the Pile Cutting Knife in Looms.
Year: 1886

page_text: Date of Application, 1st Oct 1886
Complete Left, 29th June, 1887.
Complete Accepted, 29th July, 1887.
the Pile Cutting Knife in Looms.
We, WILLIAM EDWIN BRIGGS PRIESTLEY, of Albion Mills, Laisterdyke, in the
County of York, Manufacturer, and WILLIAM DRIGHTON of the same place, Mechanic,
do hereby declare the nature of this invention to be as follows
The object of this invention is to operate in a more direct and simple manner the
shaft, and grooved pullies secured thereon, at each end of the loom which are in
connection with and impart the reciprocating motion to the sliding pile cutting knife
In carrying out the above object we mount the grooved pullies on a shaft as
hitherto, and secure on the said shaft a toothed pinion wheel with which we gear a
toothed radial segment attached to or forming part of a lever mounted on a stud and
attached by one or more rods to another, lever of similar construction, but without
toothed segment. Each lever is recessed in which we mount a pulley, between which,
and in contact therewith, we place a pair of revolving tappets, which give a recipro-
cating motion to the said levers, thereby causing the pinion, shaft, and grooved
pullies to rotatate, and the pile cutting-knife to travel in accordance therewith.
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JOHN WAUGH,
Agent.

page_text: Improvements in the Method of and Apparatus for Operating
the Pile Cutting Knife in Looms.
We, WILLIAM EDWIN BRIGGS PRIESTLEY, of Albion Mills, Laisterdyke, in the
County of York, Manufacturer, and WILLIAM DEIGHTON, of the same place, Mechanic,
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 :-
The object of this invention is to operate in a more direct and simple manner the
shaft and grooved pullies secured thereon at each end of the loom and which are in
connection with and impart the necessary reciprocating motion to the sliding pile
cutting knife; and consists in securing on the grooved pulley shaft a toothed pinion,
and gearing therewith a toothed radial segment attached to a lever operated by
revolving tappets which give to the segment a vertical reciprocating motion, and to
the pinion and grooved pullies the necessary motion for operating the pile cutting
knife quickly at the time required.
In describing our invention more in detail, we refer to the accompanying drawings
which form part of this specification and in which Figure 1 represents an elevation
of the end frame of a loom, with our improvement secured thereto. Figure 2 is a
plan of such portions of a loom as are required to explain our invention, and Figs. 3
and 4 details of the tappets.
The pile cutting knife carriage A, slide B fitted with small grooved pullies near to
each end thereof at C, and the large grooved pullies D. D. secured on the shaft E, are
ordinary and we make no claim to them as forming part of our invention.
The shaft E is mounted in suitable bearings, and secured on the shaft is a toothed
pinion F, with which is geared a radial toothed segment G secured to the top arm or
treading lever H, one end of which is supported on a stud at J, and near the opposite
end is connected to a similar arm or lever H¹, by one or more rods K. K mounted on
stud pins which allow the arms to be operated and retain them somewhat nearly
parallel in all positions.
The before mentioned arms are operated by the tappets L and M, which are secured
on the boss of wheel N, mounted on a stud and gearing with wheel N¹ keyed on what
is commonly known as the bottom shaft P.
The tappets L and M are secured together, the former operating the top arm or
lever H, and M the bottom arm or lever H¹; the long narrow tappet L giving to the
arms and segment G a quick upward and downward movement, thereby operating
the pinion F, shaft and large grooved pullies D, D, thus transmitting to the pile
cutting knife carriage A, a quick forward and return motion across the loom, the
carriage remaining stationary until the circular portion of tappet M between the
points R, R, passes over the anti-friction pulley in bottom arm H', when the operation
is repeated the tappets being so arranged that in all positions they fill the space
between the anti-friction pullies in the arms H and H sufficiently to prevent back
lash in the knife carriage.

page_text: Having now particularly described and ascertained the nature of our invention and
in what manner the same is to be performed, we declare that what we claim is :-
The hereinbefore described method of operating pile cutting knives, the essential
novelty being the combination of the tappets L and M with the arms H and H' and
the radial segment G gearing with the pinion F, all substantially in the manner
shewn and described.
A radial segment gearing with a pinion combined with grooved pullies D. D. for
the purpose described.
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