Year: 1886

page_text: Date of Application, 6th Oct., 1886.
Complete Left, 6th July, 1887.
Complete Accepted, 9th Aug., 1887
I CHRISTOPHER LONGBOTTOM, of 27 Kirkgate, Bradford in the County of York,
Estate Agent, do hereby declare the nature of this invention to be as follows:-
This invention relates to novel, and useful, improvements in healds employed in
looms for weaving, and its object is to make such healds adjustable in order to adapt
them to any number of ends or warp threads.
For this purpose I employ an arrangement of trellised plates so pivoted together
that they are capable of uniform extension, or contraction. The said plates have holes
or guides through which the heald threads pass, and each plate in the trellis guides a
certain number of threads and as extending the trellis alters the angle of the plates,
bringing them into a more horizontal position the spaces between the, heald threads
are equally increased. The reverse operation of contracting the trellis causes the
plates to assume a more vertical position consequently the spaces between the heald
threads are equally reduced.
The heald shaft is preferably formed in two longitudinal pieces grooved in a suitable
manner to receive projections attached to the trellis. The heald threads are passed
through the guides in the trellis and up between the two longitudinal pieces forming
the shaft, and the loops are passed over a rod or carrier, preferably of some elastic
material, resting upon or between the two halves of the shaft. A metal or other
suitable cover is then placed over the top of the shaft to keep the parts together and
prevent them being injured. For further security spring clips are attached by which
the shafts are suspended.
The bottom shaft may be a duplicate of the top one or ordinary shafts may be
employed.
In order that the plates forming the trellis may be readily connected or disconnected
I employ a spring clip, a projection on which passes through the plates and secures
them together. The head of such clip is adapted to engage with the groove formed in
the shaft which may be cased or faced with metal.
The trellis may be used in combination with an ordinary heald shaft by suspending
it by hooks which hookes may be part of the spring clip or separate.
Dated this 5th day of October 1886.
DRACUP & NOWELL,
Bradford, Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Healds Employed in Looms for Weaving.
I, CHRISTOPHER LONGBOTTOM, of 27, Kirkgate, Bradford, in the County of York,
Estate Agent 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 :-
This invention relates to novel and useful improvements in healds employed in
looms for weaving, and its object is to make such healds capable of adjustment in
order to adapt them to any number of warp threads or ends.
For this purpose I employ an arrangement of trellised plates provided with holes or
guides to receive the heald threads or wires and so pivoted together that the trellis
thus formed is capable of uniform extension or contraction thereby altering or
adjusting the spaces between the said heald threads or wires engaging therewith.
To particularly describe my invention reference is to be had to the accompanying
drawing forming a part of this specification in which similar letters of reference
indicate corresponding parts in all the figures.
Figure 1 represents a front view of such parts of a heald as are necessary to
illustrate my invention in which a shaft of special construction is employed in order to
facilitate the attachment and adjustment of the trellis. Figure 2 is a section of the
same on a larger scale.
Figure 3 is a similar view to figure 1 showing the combination of my improvements
with a top shaft of ordinary construction. Figure 4 is a section of the same on a
larger scale.
Figure 5 and 6 are respectively a front and edge view of one of the trellis plates.
Figure 7 and 8 are similar views of a modified form of plate, and figure 9 is a section
of the same. Figure 10 is also a section of a further modification. Figures 11 and 12
are views of details herein after referred to.
The shaft A in figures 1 and 2 consists of a metallic cover or sheath B represented
by the black outline in figure 2 enclosing two laths C. The said laths have a
curved upper edge supporting the rod D from which the heald threads or wires E are
suspended. Such heald threads or wires pass down the space between the laths C and
through the holes or guides F in the front plates G of the trellis, a suitable distance
beneath which the mail or eye for holding the warp thread is attached or formed.
The front plates G of the trellis are connected together by the back plates H riveted
thereto so as to form the said trellis in sections of convenient length. And to enable
the said sections to be readily connected the holes J at the extremities are formed with
slots P as shown on a larger scale in figure 11, and are thus adapted to be connected
together by the clips or hooks K (one of which is separately represented in figure 12)
by which the trellis is suspended from the hollow flange L formed on the under side
of the sheath B. The hook K is provided with a horizontal pivot N adapted to fit the
hole J, and the turned up projection O on the end of said pivot is capable of being
passed through the slot P when the said hook is inverted to connect the plates, but

page_text: turning the hook to the position required for suspending the trellis places the pro-
jection O almost diametrically opposite the slot and thus clasps the end plates of the
sections thereby suspended upon the pivot N. The sections of the trellis are connected
at the lower side by means of a similar pivot to N secured to the back of the plate G
at the end of the section and adapted to be secured in a hole similar to J formed in
the lower end of the back plate H of the next section.
Each of the front plates G of the trellis is provided with a projecting edge or
flange R perforated with holes F through which the heald threads or wires are passed.
In cases where the form of the heald will not permit it to be threaded through the
holes F, slots F¹ are formed in the flange R, and after the threads or wires have
been placed in position in the slots the open ends of such slots are preferably closed,
by sliding a light tube S formed with a longitudinal slit, over the edge of the flange R
which may be slightly grooved to engage with the slit in the tube. As a modification
of this latter arrangement the edge of the flange R may be turned over to hold the
wire pin T as represented in figure 10.
The bottom shaft of the healds may be a duplicate of the one described or may be of
ordinary form. The heald threads or wires are preferably mounted independently on
the shafts, and it is obvious that extending or contracting the trellis will uniformly
adjust the spaces between such heald threads or wires.
When a shaft of ordinary construction is employed to support the trellis the hooks K
are made long enough to hook round the top of the shaft A' and thus suspend the
trellis as shown in figure 3.
Having now particularly described and ascertained the nature of my said Invention,
and in what manner the same is to be performed, I declare what I claim is :
The combination with a shaft of healds, of an adjustable trellis provided with holes
or guides adapted to engage with the healds, substantially as herein shown and
described and for the purpose specified.
Dated this 5th day of July 1887.
DRACUP & NOWELL,
Bradford, Agents.

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