Improvements in Railway Chairs and Keys.
Year: 1896

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c., Act, 1883), as required by
the decision of the Comptroller General of the 27th day of April 1898.
Date of Application, 29th Dec., 1896
Complete Specification Left, 29th Sept., 1897-Accepted, 6th Nov., 1897
PROVISIONAL SPECIFICATION.
Improvements in Railway Chairs and Keys.
We, JOHN MCMURRICH MCINTOSH, of Oakbank, Bowling, in the County of
Dumbarton, North Britain, Ships' Draughtsman, and JOHN Ross, of Coveen,
Newlands, Langside, in the County of Renfrew, North Britain, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
This Invention, which relates to railway chairs and keys, has for its object
to permit of readily lifting and replacing the rails whilst ensuring great stability
of the permanent way.
The improved chair is composed of the ordinary base piece by which it is
secured to the sleeper, but instead of the usual pair of cheeks between which the
rail is secured by a wedge, it is provided with only one complete cheek or jaw
piece of the ordinary form against which is placed the web of the rail.
In place of the second cheek or jaw there is formed on the chair a bulbous
projection of approximately semi-cylindrical or, convex contour, which constitutes
a pivot centre for the key which is formed with a concavity. to fit said centre, and a
second concave part to fit the lower flange of the rail whilst its upper vertical face
fits closely against the web of the rail, whose lower edge rests solid on the base of
the chair.
In placing the rail into position in the chair or series of chairs, the keys are
thrown back or rest on their pivot centres on the chairs, the rail placed in
position and its web against the jaw of the chair but not resting on its base and
the concave position of each key against the lower flange of the rail, which is
then depressed into its resting position on the chair, the key turning during
the downward movement of the rail until its vertical face bears firmly against
the web of the rail on one side whilst the web also bears closely against the
vertical face of the jaw on the opposite side and the upper flange of the rail
bears on the upper edge of the key and locks it.
Dated this 28th day of December 1896.
BOTTOMLEY & LIDDLE,
145, St. Vincent Street, Glasgow, Applicant's Patent Agents.

page_text: Newlands, Langside, in the County of Renfrew, North Britain, Manufacturer,
do hereby declare the nature of this invention and in wliat manner the same is
to be performed to be particularly described and ascertained in and by the
following statement:-
Our Invention, which relates to railway chairs and keys, has for its object
to permit of readily lifting and replacing the rails whilst ensuring great stability
of the permanent way..
In order that our Invention may be properly understood we have hereunto
appended a sheet of drawings of which Figure 1 is a view partly in section and
partly in elevation of a railway chair constructed in accordance with our im-
provements and shewing rail in position, and Figure 2 is an end view of part
of the chair and key in direction of arrows."
1
The improved chair, which may be made of iron, steel; wood, compressed paper,
or other suitable material, is composed of the ordinary base piece A by which it
is secured to the sleeper, but instead of the usual pair of cheeks between which
the rail is secured by a wedge, it is provided with only one complete cheek or
jaw piece B of the ordinary form against which is placed one side C¹ of the
web C of the rail E.
In place of the second cheek or jaw there is formed on the chair a bulbous
projection, of approximately semi-cylindrical or convex contour and with a
recess H which constitutes a pivot centre for the key G which is formed with a
concavity I to fit said centre, and a curved part J to fit or rest on the lower flange K
of the rail whilst its upper vertical face fits closely against the web of the rail E,
whose lower edge rests solid on the base A of the chair.
In placing the rail E into position in the chair or series of chairs, the rail E
is placed in the usual way in the chairs or series of chairs viz. with the web C
against the jaw B of the chair and the lower flange of the rail K resting on
the base A. The concavity I of the key G is placed on the pivot centre H and
turned downwards until its vertical face bears firmly against the web C of the
rail E on the side C, whilst the web also bears closely against the vertical face
of the jaw B on the opposite side C and the upper flange K¹ of the rail bears
on the upper edge of the key and locks it.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be. performed, we are aware that it
has been previously proposed to construct railway chairs with a fixed jaw and a
loose jaw. which rocks or turns on a horn or ridge and we do not claim, this.as our
Invention, but we declare that what we claim is:
Railway, chairs and keys constructed substantially as and for the purposes
herein before described and illustrated on the accompanying sheet of drawings.
Dated this 28th day of September 1897.
BOTTOMLEY & LIDDLE
DOTCOMLEY & LIDDLE
154, St. Vincent Street, Glasgow, Applicant's Patent Agents.