Improvements in Jacquard and Box Motion Mechanism. for Looms for Weaving.
Year: 1892

page_text: Date of Application, 29th Oct., 1892
Complete Specification Left, 29th July, 1893-Accepted, 2nd Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Jacquard and Box Motion Mechanism. for Looms
for Weaving.
I, EDWARD HOLLINGWORTH, of Dobcross Iron Works, Dobcross, Yorkshire,
Loom Maker, do hereby declare the nature of this invention to be as follows:-
This invention relates mainly to the Hollingworth and Knowles jacquard and
box motion mechanisms, the object therein being to employ pegs or lags for
actuating the vibratory levers employed for working the jacquard and box motions, to
reduce the liability of the said levers being strained owing to the weight or pressure
they have to sustain when elevated, and otherwise to improve the efficiency of the
motion and render its action certain and easy.
In carrying out my invention, I employ the ordinary vibratory levers with their
gear wheels, also the connecting arms and jack levers, and the upper and lower
segmental reversing chilled cylinders or gears by which the gear wheels are
actuated according to selection by the jacquard pattern chain for the purpose of
forming the "shed." In a suitable position under the vibratory levers are placed
a number of horizontal bars one for each lever, such horizontal bars being mounted
at their outer ends on a pin or shaft which passes through slots formed in the ends
of the bars and serves as a fulcrum therefor, whilst the said slots permit of end wise
movement of the said bars within their prescribed limits. Mounted on each end
of the aforesaid pin or shaft are two arms on a suitable frame carrying at the free
extremities small bowls or friction pulleys engaging with cams secured on each end
of lower chilled cylinder gear shaft, which said cams raise or give an upward and
downward movement to the arms or frame at every revolution of the gear shaft.
Secured to or cast on the arms or frame is a bridge or elevation bar which occupies
a position clear of the bottom chilled cylinder gear but as near to the centre of
the gear wheels as it is convenient to have it, said bar extending across the space
between the two arms or sides of the frame and being on a lower plane than the
moving horizontal bars so that when any of the latter are selected and presented
as afterwards explained they are engaged by the bridge or elevator bar as it rises
with the frame, and moved upon their fulcra in such manner as to lift the vibratory
levers and place their gear wheels into gear with the upper chilled cylinder gear.
Mounted on a separate shaft or pin are a number of weighted bell crank or other
suitable form of levers corresponding to the sliding bars or plates and engaging
same at their upper ends, whilst the lower ends of said levers are adapted to be
engaged by suitable pegs secured to peg lags forming the pattern chain when
presented by the pegging barrel or cylinder.
When a peg is presented under any of the weighted levers they are oscillated
upon
their fulcrums in such manner as to slide the horizontal bars endwise and
place their extremities in the path of the elevator bar or bridge, which, when
raised by the cams, engages with said plates and forces them against the vibratory
levers whereby the latter are elevated and their gear wheels placed in gear with
the upper chilled cylinder, where they are held (during the formation of the "shed")
by a "dwell" on the cams, and as the latter continue to revolve and allow the
frame or arms to descend, the plates or bars and the vibratory levers return to
their normal positions, the plates being slided back by the weighted levers and are
ready for the next selection. Where there is no peg or bowl the parts remain
inactive, the horizontal bars being clear of the elevator bridge or bar.
The vibratory levers work in a suitable grate which also serves for the sliding
horizontal bars.
Similar mechanism also actuates the shuttle boxes according to selection.
In coniunction with the means set forth a plate or bar capable of acting either

page_text: by oscillation or sidewise movement on the weighted bell crank levers is also
employed to level the healds or bring the warp to one level and is operated by the
operative either direct or through the medium of levers, rods, cords or like devices.
The mechanism above described is simple and certain in action, is not liable to
actuate the wrong levers and jacks, and by reason of the elevator bar or bridge
..being brought as near as possible to the centre of the gear cranks there is greater
support afforded to the vibratory levers and much less risk of them being strained
or otherwise damaged by the pressure or weight placed thereon during the. raising
of the shuttle boxes or the healds in forming the shed.
Dated this 28th day of October 1892.
TASKER & CROSSLEY,
Huddersfield, Agents.
f
COMPLETE
SPECIFICATION.
Improvements in Jacquard and Box Motion Mechanism for Looms
for Weaving.
I, EDWARD HOLLINGWORTH, of Dobcross Iron Works, Dobcross, Yorkshire,
Loom Maker, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
This invention relates mainly to the Hollingworth and Knowles jacquard and
box motion mechanisms, the object therein being to employ pegs or lags for
actuating the vibratory levers employed for working the jacquard and box-motions,
to reduce the liability of the said levers being strained owing to the weight or
pressure they have to sustain when elevated, and otherwise to improve the efficiency
of the motion and render its action certain and easy.
In order that this invention may be better understood I will make reference to
the accompanying sheets of drawings illustrative thereof, wherein
Fig. 1 is front elevation of jacquard mechanism having my improvements applied
.thereto, and Fig. 2 is a plan view of same.
A represents the framework for supporting the various parts of the apparatus,
B the lower chilled cylinder gear, the upper chilled cylinder gear, and D the
vibrator wheel of a series arranged side by side, and which are pivotted at a on
the vibrator levers E, the said vibrator wheels being also attached by a crank pin 6
.to the connecting arm F and to the jack lever G all arranged so far in the ordinary
manner.
The primary object of my present invention is to place the vibrator wheels D
into gear with either the upper or lower chilled cylinder gears B, C, according to
the character of the cloth being woven and according as they are selected which,
under this class of loom, has hitherto been effected by bowls or small pulleys.
According to this invention I propose to dispense with the bowls and use instead
,thereof pegs or lags which I ain now about to describe.
H represents a pegging wheel secured to the diagonal shaft I which receives
rotary motion by means of bevel wheels J from the top cylinder gear C, which
cylinder has a continuous rotary motion imparted to it as is well understood. The
pegging wheel H is provided with a peg K adapted to gear with a star wheel L
fixed on the end of the jacquard cylinder M which carries lags N provided with
pegs c.
This star wheel L receives intermittent motion from the pegging wheel H
for every revolution of the crank shaft and a like intermittent rotary motion is
imparted to the jacquard cylinder M.
A series of horizontal bars O are employed, the number thereof corresponding to
the number of the vibrating levers E one for each heald or shaft. The rear
ends of these horizontal bars are carried by a cross shaft or stud P, .whilst the
Aorward ends of the horizontal bars O are borne upon a roller Q, or by a bridge or

page_text: cross bar R forming part of the oscillating bridge S. These horizontal bars O
are slotted at their: rear ends (see detail Fig. 3,), and they are free to move end-
wise or. backward and forward ron the shaft P, such movement.being controlled by
the pegs in the lags, and this is effected in the following manner :Each horizontal
bar is made with a sneck or recess, shewn more clearly in plan view Fig. 2, and
into: this recess is inserted the upper end of a bell crank lever T working upon a
fulcrumid, the opposite arm of the bell crank lever resting, or otherwise, upon
the pegs c; therefore when a peg is present and passes under the lower arm of the
bell crank lever, the latter is raised, thereby causing the horizontal bar. O to be
pushed forward, and the forward end thereof placed immediately over or into
engagement with the lifting rail R attached to or forming part of an oscillating
frame S, so that on the latter being raised as afterwards described it would bring
the said bar O into contact with the corresponding vibratory lever E and lift it
upwards so as to place the vibrator wheel into gear with the top cylinder gear, but
if a peg is absent from the lags, the lower arm of the bell crank lever drops, or it
may be forced downwards, the effect of which is to draw the horizontal bar in the
opposite direction and away from or clear of the lifting rail R so that it is not
raised by said lifting rail and consequently the vibrator wheel is allowed to drop
from the top cylinder gear into mesh with the lower cylinder gear, whereby the
jack lever will then be operated in the reverse direction. The method of raising
the vibrator levers each time the horizontal bars are placed into position is effected
in the following manner :-The rectangular frame S is pivotted upon the rod P
and its forward arms carry bowls or pulleys U bearing upon cams V secured upon
each end of the shaft of the bottom cylinder gear, so that as the said shaft revolves
the cams raise the frame S, in doing which the horizontal bars O which have been
pegged or pushed forward as shewn in full line Fig. 3 are engaged by the rail or
bridge R and forced thereby against their corresponding vibrator levers which are
thus raised and their respective vibrator wheels placed into gear with the top
cylinder; but those horizontal bars which have not been pegged (as indicated in
dotted lines Fig. 3) will not be within reach or in the path of the rail or bridge R
on the upward movement of the frame and consequently the vibrator wheels remain
in gear with the lower cylinder gear; these several movements and operations
taking place for each revolution of the crank shaft. The vibrator levers E together
with the sliding bars O are inserted into a grate W so that they cannot get displaced
but will maintain a parallel position throughout.
In order that an even shed may be formed and the healds occupy a perfectly
level position during the time the shuttle is being sent across the loom, a levelling
bar is employed catching under the toes or lower arms of the bell crank
levers T. This levelling bar may be actuated by a rod from any convenient
part of the loom, care being taken to ensure that it is operated at the right time.
Mechanism or apparatus like that above described is also employed to work the
shuttle boxes, the parts for this purpose being arranged at the opposite side of the
jacquard; the chilled gear shewn in plan view Fig. 2 and marked Z being
employed for that purpose.
The apparatus above described is simple and certain in action, is not liable to
actuate the wrong vibrator levers and jacks, and by reason of the elevator bar or
bridge R being brought as near as possible to the centre of the vibrator wheels
there is greater support afforded to the vibrator levers, and much less risk of their
being strained or otherwise damaged by the pressure or weight placed upon them
during the time the healds are forming the shed or the shuttle boxes are being
operated.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
Firstly. In looms having vibrator levers E and gear cranks D, the combination
ofoliding have fro amounti

page_text: Secondly. In looms having vibrator levers E and gear cranks D, the combination
therewith of horizontal sliding bars O and bell crank levers T operated by pegs
and peg lags or pattern chain substantially as herein shewn and described..
Thirdly. In looms having vibrator levers E and gear cranks D, the combination
therewith of horizontal sliding bars O bell crank levers T peg lags N or pattern
chain and the hinged oscillating frame S provided with a bridge or cross rail R at
a point near to the centre of the vibrator wheels, all operated in the manner
substantially as herein shewn and described.
Dated this 27th day of July 1893
TASKER & CROSSLEY,
Huddersfield, Agents.