Improved Means or Device for Securing Rails in Railway Chairs.
Year: 1898

page_text: Date of Application, 12th Oct., 1898
Completo Sonnifination Loft 14th Jul, 1000 Accented
12th Aud 1800
PROVISIONAL SPECIFICATION.
Improved Means or Device for Securing Rails in Railway Chairs.
We, SAMUEL SIMS, of Dale Road, Spondon, in the County of Derby, Engineers'
Grinder, and WILLIAM JERRAM, of Church Hill, Spondon, in the County of
Derby aforesaid, Engineers' Driller, do hereby declare the nature of this inven-
tion to be as follows;-
-
The object of our invention is to dispense with the constant attention required
in the use of the ordinary railway chair and key due to the expansion and con-
traction of the metal caused by variation in the temperature.
In carrying out our invention we employ a chair of very much the ordinary
type carrying a loose piece or jaw preferably of cast metal with notches or
serrations thereon on the rail side, between this loose piece and the rail we place
a wooden key also notched or serrated to correspond with or engage the notches
or serrations on the loose piece, the rail side of the key being smooth; in fixing
the rail in the chair the loose piece is first fitted into the chair and the key is
driven home it being narrower at one end than the other, holes may be formed in
one or both ends of the loose piece for convenience in fixing the key in any
desired position by means of set screws. Any suitable means may be employed
if desired for preventing the loose piece separating from the key when the
latter has been wedged up, such as by forming a notch or projection on one
engaging a recess in the other. The loose piece being preferably formed of cast
metal may be broken when it is wished to detach the chair from the rail.
advantage of our invention is that it may be applied to existing chairs.
דדי
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One
COMPLETE SPECIFICATION.
Improved Means or Device for Securing Rails in Railway Chairs,
We, SAMUEL SIMs, of Dale Road, Spondon, in the County of Derby, Engineers'
Grinder, and WILLIAM JERRAM, of Church Hill, Spondon, in the County of
Derby aforesaid, Engineer's Driller, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement;-
-
The object of our invention is to dispense with the constant attention required
in the use of the ordinary railway chair and key due to the expansion and con-
traction of the metal caused by variation in the temperature.

page_text: In describing our invention reference will be had to the accompanying sheet
of drawings upon which Figure 1 is a cross section through a chair and rail
shewing the application of our invention.
Figure 2 is an elevation of the side face of the loose piece or jaw as will be
hereinafter explained.
Figure 3 is a plan of the loose piece or jaw, and wooden key looking down.
In carrying out our invention we employ a chair of very much
the ordinary type carrying a loose piece or jaw A
or jaw A preferably of
cast metal with notches
serrations
or
B thereon on the rail side,
between this loose piece and the rail C we place a wooden key D also
notched or serrated to correspond with or engage the notches or serrations on the
loose piece, the rail side of the key being smooth; in fixing the rail in the
chair E the loose piece is first fitted into the chair and the key is driven home
it being narrower at one end than the other, holes F may be formed in one or
both ends of the loose piece for convenience in fixing the key in any desired
position by means of set screws. Any suitable means may be employed if desired
for preventing the loose piece separating from the key when the latter has been
wedged up, such as by forming a notch or projection on one engaging a recess
in the other or the staples G may be driven down into the wooden key so as to
engage one or more of the notches or serrations in the loose piece or jaw as
shewn on Figures 1 and 3. The loose piece being preferably formed of cast
metal may be broken when it is wished to detach the chair from the rail or the
wooden key may be driven out. One advantage of our invention is that it may
be applied to existing chairs; the lugs or projections A' passing round each end
of the chair prevent any longitudinal play."
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. The improved means or device for securing rails in railway chairs con-
sisting of a loose notched or serrated piece or jaw engaging the chair on one
side, in combination with and engaging a correspondingly notched or serrated
key on the other side substantially as described and illustrated.
2. The improved means or device for securing rails in railway chairs consist-
ing of a loose notched or serrated piece or jaw engaging the chair on one side,
in combination with and engaging a correspondingly notched or serrated key on
the other side and means such as the staple G for further securing or ensuring
a perfectly tight connection of the rail to the chair substantially as described and
illustrated.