IMPROVEMENTS IN MACHINES FOR SOLEING BOOTS AND SHOES, and for Sewing other GARMENTS AND ARTICLES.” AND FOR SEWING OTHER GARMENTS AND ARTICLES
Year: 1873

page_text: LETTERS PATENT to Thomas James Denne, of Dingwall Road,
Croydon, in the County of Surrey, and Mark Charles Denne,
of Malpas Road, New Cross, in the County of Kent, for the
Invention of "IMPROVEMENTS IN MACHINES FOR SOLEING BOOTS AND SHOES,
and for Sewing other GARMENTS AND ARTICLES.”
AND FOR SEWING OTHER GARMENTS AND ARTICLES."
Sealed the 16th December 1873, and dated the 23rd October 1873.
PROVISIONAL SPECIFICATION left by the said Thomas James Denne
and Mark Charles Denne at the Office of the Commissioners of
Patents, with their Petition, on the 23rd October 1873.
:
We, THOMAS JAMES DENNE, of Dingwall Road, Croydon, in the
County of Surrey, and MARK CHARLES DENNE, of Malpas Road, New
Cross, in the County of Kent, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MACHINES FOR SOLEING BOOTS AND SHOES, AND
FOR SEWING OTHER GARMENTS AND ARTICLES," to be as follows:-
Our first improvement consists in making the upper part of the
machine movable to work round the horn or other shaped rest upon

page_text: which the article to be sewn is placed. The rest is a fixture on the plate
of the machine, but the upper part of the machine can be moved while
it is working.
Our next improvement consists in an arrangement for providing for
differences in the thickness of the materials to be sewn by a slide which
rests on the work in front of the needle, to which is attached a bell
crank working by means of a link and rocking lever, a centre or fulcrum,
nearer to or farther from the needle slide end of a lever, thereby altering
the relative lengths of the ends of the lever from the centre, the lever
at the same time being actuated by a crank which gives it a recipro-
cating motion. The result is that by the proportional arrangement of
the length of the arms of the bell crank and levers, the length of the
stroke of the needle slide is varied as required.
Our next improvement provides for the needle securing the thread
after passing through the material placed upon the horn or rest by fixing
the needle a certain distance from the centre of the slide, so that by
causing the slide to revolve any required distance the barb of the needle
shall catch the thread as it rises. At the same time the pressure is
taken off the presser foot to allow the work being sown to move with the
needle. The thread is led up through the rest through a tube, round
which there is a recess wide and deep enough for the needle to descend
into a required depth.
Our next improvement relates to a thread shield or cast off, which is
attached to the lower end of the needle slide free to move up and down
on it, a downward pressure is applied to the shield by a spring. Upon 2
the lower end of the presser foot a projecting stud is placed to retard the
descent of the shield to allow the loop to escape from the barb or hook
of the needle as it descends through the material sewn. The movement
backwards of the presser foot for the next stitch is timed to release the
shield from the stud on it to allow it to descend and enter the barb of
the needle as it rises with the next loop to prevent the barb coming into
contact with the loop already made.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas James Denne and Mark Charles Denne
in the Great Scal Patent Office on the 23rd April 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME; we, THOMAS
JAMES DENNE, of Dingwall Road, Croydon, in the County. of. Surrey;
and Mark CHARLES DENNE, of Malpas Road, New Cross; in tlie County.
of Kent, send greeting."
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Lettors Patent, bearing date the Twenty-third day of October, in the
year of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto us, the said Thomas James Denne and-
Mark Charles Denne, Her special licence that we, the said Thomas
James Denne and Mark Charles Denne, our executors, administrators,,
3 and assigns, or such others as we, the said Thomas James Denne and
Mark Charles Denne, our executors, administrators, and assigns, should
at any time agree with and no others, from time to time and at all
times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of
Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN MACHINES FOR SOLEING BOOTS AND SHOES,
AND FOR SEWING OTHER GARMENTS AND ARTICLES," upon the condition
(amongst others) that we, the said Thomas James Denne and Mark
Charles Denne, or one of us, our executors, or administrators, by an
instrument in writing under our, or one of our, or their, or one of their
hands and seals, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be per-
formed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that we, the said Thomas James Denne and Mark
Charles Denne, do hereby declare the nature of our said Invention,"
and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement thereof,
reference being had to the Drawings hereunto annexed, that is to
say:-
-
One of our improvements consists in an arrangement for providing for

page_text: differences in the thickness of the materials to be sewn, by a slide
which rests on the work in front of the needle, to which is attached a
bell crank working by means of a link and rocking lever, a centre or
fulcrum nearer to or further from the needle slide end of a lever, thereby
altering the relative lengths of the ends of the lever from the centre,
the lever at the same time being actuated by a crank which gives it a
reciprocating motion. The result is that by the proportional arrange-
ment of the length of the arms of the bell crank and levers the length.
of the stroke of the needle slide is varied as required.
Our next improvement provides for the needle securing the thread
after passing through the material placed upon the horn or rest by
fixing the needle a certain distance from the centre of the slide, so that
by causing the slide to move in a segment of a circle the required
distance the barb of the needle shall catch the thread as it rises. At
the same time the pressure is taken off the presser foot to allow the
work being sewn to move with the needle. The thread is led up
through a tube, round which there is a recess wide and deep enough
for the needle to descend into a required depth.
A thread shield or cast off is attached to the lower end of the needlo
slide which is free to move up and down on it; a downward pressure is
applied to the shield by a spring. Upon the lower end of the presser
foot a projecting stud is placed to retard the descent of the shield to..
allow the loop to escape from the barb or hook of the needle as it
descends through the material sewn. The movement backwards of the
presser foot for the next stitch is timed to release the shield from the
stud on it to allow it to descend and enter the barb of the needle as it
rises with the next loop to prevent the barb coming into contact with
the loop already made.
DESCRIPTION OF THE ANNEXED DRAWINGS.
Figure 1, plan; Figure 2, side elevation; Figure 3, end elevation;
Figure 4, apparatus for allowing for differences of thickness of material
being sewn Figure 5, apparatus for partially rotating needle slide
and needle on axis; Figure 6, plans and elevations of shield or cast off.
L
A, bed plate of machine; B, horn or rest; C, main shaft; D, presser
cam; E, cam for imparting a reciprocating motion in a segment of a
circle to the needle, the slide turning on its own axis; F, stitch cam;

page_text: G, needle slide; H, presser foot; I, presser lever; J, needle lever; :
K, bell crank; L, rocking lever;. M, sliding block in levers I and J ;.
N, connecting link; O, sleeve round needle slide; P, link connecting
sleeve with cam lever Q; Q, cam lever working in connection with
cam E and sleeve O; R, roller in cam E and fixed on lever Q;;
S, S¹, stitch levers; T, link connecting front lever S with presser foot H;
V, thickness slide; W, needle; ✗, handle for working machine;
Y, crank; Z, frame; a, shield or cast off; b, portion of presser
foot.
The machine is so constructed that it moves in a circular direction
alone or in conjunction with the work placed on the horn at the
discretion of the worker. Provision is made for the difference in the
thickness of the various materials to be sewn by the thickness slide V
resting on the top of the work, thereby moving the bell crank K,
rocking lever. L, and sliding block M in such a manner that:
the sliding block M will be adjusted so as to be the required distance:
from the needle end of the levers I and J, the same adjustment alters.
the length of the stroke of the needle slide, so that the point of the.
needle always rises a certain distance above the work placed in the.
machine, and at the same time regulates the height of the presser.foot
bearing upon the surface. Provision is also made for the needle
securing the loop after passing through the materials placed in the
machine by first placing the needle a certain distance from the centre of
the needle slide G, so that by causing the slide to revolve on its axis the
barb of the needle will as it rises come into contact with the thread.
This result is produced by cam E causing the sleeve O to move the
needle slide G by means of a stud and slot in the sleeve O and slide G,
so that both sleeve and slide shall reciprocate in a segment of a circle,
the slide G having at the same time an up-and-down motion. Pressure
is at the same time taken off the work to allow it to move with the
needle W; the needle after securing the thread and taking it up into the
work is made to return to its original position. The thread is led up
through a hole in the rest, round which is a recess to allow the needle
to descend to a required depth.
.
The shield or cast off a is placed on the lower end of the needle slide,
and kept at its lowest point by a small spring of any convenient shape.
Upon the lower end of the presser foot is placed a projecting stud b,
which stud retards the descent of the shield at a given time to allow the

page_text: loop to escape from the barb of the needle as it descends through the
materials, the movement backwards of the presser foot H being timed
to release the shield to allow it to descend and enter the barb of the
needle as it rises with the next loop, so preventing the barb coming in
contact with the loop already made.
:
Having now described the nature of the said Invention and in what.
manner the same may be performed, we declare that we claim,-
First. The appliances shown at Figure 4 of the annexed Drawings,. by
which different thicknesses of material can be conveniently sewn or
stitched, as set forth, whether such appliances be arranged in the
machine, described and shown, or to any other sewing machine capable
of being used in connection therewith.
:
Secondly. The arrangement of appliances shown in Figures 5 and 6,
in or by which a reciprocating rotating motion of the needle in the
segment of a circle is obtained, for the purpose set forth, such needle 1
being out of the centre of the needle bar or slide for the
purpose of
causing it to describe or travel over the arc of a circle for picking up or
taking hold of the thread.
Thirdly. We claim the employment of a needle in or to a sewing
machine needle slide or bar when out of the centre thereof, and when 2
such slide or bar moves upon its own axis to cause the needle to reci-
procate in the segment of a circle.
In witness whereof, we, the said Thomas James Denne and Mark
Charles Denne, have hereunto set our hands and seals, this
Twenty-third day of April, One thousand eight hundred and 2
coranter four