Improvements in Jacquard Apparatus.
Year: 1894

page_text: Date of Application, 26th Oct., 1894
Complete Specification Left. 26th July, 1895-Accepted, 7th Sept., 1895
Improvements in Jacquard Apparatus.
We WILLIAM FIELDING and HENRY ARTHUR FIELDING, both of Sycamore
Street, Oldham Road, Manchester, in the County of Lancaster, Jacquard Machine
Manufacturers, do hereby declare the nature of this invention to be as follows :-
The principal object of this invention is to construct simple and efficient
mechanism for producing a 'shed' by raising part of the Jacquard hooks and
lowering the remainder by which means a greater speed can be obtained than on an
ordinary single lift machine, part of the invention can however be applied to
Jacquard apparatus of known construction.
For the purpose of our invention we use one set of hooks and needles as usually
employed in a single lift machine, the books to be raised being selected in the
ordinary way and those selected being lifted by the "griff," but the remainder are
simultaneously lowered by the bottom plate which is movable and not stationary as
in the single lift and other Jacquard machines ordinarily employed.
Our machine is made with two pairs of "griffe" rods, arranged (side by side as
in a double lift machine) one pair for the "griff" and the other pair for the bottom
plate and thus the levers for actuating the "griff" and the bottom plate can be
mounted in bearings as usual for a double lift machine; one lever is raised as the
other is lowered, and vice versa.
It will be evident that by these means we are able to weave at a higher speed
than on single lift machines as the distance traversed by each hook in opening the
shed is only one half the usual distance. For example in a single lift machine
the hooks would be lifted say four inches, and on our "rise and fali" jacquard the
selected hooks would be lifted 2 inches the remainder of the hooks being lowered
two inches simultaneously.
When required we combine with such "rise and fall" Jacquard apparatus an
auxiliary set of needles and levers controlling the ordinary jacquard in order to
weave cross borders when desired.
The levers for this purpose may be made by doubling a straight piece of wire
which about half way is turned into a hoop or curve resting upon a rod or bar
which is either round or rounded at the upper side. This bar serves therefore both
as a fulcrum for the levers and as a support for the same, any lever which requires
to be removed needs only to be raised to disengage it from its fulcrum.
A further improvement relates to the construction of the spring box which is
usually made of wood with holes bored quite through the same forming sockets for
the springs; a side flange is formed on each edge at the back of the spring box and
through these flanges are passed wires which cross the ends of these holes or sockets
and form abutments for the outer ends of the needle springs.
This construction weakened the spring-box and entailed considerable labor in
boring the flanges accurately for the cross wires or points.
According to this invention the back of the box is left plain or is provided with
a flat strip of wood so that the ends of the holes or sockets are solid and this
improved construction not only renders the spring box more solid but also reduces
the cost of construction and prevents the accumulation of dust or fluff upon the
springs from the outside of the spring box. ·

page_text: The improved spring box and the cross border levers above described may
evidently be applied to other Jacquard machines than those above described.
Dated this 25th day of October 1894.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.
We WILLIAM FIELDING and HENRY ARTHUR FIELDING both of Sycamore
Street Oldham Road, Manchester, in the County of Lancaster, Jacquard Machine
Manufacturers, 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 principal object of this invention is to construct simple and efficient mechanism
for producing a shed by raising part of the Jacquard hooks and lowering the
remainder by which means a greater speed can be obtained than on an ordinary
single lift machine, part of the invention can however be applied to Jacquard
apparatus of known construction.
The nature of our said invention and the manner in which the same is to be
performed or carried into practical effect will be readily understood on reference to
the two sheets of drawings hereunto anuexed and the following explanation
thereof.
Fig. 1 on Sheet 1 of the drawings is an end elevation and Fig. 2 a vertical section
of 80 much of a Jacquard machine as is necessary to illustrate our invention.
The remaining figs. (on Sheet 2) are detail views hereinafter more particularly
referred to.
For the purpose of our invention we use one set of hooks a and needles as usually
employed in a single lift machine, the hooks to be raised being selected in the
ordinary way and those selected being lifted by the "griff" b, but the remainder a¹
are simultaneously lowered by the bottom plate which is morable and not
stationary as in the single lift and other Jacquard machines ordinarily employed.
Our machine is made with two pairs of "griffe "rods d and d' arranged side by
side (as in a double lift machine) one pair for the "griff" and the other pair for
the bottom plate c and thus the levers e and e¹ for actuating the griff and the
bottom plate can be mounted in bearings as usual for a double lift machine; one
lever is raised as the other is lowered, and vice versa.
It will be evident that by these means we are able to weave at a higher speed
than on single lift machines as the distance traversed by each hook in opening the
shed is only one half the usual distance. For example in a single lift machine the
hooks would be lifted say four inches, and on our "rise and fall" jacquard (see
Fig. 2) the selected hooks a would be lifted two inches, the remainder of the hooks a¹
being lowered two inches simultaneously.
When required we combine with such "rise and fall" Jacquard apparatus an
auxiliary set of needles f and levers 9 controlling the ordinary jacquard in order to
weave cross borders when desired, as shewn by the diagram Fig. 3.
The levers g for this purpose may be made by doubling a straight piece of wire
which, about half way, is turned into a hook or curve resting upon or partly
encircling a rod or bar h which is either round as shewn or rounded at the upper
side. This bar serves therefore both as a fulcrum for the levers y and as a
support for the same, any lever which is required to be removed needs only to be
raised to disengage it from its fulcrum. These levers may be made in any suitable
way; we show two of the most convenient forms at Fig. 6.
A further improvement (see Figs. 4 and 5) relates to the construction of the

page_text: spring box which is usually made of wood with boles bored quite through the same
forming sockets for the springs, a side flange is formed on each edge at the back of
the spring box, and through these flanges are passed wires which cross the ends of
these holes or sockets and form abutments for the outer ends of the needle springs.
This construction weakened the spring-box and entailed considerable labor in
arranging for and boring the flanges accurately for the cross wires or points.
According to this invention the back of the box is left plain or is provided with
a flat strip of wood i so that the ends of the holes or sockets are solid, and this
improved construction not only renders the spring box more solid but also reduces
the cost of construction and prevents the accumulation of dust or fluff upon the
springs from the outside of the spring box.
The improved spring box and the cross border levers above described may
evidently be applied (either singly or in combination) to other Jacquard machines
than those above described.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The combination with the griffe of a single lift dobby of a movable bottom
plate whereby the effect of a double lift may be obtained, some of the needles being
raised and the remainder lowered substantially as hereinbefore described and
illustrated by Figs. 1 and 2 of the drawings annexed.
2. In Jacquard machines provided with an auxiliary set of needles and levers
controlling the ordinary jacquard so as to weave cross borders when desired, the
formation of such levers with a hook at or near the centre substantially as
herein before described and illustrated by Figs. 3 and 6.
3.. The method of forming the spring box with a closed back substantially as and
for the purposes hereinbefore set forth and as illustrated by Figs. 4 and 5 on Sheet 2
of the annexed drawings.
Dated this 25th das of July 1895
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.