Improvements in the Picking Motion of Looms.
Year: 1889

page_text: Date of Application, 24th Aug., 1889
Complete Specification Left, 16th May, 1890-Accepted, 21st June, 1890
PROVISIONAL SPECIFICATION.
Improvements in the Picking Motion of Looms.
I, ANTHONY CLEGG of 2 Denton Street Walmersley Road Bury in the County of
Lancaster, Weaving Manager, do hereby declare the nature of this invention to be as
follows:-
This Invention relates to the picking motion of under-pick looms and it has
for its objects to simplify the construction of the motion and to render it more certain
in its action.
According to these Improvements, a buffer bracket is cast upon the picking shaft
just below the picking tongue which is preferably mounted so as to be capable of
sliding upon the picking shaft. The motion is imparted to the picking shaft by
means of a hammer on the fly wheel which strikes the tongue at each alternate
revolution. At the intermediate revolutions of the fly wheel, the picking tongue is
slided along the picking shaft so as to be out of the way of the hammer.
The tongue bears upon the buffer bracket and is supported thereby in the direction
of the blow and thus transmits the motion from the hammer through the bracket to
the picking shaft. I prefer to secure a layer or layers of leather, indiarubber, or
other soft material between the tongue and the bracket in order to deaden the
shock.
The tongue may be slided out of the way of the hammer as required at each
alternate revolution by means of a cam or excentric on the tappet or weft motion shaft.
I prefer however, to slide it out of the way by means of the well known scroll motion,
the L lever of which carries an arm which engages with the tongue and lifts it out of
the way at each alternate revolution of the hammer.
When the tongue is operated by the scroll motion it may be turned through a
quarter revolution on the picking shaft instead of being lifted or slided along the
shaft out of the way of the hammer.
In order to prevent the picking tongue from slipping upwards and making a false
pick, I may form a flange or projection upon the bammer or upon the tongue as may
be most convenient.
When the picking shaft is operated by means of a scroll motion, the lever which
transmits the motion from the hammer to the picking tongue may be conveniently
placed outside the loom side where it will be more accessible for repairs when
needed.
If desired, the tongue may be cast upon the picking shaft instead of being loose
thereon, but I do not prefer this plan as it involves the lifting or sliding of the whole
weight of the picking shaft instead of that of the tongue only.
Dated this 22nd day of Angust. A D 1889
WILLIAM E. HEYS,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Picking Motion of Looms.
I, ANTHONY CLEGG of 2 Denton Street Walmersley Road Bury in the County of
Lancaster, Weaving Manufacturer, 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 the picking motion of underpick looms and it has for its
object to simplify the construction of the motion and to render it more certain in its

page_text: According to these Improvements I construct and arrange the picking tongue in
such a manner that it is capable of being moved in a longitudinal direction with
reference to the picker shaft but is incapable of rotation upon the shaft. The picking
motion is derived from a hammer upon the fly wheel which strikes the picking tongue
at each alternate revolution. At the intermediate revolutions the picking tongue or
that part of it which is struck by the hammer is moved longitudinally on the picker
shaft so as to escape being struck.
The tongue is supported by a bracket cast upon the shaft or by an equivalent
thickened or strengthened part of the shaft so that the blow of the hammer is trans-
mitted through the tongue to the shaft by the bracket or thickened part. To deaden
the shock of the blow there may be interposed between the shaft and the tongue a
cushion of indiarubber, leather, or other suitable material.
I will more particularly describe my said Invention with reference to the accom-
panying drawings in which-.
Figure 1 is an elevation of the apparatus as operated by means of a scroll
motion;
Figure 2 shews the end of the picker shaft with the finger in position to be struck
by the hammer ;
Figure 3 a plan of Figure 2;
Figure 4 a view similar to Figure 2 but shewing the finger shifted to avoid the blow
of the hammer ;
Figure 5 a plan of Figure 4;
Figure 6 a part of the fly wheel with a flanged hammer thereon ;
Figure 7 a plan of the finger with a flange thereon;
Figure 8 a section of Figure 6;
Figure 9 an elevation of Figure 7 ;
Figure 10 a plan of the apparatus on each side of the loom ;
Figure 11 a partial elevation ;
Figure 12 a plan and end view of the picker shaft;
Figure 13 a plan and side view respectively of one form of the finger;
Figure 14 a modification of Figure 13;
Figure 15 a plan and end view respectively of the end of the picker shaft with a
modified construction of the finger;
Figure 16 a side view of Figure 15;
Figure 17 a plan of the modified form of the apparatus at each side of the
loom ;
Figure 18 and Figure 19 side views respectively of the two sets of the apparatus
shewn in Figure 17.
In each of the Figures in which the parts are represented, A is the fly wheel;
B the picker shaft; O the tongue on the picker shaft; D the arm or lever by means
of which the tongue is shifted into or out of the position in which it is capable of
being struck by the hammer; E the hammer on the fly wheel; F a rocking shaft
by which the arms or levers D D on the opposite sides of the loon: may be connected;
Ga flange on the hammer; G₁ a flange on the tongue; H a rod or lever by which
the motion is conveyed from the scroll or from a suitable cam or crank to the
rocking shaft F or to the lever D; I is the scroll motion; and J is a bracket
cast upon the picker shaft, or the thickened part of the picker shaft as the case
may he.
The tongue may be constructed to slide bodily on the picker shaft as shewn in
Figures 1, 2, 3, 4, 5, 7, 9, 10, 11, 12, 13, and 14, in which case the tongue is prefer-
ably cast upon a boss through which an eye is formed to fit upon the picker shaft.
The part of the picker shaft upon which the tongue slides, and consequently also the
eye of the tongue should in this case be non-circular or otherwise suitably shaped to
prevent angular motion of the tongue independently of the picker shaft when struck,
and I prefer the forms represented in Figures 13 and 14; or, the shaft and eye may
respectively be circular if means are provided to prevent the angular motion of the
tongue in the direction of the blow without similar motion of the picker shaft. In

page_text: Figures 2, 3, 4, 5, 7 and 9 for example, this simultaneous angular motion of the
picker shaft and of the tongue is secured by its contact with the bracket J, which is
cast upon or fixed to the picker shaft.
Instead of forming the tongue upon a boss which is slided upon the picker shaft
the longitudinal motion of that part of the tongue which is struck by the hammer
may be secured by the means illustrated by Figures 15, 16, 17, 18 and 19. In this
modification the tongue passes through and is pivoted in a slot in the picker shaft
which is thickened to enable it to withstand the shock.
At the back of the tongue or of the boss on which it is secured or cast, there is
formed a prolongation or projection by means of which the tongue may be moved,
when required.
The tongue may be moved out of the way of the hammer as required at each
alternate revolution by means of a cam or excentric on the tappet or weft motion
shaft. I prefer however to move it out of the path of the hammer by means of the
well known scroll motion as represented in Figures 1 and 11. In either case the
lever His connected to the boat of the scroll motion or to the cam or excentric.
This lever may be connected directly with the lifting arm D in which case the two
parts may constitute a bell crank lever which may be mounted on a suitable stud, or
the lever H may be keyed or secured upon the rocking shaft in which case the arm D
will also be keyed upon the rocking shaft. In the former case two scrolls or cams
will be required, that is to say one at each side of the loom, but in the latter case one
scroll cam or excentric and one lever H only will be required as shewn in Figures 10
and 17. It will be understood that when the lifting arms D are both fixed upon the
rocking shaft it will be necessary to so arrange them that whilst one is lifting its
tongue, the other has lowered the tongue on the opposite side of the loom as indicated
by Figures 18 and 19. It will also be desirable with the pivoted tongues that one of
the levers should operate on the outside and the other on the inside of their respective
picker shafts as in Figures 17 18 and 19. It may however be arranged that one of
the tongues shall be lifted up to receive the blow of the hammer and the other be
lifted up to avoid the blow, in which case both the arms D may operate inside their
respective picker shafts as illustrated by Figure 10.
In order to prevent the tongue from slipping upwards and thus making a false pick,
I may form a flange G G on the hammer as in Figures 6 and 8, or upon the tongue
as in Figures 7 and 9.
When the picker shaft is operated by the scroll motion, the lever H which transinits
the notion from the hammer to the tongue may conveniently be placed outside the
loom side as illustrated by the drawings, in which position it will be more accessible
for repairs when needed.'
If desired, the tongue may be cast upon the picker shaft instead of being con-
structed to move longitudinally with respect to it, but this plan is disadvantageous
because it involves the lifting or sliding of the whole weight of the picker shaft in
order to obtain the necessary motion of the tongue, instead of the lifting of the
tongue only.
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) In the picking motion of underpick looms, the construction and arrangement
of the tongue of the picker shaft in such a manner that it is moved alternately into
and out of the path of the hammer in successive revolutions of the fly wheel and so
also that the angular motion of the tongue resulting from the blow of the hammer is
participated by the picker shaft; substantially as hereinbefore described and as
illustrated by the accompanying drawings.
(2) In the picking motion of underpick looms, the combination and arrangement
with a scroll motion or with an equivalent cam crank or excentric, of a bell crank
lever one end of which is connected to the boat of the scroll motion or with the
cam crank or excentric and the other end in contact with the picker shaft tongue,

page_text: and a tongue on or in the picker shaft capable of being moved by the bell crank
lever into and out of the path of the hammer; substantially as hereinbefore described
and as illustrated by the accompanying drawings.
(3) In the picking motion of underpick looms, the combination and arrangment
with a scroll motion or with an equivalent cam crank or excentric, of a rocking
shaft, a lever mounted upon the rocking shaft, and connected with the boat of the
scroll motion or with the cam crank or excentric, two arms D mounted on the rock-
ing shaft in contact with the two tongues of the picker shafts, and a tongue in each
picker shaft capable of being moved by the arms D into and out of the path of the
hammers on the fly wheels; substantially as bereinbefore described and as illustrated
by the accompanying drawings.
Dated this 19th
A D 1900
WILLIAM E. HEYS,
Agent for the Applicant.