Improvements in or relating to Jacquard Mechanism for Embroidery Machines.
Year: 1896

page_text: Date of Application, 6th Feb., 1896
Complete Specification Left, 6th Nov., 1896-Accepted; 16th Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in or relating to Jacquard Mechanism for Embroidery
Machines.
I, HENRY HILL of the Firm of Balm Hill & Sons, 63A Mansfield Road in the
Borough of Nottingham, Lace Manufacturer do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in Jacquard mechanism for automatically
moving the embroidery frame of a multiple embroidery machine each stitch in any
direction required.
In carrying out this invention the two rack frames for operating the horizontal
and vertical screws connected with the embroidery frame, are in the present
arrangement connected to two preferably horizontal shafts which are mounted
loosely and slide longitudinally in bearings secured to two standards.
The two
latter are secured at a suitable height to one of the end standards of the machine.
and are also connected to each other by cross-stays.
Secured to each shaft is a transverse frame preferably provided on its outer edge
with steps on which are secured adjustable brackets, pivotted to each of the latter
is a selector bar provided near its free end with a catch or projection to engage
with a reciprocating frame.
The selector bars in each set are arranged at different heights and preferably at
equal distances from each other, cach bar is also arranged in end elevation a little
to the right or left of the one above it so that each may be operated by an
independent vertical selector.
The reciprocating frame is pivotted at its upper end on a transverse shaft or
pivot secured to the framing, and its lower end is connected to an eccentric on the
main shaft, or to a lever operated by a cam on the said shaft. The main shaft is
carried transversely in bearings secured to the framing, and is connected to the
main shaft of the embroidery machine by gearing or other means.
The reciprocating frame oscillates in a plane parallel to the two shafts, and is
provided with a stud or projection to engage with each selector bar when the latter
are raised by the vertical needles. The studs or projections are arranged at
uniformly increasing distances from the point about which the frame oscillates and
it therefore follows that each selector bar will be moved a distance which is
determined by the position of the stud on the oscillating frame with which
it engages.
.
For example if the lower selector bar is raised it will engage with the stud
which is at the greatest distance from the point about which the frame oscillates,
and it will be moved the greatest distance, if the upper selector bar be raised it
will engage with the stud which is nearest the point about which the frame
oscillates, and it will be moved the shortest distance.
If either of the intermediate seleotor bars were raised the one raised would be
moved a distance determined by the position of its operating stud with respect to
that of the two extreme studs.
As the whole of the selector bars in each set are connected to the same frame,
and each frame to one of the two parallel shafts, the latter will be moved a
distance equal to that of the selector bar raised, and this movement will be
communicated to the rack frame.

page_text: The selector bars are raised by vertical selector needles carried in plates or
sleys arranged above and below the selector bars, the said sleys being secured to the
framing.
In addition to the selector bars described for giving the movement to the racks,
are four selector bars which are connected to the intermediate pinion levers, for
moving the pinions into and out of gear with the racks.
These selector bars are preferably mounted horizontally in recesses or openings in
transverse plates or sleys, and are each raised by a vertical needle so as to engage
with a striking part on the end of a reciprocating lever or levers, actuated by a
cam or cams on the main shaft.
The whole of the vertical needles described are connected preferably by flexible
convections to and are operated by the vertical hooked needles of an arrangement
similar to that employed in what is known as a "Manchester jacquard," in which
the vertical hooked needles are raised by a grid when selected by the horizontal
needles.
This Jacquard arrangement is placed preferably over the mechanism previously
described, and in place of the Jacquard cards for operating the horizontal needles
I preferably employ an endless band of paper or other Hexible material. This
band is carried over a system of rollers and is perforated for the pattern and also
with holes to engage with studs or pegs in a feed roller, so that the endless band
may be advanced the required distance each motion of the jacquard.
The feed roller may be placed above the ends of the horizontal needles and be
actuated by a ratchet-wheel and pawl operated by a cam on the main shaft
previously described.
The endless band passes between the ends of the horizontal needles and a
reciprocating perforated plate, by means of which the band is moved up to the
needles and the desired needles selected each motion.
Both the grid and the reciprocating plate may be carried in a well-known
manner by shafts sliding in bearings in the frame, and be operated by cams on the
main shaft through suitable connections.
Dated this 6th day of February 1896.
BOULT & WADE,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Jacquard Mechanism for Embroidery
Machines.
1, HENRY HILL, of the Firm of Balm, Hill & Sons, 634, Mansfield Road, in the
Borough of Nottingham, Lace Manufacturers, do hereby declare the nature of
this invention and in what mauner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This invention relates to improvements in Jacquard mechanism such as that
described in the Specification of Letters Patent No. 22967 of Nov. 30th, 1895,
granted to me, for automatically moving the embroidery machine each stitch in any
direction required.
The object of the present invention is to provide more perfect and convenient
means for moving longitudinally each of the two double racks G G¹ and L L
described and shown in the specification cited. The longitudinal movement of each
of the racks is converted into the rotary motion of a pinion engaging therewith,
and the rotary movement of the pinion being communicated to a screw or a nut
thereon, the screw is moved longitudinally, and this movement is communicated to
the embroidery frame to which the said screw is connected.

page_text: The length of the longitudinal movement of the screw is determined by the
angular distance through which it or the nut is rotated, and the latter is determined
by the longitudinal movement of the corresponding rack.,
The direction in which each screw or nut is rotated is determined by putting the
pinion into engagement with one or other of the two racks.
The improved mechanism is arranged to automatically move each double rack
longitudinally, a space equal to one, two, or more teeth as required, and it is
designed so as to give the long or short movements with equal smoothness and
without the jerks or shocks which invariably accompany the use of droppers or
distance pieces, in order that the machine may be run at a higher speed than has
hitherto been practicable and the rate of production increased.
The invention will be best understood by reference to the accompanying drawings,
in which :-
Fig. 1 is a side elevation, and
Fig. 2 an end elevation of Jacquard mechanism constructed according to my
invention.
Fig. 3 is a vertical cross section taken on line X X of Fig. 1.
Figs. 4, 5, 6 and 7 are views showing parts drawn to a larger scale than
in Figs. 1 to 3.
Like letters indicate like parts throughout the drawings.
The framing of the apparatus is formed by two standards A. A. connected by
three cross stays. B B B C is a transverse shaft from which the whole of the
requisite movements of the apparatus are obtained; this shaft C is carried in
bearings C¹ formed in or secured to the standard A. A.
The apparatus is placed in a convenient position preferably at one end of the
einbroidery machine, and the shaft C connected by suitable gearing to the main
shaft of the said machine.
DD are two parallel shafts which are mounted loosely and slide longitudinally
in a bracket bearing D' secured to the cross stay B and in bearings D' formed in
or secured to the cross stay B¹.
Secured to each shaft D is a diagonal frame E (see Figs. 1, 3 and 4) provided
with a corresponding number of steps, and connected to each of the said frames E,
is a corresponding number of pivotted jacks or arms F provided with hooks or
catches, the said jacks being arranged one above the other as shown.
The jacks or arms F are connected to the frame E by adjustable brackets E¹
(see Figs. 1 and 4.) in which the jacks or arms F are pivotted, each of the said
brackets being secured to a different step on the frame E. The jacks or arms are
thus not only arranged one above the other, but are also each arranged in an
independent vertical plane.
The upper ends E of the frames E engage in a longitudinal slide E' secured to
the cross stay B, this slide is placed parallel to the shafts D and prevents the
frames E and the shafts D from rotating about the axles of the latter."
G is a swinging frame which is pivotted at G¹ in bearings G' secured to or
formed in the standards A A; this frame is reciprocated between the dotted
extreme positions indicated at H H' by a cam, or as shown by a crank C¹ on the
mainshaft C, and a connecting rod I.
The frame G approximates in form to the space occupied by the jacks F and is
formed with an opening at each side to receive each set of the said jacks. These
openings are formed with steps in the same manner as the diagonal frames E and
each step is provided with a stud or projection J adapted to engage with the hook
of the corresponding jack. The studs J in each set are thus equal in number to
the jacks F in each set, & are disposed so that the hook of each jack when the
latter is raised will engage with its corresponding stud J.
The studs J in the frame G, it will be seen, are arranged at gradually
increasing distances from the pivot or fulcrum G' and each will thus move through
a different space the amplitude of which is determined by its distance from the pivot
or fulcrum G.

page_text: For example the hook of the upper jack marked No. 1. (see Fig. 5.) when
raised will engage with the upper stud which is also marked No: 1. -The hook
or the jack No. 2 when raised will engage with stud No. 2, and so on throughout.
It will be seen, that No. 2 stud being further from the fulcrum G₁ of the
frame G than the stud 'No. 1 it will move a greater distance than stud No. 1. and
it therefore, follows that if No. 2 jack be raised, it will engage with No. 2 stud and
be moved a greater distance than No. 1 would have moved had the same been
raised and engaged with, its corresponding stud No. 1, and a less distance than
No. 3. It will also be seen that the whole of each set of jacks F from No. 1 to 18
being secured to one frame E and the latter to the shaft D. the said shaft and
frame E and the whole of the jacks in the set will be moved the same distance as
the jack which is raised and is thus put in action.
The distance of each of the studs J from the fulcrum G' is preferably arranged
Bo that if No. 2 stud is brought into action, it will move the shaft D twice the
distance it would be moved if No. 1 were brought into action. No. 3 three times
the distance of No. 1 and so on, so that if No. 1 stud moves the shaft a distance
equal to one unit or tooth of the rack, No. 2 will move it 2 units or teeth and so on,
it is therefore only necessary to raise one jack F for each movement in order to
move the shaft D the requisite distance.
The position of the hooks F1 of the jacks F are arranged in line with the
frame G when the latter is in the extreme position shown at H' Fig. 1. so that
whichever jack is raised, it is immediately engaged by its corresponding stud on
the frame G and the movement of the said jack is then identical with that of the
stud with which it engages throughout."
With this arrangement there is no jerk or shock either at the commencement or
finish of the movement of the shaft D.
The shafts DD may be connected to the racks in the same manner as described
in the specification cited or by other convenient means..
The jacks F are each raised by a vertical needle K (Figs. 3 and 6.) the whole
of which are mounted in a 'top sley L secured to the standards A A and a
triangular sley M secured by a bracket M' to the cross stay's B'.
The upper ends of the vertical needles' K-aré connected by threads K¹ to the
vertical needles of a jacquard of any well-known and suitable construction.
Springs K are, preferably interposed between the jack threads K¹ and the
vertical needles K in order that the selecting needles in the jacquard may be
raised at any point in the movement of the frame G, or at a point where the
jacks Fare held down by the frame G. When the frame G returns to the
position shown at H¹ the jack whose corresponding selector needle in the jacquard
has been previously raised, will be raised by the action of the spring and its hook
will engage with its corresponding stud J on the frame G.
With this arrangement the whole of the time occupied' by the return movement
of the frame G may be employed for the selecting movement of the jacquard,
and the movement is consequently smoother, and a higher speed may thus be
obtained.
Similar means may also be provided in connection with the above construction
for moving the pinions into gear with the racks, to those described in the
specification cited.
Four jacks N N N N are pivotted to corresponding rods T T¹ T' T', the
latter being connected in pairs to the two opposite ends of the pivotted pinion
levers.
The jacks N are pivotted at hooks or catches N see Fig. 7. which normally
engages with studs on the two reciprocating arms O, secured to the shaft, which
latter is carried in bearings P¹ sécured to or formed in the standards A A.
The jacks N which are to be inactive are raised clear of the studs as shown
in Fig. 7 by jack threads Q which are connected to vertical needles in the
jacquard.
The arms are reciprocated by a cam R on the shaft C- through a lever R¹

page_text: onnected to one of the arms O by a link R. The jacks N are returned to their
ormal position after each movement by springs S acting on the rods T, T', T', T'.
Having now particularly described and ascertained the nature of the said inven-.
ion and in what manner the same is to be performed, I declare that what I
laim is :-
1. In Jacquard mechanism for embroidery machines the combination with a.
swinging frame such as G provided with one or more sets of studs or projections J
at varying distances from its fulcrum of one or more sets of hooked jacks such
as F to engage with the studs or projections of said frame substantially as-
described.
2. In a Jacquard mechanism for embroidery machines the combination with a
Swinging frame such as G provided with one or more sets of studs or projections J
at varying distances from its fulcrum of one or more sets of hooked jacks such:
as F, the whole of the jacks in each set being connected to a common frame E.
and each adapted to engage with one of the studs J on the frame G substantially
as described.
3. In Jacquard mechanism for embroidery machines the combination with a
swinging frame such as G provided with one or more sets of studs or projections J
at varying distances from its fulcrum of jacks such as F frame such as E and
vertical needles such as K for operating said jacks substantially as described.
4. In Jacquard mechanism for embroidery machines the combination with a.
swinging frame such as G provided with one or more sets of studs or projections J
at varying distances from its fulcrum of jacks such as F, frame such as E, and
vertical needles such as K, the jacks F in each set being arranged one above the
other and each in different vertical planes substantially as described.
5. In Jacquard mechanism for embroidery machines the combination with a
swinging frame such as G provided with one or more sets of studs or projections J
at varying distances from its fulcrum of jacks such as F, frame such as E, vertical
needles such as K and springs such as K interposed between the needles K and
the selector needles of the jacquard, substantially as described.
6. The combination and arrangement of parts constituting the complete
Jacquard mechanism for embroidery machines, substantially as described and.
illustrated in the accompanying drawings.
Dated this 5th day of November 1896.
FONDY ITIT T
VDY TIT T
HENRY
Boult & Wade,
Agents for the Applicant..