Improvements in Embroidering-machines.
Year: 1898

page_text: Improvements in Embroidering-machines.
A communication from abroad by the Firm of ADOLF SAURER, of Arbon, Switzerland,
Machine Maker.
I, WILLIAM LLOYD WISE, of 46, Lincoln's Inn Fields, in the County of London,
Consulting Engineer and Chartered Patent Agent, do hereby declare the nature of
this invention to be as follows :-
This invention relates to improvements in shuttle embroidering machines and has
for object to increase considerably the accurate operation and the efficiency of such
machines and their parts.
It is well-known that in the shuttle embroidering machines heretofore ordinarily
employed, the arrangement of the driving meehanism has been such that in each
case the main driving shaft, which drives the various apparatus by means of suitable
actuating devices (eccentrics, wheels, etc.) is mounted longitudinally on the front of
the machine. This arrangement has many drawbacks, the chief one being that
access to the various apparatus and the manipulation thereof for the purpose of
regulation etc., are rendered very difficult, not only whilst the machine is in operation,
but also when the machine is stopped, because the shaft with its parts constitutes an
obstruction. Now, according to the present invention, this drawback is obviated by
arranging the main driving shaft (which drives the apparatus serving to effect the
usual embroidering) laterally to the machine.
The invention also relates to an improvement consisting in the arrangement of a
device for regulating the tension of the thread, and having for object to obviate, as far
as possible, when the thread guides are in the tension-position, the torsion of the
shaft of the small thread-guiße, which is produced by the tension of the thread and
which is so injurious. This torsion is obviously greatest at the free end of the
relatively thin shaft-i.e., the end thereof that is opposite to the end connected with
the actuating mechanism-so that, in consequence of the throwing back of the thread-
guide produced by the torsion, the tension in the respective threads is there
considerably diminished. Now in order to obviate this torsion of the shaft as much
as possible, the shaft is connected with a rod-arrangement which is subjected to the
action of an adjustable spring and which acts on the free end of the shaft. When
the spring is in tension, the elastic force of the spring acts in opposition to
or counterbalances the pull of the thread and consequently the torsion of the
shaft.
The invention finally relates to an improvement in suspending and actuating or
guiding the fabric-frame, which according thereto, is moveably supported by rollers
on which bears a bar fixed to the carriage, whilst the rollers themselves each run on
a rail which, like the counter-weights of the fabric-frame, is carried by straps that
are connected with levers or arms mounted on a shaft in such a manner that the
levers or arms, which are provided with arc-pieces, can guide the straps.
The accompanying drawings represent, sufficiently to illustrate the invention, an

page_text: embroidering machine embodying, by way of example, one way in which each of
the present improvements can be carried out.
Figs. 1 to 6 inclusive relate to the mechanism for driving the apparatus ;
Fig. 1 being a side elevation of the machine with the driving mechanism,
Fig. 2 a rear elevation of the machine with the mechanism for effecting the
movement of the shuttles,
Fig. 3 a side elevation of the machine showing more particularly the mechanism
by means of which the shuttle-operating mechanism is to be set for flat satin, or
triming stitching (hereinafter called flat-stitching) or for lock or chain stitching or
quilting, (hereinafter called lock-stitching).
Fig. 4 is an elevation taken at right angles to Fig. 3, and
Figs. 5 and 6 a side elevation and a plan of the mechanism for throwing the
machine out of operation.
Figs. 7 to 10 inclusive show more particularly the apparatus for regulating the
tension of the thread,
Fig. 7 being a front elevation thereof,
Fig. 8 is an elevation taken at right angles to Fig. 7,
Fig. 9 a plan corresponding to Fig. 7, and
Fig. 10 a section corresponding to the line x-x of Fig. 7, showing the thread-
guides and the rod-arrangement for compensating for the torsion of the shaft.
Figs. 11 and 12 show specially the apparatus for suspending and actuating or
guiding the fabric-frame, Fig. 11 being a front elevation and Fig. 12 a cross section
corresponding to the line 1-2-3-4-5-6.
The main driving shaft W is mounted laterally on the frames and preferably on
the left-hand side of the machine in bearing brackets s*. The arrangement is such
that all the apparatus that are employed for ordinary embroidering are driven directly
from this shaft without any intermediate gear by means of suitable actuating mechanism
such as linkwork etc.
For this purpose there are provided on the shaft suitable parts (eccentrics or cams)
for operating the said actuating mechanisms, one arrangement of which, shown by
way of example in the drawings, will be hereinafter described.
The drawings show
only the most important parts of these mechanisms and in places only the actuating
parts themselves, partly for the sake of simplicity and clearness and partly because
the arrangement of the constructive details is well known to the expert and is
immaterial to the invention.
First of all there will be described the driving of the needle-apparatus of the
machine, which has two working-levels, I and II (Fig. 1). The motion of the sliding
carriages which carry the needles n¹ and n² is taken from an annular or groove
eccentric or cam 2, which is mounted on a disc no on the front end of the shaft.
This eccentric or cam n³ acts upon a roller 8 mounted on the lower end of a rod n'
that connects the levers n³ ³ and n n of the sliding carriages and which is extended
beyond the joint.
For the purpose of operating the shuttle-actuating mechanism there are provided
two cam-discs e³ and e4, which are combined together and are fixed by means of a
supporting intermediate disc e² on a carrying disc e¹ that is fixed on the shaft W.
The former of these can-discs e³ is designed to drive the shuttles for embroidering
with lock-stitching, whilst the cam-disc et is designed to produce flat-stitching
embroidery. Co-operating with the respective cams of these discs e³, et is a roller g³
whose axle g is mounted in an oscillating bracket g¹ (Fig. 2) and which can be so
shifted that it can be operated either by the cam of the disc e³ or by the cam of the
disc e according to the kind of embroidery to be produced. The shifting of this
roller or of the axle 92 carrying it may be effected by means of a carrier-pin h, which
is also movable in the bracket g¹, and which can be shifted according to requirement
by means of a lever h¹ h² that is pivotally mounted on the frames and engages with
a stud-like projection ho of the pin h. This shifting may also be effected in a
mechanical manner, viz., by means of lateral projections 3, 4 which are provided on
toothed wheels i¹, and work against rollers h³ and h* mounted on the lever arms h¹

page_text: and h (Fig. 3). The bracket y¹ is mounted on a short shaft g, which is carried
rotatably in an eye fixed to the frame. The bracket carries on its upper end in
an eye g an upwardly directed ball-journal g, which engages in a joint-piece g
mounted on a horizontally guided bar g7. By the oscillation of the bracket g, which
is consequent on the action of the cam of the disc e³ or the cam of the disc et upon
the roller g³, the bar and therewith also through the medium of levers g8, 9º, g¹º,
the guide-rod g (which directly operates the shuttle-carriers) are moved to and fro
in the usual manner in accordance with the shape of the said cams (Fig. 2).
The thread-guides, o¹ and p² and the thread-roller q¹ are provided for the upper
working-level I of the machine, and the thread-guides o² and p2 and the thread-
roller q are provided for the lower working-level II. Of these thread-guides, the large
thread-guides p¹ and p which are mounted respectively on the shafts p³ and p
receive their respective motion or shifting in common from an eccentric or cam po
that is fixed on the driving shaft W, through the medium of linkwork p³, p, p, the
rod p' of which is continued downwards and carries in a fork a roller ps which bears
on the eccentric or cam 19 and is kept pressed against the latter partly by the pull of
the thread and partly by the weight of the rod. The small thread-guides o¹ and o2,
which are mounted respectively on shafts 3 and of and which are, shown, in the
loose position in Fig. 4 or 10, receive their tightening motion or shifting in common
from an eccentric or cam o mounted on the driving shaft, through the medium of
the linkwork 0, 0, 0, the rod o7 of which is prolonged downwardly past the joint
and carries a roller os, which bears on the periphery of the eccentric or cam and is
pressed against the latter by the pull of the thread and by the weight of the rod.
The prominence o10 of the eccentric or cam o acts as will be readily perceived, to
effect a shifting of the rods o o, o by which the thread-guides o¹ and o² are moved
into the position (in Fig. 4 or 10, towards the left hand) in which the thread-guides
keep the threads tight, whilst the other part of the periphery of the eccentric or cam
corresponds to the loose position of the thread-guides. The actuating link-
work o, o, o just described is arranged on the ends of the shafts o³ and o, which
are situated above the driving shaft W. In connexion with the other or free ends of
these shafts there is provided the rod-arrangement that serves to regulate the pull or
to compensate for or balance the torsion of the shaft and which comprises arms 71
and mounted on the shafts and connected together by a rod ³. Upon this rod 2-3
there acts a spring 7+, which can be put in tension by suitable mechanism. The
elasticity of the spring then acts through the medium of the rod-arrange-
ment 1,2, to produce upon the shafts o¹ and o² such force-moments as will oppose
the force-moments that are produced by the pull of the thread and act to twist the
shafts. By suitably tensioning the spring, the action of the pull of the thread upon
the shaft or the torsion of the latter can therefore be neutralized or balanced.
elasticity of the spring also aids that force-moment which is exerted upon the
shafts o³ and o in shifting the small thread-guides o¹ and o² from the loose position into
the tension-position by means of the aforesaid actuating linkword 0, 06, 07, as soon as
the roller os passes on to the prominence o10 of the eccentric or cam. By suitably
tensioning the spring, a spring tension can be produced such as will be equal to
the pull of the thread plus the weight of the linkwork 05, 0%, o in such a manner
that when the prominence has passed the roller, the roller 58 cannot be depressed
back on to the circular portion of the periphery of the cam, and therefore the roller
together with. the linkwork will float as it were, and thus keep the thread-guides o¹
and 2 constantly in the tension-position. The mechanism for tensioning the spring
which engages at one end on the rod 3 and at the other end on an arm 5 consists in
the arrangement shown of a pulling mechanism 20, 27, 28 with adjusting
mechanisın, 10 such that the spring can be fixed in its tensioned position at the
time being by means of a pawl 11 that is pivoted to the lever 210 and engages in a
toothed segment on the fixed adjusting piece 1.º.
The
For moving the cloth holders, there is provided eccentric or cam m which acts
upon a roller ms on the lower end of a rod m³ that engages with operating arms or
levers m³ and m* mounted respectively on the shafts m¹ and m² (Fig. 1).

page_text: Parallelly to the main driving shaft W and above the same there is arranged
another shaft W₁, which carries the parts that serve to effect the festoon-formation.
This shaft W can be driven from the shaft W by means of toothed gearing i, 21, 22,
of which the wheel is loose on the shaft W, a device being provided to enable this
wheel to be coupled with the shaft W for the purpose of transmitting the motion.
This device consists in a carrying pawl which is pivoted to a projection 26 of the
boss of the wheel i and which is adapted to engage with its nose 3 into a suitable
recess in the boss m³ of the adjacent eccentric or cam m' that is fixed on the shaft
(Figs. 3 and 4).
The movements of the needle-apparatus in the festoon or loop formation is
effected by means of an eccentric or cam f mounted on the shaft W₁ and which works
against a roller f¹ provided on the rod n (Fig. 1). The movements of the large
thread-guide in the festoon-formation is effected by means of an eccentric or cam k
which is mounted on the shaft W₁ and which works against a roller k¹ provided on
the rod p7 (Fig. 1).
To effect the vertical movement of the fork-apparatus there is provided an eccentric
or cam which is formed in one piece with the eccentric or cam or ; whilst the
eccentric is designed to produce the horizontal motion of the fork-apparatus
(Fig. 3).
The stopping-mechanisin is arranged in such a manner that the machine can be
stopped and started-that is to say, the belt can be thrown into and out of gear-
mechanically by means of the driving power itself. For this purpose the mechanism
is provided with a lever c¹, which is mounted so as to rock on an axle c and which is
provided on its upper and laterally bent end with a belt-fork c³ and is also provided
at its lower end with a lateral arm c2 on which is mounted a brake-block which,
when the lever c¹ is situated in the position required for throwing the machine out of gear
temporarily, is pressed against the outer peripheries of the discs e¹, e², es, et. The
movement of this lever c¹ is effected mechanically by means of a worm 68, when a
stud b, adjustably mounted on the lever c', is brought into engagement with the said
worin. The throwing of this stud into and out of engagement, and consequently the
throwing of the lever c' into operation, are effected by means of a special mechanism
consisting of a two-armed lever 66 65, which is mounted so as to rock on the lever c¹
and which engages the stud with its upper end; a rod 6+, which is pivoted to the
lower end of the lever 66 65 and which passes through a recess in the lever c¹; an
arm 63, which engages the rod b* and which is mounted on a shaft b; and a treadle
lever 61 62, which is mounted on the same shaft and by operating which the stud can
be thrown into and out of engagement.
The drawing represents the stopping-mechanism at the moment in which the gear
is thrown out of operation, that is to say, the belt-fork is situated over the loose
pulley a' but the stud 6' is situated in the engaged position so that as soon as a
locking-lever or detent c, which locks the lever c¹ and the fork c³ in the
disengaging position, is raised, the spring c7 which acts upon the lever c¹ and
is attached to the frame, will pull the lever c¹ so as to bring the belt-fork c³, together
with the belt, over on to the fixed pulley (. When this has been effected, the
shaft W will commence to rotate and therefore then the worm 68 acting upon the
stud 67 will move the lever c¹ completely and positively into the position for
engagement. The arrangement is made such that the machine will always stop at
the same time, viz.: when the needles are situated outside the material.
The two side frames s, s are connected at their upper ends by means of an |-shaped
girder 8'.
On this girder s¹ there are fixed bearing brackets 82 which carry a shaft s³.
The bearings of the brackets s² are constructed as ball-bearings. On the shaft, 83
there are mounted several arms each provided with an arc-piece. The two outer ones
of these arms viz.: st, st, point with their arc-pieces towards the back of the
embroidering-machine, whilst the other arms 85, 85, 85, 85 point, with their arc-pieces
towards the front of the embroidering-machine. The arms and so are each
provided behind their arc-pieces with a key s to which is attached by means of an
adjustable screw or bolt a carrying strap of steel which is placed around the arc-

page_text: piece of the corresponding arin. The carrying straps s7 of the levers 8 carry
counter-weights ss, which are guided on rods so that are provided on the side frames 8
of the machine. The two carrying straps t of each pair of arms 85 carry in common
a bar t. Upon each bar t¹ there is situated a roller 2. On the treads of the rollers ť²
there are situated short flat bars 3 which are fixed by means of bolts to the upper
cross beam of the fabric-frame of the machine. The fabric-frame t is provided at
the upper portions of its outer ends with vertical loop-shaped guide-pieces to through
which are placed guide-rods to that are carried by brackets 7 fixed to the side-
frames s. The lower cross beam of the fabric-frame t bears against guide-rods to,
which are carried by brackets that are fixed to the lower cross beam of the machine-
frame.
The point of support of the pantograph u is situated on a sliding carriage u¹,
which can be moved in a guide in one of the brackets 7 by means of a screw-spindle
furnished with a hand-wheel u², and can be fixed by means of a screw furnished with
a hand-wheel u³.
On the upper cross beam of the fabric-frame there is mounted a block V having
a slide guide. In this guide a sliding carriage v₁ can be moved up and down. The
sliding carriage vl has a longitudinal slot one side of which is formed as a toothed
rack. On the block is a pin with a small toothed wheel which is provided with
a hand-wheel 2 and which engages in the toothed rack of the slot of the sliding
carriage v. The pin mounted on the block v for the small toothed wheel having the
hand-wheel v², projects beyond the hand-wheel 2 and is formed with screw-thread
on which is a nut provided with a handle 3. The sliding carriage v¹ carries at its
upper end the point of operation w of the pantograph u.
The arms and mounted on the common shaft 83 constitute together rocking
levers, which are loaded at one end, by means of the carrying straps t, with the
weight of the fabric-frame t and at the other end, by means of the carrying
straps &, with the weights 88. The latter weights are made so large that they can
serve as counter weights for the carriage t'. In consequence of the fact that the
bearing brackets s² are provided with ball-bearings and that the carrying straps
bear upon the arc-pieces of the arms stand ", the up and down motions of the
fabric-frame t can take place quietly and entirely without shock. The length of
the carrying straps and t may be regulated by tightening up or slackening the
screws or bolts at the places of attachment & of the arins stand 8. The guide-
rods for the weights 88 are provided at their lower ends with impact-springs so
that shock is prevented when the fabric-frame t¹ moves too far. The vertical loop-
shaped guide-pieces to which are provided at the upper ends of the fabric-frame t¹,
through which the horizontal rods are inserted, and which are carried by the
brackets mounted on the side-frames 8, allow the fabric-frame t to execute to-
and-fro and up-and-down movements, whilst being securely guided. The lower cross-
beam of the fabric-frame is guided by the vertical guide rods t.
The fabric-frame t' is suspended by means of the short flat bars 3 secured by bolts,
on the treads of the rollers t2, which in their turn bear with their tread-grooves upon
the longer bars t¹ that are carried by the carrying straps t. This arrangement enables
the to-and-fro movement of the fabric-frame t' to take place quietly and with
certainty.
The point of support of the pantograph is situated on the sliding carriage u¹,
which can be moved, by means of a screw-spindle provided with a hand-wheel u²,
in a slide-guide formed in the bracket and which also can be fixed in position by
means of a screw provided with a hand-wheel u³. By this arrangement, therefore,
the point of support of the pantograph u can be shifted horizontally.
The point of operation w of the pantograph u, is situated at the upper end of a
sliding carriage v¹, which is guided in a slide guide of a block provided on the
upper cross beam of the fabric-frame t'. The block v carries a pin with the
small toothed wheel provided with a hand-wheel 2. This small toothed wheel is
situated in the longitudinal slot of the sliding carriage v and engages with the
teeth of one side of the slot in such a manner the sliding carriage v¹ can be moved

page_text: up and down in the block v by rotating the small toothed wheel by means of the
hand-wheel v². The pin of this small toothed wheel projects to a certain extent
beyond the hand-wheel v², and is provided with screw-thread, upon which works a
nut having a handle v³. By pressing this nut against the hand-wheel v² the
latter can be prevented from rotating and thereby the point of operation w of the
pantograph u can be fixed on the fabric-frame tt.
From the foregoing, it will be perceived that with the described construction of
the operating mechanism the fabric-frame can move in every direction quietly and
with certainty, and that the pantograph can be regulated with the greatest accuracy
both vertically and horizontally.
A communication from abroad by the Firm of ADOLF SAURER, of Arbon, Switzerland,
Machine Maker.
I, WILLIAM LLOYD WISE, of 46, Lincoln's Inn Fields, in the County of London,
Consulting Engineer and Chartered Patent Agent, 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 shuttle embroidering machines and has
for object to increase considerably the accurate operation and the efficiency of such
machines and their parts.
It is well-known that in the shuttle embroidering machines heretofore ordinarily
employed, the arrangement of the driving mechanism has been such that in each case
the main driving shaft, which drives the various apparatus by means of suitable
actuating devices (cams, wheels, etc.) is mounted longitudinally on the front of the
machine. This arrangement has many drawbacks, the chief one being that access to
the various apparatus and the manipulation thereof for the purpose of regulation etc.,
are rendered very difficult, not only whilst the machine is in operation, but also when
the machine is stopped, because the shaft with its parts constitutes an obstruction.
Now, according to the present invention, this drawback is obviated by arranging the
main driving shaft (which drives the apparatus serving to effect the usual em-
broidering) laterally to the machine.
The invention also relates to an improvement consisting in the arrangement of a
device for regulating the tension of the thread, and having for object to obviate, as
far as possible, when the thread-guides are in the tension-position, the torsion of the
shaft of the small thread-guide, which is produced by the tension of the thread and
which is so injurious. This torsion is obviously greatest at the free end of the
relatively thin shaft-i.e., the end thereof that is opposite to the end connected with
the actuating mechanism--so that, in consequence of the throwing back of the
thread-guide produced by the torsion, the tension in the respective threads is there
considerably diminished. Now, in order to obviate this torsion of the shaft as much
as possible, the shaft is connected with a rod arrangement which is subjected to the
When
action of an adjustable spring and which-acts on the free end of the shaft.
the spring is in tension, the elastic force of the spring acts in opposition to or counter-
balances the pull of the thread and consequently the torsion of the shaft...

page_text: The invention finally relites to an improvement in suspending and actuating or
guiding the fabric-frame, which, according thereto, is supported by rollers, on which
bears a bar fixed to the carriage, whilst the rollers themselves each run on a rail
which, like the counter-weights of the fabric-frame, is carried by straps that are
connected with levers or arms mounted on a shaft in such a manner that the levers or.
arms, which are provided with arc-pieces, can guide the straps.
The drawings filed with my Provisional Specification represent, sufficiently to
illustrate the invention, an embroidering machine embodying, by way of example, one
way in which each of the present improvements can be carried out.
Figs. 1 to 6 inclusive relate to the mechanism for driving the apparatus;
Fig. 1 being a side elevation of the machine with the driving mechanism,
Fig. 2 a rear elevation of the machine with the mechanism for effecting the move-
ment of the shuttles,
Fig. 3 a side elevation of the machine showing more particularly the mechanism by
means of which the shuttle operating mechanism is to be set for thickwork stitch
("Blattstich") or for running or outline stitch ("Steppstich "),
Fig. 4 an elevation taken at right angles to Fig. 3,
Figs. 5 and 6 a side elevation and a plan of the inechanism for throwing the machine
out of operation.
Figs. 7 to 10 inclusive show more particularly the apparatus for regulating the
tension of the thread,
Fig. 7 being a front elevation thereof,
Fig. 8 is an elevation taken at right angles to Fig. 7,
Fig. 9 a plan corresponding to Fig. 7, and
Fig. 10 a section corresponding to the line x x of Fig. 7, showing the thread-guides
and the rod-arrangement for compensating for the torsion of the shaft.
Figs. 11 and 12 show specially the apparatus for suspending and actuating or
guiding the fabric-frame, Fig. 11. being a front elevation and Fig. 12 a cross-section.
corresponding to the line 1-2-3-4-5-6-7-8.
The main driving shaft W is mounted laterally on the frame & transversely (as
shown) to the direction of the length of the machine, and preferably on the left-hand
side of the machine in bearing brackets &* The arrangement is such that all the
apparatus that are employed for ordinary embroidering are driven directly from this
shaft without any intermediate gear by means of suitable actuating mechanism such
as linkwork, etc.
For this purpose cams are provided on the shaft. for operating the said actuating
mechanisms, one arrangement of which, shown by way of example in the drawings,
will be hereinafter described. The drawings show only the most important parts of
these mechanisms and in places only the actuating parts themselves, partly for the
sake of simplicity and clearness and partly because the arrangement of the constructive
details is well known and is immaterial to the invention.
First of all there will be described the driving of the needle-apparatus of the
machine, which has two working-levels I and II (Fig. 1). The motion of the sliding
carriages which carry the needles n¹ and n² is taken from an annular or groove
cam n, which is mounted on a disc 10 on the front end of the shaft. This cam no
acts upon a roller m³ mounted on the lower end of a rod n that connects the
levers n³n and n n of the sliding carriages and which is extended beyond the
joint.
For the purpose. of operating the shuttle-actuating mechanism there are provided.
two cam-discs e and e', which are combined together and are fixed by means of a
supporting intermediate disc e² on a carrying disc e¹ that is fixed on the shaft W.
The former of these cam discs e³ is designed to drive the shuttles for embroidering
with thickwork stitch ("Blattstich "), whilst the cam disc et is designed to produce
running or outline stitch ("Steppstich"). Co-operating with the respective cams of
hese discs e, e is a roller g³ whose axle g2 is mounted in an oscillating bracket gl
Fig. 2) and which can he so shifted that it can be operated either by the cam of the
lisc or by the cam of the disc et according to the kind of embroidery to be produced..

page_text: -
The shifting of this roller or of the axle g² carrying it may be effected by means
of a carrier-pin h, which is also movable in the bracket g¹, and which can be shifted
according to requirement by means of a lever h¹ 2 that is pivotally mounted on the
frames and engages with a stud-like projection ho of the pin h.
This shifting may
also be effected in a mechanical manner, viz. by means of lateral projections ³, 24
which are provided on toothed wheels 2 and work against rollers h³ and he mounted
on the lever-arms h¹ and h² (Fig. 3). The bracket g is mounted on a short shaft g,
which is carried rotatably in an eye gº fixed to the frame. The bracket carries on its
upper end in an eye g an upwardly directed ball-journal 5, which engages in a
joint-piece mounted on a horizontally guided bar g7. By the oscillation of the
bracket g, which is consequent on the action of the cam of the disc e3 or the cam of
the disc e upon the roller g³, the bar 97 and therewith also through the medium of
levers go, go, go, the guide-rod g11 (which directly operates the shuttle-carriers) are
moved to and fro in the usual manner in accordance with the shape of the said cams
(Fig. 2).
The thread-guides o¹ and p¹ and the thread-roller q' are provided for the upper
working-level I of the machine, and the thread-guides o² and p2 and the thread-
roller q are provided for the lower working level II. Of these thread-guides, the
large thread-guides p¹ and p² which are mounted respectively on the shafts 3 and p
receive their respective motion or shifting in common from a camp that is fixed on
the driving shaft W, through the medium of linkwork p³, p, p, the rod p7 of which
is continued downwards and carries in a fork a roller ps which bears on the cam p
and is kept pressed against the latter partly by the pull of the thread and partly by
the weight of the rod. The small thread-guides o¹ and o², which are mounted
respectively on shafts o³ and ot and which are shown in the loose position in Fig. 10,
receive their tightening motion or shifting in cominon from a cam o mounted on the
driving shaft, through the medium of the linkwork 05, 0, 0, the rod o of which is
prolonged downwardly past the joint and carries a roller os, which bears on the
periphery of the cam and is pressed against the latter by the pull of the thread and
by the weight of the rod. The prominence 60 of the cam o acts as will be readily
perceived, to effect a shifting of the rods 05, 06, 07 by which the thread-guides o¹ and o²
are moved into the position (in Fig. 10 towards the left hand) in which the thread-
guides keep the threads tight, whilst the other part of the periphery of the cam
corresponds to the loose position of the thread-guides. The actuating link work o³, 0%, of
just described is arranged on the ends of the shafts o³ and of, which are situated above
the driving shaft W. In connexion with the other or free ends of these shafts there is
provided the rod-arrangement that serves to regulate the pull or to compensate for or
balance the torsion of the shaft and which comprises arms 1 and 2 mounted on the
sbafts and connected together by a rod 3. Upon this rod there acts a spring +*+,
which can be put in tension by suitable mechanism. The elasticity of the spring
then acts through the medium of the rod-arrangement 1, 2, 3 to produce upon the
shafts o³ and of such force-moments as will oppose the force moments that are
produced by the pull of the thread and act to twist the shafts. By suitably tensioning
the spring, the action of the pull of the thread upon the shaft or the torsion of the
latter can therefore be neutralized or balanced. The elasticity of the spring also aids
that force-moment which is exerted upon the shafts 03 and of in shifting the small
thread-guides o¹ and o² from the loose position into, the tension-position by means of
the aforesaid actuating linkwork 05, 06, 07, as soon as the roller 08 passes on to the
prominence 10 of the cam. By suitably tensioning the spring 4, a spring tension
can be produced such as will be equal to the pull of the thread plus the weight of the
linkwork os, oº, o' in such a manner that when the prominence has passed the roller,
the roller os cannot be depressed back on to the circular portion of the periphery of
the cam, and therefore the roller together with the linkwork will float as it were, and
thus keep the thread-guides o¹ and 02 constantly in the tension-position. The
mechanism for tensioning the spring which engages at one end on the rod 3 and at
the other end on an arm 5 consists in the arrangement shown of a pulling
mechanism 70, 77, 78 with adjusting mechanism r³, 10 such that the spring can be

page_text: fixed in its tensioned position at the time being by means of a pawl 11 that is
pivoted to the lever 10 and engages in a toothed segment on the fixed adjusting.
piece.
For moving the cloth holders, there is provided a cam m which acts upon a
roller me on the lower end of a rod that engages with operating arms or levers m³.
and m mounted respectively on the shafts m¹ and m² (Fig. 1).
Parallelly to the main driving shaft W and above the same there is arranged
another shaft W₁ which carries the parts that serve to effect the festoon-formation.
This shaft W¹ can be driven from the shaft W by means of toothed gearing i, 1, 2,
of which the wheel i is loose on the shaft W, a device being provided to enable this
wheel i to be coupled with the shaft W for the purpose of transmitting the motion.
This device consists in a carrying pawl which is pivoted to a projection of the
boss of the wheel i and which is adapted to engage with its nose 28 into a suitable
recess in the boss m³ of the adjacent cam m that is fixed on the shaft (Figs. 3 and 4).
The movements of the needle-apparatus in the festoon or loop formation is
effected by means of a cam f mounted on the shaft W₁ and which works against a
roller provided on the rod n' (Fig. 1). The movements of the large thread-guide
in the festoon-formation is effected by means of a cam k which is mounted on the
shaft W₁ and which works against a roller k¹ provided on the rod p² (Fig. 1).
To effect the vertical movement of the festoon fork-apparatus there is provided a
cam which is formed in one piece with the cam k, whilst the cam is designed to
produce the horizontal notion of the fork-apparatus (Fig. 3).
The stopping-mechanism is arranged in such a manner that the machine can be
stopped and started-that is to say, the belt can be thrown into and out of gear-
mechanically by means of the driving power itself. For this purpose the mechanism
is provided with a lever c¹, which is mounted so as to rock on an axle c and which is
provided on its upper and laterally bent end with a belt-fork c3 and is also provided
at its lower end with a lateral arm c² on which is mounted a brake-block which,
when the lever c¹ is situated in the position required for throwing the machine out of
gear temporarily, is pressed against the outer peripheries of the discs e, e², e³, et.
The movement of this lever c is effected mechanically by means of a worm b³, when
a stud b', adjustably mounted on the lever c¹, is brought into engagement with the
said worm.
The throwing of this stud into and out of engagement, and consequently
the throwing of the lever c¹ into operation, are effected by means of a special
mechanism consisting of a two-armed lever 60 b, which is mounted so as to rock on
the lever c and which engages the stud with its upper end; a rod 6+, which is pivoted
to the lower end of the lever b6 65 and which passes through a recess c in the
lever c¹; an arm 63, which engages with the rod band which is mounted on a
shaft b; and a treadle lever 1 62, which is mounted on the same shaft and by
operating which the stud can be thrown into and out of engagement.
The drawing represents the stopping-mechanism at the moment in which the gear
is thrown out of operation-that is to say, the belt fork is situated over the loose
pulley a', but the stud 67 is situated in the engaged position so that as soon as a
locking lever or detent ce, which locks the lever c¹ and the fork in the disengaging
position, is raised, the spring c7 which acts upon the lever c¹ and is attached to the
frame, will pull the lever c¹ so as to bring the belt-fork c³, together with the belt,
over on to the fixed pulley a. When this has been effected, the shaft W will
commence to rotate and therefore then the worm 68 acting upon the stud 67 will
move the lever c¹ completely and positively into the position for engagement. The
arrangement is made such that the machine will always stop at the same time viz.,
when the needles are situated outside the material.
The two side frames 8, 8 are connected at their upper ends by means of an |-shaped
girder 8. On this girder s¹ there are fixed bearing brackets 82 which carry a shaft 8³.
The bearings of the brackets s² are constructed as ball-bearings. On the shaft &³ there
are mounted several arms each provided with an arc-piece. The two outer ones of
these arms, viz. 84 84, point with their arc-pieces towards the back of the embroidering-
machine, whilst the other arms 5, 85, 85, 85 point with their arc-pieces towards the
D
;

page_text: arm.
front of the embroidering-machine. The arms 8 and 85 are each provided behind
their arc-pieces with a lug se to which is attached by means of an adjustable-screw or
bolt a carrying strap of steel which is placed around the arc-piece of the corresponding.
The carrying straps 7 of the levers s' carry counter-weights s which are guided
on rods's that are provided on the side frames s of the machine. The two carrying
straps t of each pair of arins s carry in common a bar t¹. Upon each bar t¹ there is
situated a roller 2. On the treads of the rollers there are situated short flat bars t³
which are fixed by means of bolts to the upper cross beam of the fabric-frame t* of the
machine. The fabric-frame t* is provided at the upper portions of its outer ends with
vertical loop-shaped guide pieces to through which are placed guide rods to that are
carried by brackets t7 fixed to the side frames 8. The lower cross beam of the fabric-
frame bears against guide-rods ts, which are carried by brackets that are fixed to the
lower cross beam of the machine-frame.
'
The point of support of the pantograph w is situated on a sliding carriage u¹;
which can be moved in a guide in one of the brackets 7 by means of a screw-spindle
furnished with a hand-wheel u², and can be fixed by means of a screw furnished with a
hand wheel u³.
"On the upper cross beam of the fabric-frame there is mounted a block v having
a slide guide. In this guide, a sliding carriage v¹ can be moved up and down. The
sliding carriage v1 has a longitudinal slot one side of which is formed as a toothed rack.
On the block is a pin with a small toothed wheel which is provided with a hand-
wheel 2 and which engages in the toothed rack of the slot of the sliding carriage v1.
The pin mounted on the block v for the small toothed wheel having the hand-wheel v²,
projects beyond the hand wheel v² and is formed with screw thread on which is a nut
provided with a handle v³. The sliding carriage v1 carries at its upper end the pin w
forming the point of operation of the pantograph u.
The arms st and 85 mounted on the common shaft s³ constitute together rocking
levers, which are loaded at one end, by means of the carrying straps t, with the
weight of the fabric-frame and at the other end, by means of the carrying straps 87,
with the weights 88. The latter weights are made so large that they can serve as
counter-weights for the carriage . In consequence of the fact that the bearing
brackets &² are provided with ball-bearings and that the carrying straps bear upon
the arc-pieces of the arms s* and 85, the up and down motions of the fabric-frame t
can take place quietly and entirely without shock. The length of the carrying
straps sandt may be regulated by tightening up or slackening the screws or bolts
at the places of attachment of the arms s4 and 85. The guide-rods 89 for the
weights are provided at their lower ends with impact springs so that shock is
prevented when the fabric-frame moves too far. The vertical looped-shaped
guide pieces to which are provided at the upper ends of the fabric-frame t, through
which the horizontal rods to are inserted and which are carried by the brackets t
mounted on the side frames s, allow the fabric-frame t to execute to-and-fro and
up-and-down movements, whilst being securely guided. The lower cross beam of
the fabric-frame t is guided by the vertical guide rods ts.
The fabric-frame is suspended by means of the short flat bars to secured by
bolts, on the treads of the rollers t2, which in their turn bear with their tread-grooves
upon the longer bars that are carried by the carrying straps t. This arrangement
enables the to-and-fro movement of the fabric-frame to take place quietly and
with certainty.
The point of support of the pantograph u is situated on the sliding-carriage u¹,
which can be moved, by means of a screw-spindle provided with a hand-wheel u, in
a slide-guide formed in the bracket and which also can be fixed in position by
means of a screw provided with a hand-wheel u³. By this arrangement,
therefore, the point of support of the pantograph u can be shifted horizontally.
The pin w forming the point of operation of the pantograph a and situated at the
end of the arm thereof is connected to the upper end of a sliding carriage v¹, which
is guided in a slide guide of a block provided on the upper cross beam of the
fabric-frame t*. The block v carries a pin with the small toothed wheel provided with

page_text: a hand-wheel v. This small toothed wheel is situated in the longitudinal slot of the
sliding carriage and engages with the teeth of one side of the slot in such a
manner that the sliding carriage can be moved up and down in the block v by
rotating the small toothed wheel by means of the hand-wheel v². The pin of this
small toothed wheel projects to a certain extent beyond the hand-wheel v²,
and is provided with screw-thread, upon which works a nut having a handle v³. By
pressing this nut 3 against the hand-wheel 2 the latter can be prevented from
rotating and thereby the point of operation w of the pantograph u can be fixed on
the fabric-frame tt.
From the foregoing, it will be perceived that with the described construction of
the operating mechanism the fabric-frame can move in every direction quietly and
with certainty, and that the pantograph can be regulated with the greatest accuracy
both vertically and horizontally.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. In a shuttle embroidering machine, driving mechanism in which the main shaft
that drives the apparatus serving to effect the embroidering is mounted laterally to
the machine and transversely to the direction of the length of the same.
2. In a shuttle embroidering machine, driving mechanism according to the
preceding claim in which a second shaft, carrying actuating parts for forming festoons,
is arranged above the main driving shaft and parallel thereto.
3. In a shuttle embroidering machine a tension-regulating device in which, in
connexion with the shaft of a small thread-guide, there is provided a rod-arrangement
which is acted upon by a spring capable of being placed in tension and which is
connected with the free end of the shaft of this thread-guide (i.e., the end of the said
shaft that is opposite to the end connected with the actuating mechanism) so that
when the spring is in tension its elastic force is adapted to act in opposition to,
or counterbalance, the pull of the thread, and consequently the torsion of the
shaft.
4. In a shuttle embroidering machine a tension-regulating device in which the small
thread-guide shafts of the several working-levels are connected to a rod-arrangement
which is acted upon by a single spring capable of being placed in tension and is
connected with the free end of each of the said thread-guide shafts (i.e. with the end
thereof opposite to the end connected with the actuating mechanism), substantially
as and for the purpose set forth.
5. In a shuttle embroidering machine, a tension-regulating device according to
Claim 3 in which, for tensioning the spring, there is connected thereto a pull
mechanism provided with adjusting mechanism so that the spring can be fixed in its
tensioned position, substantially as set forth.
6. In a shuttle embroidering machine, a device for suspending and moving or
guiding the fabric-frame, in which the said frame is movably supported by rollers
upon each of which bears a bar fixed to the frame, whilst the rollers themselves each
run on a bar which, like the counter-weights of the frame, is carried by straps which,
together with the suspension straps of the counter-weights, are each in firm connexion
with arms that are fixed on a shaft and that are each provided with an arc-piece
on which one of the said straps is placed, substantially as set forth.
7. In a shuttle embroidering machine, a device for actuating or guiding the fabric-
frame, in which the said frame is provided at the top at each end with a vertically
arranged loop-shaped guide-piece through whose slot there passes a rod fixed
horizontally to the framing of the machine, the lower longitudinal beam of the fabric-
frame bearing against guide-pieces that are fixed vertically to the framing of the
machine, so that the frame is guided both laterally and also vertically up and down,
substantially as set forth.
8. In a shuttle embroidering machine, a device for actuating or guiding the
fabric-frame, in which the pantograph is secured to the framing of the machine by

page_text: means of its supporting centre of rotation so as to be horizontally adjustable, the said
centre of rotation being situated on a sliding carriage, which is capable of being
adjusted in a horizontal direction on a bracket on the framing by means of a screw
spindle, whilst the arm of the pantograph that engages with the fabric-frame is
capable of having its point of engagement adjusted vertically, the said arm being 5
jointed to a vertically adjustable sliding carriage, substantially as set forth.
9. An embroidering-machine constructed, arranged, and operating as herein before
described with reference to and shown in the drawings referred to.
Dated this 27th day of October 1898.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.