IMPROVEMENTS IN SEWING AND EM- BROIDERING MACHINES
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by William Edward Gedge at the Office
of the Commissioners of Patents on the 31st January 1879. A communica-
tion from abroad by Emile Cornely, of Paris, France.
WILLIAM EDWARD GEDGE, of No. 11, Wellington Street, Strand, London, in
the County of Middlesex, Patent Agent. "IMPROVEMENTS IN SEWING AND EM-
BROIDERING MACHINES." A communication from abroad by Emile Cornely, of
Paris, France.
The present Invention relates to improvements in the details of the embroidering
machine for which Letters Patent were granted to me on the 27th of June 1877,
No. 2482.
The principal elements of the machine as described in the Specification to said
Letters Patent for producing several parallel chain stitches by means of several
needle hooks and one single thread have, remained unchanged, and I will therefor
describe the manner of operating said elements, such as established in the present
state of the machine. It will be evident however that other means may be
employed for operating said elements.
Figure 1 represents a top view or plan of the parts which produce the stitch,
consisting of the needle hooks A, the thread carrier C, the blades G, the pins D, E,
and the springs n, o.
The springs n, o, are secured to a bed plate p, shown in vertical section in
Figure 2, by means of screws, and cause a slight pressure on the plate p. The
pius D, E, of which I employ two on each side instead of one, as heretofore, are
pressed upward against said springs by the action of another spring, so that the
thread carrier C can freely make its course under the spring, laying its thread first
against the needle hooks A and then around the pins D, E. The upper end of the
thread carrier is provided with a projection, on which the spring n can bear when
the pius D, E, have descended without preventing the thread from issuing freely
from the mouth of the thread carrier C. The thread is thus laid between the
plate p and the springs n, o, and when the pins D, E, descend said springs hold the
loop which had been laid around said pins until the blades G in the forward move-
ment pushed in between the hooks A, which take hold of it, so that each hook
may pull its loop upward above the cloth and prevent any drop stitches.
The pins D, E, are secured to a small cylinder 17, which is screwed to the shaft 8
by means of the screw 18. The rod 8 is operated by the action of the main shafṭ

page_text: by means of the connection rod Z, described in the Specification to the above
mentioned Letters Patent,-and-represented at Figure 3, and which actuates the
--lever-arins-m-and-k-which-swing-on-the-center t, the arm ke bearing on pin u of
rod 8, and pressing it downward, and the spring 9 presses the shafts and the
pins D, E, upward when the lever arm k releases the stud u and rod 8.
The-rod-Z-passes-through-the arm-m, and is secured thereto by means of the
screw nuts 23; thus by adjusting said screw nuts the arm m can be shifted on
rod Z so that the arm / will attack the stud u sooner or later, and thus exercise
the same actions on the studs D and E.
The thread carrier C is secured to the pinion F, Figures 1 and 4, which receives
its motion from the main shaft of the machine through the vertical shaft P, which
operates crank U, pitman V, rack W, pinions 7 and 8, and pinion F, and thread
guide C.
The blades G are also actuated from shaft P in the following manner:- -Cam Q
is secured to shaft P, and imparts an oscillating motion to lever R, which turns on
its stud S. The friction roller 13 on the end of lever R is held in contact with
the circumference of cam Q. by the pressure of spring 10. Lever R drives rod T
and its blade G by means of the link 12. To make the length of the blades G
adjustable, so that the loops of thread which they push in between the hooks may
be longer or shorter according to the nature of the work, the link 12 is pivoted to
the eccentric stud 19 of shaft 14, Figure 5, which can be turned by means of the
button 15, and thus the blades G may be adjusted to come in contact with the.
needles sooner or later, and to supply them with more or less thread.
To ensure the perfect action of the cam Q and lever R, so that the latter may
always be in contact with the circumference of the cam, even when the machine is
driven at a high speed, the end of said lever R is provided with a counter cam 20,
against which at certain moments the studs 21 of cam Q bear, and thus ensure a
perfect and sure action.
Figure 6 represents an illustration of the seam made with the machine, showing
three chain stitches, which are interlaced together.
Figures 7 and 8 represent ornamental embroidering seams, which are obtained
by causing the one or both of the outside needles to make regularly drop stitches
each alternate stitch.
These drop stitches will be obtained by setting one or both of the outside needle
hooks in a position oblique or rectangular to the direction of the feed, as shown at
Figures 10 and 11, by loosening the spring or o, so that it will not press upon
the loop of thread wound around the studs E, Figure 1, by setting the blades G
backwards, so as to push little thread only between the hooks, and by making the
front stud E slightly longer than the rear stud. The seams thus produced are
highly ornamental, and may be employed on a great variety of work.