Improvements in Apparatus for Cutting the Pile of Pile Fabrics.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Cutting the Pile of Pile Fabrics.
A communication from abroad by LA SOCIÉTÉ MOTTE-BOSSUT FILS ET MENGERS, of
Roubaix (Nord), France, Manufacturers.
I, GEORGE BELOE ELLIS, of the Firm of J. C. Mewburn and Ellis, of 55 and 56,
Chancery Lane, in the County of London, Chartered Patent Agents, do hereby
declare the nature of this invention to be as follows: :-
This invention relates to improved apparatus for cutting the pile of cotton
velvet and other pile fabrics.
This apparatus has been especially designed with a view of realizing the following
advantages:
1. Compulsory disengagement of the knife each time the knife enters the
fabric to be cut.
2. Immediate and rapid disengagement.
3. Absolute impossibility for the apparatus after disengagement to tear the
fabric.
The improved apparatus comprises a knife with its handle and a knife holder or
carrier by means of which motion is transmitted to the knife. The knife is fixed to
the knife holder in the following manner: The handle of the knife is inserted in
a guide formed in the lower face of the knife holder and after insertion it is held
in place by means of say two pins arranged right and left of the axis of the knife.
These pins which are capable of vertical movement, are adapted to be operated by
means of a lever to which a tendency to rise is imparted by a spring, but which is held
in its depressed position by a catch provided on a vertical piece which is arranged
at the forward part of the apparatus and bears upon the knife. This vertical piece
is capable of pivoting about a fixed axle or point in the end of a fixed arm. This
vertical piece which serves to operate the whole of the disengaging mechanism,
terminates at its lower part in a small fork having say, three teeth or prongs and
at its upper part in the above mentioned catch under which takes the end of the
lever aforesaid.
In normal working, the prongs of the fork are situated approximately in a plane
perpendicular to the direction of the motion of the knife. Should the knife enter
the ground or backing of the fabric, the three prongs catch simultaneously in the
fabric and are pushed backward thereby causing the fork-carrying piece to
oscillate around its pivot in the fixed arm, with the result that the end of the
lever is disengaged from the catch. Then immediately the lever rises under the
action of its spring and carries with it in its upward movement the two pins which
are thus drawn out of the handle of the knife, thereby disengaging the handle from
the knife.
Now as soon as the knife holder which continues to move have moved forward
through a small distance, the knife, whose handle has then moved out of the guide
in the knife holder, remains stationary in the fabric.

page_text: The three pronged fork has also the following advantages: -It facilitates the
placing of the apparatus in the proper position as the central prong finds a place
in a corresponding groove in the knife; and should the apparatus not have been
mounted properly, then at the moment when it is desired to use the knife, one
or other of the prongs will catch in the fabric and thus disengage the apparatus.
A small coiled spring may be arranged between the fork and the fork-carrying
piece for the purpose of facilitating the replacing of the knife by enabling the
length of said piece to be temporarily reduced.
The guide piece is preferably made in the form of a trapezium having its rear
end appreciably wider than its forward end for the purpose of allowing the knife
and its handle to pass freely in the guide in such a manner that the knife holder
in continuing its forward movement after the disengagement of the apparatus shal!
not in any case be liable to move the knife.
The knife is held perfectly horizontal in the fabric into which it has entered
by means of the arrangement below the handle of a horizontal plate which serves
at its base. The trapezium shaped guide is provided at its forward end with a beak
which is turned up slightly in such a manner as to obviate the knife holder when
disengaged but still continuing its forward movement from catching in the fabric
and thus tearing it, or from entering any hole which might. he present, in the
fabric and thus widening the said hole.
Further security is ensured by mounting the fork-carrying. piece so as to be
capable of oscillating completely around its pivot, in such a manner that when
disengaged the prongs of the fork shall no longer be able to catch in the fabric what
ever may be the direction of movement of the knife holder.
Dated this 9th day of April 1898.
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Chartered Patent Agents.
Improvements in Apparatus for Cutting the Pile of Pile Fabrics.
A communication from abroad by LA SOCIÉTÉ MOTTE-BOSSUT FILS ET MENGERS; of
Roubaix (Nord), France, Manufacturers:
I, GEORGE BELOE ELLIS, of the Firm of J. C. Mewburn and Ellis, of 55 and 56,
Chancery Lane, in the County of London, Chartered Patent Agents, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to improved apparatus for cutting the pile of cotton
velvet and other pile fabrics.
This apparatus has been especially designed with a view of realizing the following
advantages:
1. Compulsory disengagement of the knife each time the knife enters the
fabric to be cut.
2. Immediate and rapid disengagement.
3. Absolute impossibility for the apparatus after disengagement to tear the
fabric.
A suitable form of construction of the improved apparatus is illustrated in the
accompanying drawings in which :-
-
Figures 1 and 2 are respectively a side elevation and a plan of the apparatus,
showing the pile-cutting knife in its operative position.

page_text: Figure 3 is a front end elevation of Figure 1.
Figure 4 is a cross section taken on the line 4-4 in Figure 1.
Figure 5 is a side elevation similar to Figure 1, but showing the positions of the
parts when the pile-cutting knife has been disengaged and thus rendered
inoperative.
As shown in the drawings the improved apparatus comprises a pile-cutting
knife X with its handle Y and a knife holder or carrier Z by means of which motion
is transmitted to the knife X. The knife X is fixed to the knife holder Z in the
following manner:-The handle Y of the knife is inserted in a guide slot a a¹
formed in the lower face of the knife holder Z and after insertion it is held in
place by means of say two pins H H arranged right and left of the axis of the knife.
These pins which are capable of vertical movement, are carried by a piece h which
is adapted to be operated by means of a lever L to which a tendency to rise is
imparted by a spring F, but which is held in its depressed position (shown in
Figure 1) by a catch A provided on a vertical piece B which is arranged at the
forward part of the apparatus and bears upon the knife. This vertical piece B
is capable of pivoting about a fixed axle or point in the end of a fixed arm K.
This vertical piece B which serves to operate the whole of the disengaging
mechanism, terminates at its lower part in a small fork f having say, three teeth
or prongs, and at its upper part in the above mentioned catch A under which takes
the end C of the lever L aforesaid as shown in Figure 1.
In normal working, the prongs of the fork f are situated approximately in a
plane perpendicular to the direction of the motion of the knife X. Should the
knife Xenter the ground or backing of the fabric, the three prongs catch simul-
taneously in the fabric and are thereby pushed backward, thereby causing the fork-
carrying piece B to oscillate around its pivot O in the fixed arm K, with the result
Then immediately
that the end C of the lever L is disengaged from the catch A.
the lever L rises under the action of its spring F and carries with it in its upward
movement the two pins H H which are thus drawn out of the handle Y of the knife,
thereby disengaging the handle from the knife.
Now whilst the knife holder Z continues to move forward through a small dis-
tance, the knife, whose handle Y has then moved out of the guide slot a a¹ in the
knife holder Z, remains stationary in the fabric.
The three pronged fork f has also the following advantages: -It facilitates the
placing of the apparatus in the proper position as the central prong finds a place
in a corresponding groove in the knife X and should the apparatus not have been
mounted properly, then at the moment when it is desired to use the knife, one or
other of the prongs will catch in the fabric and thus disengage the apparatus.
A small coiled spring E may be arranged between the fork f and the fork-
carrying piece B for the purpose of facilitating the replacing of the knife by
enabling the length of piece B to be temporarily reduced.
The guide piece slot a a¹ is preferably made in the form of a trapezium having
its rear end a appreciably wider than its forward end a for the purpose of allowing
the knife X and its handle Y to pass freely in the guide a a¹ in such a manner that
the knife holder Z in continuing its forward movement after the disengagement of
the apparatus shall not in any case be liable to move the knife.
The knife is held perfectly horizontal in the fabric into which it has entered by
means of the arrangement of a horizontal plate M on the knife handle Y. The
9 which
trapezium-shaped guide slot a á¹ is provided at its forward end with a beak
is turned up so as to obviate any liability of the knife holder Z (when disengaged,
but still continuing its forward movement) catching in the fabric and thus tearing
it, or entering any hole which might be present in the fabric and thus widening
the said hole.
Further security is ensured by mounting the fork-carrying piece B so as to be
capable of oscillating completely around its pivot 0 in such a manner that when
disengaged the prongs of the fork f shall no longer be able to catch in the fabric
whatever may be the direction of movement of the knife holder Z.

page_text: Having now particularly described and ascertained the nature of the said
invention as communicated to me and in what manner the same is to be performed,
I declare that what I claim is:.
The improved apparatus for cutting the pile of pile fabrics, constructed, arranged
and operating, substantially as described with reference to the accompanying
illustrative drawings.
Dated this 6th day of January 1899.
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London. Chartered Patent Agents.