Improvements in Picker Checking Appliances of Looms for Weaving.
Year: 1898

page_text: Date of Application, 8th Mar., 1898-Accepted, 9th Apr., 1898
COMPLETE SPECIFICATION.
Improvements in Picker Checking Appliances of Looms for Weaving.
We, WILLIAM CORNTHWAITE, of Balmoral Road, Lancaster, Overlooker, and
ROBERT CORNTHWAITE, of Ashfield Road, Burnley, Traveller, 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 to picker checking appliances for looms, and is designed
to dispense with check straps and box end straps.
The invention consists essentially in the attachment to the shuttle box, between
the swell and the end of the box, of a suitable slide piece sliding in a grooved
plate or plates secured to the shuttle box, the said sliding piece having cast or
otherwise fixed to it a projection or stud, which projects through a slot formed
in the back of the box. To the said projection, on the exterior of the box is
connected one end of a spiral or other spring, its other end being connected to a
stud or hook secured to the box.
The said slide piece is in the form of a swell or has a curved inclined face, so
that on the backward movement of the picker previous to the throw of the pick, the
picker will bear against the inclined face of the slide piece, forcing it forward
against the tension of the spring. The picker is thereby thoroughly checked in
its backward movement. In its positive movement, i.e. on the throw of the pick;
the picker is checked by the usual buffer strap, and its leather connection in
front of the box.
In this way, the checking of the picker in either direction is thoroughly efficient
and if anything, is superior to the usual check strap for the purpose, having not
the slightest tendency to cause even the most irregular spun cop to
"knock off,"
while the saving of leather is considerable. When once fixed, our improved picker
checking appliance will last for years, with little, if any, attention or repair.
In the accompanying drawings is represented our improved picker checking
appliance for looms. Fig. 1 is a sectional detached view of a box back, to which.
our improved picker checking appliance has been attached, while Fig. 2 is a
plan of the grooved plate, and slide piece heretofore described.
A is the box back shewn in section, having a slot B cut through it situated
between the swell and the box end. Opposite this opening, are fixed two grooved
plates C by screws D, with the grooves E facing each other, as shewn in dotted
lines in Fig. 2. Into the grooves of this plate C is arranged to work slide piece F
formed with a swell or inclined face G, and cast with a projection H. To the
cast projection or stud H is connected spiral spring J, which is also connected
to the stud K secured to the box back. The piece M fixed to the box back
serves as a stop to prevent the slide piece F leaving the grooves of plate C. The
picker in its return movement consequent upon receiving the shuttle from the
opposite box strikes the inclined face or swell G of the slide piece F, and forces it
forward against the tension of spiral spring J until its force due to the impact
of the shuttle is spent and checked without undue suddenness or chock or strain.
By these means, the usual check straps extending from box to box and the box end
strans are dispensed with.

page_text: Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what we
claim is:-
1. The improved picker checking appliance, substantially as described and illus-
trated in Figs. 1 and 2.
"
2. Some such plate or plates as C formed with grooves E for the reception of
slide piece F, the latter being provided with projection or stud H, to which one
end of spiral spring J is connected, the other end being connected to stud K
substantially as and for the purpose described and set forth.
RICHMOND & Co.,
Agents for the Applicants, 12, Standish Street, Burnley.