; and
Figures 5, 6, 7, and 8 are detail views of the cast off, needle disc, awl carrier, and
presser foot respectively.
The needle carrier is a disc A to which the needle B is secured, and which has a
vibratory motion round a horizontal shaft C in the front of the machine. The
motion is imparted to it by an eccentric D and rod E from a back shaft F parallel
with the above mentioned shaft.
The awl carrier G is a similar disc to the above, which carries the awl H in a
reversed position with respect to the needle and so that both the needle and awl
move in the same plane, when the feed is not in action. This disc is included along
with the needle disc in the fork I at the end of the eccentric rod E.
The feed is obtained by means of a lever J moving in a horizontal plane, one
end K of which is engaged in a cam L, and the other works between two collars on
the boss of the above mentioned awl carrier. The cam is so arranged that when
the needle is passing through the work following the awl point to point, it imparts
a motion to the awl, moving it out of the plane of the needle to the distance the
length of stitch requires. The awl then passes up through the work and when
through is moved back again to the plane of the needle, taking with it the work,
and also the under presser foot M which is pirotted to the same piece. The plate N
against which the work is held is above it, and the front edge P forms a guide for
the work. The before mentioned presser foot M keeps the work in position
against this plate.
The looper Q for throwing the thread into the barb of the needle is actuated
preferably by the following means. A lever R attached to and projecting from the
eccentric rod E pushes against the pillar S moving the looper forward, and at
the same time it is caused to describe a circular motion at its front end by pivotting
the looper at Q in a slot a to allow of the forward motion, and moving the back
end transversely by the pivotted bell crank T having a roller bearing against a
face cam c fixed to the back shaft. The needle being pushed through the work,
the looper Q is given a combined forward and circular movement by the
projection R, bell crank T sliding in angular slot d, Figure 2; the roller b being
at this time opposite the recessed portion of the cam c, into which it is pulled by
the spring e, so that the front end of the looper being placed in the proper position
with regard to the needle and having an eye f, through which the thread passes, it
throws the thread into the barb of the needle. The needle returns through the
work, drawing the thread up above the surface and returns, leaving a loop through
which the next loop is drawn, and in this manner forming the stitch.
Instead of operating the looper in the manuer described above, I may operate it

page_text: by means of a lever from a cam on the back shaft. This lever is centred to the
frame, and is cut into a segmental toothed rack which gears into a pinion caused
to describe half a revolution or more. This pinion has the looper pivotted to it
out of the centre, which looper consists of a rod sliding in a sleeve pivotted to
enable it to turn in any direction. When the pinion revolves it carries the back.
end of the looper with it, and the free end of same by means of the sliding in the
sleeve and turning on the centre, is caused to describe the motion required for
throwing the thread over the barb of the needle.
The cast off V embraces the needle B and is lifted at the top of its stroke to
allow of the loop escaping by the rocking lever W riding over the inclined pro-
jection Y of the disc to which the cast off is fixed under the action of the spring y,
and is held in this position during a portion of the forward movement of the needle
by the cam X fixed to the back shaft F moving under the hinder end of the
lever W preventing any downward travel of the same so fixing the cast off until
the cam is clear of the lever when V is pulled down into the work by the
spring h. The cast off V is lifted at the proper moment by the stud i coming into
contact with the pin j of the cast off disc, see Figure 5.
The presser foot M can be moved away from the work against which it
presses
by pulling over the handle or lever & fixed to the cylindrical part 1, to which the
presser foot is attached, a spring m serving to keep the foot up to its work.
and
In order to compensate for any irregularities in the thickness of work under
operation, the pressure of the presser foot M is relieved twice during each revolu-
tion by the cams n, n, on the back shaft coming in contact with the roller
depressing the rocking lever q, releasing the catch from the segmental notched
piece s, and thus leaving the handle and presser foot to adapt itself to the thickness
of work then passing.
4
The movements of the various parts during one revolution of the back shaft is
as follows:-The back shaft is turned until the awl is in the same vertical plane
as the needle, and just entering the presser foot slot. The handle is then pulled
forward to lower the presser foot M sufficiently to allow of the insertion of the
work between it and the fixed foot and guide N, P, k is then let go and is
automatically fixed in the position required according to the thickness of the work
by means of the segmental toothed ratchets and the catch by its tooth pl
pressing upon the ratchets and acting as a pivot when the upper end of is
lowered by its spring the lower tooth then engages in the quadrant teeth
of s. The back shaft F is then rotated, causing the awl H to move over the arc
of a circle through the work when the various parts will be in the position shown
in the annexed drawings. The eccentric D and rod E having drawn the awl
through the work, and the needle back, as far as they will go, begin to return
the needle following the awl through the hole made in the work. When the
needle has nearly reached the end of its stroke, the cam on the back shaft shifts
the end K of the lever J over, and moves the sleeve and carrier G along the
shaft C a distance equal to the length of stitch required, a sufficient space being
allowed at the end of the shaft C and also in the fork I for this purpose. The
awl is now out of the plane of the needle, and although the back shaft continuous
to rotate, the awl and needle are at rest.
The needle carrier A and the awl carrier G are on the same pivot C but have
differential movements relatively to each other by reason of the slots 749 v, and
pint, the spring E' serving to keep the needle carrier in a backward position and
the spring G' the awl carrier in a forward position.
When the needle arrives at the extreme end of its stroke the eccentric D begins
to return but imparts no motion to the needle the pin t moving in the slot v. (the
Jost motion of both carriers is at the beginning of the return of their respective
strokes). The looper Q now under the combined action of the projection R, bell
crank T, slot d and cam c throws the thread upon the barb of the needle, which
then returns through the work drawing the thread after it and forming the loop.
The awl is at the same time piercing another hole through the work and as soon

page_text: as the needle is clear it is moved across by the lever J taking the work with it
until the awl is in the same vertical plane as the needle, which then descends
through the loop before mentioned following the awl in the manner before
described.
Having now particularly described and ascertained the, nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1: In a boot and shoe solcing machine the construction of the several parts
arranged as shown in the annexed drawings and operatable from a single revolving
shaft as and for the purposes set forth.
2. In a boot and shoe solcing machine, the employment of an eccentric on main
shaft for effecting the thrust and retiring motions of the awl' and of the barbed
needle.
3. Imparting differential movements to awl and needle for permitting thread to
be thrown around needle which is effected from an eccentric by means of the slots
and springs, as described.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Mark Charles Deune and Thomas James Denne.