IMPROVEMENTS IN LOOMS FOR WEAVING, AND IN APPARATUS EMPLOYED THEREIN.
Year: 1878

page_text: LETTERS PATENT to James Bywater, of the Firm of Messrs. Pearson and
Spurr, of Birstal, in the County of York, Machine Makers, and Charles
Bedford, of the same Place, Mechanic, for the Invention of "IMPROVEMENTS
IN LOOMS FOR WEAVING, AND IN APPARATUS EMPLOYED THEREIN.".
PROVISIONAL SPECIFICATION left by the said James Bywater and Charles
Bedford at the Office of the Commissioners of Patents on the 4th February
1878.
JAMES BYWATER, of the Firm of Messrs. Pearson and Spurr, of Birstal, in the
County of York, Machine Makers, and CHARLES BEDFORD, of the same Place,
Mechanic. "IMPROVEMENTS IN LOOMS FOR WEAVING, AND IN APPARATUS EMPLOYED
THEREIN."
This Invention relates,―
Firstly. To improvements in looms for which Letters Patent were granted to
William Pearson and Henry Bradbury, dated April 3rd 1871, No. 881, in which the
notched rod for raising the shuttle boxes is adjusted by a bell-crank lever, which
receives its motion direct from the peg-lag apparatus, the extent of this motion
varying according to the length of peg employed. In cases where more than two
boxes are required this method of indicating is uncertain and irregular, and the
object of this part of our Invention is to remedy these defects. For this purpose
the peg-lags are cause to operate upon a series of horizontal levers, to the ends of
which are fastened by wires the ends of a series of hooked rods attached to the end
of the bell-crank lever above mentioned. The peg-lags raise the horizontal levers,
and at the same time the hooked rods bringing the hooks thereon in contact with a
series of pegs or pins on a rocking lever which receives a constant regular motion
from the crank shaft, and according as the hook is engaged with a pin nearer to or
further from the fulcrum of the rocking lever, the extent of motion communicated
to the bell-crank lever will be greater or less..
Secondly. Our improvements consist in the employment of a spring in combina-
tion with a weight for counterbalancing the box lever.

page_text: Thirdly. Our Invention relates to a new construction of joint for jack rods, dis-
pensing with the use of rivets. In one portion of the jack rod, say, the hook, are
formed two slots forming parts of a circle, and at the opposite end of each slot is an
enlargement to admit of two projections formed on the end of the jack lever. The
hook round the slots is countersunk, so that the projections do not extend beyond 5
the face of the hook. A pin is also cast in the centre of the lever, which enters a
hole in the hook, serving as a pivot or centre to work upon.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Bywater and Charles Bedford in the Great Seal Patent
Office on the 3rd August 1878.
JAMES BYWATER, of the Firm of Messrs. Pearson and Spurr, of Birstal, in the
County of York, Machine Makers, and CHARLES BEDFORD, of the same Place,
Mechanic. "IMPROVEMENTS IN LOOMS FOR WEAVING, AND IN APPARATUS EMPLOYED
"
THEREIN."
This Invention relates,-
Firstly. To improvements in looms for which Letters Patent were granted to
William Pearson and Hervey Bradbury, dated April 3rd 1871, No. 881, in which
the notched rod for raising the shuttle boxes is adjusted by a bell-crank lever, which
receives its motion direct from the peg-lag apparatus, the extent of this motion
varying according to the length of the peg employed. In cases where more than
two boxes are required this method of indicating is uncertain and irregular, and the
object of this part of our Invention is to remedy these defects. For this purpose the
peg-lags are caused to operate upon a series of horizontal levers, to the ends of
which are fastened by wires the ends of a series of hooked rods attached to the end
of the bell-crank lever above mentioned. The peg-lags raise the horizontal levers,
and at the same time the hooked rods, bringing the hooks thereon in contact with a
series of pegs or pins on a rocking lever which receives a constant regular motion
from the crank shaft, and according as the hook is engaged with a pin nearer to or
further from the fulcrum of the rocking lever, the extent of motion communicated
to the bell-crank lever will be greater or less.
In order that our Invention may be more fully understood, we herein give
reference to the accompanying Sheet of Drawings illustrative thereof.
Fig. 1 represents the first part of our Invention. A is the bell-crank lever which
adjusts the notched rod for raising the shuttle boxes, as described in the Specifi-
cation of Patent herein-before referred to. Instead of this lever being actuated
directly by the peg-lags B, the said peg-lags are caused to lift a series of horizontal
levers C to which are attached by wires D a series of hooked rods E attached to the
end of the bell-crank lever A, and when the rods are thus lifted the hooks a thereon
are brought into contact with the pins c on the rocking lever F, which receives its
motion through lever G and rod H from the jacquard lever J. It will be readily
seen that according as the hooked rods engage with a pin nearer to or further from

page_text: the fulcrum of the lever F the extent of motion communicated to the bell-crank
lever A will be greater or less.
Secondly. Our Invention relates to a new construction of joint for jack rods, dis-
pensing with the use of rivets, which is illustrated in Figs. 2, 3, 4, 5, and 6.
In one portion of the jack rod, say, the hook K, are formed two slots e, forming
parts of a circle, and at the opposite end of each slot is an enlargement or openingto
admit of two projections f formed on the end of the jack lever L. The portion of the
hook round the slot is countersunk, as shewn in Fig. 3, where the shaded part
indicates that a portion of the metal has been cut away in order that the projec-
tions may not extend beyond the face of the hook. A pin g is also cast in the
centre of the lever, which enters a hole h in the hook, serving as a pivot or centre to
work upon.
In witness whereof, I, the said James Bywater, for and on behalf of myself
and the said Charles Bedford, have hereunto set my hand and seal, this
Thirty-first day of July, in the year of our Lord One thousand eight
hundred and seventy-eight.
Witness,
J. W. TASKER,
Patent Agent,
Halifax.
JAMES BYWATER. (L.S.)