An Improved Picking Motion for Underpick Looms.
Year: 1891

page_text: Date of Application. 4th June, 1891
Complete Specification Left, 4th Mar., 1892-Accepted, 9th Apr., 1892
PROVISIONAL SPECIFICATION.
An Improved Picking Motion for Underpick Looms.
I SQUIRE HULTON PILKINGTON of 87 Bury New Road Bolton in the County
of Lancaster Mill Manager do hereby declare the nature of this invention to be as
follows:-
This invention relates to an improved picking motion applicable to what are
known as "under-pick "looms, the object of the invention being to simplify
the said motion, by dispensing with the scroll motion and other parts usually
employed.
On the crankshaft outside the frame of the loom at each side I key a spur wheel
gearing into another spur wheel working on a stud or shaft below.
On the back of this last mentioned wheel is fixed a cam or tappet which at every
revolution of the said wheel comes against a bowl carried by the picking arm.
The picking arm is provided with a quadrant or segment to which is attached
one end of a strap the other end of which is connected to the picking stick.
For what is known as a "pick and pick" loom, that is to say one that makes one
pick alternately from each side, the spur wheel which carries the cam or tappet
has twice the number of teeth of the wheel on the crankshaft which drives it, and
there is only one cam or tappet which acts once for every two revolutions of the
crankshaft but in cases where two or more picks are required to follow each other
from the same side of the loom, as in drop-box looms, the speed of the cam wheel
and the number of cams or tappets will have to be arranged accordingly, as will be-
well understood by any ordinary mechanic conversant with the picking-motion of
looms for weaving.
Dated this 3rd day of June 1891.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Picking Motion for Underpick Looms.
I SQUIRE HULTON PILKINGTON, of 87 Bury New Road, Bolton, in the
County of Lancaster, Mill Manager, 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 an improved picking motion applicable to what are
known as under-pick" looms, the object of the invention being to simplify the
said motion by dispensing with the scroll, tumbler, staple, half-circle and fly-.
wheel, as at present in use for what is known as the "scroll" picking motion.
The nature of my 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 annexed sheet of drawings and the following explanation thereof.
Fig. 1 on the drawing represents an end view of so much of an underpick loom
as is necessary to illustrate the application of my invention thereto, a being the
end frame of the loom the crankshaft, c the lathe or slay, and d the picking
stick, e is the picking shaft.
On the crankshaft outside the frame a of the loom at each side thereof, I
key a spur wheel f, gearing into and driving another spur wheel g working on
the second motion shaft or on a stud fixed to the frame a for that purpose.
On the face of this last mentioned spur wheel is fixed a cam or tappet

page_text: which at each revolution of the said wheel comes against a bowl k carried by
a short arm which is adjustable on the picking shaft e (see detached view
Fig. 2).
In some cases instead of attaching the cam i to the wheel I fix it on the
end of the second motion shaft, as shown by the detached view Fig. 3.
The picking shaft e is provided as usual with a quadrant or segment m to which
is attached one end of a strap n, the other end of which is connected to the picking
stick d.
For what is known as a "pick-and-pick" loom, that is to say a loom that
makes one pick alternately from each side, the spur wheel 9. which carries the
cam or tappet has twice the number of teeth of the wheel on the crankshaft
which drives it and there is only one cam or tappet which acts once for every
two revolutions of the crankshaft b, but in cases where two or more picks are
required to follow each other on the same side of the loom, as in drop-box
looms, the speed of the cam wheel and the number of cams or tappets will
have to be arranged accordingly, as will be well understood by any ordinary
mechanic conversant with the picking-motion of looms for weaving.
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 :-
The improved picking motion consisting of a cam or tappet upon the second
motion shaft or upon a spur wheel mounted thereon, or upon a stud, and driven
from the crankshaft in combination with a bowl, carried by an adjustable arm on
the picking shaft, substantially as hereinbefore described and illustrated by the
drawing annexed.
Datel this 2nd day of 1000
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.