Improvements in Railway and similar Buffers.
Year: 1899

page_text: Date of Application, 4th May, 1899
Complete Specification Left. 18th Jan.. 1900-Accepted. 24th Feb. 1900'
Improvements in Railway and similar Buffers.
I, FREDERICK JOHN TALBOT, of Globe Steel Works, Sheffield, in the County
of York, Chairman of Ibbotson Brothers and Company Limited, do hereby
declare the nature of this invention to be as follows:-
My invention relates to railway and other similar buffers and has for its
object to improve their construction by the adoption of simple and effective
means for securing the plunger-rod within the box or case and at the same time
facilitate its removal from and replacement in the said box or case.
One method by which the plunger-rod has been secured within the box or
case is by the use of a lock nut which requires such an amount of force to un-
screw it that without special appliances the necessary operation cannot be per-
formed.
Another method adopted is by the use of a clip or lock washer or cap in com-
bination with screwed washer or washers but this is defective as should the spring
break, the clip or lock washer or cap will drop and the plunger may, by the
unscrewing of the screwed washer or washers, drop out of the box or case whilst
if set screws are used to obtain security they are liable to break, rust up or get
jammed so that they could not be removed when required.
According to my present invention, instead of using either of the arrangements
above referred to I use a collar tapped in the ordinary way which can be
screwed by hand upon the plunger-rod and I secure it by means of a plate having
projections upon it which engage in grooves formed for their reception in the
collar and in the plunger rod. The said grooves are inclined so that the action
of pressing the said plate into position slightly bends the said projections and thus
securely locks the said collar upon the buffer rod. The said plate can be put
on either side of the collar and the said projections may be formed in a variety
of ways.
The said plate may be readily removed by the following means. Two tapped
holes are made in the plate near to the said projections and two set screws are
inserted therein, thus by turning the set screws their ends are caused to thrust
against the collar on the plunger-rod and thereby lift the plate, and in doing
so bend back the projections to their original position.
The said tapped holes are slightly countersunk in the side of the plate which
comes into contact with the spring so that the bumping against the spring may
not injure the threads in the holes.
1
גד
1
1
1000
HARRIS & MILLS,
23, Southampton Buildings, London, W.C., Agents.

page_text: f
Improvements in Railway and similar Buffers.
I, FREDERICK JOHN TALBOT, of: Globe Steel. Works, Sheffield, in the County
of York, Chairman of Ibbotson Brothers and Company Limited, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:―
ZOITADI10492 121
My invention relates to railway and other similar, buffers and has for its
object to improve their construction by the adoption of simple and effective
means for securing the plunger rod within the box or case and at the same time
facilitate, its removal from and replacement in the said box or case..
One method by which the plunger-rod has been secured, within the box, or
case is by the use of a lock nut which requires such an amount of force to un-
screw it that without special appliances the necessary operation cannot be per-
fornied
1
"
30. 10
Another method adopted is by the use of a clip or lock washer or cap in com-
bination with screwed washer or washers but this is defective as should the spring
break, the clip or lock washer or cap will drop and the plunger may, by the
unscrewing of the screwed washer or washers, drop out of the box or case whilst
if set screws are used to obtain security they are liable to break, rust up or get
jammed so that they could not be removed when required.
According to my present invention, instead of using either of the arrangements
above referred to I use a collar tapped in the ordinary way which can be
screwed by hand upon the plunger-rod and I secure it by means of a plate having
projections upon it which engage in grooves formed for their reception in the
collar and in the plunger rod. The said grooves are inclined so that the action
of pressing the said plate into position slightly bends the said projections and thus
securely locks the said collar upon the buffer rod.
The said plate can be put on either side of the collar and the said projections
may be formed in a variety of ways.
The said plate may be readily removed by the following means. Two tapped
holes are made in the plate near to the said projections and two set screws are
inserted therein, thus by turning the set screws their ends are caused to thrust
against the collar on the plunger rod and thereby lift the plate, and in doing
so bend back the projections to their original position.
The said tapped holes, are slightly countersunk in the side of the plate which
comes into contact with the spring so that the bumping against the spring may
not injure the threads in the holes.
I will more fully describe my invention by the aid of the accompanying draw-
ings in which Fig. 1 is a sectional view of parts of a railway buffer showing one
form of my invention applied thereto.
41
Fig. 2 is a face view and Fig. 3 an edge view of my improved locking plate
and Fig. 4 is a sectional elevation showing the, method of removing the locking
plate. Fig. 5 is a sectional view and Fig. 6a face view of Fig. 5. Fig. 7 is a
sectional view and Fig. 8 a face view of Fig. 7 and Figs. .9 and 10 are sectional
views representing various modifications."
In all the figures like parts are indicated by similar letters of reference.
a represents a portion of a buffer plunger rod provided with a screw thread a¹
on to which a tapped collar is screwed in the ordinary way.
According to my invention instead of using either of the locking arrangements
heretofore in use I employ a locking plate c having projections
upon it which

page_text: engage in grooves a² 61 formed for their reception respectively in the plunger
rod a and in the collar b. These grooves are inclined so that in the action of
pressing the locking plate c into position to lock the collar bon the plunger rod a,
the said projections are bent by the bases of said grooves and thus securely lock
the collar upon the buffer rod a.
The locking plate e can be put on either side of the collar b; in the forms
shown at Figs. 1 to 8 the locking plate is shown on the rear side of the collar b
whilst in the forms shown at Figs. 9 and 10 the locking plate is shown on the
front of the collar. In these cases a bearing plate e may be placed on the rear
side of the collar b to form a smooth bearing surface for the spring.
In the forms shown at Figs. 1 to 4 and 10 the locking plates c and the pro-
jections thereon are represented as made of malleable cast iron or cast steel
or of iron or steel forgings whilst in the forms shown at Figs. 5 to 9 they are
shown formed from rolled or wrought plates, the projections being formed
by cutting tongue pieces in said plates and then pressing them down to about
right angles thereto. In the forms shown at Figs. 5, 6 and 9 these tongue pieces
or projections c' are shown formed from the inner part of the plate whilst in
that shown at Figs. 7 and 8 they are shown formed from the outer part of the
plate.
Two
The locking plate c may be readily removed by the following means.
tapped holes are made in the plate near to the projections c¹ and two set
screws d are inserted therein, thus by turning the set screws & their ends are
caused to thrust against the collar bon the plunger rod a and thereby lift the
plate c, and in doing so bend back the projections to their original position.
The tapped holes are slightly countersunk in the side of the plate c which
comes into contact with the spring so that the bumping against the spring may
not injure the threads in the holes.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is:-
1. In railway and similar buffers the combination with the retaining collar
ordinarily screwed on to the buffer plunger rod of a locking plate provided with
projections which are forced into co-acting inclined slots formed in the screwed
parts of the plunger rod and collar, substantially as herein set forth.
2. In railway and similar buffers having a retaining collar screwed on to the
buffer plunger rod, the combination of co-acting inclined slots formed in the
screwed parts of the plunger rod and collar, a locking plate formed with pro-
jections which are forced into said inclined slots to lock the parts together and
screw holes in said locking plate to receive set screws whereby the said locking
plate can be removed, substantially as herein set forth.
Dated this 18th January 1900.
HARRIS & MILLS,
23, Southampton Buildings, London, W.C., Agents.