Chairs.
Year: 1886

page_text: Date of Application, 1st Sept., 1886.
Complete Left, 25th May, 1887.
Complete Accepted, 1st July, 1887.
WILL llway Chairs.
I, HERBERT JOHN HADDAN, of 67 Strand, in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to means for securing railway rails into their chairs, and
consists in the use of a shoe of peculiar shape which is held in place and rests on a
projecting shoulder or dog on the chair-The rail being finally fixed firmly by means
of a wooden wedge driven between the said shoe and the rail. The inner face of the
shoulder on the chair is inclined somewhat towards the rail, the other sides being so
inclined that the shoulder has the form of an inclined truncated pyramid-the shoe is
adapted to enclose the latter and its inner sides are tapered corresponding to the sides
of the shoulder. The side of the shoe facing the rail is inclined towards the latter
and a wooden wedge is driven between the shoe and the rail. The wedge not only
fixes the rail, but also forces the shoe downwards on the shoulder and fixes the whole
securely.
If desired the face of the shoe opposite to the rail may be formed of such a length
as to extend downwards beside the edge of the lower flange of the rail, the said
extended part being of sufficient thickness to substantially fill up the space between
the edge of the flange and the shoulder of the chair. With this construction, should
the wooden wedge become accidentally displaced, the rail will still be held sufficiently
securely in the chair.
To give greater strength the shoulder is preferably forged by a steam hammer or
otherwise, the shoe being cast in a mould. The two will therefore fit perfectly
together.
tambay 100€
H. J. HADDAN.
Pp. Herbert & Co.,
67, Strand, W.C.,
Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in or Connected with Railway Chairs.
I, HERBERT JOHN HADDAN, of the firm of Herbert & Co., Patent Agents, of
67 Strand, London, in the County of Middlesex, Civil Engineer, do hereby declare
the nature of this invention, a communication to me from abroad by Frederic Coblyn,
of Seraing in the Kingdom of Belgium, Engineer, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to the fixing of rails in railway chairs and is more especially
adapted for such rails as have broad foot flanges.
Referring to the accompanying drawings illustrating the invention Fig. 1 is a cross
section. Fig. 2 a section on line A. B. Fig. 1 and Fig. 3 a side elevation.
b is a shoulder fixed firmly in any convenient manner to or with regard to the
sleeper, the said shoulder is more or less rectangular and is inclined towards the rail.
d represents a claw, spike, or other convenient means in use for fixing one of the
flanges of the foot of the rail with regard to the sleeper in the usual manner-The
distance between the claw or equivalent d and the shoulder b is such that the rail can
be easily removed or replaced without moving the claw d.
The invention consists in combining with the shoulder b a shoe a of a form
substantially as shown, of which the plate or side nearest to the rail extends downward
over the shoulder b, the lower end c arriving between the edge of the flange of the
rail and said shoulder and substantially filling up the space between the two. By this
means, should the wooden key be displaced, the rail would be retained with the Hange
under the claw d. The face of the shoe opposite to the rail is inclined above towards
the latter, but the inclination of said face is preferably not so great as that of the
corresponding face of the shoulder b. When therefore the wooden or other key is
inserted or in position, the shoe cannot be lifted from the shoulder. The shoe may
conveniently be made of cast iron, the shoulder b of wrought iron.
The parts made of rolled iron are shaded as a¹ in section; wrought iron, as in b
and cast iron as in c¹.
Having now particularly described and ascertained the nature of said invention,
and in what manner the same is to be performed, I declare that what I claim is: :-
1. The combination of shoulder b with shoe a substantially as set forth.
2. The combination of shoulder 6 and claw or equivalent d with shoe a having the
part c substantially as and for the purpose set forth.
Dated this 25th day of May 1887.