Year: 1887

page_text: Date of Application, 10th Feb., 1887
Complete Left, 10th Nov., 1887
Complete Accepted, 13th Dec., 1887
We EDWIN WOODHOUSE, of Farsley, near Leeds in the County of York,
Manufacturer, and JOSEPH JOHN GRIMSHAW of High Street, Farsley aforesaid,
Loom Tuner, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in looms for weaving, and its object is to
provide means for the warp beam to be reversed or turned back, without disarranging
the letting-off motion, or mechanism regulating the tension of the warp.
Our improvements are hereinafter described as applied to a warp beam fitted with
the common cord and weight tension mechanism, but such improvements may with
equal facility be applied to various other letting off motions.
The improvements consist in connecting the drums or metallic caps on the ends of
the beam, round which the weighted cords are wound, to the beam by pawl and
ratchet connections or their equivalent, in such a manner that the beam is free to be
turned back without actuating such drums.
We preferably carry out our invention in the following manner. The said drums
are made of a suitable form to enclose a ratchet wheel rigidly fixed to the end of the
beam or its arbor, and the drums are loosely mounted over such ratchet wheels. A
pawl or pawls mounted inside each of the drums is, or arc, arranged to engage with
the teeth of the ratchet wheels, which pawls during the forward motion of the beam
actuate such drums, but permit the beam to be turned back without moving them or
otherwise disarranging the tension mechanism.
Th: 1.
_ 1007
DRACUP & NOWELL,
Bradford, Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in or Connected with Let-off Motions for Looms.
We, EDWIN WOODHOUSE,_ of Farsley, near Leeds, in the county of York,
Manufacturer, and JOSEPH JOHN GRIMSHAW, of High Street, Farsley aforesaid,
Loom Tuner 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 improvements in or connected with the let-off motions of
looms for weaving, and its object is to enable the warp beam to be turned back or
reversed to adjust the tension of the warp after the loom has been turned back or when
otherwise required without disarranging the let-off motion.
Our improvements are herein after described as applied to a warp beam fitted with
the common cord and weight let-off motion, but such improvement may with equal
facility be applied to various other let-off motions.
The said improvements consist in connecting the drums or metallic caps on the
ends of the beam round which the cords are wrapped or to which the friction is
applied to the beam by pawl and ratchet connections or their equivalent in such a
manner that the beam is free to be turned back without actuating such drums
or caps.
In order to fully describe our 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 an elevation of a warp heam with our improvements applied
thereto the said drum being shown in section. Figure 2, is an end view of the same,
and figure 3 is a cross section through the broken line a, b in the first figure.
The drum A upon which the cord B of the let-off motion is wrapped is loosely
mounted upon the end of the beam C over the ratchet wheel D which is rigidly fixed
by the key J to the end of such beam. The plate E forming one side of the drum A is
made separate to allow said drum to be placed over the ratchet wheel D and such
plate is afterwards secured to the drum by the bolts F. Two pawls G are mounted on
two of the bolts F inside the drum A and the springs K keep the mengaged with the
ratchet wheel D, which prevents the beam (being rotated in one direction without
the drum A but such beam may be turned in the opposite direction to wind up the
warp without rotating the drum A thus interference with the let-off motion is
avoided.
It is obvious that our improvements may be applied to other descriptions of
let-off mechanism by mounting the part to which the friction is applied or other
part controlling the feed of the warp upon the beam in a similar manner to the
drum herein described.

page_text: Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare what we
claim is :
1. The improvements in let-off motions herein described adapted to enable the
warp beam to be turned back without disarranging the let-off mechanism, substantially
as herein shown and described and for the purpose specified.
2. The combination with a warp beam, of a ratchet wheel rigidly fixed to said
beam, and a loose drum mounted on such beam having a pawl or pawls adapted to
engage with said wheel, substantially as herein shown and described and for the
purpose specified.
... nu
T
1007
DRACUP & NOWELL,
Bradford, Agents.