IMPROVEMENTS IN LOOMS
Year: 1884

page_text: I JOSEPH THORNTON of Shipley in the County of York Managing Overlooker do
hereby declare the nature of my said invention for "IMPROVEMENTS IN LOOMS
to be as follows:-
This invention relates to heald engines and the object is to dispense with the
heald wire and to substitute more permanent apparatus and to avoid the friction
and wear of the warp upon the beam of the going part the improvements being
applicable to jacquard mechanism generally.
I employ for each upright knife a bar notched or barbed at its upper end which
notch is received and rests upon a draw bar having rising and falling motion
imparted thereto from the eccentric shaft the draw bar carries up the upright
knives whereon a second notch or barb formed on the lower part of the knife is
received on a cross stationary bar where the knives remain, and the healds are in
the raised position until the peg or pattern mechanism indicates a change, by
acting upon a needle which pushes the upright knife off its supporting bar and the
healds are drawn down by spring levers or weights.
It will be seen the healds and warp are raised and there is no further motion of
the warp until required by the pattern so that undue friction and wear of the warp
is avoided, and less power is required to work the healds.
Data LL 1
T
WALTER BRIERLEY,
Crossley Street, Halifax,
Agent for the Applicant.

page_text: I JOSEPH THORNTON of Shipley in the County of York, Managing Overlooker,
do hereby declare the nature of my said invention for "IMPROVEMENTS IN LOOMS"
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, aided by the annexed drawings:-
This invention relates to heald engines, and the object is, to dispense with the
heald wire, and to substitute more permanent apparatus and to avoid the friction
and wear of the warp upon the beam of the going part the improvements being
applicable to jacquard mechanism generally.
Such being the nature and object of my said invention the following is a complete
description of same reference being had to the accompanying drawings forming a
part of this specification in which :-
Fig. 1 is a side elevation in section of dobby.
Fig. 2 is a front elevation.
Fig. 3 is an enlarged detail.
According to this my invention, I employ for each upright knife 1, a bar notched
or barbed at its upper end 2, which notch is received and rests upon a draw bar 3,
having rising and falling motion imparted thereto, from the eccentric shaft of the
loom, by the rod 4, the draw bar 3. carries up the upright knives 1, whereon a
second notch or barb 5, formed on the lower part of the knife 1, is received on
a cross stationary bar 6, where the knives remain, and the healds are in the raised
position, until the peg or pattern mechanism 7, indicates a change, by acting upon
a needle 8. which pushes the upright knife 1, off its supporting bar 6. and the
healds are drawn down, by levers 9. 10. and 11. or by weights-downward motion
of the levers 9. 10. is obtained; from the cords or hooks 12, connected with the
healds and the usual weights, and springs connected there with, as is well understood,
the upward motion of levers 9. 10 is through the knife 1 and bar 3-the lever
arms 11. are stationary and fixed by nut and bolt, in such position, that the motion
of levers 9. and 10. will carry the barb or notch 5. fairly over and upon the bar 6.
It will be seen, that when the healds and warp are raised, there is no further
motion of the upright knives, nor of the warp, until required by the pattern being
woven, so that undue friction, and wear of the warp is avoided, and less power
required to work the healds, and heald engine.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
The knives 1. stationary bar 6 levers 9. 10 and 11 combined, and arranged, and
operating in manner, and for purpose herein described and substantially as
illustrated by drawings annexed.
Dated thin orth dre of October 1001
Dated this 25th
h day of October 1984
JOSEPH THORNTON.
By his Agent,
Walter Brierley,
Crossley Street, Halifax.