IMPROVEMENTS IN JACQUARD FRAMES, IN THE SLIDES OR BOXES AND GUAGING BITS, TO ENABLE A GREATER NUMBER OF SPRING DROPPERS TO BE USED IN THE WIDTH WITHOUT INCREASING THE NUMBER OF CYLINDERS, AND FOR IMPROVEMENTS IN THE CONSTRUCTION OF THE FRAME GENERALLY
Year: 1876

page_text: PROVISIONAL SPECIFICATION left by William Benson and Henry Hickton
at the Office of the Commissioners of Patents on the 11th July 1876.
WILLIAM BENSON, of Robin Hood St., in the Town and County of the Town
of Nottingham, Engineer, and HENRY HICKTON, of Long Eaton, in the County of
Derby, Lacemaker.
"IMPROVEMENTS IN JACQUARD FRAMES, IN THE SLIDES OR
BOXES AND GUAGING BITS, TO ENABLE A GREATER NUMBER OF SPRING DROPPERS
TO BE USED IN THE WIDTH WITHOUT INCREASING THE NUMBER OF CYLINDERS,
AND FOR IMPROVEMENTS IN THE CONSTRUCTION OF THE FRAME GENERALLY."
Our Invention relates to the apparatus that is attached to machines for making
lace and other goods, and are known as jacquards, and consists―
Firstly. In the method of arrangement and construction of thin bars of metal
known as slides or boxes, whereby a greater number of droppers may be used in
the width without increasing the number of cylinders.
For this part of our Invention each slide or box is fitted with two projections,
each alternate slide or box having the projections on opposite sides, which may be
distinguished by stating that the slides or boxes are right and left handed, the pro-
jections on the right hand slide or box being placed between the projections on the
left hand slide or box, so that they form four points from which the slides or boxes
may be driven. The slides or boxes are also made alternately long and short, the
long ones being partially cut away to allow of passing under the screw arrangement
(called the guaging bits) of the small ones.
The bars to be operated upon are attached to the sliding nuts, which are adjust-
able by a wrench fitting on the square end of the guage secrew, the sliding nuts
fitting on the ends of each of the long and short slides or boxes; by this arrange-
ment the work is nearly in a line with the centre of the slides or boxes, thereby
insuring a direct action.
The perforated metal plates forming a guide for the droppers (called sleys), and
also the perforated cylinder in which the ends of the droppers work, are of the
ordinary description but of greater width to allow of a greater number of droppers
being used, which droppers are divided into two sets over each cylinder, one set
taking a curved or angular position to the right hand, the other set taking a curved
or angular position to the left hand.
Secondly. Our Invention relates to improvements in the construction of the frame
generally, and consists of the employment of two slides moving on each side of a
Price 2dl

page_text: dividing web or partition on each standard; the supports or guides to the slides
being of angular form and screwed to the top and side of the standard, thus econo-
mising space and providing substantial guides and a ready means of taking up
the wear.
The driving plates for giving motion to the slides or boxes are made double, each
one having two driving faces. These driving plates (which may be made either
double or single) have recesses at the back of the driving faces to allow of the pro-
jections on the slides or boxes going underneath.
The bracket or frame for carrying the sleys for slides or boxes is cast in one piece,
forming a stay to the top of the standards to which it is attached, and enabling the
whole of the slides or boxes and sleys to be fitted, fixed, or removed together.
The brackets for carrying the dropper guides or sleys are attached to the under-
side of the slides that give motion to the driving plates (also they form the bearing
or guide for the spindle carrying the cylinder), we prefer to cast each pair of
brackets together by a frame and to which frame the perforated plates or sleys may
be fastened.
The brackets for carrying the rocking shaft to which are fastened the levers that
give motion to the cylinders are cast in one piece, and form the bottom stay to the
frame.
On one side of the jacquard. the spindle which forms the guide and also the
bearing carrying one end of the cylinder has a projecting arm for carrying a lever
that forms part of the racking on motion, also a short elongation under the centre
of the spindle to which the links connecting the rocking shaft levers to the cylinder
are attached by means of a joint pin; also an arm projecting from the side of the
spindle to which the spring (as in ordinary use) can be attached in a direct form,
the whole being made in one piece.
The motion to this machine is received in the ordinary way, viz., from a main
shaft on which are fastened four cams which give motion to the slides to which the
driving plates are attached; an eccentric is also fastened on the same main shaft
which gives motion to a rocking shaft for working the two cylinders.