A New Mechanical Appliance for A-la-bar Looms, for Producing Chenille with Twisted or Plaited Warp Threads.
Year: 1889

page_text: Date of Application, 18th July, 1889
Complete Specification Left, 18th Apr., 1890-Accepted, 18th July, 1890
PROVISIONAL SPECIFICATION.
A New Mechanical Appliance for A-la-bar Looms, for Producing
Chenille with Twisted or Plaited Warp Threads.
WALTER BARNWELL Stoke Green, Coventry, Trimming Manufacturer. I do hereby
declare the nature of this invention to be as follows:-
A new mechanical appliance for twisting or plaiting the threads of warp, as the
fabric is being woven.
The warp is passed through needles fixed to two wooden shafts, the top shaft is made
to rise & fall by means of tappets & springs, while the bottom shaft is made to work
from right to left, by means of a cam & lever fixed to the iron shafting & a spring.
The wooden shafts work in grooved brackets & cannot get out of position, the action
twists or plaits the warp every time the weft goes across.
Dated this 18th day of July 1889.
WALTER BARNWELL.
COMPLETE SPECIFICATION.
A New Mechanical Appliance for A-la-bar Looms, for Producing
Chenille with Twisted or Plaited Warp Threads.
I WALTER BARNWELL late of Stoke Green Coventry now of 15 Bolsover Gardens
Sherwood Rise Nottingham Trimming Manufacturer 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 warp is passed through metalic healds A which are fixed on shafts B. The
shaft B is made to rise and fall by means of tappett C and treadles D while the
shaft B** works from right to left, governed by a cam E working on shafting F ; and
a lever G with bar H and spring I attatched to the shaft, which is kept in position by
brackets J. This action causes the warp threads to change every time the weft is drawn
across, thereby making them fast, the ordinary hoalds are dispensed with.
The healds A are cast in moulds, as close together as can be, to work easily; &
the moulds are then screwed on to the shafts-the length of the healds depend upon
the width of shed required.
Shaft B**, rises & falls by means of tappets C and treadles D in the ordinary way,
but each time it rises or falls, it changes its position, first to right then toleft-the top
row of healds falling first on one side of the threads and then on the other. The
means for governing shaft B**, are the cam, lever spring & brackets. By cam E, on
shafting F, half a revolution causes the shaft Bxx to move to the right, the next half
revolution allows the spring to pull the shaft the other way, each time the shaft B××
moves either to the right or left, the top shaft falls; the shute or weft going across
immediately before each change.
The distance the shaft B** is allowed to move to the right & left, is regulated to
the same distance that there is between the healds.
-
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is:
1st. That by my invention I am enabled to make in a-la-bar looms, chenille requiring
a plaited or twisted warp, which cannot be produced in looms without the addition
of my invention.

page_text: 2nd. That this effect is produced by the action of the cam, levers & springs (heretofore
described), on the shafts, and the metalic healds and brackets.
3rd. That this mode of manufacture in power looms is quite new and is far more
simple than the working of binding threads as now used for fastening the edge or
binding warp threads together.
Dated this 17th day of Annil 1800
WALTER BARNWELL.