Year: 1887

page_text: Date of Application, 19th May, 1887
Complete Left, 14th Jan., 1888
Complete Accepted, 17th Feb., 1888
I JAMES OSWALD of Hendham Vale Mill, Harpurhey, near Manchester, Manager,
do hereby declare the nature of my invention to be as follows:-
--
The object of this invention is the application to looms of a new cutting motion for
cutting the pile in the manufacture of plushes, imitation seal-skin and similar fabrics
whereby considerable saving in labor is effected inasmuch as one minder can attend
to two looms instead of one as heretofore and the overlooker himself can attend to
double the number of looms than has hitherto been practicable. The loom also works
easier and is more steady in its action whilst the pile is cut exactly in the middle of
both fabrics by both the to and fro motion of the knife and with more certainty than
heretofore.
In performing my invention I employ a knife which extends horizontally from one
side of the fabric to the other and which is caused to reciprocate to and fro and at the
same time in a curvilinear direction by being arranged with a series of curved slots
through each of which a stud fixed to the stationary frame passes and thus ensures
the knife in its reciprocating movement also partaking of a movement corresponding
to the curve of such slots or by substituting diagonal slots 1 impart a combined
diagonal and to-and-fro motion to the knife.
This improved mechanism is found in practise to be a motion suited to cutting the
pile in this particular class of fabric and which, as cut, is led off on to separate rollers
as is well understood.
The required reciprocating motion is obtained by connecting the end of the knife
to a revolving crank pin operated by bevil gearing from any convenient shaft in
the loom.
JOHN G. WILSON,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or Applicable to Looms for Cutting Pile Fabrics.
I JAMES OSWALD of Hendham Vale Mills Harpurhey near Manchester Manager
do hereby declare the nature of my said 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 the application to looms of a new cutting motion
for cutting the pile in the manufacture of plushes, imitation sealskin and similar
fabrics whereby an increased production of fabric from a loom in a given time is
obtainable considerable saving in labor is also effected and the over-looker himself can
attend to a larger number of looms than has hitherto been practicable. The loom
also works easier and is more steady in its action whilst the pile is cut exactly in the
middle of both fabrics and this by both the to and fro motion of the knife and with
more certainty than heretofore.
On the accompanying drawing Fig. 1 is a front sectional view and Fig. 2 is a plan
view of my improved mechanism for cutting pile fabrics (shewn broken in both views
for want of space to illustrate it in its entirety) Fig. 3 is an end sectional view of
Fig. 2 on the line.
Fig. 4 is a plan view of the top of the bar or frame for supporting the knife and
Figs. 5 and 6 are plan views of modifications of my invention.
In all the views a is a bar or plate extending across the loom from side to side and
forming a platform upon the top of which the reciprocating knife or blade b is
mounted, and kept in position by the projecting clips or fingers c. The top of this
bar a is provided with a pair of curved slots d which are by preference dove-tailed or
angular in cross-section (as illustrated more clearly in Fig. 3) and are designed to
receive a correspondingly formed bowl or roller e mounted upon a stud el projecting
from the underside of the knife b. It will now be apparent that if the knife b is
caused to reciprocate to and fro in the direction of its length by connecting it at one
end (by means of a connecting rod f) to a revolving crank pin g operated by worm
or bevil gearing from any convenient shaft in the loom-such knife will be compelled
at the same time to partake also of a curvilinear motion corresponding to the curve
or throw of the slots d.
By thus mounting the knife 6 in front of the double material as it comes from the
loom and so that such knife extends horizontally across the loom and beyond each
side or selvage of the fabric being woven I am enabled by the peculiar scythe like
cutting action afforded by the front or sharpened edge of the knife to cut the pile all
across simultaneously exactly in the middle of both fabrics and this by both the to
and fro motion of the knife with a degree of certainty and with an economy of power
and complete immunity from breakage not hitherto attainable. It is also found in
practice that the loom can be driven at an accelerated speed.
Instead of employing curved slots as hereinbefore described I can impart a
curvilinear motion to the knife by means of a pair of radial arms h affixed one

page_text: extremity to the knife b and the other to the supporting bar as indicated in Fig. 5 or
a combined diagonal and to and fro motion may be imparted to the knife b by
employing a diagonal slot i as indicated in Fig. 6-these I should consider to be
convenient modifications of my invention.
It will be obvious that my improvements are equally applicable to new or existing
looms employed for weaving pile fabrics.
I wish it to be understood that I make no claim to a reciprocating knife save and
except when so mounted as to partake of a combined reciprocating and curvilinear
or diagonal motion as hereinbefore described.
Having thus particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is
1st. The improvements in or applicable to looms for cutting pile fabrics substantially
as and for the purposes herein before described.
2nd. In a loom for weaving pile fabrics the employment of a reciprocating knife
mounted and operating substantially as and for the purposes hereinbefore described
and illustrated on the accompanying drawing.
JOHN G. WILSON,
Agent for the Applicant.