An Improvement in Metallic Sleepers and Chairs for Railway Rails.
Year: 1887

page_text: Date of Application, 5th Mar., 1887.
Specification Accepted, 5th Apr., 1887.
COMPLETE SPECIFICATION.
An Improvement in Metallic Sleepers and Chairs for Railway Rails.
I, JAMES LIVESEY, of No. 2 Victoria Mansions, Westminster in the County of
Middlesex Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described a
and by the following statement:-`
My invention relates to a construction of metallic sleepers and chairs for railway
rails as I will describe referring to the accompanying drawings. Figs. 1 and 2
represent respectively a longitudinal section and a plan of a transverse metallic
sleeper with clip chairs according to my invention. One form of chair is shewn on
the left of these figures and a longitudinal section of this chair with transverse section
of the sleeper is shewn to an enlarged scale by Fig. 3. A modified form of chair is
shewn on the right of Figs. 1 and 2 and its longitudinal section with a transverse
section of the sleeper is shewn to an enlarged scale by Fig. 4. When the sleepers,
instead of being transverse as in Figs. 1 and 2, are of the bowl kind, similar chairs
are used as shewn in the transverse section Fig. 5, the plan Fig. 6 and the longitudinal
section Fig. 7. In all these figures the chair is shewn to consist of a length of plate
which is partly punched or cut through so as to present tongues of the metal which
are bent upwards and inwards to form clips engaging the flanges of the rail. The
inner faces of the clips are made with serrations S transverse to the line of rails 30
that when a key K, correspondingly serrated on its back, is driven between one of the
clips and the rail flange, the clip, being somewhat elastic, yields sufficiently to let
the prominences of the key pass those of the clip, and when the key is fully driven, the
engagement of its serrations with those of the clip prevent it from being loosened or
shaken out. The serrations $ of the clip may be formed, as shewn in Figs. 3 and 7.
during the process of stamping or pressing the clip to shape. Or the plate M from
which the chair is formed may be rolled with corrugations as shewn in Fig. 4 and on
the right of Figs. 1 and 2, these corrugations presenting themselves on the inner face
of the clip when it is punched up. When this construction is adopted, the upper face
of the sleeper is made with a depression D deep enough to receive the corrugations of
the chair. When the chair plate is fixed on the face of a bowl sleeper as shewn in
Figs. 5, 6 and 7, I prefer to form on the upper face of the sleeper prominences R of
D

page_text: height equivalent to the thickness of the chair plate, so that the rail rests on them as
well as on the chair plate.
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 construction and use of a clip chair for a railway rail, made by punching up
and bending over tongues of a plate to form clips, these clips being internally.serrated
to receive serrated keys, substantially as and for the purposes set forth.
2. Forming the internally serrated clips above referred to by punching up tongues
of a serrated plate, substantially as described.
3. Recessing the upper face of a metallic sleeper to receive the corrugations of a
chair plate, substantially as described with reference to Figs. 1, 2 and 4.
4. Forming on the upper face of a metallic sleeper prominences R of height
equivalent to the thickness of the chair plate, substantially as described with reference
to Figs. 5, 6 and 7.
1
1 1
M
T
1007
ABEL & IMRAY,
Agents for the Applicant.