Improvements in Embroidery Machines.
Year: 1890

page_text: Date of Application, 28th July, 1890
Complete Specification Left, 28th Apr., 1891-Accepted, 25th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in Embroidery Machines.
I, RUDOLPH WEISS, of 139 Noel Street, in the Town of Nottingham, Engineer
do hereby declare the nature of this invention to be as follows :-
This invention is intended to be applied to embroidery machines in which series
of stitch making appliances operate upon the tissue which is stretched upon a
frame moved by pantograph, and it has for purpose to produce an improved
quality of embroidery.
The apparatus, subject of this invention, enables the operator or operators to
produce in each stitch that sort of tie or twist of the embroidering threads
which he desires, and the following is a description of the apparatus.
A stand or bracket is fastened to the framework of the embroidery machine
on that side on which the pantograph operator is, and it is constructed in such
a manner that the pantograph operator, or another attendant having the required
view of the pattern plate, can operate the apparatus for which the stand or
bracket serves as support. The stand bears a (short) shaft, to one end of which
is fastened a wheel or crank, which the attendant turns round according to the
requirements of the pattern; to the other cnd is fastened a spur wheel, or other
apparatus, which will transmit the movement, imparted by the attendant to the
crank, to a second (long) vertical shaft which is born by the stand or by brackets
fastened to some part of the embroidery machine frame. To the upper part of
the long vertical shaft is fastened a cog wheel or other appliance which will
transmit its movement to those parts of the machine which determine the
revolving round its own axis of every stitch making device of the top tiers of
the machine. To the lower part of the long vertical shaft is fixed a cog wheel
or other appliance which will actuate the bottom tiers of the machine in the same
manner in which the top tiers is actuated.
I intend applying my invention to embroidery machines which have an apparatus
for cording or braiding, such apparatus consisting partly of a shaft which stretches
along the machine and moves the cord holders or guides round the needle threads,
one such shaft, which I call cording traverse shaft, existing for each tiers of
needles.
Now when applying my invention to such embroidery machines, the vertical
shaft is given an up movement for the first stitch, a down movement for the second
stitch, up movement for the third stitch and so on. These up and down movements
are given by a cam on the main shaft and connections. The cording traverse
shafts have each fastened to their ends bevel wheels which engage with bevel
wheels on the long vertical shaft. This latter is turned by the attendant in the
manner described above. As the attendant however turns the vertical shaft only
according to the direction of the stitch a further movement of the cording apparatus
is required for the purpose of bringing the cord at the first stitch to one side of the
needle and at the second stitch to the other side of the needle, and so on, so that
the needle thread will attach the cord to the tissue. This reciprocating movement
of the cording apparatus is produced by the above mentioned up and down
movement of the long vertical shaft. The bevel wheels on this shaft, which engage
with the bevel wheels of the cording traverse shafts, have bosses in which are cut
groves or slots forming angle to the axis of the shaft. In the slots engage pro-
jections of or fixed to the shaft. The bevel wheels are held by brackets to prevent
their moving up and down.
The shaft being moved upwards for one stitch will turn the bevel wheel round
its axis and therefore the cord to one side of the needle, and the shaft being moved

page_text: downwards for the succeeding stitch will bring the cord to the other side of the
needle, this reciprocating or zigzag movement being done automatically, while at
the same time the attendant guides the apparatus so that the middle line of the
zigzag movement of the cord corresponds with the direction of the stitch.
The cog wheels on the long vertical shaft, which transmit its rotary movement to
the stitch making devices, are in the cording embroidery machine connected with
the vertical shaft in the same manner as the bevel wheels, that is by projections
on the shaft engaging in slots of groves of the cog wheels, but these slots are parallel
to the axis of the shaft, while the slots of the bevel wheels are in angle to it.
As it is advisable that the rotating movement of the vertical shaft be arrested at
certain parts of the revolution of the main shaft, I place a pulley or wheel on the
vertical shaft or another shaft connected with it, and let a brake be applied to the
pulley, such application being directed by a cam on the main shaft and by a
spring.
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COMPLETE SPECIFICATION.
Improvements in Embroidery Machines.
I, RUDOLPH WEISS of 139 Noel Street, in the Borough of Nottingham,
Engineer, 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 further improvements in cording or "braiding"
apparatus (such as described in the Specification of my application No. 8669
dated June 4th 1890) employed in embroidery machines in which series of needles
produce corresponding designs on a tissue secured to a frame which frame is moved
by a pantograph and it has for its object the production of an improved quality of
embroidery.
It will be best understood by reference to the accompanying drawings in which
Figure 1 is a front elevation and
Figure 2 a side elevation showing my invention, parts only of the embroidery
machine being shown.
The invention as described and shown is applied to an embroidery machine with
two tiers of needles the cording or braiding devices in each tier being operated by
a longitudinal shaft I. Motion is imparted to the shafts I by a shaft R sliding in
the sleeves R' of the bevel wheels R2 and the sleeve R³ of the worm wheel R the
bevel wheels R³ are in gear with the wheels R³ secured to the shafts I and are
carried in the bracket bearings Rª secured to the framing S by their sleeves R¹
and held in position by the collars R' secured thereto. The worm wheel R is
carried by its sleeve R in the bracket bearing RB secured to the framing S and is
held in position by the collar R, the shaft R is provided with feathers R engaging
with keyways in the sleeves R' of the wheels R, and it is also provided with a
projection R working in a cam groove R2 in the sleeve R³ of the worm wheel R
as shown in dotted lines in Figure 2.
When the shaft R is reciprocated longitudinally the cam groove R in the
sleeve R³ will impart to it a rotary reciprocating movement which will be trans-
mitted to the shafts I by the wheels R, R and consequently to the cording guides,
and by turning the sleeve R³ the position in which the cord guides reciprocate can
be altered as desired.
The shaft R is reciprocated longitudinally by a lever T pivotted at its outer
end T to the bracket T secured to the framing and connected by the fork Tat
its inner end to the shaft R as shown, the lever may be actuated by a cam or as
shown by a spur wheel T provided with a crank pin T working in the sliding

page_text: block T of the lever T, the spur wheel T' works on a fixed pivot or shaft T7 and
is in gear with a pinion Ts secured to the main shaft To from which it receives its
motion.
The sleeve R and worm wheel R' are turned preferably by a worm U in
engagement with the latter, secured on the shaft Ui carried in the bearings U³
secured to the framing V which may also support the pattern board V. A shaft U³
is carried in the bracket bearings U secured to the framing V and is connected to
the shaft U by wheels U, U. Secured to the shaft Us is a worm U7 engaging
with a worm wheel Us turning on a pivot or shaft secured to the framing V and
provided with a pointer U which indicates the position of the centre of the path in
which the cord guides will reciprocate.
The shaft U is turned by the pantograph operator or an additional assistant by
means of the crank handle a secured to a short shaft a' carried in the bearing a²
secured to the framing V, and secured to the inner end of which shaft is a bevel
wheel a³ gearing with a similar wheel at secured to the shaft U³.
When the handle a is turned the sleeve R³ and pointer U will receive a similar
movement and by looking at the pointer the operator will see in what position
the cord guides are reciprocating, the position of the cording guides is determined
by the direction of the stitch and as each stitch is made by the pantograph the
pointer is turned so as to always point in the direction in which the stitch is to
be made.
.
By this means it only necessary for the cording guides to reciprocate through
a short arc instead of a complete revolution as. heretofore and by the use of the
governing movement the cord will always be laid alternately on each side of the
needle and be secured by the needle thread. By using a cording device with a
short movement the position of which is determined by the direction of the stitch
the cording guide always bears the same relation each stitch to the direction of
that stitch that is in front of it and the cord is thus always in tension when the
stitch is made thus producing a superior class of work.
By operating the cording guides by means of the governing movement only, that
is changing the position of the cord or braiding guides each stitch according to
the direction of that stitch, the cord or braid will be laid each stitch in the path
of the needle and secured to the tissue by stitching through it, this arrangement
is more especially applicable for braiding purposes the braid being, preferably
secured by stitching through the centre of it, and thus by the combined movement
of the pantograph and the governing movement the pattern followed by the
pantograph is braided in multiple on the tissue.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
1 claim is
1. A multiple embroidery machine in which the position of the cording or braiding
guides is capable of regulation according to the direction of each stitch substantially
as described.
2. In an embroidery machine such as described the combination with the
cording-or-braiding-device-operating-shaft of mechanism for regulating the position
of the cording or braiding guides substantially as described.
3. In an embroidery machine such as described the combination with the
cording-or-braiding-device-operating-shaft of mechanism for imparting motion to
the said shaft and mechanism for governing that motion substantially as described.
4. In an embroidery machine the combination with a longitudinally reciprocating
shaft such as R of a cam sleeve such as R³ the position of which is adjustable
substantially as and for the purpose described and illustrated in the accompanying
drawings.
5. In an embroidery machine the combination with a cam sleeve such as R³ of an
indicator such as U and means for actuating both simultaneously substantially as
described and illustrated in the accompanying drawings.

page_text: 6. In an embroidery machine the combination with the cording-or-braiding-
device-operating shaft of a reciprocating shaft such as R and cam sleeve such
as R³ substantially as described and illustrated in the accompanying drawings.
7: In an embroidery machine the combination and arrangement of parts for
imparting reciprocating motion to the cording-or-braiding-device-operating-shaft
and means for governing such movement substantially as described and illustrated
in the accompanying drawings.
RUDOLPH WEISS.
W. P. Thompson & Boult,
Agents for the Applicant.