IMPROVEMENTS IN RAILWAY BUFFERS
Year: 1885

page_text: I, DAVID NELSON ARNOLD of Endcliffe Mount Ranmoor, Sheffield, in the
County of York Mechanical Engineer, do hereby declare the nature of my said
invention for "IMPROVEMENTS IN RAILWAY BUFFERS" to be as follows:-
This invention consists in making a cheap railway buffer of the most solid con-
struction adapted for any kind of rolling stock the buffer rod or plunger being
secured without screw nut and cannot possibly fall out in working but may be
immediately withdrawn in case of accident by collision or the like.
In manufacturing a buffer, the rod cylinder and plates are made of wrought iron
or cast steel, by preference, cast steel, the buffer being specially designed for making
in that material.
On the back end of the buffer rod is an oblong projection; in the back plate or
plates, which are constructed solid, is an oblong alot corresponding in size to
the oblong projection at the end of the buffer rod over which the back buffer plate is
passed and then turned round at right angles until the long axis of the oblong
projection is at-right angles to the long axis of the slot in the back plate or plates.
The buffer rod is inserted into the cylinder from the front, the back plate is
passed over the collar or projection and turned round with the hole at right angles
to the collar the said back plate being rivetted or bolted to the cylinder.
The part of the buffer rod which slides in the neck of the cylinder is oblong or
any other shape in cross-section and the neck is of the corresponding figure; by
this construction it is impossible for the buffer rod to be turned and so long as the
buffer, rod, does not turn, the collar or projection on the buffer rod cannot coincide
with the oblong hole in the back plate therefore it does not allow the buffer. rod to
become loose or to drop out.
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Or that part of the buffer rod which works into the neck of the cylinder can be
cast round with a convex rib or projection top and bottom running longitudinally
with the rod and a concave recess in the neck of the cylinder thereby preventing,
when in position, the rotation of the buffer rod...
3
Or the buffer rod may be made round with two solid back plates fixed at
different angles to the collar or projection.
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A loose buffing plate-for the spring to rest upon-is passed over the end of the
buffer rod in the usual way until it reaches,the buffing projection on the buffer rod;
the spring is placed in position and the plate or plates passed over the collar or
projection and bolted to the cylinder bringing about half an inch compression on
the spring.
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page_text: Improvements in Railway Buffers.
I, DAVID NELSON ARNOLD, of Endcliffe Mount Ranmoor, Sheffield, in the
County of York Mechanical Engineer, do hereby declare the nature of my said
invention for, "IMPROVEMENTS IN RAILWAY BUFFERS" and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement :-
This invention consists in making a cheap railway buffer of the most solid con-
struction, adapted for any kind of rolling stock the buffer rod or plunger being
Becured without screw nut and cannot possibly fall out in working but may be
immediately withdrawn in case of accident by collision or the like.
In manufacturing a buffer the rod, cylinder and plates are made of wrought iron,
or cast steel, by preference, cast steel, the buffer being specially designed for making
in that material.
On the back end of the buffer rod is an oblong projection; in the back plate or
plates, which are constructed solid, is an oblong slot, corresponding in size to the
oblong projection at the end of the buffer rod over which the back buffer plate is
passed and then turned round at right angles until the long axis of the oblong
projection is at right angles to the long axis of the slot in the back plate or plates.
The buffer rod is inserted into the cylinder from the front, the back plate is
passed over the collar or projection and turned round with the hole at right angles
to the collar the said back plate being rivetted or bolted to the cylinder.
The part of the buffer rod which slides in the neck of the cylinder is oblong or
any other shape in cross-section and the neck is of the corresponding figure; by
this construction it is impossible for the buffer rod to be turned, and so long as the
buffer rod does not turn, the collar or projection on the buffer rod cannot coincide
with the oblong hole in the back plate therefore it does not allow the buffer rod to
become loose or to drop out.
Or that part of the buffer rod which works into the neck of the cylinder can be
cast round with a convex rib or projection top and bottom running longitudinally
with the rod and a concave recess in the neck of the cylinder thereby preventing,
when in position, the rotation of the buffer rod.
Or the buffer rod may be made round with two solid back plates fixed at
different angles to the collar or projection.
A loose buffing plate for the spring to rest upon, is passed over the end of the
buffer rod in the usual way until it reaches the buffing projection on the buffer rod;
the spring is placed in position and the plate or plates passed over the collar or
- projection and bolted to the cylinder bringing about half an inch compression on
the spring.
The accompanying drawings illustrate my invention.
Figure 1, is a half longitudinal section showing buffer rod A, with oblong
projection B on the end and the back plate C Also loose buffer D for the spring Ĕ
to rest unon

page_text: Figure 3 is an enlarged view of part of back plate C shewing the slot for oblong
projection with it turned to right angles.
Figure 4 is an enlarged view shewing projection on end of buffer rod passed
through the back plate.
Figure 5 is a front view in elevation with vertical section of buffer plate D that
fits up to the collar on the buffer rod A for the spring to rest against.
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 :-
Firstly. An improved railway buffer adapted to any kind of rolling stock the
buffer rod or plunger being secured without screw nut by means of a lug or oblong
projection.
Secondly. The construction of a railway buffer with one or more back plates
having a slot or slots to receive the projection on the end of the buffer rod and
which when placed in position are at right angles to each other.
Thirdly. The construction of the neck of the cylinder being oblong, or other
shape in cross section, the buffer rod or neck of plunger corresponding with it
prevents the rotation of the buffer rod, and the collar or projection thereon from
coinciding with the oblong hole or holes in the back plate or plates.
Fourthly. Improvements in the manufacture of a cheap railway buffer made, by
preference of cast steel as herein before specified, described and as illustrated by
accompanying drawings.