Improvements in Machinery or Apparatus for Cutting and Separating Double Woven Pile Fabrics.
Year: 1894

page_text: Date of Application, 17th Dec., 1894
Complete Specification Left, 17th Sept., 1895-Accepted, 23rd Nov., 1895:
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Cutting and
Separating Double Woven Pile Fabrics.
I, DUNCAN MCGLASHAN, of Underwood Lane, Paisley, in the County of
Renfrew, North Britain Engineer, do hereby declare the nature of this invention
to be as follows :-
:
My arrangement of a machine for this purpose consists of a slide fixed to front
of loom, having a bracket fitted thereon, which is made to slide to & fro,
carrying a revolving knife & train of wheels, which receive their motion from a
rack fixed on face of slide. Also a friction arrangement of the wheels to
overcome the inertia & momentum of the revolving knife, caused by the sudden
starting & stopping of the knife bracket. The friction arrangement is carried
out as follows. The rack pinion has a gear wheel fitted on hub of same, with
coned surfaces & held together with a spiral spring, so that the gear wheel may
revolve on the hub of rack pinion when required.
Dated this 15th day of December 1894.
Improvements in Machinery or Apparatus for Cutting and
Separating Double Woven Pile Fabrics.
I DUNCAN MCGLASHAN of the Clyde Engine and Machine Works, Underwood
Lane, Paisley in the County of Renfrew, Scotland, Engineer 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 :—
My invention relates to improvements in machinery or apparatus for cutting
and separating double woven pile fabrics such as velvet, velveteen or piled
carpets. According to my invention a slide-piece or guide is fixed to the front of
the loom and has fitted to it, so as to slide thereon, a bracket carrying a circular
revolving knife and a train of gear wheels receiving motion from a rack fixed or
formed on the face of the aforesaid slide-piece, the backward and forward motion
of the bracket causing the knife to be revolved at considerable speed. The
bracket is operated by means of a rod and eccentric driven by the loom.
A check bar or guide is fixed in front of the knife and providing with an opening
through which the double cloth or fabric is fed to the knife the latter dividing
the fabric into two equal portions or single pieces which pass respectively around
a top and bottom feeding roller.
I also provide a friction arrangement to overcome the inertia and momentum of
the revolving knife caused by the sudden starting and stopping of the knife
bracket in its forward and backward movement.
This arrangement consists in mounting loosely on the hub of the rack pinion &
gear wheel formed with a recess in its upper face in which fits a coned plate upon
which bears a strong spiral spring for locking the wheel to the said hub or
permitting of its independent movement thereon.

page_text: In the accompanying sheet of drawings
Figure 1. is a sectional elevation of the improved machine or cutting apparatus
according to my invention and Figure 2. is a plan thereof partly in section on the
line of Fig. 1.
Figure 3 is a section of the friction arrangement.
a is the 'slide-piece or guide fixed in any suitable manner to the front of the
loom, is the bracket fitted to and sliding upon the slide-picce a. c is the circular
knife revolving upon the pivot c' fixed to the front portion of the bracket
and dd', d2, d3, d4 are the gear wheels for revolving the knife. The pinion d4
gears with a rack e fixed to or formed on the face of the slide-piece a. The
latter is tightened-up by the loose piece and adjusting screws gg. The bracket
is driven backwards and forwards by the rod operated by an eccentric or crank,
thus causing the gear wheels and knife to revolve.
The check bar or guide i is fixed in front of the knife and providing with an
opening through which passes the double cloth or fabric k so that as the latter is
fed onwards the knife divides it into two equal portions or single pieces k¹ k 2
which pass respectively around the top and bottom feed rollers. The friction
arrangement shown separately in Fig. 3 consists in mounting loosely upon the
hub or spindle m of the rack pinion 4, the gear wheel d3 which is hollowed out
to receive the coned plate n. Upon this plate bears the spiral spring o which can
be regulated in its tension by the nut p screwed upon the threaded hub m. The
spring o causes the plate n to lock the wheel d 3 to the hub m and thus to operate
the gearing through the action of the moving bracket and fixed rack, but it
permits of the disconnection of the wheel d3 from the hub when a sudden strain
is put upon the gearing as in the reverse movement of the bracket during its
forward and backward strokes.
Having now particularly described and ascertained the nature of my said inven-
tion I declare that what I claim is -
1. In a machine or apparatus for cutting and separating double woven pile
fabrics the combination with a fixed rack of a bracket sliding thereon and
carrying a circular knife and gear wheels for operating the latter by means of the
to and fro motion of the bracket substantially as herein described and set forth.
2. In a machine or apparatus as above claimed the use of a sliding-piece or
guide a fixed to the front of a loom and provided with a rack e into which gears
a pinion d 4 for operating gear wheels d 3, d 2, d' and d and the knife c, all carried
by the bracket 6 having a to and fro motion given to it by the rod / upon the
slide piece or guide a substantially as described and for the purposes specified.
3. The combination with the sliding bracket & carrying the knife c of the check
bar or guide i and the feed rollers for guiding and feeding the fabric k to the
knife so as to be cut or separated by the latter into two single pieces k' k 2
substantially as described and set forth.
4. The friction arrangement consisting of the rack pinion d 4 hub m, gear
wheel d 3, coned plate n, spring o and adjusting nut p substantially as described
and for the purpose specified.
5. The improved machine or apparatus for cutting and separating double woven
pile fabrics substantially as described and shown in the accompanying sheet of
drawings.
Dated this 16th day of 100
J. B. FLEURET,
5 Hatton Garden, London, Agent for the Applicant.
J. B. FLEURET,
5 Hatton Garden, London, Agent for the Applicant.