Improvements in the Construction of Jacquard Machines used in Looms for Weaving.
Year: 1891

page_text: Date of Application, 1st July, 1891
Complete Specification Left, 1st Apr., 1892-Accepted, 7th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Jacquard Machines used in
Looms for Weaving.
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:-
This invention relates especially to Jacquard machines wherein hooks with
double peaks are employed, and "griffes
which instead of consisting of a frame
carrying several knives fixed thereto are made so that each knife can be lifted
independently of the others.
These knives are cast or formed in one piece with two vertical rods square or
rectangular in section, sliding in notches in the fixed frame work and provided
with hooks at their upper ends, these hooks being caught (or missed) as required
by movable projections on the lifting frame.
Our invention is intended specially to simplify and improve the construction of
such machines, but it will be observed that it is also partly applicable to the
construction of other Jacquard machines.
In the first place we make the double peaked hook of one piece of wire bent
into the usual form of a single peaked hook but continued, where the single hook
ends (ie. at the hook which rests on the resting bar) by bending it back to touch
the back of the hook and carrying it up to the peak where it is bent in an
opposite direction to form a double hook. The two ends of the wire are soldered
together at this point and at the point where they first touch each other and if
desired half way between these two points.
The space formed by the opposite bending of the two ends of the wire to form
a double peak may be filled up with solder and formed into a conical point if.
found requisite to prevent "crowning."
Instead of making the double peaked hook of one length of wire as above
described we may form it of one piece bent like a single hook and the second
peak soldered thereto and carried down to the resting hook where it is again
soldered to the first part. By either of the above methods the double peak is much
stronger than has hitherto been the case where a short tapered piece of wire has
been fixed at the end of an ordinary hook to form the second peak.
The lintel frames" of Jacquard machines have hitherto been made either all
of wood or all of metal. In the first case they were tenoned and mortised
together to make the channel section required and in the second case it was very
difficult to make the holes correspond to fix the vertical wires truly through the
two flanges of the channel. By our improvement we make the ends and one
flange of cast metal and we fix a wooden flange across from one end to the other.
The bars which support the needles are carried by two wooden end pieces dropped
loosely into the frame formed as above described, between the two flanges, and by
a central wooden cross strip which may be prolonged behind the wooden flange of
the frame.
The vertical wires being passed through the two flanges keep the bars in place.
Another part of our invention relates to the "griffes" before mentioned.
Instead of making the hooks and the knives all in one piece as before we make
the former separate from each other and notched in an inclined direction at the
point where the knife is fixed thereto by rivets or otherwise, the said knife being
in the form of a flat bar inclined according to the incline of the notches in the
hooks.
The latter are of round section and slide in circular holes in the fixed frame.

page_text: This griffe" will be more simple and economical in construction and will work
more evenly and steadily than that above described.
Dated this 29th day of June 1891
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Construction of Jacquard Machines used in
Looms for Weaving.
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:-
.
This invention relates especially to Jacquard machines wherein hooks with
double peaks are employed, and griffes" which instead of consisting of a frame
carrying several knives fixed thereto are made so that each knife can be lifted
independently of the others.
These knives are cast or formed in one piece with two vertical rods square or
rectangular in section sliding in notches in the fixed frame work and provided with
hooks at their upper ends, these hooks being caught (or missed) as required by
movable projections on the lifting frame.
Our invention is intended specially to simplify and improve the construction of
such machines but it will be observed that it is also partly applicable to the
construction of other Jacquard machines, and in order that the said invention may
be clearly understood we have annexed hereunto a sheet of drawings illustrative
thereof and marked the same with figures and letters of reference corresponding
with those in the following description.
In the first place we make the double peaked hook of one piece of wire as shown
at Fig. 1 bent into the usual form of a single peaked hook a but continued, where the
single hook ends (ie. at the hook a¹ which rests on the resting bar) by bending it
back to touch the back of the hook at a² and carrying it up to the peak where it
is bent in an opposite direction at a to form a double hook. The two ends of the
wire are soldered together at this point a³ and at the point a² where they first
touch each other and if desired half way between these two points.
The space formed by the opposite bending of the two ends of the wire to form
a double peak may be filled up with solder and formed into a conical point as seen
at a if found requisite to prevent "crowning."
Instead of making the double peaked hook of one length of wire as above
described, we may form it as shown at Fig. 2 of one piece bent like a single hook b
and the second peak soldered thereto and carried down to the resting hook 1,2
where it is again soldered to the first part. By either of the above methods the
double peak is much stronger than has hitherto been the case where a short
tapered piece of wire has been fixed at the end of an ordinary hook to form the
second peak.
The "lintel frames" of Jacquard machines have hitherto been either made all
of wood or all of metal. In the first case they were usually tenoned and mortised
together to make the channel section required, and in the second case it was very
difficult to make the holes correspond to fix the vertical wires truly through the
two flanges of the channel. By our improvement we make the ends c and one
flange of cast metal as seen in elevation Fig. 3 section Fig. 4 and plan Fig. 5
and we fix a wooden flange d across from one end to the other. The bars e which
support the needles may be carried by two wooden end pieces dropped loosely
into the frame formed as above described between the two flanges c and d and by

page_text: a central wooden cross strip 2 which may be prolonged behind the wooden flange
of the frame.
The vertical wires being passed through the two flanges keep the bars in place,
and the holes c and d in the flanges c and d through which these wires pass can
thus be made to correspond with each other with the greatest accuracy.
Another part of our invention relates to the griffes before mentioned. Instead
of making the hooks and the knives all in one piece as before we make the said
hooks separate from each other as seen in front view Fig. 6 and end view Fig. 7
and notched in an inclined direction at the point where the knife k is fixed thereto
by rivets or otherwise, the said knife & being in the form of a bar (preferably flat)
inclined according to the incline of the notches in the hooks h. The latter are
of round section and slide in circular holes in the fixed frame. This griffe will be
more simple aud economical in construction and will work more evenly and steadily
than that above described.
When the griffe is required to rest at a certain position in the machine other
than on the bottom plate in place of fixing a collar on the griffe rods, as usual for
this purpose as shewn at Fig. 8 we may reduce the lower end of the rod 'as seen
at Fig. 9 thereby forming a shoulder mat the required place on the said rod.
It will be evident that the various improvements above described may be
combined or used separately.
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 improvements in Jacquard machines substantially as hereinbefore
described and illustrated by the annexed drawings.
2. The improved construction of double hook soldered together at (or from)
the peak and at (or to) the hook which rests on the resting bar substantially as
hereinbefore described and illustrated by Figs. 1 and 2 of the annexed drawings.
3. The improved lintel frame constructed substantially as herein before described
with reference to Figs. 3 4 and 5.
4. The improved construction of griffe substantially as herein before described.
Dated this 21st day of March 1802
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.