Improvements in Jacquards employed in Looms for Weaving.
Year: 1895

page_text: Date of Application, 29th Jan., 1895
Complete Specification Left, 19th Oct., 1895-Accepted, 23rd Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in Jacquards employed in Looms for Weaving.
I, EDWARD Hollingworth, of the Firm of Hutchinson, Hollingworth and
Company, Limited, of Dobcross, in the County of York, Power Loom Makers,
do hereby declare the nature of this invention to be as follows (which invention
has been communicated to me from abroad by William Wattie, of Worcester,
Massachusetts, United States of America, Machine Maker):
:―
This invention relates to looms, and more particularly to the harness and drop
box mechanism employed in the Hollingworth & Knowles loom.
The object of the present invention is to obtain a greater range of adjustment in
timing the parts of the harness and drop box mechanism, to do which I impart a
continuous but fast and slow motion to the pattern cylinder, without in any way
changing the speed of the crank shaft or the loom proper.
My invention consists in fixing onto the shaft of the pattern cylinder, a space
driving wheel, on the periphery of which are notches or recesses equi distance
apart, whilst those parts of the wheel between the notches are made with cog
teeth. This space wheel has a continuous rotary motion imparted to it but at
different speeds. A slow motion is imparted to it by a space pinion-wheel made
to gear with the teeth on the space wheel, but a crank pin forming part of or
connected to the space pinion, enters one of the recesses in the space driving
wheel and thereby imparts to it a quicker motion and moves the said wheel
sufficiently far as to make the next set of teeth in the space wheel mesh with the
space pinion when a slow motion is imparted to the pattern cylinder, until the
crank pin enters another recess in the space wheel and so on one after another.
This arrangement of giving a continuous fast and slow motion to the pattern
cylinder in no way interferes with the reversing motion of the top cylinder gear
when reversing the pattern cylinder.
Dated this 28th day of January 1895
TASKER & CROSSLEY,
Huddersfield, Patent Agents.
Improvements in Jacquards copy
I, EDWARD HOLLINGWORTH, of the Firm of Hutchinson, Hollingworth and
Company, Limited, of Dobcress, in the County of York, Power Loom Makers,
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 (which invention has been communicated to me from abroad by
William Wattie, of Worcester, Massachusetts, United States of America, Machine
Maker):
This invention relates to looms, and more particularly to the harness and drop
box mechanism employed in the Hollingworth and Knowles loom.

page_text: The object of the present invention is to obtain a greater range of adjust-
ment in timing the parts of the harness and drop box mechanism, to do which
I impart a continuous but alternately fast and slow motion to the pattern
cylinder, without in any way changing the speed of the crank shaft or the loom
proper.
My invention consists in fixing onto the shaft of the pattern cylinder, a space
driving wheel, in the periphery of which are formed notches or recesses arranged
equi distances apart, whilst those parts of the wheel between the notches are
provided with cog teeth.
This space wheel has a continuous rotary motion imparted to it but at different
speeds, a slow motion being imparted by a space pinion made to gear with the
teeth on the space wheel, but a crank pin forming part of or connected to the
space pinion at every revolution thereof enters one of the recesses in the space
driving wheel and thereby imparts to it a quicker motion and moves the said
wheel sufficiently far as to make the next set of teeth in the space wheel mesh
with the space pinion when a slow motion is again imparted to the pattern cylinder
until the crank pin enters another recess in the space wheel and so on one after
another.
I have shewn in the annexed drawings a detached portion of the Jacquard
mechanism sufficient to illustrate the nature of my improvements applied
thereto.
Referring to the drawings:-Fig. 1 is elevation of the parts and Fig. 2 plan
view.
A represents the upper cylinder gear journalled in the upper portion of the
head frame B, and C is the axle of the lower cylinder gear also journalled in the
head frame. D is the pattern cylinder shaft mounted in the frame B in the usual
way. On the front end of the said shaft D is fastened the pattern cylinder
driving wheel E which is made with a series of equi distant notches Fin
its periphery; in this instance there are six of such notches. Portions of the
periphery of the wheel E between the notches F are provided with cog teeth G.
For a predetermined distance on each side of the notches F, the teeth Gare
left off and these portions of the periphery of said wheel E are plain as well
as the notched portion. The outer ends of the notches F are bevilled or made
slightly taper to allow of the ready admission and withdrawal of the driving pin H
on the crank arm I which is secured on the space pinion J; in this instance by
screw K or it may form an integral part of the said space pinion J but preferably
it is attached by a screw K so that the pin H can be set or adjusted to the exact
position required, a slot L in the head frame B permitting such adjustment to be
made. The space pinion J is made with nine teeth corresponding to the number
of teeth G on each section of the periphery of the pattern wheel E, the said space
pinion J gearing with the said cog teeth G and communicating a slow motion to
the wheel E, but when the crank pin H enters one of the notches F then a quick
motion is imparted to the cylinder gear, and this goes on so long as the loom is at
work, thereby giving a continuous but alternate fast and slow motion to the pattern
cylinder.
The varying speed of the pattern gear in no way interferes with the reversing
motion of the top cylinder gear when reversing the pattern cylinder, neither does
the varying motion of the said pattern cylinder in any way affect the speed of the
crank shaft or the loom proper.
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 :-
In jacquards of looms, the use of a driving wheel such as E having notches such
as F and cog teeth arranged as set forth between said notches, in combination with
a space pinion wheel J crank arm I and nin HL for importive to the nottown

page_text: cylinder a continuous but fast and slow rotary motion alternately all arranged and
operating in the manner shewn in the drawings and described in the Specification.
Dated this 18th day of October 1895.
TASKER & CROSSLEY,
Huddersfield, Patent Agents.