Improvements in Grife Frames Used in Jacquards for Weaving.
Year: 1897

page_text: Date of Application, 22nd Feb., 1897-Accepted, 27th Mar., 1897
COMPLETE SPECIFICATION.
Improvements in Grife Frames Used in Jacquards for Weaving.
I, JOHN EDWARD WADSWORTH, of Greenside Lane, Droylesden, Lancashire,
Jacquard Machinist, 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 improvements relate to grife frames used in jacquards for weaving, and have
for object the formation of such grife frames with detachable pieces for carrying the
grifes, so as to permit of the removal of such portions of the frames when they become
worn in operation, and also to enable substitutions or renewals to be made without
disturbing the other parts of the grife frames or Jacquard apparatus.
The grife frames of an ordinary jacquard are usually constructed of somewhat thin
metal plates, the same, on each side of the jacquard being cut out at intervals, with
slots, for the reception of the .grifes which lift the hooks attached to the healds or
harness.
The grife frame is actuated by the loom so as to move up and down, and thus
carries the grifes with it; but experience shows that during this operation the
friction due to shocks given to the grife ends in the holes or slots of the frame,
in the process of time gradually wears such holes or slots, or may be grife ends,
away from their orginal shape, and consequently a loose and unsteady action of the
grifes is produced.
The manner in which I minimise the effect of this evil and accomplish my
improvements, will be better understood with the aid of the accompanying drawings,
in which
Fig. 1 is an edge view of a grife frame fitted according to my improvements, and
Fig. 2 is a front elevation thereof but only partly so fitted, while
Fig. 3 is an edge view of a portion of an ordinary grife frame.
Figs. 4 and 5 are two views, on a larger scale, of one form of parts of my
improvements, and to be described.
The same letters indicate corresponding parts wherever they occur.
In carrying out my improvements, I form the main portion of the grife frame with
separate projecting arms or fingers as shown, although I prefer to make the same of
thicker metal than is ordinarily employed, and to cast the same in malleable iron, for
the purpose of obtaining increased strength and stiffness.
The rigid projections, arms or fingers a of this frame, I make of a length suitable
for the purpose, and drill or otherwise form holes, preferably three, in and near the
outer ends of each of such projections. I then provide, for each projecting arm or
finger, a detachable plate or grife holder b, which is shown formed with lugs at its
upper part as at 6', and with a hole 62, or holes, for a bolt or set screw.
the end of this detachable grife holder b is formed a slot to receive the grife,
which may be secured therein or thereto in the ordinary or in any other suitable
manner.
At or near
This plate is fitted to the arm or projection a by means of the lugs at br
entering the corresponding holes in such arm or projection as shown in Figs. 1 and 2
and are held in place by a bolt and nut a¹ or by other similar means.
c is a grife, the ends of a number of which are shown in Fig. 2 at c¹, and the
plates are of such formation and size as to bring the grifes in their correct
position for raising the Jacquard hooks and wires when required so to do.

page_text: In this way it will be seen that when the slot or hole in a grife holder becomes
worn in use, such grife bolder can be detached, and another one bolted or otherwise
attached in its place, thus making the grife work as rigidly as before the evil
arose, and without disturbing the rest of the grifes or grife frame, or other portions
of the jacquard.
Variations in detail may be made, such as in the size and formation of the
various parts, and the materials of which they are composed, and the method of
attaching the detachable grife holders to the grife frame; and the improvements
may be adapted to frames of double as well as single lift jacquards, without departing
from the peculiar character of the invention.
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 I
claim is :-
In the grife frames of jacquards for weaving, a detachable grife holder b, provided
with means for enabling attachment to be made to the arms or projections a of the
grife frame, the other end of such holder being formed with a suitably shaped slot
or opening for receiving the end of a grife, all for the purpose and in manner
substantially as herein shown and described.
Dated this 20th day of February 1897.
WILLIAM GADD, C.E.,
64 Barton Arcade, Manchester, Agent.