An Improvement in Metallic Sleepers for Railways.
Year: 1886

page_text: Date of Application, 5th June, 1886.
Complete Left, 5th Mar., 1887.
Complete Accepted, 5th Apr., 1887.
PROVISIONAL SPECIFICATION.
An Improvement in Metallic Sleepers for Railways.
I, HARRY LIVESEY of No. 2 Victoria Mansions, Westminster in the County of
Middlesex Civil Engineer, do hereby declare the nature of this invention, to be as
follows:-
:―
In many cases, metallic sleepers are rolled with parts thickened which are partly
cut through so that tongues or flaps of the metal are turned upwards and bent over to
form clips for holding down the rail flange, one of these clips receiving a key which
being driven between it and the flange and partly overlapping the flange, holds the
rail firmly in position. Now, according to my invention I make the tongue or flap
which is turned up and bent to form the key clip to present on its inner face a number
of serrations transverse to the line of rail. I drive between this clip and the rail
flange a key which has on its back corresponding serrations. The elasticity of the clip
allows the protuberances of the serrations to pass each other in driving the key, and
afterwards when the key has been driven the engagement of the serrations with each
other has the effect of preventing the key from being shaken backwards by vibration.
The serrations on the inner face of the clip may be produced in the act of rolling
the sleeper by making the rolls so as to produce a number of longitudinal grooves
along the thickened part of the sleeper from which the tongue or flap is to be turned
up to form the clip. Or, without so rolling with grooves, the serrations may be
impressed on the clip when it is heated and stamped into shape.
Dated this 5th day of June 1886
ABEL & IMRAY,
28, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: COMPLETE SI PUITICATION.
An Improvement in Metallic Sleepers for Railways.
I, HARRY LIVESEY of No. 2 Victoria Mansions, Westminster in the County of
Middlesex Civil Engineer do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement :—
In many cases, metallic sleepers are rolled with parts thickened which are partly
cut through so that tongues or flaps of the metal are turned upwards and bent over to
form clips for holding down the rail flange, one of these clips receiving a key which
being driven between it and the flange and partly overlapping the flange, holds the
rail firmly in position. Now, according to my invention I make the tongue or flap
which is turned up and bent to form the key clip to present on its inner face a number
of serrations transverse to the line of rail. 1 drive between this clip and the rail
flange a key which has on its back corresponding serrations. The elasticity of the
clip allows the protuberances of the serrations to pass each other in driving the key,
and afterwards, when the key has been driven, the engagement of the serrations with
each other has the effect of preventing the key from being shaken backwards by
vibration. The serrations on the inner face of the clip may be produced in the act of
rolling the sleeper by making the rolls so as to produce a number of longitudinal
grooves along the thickened part of the sleeper from which the tongue or flap is to be
turned up to form the clip. Or, without so rolling with grooves, the serrations may
be impressed on the clip when it is heated and stamped into shape.
Fig. 1 of the accompanying drawings is a transverse section, Fig. 2 is a longitudinal
section, and Fig. 3 is a plan of a bowl sleeper with punched up clips according to my
invention, these clips being internally serrated as indicated at S to suit a key K
correspondingly serrated on its back. The serrations S may be effected in the stamping
or pressing process, used in forming the clip. As shewn in the drawings, they are
formed by rolling the plate from which the sleeper is made with corrugations C, these
corrugations serving at the same time to strengthen that part of the sleeper where the
rail rests and when the clips are punched up from it.
Having now particularly described and ascertained the nature of my invention and
in what manner the same is to be performed. I declare that what I claim is:
--
1. The construction and use of metallic sleepers for railways having the rail clips
which are formed by tongues punched up from the metal of the sleeper, internally
serrated to engage correspondingly serrated keys, substantially as herein described.
2. The method herein described of forming internal serrations of rail clips by
punching the clips up from sleeper plates rolled with suitable corrugations.
11
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1007
ABEL & IMRAY,
Agents for the Applicant.