Improvements in and relating to the Picking Apparatus of Looms.
Year: 1893

page_text: Date of Application, 27th Oct., 1893
Complete Specification Left, 15th Feb., 1894-Accepted, 17th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Picking Apparatus of Looms.
1, ROBERT MCNALLY of 29, Stockbridge Road, Padiham, in the County of
Lancaster, Weaver, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the picking apparatus of looms. I dispense with most
of the usual picking apparatus and attachments, and in substitution thereof I
employ a tappet and treadle at each side of the loom, from which the picking
motion is to be derived, the tappet being preferably mounted on the ordinary tappet
shaft.
Fixed about midway of the sley swords is a rail, on which is mounted at each
respective side a disc having a rocking lever cast or secured thereto. This disc is
formed with a flange to which a leather, band or chain, lapped round the aforesaid
treadle is secured by a set screw or the like, so that on motion being given to the
treadle by the said tappet it will impart a forward movement to the rocking arm or
lever.
The slot in the bottom of the shuttle box, in which the picker slides, is
completely cut away, and a bent arm or lever introduced through the said slot
underneath the sley and embedded in the picker or otherwise secured thereto at
one end, whilst its other end is mounted on a stud on the aforesaid rocking lever.
The forward movement or throw of the pick may thus be effected without the use
of picking sticks, shafts, bowls and the like, whilst the return movement of the
picker may be effected by a spring and cord attached to the flanged disc and the
loom side respectively, or if desired the two discs may each be returned in position
at the required time by one spring and cords secured to both discs.
To check the concussive force of the two rocking arms we employ a suitable
arrangement of spring buffers.
Dated this 26th day of October 1893
F. RICHMOND,
79, St. James Street, Burnley, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to the Picking Apparatus of Looms.
I, ROBERT MCNALLY of 29, Stockbridge Road, Padiham, in the County of
Lancaster, Weaver, 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 apparatus of looms. I dispense with most
of the usual picking apparatus, and in substitution thereof, I employ a tappet and
treadle at each side of the loom, from which the picking motion is to be derived,
the tappet being preferably mounted on the ordinary tappet shaft.
Fixed about midway of the sley-sword is a rail, on which is mounted at each
respective side a rocking lever, which is operated upon by the aforesaid treadle, so
that on motion being given to the treadle by the said tappet, it will impart a
forward movement to the rocking arm or lever.

page_text: The slot in the bottom of the shuttle-box, in which the picker slides is completely
cut away, and a bent arm or lever introduced through the said slot underneath the
sley, and embedded in the picker or otherwise secured thereto at one end, whilst its
other end is mounted on a stud on the aforesaid rocking lever. The forward
movement or throw of the pick may thus be effected without the use of picking
sticks, shafts, bowls, and the like, whilst the return movement of the picker may be
effected by a spring and cord attached to the rocking lever and the loom side
respectively, or if desired, the two rocking levers may each be returned in position
at the required time by one spring and cords secured to both.
To check the concussive force of the two rocking arms, we employ a suitable
arrangement of spring buffers.
In the accompanying drawings,
Fig. 1 is a front view, and Fig. 2 a side view of a loom with our improved picking
apparatus applied.
Referring to Fig. 2, A is the picking tappet or shell fixed on the tappet shaft A',
and having secured to its circumference the nose-bit B to ensure the necessary
dwell in shedding. Mounted on stud C secured to bracket C₁ bolted to the loom
frame is the treadle lever C³, one end of which is provided with anti-friction
bowl C, and is operated by the said tappet A, whilst its other extremity imparts
motion to the rocking arm or lever D in a forward direction clearly shewn in
Fig. 1.
There are two slight modifications of our picking apparatus, shewn at each
respective side of the loom in Fig. 1. We will first proceed to describe the
modification illustrated in this view on the right hand side of the loom (Fig. 1).
The rocking lever D reciprocates on stud D' fixed to side bracket D2, and the
said rocking lever is preferably shaped, its horizontal arm being provided with
link piece E secured to connecting rod F, which is then knuckle or otherwise
jointed to the extremity of the treadle lever C³. To the vertical arm of the said
rocking lever is jointed one end of the bent arm or lever G. The other extremity
of the said bent arm is formed into a hook J, and is introduced through an
elongated side slot in the picker K and then turned round, so as to prevent any
possibility of its becoming loose.
It will be apparent that on motion being given to the treadle lever by the tappet,
it will in turn through the medium of the rocking arm and connections already
described operate the picker K, and thereby pick or throw the shuttle to the
opposite box.
At the opposite or left hand side of the loom is illustrated a modification of my
invention. Here, the rocking lever D reciprocates on the stud D' fixed to the side
bracket D' bolted to the loom frame. The horizontal arm of the lever D is formed
into a shaft, which carries a loose boss or bowl L, upon which the far extremity of
treadle lever C³, when acted upon by the tappet Á in the manner already described
bears, and thereby depresses such horizontal arm, bringing forward the vertical
arm of the said lever, and thus operating the picker, to which the bent arm or
lever G is secured exactly in the same way as that described in relation to the
picking motion at the opposite side of the loom.
Both these arrangements of picking apparatus may be employed together in one
loom, or they may be used separately.
Attached to the sley sword and the rocking levers D respectively are springs R,
which after the forward stroke or throw of the pick has been effected return the
said levers to their original position in readiness for the next pick.
For the purpose of checking the concussive force of the two rocking levers in
their forward movement, we employ an arrangement of spring buffers. Enclosed
within outer casing M is a spring, which forces forward the bolt-head O, against
which the bumper P on the rocking lever D strikes on the throw of the pick. The
bumper P consists of a socket cast or detachably secured to the rocking lever D,
into which socket is inserted a filling of indiarubber, leather, compressed paper,
wood or the like, so as to deaden the concussive force of the pick.

page_text: The improved arrangements or picking motions above described obviate the use
of most of the usual picking apparatus, such as picking sticks, shafts, bowls and the
like. The usual leather attachments, such as picking-bands, check and buffer
straps, which are acknowledged to be very costly accompaniments to a loom, since
they constantly require replacing are likewise dispensed with. While there is such
a radical change in the constituent parts of my improved picking motion, the
picking is quite as effective as the ordinary arrangements, and the working parts
are of such a nature as to withstand the usage to which they will be subjected for
a very considerable time.
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. The improved arrangement of loom picking apparatus, substantially as
described and illustrated in Figs. 1 and 2.
2. The tappet A, treadle lever C³, rocking lever D, and bent arm G as attached
to the picker, substantially as described and illustrated for the purpose set forth.
3. The spring buffers, and means for checking the concussive force of the rocking
arms D, substantially as shewn and described.
4. The general arrangement and combination of the parts, substantially as
described and illustrated.
Dated this 10th day of February 1894.
F. RICHMOND,
79, St. James Street, Burnley, Agent for the Applicant.