Year: 1888

page_text: Date of Application, 9th June, 1888
Complete Specification Left, 21st Nov, 1888
Complete Specification Accepted, 21st Dec, 1888
RESTOVE
誊
We, EDWIN ROTHWELL and WILLIAM ANDREW ROTHWELL both of Linnyshaw
Mill Walkden near Bolton in the ounty of Lancaster Manufacturers, do hereby
declare the nature of this Invention to be as follows
-
The object of our Invention is to improve and simplify the picking motion of
underpick looms
To effect this we dispense with the usu il scroll tumbler staple and half circle or half
noon and we employ a striker on the fly wheel which every second revolution strikes
against a tongue fixed on the picking shaft and so turns or oscillates the litter
in the required direction for operating the picking stick which is connected to an
arm mounted loosely on the picking shaft in such a ninner that the said shaft
is free to move about a quarter turn without imparting any movement to the
arm
After the striker leaves the fixed tongue the latter with the shift turns back again
by its own weight or if necessary with the aid of a spring and to move the fixed tongue
out of the way of the striker at every alternate revolution we employ an eccentric or
tappet on the usuil weft motion or tippet shift which comes under and moves i second
fixed tongue or plate on the picking shaft and so moves the first tongue out of the
way of the striker for that revolution the shift making the required to and fro ixial
movement without imparting any motion to the loose arm on account of the mode in
which the latter is mounted on the shatt as above mentioned
In place of mounting the arm loosely on the picking shaft our object could be
accomplished by dividing the shaft and holding the adjoining ends in a coupling
the parts being so mounted that one half of the shaft could move a short distance
independently of the other, or instead of mounting the arın so that the shaft may
move for a short distance independently of it we might employ a fixed arm
and only one tongue and mount the tongue in a manner similar to that described
for the arm
DL OL
1 1000

page_text: We, EDWIN ROгHWELL and WILLIAM ANDREW ROTHWELL both of Lannyshaw
Mill Walkden near Bolton in the County of Lancaster Manufacturers do hereby
declare the nature of this Invention, and in whit manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement
The object of our Invention is to improve and simplify the picking motion of
underpick looms
To effect this we dispense with the usual scroll tumbler staple and half circle or half
moon and we employ i striker on the fly wheel which every second revolution strikes
against tongue fixed on the picking shaft and so turns or oscillates the latter in
the required direction for operating the picking tick which is connected to an arm
mounted loosely on the picking shaft in such a manner that the said shaft is free to
move about quarter turn without imparting any movement to the arm at each
alternate revolution
After the striker leaves the fixed tongue the latter with the shaft turn back agun
with the aid of a spring and to move the fixed tongue out of the way of the strike
at every alternate revolution we employ an eccentric or tappet on the usual weft
motion or tappet shaft which comes under and moves a second fixed tongue or plate
on the picking shift and so moves the first tongue out of the way of the striker
for that revolution After the cam has pissed the shatt turns back to its normal
position by its own weight or if necessary by the aid of a spring the shaft making
the required to and fro axial movement without imparting any motion to the loose
arm on account of the mode in which the latter is mounted on the shaft as above
mentioned
In place of mounting the arm loosely on the picking shaft our object could be
accomplished by dividing the shaft and holding the adjoining ends in a coupling
the parts being so mounted that one half of the shaft could move short distance
independently of the other, or instead of mounting the arm so that the shaft may
move for a short distance independently of it we might employ a fixed arm and
only one tongue and mount the tongue in a manner similar to that described for
the arm
And in order that our Invention may be fully understood and readily carried into
effect we will describe the accompanying two Sheets of Drawings reference being had
to the figures and letters marked thereon
Similar letters refer to similar parts throughout the several views
Figure 1 is an end elevation ind big 2 a side elevation of part of an underpich
loom to which our improved piching motion is applied
Fig 3 is a side elevation of a slightly different arrangement
In Figs 1 and 2-a is a portion of the loom frame, 6 the crank shaft, the fly
wheel on which is mounted a striker which at alternate revolutions strikes against

page_text: Near
tongue d¹ secured to the picking shaft d, mounted in bearings on the frame
the foot of the picking shaft d is mounted a loose picking arm e so arranged that the
said shaft d is at each alternate revolution free to move about one quarter of a turn
without imparting any movement to the picking arm e At those revolutions when
the striker e' acts upon the tongue d' the picking shaft d is in such a position that
fixed projection d thereon is at the moment of striking resting against a
projecting portion e' of the arm e whereby the said arm is forced to move with the
picking shaft d
The picking arme is connected by the picking strap f to the usual picking stick g
in the ordinary manner and a spring his employed as usual to bring the picking
stick the picking arm e and the picking shaft d back to their initial positions
On the picking shaft is fixed a second tongue d³ and on the ordinary weft motion
or tappet shaft is secured a tappet: which at every alternate revolution acts upon the
tongue d' and so moves the picking shaft d on its axis away from its initial position
sufficiently to allow the striker to miss the tongue whereby no motion is
communicated to the picking stick 9 at that revolution
The operation is as follows-When the striker c¹ comes against the fixed tongue d'
rapid movement on its axis is given to the picking shaft d, the projection d of
which being against the projection e' on the picking arm e carries the said arm with
it and so by means of the strap f causes the picking stick g to give a pick to the
shuttle
After the striker c¹ has passed the fixed tongue d' and a pick has been given as
above mentioned the springh acts upon and pulls the picking stick g back to its
initial position, the strap fat the same time moving back the picking arm e and the
picking shaft d
At the next revolution of the crank shaft b and it each secord revolution subse-
quently the tappet on the weft motion or tappet shift, comes under and moves the
tongue and with it the picking shaft d thereby moving the tongue d' out of the
way of the striker c¹ into the position shown in the Drawings This axial movement
of the picking shaft d moves the projection d' about a quarter turn back away from
the picking arme but as soon as the tappet has passed the tongue d³ the picking
shaft & turns back by gravitation or assisted by a spring if necessary thereby bringing
the projection d' close against the projection el ready for the striker c¹ at the next
revolution to come against the fixed tongue d' and actuate the picking stick 9 as
already described
In the arrangement shown in Fig 3 the picking shaft d is made in two parts
connected by a coupling d so arranged that one part of the shift is free to be moved
back a quarter turn or thereabouts without actuating the other part of the shaft
In this case the tongues d' and d³ are secured to or cast with the upper portion of the
shaft d and the picking arm e in place of being mounted loosely is cast with or fixed
upon the lower portion of the picking shaft 7 the independent movements of the
tongue d' and picking arm e being obtained by means of the coupling d* connecting
the two parts of the shaft d
As an alternative arrangement we might fix or cast the picking arm e to the picking
shaft d which in this case would be made in one piece as in Figs 1 and 2 and fit the
tongue d¹ loosely on the upper end of the said shaft so that the tongue d¹ could move
a quarter turn or thereabouts independently of the picking shaft d In this case the
tongue would be dispensed with and the tappet on the weft mouon shaft, would
be arranged to art directly upon the tongue d' and a spring might be employed to
bring the tongue d¹ back ready for the striker c
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 18-
1-Arranging the parts of the picking motion of an underpick loom in such a way
that the picking shaft or a part mounted loosely thereon can be moved back on its

page_text: axis a quarter turn or thereabouts at each alternate revolution of the crank shaft
without imparting any motion to the picking arm if loose or the part upon which
said arm if fixed is mounted
2-The several constructions and combined arrangements of parts embodying our
improvements in the picking motion of looms substantially as and for the purposes
herein described and as shown
HB BARLOW,
17, St Ann's Square, Manchester,
Agent for Applicants