IMPROVEMENTS IN RAILWAY CHAIRS
Year: 1884

page_text: PROVISIONAL SPECIFICATION,
We FRANCIS KEELING, Deputy Underviewer, and ROBERT RIGLEY, Engine
Driver, both of Bulwell, Nottingham, Nottinghamshire, do hereby declare the.
nature of the said Invention for “IMPROVEMENTS IN RAILWAY CHAIRS," to bo as.
follows that is to say :-
This Invention has for its object the improvement of chairs used for holding the
rails on railways.
In carrying out the Invention the improved chair is formed in two parts one
part having a base or sole plate like existing chairs, for being secured to the sleeper
and this base or sole plate has a vertical part which is formed to coincide with the
section of the lower half of the rail which it is intended to hold as in existing
chairs. Instead of there being two vertical parts or jaws on the base or sole plate:
one on each side of the rail as in the present chair (in which the rail is secured by a
wooden wedge) there is only one the second vertical part for grasping or holding
the rail being formed in a separate piece which is fitted to slide in a recessed part
having shaped edges, in the base or sole part. When it is wished to secure the
rail in position the rail is placed with its side against the vertical part on the sole
plate and the separate piece having the second vertical part (which part coincides
to the section of the rail) is then placed alongside the rail and driven in the,
recessed part which is formed at a slight angle on the sole plate thus firmly
grasping the rail. The sliding vertical jaw piece and the sole plate are fastened
together by a pin or pins. As the space between the vertical holders exactly
corresponds (or nearly so) to the section of half the vertical height of the rail when.
the second piece is passed in to its place alongside the rail on the sole plate the rail
is securely held without any wooden wedges being required. By this Invention
several important advantages are gained, such as for example the following. By
dispensing with the wooden wedges at present commonly in use for securing the
rail in the chair, and using only metal, the rail is permanently fastened. and is not
Bo liable to work loose by vibration or atmospheric changes as it is when wooden
wedges are used. Again when it is necessary to renew a chair or sleeper, a less
amount of soil will be required to be moved than at present to admit of the
sleeper and chair being passed under the rail for removal by reason of their being
only one vertical part or chair on one side of the rail the second one being readily.
removable from the other side of the rail out of its angular recess in the sole
plate. And a further advantage is that in the event of any damage occurring to
the chair either of the two parts of the chair can readily be replaced by a new one.
:
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page_text: COMPLETE SPECIFICATION.
Wo FRANCIS KEELING, Deputy Undorviewer, and ROBERT RIGLEY, Engine
Driver, both of Bulwell in the Town and County of the Town of Nottingham
do hereby declare the nature of our invention for IMPROVEMENTS IN RAILWAY
CHAIRS, AND THE MEANS OR APPARATUS FOR SECURING THE RAILS THERETO and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This Invention has for its object the improvement of chairs used for holding the
rails on railways.
In carrying out the Invention. the improved chair is formed in two parts, one
part having a base or sole plate like existing chairs for being secured to the
sleepers, and this base or solo plate has a vertical part which is formed to coincide
with the section of the lower half of the rail which it is intended to hold as in
existing chairs. Instead of there being two vertical parts or jaws on the base or
sole plate one on each side of the rail as in the present chair (in which the rail is
secured by a wooden wedge) there is only one the second vertical part for grasping
or holding the rail being formed in a separate piece, which is fitted to a slide in a
recessed part having < shaped edges, in the baso or sole part. When it is wished
to secure the rail in position the rail is placed with its side against the vertical part
on the sole plate and the separate piece having the second vertical part (which part
coincides to the section of the rail) is then placed alongside the rail and driven in
the recessed part which is formed at a slight angle on the sole plate, thus firmly.
grasping the rail.
The sliding vertical jaw piece and the solo plate are fastened together by a pin
or pins. As the space between the vertical holders exactly corresponds (or nearly,
BO) to the section of half the vertical height of the rail when the second piece is
passed into its place alongside the rail on the sole plate the rail is securely held
without any wooden wedges being required.
By this Invention several important advantages are gained, such as for example
the following.
L
By dispensing with the wooden wedges, at present commonly in use for securing
the rail in the chair and using only metal the rail is permanently fastened, and is
not so liable to work. loose by vibration, or atmospheric changes as it is when
wooden wedges are used. Again when it is neccessary to renew a chair or sleeper
a less amount of soil will be required to be removed than at present to admit of
the sleeper and chair being passed, under the rail for removal by reason of their
being only one vertical part or jaw on one side of the rail, the second one being
readily removable, from the other side of the rail out of its angular recess in the
sole plate. And a further advantage is that in the event of any damage occurring
to the chair either of the two parts of the chair, can readily .be replaced... by a
new one.
And in order that our invention may be more completely understood, reference is
given to the accompanying drawings and to the letters, and marks thereon,

page_text: DESCRIPTION OF DRAWINGS.
Fig 1. is a ground plan, and fig. 2 is a plan of a Railway chair, constructed in
accordance with our Improvements. Fig. 3 is a sliding jaw piece, and Fig 4 is a
plan shewing our Improvents, when applied to a Railway chair instead of fish
plates, bolts, and wooden wedges.
a. is the rail which may be of any ordinary construction or section. b is the
chair which is formed on one side as an ordinary chair to receive and fit the rail a.
The opposite side of the chair is a sliding jaw piece c, which slides in a recess
part, having shaped edges, in the base of the sole part d. e is a pin of ordinary
construction, passing through c and d, when driven into the sloeper will prevent
the sliding jaw piece c from becoming loose either by atmospheric changes, or
rolling stock.
Having now particularly described & ascertained the nature of our said
invention and in what manner the same is to be performed, we would have it
understood that we do not limit ourselves to the precise details and configuration
of the parts we have described, and shewn as the same may be varied or modified
without departing from the nature of our said Invention, but what we do claim is
The arrangement, construction, and application of the chair b, and also the sliding
jaw piece c, and the recess part having shaped edges d, for securing the rail a to
the chair b, substantially as herein set forth.