IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1876

page_text: LETTERS PATENT to George Smith, of Huddersfield, in the County of York,
Mechanic, for the Invention of "IMPROVEMENTS IN LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said George Smith at the Office of
the Commissioners of Patents on the 22nd April 1876.
GEORGE SMITH, of Huddersfield, in the County of York, Mechanic.
MENTS IN LOOMS FOR WEAVING."
"
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IMPROVE-
This Invention consists of an improved method of supporting the shuttle boxes.
Hitherto these boxes have been supported by the lifting apparatus which consists
of a series of "links or cams turned by a star wheel. In practice it is found that
the weight of the boxes and levers causes these cams or links to wear, and the
metal of which they are composed not being of uniform hardness they wear
unevenly, consequently they fail after a time to lift the boxes to the required height.
To remedy this defect I employ an upright lever with catches on the top end arranged
in steps the distance of a lift apart. These catches are by means of a sufficiently
strong spring pressed underneath a pin or stud in the lifting lever, and the catches
being inclined, the weight of the lever and boxes is taken off the links and sup-
ported entirely by the upright lever. The catches are disengaged from the pin or
stud at each movement of the boxes by means of. a cam acting on the lower end of
the lever. This cam is worked by bevil wheels, one of which is fixed to an upright
shaft which by means of other bevil wheels communicates motion to the star wheel.
I also propose to work the star wheel of the jacquard apparatus by means of
"skew" gearing from the upright shaft aforesaid, by which I obtain more direct
action than heretofore.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Smith in the Great Seal Patent Office on the 21st October
1876.
GEORGE SMITH, of Huddersfield, in the County of York, Mechanic.
MENTS IN LOOMS FOR WEAVING."
" IMPROVE-
This Invention consists of an improved method of supporting the shuttle boxes
Hitherto these boxes have been supported by the lifting apparatus which consists
[Price 4d.]

page_text: of a series of "links" or cams turned by a star wheel. In practice it is found that
the weight of the boxes and levers causes these cams or links to wear, and the
metal of which they are composed not being of uniform hardness they wear
unevenly, consequently they fail after a time to lift the boxes to the required height.
To remedy this defect I employ an upright lever with catches on the top end arranged
in steps the distance of a lift apart. These catches are by means of a sufficiently
strong spring or cam pressed underneath a pin or stud in the lifting lever, and the
catch being inclined the weight of the lever and boxes is taken off the links and
supported entirely by the upright lever. The catches are disengaged from the pin
or stud at each movement of the boxes by means of a cam or spring acting on the
lever. The cam is worked by bevil wheels, one of which is fixed to an upright
shaft, which by means of other bevil wheels communicates motion to the star wheel.
I also propose to work the star wheel of the jacquard apparatus by means of "skew"
gearing from the upright shaft aforesaid by which I obtain more direct action than
heretofore.
In order that this Invention may be more fully understood, I herein give reference
to the accompanying Sheet of Drawings representing a loom, end elevation, with
improvements applied.
The shuttle boxes attached to a rod A. are supported by the lever B hinged at C.
This lever is raised and lowered by the links or cams D. My improvements consist
in the application of the catch lever E working on the stud F. The catches or
notches are so distanced as to correspond with the different "lifts," and at each lift
the catch is forced under the pin G by the cam H so as to remove the weight of the
boxes from the links D. As the cam H revolves the lever E is forced from under
the pin G by means of the spring J, leaving the box lever B free to be raised or
lowered. The links D are operated by star wheel K actuated by peg wheel L.
This peg wheel is turned by bevil wheels M. from the upright shaft N actuated by
suitable gearing from the crank shaft P. This shaft N also communicates motion to
the cam H by means of the bevil wheels R. The star wheel of the jacquard appa-
ratus is worked from the shaft N by "skew " gear S turning the horizontal shaft T
on which is bevil wheel U gearing with another bevil wheel V at the end of an
inclined shaft W, which by means of other bevil wheels communicates motion to the
star wheel of the jacquard apparatus as will be readily understood.
In conclusion I would have it understood that I claim as my Invention―
Firstly. The use of a lever or other equivalent for supporting the boxes, arranged
and operated substantially as herein shewn and described.
Secondly. The method of communicating motion to the jacquard apparatus
substantially as herein shewn and described.
Thirdly. The upright shaft N arranged as and for the purposes herein shewn and
described.
In witness whereof, I, the said George Smith, have hereunto set my hand and
scal, this Nineteenth day of October, in the year of our Lord One thousand
Witness,
J. W. TASKER,
Patent Agent,
Halifax.
GEORGE SMITH. (L.S.)