Improvements in the Method of and Apparatus for Cutting the Loops of Looped Pile Carpets and other Looped Pile Fabrics.
Year: 1897

page_text: Improvements in the Method of and Apparatus for Cutting the
Loops of Looped Pile Carpets and other Looped Pile Fabrics.
I. BENJAMIN WALKER, of 75, Ferncliffe, Bingley, in the County of York, Buyer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the method of and apparatus for cutting
looped pile fabrics.
For this purpose I employ a rotary cutter having a number of projecting knives
or cutting edges adapted to engage the loops and cut them whilst the fabric is passed
through the machine. The fabric may be supported on a suitable bed or support
adjacent to the rotary cutter and be passed through the machine in a similar manner
or approximately similar manner to that in which fabrics are passed through an
ordinary cropping machine.
The rotary cutter is preferably the full width of the fabric to be cut and may
consist of a number of hooked or curved knives fixed in or on to a suitable cylinder
or other suitable foundation. The knives may be arranged helically or in any other
suitable way and their cutting edges are towards the direction of rotation. They
may be fixed in lugs or in any other convenient way. Or the cutting knives or teeth
may be formed on the peripheries of discs mounted side by side on a suitable
shaft.
.
In any case when it is desired to obtain striped effects produced by alternate stripes
of cut and un-cut pile I leave blank spaces without knives in the rotary cutter the
width the un-cut stripes are required to be.
BOULT & WADE,.
Agents for the Applicant.
Improvements in the Method of and Apparatus for Cutting the
Loops of Looped Pile Carpets and other Looped Pile Fabrics.
I, BENJAMIN WALKER, of 75, Ferncliffe, Bingley, in the County of York, Buyer,
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:-
This invention relates to improvements in the method of and apparatus for cutting
the loops of looped pile fabrics.
For this purpose I employ a machine having a rotary cutter consisting of a number
of projecting knives or cutting edges adapted to engage the loops and cut or divide

page_text: them without waste whilst the fabric is passed through the machine. The machine
is similar in construction to an ordinary cropping machine excepting that the
improved form of cutter is used instead of the usual spiral or helical cropping knife
and shearing edge or blade and the fabric is passed through the machine in a similar
way to that in which it is passed through a cropping machine.
In the accompanying sheet of drawings forming a part of this specification
similar letters of reference indicate corresponding parts in each of the figures.
Figure 1, is a cross section of a rotary cutter. The arrow indicates the direction
of rotation.
Figure 2, is a side view of the same with the middle part broken away in order to
show it full size as well as more clearly illustrate its construction. In practice the
width of the cutting part is made a little wider than the fabric to be cut.
Figure 3, is a separate view of one of the cutting dises and Figure 4, is a section
of the same on the broken line a, b.
The discs A are mounted side by side upon the shaft B and are clamped together
between the collar C fixed upon the shaft and the loose collar D by the nut E screwed
on the shaft. The key F in the shaft engages the notches A2 in the discs and
ensures that they revolve with the shaft. The cutting knives A³ formed round the
peripheries of the discs are pointed as shown and the edges A4 are ground to a knife
edge. In use the rotary cutter is driven at a high speed and the pile fabric to be cut
is passed along sufficiently close to it to enable the points of the rotary knives to
engage the loops and divide or cut them without waste.
Any other suitable form of rotary cutter adapted to divide the loops in this way
may be employed..
In any case when it is desired to obtain striped effects produced by alternate stripes
of cut and uncut pile I leave blank spaces without knives the width the un-cut stripes
are required to be.
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 what I
claim is
A machine for cutting looped pile fabrics provided with a rotary cutter having
cutting knives adapted to engage the loops and cut or divide them without waste,
substantially as herein shown and described.