Improvements in Machines for Embroidering Cloth and other Materials.
Year: 1896

page_text: Date of Application, 17th Mar., 1896
Complete Specification Left. 17th Dec., 1896-Accepted, 13th Mar., 1897
PROVISIONAL SPECIFICATION.
Improvements in Machines for Embroidering Cloth and other
Materials.
I ALEXANDER GASS of 17 College Street South in the City of Belfast Machine
Maker, do hereby declare the nature of this invention to be as follows:-
My invention has relation principally to the improved embroidering machine
described in the Specifications referred to in Letters Patent granted to me and
numbered 9582 of the year 1893.
My present invention consists in dispensing with the pawl levers as described in
the specifications above mentioned and in employing a pawl attached to each
extremity of a shaft placed across the carriage and in substituting for the lever arm
described in the same specifications a series of multiplying levers attached to the
shafts of the tensioning rod arms so as to communicate with the shaft carrying the
pawls and thereby to increase the sensitiveness of the tensioning apparatus and
reverse the carriage more quickly.
My series of multiplying levers consists of a short lever fixed on one shaft of the
tensioning rod arms and provided with an adjusting screw and a longer lever working
free on the same shaft and linked to a slotted lever fixed on the pawl shaft whereby
the pawls are made to engage the notched or toothed rails or reversing bars by a very
slight lift of the tensioning rods.
In order to reduce the momentum of the carriage as it returns to pass the needles
I employ a crank fixed upon the pinion of the revolving shaft thereof and having a
stud which drops into a cam or groove on the face of the composite wheel and is
carried down through the cam or groove towards the centre of the wheel thereby
gradually diminishing the motion of the carriage until it comes to rest. Then one
of the sides of the cam or groove being made shorter than the other disengages the
crank while the longer side again engages the stud and starts the carriage in the
opposite direction. I provide clutches so that the crank and pinion may be disengaged
when desired from the carriage shafts.
Where I employ friction cones or discs as I now prefer to do for driving the
carriages alternately in opposite directions I arrange the bell-crank lever to operate a
sliding bar having wedges to tighten and loosen the friction cones or discs alternately
by the aid of levers acting upon wedges on the face of the journal of the
driving shaft.
For the purpose of embroidering a web continuously throughout the whole or any
less portion of its length I provide vertical rollers attached by brackets at each end
of the machine to hold the web.
Dated this 16th day of March 1846
HUGH
HYNDMAN,
6 Chichester Street, Belfast, Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Embroidering Cloth and other
Materials.
I, ALEXANDER GASS of 17 College Street in the City of Belfast Machine Maker
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:-
My invention has relation principally to the improved embroidering machine
described in the Specifications referred to in Letters Patent granted to me and
numbered 9582 of the year 1893.
My present invention consists in dispensing with the pawl levers as described in the
specifications above mentioned and in employing a pawl attached to each extremity
of a shaft placed across the carriage and in substituting for the lever arms described
in the same specifications a series of multiplying levers attached to the shaft of the
tensioning rod arms so as to communicate with the shafts carrying the pawls and
thereby to increase the sensitiveness of the tensioning apparatus and reverse the carriage
more quickly.
My series of multiplying levers consists of a short lever placed on one shaft of the
tensioning rod arms and provided with an adjusting screw and a longer lever working
free on the same shaft and linked to a slotted lever fixed on the pawl shaft whereby
the pawls are made to engage the notched or toothed rails or reversing bars by a very
slight lift of the tensioning rods.
In order to reduce the momentum of the carriage as it returns to pass the needles
I employ a crank fixed on the pinion of the revolving shaft thereof and having a
stud which drops into a cam or groove on the face of the composite wheel and is
curved towards the centre of the wheel thereby gradually diminishing the motion of
the carriage until it comes to rest. Then one of the sides of the cam or groove being
much shorter than the other disengages the crank while the longer side again engages
the stud and starts the carriage in the opposite direction. I provide clutches so
that the cranks and pinions may be disengaged when desired from the carriage.
shaft.
Where I employ friction cones or discs, as I now prefer to do for driving the
carriages alternately in opposite directions I arrange the bell crank lever to operate a
sliding bar having wedges to tighten and loosen the friction cones
alternately by the aid of levers acting upon wedges on the face of the journals of the
driving shaft.
or dises
For the purpose of embroidering a web continuously throughout the whole or any
portion of its length I provide vertical rollers attached by brackets at each end of the
machine to hold the web.
And in order that my improvements may be better understood I shall now refer to
the sheet of drawings hereunto annexed, the same letters of reference being used to
indicate the same or corresponding parts shewn upon them as were used upon the
drawings annexed to the Specification of my original Patent for embroidering machines
No. 9582 of 13th May 1893.
Fig. I is an elevation of portion of the composite wheel and pinions shewn in
Fig. VII of the original drawings and shewing the cranks fixed upon the pinions and
furnished with studs which drop into cams or grooves on the face of the wheel.
Fig. II is an elevation of portion of the machine corresponding to Fig. VIII in
the original drawings and shewing the pawl, the end of the shaft placed across the
carriage to which the pawl is attached and the series of multiplying levers by which
the increased sensitiveness of the tensioning apparatus is obtained and the carriages
are more quickly reversed.

page_text: Fig. III is a plan corresponding with portion of Fig. IX in the original drawings
and shewing friction cones in place of bevel pinions, a sliding bar having wedges to
tighten and loosen the cones alternately and levers acting upon wedges on the face of
the journals of the driving shaft, and
Fig. IV is a side view of the sliding bar, and the wedges upon it.
d is the composite wheel having the pinions, e, and, e, and the saddles, e, and the
cranks, e, furnished with studs, e, as shewn and described in the original specifications
and drawings herein before referred to; d³ are the cams or grooves having a long and
a short side, one cam or groove being on each face of the wheel, d. Into each of
these cams or grooves, d³, alternately, one of the studs, e³, drops and is carried towards
the centre of the wheel, d, thereby gradually diminishing the motion of the carriage
with which it is connected until such carriage comes to rest, the smooth portion of the
wheel, d, coming under a saddle, e2, and keeping the pinion locked in position as
described in my previous Complete Specification; after which the shorter side of the
corresponding cam or groove, d³, disengages the corresponding crank, e³, and passes
over the stud, e, allowing the wheel, d, to continue its motion in the same direction
until the opposite cam or groove, d³, reaches the other crank, e³, when the longer side
thereof engages the stud, e, on that crank, e³, and starts the other carriage in the
opposite direction.
When this opposite crank, e is thus lifted out of its cam or groove, d³, the
pinion, e or e', to which it is attached engages the teeth of the wheel, d, coming into
contact with them and gives its carriage accelerated motion outwards.
On the stitch being completed and while the carriage is returning this stud, e',
drops again into its cam or groove, d³, and brings the carriage gradually to rest as
before, thus preventing shock to the machine by abrupt stoppage.
The clutches which I provide for disengaging the cranks and pinions from the
carriage shafts, when desired, are of ordinary form, placed at the back of the pinions
and worked by hand. p is the pawl, and s is the notched or toothed rail as shewn and
described in the said original specification and drawings; r is a rocking shaft which
I have substituted for the pivot or stud shewn and described as before mentioned and
which is placed across the carriage and carries a pawl, p, at each side of the
machine.
Upon this rocking shaft, r, I fix a short slotted lever, pl, attached by a link, p², to
a lever, p³, appended to the tensioning rod shaft and working free thereon, and
p is
a short lever or bracket pinched to the tensioning rod shaft and provided with an
adjusting screw by which the lift of the pawl p through the levers and link pl p² and p
is regulated. a. b. b and c are the driving shaft, spindle, bell crank lever and worm
shaft as shewn and described in the said original specification and drawings, and a¹ a
and a are friction cones or discs which I have substituted for the bevel pinions shewn
and described as before mentioned.
The bell crank lever 62 now operates a sliding bar 63 having a wedge at or near
each end to tighten or loosen the friction cones or discs a' and a² alternately in their
connection with the cone or disc a'. These operations are effected by the aid of the
lever & furnished with wedge-shaped teeth which engage with wedges as a on the face
of the journal a. When a wedge on the sliding bar passes from under the end of
the relative lever it presses the adjoining friction cone or disc a' or a² against the
cone or disc a' while the other lever is lifted to the top of the other wedge and
disconnects its adjoining cone or disc from the cone or disc a' and thus motions
to the right and left alternately are secured.
The vertical rollers herein before mentioned may be employed to hold a web to be
embroidered continuously throughout, and are attached to each end of the machine
by brackets in an ordinary way which does not require to be shewn in the
drawings.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I would have it to be
understood that I do not claim the exclusive use of multiplying levers links and

page_text: adjusting screws nor of composite wheels with cams or grooves and pinions with
cranks and studs nor of sliding bars levers and journals with wedges except where
the same are constructed specially and applied according to my invention, nor
do I claim the use of vertical rollers to hold a web or any of the separate mechanical
parts which are employed in the improved embroidering apparatus invented by me,
but I claim in embroidering machines such as I have indicated in my original
specification above mentioned.
1. The use of a series of multiplying levers, a link and an adjusting screw acting
upon a notched or toothed bar and constructed and employed substantially in the
manner and for the purposes herein before described and referred to and shewn on
the drawings hereunto annexed.
2. The use of a composite wheel having cams or grooves, and of pinions with
cranks and studs constructed and employed substantially in the manner and for the
purposes hereinbefore described and shewn in the drawings hereunto annexed.
3. The use of a sliding bar with wedges and levers acting upon the journals of the
driving shaft constructed and employed substantially in the manner and for
the purposes hereinbefore described and shewn in the drawings hereunto annexed.
4. The several arrangements and combinations of parts constituting my improve
ments in automatic embroidering apparatus, constructed actuated and employed
substantially in the manner and for the purposes hereinbefore severally described and
illustrated by the drawings hereunto annexed.
Dated this 16th day of December 1896
HUGH HYNDMAN,
6 Chichester Street, Belfast, Agent for Applicant.