Improvements in or connected with Whip-rails of Looms for Weaving.
Year: 1890

page_text: Date of Application, 20th Mar., 1800
Complete Specification Left, 18th Dec., 1890-Accepted, 24th Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in or connected with Whip-rails of Looms for
Weaving.
We, JOSEPH LINDSAY. and ROBERT ALLAN, of Blackness Foundry, Dundee, in the
County of Forfar, North Britain, Engineers, do hereby declare the nature of this
invention to be as follows, that is to say :-
Our said invention has for its object by improved and simple apparatus applied to
the whip rail of a loom for weaving, to impart some elasticity in order to render the
beating-up or other strains on the warps less severe than in ordinary looms.
In carrying out our invention according to one modification we fix to the whip rail
by one edge a curved plate of thin steel of a suitable spring temper, this steel plate
touching the rail only where fixed to it when free. The warps in passing up from the
warp beam, to, and over this spring whip plate, as it may be termed, bend it more or
less according to the tension on them; and when the strain on them is suddenly
increased by the beat-up, the spring whip plate yields further and immediately
afterwards springs out again.
One or more springs may be applied under the spring whip plate if required; or
instead of the whip plate being elastic it may be of cast iron or otherwise rigid and
be pressed outwards by one or more springs. The rigid spring-pressed whip plate
may be hinged or attached in any other convenient way to the loom framing.
Dated this Nineteenth day of March 1890.
EDMUND HUNT,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in or connected with Whip-rails of Looms for
Weaving.
We, JOSEPH LINDSAY, and ROBERT ÁLLAN, of Blackness Foundry, Dundee, in the
County of Forfar, North Britain, Engineers, 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, that is to say .
Our said invention has for its object, by improved and simple apparatus applied to
the whip rail of a loom for weaving, to impart some elasticity in order to render the
beating-up or other strains on the warps less severe than in ordinary looms.
Our improvements can be practically carried out according to several modifications,
a selection of which are shown by way of example upon an accompanying sheet of
explanatory drawings, Figure, 1, of which is a back elevation of an improved whip
rail which is shown in cross section in Figure, 2. The remaining figures are cross
sections of other modifications.
In the modification shown in Figures 1, and 2, there is fixed to the whip rail, A,
by one edge a curved plate, B, of thin steel of a suitable spring temper. The edge of
the steel plate, B, by which it is attached has riveted, welded, or brazed to it a bar or
strip, C, of iron which is secured to the rail, A, by screws, D, placed at suitable
intervals along the rail. The steel plate, B, is not, in its normal position in contact
with any part excepting at its back edge; and the warps in passing up from the warp
beam, to and over this spring whip plate, as it may be termed, bend it more or less
according to the tension on them. Thus when the strain on the warps is suddenly
increased by the beat-up the spring whip plate, B, yields further and immediately
afterwards springs out again.
One or more springs may be applied under the spring whip plate, B, if required;

page_text: or instead of the whip plate being itself elastic, it may be of cast iron or otherwise
rigid, and be pressed outwards by one or more springs. The rigid spring-pressed whip
plate may be hinged or attached in any other convenient way to the loom framing.
In the modification shown in Figure, 3, a rigid whip plate, E, is held upon the
rail, A, by bolts, F, (at the ends beyond the edges of the warps) with its back edge in
contact with the back corner of the rail, whilst its front or inner edge is pressed up
by a spring, G, in the form of rod of rubber, confined by a cavity formed for it on
the inside of the whip plate, E.
As shown in Figure, 4, the whip plate, E, is at the back of the rail, A, being
supported and held by having its lower edge in a channel, H, formed on the back of
the rail, A.
In Figure, 5, the whip plate, E, is shown as hinged to the back of the rail, A,
and as having its free end pressed up by helical metal springs, J, placed in
sockets formed for them in the rail, A, at suitable intervals along the rail.
In Figure, 6, the whip plate, E, has its back edge resting in a channel, K, formed
at the back of the rail, A, this rail, A. being inverted. The whip rail, E, is secured
by bolts, F, which are free to move through the bottom of the rail, A; and which
have on them helical metal springs, J, arranged to press the whip plate, E, upwards.
Instead of our improved spring, whip rail, or plate being substituted for, or applied
to the ordinary rigid immovable whip rail, it may be applied in addition thereto. In
other words the warps may be made to pass over a spring whip rail or plate before or
after passing over an ordinary rigid immovable rail."
Having now particularly described and ascertained the nature of our said inven-
tion and in what manuer the same is to be performed, we declare that what we
claim is.
The providing of a loom for weaving with a spring whip rail or plato or a
spring-pressed whip plate substantially in the manner and for the purposes herein-
before described.
Dated this Seventeenth day of December 1890.
EDMUND HUNT,
Applicants' Agent.