Improved Pick and Pick Motion for Looms for Weaving.
Year: 1894

page_text: Date of Application, 23rd July, 1894
Complete Specification Left. 23rd Apr., 1895-Accepted, 24th May, 1895
PROVISIONAL SPECIFICATION.
Improved Pick and Pick Motion for Looms for Weaving.
°
We JAMES SHELDON of 91 Peel Street, Sutton, near Macclesfield and
JAMES MURRAY of 77 Chester Road, Macclesfield, Loom Tacklers, and
WILLIAM SMITH & BROS. LIMITED, of Heywood, Machine Makers, do hereby
declare the nature of this invention to be as follows :-
Our said invention relates to an improved pick and pick motion for looms for
weaving.
According to our said invention the pick and pick motion is actuated from the
tappet shaft on which we mount a cam. A distance piece operated by the Jacquard
machine (or other analogous appliance) is hinged to a lever connected to a cross
rail which operates the saddles of the picking lever. When the said distance
piece is in gear the saddle of for example the right hand side of the loom is in
operation. When the distance piece is withdrawn a spring or weight brings the
left hand saddle into action. The actual work of changing the pick is by this
means performed by the tappet shaft and as the jacquard simply controls the pick
it is not subject to strain.
Dated 21st day of July 1894.
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improved Pick and Pick Motion for Looms for Weaving.
We JAMES SHELDON of 91 Peel Street, Sutton, near Macclesfield, and
JAMES MURRAY of 77 Chester Road, Macclesfield, Loom Tacklers, and
WILLIAM SMITH & BROS., LIMITED, of Heywood, Machine Makers, 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:-
Our said invention relates to an improved pick and pick motion for looms for
weaving.
Description of drawings hereinafter referred to
Figure 1 is an elevation as seen from the back of the loom.
Figure 2 is a sectional elevation through a-x of Figure 1.
Fig. 3 is a plan.
Fig. 4 is an enlarged section of the slide box.
1
In the figures only so much of the loom is shown as is necessary for the explanation
of our invention.
In all the figures A is the framing of the loom B is the tappet shaft, C is a lever
(of which there is one at each side of the loom) which brings the picking saddle
into effective operation, hereinafter referred to as the saddle bar. The
parts A B and C are arranged and constructed in the usual manner and their
shapes and respective positions will vary according to the type of loom to which
our invention is to be applied.

page_text: According to our said invention we mount on the tappet shaft B a cam a. In
a slide box or carrier b is a slide block c which is continually kept in contact with
the surface of the cam by springs c'. As the cam a rotates the slide block o thus
slides to and fro.
Hinged to the slide box b is a levere the lower end of which takes into one
arm of a bell crank leverf pivoted at f¹. The other arm of the bell crank lever fis
connected by the piece g with a link h extending from one side of the loom to
the other and connected at both ends to the saddle bars C.
At the upper end of the lever e is hinged a block or distance piece k con-
nected by a cord to the Jacquard machine shaft machine or other analogous
appliance which will raise or lower the piece k as required.
When the distance piece k is lowered into the position indicated by dotted
lines in Fig. 4 the motion of the slide block c is communicated to the lever e and
the latter acting through the bell crank lever f-shifts the link hand thus reverses
the position of the saddle rods C and changes the pick.
A spring keeps the link / normally pulled towards one side of the loom.
The apparatus may be applied to either right or left hand looms.
By the use of such a combination of mechanism the actual work of changing
the pick is performed by the cam on the tappet shaft and the Jacquard machine
is relieved of strain inasmuch as its work (so far as the picking motion is con-
cerned) is limited to the insertion and withdrawal of the distance piece k which
transmits the motion of the slide block c to the lever e.
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 is :-
1. The means for controlling the picks in looms substantially as set forth and
shown.
2. In a weaving loom the combination of the cam a the hinged distance
piece the levers e and f and the link for operating and controlling the position
of the saddle bars C substantially as and for the purpose set forth and shown.
Dated 22nd day of April 1895.
E. T. WHITELOW, A.M. Inst. C.E.
70, Deansgate, Manchester, Agent for the Applicants.