Improvements in or connected with Weavers' Beams.
Year: 1893

page_text: te of Application. 30th Aug., 1893--Accepted, 30th Sept., 1893
COMPLETE SPECIFICATION.
Improvements in or connected with Weavers' Beams.
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 Jean Baptiste Lamblin of
Marquette (Nord) in the Republic of France Manufacturer and in what manner
the same is to be performed to be particularly described and ascertained in and by
the following statement :-
This invention consists in improvements relating to the adjustment of the face
plates of weavers beams whereby the said plates may be easily and accurately
adjusted from the ends of the beam and caused to approach to or recede from each
other and to maintain the position of adjustment given to them against accidental
movement or pressure applied to the plates themselves.
In the annexed drawing
Fig. 1 is a longitudinal section of the beam and face plates, Fig. 1b is an end
view thereof.
Fig. 2 is a longitudinal section illustrating a modification of the adjusting
mechanism.
Fig. 3 is a longitudinal section and Fig. 4 a cross section on a larger scale of
another modified form or construction of the said mechanism.
A is the beam and P. P. the two face plates which slide on the beam with slight
friction. Fixed solidly with each plate is a block E traversing a slot C in the
beam A which is hollow and engaging with the threads of a screw threaded rod V
within the beam and parallel with the axis thereof. There may be one such rod V
excentric with regard to the axis of the beam as in Fig. 1, or concentric therewith
as in Fig. 2 in which latter case the block E may pass across the interior of the
beam and through two diametrically opposite slots C as shown in Fig. 2; there
may also be two such rods V. W. as shown in Fig. 3 engaging each with a separate
block E projecting from opposite slots C and severally fixed to the plate P. This
latter construction gives greater steadiness to the plate P keeping its plane perpen-
dicular to the axis of the beam.
The rod or rods may extend from one end of the beam to the other being
provided towards one end with a screw thread V₁ in one direction but towards the
other end with a screw thread V in the opposite direction. Where two rods are
used the screw threads WW" correspond in direction with the threads V₁ V"
respectively.
The rods terminate in square or other heads Q suitable for engagement of a key
for rotating the rods. Where two rods are used it is preferably to use a coupling
device consisting of the two pinions R' R" on the respective rods both engaging
with a spur wheel R common to both the latter wheel being provided with the
square or equivalent head Q.
The aforesaid device permits of the simultaneous and equal movement of both
face plates but in contrary direction; if however the plates are to be separately
adjustable the rods V are divided at the centre and consequently form two rods
placed end to end and severally adjustable from the respective ends of the beam.
Figure 5 illustrates a portion of the hollow beam A with holes A' for the
attachment of warp threads, nevertheless these holes may be dispensed with
by the use of a rod lying along the outside of the beam and secured down
thereon by screws thus serving as a longitudinal clamping bar between which
and the beam the ends of the warps may be securely pressed and fixed.
The beam is made of hollow tubular iron, the plates of cast iron in one piece
with flanges, but the invention is not confined to any particular materials.

page_text: Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed I declare that what
I claim is;
1. The combination of a weavers beam made hollow and having slots C therein
plates P adapted to slide thereon, block or blocks E and 1od or rods V W in
one or two parts adapted for adjustment of said plates substantially as set forth.
2. The combination with a warp beam having holes A¹ or a longitudinal rod
in place thereof as described, and sliding plates P on said beam of the means
herein described for relative adjustment of said plates.
Dated this 30th day of August 1893
R. HADDAN,
Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, Agent for Applicant.