Improvements in Embroidering Machines.
Year: 1891

page_text: Date of Application, 25th Aug., 1891
Complete Specification Left, 13th Apr., 1892-Accepted, 18th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in Embroidering Machines.
We EMILE CORNELY and ROBert Cornely, of the firm of E. Cornely
and Sou, of 87, Faubourg St. Denis, Paris, France, Manufacturers of Sewing
Machines, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in embroidering machines.
In the Specification to Letters Patent No. 2597 of May 24th 1883 a mechanism
is described and claimed in which a revolving thread carrier, b, winds its thread
around the needle and at the same time can be governed during its revolutions by
means of a crank handle S, so as to follow the direction of the universal feed of
the machine. The same mechanism described in said Specification can also be
employed for the purpose of producing a serpentine or cross stitch by imparting
to the thread carrier b, an oscillating motion so that it will lay its thread alternately
to the right and to the left behind the needle, which will then fix said thread to
the material by means of the chain stitch.
The invention will be understood by reference to
and to the drawings accompanying the Specification to
of 1883.
the following description
Letters Patent No. 2597
In the said Specification, the grooved cam F operates the levers C, E in such
a manner that its two single cam grooves impart to the levers C, E a reciprocating
motion forward and backward at each turn of the shaft D, which is transmitted to
the cranks 4 and 8 by means of the sleeves M, I and the pitmans 7 and 10 so as
to impart to said cranks a continuously rotary motion.
Instead of using two single cam grooves on cylinder F, as above described, we
use two double-crossed cam grooves which impart to the levers C, E a forward
motion at one turn of shaft D, and a backward motion at the next turn of said
shaft. Further, the length of the stroke of the levers C, E is calculated so that it
will be shorter than the diameter of the crank motion of cranks 4 and 8, which
will thus only make part of a turn and will oscillate on their shaft w, will follow
the movements of the levers C, E and will communicate their motion to the thread
carrier b, which will thus swing around forward at one turn of the machine and
backward at the next following turn, laying at each motion its thread behind the
needle to produce the serpentine or cross stitch.
It is evident that the diameters of the different pinions described in Specification
to Letters Patent No. 2597 of 1883 must be made of the precise size so that the
thread carrier b, may properly perform its operation and that it may also be truly
guided by the crank handle S, to follow the direction of the universal feed by the
mechanism described in Specification No. 2597 of 1883, which need not be changed
in its construction but only in the size of some parts.
For the production of the serpentine or cross stitch the bobbin G can be
dispensed with and a bobbin can be employed on the top of the machine in the
same manner as on braiding machines; its thread can be passed through the central
tube of the machine and through a passage in the nipple tube and thence through
the eye of the thread carrier b; consequently one double crossed cam groove on
cylinder F, acting upon lever E, sleeve M, pitman 10 and crank 8 will as effectually
perform the operation as the two cranks, and will simplify the construction of the
machine when intended for producing the serpentine or cross stitch only.
By means of an auxiliary shaft which makes half a turn to each turn of the
main shaft D, and by means of suitable transmission pinions the cam F will make
half a turn to each turn of the main shaft D, and can be employed with single
cam grooves in the same manner as those represented in Specification to Letters
D

page_text: Patent No. 2597 of 1883, and which will produce the same effect as the double
and crossed cam grooves described above.
Dated this Twenty-fifth day of August 1891.
For the Applicants,
W. E. GEDGE,
Agent.
COMPLETE SPECIFICATION,
Improvements in Embroidering Machines.
We EMILE CORNELY and ROBERT CORNELY, of the firm of E. Cornely
and Son, of 87 Faubourg St. Denis, Paris, France, Manufacturers of Sewing
Machines, 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 improvements in embroidering machines.
In the Specification to Letters Patent No. 2597 of May 24th 1883 a mechanism
is described and claimed in which a revolving thread carrier b, which winds its
thread around the needle can be governed during its revolution by means of a
crank handle S so as to follow the direction of the universal feed of the machine.
The same mechanism described in said Specification can also be employed with
some slight modifications for the purpose of producing a serpentine or cross
ornamental embroidery stitch by imparting to the thread carrier 6 an oscillating
motion so that it will lay its thread alternately to the right and to the left behind
the needle which will then fix the thread to the material by means of its chain
stitch.
In the accompanying drawings
Figure 1 represents a side view of our improved machine ;
Figure 2 represents in sectional elevation part of same embodying our present
improvements, drawn to a larger scale;
Figures 3 and 4 are detached views hereafter to be referred to.
Similar parts are designated with the same letters of reference with those used
in Specification to Letters Patent No. 2597 of 1883.
In the Patent No. 2597 of 1883 a grooved cam F actuates the levers C, E in
such a manner that its two single cam grooves impart to the levers C, E a
reciprocating motion forward and backward at each turn of the shaft D, which
motion is transmitted to the cranks 4 and 8 by means of the sleeves M I, and
pitmans 7 and 10 so as to impart to said cranks a continuously rotary motion on
their shaft w.
Instead of using two single cam grooves on cylinder F as above described we
use two double or even one double crossed cam groove on said cylinder which
impart to the two levers C, E or to one of them a forward motion at one turn of
the shaft D and a backward motion at the next turn of said shaft. Further, the
length of the stroke of the levers C E is calculated in such a manner that it will
be shorter than the diameter of the crank motion of the cranks and 8 which will
thus only make a part of a turn and will oscillate on their shaft w, which motion they
communicate to the thread carrier b which thus swings around the needle forward
at one turn of the machine and backward at its next following turn laying at each
motion its thread behind the needle to produce the cross stitch.
It is evident that one of the cranks 4 and 8 with its moving parts will be
sufficient to produce the oscillating motion of the thread carrier b, consequently
one double crossed cam groove on cylinder F acting upon lever E, sleeve M, and
pitman 10 and crank 8 will as effectually perform the operation as the two cranks
and will greatly simplify the construction of the machine when it is made for
producing the cross stitch. This latter disposition is represented at Figure 2.
In Figure 3 the cylinder F is secured to an auxiliary shaft N which makes half

page_text: It
a turn to each turn of the main shaft D by means of the transmission pinions a, d. In
this case the cylinder F may be employed with a single cam groove only which then
produce the same effect on the thread carrier b which is produced by the crossed
cam groove when the cylinder F is secured directly to the main shaft D. For the
production of the cross stitch the bobbin H which supplies the thread to the thread
carrier b, is set on a bobbin holder I' on the top of the machine and its thread
descends down through the central tube of the machine to the thread carrier b.
has been found, that for cross stitch work the bobbin H must be made as light as
possible in order to offer the least resistance in turning and to work thus with as little
tension as possible on its thread. We for this purpose employ a spool as represented
at Figure 4 composed of a central tube O, provided with shoulders g upon which the
flanges P are glued. These flanges are made of several layers of veneering glued
together with their grain laid crosswise so as to make them very light and strong.
It is evident that the different pinions of the machine must be disposed and arranged
in such a manner that the cross stitch work may be guided in conformity with the feed
by means of the crank handle of the machine as explained in prior Patents.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
The mechanisms for producing the cross stitch work substantially in the manner
and for the purposes herein set forth.
Dated this Thirteenth day of April 1892.