Improvements in Shedding Apparatus for Looms for Weaving.
Year: 1892

page_text: Date of Application, 3rd Mar., 1892-Accepted, 25th June, 1892
COMPLETE SPECIFICATION.
Improvements in Shedding Apparatus for Looms for Weaving.
I, JOSEPH KAUFFMANN, of 36, Langelaube, Hanover, in the Empire of
Germany, Merchant, 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:-
In lieu of producing a pattern in weaving by means of "Jacquard cards," in this
invention, the pattern is woven directly from the pattern sheet containing it.
Whilst the transferring of the pattern from the pattern sheet onto the goods is
performed as usual through raising and lowering the warp threads, the movement
in itself is effected by connecting or disconnecting an electric current.
And in order that my invention may be more fully understood I have caused to
be appended hereunto one sheet of drawings marked with letters of reference
indicating like parts in the various figures.
Fig. is a side view of the arrangement for transferring the pattern from the
pattern sheet to the loom.
Fig. 2 a plan thereof.
Fig. 3 shows the working of the warp threads in another manner than that shown
in Fig. 1.
In carrying out my invention and referring to the figures generally, a is the
metal roller mounted in a non-conducting support. Above this roller moves an
endless pattern sheet b, formed of non-conducting material on which is marked by
perforation the pattern.
The roller a is connected with the one pole of an electric source whilst the other
pole ends in a row of contact springs c which rest on the pattern sheet and are
connected with a corresponding number of magnets. Now if the roller a is set in
rotation, the pattern sheet is moved with it and its several perforations which form
the pattern, permit the several contact springs c to come into contact with the
roller a. During the movement of the pattern sheet 6, the current is always closed
where the free end of the springs centers a perforation and thereby comes into
contact with the roller a. The current thus cut off passes through the magnets d
and attracts the anchor e. The anchors e, are connected with the warp threads of
the loom, in any suitable manner and the warp threads thereby themselves raised
and a pattern produced in the fabric exactly in accordance with that on the pattern
sheet b. In lieu of employing magnets d and anchors e, the respective movements
may also be effected by means of selenoides or the like. In the drawing annexed
the anchors e are shown, connected with double armed levers f, f, the free ends of
which engage direct the warp threads.
It will be evident that this may also be effected in any other way.
In lieu of a roller a, which is conductive, a non-conductive one may be used and
A conductive pattern
in lieu of a non-conductive pattern sheet a conductive one.
sheet may also be formed by dispensing with the perforations aforesaid and
furnishing it with non-conductive raised surfaces of lac or the like.
The conductive springs c consist each of a strip of metal bent inwards at its free
end, whilst its other end is fitted into a non-conductive board.
The substantial utility of this invention consists, that the large number of cards
for the production of a pattern may be dispensed with and only one pattern sheet is
required and that the pattern formation can be separated as may be desired, as the
electric connection between the contact springs and the magnets may be made as
long as desired and one apparatus will serve simultaneously for several looms as
there may be several currents running from each contact spring.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim, is―
An apparatus for the production of woven patterns, in which the formation of
the shed is effected in such a way that the warp threads are raised and lowered
direct after a pattern sheet, by means of an electric current, substantially as and for
the purpose set forth.
Dated this 2nd day of March 1899
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.