An Improved Brake for Warp-beams of Looms.
Year: 1894

page_text: Date of Application, 13th Aug., 1894
Complete Specification Left, 3rd Sept., 1894-Accepted, 6th Oct., 1894
PROVISIONAL SPECIFICATION.
An Improved Brake for Warp-beams of Looms.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., Patent Agents,
of 18 Buckingham Street, Strand, W.C., London, Civil Engineer, do hereby declare
the nature of this invention a communication to me from abroad by Anton
Biedermann, Manufacturer, of Augsburg in the Empire of Germany to be as
follows:-
Heretofore warp beams have usually been provided with chains or ropes wound
about them and drawn taut by a lever with a shifting weight or by direct weights
to afford the necessary brake power. The object of the present invention is to
overcome the disadvantages of inequalities in pressure and unevenness in braking
with such mechanism due to want of continuity in the braking surface afforded by
a chain or rope and alterations in tension under movements of the warp beam.
For this purpose I provide a brake consisting of several different materials in
any suitable order within an enclosing strap or device as follows; the strap is made
in two U shaped parts hinged together and connected by any suitable fastener to
form an outer casing of oval shape. Within this strap or casing are placed two
rigid blocks and within the latter two elastic blocks for instance of rubber and
within the latter two further frictional brake blocks for instance of wood. These
blocks are preferably semi-cylindrical or semi-annular pieces and they surround the
warp beam, the innermost blocks being in contact therewith. Two screws are
provided in the casing one above and one below to regulate the pressure. These
screws may be made so that they can only be turned by a special key to prevent
accidental malicious or unskilful variation of the adjustment.
The rigid blocks distribute the pressure evenly, while the wooden inner blocks
provide a surface of substantially constant braking resistance. The rubber blocks
give a resilient pressure and deaden the action of the jolting of the loom on
the brake.
I do not however confine myself to any particular number of brake blocks or
layers of diverse materials or to any particular sequence of such materials.
Dated this 13th day of August 1894.
COMPLETE SPECIFICATION.
An Improved Brake for Warp-beams of Looms.
I REGINALD HADDAN of the Firm of Herbert Haddan & Co. of
18 Buckingham Street, Strand, W.C. London, Patent Agent, do hereby declare
the nature of this invention, a communication to me from abroad by Anton
Biedermann, Manufacturer of Augsburg in the Empire of Germany and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
Heretofore warp beams have usually been provided with chains or ropes wound
about them and drawn taught by a lever with a shifting weight or by direct
weights to afford the necessary brake power. The object of the present invention
is to overcome the disadvantages of inequalities in pressure and unevenness in
braking with such mechanism due to want of continuity in the braking surface
LTX

page_text: afforded by a chain or rope and alterations in tension under movements of the warp
beam.
For this purpose I provide a brake consisting of several different materials in
any suitable order within an enclosing strap or device as follows, reference being
made to the annexed drawing in which Fig. 1 is an elevation and Fig. 2 a detail
view of a modification of the improved brake.
The strap B is made in two U shaped parts hinged together at one side and
connected to any suitable fastener K as in Figs. 1 and 2 to form an outer casing
of oval shape. The device K permits the brake to be opened and closed without
disturbance of the degree of pressure it exerts. Within this strap or casing are
placed two rigid blocks S, S, which are preferably of iron or steel and within the
latter two clastic blocks G G for instance of rubber and within the latter two
further frictional brake blocks H H for instance of wood. These blocks are
preferably semi-cylindrical or semi-annular pieces, and they surround the warp
beam W, there being any desired number of said blocks, so that the innermost
blocks are in contact with the beam. Two screws S¹, S³, are provided in the
casing, one above and one below to regulate the pressure. These screws may be
made so that they can only be turned by a special key to prevent accidental
malicious, or unskilful variation of the adjustment.
The rigid blocks S, S, distribute the pressure evenly while the wooden inner
blocks H H provide a surface of substantially constant braking resistance. The
rubber blocks G G give a resilient pressure and deaden the action on the brake of
the jolting of the loom.
I do not however coufine myself to any particular number of brake blocks or
number of layers of diverse materials or to any particular materials or sequence of
such materials.
.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
An improved brake for warp beams of looms, comprising the box or bearing B
in two parts connected together and carrying adjusting screws S1, S2, and
superposed crescent shaped blocks between said screws and the warp beam, said
blocks being made of diverse materials to obtain a smooth, resilient, frictional
pressure in the warp beam substantially as and for the purpose set forth.
Dated this 3rd day of September 1894.
R. HADDAN.