Improvements in or relating to Embroidery Machines.
Year: 1893

page_text: Date of Application. 31st Aug., 1893
Complete Specification Left 30th June, 1994-Accepted, 25th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in or relating to Embroidery Machines.
We, HARRY CECIL SHELDON of 63 Long Row West, Nottingham, Engineer,
and WILLIAM LOCKWOOD, of Pilcher Gate, in the Borough of Nottingham,
Lace Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention relates more especially to multiple embroidery machines in which
cording or braiding guides are employed such as and operated in the manner
described in the Specifications of Letters Patent Nos. 8669 of 4th June 1890, 11770
of 28th July 1890, and 9760 of June 9th 1891, and its object is to impart to the
tissue framing an automatic movement for each stitch such movement being made
in any direction according to the pattern.
The direction in which the tissue framing is moved is changed by the attendant
simultaneously with and by the saine arrangement for giving the movement for
adjusting the position of the cord or braiding guides, so that the two movements
may always coincide and one attendant only is required.
In carrying out this invention the end of the pantograph arm which moves the
tissue framing is connected to a slide provided with a pointer which slide is carried
in front and simultaneously moved the requisite distance each stitch (according to
the length of stitch required) in any direction which direction is changed by the
attendant so as to follow an enlarged draft of the pattern which it is desired to
embroider and which pattern or draft is placed on the pantograph board in the
usual manner.
The slide is carried and is capable of moving vertically on a vertical shaft.or
slide provided with a screw which engages with a nut on the slide; this screw is
operated by a horizontal shaft preferably at the lower end carried in bearings
secured to a suitable framing and connected to the screw by suitable gearing, the
driving wheel on the horizontal shaft is provided with a feather key working in a
key-way in the latter so that it may move freely along the shaft when the vertical
slide is moved.
The vertical slide may be carried at its upper and lower ends by horizontal
screws carried in bearings secured to a framing carried round and also supporting
the pantograph board, these screws are both connected by bevel spur wheels to a
vertical shaft carried in bearings secured to the framing preferably on the inner
side of the pantograph board.
The slide carrying the pointer and to which the pantograph arm is connected is
moved in any direction by the combined movement of the horizontal and vertical
screws and its movement is communicated to the tissue framing by the pantograph
which may be of the usual construction.
The horizontal and vertical screws are rotated so as to move the slide to which
the arm of the pantograph is connected in the requisite direction for each stitch by
the following arrangement..
On the two shafts which communicate movement to the horizontal and vertical
screws respectively, are secured spur wheels preferably formed with fine teeth,
these wheels alternately engage and disengage with two racks formed with corre-
sponding teeth and arranged at right angles with each other, they are carried by
a casing which in turn is carried and moved in a plane parallel to that of the shafts
by preferably two universal cams, by means of which the casing and the racks may
be moved in any direction..
The two cams are formed by circular discs or sheaves which fit into corresponding
openings in the-rack casing, they are each carried on a radial slide secured to

page_text: .
transverse parallel shafts carried in bearings secured to a suitable framing on the
underside of the pantograph board.
The sheaves are moved on radial slides by levers pivotted centrally on brackets
secured to the shafts and one end of each is connected by a link or links to the
corresponding sheave; the free end of each lever is simultaneously operated by
cones sliding on the shafts which force the free ends of the levers outwards and
impart a corresponding movement to the sheaves which are thus moved into an
eccentric position carrying the rack casing with them. The sheaves may be
returned to their normal position, that is concentric with the shafts, by springs and
when in that position the sheaves may be turned by means of their shafts together
with their operating mechanism, if it is desired to move the racks in a different
direction for the following stitch.
The action of the racks which are placed at right angles, on the spur wheels
secured to the horizontal and vertical shafts connected to the screws, which shafts
are also at right angles, is as follows;-
When the universal cams are in such a position that the racks are moved in a
line parallel to one of the shafts no movement will be imparted to that shaft
as the teeth of the rack will move parallel to the axis of the shaft and to that of
the spur wheel, but the whole movement will be imparted to the other shaft and
the corresponding screw or screws, and the slide will be moved in a vertical or
horizontal line.
When the racks are moved in a line which is not parallel to either of the shafts
movement will be imparted to both shafts and both sets of screws and the slide
will move in a diagonal direction corresponding to the angle of the line of
movement of the racks. By this arrangement the movement of the universal cams
is communicated to the pantograph slide and the direction in which the slide is
moved may be changed by changing the position of the cams.
The cones for operating the cam levers slide on the shaft and may be connected
by a link or links to a lever provided with an anti-friction roller and operated by
a cam on the main cam shaft.
If preferred a link or lever motion may be employed instead of the sliding
-cones.
The shafts carrying the universal cams are shogged by a similar arrangement' to
that employed for operating the sliding cones so as to move the racks into gear
with the spur wheels when the universal cam sheaves are about to move from
their central position and throw them out of gear before they return to their
normal position.
In connection with the pointer on the pantograph slide is a second pointer
mounted on a sleeve so as to be movable round the fixed pointer; the position of
this pointer is adjusted with respect to the position of the cams and both are
connected to each other by a suitable arrangement of shafts and gearing operated
by means of a handle placed in a convenient position, so that the attendant may
follow the pattern on the board by adjusting the position of the movable pointer to
the draft or pattern at each stitch, or as required by the pattern which movement
will also adjust the universal cams.
The movement for adjusting the universal cam may also be communicated to
similar arrangements for adjusting the cording or braiding guides to those
described in the Specifications of Letters Patent cited. This arrangement consists
preferably of an epicyclic train of bevel wheels through which a continuous or
reciprocating motion may be communicated to the cording or braiding guides;
this train of wheels is arranged in a convenient position and the guides are adjusted
by moving a dead wheel in the train. This wheel may be connected by gearing
with the arrangement for adjusting the universal cam.
Dated this 21st der of Avonot 1902

page_text: The screws d are connected by bevel toothed wheels d³, d, d³, do to a vertical
shaft d' carried in bearings d secured to the framing 63 so that both screws d may
be rotated simultaneously and horizontal movement consequently imparted to the
vertical slide c c' and carriage a³.
The carriage a may be thus moved in any direction by the combined movements
of the horizontal screws d d and the vertical screw c and its movement is
communicated to the tissue framing by the pantograph which may be of the usual
construction.
The horizontal screws d d and vertical screw c³ are rotated so as to move
the carriage a² in the requisite direction for each stitch by the following
arrangement.
On the horizontal shaft c communicating motion to the vertical screw c³ is a
pinion e and on the vertical shaft d' communicating motion to the horizontal
screws d d is a second pinion el both pinions e e¹ being preferably of the same pitch
and formed with fine pointed teeth. These pinions are alternately engaged and
disengaged with two racks e e³ formed with teeth of a corresponding shape and
pitch to those on the pinions, the teeth of one rack being placed at right angles to
those of the other so as to correspond to the position of the pinions.
The two racks e³ ³ (see Figs. 3 and 4) are secured to the casing f of a compound
universal cain by means of which the racks ees are reciprocated in any direction in
a plane which is parallel to the axes of both pinions e e¹.
The casing of the compound universal cam is carried by two circular sheaves or
eccentrics capable of rotating within corresponding recesses in the casing f, and
the two sheaves f' are each mounted on a radial slide f³ on one of two horizontal and
parallel shafts. The shafts f³ are carried in bearings f* secured to a standard f
fixed to the base plate g which latter also carries the framing and the end
standard w of the machine.
Each sheave f' is simultaneously reciprocated on its slide f by a bell crank
lever pivotted at h¹ to a boss h², secured to one of the shafts f³. The end h³ of
each lever his connected to its corresponding sheave f' by double links * and the
ends are connected by double links he to bosses h rotating concentrically with
the shafts on a carriage 8 sliding on said shafts.
The carriage h³ is reciprocated on the shafts 3 by arms i provided with slots
which engage with pins secured to the carriage 8. The arms i are secured to a
shaft carried in bearings secured to the base plate g, and this shaft is
oscillated by an arm connected by a link i to an arm 10 secured to the shaft **
carried in bearings 7 secured to the standard f. The shaft is oscillated by an
arm is provided with an anti-friction roller in peripheral contact with a cam j¹
secured to the cam shaft j.
When the carriage 8 is reciprocated the sheaves f¹ are alternately moved into
an eccentric position carrying the casing and racks ee with them, and returned
to their normal position, that is concentric with the shafts f³, and when in the
latter position the sheaves f¹ may be turned by means of the shafts f³ together with
their operating mechanism, if it be desired to move the racks ee in a different
direction for the next following stitch.
The action of the racks e² e on the pinions e el is as follows;—
When the sheaves f¹ are so operated that the racks are moved in a direction
parallel to the axis of one of the pinions no movement will be imparted to that
pinion but the whole movement will be imparted to the other pinion and the corre-
sponding screw or screws d to which it imparts its motion, and the carriage a²
will consequently be moved in a vertical or horizontal direction.
When the sheaves f¹ are so operated that the racks e²e are moved in a direction
which is not parallel to the axis of either of the pinions e e' movement will be
imparted to both the vertical screw and horizontal screws d d and the carriage
will move in a diagonal direction corresponding to the angle of the direction of
movement of the racks with each pinion.
For example, if the racks are moved in a direction which is an angle of 45° with

page_text: the axis of each pinion, each pinion will be moved through the same space together
with the vertical and horizontal screws, and the carriage will receive equal
movement from both the vertical and horizontal screws and will be consequently
moved in a direction which is an angle of 45° with the screws.
This movement may be upwards to the left or right, or downward to the left or
right, according to the direction of motion of the sheaves f¹, and by changing the
direction of motion of the sheaves the direction in which the carriage a' is moved
is also changed a corresponding degree.
The racks e³ ³ are moved into gear with the pinions e-e preferably when the
sheaves f¹ are concentric with the shafts f' and held in gear until the movement
into an eccentric position is completed, the racks e³ ³ are then moved out of gear
during the return of the sheaves f¹ to their normal position. This may be effected
by shogging the shafts f³ longitudinally in their bearings.
For this purpose a plate k provided with bearings to fit loosely on both shafts
and held in position thereon by bosses k¹ secured to the shafts is connected by
links to a cam lever k³ pivotted at its lower end k to the base plate g, the upper
end of the lever k³ is forked or formed with two ends one on each side of the
cam shaft and each end provided with an anti-friction roller in peripheral contact
with cams kand k³ respectively secured to the cam shaft jone cam acting as a
counter cam to the other.
j
The two shafts f³ are connected by a vertical shaft carried in bearings l
secured to the standard * and helical gear wheels 12 13 secured to the shafts ƒ³
gearing with similar wheels secured to the vertical shaft.
The cording or braiding guides m (Figs. 1 and 2) are driven by a pinion m
Fig. 4 secured to the cam shaft j, toothed wheels m², m' and an epicyclic train
of bevel wheels m³ m' m' in the manner described in the Specifications of Letters
Patent hereinbefore referred to.
The dead wheel n in the epicyclic train is connected by helical gear wheels
(Figs. 3 and 4) m8 m² to the vertical shaft / so that as the position of the universal
cam sheaves are changed the position of the cording or braiding guides is also .
simultaneously adjusted by the corresponding movement of the dead wheel m³.
Reciprocating motion may be communicated to the guides m by oscillating the
wheel m by means of an eccentric, which may be secured to the shaft j or to one
of the wheels m³ m³ (the latter of which is in this case put out of gear with
wheel m) and connecting the eccentric strap to the wheel m¹ by a rod.
In connection with the pointer a³ on the carriage a² (see Figs. and 2) is a
second pointer n mounted on a sleeve n¹ and capable of rotating concentrically
round the pointer a³. The sleeve n³ is connected by helical gear wheels n³ n³ to
the shaft connected by bevel toothed wheels n n to a hand wheel nⓇ by means
of which latter the position of the pointer n is adjusted by the attendant.
The helical gear wheel n³ and the bevel wheel n' are mounted on a sleeve in
the carriage a² and sliding on the shaft c', said sleeve being provided with a feather
key engaging with a key-way in the shaft c¹.
The shaft c is connected at its lower end to a horizontal shaft o carried in
bearings o secured to the framing 68, by bevel toothed wheels o² o³, the latter of
which is provided with a sleeve rotating in a bracket of secured to the fixed shaft c
and with a feather key engaging with a key-way in the shaft o.
The shaft o may
be connected by gearing to the vertical shaft so that as the position of the
pointer n is adjusted to follow the pattern a corresponding adjusting movement is
imparted to the eccentrics or sheaves and guides m, but where a considerable
number of guides are employed and considerable power is required to adjust them
and the sheaves f', we employ the following arrangement ;-
The movement given to the shaft o by adjusting the pointer n is communicated
by the toothed wheels p p', shaft p³, bevel toothed wheels p³ p', shaft p³, and bevel
toothed wheels p p to a brake wheel g (Figs. 2, 5 and 6) on a fixed shaft g¹
carried in bearings secured respectively to a bracket på mounted on the base
plate g, and standard f.

page_text: The brake wheel q is provided with a second bevel toothed wheels secured to
its inner side, engaging with a bevel toothed epicyclic wheels which in turn
engages with a bevel toothed wheels secured to a sleeves on the shaft q'. The
sleeve is carried through the bearing (see Figs. 3 and 4) and at its inner end
is provided with a helical gear wheel engaging with a corresponding wheel st
secured to the upper of the shafts f³.
The epicyclic wheels (see Figs. 5 and 6) is pivotted radially in a disc t rotating
loosely on the shaft g' and when the brake wheel gq is rotated the epicyclic wheel s
will move round the shaft q' together with the disc t.
The brake wheel q is then locked by the brake band q and the epicyclic
wheel s¹ is returned to its normal position and the wheel s² is thus moved through
an augular space equal to that given to the brake wheel but in a reverse
direction, and such movement of the wheel is transmitted to the shafts and the
braiding guides m. This movement occurs in the interval between every stitch
and any alteration in the position of the pointer n on the carriage a² is immediately
communicated to the operating mechanism.
The epicyclic wheels is returned to its normal position by the following
arrangement. The disc t in which the epicyclic wheel is pivotted is provided at
one part of its periphery with teeth which engage with the teeth of a corresponding
disc t pivotted at t to the bracket p. The disc t' is provided with studs which
engage with the reciprocating arms to which, by their action on the studs t*, return
the wheel s¹ to its normal position every time it is moved therefrom.
The arms to are mounted concentrically with the pivot and are reciprocated
by links u connected to one end of the connecting rod u the other end of which is
journalled on the crank pin u² of the disc u³ secured to the shaft j.
The brake strap q' is operated so as to alternately lock and release the brake
wheel by a lever v pivotted at vl to an extension of the bracket p8 the lower end
of the lever is connected by a rod v³ to a lever v pivotted to a bracket secured
to the framing and provided with an anti-friction roller in peripheral contact with
a cam secured to the crank disc u³.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we.
claim is ;-
1. A multiple embroidery machine in which the tissue frame is automatically
moved for each stitch and in which the direction of such movement may be
changed as required to follow a pattern simultaneously with the adjustment of the
cording or braiding guides or the like substantially as described.
2. A multiple embroidery machine in which the pantograph arm a is connected
to a carriage such as a² automatically moved for each stitch in any direction
predetermined by the operator substantially as described.
3. The method of imparting universal feed movement to the carriage a by
means of universal cam racks e² e pinions e e' and screws o³ d d substantially as
.described.
4. In an embroidery machine the combination with a universal cam of racks such
as e² eª set at right angles to each other and pinions e e¹ engaging with the said
racks substantially as described and illustrated in the accompanying drawings.
5. In an embroidery machine the combination with a universal cam of racks
such as ee pinions e e¹ and screws c d d for imparting universal movement to
the carriage a² substantially as described and illustrated in the accompanying.
drawings.
6. In an embroidery machine the combination and arrangement of parts.
constituting the universal cam for giving universal movement to the racks e e
consisting essentially of a casing such as sheaves or eccentrics f¹ carried on radial
slides shafts f³ bell crank levers and carriage 8 sliding on the shafts ƒ³
substantially as described and illustrated in the accompanying drawings.
7. In an embroidery machine the combination with a carriage such as a² and

page_text: fixed pointer a³ of a pointer n moving round the fixed pointer a³ and connected
with and indicating the position of the universal cam and cording or braiding
guides substantially as described and illustrated in the accompanying drawings.
8. In an embroidery machine the combination with a carriage such as a' and
fixed pointer a³ of a movable pointer n connected to an adjusting wheel or
equivalent n substantially as described and illustrated in the accompanying
drawings.
9. The combination and arrangement of parts for transmitting the movement
given by the operator to the pointer n to the universal cam and cording or braiding
guides consisting essentially of a brake wheel bevel toothed wheel a epicyclic
wheel bevel toothed wheel discs t t the latter engaging with reciprocating
arms operated by a crank cam or equivalent substantially as described and
illustrated in the accompanying drawings.
10. In an embroidery machine the combination with the universal cam shafts f³
of a plate k connected by links to a cam lever such as k³ and cams such as ke k
substantially as and for the purpose described and illustrated in the accompanying
drawings.
11. The combination and arrangement of parts constituting the complete
apparatus for imparting automatic universal movement to the tissue frame for
each stitch substantially as herein described and illustrated in the accompanying
drawings.
12. The combination and arrangement of parts constituting the complete
apparatus for imparting automatic universal movement to the tissue frame for
each stitch and for adjusting the said apparatus simultaneously with the cording
or braiding guides or the like according to the predetermined direction of each
stitch substantially as described and illustrated in the accompanying drawings.
1.191
H. CECIL SHELDON.
WILLIAM LOCKWOOD.
W. P. Thompson & Boult,
Agents for the Applicants.
H. CECIL SHELDON.
WILLIAM LOCKWOOD.
W. P. Thompson & Boult,
Agents for the Applicants.