AN IMPROVED DEVICE FOR REGULATING THE SPEED OF WARP-BEAMS IN LOOMS
Year: 1882

page_text: LETTERS PATENT to Henry Harris Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for an Invention
of "AN IMPROVED DEVICE FOR REGULATING THE SPEED OF WARP-BEAMS IN
LOOMS." A communication from abroad by Messieurs Tassigny frères et
Compagnie, of Paris, France.
PROVISIONAL SPECIFICATION left by the said Henry Harris Lake at the
Office of the Commissioners of Patents on the 15th February 1882.
HENRY HARRIS LAKE of the Firm of Haseltine, Lake, & Co, Patent Agents,
Southampton Buildings London. "AN IMPROVED DEVICE FOR REGULATING
THE SPEED OF WARP-BEAMS IN LOOMS." [A communication from abroad by
Messieurs Tassigny frères et Compagnie, of Paris, France.]
This invention relates to an improved device for regulating the speed of the
warp-beam and for adjusting the tension of the warp thread in looms.
This device acting as a brake, whose power can be regulated at will, allows of a
weak thread being woven without breaking, and a fabric being thereby produced
regular in the woof or weft; it avoids the faults usually caused by the irregular
unrolling of the warp-beam and augments the yield of the machine.
In the accompanying Drawings.
Figure 1 represents the apparatus with a single spring of small size.
Figure 2 shews the same furnished with a supplementary spring, which gives
additional elasticity, and, consequently, occasions less breakage of the threads.
Figure 3 represents the apparatus so arranged that a larger spring can be used
between the ends of the two angle-pieces.
Figure 4 shews the same kind of apparatus as that shewn in Figure 1, but
provided with a spring arranged to be compressed instead of expanded by screwing
up the thumb-nut.
Figure 5 shews a modification of the same in which two parallel springs of
equal strength are used.

page_text: From these different modifications of the apparatus, one can be chosen, according
to the pressure required and the nature of the fabric.
a represents the surface of the warp-beam, around which is placed the hoop b.
This hoop 6 is formed of iron, steel or other metal, with one or more turns, covered
with india rubber gutta percha, plaited horse-hair, or other suitable material. Its
purpose is to give the necessary pressure upon the surface of the warp-beam to be
unrolled.
cc represent curved angle-pieces of cast iron, parts of which are hollowed out to
receive the second turn if the hoop is double.
The distance between the ends or projecting arms of these angle-pieces may be
more or less considerable. d, d represent the projecting arms of the angle pieces
c, c, the distance between which is greater or less according to the size of the
spring it is desired to employ.
e represents a spring arranged in connection with a screwed rod g regulated as
desired by the thumb-nut h. f represents a supplementary spring placed between
the upper angle-piece c and the thumb-nut h.
Figure 2 represents a screwed rod passing through the springs e and f.
represents the thumb-nut for giving the desired pressure to the springs e
and f.
represents a spring for regulating the pressure upon the warp-beam.
j represents a screwed rod placed below the spring i for adjusting the apparatus.
I represents a piece of iron bolted to the support 1 for regulating the width of
the fabric and carrying the screwed rod j.
The support is bolted to the frame-work of the loom and has a slot to receive
the piece k. A piece may be secured to the angle-piece c by means of which piece
greater space can be given between the projecting arms d, d of the angle-pieces
and the use of a longer spring facilitated.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Harris Lake in the Great Seal Patent Office on the
15th August 1882.
HENRY HARRIS LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED DEVICE FOR REGULATING
THE SPEED OF WARP-BEAMS IN LOOMS. A communication from abroad by
Messieurs Tassigny frères et Compagnie, of Paris, France.
This Invention relates to an improved device for regulating the speed of the
warp-beam, and for adjusting the tension of the warp threads in looms.
This device acting as a brake, whose power can be regulated at will, allows of a
weak thread being woven without breaking and a fabric being thereby produced
regular in the woof or weft; it avoids the faults usually caused by the irregular
unrolling of the warp-beam, and augments the yield of the machine.
In the accompanying Drawing,
Figure 1 represents the apparatus or device with a single spring of small size.
Figure 2 shews the same furnished with a supplementary spring which gives
additional elasticity, and consequently occasions less breakage of the threads.
Figure 3 represents the apparatus so arranged that a larger spring can be used
between the ends of the two angle-pieces.
Figure 4 shews the same kind of apparatus as that shown in Figure 1, but
provided with a spring arranged to be compressed instead of expanded by screwing
up the thumb-nut.
Figure 5 shews a modification of the same, in which two parallel springs of
equal strength are used.
Figure 6 represents two views of another modification.
Like letters indicate the same parts throughout the Drawing.
From these different modifications of the apparatus one can be chosen according
to the pressure required and the nature of the fabric.
a represents the surface of the warp-beam, around which is placed the hoop b.
This hoop 6 is formed of one or more turns of iron, steel, or other metal covered
with india-rubber, gutta percha, plaited horse hair, buffalo hide, or other suitable
material. Its purpose is to give the necessary pressure upon the surface of the
warp-beam to be unrolled. c, c, represent curved angle-pieces of cast iron, parts of
which are hollowed out to receive the second turn if the hoop is double. d, d,
represent the projecting arms of the angle pieces c, c, the distance between which
is greater or less, according to the size of the spring it is desired to employ.
e represents a spring arranged in connection with a screwed rod g regulated as
desired by the thumb-nut h. f represents a supplementary spring placed between
the upper angle-piece c and the thumb-nut h. g represents a screwed rod passing
through the spring e or through the springs e and f. h represents a thumb-nut for
giving the desired pressure to the springs c and f. i represents a spring for regu-
lating the pressure upon the warp-beam. ; represents a screwed rod placed below
the spring i for adjusting the apparatus. k represents a piece of iron bolted to the
support for regulating the width of the fabric, and carrying the screwed rod j.
The support is bolted to the framework of the loom, and has a slot to receive the
piece k. A piece m may be secured to the angle pieco c so that greater space can
be given between the projecting arms d, d, of the angle-pieces and the use of a
longer spring facilitated.
In the modification represented in Figure 6, springs are employed which act in
contrary directions and give more smoothness to the movements. The two larger

page_text: springs facilitate the movement in the unrolling of the warp-beam according to
requirements, in this manner the warp-thread does not receive any shock in working.
The two smaller springs hold the back-motion cord; two screw-nuts placed on the
front of the loom permit the weaver to regulate the tension of the draught and
back-motion cords.
To cause friction upon the plate I sometimes replace the angle pieces and the
steel band covered with buffalo hide or horse-hair in the preceding modifications,
by a cord of special manufacture, the expansion and contraction of which are
obviated by making it with a metallic core formed of one or more wires of brass,
steel, or iron, or of a light band of metal. This cord with the metallic core can be
round or flat according to the amount of friction it is desired to produce.
In the case of the employment, for causing the friction, of a band of any metal
covered or not with buffalo hide, the angle pieces may be dispensed with and the
band caused to pass like the cord upon flat rollers; the metal band or the cord may
also be replaced by chains.
With the above described system of springs and cords the unrolling takes place
regularly shoot by shoot, the springs alone acting and the cord only serving for the
friction; whilst the ordinary cords, (to which the springs may also be applied,)
always preserve, although stretched, a certain elasticity which causes jerks.
The cords heretofore have become greased by contact with the oil used upon the
loom, but with the present invention a little Venetian clay or analogous material
suffices to remedy these inconveniences and should the cord become greasy, the said
system of springs will always equilibriate the pressure. Two small rollers serve
to guide the cords and are placed according to the arrangement of the loom; they
are mounted upon sliding pieces which permit of regulating their position in any
direction.
In Figure 6 A is the warp beam, B the cord wound around the said beam, C the
roller receiving the draught cord, D the roller receiving the back-motion cord, E a
roller-carrier with a slide for permitting it to be raised or lowered according to the
arrangement of the loom, F a piece for supporting the roller-carrier and capable of
being moved from right to left and vice versa, G a support fixed to the frame of
the loom to receive the pieces E and F; H is a spring for facilitating the move-
ment of the draught, I a spring receiving the cord of the back-motion, J, J, thumb-
nuts serving to regulate the tension, and K the front part of the frame of the loom.
Having thus fully described the said Invention as communicated to me by my
foreign correspondents and the manner of performing the same I wish it understood
that I claim,
First. The improved device for regulating the speed of warp-beams in looms for
weaving, substantially as above described and various examples of which are
represented in the accompanying Drawing.
Second. The cord with metallic core combined with the springs for facilitating
the draught of the warp-beam in order to avoid all shock to the warp-threads
during the operation of the loom, substantially as set forth.
In witness whereof I the said Henry Harris Lake have hereunto set my
hand and seal this Fifteenth day of August in the year of our Lord One
thousand eight hundred and eighty two.