Improvements in or in connection with Railway Chairs.
Year: 1892

page_text: Date of Application, 26th July, 1892
Complete Specification Left. 25th Apr., 1893-Accepted, 27th May,
1893
PROVISIONAL SPECIFICATION.
Improvements in or in connection with Railway Chairs.
We ALFRED LEADBEATER and TOM LEADBEATER, both of Dorrington Road
Leeds in the County of York Mechanical Engineers, do hereby declare the nature
of this invention to be as follows: 11
An improved railway chair constructed in accordance with our invention is formed
with a sole piece and two side pieces or cheeks between which latter the rail is to
be secured. The side of the inner cheek adjoining the inner rail is formed as
closely as possible to fit the contour of the side of the rail.
The outer check is formed with the side facing toward the rail as an inclined
surface having an inclination of about 40 degrees to 25 degrees to the vertical.
Between this inclined surface and the outer side of the rail is fitted a block so
formed that one side bears upon the inclined surface and the opposite side against
the outer side of the rail. The upper longitudinal edge or corner of this block
(close beneath the head of the rail) is cut away to receive a tightening key, which
is formed so as to fit with the top and one side close to the rail at the under side of
the head and the top of the web and with the bottom and an inclined side against
the two sides of the keyway in the block.
As the key is formed taper along two sides (i.e. both in breadth and depth and
the keyway to suit, the rail is wedged not only sideways to the chair, but also
vertically, that is it cannot rise or fall in the chair.
To prevent the tightening up of the wedge forcing the block upward on the
inclined face of the outer cheek and thus loosening the connection we provide a
slightly projecting strip or lug on the inclined face of the cheek and a corre-
sponding recess on the adjoining face of the block, or vice versa.
For chairs for joints we make the sole plates and cheeks of double width and
other parts to correspond, the main difference being that we provide also a taper
keyway at the top inner corner of the inner cheek, in which we fit a second key,
also formed to fit close to the contour of the under side of the rail head where it
runs into the web.
If found desirable we propose to dovetail a piece of wood into the face of the
block next to the rail web, the wood projecting slightly.
One of the objects aimed at in this construction of rail chair is to carry part of
the load on the underside of the rail head and from the web, and in the case of rail
joints the adjoining ends of two rails cannot move with respect to each other as the
wheel passes from the one to the other.
Dated this 25th day of July 1892.
J. CLARK JEFFERSON,
2, East Parade, Leeds, Agent for aforesaid two Applicants.
COMPLETE SPECIFICATION.
Improvements in or in connection with Railway Chairs.
We ALFRED LEADBEATER and TOM LEADBEATER both of Dorrington Road
Leeds in the County of York Mechanical Engineers 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 :-
An improved railway chair constructed in accordance with our invention, is

page_text: formed with a sole piece and two side pieces or cheeks, between which latter the
rail is to be secured. The side of the inner cheek adjoining the rail is formed to
fit as closely as possible the contour of the side of the rail.
The outer cheek is formed, with the side facing toward the rail, as an inclined
surface, having an inclination of about 40 to 25 degrees to the vertical. Between
this inclined surface and the outer side of the rail is fitted a block, so formed, that
one side hears upon the inclined surface and the opposite side against the outer side
of the rail. The upper longitudinal edge or corner of this block, (close beneath
the head of the rail), is cut away to receive a tightening key; which is formed so
as to fit with the top and one side close to the rail at the underside of the head and
the top of the web; and with the bottom and an inclined side against the two sides
of the keyway in the block.
As the key is formed taper along two sides, (i.e. both in breadth and depth), and
the keyway to suit, the rail is wedged not only sideways but also vertically, that is,
it cannot rise or fall in the chair.
To prevent the tightening up of the wedge forcing the block upward on the
inclined face of the outer cheek and thus loosening the connection, we provide a
slightly projecting strip or lug on the inclined face of the outer cheek, and a
corresponding recess on the adjoining face of the block.
For joint chairs, we make the sole plates and cheeks of double width, and other
parts to correspond; the main difference being, that we provide also a taper keyway
at the top inner corner of the inner cheek, in which we fit a second key also formed
to fit close to the contour of the underside of the rail head, where it runs into
the web.
If found desirable we propose to dovetail a piece of wood into the face of the
block and next to the rail web, the wood projecting slightly.
One of the objects aimed at in this construction of rail chair is to carry part of
the load from the underside of the rail head and from the web; and in the case of
rail joints to prevent any movement of the adjoining ends with respect to each
other as the wheel passes from the one to the other.
And in order that our invention and the manner in which the same is to be
performed may be more readily understood, reference is given to the accompanying
drawings and to the letters and marks thereon.
Fig. 1 is a cross section and Fig. 2 a plan of a railway chair constructed in
accordance with our invention.
a is the body of the chair.
bis the wedge shaped block.
c is the projecting strip cast on the inner inclined face of the outer cheek, and
which fits into a corresponding recess cast in the block b. The lower edge of this
strip is formed vertical, to facilitate the insertion and removal of the block b.
dis the key for tightening up the rail.
e is the recess formed in the top inner corner of the block 6 to receive the key d.
Fig. 3 is a cross section and Fig. 4 a plan of a chair for railway joints. The
same reference letters are used as in Figs. 1 and 2 to indicate the same or
corresponding parts.
is the second key on the inner side of the rail.
In the case of chairs for railway joints, the wedges d and are made taper in
opposite directions, the better to preserve the parallelism of the rails.
g is the recess cast in the inner cheek of the chair to receive the key f.
It will be evident that in our invention, the rail is carried partly by suspension
from the under sides of the head, where these run into the web; and partly by
wedging the web; and that if the cheeks are sufficiently high the under side of
the rail may have no bearing whatever on the chair, so that no damage is done to
the tread of the lower head of a double headed rail. In this manner, the
disadvantage which at present prevents double headed rails being reversed, when
one head becomes too much worn, is obviated.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1st. A railway chair having the rail side of the inner cheek formed to suit the
contour of the rail, and the rail side of the outer check formed inclined and
provided with a projecting strip, the space between the outer check and the rail
being filled by a wedge shaped block having a recess corresponding to said strip
and a recess to receive a fastening key close to the underside of the rail head.
2nd. A railway chair comprising a chair casting a with a projecting strip c on the
inner inclined side of the outer cheek, a wedge shaped block b with a recess for
the strip c and a tapered recess for the fastening key d, and the taper key d fitting
the said recess and the underside of the rail head, substantially as herein set forth
and illustrated in the accompanying drawings.
3rd. A chair for rail joints substantially as herein described and claimed in
Claims 1st and 2nd and having a second fastening key in the top of the inner
cheek close to the underside of the rail head.
4th. A railway chair substantially as herein described and illustrated in the
accompanying drawings.
Dated this 19th day of April 1893.
J. CLARK JEFFERSON,
2, East Parade, Leeds, Agent for Applicants.