Year: 1888

page_text: [Communicated from abroad by FRIEDRICH ALBERT HASENCLEVER, of Dusseldorf,
in the German Empire, Engineer.]
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex, Fellow of the Institute of Patent Agents, do hereby declare the nature
of this invention to be as follows:-
.
This invention relates to the construction of spikes suitable for fixing railway
chairs to wooden sleepers, and for like purposes, the chief object in view being to
obtain a better hold of the wood than can be got by the use of the spikes usually
employed.
For this purpose the spike is divided longitudinally into three separate parts, a
middle part which is of rectangular section, its greatest width being the diameter of
the spike, and two side parts each having for its section a circular segment somewhat
less than a semicircle throughout a considerable part of its length, but becoming
gradually thickened towards the end or point to a full semicircle.
The two side parts are made each with a collar at its top or thin end projecting
beyond its curved outline, and the middle part is made with a head of somewhat
larger diameter than the collars of the two side parts. A hole being bored in the
sleeper, the two side parts are inserted, and then the middle part is driven in between
them, spreading them apart towards their points and thus giving them a hold as of a
dovetail in the wood.
The collars at the tops of the side parts prevent them from being moved lengthwise
by the driving in of the middle part, the head of which, when it is fully driven, rests
on these collars projecting somewhat beyond them. When it is desired to remove the
spike, the middle part can be withdrawn by applying a pinching lever under the
projecting lip of its head, and then the side parts being left slack in the hole can be
readily withdrawn.
i
1000

page_text: An Improvement in Spikes for Fixing Railway Chairs and such
like Purposes.
I, OLIVER IMRAY of No. 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex, Fellow-of the Institute of Patent Agents 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 :-
For
This invention relates to the construction of spikes suitable for fixing railway
chairs to railway sleepers and for like purposes, the chief object in view being to
obtain a better hold of the wood than can be got by the use of the spikes usually
employed, also to afford facilities for withdrawing the spikes when necessary.
this purpose, the spike is divided longitudinally into three separate parts, a middle
part which is of approximately rectangular section, its greatest width being the
diameter of the spike, and two side parts each having for its section a circular
segment somewhat less than a semi-circle throughout a considerable part of its length
but becoming gradually thickened towards the end or point to a full semi-circle or
more. Each of the two side parts is made with a collar at its top or thin end,
projecting beyond its curved outline and the middle part is made with a head of
greater width than the shank. A hole being bored in the sleeper, the two side parts
are inserted, and then the middle part is driven in between them, spreading them
apart towards their points and thus giving them a hold as of a dovetail in the wood.
The collars at the tops of the side parts prevent them from being moved lengthwise
by the driving in of the middle part the head of which, when it is fully driven
projects on each side. When it is desired to remove the spike the middle part can be
withdrawn by applying a pinching lever under the projecting lip of its head, and then
the side parts, being left slack in the hole, can be readily withdrawn.
Fig. 1 of the accompanying drawings represents a section of a chair A and part of
a sleeper B with the two side parts CC of the spike introduced in the hole and the
middle part D about to be driven between them. Fig. 2 is a plan of the side parts.
Fig. 3 is a side view of the middle part D.
Fig. 4 shews the middle part D driven home having expanded the two side
parts CC. Fig. 5 is a sectional plan on Z Z, showing the side parts CC each
neur their end somewhat greater than a semi-circle in width.
It will be seen that each of the two side parts OC as shewn in Fig. 1 has at
its upper end a section which is less than a semi-circle, and about midway the side
begins to slope inwards until at the lower end the section is very nearly a semi-circle.
As shewn in Figs. 4 and 5 the section of each side part C at its lower end is some-
what greater than a semi-circle, the wood into which the spike is driven being
generally capable of yielding so as to admit a spike wider than the hole.
Each of the side parts C is made with a collar c at the top which prevents it from
being forced down when the middle part D is driven in. Also the middle part D has

page_text: a head d with lips d' d' projecting on each side over the space between the side parts.
When it is desired to withdraw the spike, a pinching lever can be inserted under one
of the projecting lips d¹ so as to prize up the middle part D which can then be
removed leaving the side parts C C free to be taken out.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what
I claim is :
.
A spike for fixing railway chairs and such like purposes, made in three parts, a
middle part which being driven in between the inwardly sloping sides of two outer
parts swells the lower ends of these parts outwards giving a dovetail form to the
spike, substantially as described.
ABEL & IMRAY,
Agents for the Applicant.