IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SEVERING OR DIVIDING DOUBLE PILED FABRICS
Year: 1883

page_text: LETTERS PATENT to John Henry Johnson, of 47 Lincolns Inn Fields, in
the County of Middlesex, Gentleman, for an Invention of "IMPROVEMENTS
IN MACHINERY OR APPARATUS FOR SEVERING OR DIVIDING DOUBLE PILED
FABRICS communicated to him from Théophile Diederichs a person resident
at Bourgoin (Isère) in the Renublic of France Manufacturer.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson at the
Office of the Commissioners of Patents on the 6th April 1883.
"
JOHN HENRY JOHNSON of 47 Lincoln's Inn Fields in the County of Middlesex
Gentleman "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SEVERING OR
DIVIDING DOUBLE PILED FABRICS a communication to me from Theophile
Diederichs a person resident at Bourgoin (Isère) in the Republic of France
Manufacturer
This Invention relates to improvements in machinery or apparatus for cutting
asunder double piled fabrics into single or velvet pile fabrics whereby the said
cutting is performed in a more accurate rapid and efficient manner than by the
means heretofore employed.
The distinguishing feature of this invention consists in the employment of two
toothed plates or cutters in the form of a comb. These two plates or cutters slide
one over the other with a to and fro or reciprocating motion and their teeth which
are provided with cutting edges on both sides cut the pile threads by an action
analogous to the action of small scissors or of the knives of reaping or clipping
machines. This improved mode of severing double piled fabrics does not present
the disadvantages attending the use of the knives or blades ordinarily heretofore
employed. The toothed cutters employed according to this Invention may be
applied either in the loom or in a separate cutting machine.
The working parts of this improved apparatus for cutting piled fabrics are
carried by a stand or frame provided with brackets and bearings for the reception of
the shafts. A main shaft is provided with a driving pulley and with a crank pin
or excentric which by means of a connecting rod imparts reciprocating motion to
one of the two toothed blades or cutters. This blade or cutter slides upon the

page_text: other toothed blade which is of similar shape being connected to the latter by
screws passing through slots by which screw the pressure can be adjusted. The
said second blade may be made in one piece or in several pieces joined together
and is attached to a fixed bar supported by brackets at each extremity. The pile
is presented between the teeth of the two blades which are so adjusted that their
points occupy a truly central position between the grounds of the double fabric
that is to be severed. The pile threads are then cut by the action of the reciprocating
blade.
The fabric in the piece as it comes from the loom is led between two bars which
are capable of being adjusted to or from each other according to the length of the
pile that is to say the thickness of the double fabric. Before entering between
these bars the fabric is caused to pass between two rollers provided with pins on
their periphery and geared together by toothed wheels fast on their axes. On the
extremity of one of these rollers is wound a cord connected to a counterweight in
order to give the requisite tension to the fabric which is deposited upon a board 1
also serving to receive the two portions of the fabric after it has been cut. In
place of this board three rollers may be employed one to deliver and the two to
wind up the fabric.
The two severed portions of the fabric are directed on to this board by rollers
furnished with pins and driven from the main shaft by the intervention gearing
which may consist of two wheels gearing with endless screws and keyed upon an
intermediate shaft carrying a bevel wheel. This bevel wheel is in gear with a
corresponding wheel fixed on one extremity of another intermediate shaft provided
at the other extremity with a worm wheel driven by a worm on the end of the
driving shaft.
2

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Henry Johnson in the Great Seal Patent Office on the
5th October 1883.
"
JOHN HENRY JOHNSON of 47 Lincolns Inn Fields in the County of Middlesex
Gentleman "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SEVERING OR
DIVIDING DOUBLE PILED FABRICS a communication to me from Théophilo
Diederichs a person resident at Bourgoin (Isère) in the Republic of France
Manufacturer
This Invention relates to improvements in machinery or apparatus for cutting
the pile threads of double piled fabrics that is to say fabrics woven with a double
ground or cloth and which when severed form single or velvet pile fabrics. By
means of the improved apparatus constructed according to this Invention as herein-
after explained the operation of cutting the pile threads of the said cloth is enabled
to be performed with greater precision and rapidity and with less danger of
mishaps than is possible with the apparatus heretofore employed
The Invention consists essentially in the employment of a pair of plates provided
with doubled edged cutting teeth of suitable form and which sever the pile threads
by sliding one of the other with a reciprocating action similar to that of a
horse clipper. By the employment of these cutters operated by suitable mechanism
as hereinafter described the dangers and disadvantages attending the use of single
acting knives and other devices ordinarily employed are obviated
The improved cutting apparatus may be combined with the loom upon which
the double cloth fabric is woven so as to sever the pile threads directly as the
material leaves the loom or it may be arranged to stand alone and work
independently
And in order that the said Invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures on the annexed sheets of drawings the same letters of referenco
indicating corresponding parts in all the figures
Figures 1 and 2 are respectively a front and side elevation of the complete
machine
Figures 3 and 4 are details of the cutters the said Figures being respectively a
transverse section and side elevation drawn to a larger scale
The working parts of this improved apparatus for cutting piled fabrics are
carried by a suitable stand or frame T provided with brackets and bearings for the
reception of the shafts. The apparatus is operated by a shaft B provided with a
driving pulley A and with an excentric pin C or its equivalent which by means of
a connecting rod D imparts reciprocating motion to a cutter E forming one of a
pair of toothed blades or cutters E. E¹
The cutter E slides upon the cutter E' which is of similar shape and is con-
nected to the cutter E¹ by screws V passing through slots in the blade E These
screws also enables the pressure on the blade E to be adjusted
The stationary cutter El may be made in one piece or in several pieces joined
together and is attached to a fixed bar G supported by brackets at each extremity.
The pile threads of the double fabric shown at x engage between the double edged
teeth of the two cutters E, E' which are so adjusted that their points occupy a
truly central position between the two grounds of the double fabric and on recipro-
cating motion being imparted to the cutter E the said threads are severed with
great regularity and precision and enable the two grounds to be led away in
opposite directions as hereinafter described
The double fabric a in the piece or as it comes from the loom is led between two

page_text: bars Hand H which are capable of being adjusted to or from each other according
to the length of the pile threads
Before entering between the bars H. H. the fabric is caused to pass between two
rollers QQprovided with pins on their periphery and geared together by toothed
wheels R. R' fast on their axes. On the extremity of one of these rollers is wound
a cord S acting as a brake being connected to a counterweight S' in order to give
the requisite tension to the fabric which is deposited upon a board or box U also
serving to receive the two portions of the fabric after it has been cut as shown
at y y figure 2. In place of this board three rollers may be employed one to deliver
and one to wind up the fabric
The two cut or severed portions are directed on to this board or into this box
by drawing rollers I I' furnished with pins and driven from the main shaft B by
the intervention of two wheels J. J. gearing with endless screws K K¹ keyed upon
a shaft L carrying a bevel wheel M. This bevel wheel is in gear with a corre-
sponding wheel M₁ fixed on one extremity of a shaft N provided at the other
extremity with a wheel O driven by a worm P on the end of the driving shaft B
Having now described and particularly ascertained the nature of the said
Invention and the manner in which the same is or may be used or carried into
effect I would observe in conclusion that what I consider to be novel and original
and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is.
First. In apparatus for severing or dividing the pile threads of double piled
fabrics the employment of toothed cutters sliding one over the other and acting to
sever the threads substantially as herein before described
Second. In apparatus for severing or dividing the pile threads of double piled
fabrics the combination with cutters as claimed by the preceding claiming clause of
mechanism for imparting the requisite motion thereto substantially as herein before
described and illustrated in the accompanying drawings
In witness whereof I the said John Henry Johnson have to this my
Specification set my hand and seal this fourth day of October One thousand
eight hundred and eighty three
T
NDגמ
ΤΟΤΤΑΤΟΥ
L