Improvements in or relating to Jacquard Mechanism for Embroidery Machines.
Year: 1897

page_text: Date of Application, 13th Jan., 1897
Complete Specification Left, 12th Oct., 1897-Accepted, 27th Nov., 1897
Date of Application, 13th Jan., 1897
Complete Specification Left, 12th Oct., 1897-Accepted, 27th Nov., 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 jacquards such as described in the
specification of Letters Patent No. 2751 of February 6th 1896 for automatically
moving the frame of an embroidery machine each stitch, both in the required
direction and the required 'distance.
In carrying out my invention the two longitudinally sliding shafts or slides
in the jacquard, which are connected to the racks which operate the screws, are
each provided with a transverse frame. Connected to each frame is a convenient
number of hooked arms or jacks, the whole of which are preferably arranged in
an approximately horizontal plane their hooks may be also all equidistant from
the transverse frame and formed near the ends of the jacks.
The hooked jacks are pivotted to the frame or to brackets secured thereto, and
are raised by vertical needles carried in suitable sleys, in the same manner as the
jacks in the specification hereinbefore referred to.
To each hooked jack is a corresponding lever, the lower ends of the latter are
preferably mounted on a horizontal transverse shaft so that they can oscillate
in planes parallel to their jacks. The upper ends of the levers are each provided
with a pin or stud to engage with the hook of its corresponding jack.
The hooks are preferably formed on the upper edges of the jacks and the pins
or studs on the levers arranged so that the jacks have to be raised for their hooks
to engage therewith.
Each of the levers are operated by an independent cam, the whole of which are
mounted on a horizontal transverse shaft carried in bearings secured to or formed
in the framing.
This shaft is connected by suitable gearing to the main shaft of the embroidery
machine.
It will now be understood that to each longitudinally sliding shaft or slide,
there are a set of hooked jacks, a set of levers to correspond and a set of cams one
to operate each lever in the set.
The levers may each be provided with an antifriction roller or tappet in peri-
pherial contact with its corresponding cam.
The cams are each formed to impart a different movement to its corresponding
lever; for example No. 1 may be formed so as to move its corresponding lever
from its normal position through an angular space which may be termed one
unit. No. 2 may be formed so as to move its lever two units No. 3 three units
and so on throughout.
By selecting or raising that jack which corresponds to the lever which moves
through an angular space equal to the number of units it is desired to move the
.מ
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page_text: longitudinal slide the said jack will engage with its corresponding lever and the
desired result will be obtained.
The cams are preferably formed so that when the levers are in their normal
position their upper ends are in line and just clear of the hooks of the jacks.
The levers may be returned to their normal positions by springs or other 5
convenient means.
Dated this 13th dor of Tann 1807
BOULT & WADE,
Agents for the Applicant.
Improvements in or relating to Jacquard Mechanism for Embroidery
Machines.
I
HENRY HILL, of Balm Hill & Sons, 63A, Mansfield Road, in
the City of Nottingham, Lace Manufacturer, 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 jacquard mechanism of the kind
described in the specification of Letters Patent No. 2751. of February 6th 1896.
for automatically moving the embroidery frame of a multiple embroidering
machine, each stitch both in the required direction and the required distance.
Jacquards of this description are mainly arranged to impart a varying length
of movement, to either or both of two main moving or sliding parts therein, one
of the said parts being connected by intermediate mechanism to the embroidery
frame, so that its movement is transmitted to the embroidery frame vertically, and
the other connected so that its movement is transmitted to the frame horizontally.
The present invention relates to means for imparting the requisite varying
length of movement to either or both of the two main sliding parts in the
jacquard.
The invention will be best understood by reference to the accompanying
drawings in which
Figure 1. is a side elevation of jacquard mechanism constructed according to
my invention, and
Figure 2. an end elevation showing parts removed.
Like letters indicate like parts throughout the drawings.
In carrying out my invention the two longitudinally sliding shafts A A which
form the two main sliding parts referred to and are connected to mechanism for
transmitting their movements to the embroidery frame, are each provided with. a
transverse frame B.
Connected to each frame B are a convenient number of hooked arms or jacks C
the whole of which are preferably arranged as shown in an approximately
horizontal plane with their hooks C₁ all equidistant from the frame B.
The arms or jacks C are pivotted to the frames B or to brackets B¹ secured
thereto and their free ends are raised by vertical needles D carried in plates or
sleys E E secured to the framing F.
To each arm or jack C is a corresponding lever G; the lower ends of the whole
of the latter are pivotted on a horizontal transverse shaft H the ends of which
are carried in bearings H¹ formed in the framing F.
The upper end of each lever G is provided with a projecting pin or stud G¹
which will engage with the hooks C₁ of its corresponding arm or jack C when
the free end of the latter is raised.
The whole of the levers G are oscillated about their fulcrums by cams or eccen-

page_text: trics J each of which engages with a projecting nose G2 on the corresponding
lever as shown, or anti-friction rollers may be employed.
The whole of the cams J are mounted on a transverse shaft I carried in
bearings I formed in the framing F and the said shaft is connected by suitable
gearing to the main shaft of the embroidering machine, from which it thus
receives a constant rotary motion.
It will now be understood that to each longitudinally sliding shaft A there are
a set of hooked arms or jacks C, a set of levers G to correspond to the arms or
jacks C, and a set of cams or eccentrics J to correspond to the levers G one cam
in the set actuating one lever G.
The cams J comprising one set are each formed to impart a different length of
movement to its corresponding lever, for example No. 1. is formed to move its
corresponding lever No. 1. from its normal position through an angular space
which may be termed one unit. No. 2. may be formed to move its corresponding
lever No. 2. two units, No. 3. three units, and so on throughout. In Figure 1.
one set of levers G are shown in their several extreme positions into which they
are moved by the cams J.
By raising that jack C in the set which corresponds to the lever G whose stud
moves through a space equal to the distance it is desired to move the shaft A
longitudinally, the said jack will engage with the stud G¹ and the desired result
will be obtained.
For example, if No. 1. arm or jack C be raised the shaft A will be moved say
one unit. If No. 2. be raised the shaft A will be moved two units, and so on
throughout.
It is therefore possible to move each shaft A longitudinally a distance equal to
one or any number of units up to the number of arms or jacks C employed by
aising one needle D.
The levers G may be returned to their normal position by springs of any suitable
form or by other convenient means.
The vertical needles D) are connected to the vertical needles of a jacquard of
any well known construction controlled by pattern cards or a band, in the same
manner as the arrangement described in the specification hereinbefore cited.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is
(1.) In a jacquard for embroidery machines the combination with a main sliding
part such as A of a set of cams or eccentrics such as J each of which may be
connected to and is adapted to impart a different length of movement to the said
sliding part substantially as described.
(2.) In a jacquard for embroidery machines the combination with a main
sliding part such as A of a set of hooked arms or jacks such as C a corresponding
set of levers such as G to engage with said jacks and a set of cams or eccentrics
such as J for actuating the levers G each of which is shaped so as to impart a
different angular movement to its corresponding lever substantially as described.
(3.) The combination and arrangement of parts constituting the complete
jacquard for embroidery machines substantially as described and illustrated in
the accompanying drawings.
D
1
Al of Octabo 1807