Improvements in or connected with Railway Chairs.
Year: 1891

page_text: Date of Application, 14th Mar., 1901
Complete Specification Left, 2nd Nov., 1891-Accepted, 5th Dec., 1891
PROVISIONAL SPECIFICATION.
Improvements in or connected with Railway Chairs.
"
City of York,
1 T TH
Stone Mason, do hereby declare the nature of this invention to be as follows,
that is to say :-
I construct or form chairs and keys for holding the rails of railways when in
their positions for use, in such a manner that same are rigidly and firmly held
without the possibility of any of the parts becoming detached by the vibrations
of the rails etc.
This I attain by forming one of the chair's holding pieces detachable, its detach-
ment being effected by the removal of a metal wedge which fits between the onter
edge of its bed-piece and a projection formed on the chair's base plate.
To enable this wedge to keep this detachable holding piece in position an inclined
lug is formed on said holding piece to fit within an opening in the chair's base-plate
necessitating the withdrawal of same, when being detached, in one direction only,
the wedge when driven home preventing its movement in this said direction.
Dated this 13th day of March 1891.
THOMAS THORNTON.
Per Samuel Hey,
Agent.
COMPLETE SPECIFICATION.
Improvements in or connected with Railway Chairs.
I THOMAS THORNTON of Cowling near Keighley in the County of York,
Stone Mason 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, that is to say :-
I construct or form chairs and keys for holding the rails of railways in such a
manner that same are rigidly and firmly held when in their positions for use, and
that without the possibility of any of the parts becoming loose or detached by
the vibrations of the rails etc.
In order that my said invention may be more readily understood I have hereunto
appended sheets of drawings illustrative thereof, to which by figures and letters,
reference is made in the following description.
Figs. 1, 2, 3 and 4 are side, end, top and side sectional views respectively shewing
my improved chair and key applied to the old kind of rail and sleeper as at present
in use. Figs. 5 and 6 (the latter partly in section) are similar views to Figs. 1
and 3 but illustrate a slight modification in arrangement while Figs. 7, 8, 9, 10, 11
and 12 are detail drawings hereinafter referred to.
of the
Similar letters and figures refer to similar parts throughout the several views.
I attain the object of my invention by forming the holding-piece
chair detachable, its detachment being elected by the removal of the metal
wedge which slides or fits between the outer edge of the bed-piece d and the
projection e formed on the chair's base plate.
To enable the holding in position of the detachable holding-piece a, an inclined
lugg (see detail drawings Figs. 7, 8 and 9) is formed on said holding-piece a to fit
within an opening made in the chair's base-plate / said opening heing at an angle
to the horizontal surface of said base plate so that when the holding piece a

page_text: has to be detached it has to be moved in the direction of the incline, and by
the wedge being driven home the said holding-piece a is firmly held from moving
in this direction but is pressed against the rail h.
e so
The wedge has one of its sides (see detail drawings Figs. 10, 11 and 12)
formed, to fit beneath the overhanging edge of the base-plate's projection
that said wedge is thus prevented from rising vertically out of position, while to
further add to its security the pink may be inserted in an opening in the base
plate so as to prevent the displacement of the welge by any lateral movement.
A piece of wood / may be placed in the face of the holding-piece a (see Fig. 9)
to form a suitable surface for contact with the iron rail instead of the iron surface
of the part a being in contact therewith.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The formation or construction of a railway chair in several parts as herein
specified, said parts being arranged so that one shall fit another substantially as
set forth.
Dated this 31st day of Dotchas 1001
THOMAS THORNTON.
Per Samuel Hey.
Agent.