Improvements in Means for Shearing or Finishing the Edges of Pile Fabrics, Mats, and the like.
Year: 1899

page_text: Date of Application, 30th Nov., 1899-Accepted, 20th Jan.,
1900
COMPLETE SPECIFICATION..
Improvements in Means for Shearing or Finishing the Edges of Pile
Fabrics, Mats, and the like.
We, HARRY GOODACRE, a Director, and WILLIAM GOODACRE & SONS LIMITED,
both of Ceylon Mills, Victoria Docks, London, 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 relates to certain improvements in means for trimming the edges of
fabrics and like articles such as pile rugs and mats and particularly of such a fabric
as a coir yarn mat the upper surface or face of which has previously been cut by
some well known form of shearing machine, and it comprises an arrangement of
cutting cylinder and blade and a table having both a vertical and lateral adjust-
ment as well as a tilting one whereby the amount of cut and its angle can be
varied and whereby when one part of the cutting cylinder and blade are dull
the table can be adjusted to bring it opposite another part all as hereinafter
described.
In the accompanying drawing
Fig. 1 is an end elevation of a machine constructed-according to our invention.
Fig. 2 is a partial plan looking down in the direction of the arrow Fig. 1
and
Fig. 3 is a front elevation.
The cutting cylinder 1 has a suitable number of spiral blades working against
a fixed blade 2 in a manner well known in machines of the shearing type and
in the present case these parts are removeably mounted on and carried by a
shaft 3 mounted at an angle in suitable bearings 4, 4, on the frame the shaft
having a pulley 6 driven by a belt from a pulley 7 on a counter shaft 8 which
is driven from a pulley 9 on same shaft by a belt from a pulley 10 on the main
shaft 11.
The blade 2 is carried by a block 12 having a dovetailed recess and capable of
sliding on a corresponding part 13 carried by the frame 5 the adjustment being
effected by means of a screw 14 passing through a fixed nut 15 of the part 13 so
that the blade may be moved to and fro from the centre line of the cylinder.
It is also provided with an adjustment for moving it nearer to or farther away
from the cylinder consisting of a slide 16 moveable in the block 12 at right angles
to the movement of the latter the adjustment being effected as in the other case
by a screw 17 passing through a fixed nut 18 carried by a bracket attached to
block. 12. A further adjustment may be provided consisting of a segmental plate
70 an arm 71 of which carries the blade such plate 70 being secured to slide
16 by bolts passing through segmental slots 72 so that the blade may be moved
to a small extent around the cylinder.
The table 20 is pivoted at 21 to frames 26, 26, carried by frames 30, 30, herein-
after described and carries two segmental racks 22 pivoted to it and arranged to
engage with the teeth or pawls of hand levers 23, 23, secured to a shaft 24 which
is rotatable in bearing brackets 25 carried by the frame 26 which latter has

page_text: dovetailed edges (Fig. 3) adapted to slide in corresponding recesses in the
frames 30, 30. The bracket 25 has a part 60 which acts as a guide for the
back of the rack 22 and keeps it in position and also serves for the tooth of
lever 23 to press it against so as to hold it.
By lifting the table from the edge it may be tilted as shewn in dotted lines
Fig. 1 to enable a mat or the like laid thereon to have the edge presented to
the cutting device and frame at the desired angle the pawls holding it by means
of the racks in such position. The rear end of the table has a guiding ledge 27
for the mat in which is an opening 28 for the cutter to project through as
shewn.
As shewn the table is placed at the lowest part of the cutting device but when
the edges at that point are dull the table is raised to bring it to a point higher
up on the knife so as to obtain a new surface. This vertical adjustment of the
table would be interfered with by the overhang of the cutting device and it
is therefore necessary to provide a lateral adjustment so that the table may be
moved forward sufficiently to enable the vertical movement to be effected.
For this latter movement the frames 30, 30, are provided. These are situate
at each end of the machine beneath the table 20 and carry each of them two
guiding rods 31, 31, which pass through guide blocks 32 carried by the frame 5.
To the underside of the frames 30 are pivotally hung links 33, 34 the former being
pivoted to one end of cranks 36 fixed on a shaft 35 carried in suitable bearings
in the frame 5 while the other end of one crank is connected by a link 37 to
one end of one crank 38 secured to a shaft 39 carried in suitable bearings on
frame 5 the other end of the cranks 38 being connected to link 34. Shaft 35
carries a worm wheel 40 with which engages a worm 41 on a spindle 42 at right
angles to shaft 35 supported by brackets attached to frame 5 and which spindle
carries a hand wheel 43 conveniently situated in front of the table. By turning
the hand wheel the shaft 35 is operated to move cranks 36 by which links 33
are raised and through link 37 and cranks 38, links 34 also, so that the table
can lift evenly at each end. The table also carries racks 45, 45, beneath the
frame 26 with which engage gear wheels 47, 47, fixed on a shaft 48 carried in
suitable bearings in frame 5 and having at one end a worm wheel 49 with which
engages a worm 50 on a spindle 51 carried in hangers 51 of the frame 30 the
spindle having at the front of the table a hand wheel 52 by the rotation of which
through the worm and wheel the shaft and gear wheels 47 are rotated so that
the table may be moved forward before it is raised by the other appliances.
In trimming coir yarn mats the cutting device is so set as far as its pro-
jection over the table is concerned that it will not act on the mat directly from
the table surface or level as the mat is provided usually with a plaited edging
for a height of about a half inch or so and this would otherwise be cut by the
knife.
It will be understood that in place of the cutting device consisting of a cylinder
and blade set at an angle and carried by an approximately vertical shaft the
cylinder may be substituted by a cone set on a vertical shaft and tapering upwardly
or downwardly, the same lateral and vertical movements of the table being
required for bringing the latter to a fresh part of the cutter and the same tilting
adjustment being also required although this may be dispensed with if desired.
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:-
:
1. In apparatus for trimming the edges of pile fabrics mats and the like the
employment with a cutting device at one edge of a table of means for giving
such table both a vertical and lateral movement substantially as and for the
purpose described.
2. In apparatus for trimming the edges of pile fabrics mats and the like the
employment with an angular cutting device at one edge of a table and projecting

page_text: into same of means for giving such table both a vertical a lateral and a tilting
movement substantially as and for the purpose described.
3. In apparatus for trimming the edges of pile fabrics mats and the like the
employment with a table and a cutting device mounted on a vertical or approxi-
mately vertical driven shaft at one edge of said table and projecting into same
of a frame in which such table is carried and is moveable laterally, and means
for raising and lowering such frame substantially as and for the purpose described.
4. In apparatus for trimming the edges of pile fabrics mats and the like the
employment of a conical cutting cylinder and a cutting blade situated at the edge
of a table and means for raising and lowering and moving laterally such table
substantially as and for the purpose described.
5. The improved apparatus constructed substantially as described and illus-
trated in the accompanying drawing.
Dated the 28th day of November 1899
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, W.C.,
Chartered Patent Agent for the Applicants.