Improvements in Mechanism for Supporting and Actuating or Governing the Position of the Carrier of the Pile Cutting Knife in Wilton Carpet Looms.
Year: 1898

page_text: Date of Application, 5th July, 1898--Accepted, 6th Aug., 1898
COMPLETE SPECIFICATION.
[Comunicated from abroad by The SOCIETE ANONYME DU PHOENIX, of No. 31, Rue
du Phoenix, Ghent, in the Kingdom of Belgium, Engine Makers.]
Improvements in Mechanism for Supporting and Actuating or
Governing the Position of the Carrier of the Pile Cutting Knife
in Wilton Carpet Looms.
I, WILLIAM THOMAS WHITEMAN, of No. 7, Staple Inn, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention, and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:—
This invention relates to the pile cutter mechanism in Wilton carpet looms and
has for its object new arrangements for the mounting of the batten-guide on which
the knife carrier slides and for governing the ascending and descending motion of
the knife.
In the accompanying drawings,
Figure 1 is an elevation of the whole of the mechanism.
Figure 2 is a plan view.
Figure 3 is a view taken through the middle of the batten the knife carrier being
removed and
Figure 4 is a side elevation of the knife carrier.
At each of its extremities the batten-guide Fon which the knife carrier M
slides is fixed to a support K mounted on a pin or pivot P carried by a sleeve Q
which is capable of sliding on a spindle y fixed in a support S'and which is in con-
tact with the pile wire » through the medium of an angularly bent bar B.
A spring R on the spindle g forces the sleeve Q and consequently the angularly
bent bar B and the batten F toward the pile wire while a screw stop W limits
the motion of the sleeve in that direction. The said screw W which is parallel
to the spindle g passes freely through the support S against which its head bears
and its extremity is screwed into a lug U on the sleeve Q and is secured in place
in the said lug by screw nuts.
Owing to this arrangement the batten F can turn or pivot on each of its
extremities and its position relatively to the pile wire is regulated by the
angularly bent bar B which is held in contact with the said pile wire.
The rising and descending motion of the knife C is provided for by a cam L
mounted on a pivot T fixed to the rear of the support in which slides the knife
carrier M which through the medium of a trunnion T is supported by the top
of this cam L which latter is so cut on one side that its oscillation on its pivot
causes the knife to be alternately raised and lowered the knife being in its highest
position when the highest part of the top of the cam is under the trunnion Ti and
the said knife being in its lowest position when the lowest portion of the top part
of the cam is under the said trunnion.
At each side of the lower part of the cam L are formed projections h and h¹
which by the reciprocating movement of the knife carrier upon the batten F are

page_text: brought alternately into contact with the set screws V and V₁ fixed to the support
of the batten and cause the cam L to oscillate on its pivot. T thus determining the
raising and lowering of the trunnion T and of the knife carrier M. Springs r
and fixed to the support of the knife carrier and bearing respectively on the
trunnion T and the lower part of the cam L maintain the latter in the position
to which it has been brought by its last contact with one or the other of the
screws V and V¹. The trunnion T is designed to receive the connecting rod which
communicates reciprocating motion to the knife carrier.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that I
claim: :―
First: A method of mounting the batten-guide on which slides the carrier of
the pile cutting knife in Wilton carpet looms characterized by the mounting of
each of the ends of the said batten on a pin or pivot the support of which placed
in contact with the pile wire is capable of sliding on a fixed spindle substantially
as herein before described and illustrated in the accompanying drawing.
Secondly: An arrangement for alternately raising and lowering the knife
carrier consisting in causing the said carrier to rest by means of a trunnion on
the top of a cam mounted on a pivot which cam receives an oscillating movement
by contact with a fixed piece at each end of the traverse of the knife carrier the
top of the said oscillating cam being so shaped that its oscillation in one direction
will cause the knife carrier to rise and oscillation of the said cam in the other
direction will cause the knife carrier to descend substantially as herein before
described and illustrated in the accompanying drawing.
Dated this Fifth day of July 1898.