AN IMPROVED MACHINE FOR CLIPPING THE THREADS OR FIBRES OF TISSUES OR FABRICS
Year: 1880

page_text: LETTERS PATENT to Rudolph Weiss, Engineer, of Ventnor House, Nottingham,
for an Invention of "AN IMPROVED MACHINE FOR CLIPPING THE THREADS
OR FIBRES OF TISSUES OR FABRICS,"
PROVISIONAL SPECIFICATION left by the said Rudolph Weiss at the Office
of tho Cominissioners of Patents on the 5th April 1880.
RUDOLPH WEISS, Engineer, of Ventnor House, Nottingham. AN IMPROVED
MACHINE FOR CLIPPING THE THREADS OR FIBRES OF TISSUES OR FABRICS."
This Invention consists principally in placing the threads or fibres which are to
be cut or clipped on to points or teeth, leaving the rest of the tissue or fabric
underneath the teeth, and then cutting off with a knife the threads or fibres thus
separated from the body of the tissue or fabric. Also in maintaining the threads
to be cut or clipped in the same position they occupied before passing onto the
teeth by pressing them against the teeth by means of a rotating cylinder.
The tissue or fabric on which there are threads or fibres to be clipped is
introduced between a plate and a number of teeth formning a "comb" or "card."
The construction and position of these two parts of the machine regulates or
determines the passage of the body of the tissue or fabric between the plate and
the comb, and the passing of the threads to be clipped onto tho comb.
The threads or fibres to be clipped are caught by a rotating cylinder which
presses against the comb, and are kept in the same position they occupied on the
tissue or fabric before the introduction of the latter under the comb.
A knife or blade placed between the comb and the body of the tissue is then put
in motion, and its cutting edge pressing against the under sides of the teeth thus
forms a series of scissors by which all the threads or fibres placed on the comb
aro cut or clipped above their point of attachment to the body of the tissue or
fabric.
It is obvious that my Invention is susceptible of slight modifications without any
departure from its essential nature, as, for instance, the cutting knife instead of
having a rectilinear motion may have an oscillating or any other suitable motion,
and when in action the machine may either advance to the work or the work may
be caused to advance to the machine.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Rudolph Weiss in the Great Seal Patent Office on the 5th October
1880.
RUDOLPH WEISS, Engineer, of Ventnor House, Nottingham. "AN IMPROVED
MACHINE FOR CLIPPING THE THREADS OR FIBRES OF TISSUES OR FABRICS:"
This Invention consists principally in placing the threads or fibres which are to
be cut or clipped on to points or teeth, leaving the rest of the tissue or fabric
underneath the teeth, and then cutting off with a knife the threads or fibres thus
separated from the body of the tissue or fabric. Also in maintaining the threads
to be cut or clipped in the same position they occupied before passing on to the
teeth by pressing them against the teeth by means of a rotating cylinder.
In Figures 1 and 2, which show a vertical and a horizontal section respectively,
the tissue or fabric a, a, on which there are threads or fibres b, b, to be clipped
is introduced between a plate c and a number of teeth d, d, forming a "comb" or
"card."
The construction and position of these two parts c and d of the machine
regulates or determines the passage of the body of the tissue a or fabric between
the plato c and the comb d and the passing of the threads b, b, to be clipped on to
the comb. The threads or fibres to be clipped are caught by a rotating cylinder E
which presses against the comb d, and aro kept in the same position they
occupied on the tissue or fabric before the introduction of the latter under the
comb.
A knife or blade placed between the comb and the body of the tissue is then put
in motion and its cutting edge ff, pressing against the under sides of the teeth thus
forms a series of scissors. by which all the threads or fibres placed on the comb
are cut or clipped above their point of attachment to the body of the tissue or
fabric.
In Figure 2 the fabric is removed, but the threads b, b, are seen on the points of
the comb d. This enables the surface of the plate c to be more clearly shown.
Figure 3 is a view looking on to the back of the cutting knifo f, the teeth of
the comb & being clearly seen in end view between the knife fand the pressure
roller E.
It is obvious that my Invention is susceptible of slight modifications without
any departure from its essential nature, as, for instance, the cutting knife f instead
of having a rectilinear motion may have an oscillating or any other suitable motion,
and when in action the machine may either advance to the work or the work may
be caused to advance to the machine.
The teeth d may have the same length so that their points form a straight line
instead of being of different lengths, as shown in Figure 2.
The value of the plate C in this Figure consists of its ribbed projections placed
or arranged between the points of the teeth d. I sometimes for these projections
by the upper surfaces of the teeth d³, as shown in Figuro 4, and arranged in the
form of a comb.
In the following description and Figures the points or teeth d take the place
of the plate c shown in Figures 1 and 2, and the points of the teeth d will be all
of the same length.
Figure 5 is a cross section in which the fabric a, a, is clearly shown as passing
under the points d, d, of the comb whilst the threads b, b, to be cut are seen on
the top of the points.
In Figures 6 and 7 the points or teeth d, d, of the upper comb are furnished
with springs g, g, on each side, which serve to grip the threads to be cut as they
are passing over them and until they are severed by the knife f.
To prevent the points d of the comb passing through the body a of the tissue or

page_text: fabric I sometimes use the following additional machinery.
In each interval or
space between the teeth a, d', I place a pair of hook plates m, m, similar to
Figure 8. In Figure 9 the pieces m, m, are shown in their position relatively to
the other parts of the machinery. They have an oscillating motion to the extent
indicated by the dotted lines y, z, and on the fixed shaft x. By this oscillating
motion the hooks 2, r, describe alternately the curve 8, t. At the position & the
hooks reach the height necessary to catch the body of the tissue which passes
over the pieces d', d, and the vibratory motion of the hooks, r, causes the body
of the tissue, when caught by the points of the hooks 2, 7, to be depressed to the
position between the points c, d, and lower than the ends of the points d, d, also
lower than the surfaces of d', d', which form ribs or projections equivalent to
those represented in the plate c, Figures 1 and 2.
By these means the body of the tissue is brought in a position which renders it
impossible to pass over and through the points d, d. It is obvious that instead
of two pieces or hook plates m, m, I may have one only or more than two
between the teeth d', d', also the length of them, as well as their breadth u, v,
may be more or less than is shown in Figures 8 and 9. The hook plates m, m,
are thinned down at one edge, as shown in Figure 8, and when put back to back
are thus enabled to be placed between the teeth of the comb d', d. The said plates
derive their motion from cams or other equivalent machinery.
Having now described the nature of my said Invention, and in what manner
the same is to be performed, I declare that I claim :-
The improved machine for clipping the threads or fibres of tissues or fabrics,
substantially as hereinbefore described and shown in the Drawings annexed.
In witness whereof, I, the said Rudolph Weiss, have hereunto set my hand
and seal, this Fourth day of October, One thousand eight hundred and
eighty.
RUDOLPH WEISS. (L.S.)