IMPROVEMENTS IN SEWING AND EMBROIDERING MACHINES
Year: 1881

page_text: LETTERS PATENT to William Edward Gedge, of No. 11, Wellington Street,
Strand, London, in the County of Middlesex, Patent Agent, for an Invention of
"IMPROVEMENTS IN SEWING AND EMBROIDERING MACHINES." A communi-
cation from abroad by Emile Cornely, of Paris, France.
"
PROVISIONAL SPECIFICATION left by the said William Edward Gedge
at the Office of the Commissioners of Patents on the 5th February 1881.
WILLIAM EDWARD GEDGE, of No. 11, Wellington Street, Strand, London,
in the County of Middlesex, Patent Agent, "IMPROVEMENTS IN SEWING AND
EMBROIDERING MACHINES." A communication from abroad by Emile Cornely, of
Paris, France,
The object of the present Invention is the production on universal feed machines
of a new ornamental embroidering seam obtained by the introduction of a second
thread, which is laid by an oscillating thread carrier under the seam of a universal
feed sewing or embroidering machine.
The great difficulty in attaining this object was to construct a thread carrier
which, during its oscillations around the needle and above the cloth, would at the
same time follow the direction of the universal feed, such as is imparted to the
machine by means of its crank handle.
On the accompanying two Sheets of Drawing,
Figure 1 (Sheet I.) represents an elevation of the machine with certain sections
showing the mechanisms in the interior.
Figure 2 (Sheet II.) represents a vertical section of the mechanism which drives
the oscillating looper, shewn in full size.
Figure 3 represents a horizontal section through the same.
Figure 4 represents a vertical section through line 2, 3, Fig. 2, and
Figure 5 represents a detached view hereafter to be referred to.
The mechanism, as shown in the accompanying Drawings, is applied to a
Bonnaz" embroidering machine, but it may equally well be applied to any sewing
or embroidering machine having a universal feed motion.

page_text: The general construction of said machine is so well known that a description
thereof is not deemed necessary. I therefore limit the same to the improvements
communicated to me as aforesaid.
B represents the main shaft of the machine to which the wheel K is secured. It
drives, by means of its oblique teeth, a similar horizontal wheel R, of double the
diameter of the former, whose shaft S turns in the bracket T.
The crank Q of shaft S drives the pitman U, and the slide block X, by means of
screw m and the slide X, receives thus a reciprocating rectilinear motion within its
way g in the bed plate Y.
The upper part of block X extends in a goose-neck-shaped prolongation, shown
in Fig. 4, and embraces, by means of its fork h, the collar n of a hollow shaft or
tube p, which is adjusted on shaft C, and which can thus slide longitudinally upon
said shaft.
The tube p is prevented from turning on shaft C by means of the small square
nut o, which is screwed to said shaft, and which is fitted within the interior square
hollow part of tube p, so that the latter will turn only with thaft C when a turning
motion is imparted to it by means of the crank of the machine.
An endless screw q is cut upon the prolongation of tube p; it works within a
corresponding screw nut of the tube E, which is also fitted on shaft C, and the
screw by its rectilinear motion imparts a turning oscillating motion to the tube
or hollow shaft E. This oscillating turning motion is transmitted through pinions
H, I, shaft m¹, and toothed wheels N, O, P, to the oscillating thread guide b, which
thus lays its thread around the nipple a and its needle one stitch to the right and
one to the left.
The universal feed motion of the machine is governed by means of the crank
handle F, Fig. 1, and is transmitted to the feed bar by means of the pinions
G, V, Z, and u, v, 1, 8, shaft C, and pinions t, D. When therefore shaft C is turned
the tube pand its screw q turn with it, and the latter turns the screw nut and
hollow shaft E, although the movements of the said screws continue, as above
described, and thus become a compound motion, consisting of the oscillations of
hollow shaft E, and the turning direction of crank handle F, all of which is com-
municated to the thread layer b, which thus is governed by the crank handle during
its oscillations around the needle, and thus causes it to cross its thread always in
the path of the needle, which is also governed by the crank handle, thus producing
the new ornamental seam, as described.
It is evident that certain modifications can be made in the arrangement of the
screw q and its screw nut. Thus, for instance, the screw q may be cut upon the
prolongation of shaft E, and the screw nut within the tube p.
Or an arrangement may be employed, as shown, Fig. 5, where a spiral groove
is cut in the hollow shaft E in which, a small guide roller d operates, which is
secured to tube p, and which, by the rectilinear motion of the latter, imparts an
oscillating motion to tube E.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Edward Gedge in the Great Seal Patent Office on the
26th July 1881.
WILLIAM EDWARD GEDGE, of No. 11, Wellington Street, Strand, London,
in the County of Middlesex, Patent Agent. "IMPROVEMENTS IN SEWING AND
EMBROIDERING MACHINES." A communication from abroad by Emile Cornely, of
Paris, France.
The object of the present Invention is the production on universal feed-sewing
or embroidering machines of a new ornamental seam which is obtained by the
introduction of a second, which is laid like a serpentine line under the upper
embroidering seam of said machine.
The great difficulty in obtaining this object was to conduct a thread carrier
which, during its oscillations around the needle and above the cloth, would at the
same time follow the direction of the universal feed, which is imparted to the
machine by means of its crank handle.
On the accompanying two Sheets of Drawing forming part of this Specification,-
Figure 1 (Sheet 1) represents an elevation of the machine with certain sections
showing the mechanism in its interior parts.
Figures 2 and 4 (Sheets 1 and 2) represent vertical sections in full size of the
mechanisms which drive the oscillating thread carrier.
Figures 3 and 5 (Sheets 1 and 2) represent horizontal sections of the same.
Figure 6 (Sheet 2) represents a cross section through line Y, Z, of Figure 4.
Figure 7 (Sheet 2) represents an enlarged plan of the new ornamental seam
obtained by the machine.
Similar letters of reference indicate similar parts in each of the Figures
respectively.
The mechanism represented in the accompanying Drawings is applied to a
"Bonnaz" embroidering machine, but it may be equally well applied to any
sewing or embroidering machine having a universal feed motion.
The general construction of the said embroidering machine being well known,
the present description is limited to the improvements communicated to me as
aforesaid.
B represents the main shaft of the machine, to which the wheel K is secured, it
drives by means of its oblique teeth a similar horizontal wheel W of double the
diameter of the former, whose shaft S turns within a bracket T.
The crank secured to shaft S drives the pitman U and the slide block X by
means of the stud m and the slide X obtain thus rectilinear reciprocating motion,
being guided in its way in the bed plate Y. The upper part of the block X
extends in a goose neck shaped prolongation, shown in Figure 6, and embraces by
means of its fork h the collar n of a hollow shaft or tube p which can slide freely
to and fro on the shaft C. The shaft C serves to transmit the direction of the feed
to the feed bar from the crank handle F by means of pinions G, V, Z, u, v, r, s,
shaft C, and pinion t and D, and when the crank handle F is turned the shaft C
turns in the same direction. The tube p, as above described, can slide freely on
shaft C, but during said sliding longitudinal motion it must turn with shaft C,
being coupled thereto by means of a small square nut o which is screwed to shaft C,
and which is fitted within the square hollow part of tube p.
An endless screw q, Figures 4 and 5 is cut upon the prolongation of the tube
and gears with a similar vertical gear screw I which is secured to the vertical
shaft m¹, and which latter drives the toothed wheel N, which in its turn drives
similar wheels O and P. The wheel P can turn freely upon the hub d of the
machine in which the nipple tube M and the needle bar c are guided, and the
thread carrier b is secured to the hub of the wheel P.
The operation of the above described mechanism is as follows:-The rotary
motion of the main shaft B'imparts said motion through wheel K to the wheel W

page_text: which makes half the number of revolutions to those of the former and imparts a
reciprocating motion to the sliding block X by means of shaft S, crank Q, and
pitman U; the sliding block X imparts the reciprocating motion to tube p and to
its screw q, which latter acts like a rack upon pinion I and imparts to the latter
an oscillating motion which is communicated to the thread carrier 6 by means of
shaft m and the wheels N, O, P.
:
Thus the thread carrier b lay its thread once to the right and once to the left at
each stich of the machine and produces a serpentine like stitch, is represented on a
large scale in Figure 7, and in which the unshaded lines represent the chain stitch
which is produced by the needle, and the shaded lines represent the second thread,
which is laid under it to the right at one stitch and to the left at the next, and
so on.
When the crank handle F is turned to direct the feed of the machine the shaft C
turns with it, and also its nut o, which imparts the same turning, motion to the
hollow shaft P and to its screw gear q which is transmitted to the screw gear I,
and finally to the thread carrier b. Thus it will be seen that the thread carrier b
receives a compound motion, one is an oscillating motion around the needle
imparted to it from main shaft B, and the other is a turning irregular motion
imparted to it from the crank handle F, and which latter makes it follow any of
its movements in the line of the universal feed while it swings in its oscillations
around the needle.
Figures 2 and 3 represent another arrangement based on the same principle, in
which the tube p is provided with a screw nut, within which the screw q of the
sleeve or hollow shaft E extends; when this arrangement is employed the pinion H
which is secured to sleeve E, operates pinion I of shaft m¹; and, finally, the second
thread carrier b, as above described... Instead of regular screw teeth a single spiral
groove may be cut into tube E, in which a pin or friction roller may operate,
which is secured to the interior of sleeve p and which will produce the same
motion and effect as the above described arrangements.
The thread for the thead carrier bis supplied from the spool A and is guided
through the central tube of the machine and a hollow part of the needle
bar c down into the nipple tube M, from which it passes through an aperture into
the thread guide and eye of the thread carrier b.
Having now described and ascertained the nature of the Invention communicated
to me as aforesaid, and in what manner the same is or may be performed.
:-
I claim as secured to me by the hereinbefore in part recited Letters Patent:-
Firstly. In combination with a universal feed sewing or embroidering machine,
a second thread carrier (b) oscillating above the cloth and around the needle, and
following in its oscillations the direction of the feed of the machine, substantially
as described.
Secondly. The hollow shaft or sleeve p having a longitudinal reciprocating
motion on the shaft C (which directs the feed of the machine) and imparting an
oscillating motion to a thread carrier (b) above the cloth by means of horizontal
or vertical screw gears or screw shafts, substantially as and for the purposes
described.
Thirdly. The combination of the wheels K, W, shaft S, crank Q, pitman U,
and slide-block X, with the hollow shaft p sliding upon shaft C, substantially as
and for the purposes described.
In witness whereof, I, the said William Edward Gedge, have hereunto set my
hand and seal, this Twenty sixth day of July, in the year of our Lord One
thousand eight hundred and eighty one.
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