Year: 1887

page_text: Date of Application, 4th Apr., 1887
Complete Left, 4th Jan., 1888
Complete Accepted, 10th Feb., 1888
We, THOMAS WASs, of 12, Bridge Street, West Smethwick, Staffordshire, Fitter,
and PERCY WHEELER, of 12, Rotton Park Road, Birmingham, Warwickshire,
Manager, do hereby declare the nature of this invention to be as follows:-
Our invention of improvements in buffers for railway rolling stock consists in the
construction and arrangement of the parts as herein described whereby the durability
of certain parts is increased and repairs are facilitated by enabling the plunger to be
removed from and replaced in the cylinder or outer casing when required without
disturbing the spring; moreover the said improvements obviate the necessity of
making a hole in the headstock of the carriage or waggon frame for the end of the
plunger spindle to work in.
According to our invention we provide to project within the cylinder or outer
casing and connected to the base plate a central tubular boss of larger internal
diameter than the plunger spindle and having at its inner end an internal collar in
which latter the plunger spindle slides. The back end of the plunger spindle is
provided with a piston or collar (screwed or otherwise suitably connected to the
plunger spindle) which slides freely in the enlarged part of the tubular boss and which,
when the buffer head is in its extreme forward position, comes in contact with the
internal collar at the front of the tubular boss and so prevents the buffer head moving
farther. The said central tubular boss is preferably connected to the base plate by
having an external conical collar at its back end which fits into a countersunk recess
in the base plate which prevents the central tubular boss moving forwards but allows
of its being readily withdrawn from the cylinder from the back of the base plate.
The usual collar on the plunger spindle against which the spring presses is preferably
made loose and separate from the plunger spindle so that the plunger and its spindle
can be withdrawn from the front of the cylinder or casing.
By providing a central tubular boss and piston for the back end of the plunger
spindle as above described it is always steady and true as the parts will last a long
time in wear and by simply unscrewing and removing the collar or piston from tho
end of the plunger spindle (which can readily be done by means of a suitable key or
spanner inserted in the tubular boss from the back) the buffer head, plunger and
spindle can be withdrawn from the front of the buffer casing and the tubular boss is
free to be removed from the back.
1
J
11007
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Buffers for Railway Rolling Stock.
We, THOMAS WASS, of 12, Bridge Street, West Smethwick, Staffordshire, Fitter,
and PERCY WHEELER, of 12, Rotton Park Road, Birmingham, Warwickshire,
Manager, 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:-
Our invention of improvements in buffers for railway rolling stock consists in the
construction and arrangement of the parts as herein described whereby the durability
of certain parts is increased and repairs are facilitated by enabling the plunger to be
removed from and replaced in the cylinder or outer casing when required without-
disturbing the spring; moreover the said improvements obviate the necessity of
making a hole in the headstock of the carriage or waggon frame for the end of the
plunger spindle to work in.
According to our invention we provide to project within the cylinder or outer casing
and connected to the base plate a central tubular boss of larger internal diameter
than the plunger spindle and having at its inner end an internal collar in which latter
the plunger spindle slides. The back end of the plunger spindle is provided with a
piston or collar (screwed or otherwise suitably connected to the plunger spindle)
which slides freely in the enlarged part of the tubular boss and which, when the
buffer head is in its extreme forward position, comes in contact with the internal collar
at the front of the tubular boss and so prevents the buffer head moving farther. The
said central tubular boss is preferably connected to the base plate by having an
external conical collar at its back end which fits into a countersunk recess in the
base plate which prevents the central tubular boss moving forwards but allows of its
being readily withdrawn from the cylinder from the back of the base plate. The
usual collar on the plunger spindle against which the spring presses is preferably
made loose and separate from the plunger spindle so that the plunger and its spindle
can be withdrawn from the front of the cylinder or casing.
By providing a central tubular boss and piston for the back end of the plunger
spindle as above described it is always steady and true as the parts will last a long
time in wear and by simply unscrewing and removing the collar or piston from the
end of the plunger spindle (which can readily be done by means of a suitable key or
spanner inserted in the tubular boss from the back) the buffer head, plunger and
spindle can be withdrawn from the front of the buffer casing and the tubular boss is
free to be removed from the back.
We will now proceed to describe with reference to the accompanying drawing the
manner in which our said invention is to be performed.
Fig. 1 is a side elevation and Fig. 2 a sectional front elevation of a buffer embodying
our improvements; Figs. 3 and 4 are sectional side elevations of the same the buffer
in Fig. 3 being represented in its compressed position, and in its extended position in

page_text: Fig. 4; Fig. 5 shews how the buffer head and spindle can be removed from the
casing without disturbing the spring; Fig. 6 represents in side sectional elevation the
tubular boss and the base plate of the same separately and Figs. 7, 8 and 9 represent
in sectional side elevation three slightly modified forms of the buffer illustrated by
the preceeding Figures their springs being removed.
The same letters of reference indicate corresponding parts in all the Figures.
Referring firstly more particularly to Figs. 1 to 6, both inclusive, a is the ordinary
cylinder or outer casing of the buffer and 6 is the base plate to which the outer casing
is bolted by the six bolts a¹; c is the buffer head with which is formed the plunger
and plunger spindle c* on which latter is the usual collar for the spring.g to bear
against. is the central tubular boss projecting inwardly and made loose from the
base plate and connected thereto by having at its back end an external conical collar d²
which fits into a countersunk recess b¹ in the base plate 6 and keeps the tubular boss d
steady and prevents its moving forwards. The headstock of the carriage or waggon
to which the buffer is fixed prevents the boss d moving backwardly out of its hole in
the base plate. The tubular boss d is of larger internal diameter than the plunger
spindle c² and screwed or otherwise removably secured on the back end of the latter
is a collar or piston e fitting freely in the tubular boss d. When the buffer head c is
in its extreme forward position (see Fig. 4) this collar e comes into contact with the
internal collar or contracted end d¹ of the tubular boss d and thus prevents the buffer
head moving farther. The collar or piston e is locked on to the plunger spindle in
any ordinary manner as for instance by the locking screw i (see Fig. 4) which is
screwed half in the latter and half in the former.
To remove the buffer head c with its plunger cand plunger spindle c² from the
outer casing a without disturbing the buffer spring g the locking screw i is first
removed and then the collar or piston e is unscrewed from the end of the plunger
spindle c by a key h (see Fig. 5) inserted in the tubular boss from the back, this key
having two projecting pips, which fit into corresponding holes e¹, e in the
collar e.
The buffer head with its plunger and plunger spindle can now be with-
drawn from the front of the buffer and the collar e and tubular boss d can be removed
from the back leaving the spring 9 and collar fin position in the casing.
It will be evident that the construction of the parts can be modified without departing
from the nature of our invention as for instance as in the buffer illustrated by Fig. 7
where the plunger spindle c² is made separate from the buffer head c and plunger c
and is secured thereto by having a reduced shank c³ which passes through a central
hole in the plunger c¹ and is rivetted over at its extreme end c³. In this modification
the collar or piston e is locked on to the end of the plunger spindle c² by means of a
circular plate e² secured by a screw e³, and the tubular boss d is made fast to the base
plate by being screw threaded outside near its base and having a nut d³ which
screws tight against the base plate inside. In the modifications illustrated by Figs. 8
and 9 the collar or piston e is formed in a piece with the plunger spindle c² which
latter is removably secured to the plunger c¹ by being screwed therein and is prevented
from shaking loose by the two locking screws j, j screwed into the plunger as shewn.
The tubular boss d in the modification illustrated by Fig. 8 has a flange d formed
with it and is secured to the base plate 6 by rivets which pass through this flange
and through the base plate: the tubular boss & illustrated by Fig. 9 is formed in a
piece with the base plate b.
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare that what
we claim is :
1st. The combination, with a plunger and plunger spindle provided with a loose
collar as above described, for bearing against the spring, of a piston or collar of larger
diameter than the plunger spindle removably secured on the end thereof and a tubular
boss or guide connected to or formed with the base plate and fitting around the said
piston and having an internal collar fitting on the said plunger spindle all substantially

page_text: as and for the purposes hereinbefore described with reference to Figs. 1 to 7 of the
accompanying drawing.
2nd. The combination, with a buffer head and plunger, of a plunger spindle made
separate from the plunger and removably secured thereto, the said plunger spindle
having a head forming a piston and a loose collar for the spring to bear against, and
a tubular boss or guide connected to or formed with the base plate and fitting round
the said piston and having an internal collar fitting on the said plunger spindle
and forming a stop for the said piston all arranged substantially as and for the
purposes herein before described with reference to Figs. 8 and 9 of the accompanying
drawing.
000