Improvements in Railway Chairs and in Fixing the Rails therein.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Railway Chairs and in Fixing the Rails therein.
I, ARTHUR TUCK, of 13, Railway Terrace, Station Road, New Southgate,
Signalman, do hereby declare the nature of this invention to be as follows:
-
This invention relates to an improved form or construction of railway chairs
having for object to securely fix the rails therein without having recourse to the
usual wooden blocks or metal keys used for this purpose.
According to my invention I construct my improved railway chairs of cast iron
or other suitable metal and of approximately the same form commonly used in
such chairs.
One of the jaws of the said chair is suitably formed to engage with one side of
the rail, the central web of the latter bearing flush against the vertical face of the
said jaw whilst its lower flange or foot engages with a recess in the lower part of
the jaw.
The other side of the rail is supported by a similarly shaped jaw, engaging
therewith, but this jaw is removeable whilst the first named one is fixed.
The base of the said moveable jaw is formed so as to engage with or slide into
a recess formed in the base of the chair, two sides of which recess are preferably
of dovetail shape for holding the base of the jaw firmly in position.
The moveable jaw is also provided with a central hole which coincides, when
the jaw is in position, with a hole in the base of the chair, and through these holes
is passed a tapering bolt formed at its upper portion with a wedge shaped or taper-
ing block which bears against an inclined face or surface formed on the back of
the said jaw. Thus upon hammering down the said bolt it is wedged tightly
against the loose jaw fixing the latter in position against the rail.
The loose jaw can be removed or placed in position by sliding it in the direc-
tion of the rail out of or into engagement with the recess in the base of the chair,
Dated 1 041 do of Antalian 1907
GEO. H. RAYNER,
37, Chancery Lane, London,
Agent for the Applicant.
Improvements in Railway Chairs and in Fixing the Rails therein.
I, ARTHUR TUCK, of 13, Railway Terrace, Station Road, New Southgate,
in the County of Middlesex, Signalman, do hereby declare the nature of this
[Price 8d.]

page_text: invention 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 an improved form or construction of railway chairs
having for its object to securely fix and retain the rail therein without having
recourse to the usual wooden blocks or metal keys used for this purpose.
According to my invention I construct my improved railway chair of cast iron
or other suitable metal and of approximately the same form commonly used in
such chairs.
One of the jaws of the said chair is suitably formed to engage with one side of
the rail, the central web of the latter bearing flush against the vertical face of the
said jaw whilst its lower flange or foot engages with a recess in the lower part of
the jaw. The other side of the rail is supported by a similarly shaped jaw engag-
ing therewith, but this jaw is removeable whilst the first named one is fixed.
The base of the said removeable jaw is formed so as to engage with or slide into
a recess formed in the base of the chair two sides of which recess are preferably
of dovetail shape for holding the base of the jaw firmly in position. The moveable
jaw is also provided with a central hole which coincides when the jaw is in position
with a hole in the base of the chair and through these holes is passed a tapering
bolt, the holes being suitably shaped to engage therewith, such bolt being formed
at its upper portion with a wedge shaped or tapering block which bears against
an inclined face or surface formed on the back of the said jaw. Thus upon placing
the rail in position and hammering down the said bolt it is wedged tightly against
the removeable jaw holding the latter firmly in position against the rail. The
loose jaw can be removed or placed in position by sliding it in the direction of
the rail out of or into engagement with the recess in the base of the chair.
When required the vertical face of the fixed jaw recedes from its base whilst
that of the removeable jaw protrudes so as to give the usual lip to the rail, the
base of the chair being shaped to engage with its flange or foot.
In order that my invention may be easily understood and readily carried into
practice I will proceed to further describe the same with reference to the accom-
panying sheet of drawings.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a side elevation of my improved railway chair.
Fig. 2 is a plan of the same.
Fig. 3 is a side elevation of my removeable jaw.
Fig. 4 is a plan of the same.
Fig. 5 is a view of the tapering pin and wedge.
Referring to Fig. 1 and 2 of the drawings.
a is the fixed jaw, a¹ indicates the recess for receiving the lower flange or foot
of the rail.
b is the removeable jaw, c the base of the said jaw engaging with the recess c¹,
and formed in the base of the said chair.
d is the central hole which coincides when in position with the hole e in the
base of the said chair.
f is the tapering bolt with the wedge shape or tapering block 7 which bears
against the inclined face or surface h formed on the back of the said moveable
jaw.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is:-
1. An improved railway chair for more securely fastning and retaining the
rail in position without having recourse to the usual wooden blocks or metal keys
substantially as and for the purpose hereinbefore set forth.
2. I claim the use and application of the removable jaw such jaw engaging

page_text: with the recess in the base of the chair substantially as and for the purpose
hereinbefore described.
3. I claim the use and application of the said removeable jaw 6 in combination
with c¹ and d, e, f, g and h acting in conjunction with the jaw a substantially
in the manner and for the purpose herein before described and illustrated in the
drawings hereunto annexed.