Improvements in the Construction of Jacquard Machines.
Year: 1893

page_text: Date of Application, 10th Mar., 1893—Accepted, 22nd Apr., 1893
COMPLETE SPECIFICATION.
Improvements in the Construction of Jacquard Machines.
I THOMAS JAMES CROSSLEY of Middleton Junction near Oldham in the County
of Lancaster, Jacquard Machine Maker, do hereby declare the nature of this inven-
tion 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 these Jacquard machines which are made with two
pattern barrels or cylinders and cards the one to weave the main part of the
pattern, and the other to weave cross borders or headings, my object being to
simplify the apparatus and to afford facilities for changing from one barrel or
cylinder to the other without stopping the loom.
In order that my invention may be clearly understood I have annexed hereto
two sheets of drawings illustrative thereof and have marked the same with
figures and letters of reference corresponding with those in the following
description.
Fig. 1 Sheet 1 shews a section through one of my improved jacquards and
illustrates the manner in which the needles act on the hooks.
Fig. 2 Sheet 2 is a side elevation of the same shewing the means for alternately
actuating either one of the two pattern barrels or cylinders.
I employ a griffe with knives a (Fig. 1) moved in the ordinary manner, and I
use two sets of needles b and 6' actuated by the cylinders c and c' respectively.
I connect the corresponding needles in each set band 6' by a crank eye or loop
to the same jacquard hook passing through them as shown, the cranks or eyes 1
and 1* on the needles and are connected to the hook d', 2 and 2* to d³, 3 and 3*
to d and so on.
Thus when the cylinder c is in action, the cranks eyes or loops 1*, 2* 3* &c. of
the needles 6' become fixed fulcra upon which the hooks are moved see d' on Fig. 1,
and when the cylinder c¹ is in action the cranks eyes or loops 1, 2, 3 &c. of the
needles become the fulcra as shewn by the hooks d and in order to allow for thus
springing the hooks I make the bend at the lower end of the hook wider and the
slots in the grid a longer than usual.
I use a spring box e as usual for the needles b but the spring or resiliency of the
hooks is strong enough to enable me to dispense with the use of a spring box for
the needles b¹.
Thus only one set of hooks are required for both sets of needles and no connecting
levers or links as hitherto employed are needed.
The cylinders c and c¹ are put in action in the following manner, each is mounted
as usual on an arm f and f¹ respectively see Fig. 2.
The arms ff are connected by links g, h, and g', h¹, to either end of a hori-
zontally mounted lever i i, pivotted in the centre at *. The links g g' are provided
with notches or catches substantially as shewn by which they can be set in motion
by pins or projections k k¹ on a vertically mounted lever pivotted at k² and actuated
by a link and lever kk by means of a rod k worked by a crank or eccentric on
the main shaft of the loom.
The end of the lever is connected by a wire rod and spring m to a fixed
bracket n and the end is connected by a cord and spring m to a setting
lever pivotted to the framing of the loom or other fixture within convenient
reach of the weaver.
When the lever n' is set in the position shewn on the drawings Fig. 2 the
spring m¹ holds it up and the spring m pulls down the end i of the lever and brings
the link g into position to he worked by the pins k and so puts the cylinder c into
action, but when the lever n' is lowered as shown by the dotted line the spring m¹
1

page_text: thereby
which is stronger than m overcomes the latter and pulls down the end
putting the link g¹ into position to be worked by the pin k¹ and setting the
cylinder c¹ in action.
The lever n'is locked in the last named position by the pin n² which is caught by
the hanging catch lever n³.
In order to prevent the barrel or cylinder which is out of action from being
shaken and coming accidentally into contact with its needles we prefer to fix to the
arms and f¹ one or more springs the free ends of which rest against projec-
tions o fixed to the frame of the Jacquard machine, the springs f" are strong enough
to prevent accidental vibration of the arms ff¹ but yield to the action of the
links g or g¹.
It will be understood that the links 9, g, h h and ³ the lever i ik' and k k¹ are
by preference mounted at both sides of the machine.
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 :-
1. The combination of two pattern barrels or cylinders and two sets of needles
acting directly upon one set of hooks substantially as hereinbefore described and
illustrated.
2. The improved mechanism substantially as hereinbefore described and illustrated
by the accompanying drawings for changing the weaving from one pattern barrel or
oylinder to the other.
Doted this 0th dow of March 1802
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.