An Improved Rail Joint.
Year: 1899

page_text: An Improved Rail Joint.
I, HENRY EDWARD JAMES, of 24, Ravenstone Road, Hornsey, N., Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to an improved joint for rails and it has for its object
the provision of a means whereby the bolts securing the fish plates to the ends
of the said rails shall be prevented from becoming slack under the vibration of
the trains or other vehicles passing over the rails.
In carrying the invention into effect I provide two plates adapted to lie one
on each side of the rail and against the plain vertical portion thereof.
In one of these plates I drill or otherwise form suitable holes for the passage
therethrough of bolts, for which corresponding holes are formed in the rails.
The bolts are provided at their ends with a screw thread which is preferably a
right hand thread and is designed to engage with a like thread formed in a suit-
able nut. The nut is preferably of the usual hexagonal form, and in addition
to its internal thread is provided with a reduced portion upon which is formed
an external thread preferably left handed and of a somewhat coarser or finer pitch
than that upon the bolt. The thread last referred to engages with a like thread
formed within the hole provided in the second plate, into which, when coupling
up the rails, the nut is screwed, the bolt being afterwards screwed therein,
and when right home, a slight forward turn given thereto locks the whole in
the plate and effectually prevents any accidental movement of the bolt.
Dated this 15th day of May 1899.
J. E. EVANS-JACKSON & Co.,
Agents for the Applicant.
1, HENRY EDWARD JAMES, of 73, Effingham Road, late of 24, Ravenstone Road,
Hornsey, N., 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:
---
This invention relates to an improved joint for rails and it has for its object
the provision of a means whereby the bolts securing the fish plates to the ends
of the said rails shall be prevented from becoming slack under the vibration of
the trains or other vehicles passing over the rails.
In carrying the invention into effect I provide two plates adapted to lie one
on each side of the rail and against the plain vertical portion thereof.

page_text: In one of these plates I drill or otherwise form suitable holes for the passage
therethrough of bolts, for which corresponding holes are formed in the rails.
The bolts are provided at their ends with a screw thread which is preferably a
right hand thread and is designed to engage with a like thread formed in a suit-
able nut. The nut is preferably of the usual hexagonal form, and in addition
to its internal thread is provided with a reduced portion upon which is formed
an external thread preferably left handed and of a somewhat coarser or finer pitch
than that upon the bolt. The thread last referred to engages with a like thread
formed within the hole provided in the second plate, into which, when coupling
up the rails, the nut is screwed, the bolt being afterwards screwed therein.
In order that the invention may be the better understood drawings are appended
in which:
Fig. 1, is a sectional elevation of a rail to which the invention has been applied.
Fig. 2, is an elevation.
Fig. 3, is a view of the nut detached from the bolt.
Fig. 4, is a plan of same.
Referring to the drawings it will be seen that the bolt a having at its end a
screw thread b is provided with a nut c having an internal thread c¹ to corres-
pond with that upon the bolt. The nut e is provided in addition to the thread c¹
with an outer thread c² the nut being turned down for some part of its length
to receive it. This last mentioned thread is in the present instance left handed
but the threads within and upon the nut requiring to be opposite it follows that
the said thread would be either right or left handed, according to the thread
upon the bolt being either the one or the other. d Figs. 1 and 2 is a fish plate
drilled or otherwise provided with the usual number of holes, the said holes
being enlarged and having formed in them threads designed to agree with
those upon the nut c. The rail e and plate f are drilled to allow of the free
passage therethrough of the bolt. The thread upon the nut c is preferably of a
different pitch to that upon the bolt. In practice the nut is first screwed into
the plated and the bolt then passed through plate f and rail e being screwed
home into the nut to which a slight forward turn is then given locking the
bolt and effectually preventing any accidental movement thereof.
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:
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1. In a rail joint the combination of a bolt or the like a with a nut c provided
with external and internal threads of varying pitch and opposite direction with
plates and d one of which plates is provided with a. thread designed to receive
the external thread upon the nut c substantially as herein described and illus-
trated by the appended drawings.
2. The improved rail joint substantially as herein described and illustrated
by the appended drawings.
J. E. EVANS-JACKSON & Co.,
Agents for the Applicant.