Improvements in Metallic Posts for Railways.
Year: 1894

page_text: Date of Application, 19th June, 1894
Complete Specification Left, 19th Mar., 1895-Accepted, 20th Apr., 1895
Date of Application, 19th June, 1094
Complete Specification Left, 19th Mar., 1895-Accepted, 20th Apr., 1895
PROVISIONAL SPECIFICATION.
Improvements in Metallic Posts for Railways.
I CHARLES DUTTON of Marl Bank in the City of Worcester, Engineer do
hereby declare the nature of this invention to be as follows
:-
It is the usual custom to build up the angles of signal posts according to their
heights and superstructure with two or more angle irons, one inside the other, and
a square, solid bar inside the innermost, rivetting and cramping together these
several parts.
Now my invention has for its object the abolition of so many parts and the labour
and expense incurred in putting them together by making the angle in one solid
section and of such special form suitable for the weight and strength of the post
required, and also provides a rebate from which the lattice bars spring and are
rivetted to on the flat.
I so arrange the position of the lattice bars that on one side they cross each other
opposite the diamond spaces on the other side, thereby exhibiting increased area for
observation.
The widening of the angle members for the purpose of producing the rebate
previously referred to also adds to the area, altogether producing a considerably
increased surface to the view than is usual in lattice signal posts, at the same time
affording increased strength with less weight of material.
Dated this 18th day of June 1894.
CHARLES DUTTON,
Marl Bank, Worcester.
I, CHARLES DUTTON of Marl Bank in the City and County of Worcester,
Engineer 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 :-
It is the usual custom to build up the angles of signal posts according to their
heights & superstructure, with two or more angle irons one inside the other, and a
square solid bar inside the innermost, rivetting and cramping together these several
parts. Now my invention has for its object the abolition of so many parts and the
labour & expense incurred in putting them together by making the angle iron in
one solid section and of such special form suitable for the weight and strength of
the post required and also provides a rebate from which the lattice bars spring &
are rivetted to on the flat. 1 so arrange the position of the lattice bars, that on
one side they cross each other opposite the diamond space on the other side, thereby
exhibiting increased area for observation.
The widening of the angle members for the purpose of producing the rebate
previously referred to also adds to the superficial area, altogether producing a
considerably increased surface to the view than is usual in lattice signal posts
at the same time affording increased strength with less weight of material.

page_text: Figure 1 is a front elevation of a signal post in three lengths spliced at "CC"
and with latticing partly removed. The base may be rivetted to wrought iron
plates as shewn at D" or fixed in the usual inanner to a casting as shewn
at. "E."
Figures 2, 3, and 4, are sections of the angle iron used in the corners of the post,
and are drawn to an enlarged scale. Each takes the place of two or more angle
irons and a square bar which are usually built up and rivetted or strapped together
to form the corners of the post. The flanges of the angle iron are thin to suit the
rivetting and the corners are strengthened more or less to suit the strain at
different parts of the post. The angle iron thus presents a broader side than is
usual on the face of the post.
Figures 5 and 6 are enlarged views of the lattice bars and joint plates. The
lattice bars are made to intersect so that the back bars are seen between the front
making the post look more solid and conspicuous. The joint plates may be either
rivetted or bolted to the angle irons.
Having now particularly described and ascertained the nature of my said inven-
tion and the way in which I propose to carry it into effect, I wish it to be understood
that I claim
1st. Angle irons for signal posts with thin flanges for rivetting the bracing and a
thick or enlarged root for strength as shewn in Figures 2. 3. 4.
2nd. The use of a solid rolled iron in the form shewn in Figures 2.3 and 4 in
lieu of built up angle irons and bars for the purpose of increasing the strength and
enlarging the surface of the post substantially as herein before described.
Dated this 18th day of March 1895.
CHARLES DUTTON.