IMPROVEMENTS
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by the said Abraham Place at the Office
of the Commissioners of Patents on the 23rd November 1881.
ABRAHAM PLACE, of Macclesfield, in the County of Chester.
IN JACQUARD MACHINES."
"IMPROVEMENTS
This Invention relates to the construction of what are known as "jacquard
machines," used in connection with looms for weaving, for operating the shedding
of the warps in such a manner as to produce the pattern desired.
The Invention relates specially to the "cylinder catches" of such machines,
which catches give a quarter of a turn to the cylinder each time that the latter
moves to and from the needles, so as to present a fresh pattern card to the latter
at each pick of the loom, the object of the Invention being to enable the catches
when required to turn the cylinder either backwards or forwards by hand whilst
the loom itself is at rest.
Instead of pivotting these catches onto a fixed part of the frame as hitherto, I
pivot them onto a movable piece capable of being worked to and fro in a horizontal
slide by means of a bell crank lever, to the vertical arm of which it is connected.
The horizontal arm of this bell crank lever is provided with a rod, by means of
which the weaver can work the slide and catches to and fro, and thus turn the
cylinder either backwards.or forwards (according to whether the bottom or top
catch is in gear) whenever it,is required to set the pattern cards either backwards
or forwards whilst the loom is at rest and the cylinder consequently not moving to
and fro. When the cards have been thus adjusted and the loom is to be set in
notion, the weaver fixes the rod in any convenient manner, the pivots of the
cylinder catches, then remain fixed, and the catches act upon the cylinder in the
ordinary manner.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Abraham Place in the Great Seal Patent Office on the 20th May
1882.
ABRAHAM PLACE, of Macclesfield, in the County of Chester. "IMPROVEMENTS
IN JACQUARD MACHINES."
This Invention relates to the construction of what are known as "jacquard
machines" used in connection with looms for weaving, for operating the shedding
of the warps in such a manner as to produce the desired pattern.
The Invention relates specially to the "cylinder catches" of such machines,
which catches give a quarter of a turn to the cylinder each time that the latter
moves to and from the needles, so as to present a fresh pattern card to the latter at
cach pick of the loom, the object of the Invention being to enable the catches whon
required to turn the cylinder either backwards or forwards by hand whilst the loom
itself is at rest.
Such being the nature and object of my said Invention, I will now proceed to
describe in detail the manner in which the same is to be or may be performed or
carried into practical effect, and in order that the same may be clearly understood,
I have annexed hereunto a Drawing illustrative thereof, and have marked the
same with letters of reference corresponding with those in the following description
thereof.
The Drawing represents a side elevation of a "jacquard" machine with my
improvements applied thereto. a, a, is the frame; b, b, the lantern wheel; c, c, the
cylinder; and d, d, the catches.
Instead of pivotting these catches onto a fixed part of the frame a, a, as hitherto,
I pivot them onto a movable piece e, e, capable of being worked to and fro in a
horizontal slide by means of a bell crank lever f, f, to the vertical arm of which it
is connected.
•
The horizontal arm of this bell crank lever f.f, is provided with a rod g, g, by
means of which the weaver can work the slide e, e, and catches d, d', to and fro, and
thus turn the cylinder c, c, either back wards or forwards (according to whether the
bottom catch d or top catch d is in gear) whenever it is required to set (the pattern
cards either backwards or forwards whilst the loom is at rest, and the cylinder
consequently not moving to and fro, the return motion of the slide e, e, and catches
d, d', being effected by the action of the spring h, h; i, i, is a cord and spring for
holding the bottom catch d¹ in gear when it is required to reverse the cylinder.
When the cards have been thus adjusted and the loom is to be set in motion, the
weaver fixes the rod g, g, in any convenient manner, the pivots of the cylinder
catches d, d', then remain fixed, and the catches act upon the cylinder c, c, in the
ordinary manner.
Having now described the nature and object of my said Invention, together with
the manner in which the same is to be or may be performed or carried into practical
effect, I wish it to be understood that I claim as my Invention mounting the
pivots of the cylinder catches on a movable piece or slide, so that they may be
moved to and fro in order to turn the cylinder either backwards or forwards as
may be required whilst the loom itself is at rest.
In witness whereof, I, the said Abraham Place, have hereunto set my hand
and seal, this Eighteenth day of May, in the year of our Lord Oue thousand
eight hundred and eighty two.