Year: 1887

page_text: Date of Application, 27th May, 1887.
Specification Accepted, 22nd July, 1887.
The main object of any invention is to construct a rail chair whereby the rail will
be firmly retained without the use of bolts and nuts, and without the necessity of
forming bolt holes in the rails near the ends.
On the accompanying drawings
-
Fig. 1, represents a perspective view of my improved rail chair showing the parts
detached from each other.
Fig. 2, represents a sectional plan view, also showing the parts detached.
Fig. 3, represents a sectional plan view showing the parts fitted together, and a rail
in dotted lines.
Fig. 4, represents a transverse section on the line 1-2, Fig. 3, with the key shown
in elevation.
Fig. 5, represents a transverse section on the line 3-4, Fig. 3.
And Fig. 6, represents a transverse section showing the chair constructed for holding
a different form of rail from that shown in the other figures of the Drawings.
The chair is composed of opposite clamps A, A¹, each comprising a base plate, a,
and side web, b, for embracing the flange of the rail and bearing against the central
web of the same.
On each base plate are formed projecting tongues, d, which have bevelled faces, f,
so that in fitting the two parts of the chair together the tongues will interlock with
each other, and as the two parts of the chair are moved longitudinally in opposite
directions, the effect of the engagement of the interlocking bevelled tongues will be to
draw the two parts of the chair laterally towards each other, and thus securely clamp
and confine the rail or rails between the two parts of the chair.
Each part of the chair has at one end a lug, g, for receiving the blows of a hammer,
whereby it is driven longitudinally, and in the base of each chair is a recess, h, for the
reception of a tapered transverse key, B, which serves to complete the tightening of
the two parts of the chair, and to prevent the loosening of the same after it has been
tightened.

page_text: My improved chair may be used as a support for the rail at different points
throughout its length, or simply as a means of clamping the ends of adjoining rails
together, and if it is desired to prevent creeping of the rail or rails in the chair, recesses
may be formed by removing the corners of the rail flange at each end of a rail, as
shown in Fig. 3, lugs, i, on the clamp and key being adapted to these recesses, so as
to retain the rail longitudinally in the chair, or the openings, m, for the reception of
the spikes whereby the chair is secured to the cross tie or other support may be so
located as to necessitate the formation of nicks in the flanges of the rail for receiving
portions of the spikes. This nicking of the rail flanges is not considered advisable in
many cases, however, hence the openings, m, are shown as located outside the limits
of the rail flanges.
In order to strengthen the base plate, a, of each portion of the chair, 1 secure to the
underside of the same a plate, p, which also serves to prevent vertical displacement of
one portion of the chair independently of the other, and when the two parts of the
clamp are driven up into place, a confining plate, s, may be applied to these plates, p,
so as to serve as an additional retainer, a lug, t, being formed on the underside of the
key, B, for engagement with this plate, so that accidental loosening of the key is
effectually prevented.
In Fig. 6, I have shown the clamps internally shaped for adaptation to a double
headed rail, instead of to a rail with broad base flange, as shown in the other figures,
the clamps in other respects, however, being substantially similar to those previously
described.
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. The hereinbefore described improved rail chair, consisting of opposite clamps
having base plates with interlocking bevelled tongues and transverse recesses, and a
transverse tightening and retaining key adapted to said recesses, all substantially as
specified.
2. The hereinbefore described improved rail chair, consisting of opposite clamping
plates, having striking lugs at or near the ends, and base plates with interlocking
bevelled tongues, all substantially as specified.
3. The herein before described improved rail chair, consisting of opposite clamps
having base plates with interlocking bevelled tongues, and strengthening plates beneath
said base plates, all substantially as specified.
4. The combination of the opposite clamps, having base plates with interlocking
bevelled tongues, a transverse retaining key, nicked rails, and lugs on one of the
clamp plates and on the key, to engage with said nicked portions of the rails, all
substantially as hereinbefore specified.
5. The combination of the opposite clamps having base plates with interlocking
bevelled tongues, strengthening plates beneath said base plates, and a confining plate
surrounding said strengthening plates, all substantially as hereinbefore specified.
6. The combination of the opposite clamps having base plates with interlocking
bevelled tongues, strengthening plates beneath said base plates, a transverse tightening
key, with downward projecting lug, and a confining plate surrounding the strengthening
plates and bearing upon the lug of the tightening key, so as to retain the latter, all
substantially as hereinbefore specified.
Dated this 27th day of May 1887
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C.,
Agents for the Applicant.