An Improved "Letting Off" Motion in Connection with Looms for Weaving.
Year: 1886

page_text: Date of Application, 6th May., 1886.
Complete Left, 5th Feb., 1887.
Complete Accepted, 8th Mar., 1887.
TROYDOIONAL SIMULRICATION.
An Improved "Letting Off" Motion in Connection with Looms for
Weaving.
We, LEONARD CLEMENT of Forest Villa, Nelson in Marsden Lancashire, and NOAH
CORK of Nelson in Marsden aforesaid Loom Tuner do hereby declare the nature of
this invention, to be as follows :—
Our invention consists in the combination and arrangement of apparatus for
automatically regulating the tension of the warp as it is being unwound from the beam
whilst the loom is weaving.
In carrying out our invention we attach at the back of the loom, and at each end
thereof certain semi-circular brackets into which we place the warp beam, the
"ruffles thereon resting upon shoes or lugs at certain distances apart within the
semi-circular brackets, so that the "ruffle" is not in contact with the whole surface of
the hollow brackets, consequently friction thereon is reduced.
At the rear end of the bracket we fasten one end of a chain, rope, or strap, the other
end of the said chain, rope, or strap being fastened to one of the ordinary weighted
levers. This chain carries a number of shoes or brackets, and they bear against the
opposite half of the "ruffle" resting in the hollow bracket and as the weighted
levers are drawing the chain downwards the beam is almost rigidly held down in the
hollow bracket, but not so rigid as to prevent the warp being pulled off by the action
of weaving.
The shoes in the hollow bracket have a projection cast on them which fits into a
recess in the said bracket allowing of a slight lateral movement thereof so that the
beam can give and take in response to the action of the healds, the lateral movement
of the shoes also allows "ruffles" of unequal diameter to be used without changing
position of the brackets or shoes.
The end studs or spindles of the beam are not resting in the loom end as is
generally the case, as according to our method, the beam is resting in the hollow
brackets, but the point of contact with the "ruffles" is only upon the shoes in the
bracket and under the chain.
By the employment of apparatus such as is herein described an efficient, durable,
and cheap letting off" motion is found.
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הבדידה
CIBANT

page_text: We, LEONARD CLEMENT, of Forest Villa, Nelson-in-Marsden, Lancashire, and
NOAH CORK, of Nelson-in-Marsden, aforesaid, Loom Tuner, 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 invention consists in the combination and arrangement of apparatus for auto-
matically regulating the tension of the warp as it is being unwound from the beam
whilst the loom is weaving.
In carrying out our invention we place at the back of the loom, and at each end
thereof, certain semi-circular brackets into which we place the warp beam, the
"ruffles thereon resting upon shoes or lugs at certain distances apart within the
semi-circular brackets, so that the "ruffle" is not in contact with the whole surface of
the hollow brackets, consequently friction thereon is reduced. At the rear end of the
bracket we fasten one end of a chain, rope, or strap, the other end of the said chain,
rope, or strap, being fastened to one of the ordinary weighted levers.
Such being the nature and object of our invention we will now proceed to describe
the same more fully, and for that purpose make reference to the accompanying sheet
of drawings illustrative thereof, wherein Fig. 1. is elevation of so much of a warp
beam and parts connected thereto as is necessary to illustrate our improvements.
Fig. 2 is end view of Fig. 1, and Fig. 3 is section thereof. In these drawings A
represents the warp beam, B the flange thereon, and the ordinary "ruffle" arranged
in the usual manner, D is a semi-circular casting connected by bolt and nut a to the
bracket E, attached to the loom frame F. The casting D is made with small hollows
or recesses for receiving small projections on the vibrating shoes H, upon which
vibrating shoes the ruffle rests with the full weight of the beam thereon. To the
chain I we fix by screws or other means certain shoes or lugs J, the surfaces of which
rest upon the surface or periphery of the "ruffle," one end of the said chain I being
attached to the rear of the casting D, whilst the opposite end of said chain I is
fastened in any suitable manner to the ordinary weighted lever K, hinged to the loom
frame at L. It must be understood that the end studs or shafts of the beam are not
resting in the loom end as is generally the case, but the said beam is resting in the
hollow brackets D, the arrangement being such, that as the warp is opened and closed
by the action of the healds, the warp beam is free to oscillate in response to the
unequal vibration and pull of the warp caused by the action of the healds. It will
also be seen that the frictional contact of the ruffles" is only with the shoes H

page_text: and J, and as the weighted lever K is pulling the chain downwards the beam is
almost rigidly held in the hollow casting D, but not so rigidly as to prevent the warp
being pulled off by the action of weaving, according to requirement.
The apparatus herein shewn and described is attached at each end of the loom.
By the employment of apparatus such as is herein described, an efficient, durable,
and cheap letting off motion is formed.
Having now particularly described and ascertained the nature of our said invention,
and in what manner the same is to be performed, we declare that what we claim is :-
Firstly The combination of semi-circular casting D, vibrating shoes H, with
ruffle C, for allowing oscillation of the warp beam in manner, and for purposes set
forth.
Secondly The combination of weighted chain I, shoes J, with "ruffle
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employed for the purposes and in the manner, substantially as set forth.
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