Improvements in the Manufacture of Double-pile Fabrics.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Double-pile Fabrics.
I, OTTO HALLENSLEBEN, Resident of Hilden, in the Province of the Rhine,
German Empire, Manufacturer, do hereby declare the nature of this invention
to be as follows
During the last years many experiments have been made to manufacture
pile fabrics upon double-pile looms instead of weaving with bars having at one
extremity blades for cutting off the pile-threads. In fabrics having long naps
there is found the inconvenience that the maps owing to the tension of the pile-
threads constantly are shrinking.
The object of the present application is to combine a double pile-loom with an
ordinary pile-loom and to thereby create the possibility to obtain even in webs
with long naps a plush or a pile-fabric, the naps of which are of uniform
height.
With the arrangement forming the subject matter of the present application,
the double pile-loom which I employ, is the ordinary one and also for the
ordinary loom all apparatus known for actuating the bars can be employed
and therefore I abstain from entering into details about these parts.
The characteristic feature of my invention consists in the fact, that by the
weaving in of large bars of steel, both ground webs constantly are kept in a
uniform distance from another, and that by the combination of the bars with
the blade, the naps are cut exactly in the middle of the height of the blade
when the same is withdrawn. Whilst hitherto with the ordinary pile-looms
the blade was fixed to the bar, in my invention I must abstain from arranging
a blade in the middle of the rod for the reason that they in this case lie
in front of each other, consequently bend the bars and owing to the friction
would become blunt.
My invention will be more fully understood with reference to the accompany-
ing drawing, in which the same is clearly illustrated.
In the drawing Figure 1 shows the front view of the looms, the cutting blades
arranged thereto,
Figure 2 illustrates the position of the bars between the particular pile-
threads,
Figures 3, 4 & 5 represent detail views of the cutting mechanism.
As can be seen from Figure 1 the same consists of small blades a provided
with hooks b. The latter are fixed to a steel-band in a distance correspond-
ing to the breadth of the web, the steel band c is conducted over two discs d,
the left one of which is fixed to the side-wall of the loom whilst the right
one is in connection with the outer side wall of the apparatus actuating the
bars. The latter arrangement allows of the employment of a band as long as
possible whereby consequently many blades can be kept working alternately.
The bar e as illustrated in Figures 4 & 5 at the left extremity is provided with
a slot and at this part is bent somewhat (Figure 5). As soon as the hook
has taken into the slot provided in the right-hand side and commenced to draw
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page_text: out the bars, the slot in the bent lefthand extremity slides over the hook b
of the blade a and withdraws the same so that its cutting part separates the
pile-threads just in front of the bars. When the latter now are withdrawn
completely in order to have them separated from the blade it suffices to push
them back so that they lie in front of the shed. ready to be inserted. When
the blade is drawn over to the right hand side, the band c has moved so far that
before the next bar there is placed again another blade which when withdrawn
cuts the next layer of pile threads in the manner heretofore described.
Evidently the arrangement might be improved by employing a sharpening
mechanism sharpening automatically the blades during the work.
Doted this 22nd day of December 1800
ROBERT WEYLER,
31A, Luisen Strasse, Berlin, N.W., Germany,
Agent for the Applicant.
improvements in the Manufacture of Double-ple Fabrics.
I, OTTO HALLENSLEBEN, of Hilden, in the Province of the Rhine, German
Empire, Manufacturer, 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:-
During the past few years many attempts have been made to manufacture
pile fabrics upon double-pile looms instead of weaving with wires having at one
extremity blades for cutting the pile-threads. In manufacturing fabrics having
a long nap an inconvenience has arisen inasmuch as the nap owing to the tension
of the pile-threads shrinks unevenly.
The object of the present application is to combine a pile-loom for producing
double plush with an ordinary pile-loom thereby making it possible to obtain,
even in webs with long nap, a plush or a pile-fabric the nap of which is of uniform
length.
In the arrangement forming the subject matter of the present application the
double pile-loom, which I employ, is as usually constructed and also all the
known apparatus in the ordinary pile-loom for actuating the bars can be employed
and therefore I abstain from entering into details about such parts.
The characteristic feature of my invention consists in the fact, that by the
weaving in of large bars of steel both ground webs are constantly kept at a
uniform distance from each other, and that by the combination of the bars with
the blades, the naps are cut exactly in the middle of the width of the bar when
the same is withdrawn. Whilst hitherto with the ordinary pile-looms the blade
has been fixed to the wire, in my invention I abstain from arranging a blade
in the middle of the bar for the reason that they, in that case, lie against each
other, and consequently bend the bars and owing to the friction become blunt.
My invention will be more fully understood with reference to the drawings
filed with the Provisional Specification, in which the same is clearly illustrated.
In the drawing, Figure 1 shows the front view of the looms, and the arrange-
ment of the cutting blades.
Figure 2 illustrates the position of the bars between the particular pile-threads,
Figures 3, 4 and 5 represent detail views of the cutting mechanism.
As can be seen from Figure 1 the arrangement consists of small blades a pro-
vided with hooks b, see Figure 5 and fixed to an endless steel-band c at intervals

page_text: corresponding to the breadth of the web, the steel band c is conducted over two
pulleys d, the lefthand one of which is mounted in bearings fixed to the side-
frame of the loom whilst the righthand one is mounted in bearings on the outer
side frame of the apparatus actuating the bars. The latter arrangement allows
of the employment of as long a band as possible, whereby consequently many
blades can be kept working in succession. The bar e, as illustrated in Figures 4
and 5 at its left extremity is provided with a slot f and at this part is bent
somewhat (Figure 5). As soon as the hook has taken into the slot provided
in the righthand side and commenced to draw out the bars, the slot in the bent
lefthand extremity engages with the hook 6 of the blade a and draws the same
so that its cutting edge separates the pile-threads near the rear end of the bar.
When the latter has been withdrawn completely, in order to have them separated
from the blade it suffices to push them back so that they lie in front of the shed
ready to be inserted. In drawing the blade over to the righthand side, the
band c has been moved so far that before the next bar is inserted another
blade a is in position which when withdrawn cuts the next layer of pile threads
in the manner above described.
Evidently I may, if desired, employ a sharpening mechanism so arranged
as to sharpen the blades automatically during the work.
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:
1. In double pile-looms, the combination of an ordinary pile-loom with bars
for producing pile-fabrics with long nap of uniform length, substantially as
and for the purposes described.
2. In double pile-looms, the combination of an ordinary pile-loom, bars in-
serted between the double pile-webs, and a cutting-device consisting of blades
secured to an endless band running over pulleys, as and for the purpose
described.
3. In double pile-looms, the combination of an ordinary pile-loom, bars in-
serted between the double pile-webs, each having a recess at its one extremity,
and blades provided with hooks adapted to engage said recess, as and for the
purpose described.
4. The construction of apparatus, substantially as described and shown, and
for the purpose set forth.
Dated this 22nd day of September 1900.
ROBERT WEYLER,
Agent for the Applicant.