Improvements in the Connections between the Uprights and Harness of Double Lift Open Shed Jacquard Machines
Year: 1890

page_text: Date of Application, 17th June, 1890
Complete Specification Left, 14th Feb., 1891-Accepted, 14th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Connections between the Uprights and Harness
of Double Lift Open Shed Jacquard Machines.
I, ROBERT WILKINSON, of 39, Ryan Street, Manchester Road, Bradford, in
the County of York, Overlooker, do hereby declare the nature of this invention to
be as follows:-
The object of this invention is to connect the jacquard harness and uprights of
double lift open shed jacquard machines in such a manner that, the warp threads at
the "shed" of the loom are raised the same distance as the uprights, which may be
operated in the ordinary manner and to so arrange the connections that no sudden
or extra strain is put upon the "neck bands" when the warp threads that are raised
are required to remain up for the next or for any number of picks; and by the
improved connections to be enabled to increase the speed of double lift open shed
jacquard machines and therefore the speed of the loom.
I accomplish my object in the following manner :-The jacquard uprights may
be constructed and operated in the ordinary manner, and to the bottom of each pair
is secured a "neck band which passes over a grooved pulley mounted between a
pair of plates, at the opposite end of which is mounted a similar grooved pulley.
Around the latter pulley is passed another "neck band," one end being secured to
a fixed bar and the other attached to some of the harness.
On one of the uprights being raised the companion upright will remain stationary,
and by the "neck band connecting the two passing over the grooved pulley in
the manner described, the latter will be raised one half the distance of the traverse
or lift" of the upright, and by the bottom "neck band" passing over the other
grooved pulley and secured in the manner described, the harness and warp threads
will be raised double the distance traversed by the grooved pullies or equal to the
"lift" of the upright.
When any of the warp threads that are raised are required to remain up for the
next or for any number of picks, on the return of the raised upright to its normal
position of rest, the companion upright at the same time will be raised at the same
rate of speed by the ascending knife, so that the position of the grooved pullies and
therefore the harness and warp threads in connection therewith will remain prac-
tically the same, thereby obviating the extra strain on the "neck bands" when
harness is connected to the uprights of double lift open shed jacquard machines in
the manner as is now the common practice.
Dated this 14th day of June 1890
JOHN WAUGH,
Agent.
COMPLETE SPECIFICATION.
Improvements in the Connections between the Uprights and Harness
of Double Lift Open Shed Jacquard Machines.
I, ROBERT WILKINSON, of 39, Ryan Street, Manchester Road, Bradford, in the
County of York, Overlooker, 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 :-
The object of this invention is to connect the jacquard harness and uprights of
double lift open shed jacquard machines in such a manner that, the warp threads at
the shed of the loom are raised the same distance as the uprights, by so
arranging the connections that no sudden or extra strain is put upon the "neck
[Pri

page_text: bands" when the warp threads that are raised are required to remain up for the
next or for any number of picks and to be enabled to increase the speed of the
lacquard by my improvements and thereby the speed of the loom,
The invention consists in connecting each pair of uprights by a cord passing over
a grooved pulley mounted between plates having another grooved pulley placed
between same, and around which is a cord attached to a fixed bar and to the
harness.
In the accompanying drawings,
Fig. 1 represents a side view of certain portions of an ordinary jacquard machine
fitted with uprights connected by my improved method.
Fig. 2 is a diagrammatic view of several uprights and cross needles drawn
to a larger scale, showing the supporting and reciprocating bars or knives in
section.
or
The jacquard uprights A and B may be constructed and operated by the recipro-
cating bars or knives C and D mounted and operated in the ordinary manner, but
to the bottom of each pair of uprights A and B, is secured a "neck band
cord E. which passes over a grooved pulley F mounted between a frame or pair of
plates G. between which is also mounted another grooved pulley H.
Around the grooved pulley H is passed a cord J. one end of which is secured to
a fixed bar K. and the other attached to a number of harness threads L. which may
be mounted and connected to the warp threads in the usual manner.
When the uprights A and B. are at the bottom, in the position for the warp
threads to lay on the lathe of the loom, they are supported by the respective
hooks A¹ and B' resting on the fixed bars M. and when one, say for example A of
a pair of uprights is raised by a reciprocating bar or knife C or D. the companion
upright B. will remain stationary, the hook B resting on the fixed cross bar M; the
lifted upright A will operate the cord E and by it being attached to the companion
upright B. cause the grooved pullies F and H to move in an upward direction
one half the distance or traverse of the said upright, and by the bottom cord or
neck band J being arranged in the manner as before described, one end
thereof and the harness threads will be raised double the distance traversed by
the grooved pullies F and H. equal to the lift of the uprights.
::
The pattern surface operates the needles N. and uprights A and B. in the
usual manner, and when any of the warp threads are required to remain up for
more than one pick, the card mechanism will operate the companion upright
say B. which will be raised by a reciprocating bar or knife at the same time
and rate of speed as the upright A is being lowered, so that the position of
the grooved pullies F and H. and therefore the harness and warp threads in
connection therewith, will for all practical purposes remain in the same position,
thereby obviating the extra strain on the "neck bands" occasioned when the
harness is connected to the uprights in the ordinary manner and by the uprights
remaining up when required, the jacquard and therefore the loom can be run at an
increased speed.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, 1 declare that what i
claim is :-
:-
The method of operating the harness and warp threads by the uprights of
jacquard machines connected with a cord E passing over pulley and another
cord passing over pulley H all arranged substantially in the manner shown and as
hereinbefore set forth.
1041
LL
1001
JOHN WAUGH,
Agent.