IMPROVEMENTS IN THE CON- STRUCTION OF BUFFERS FOR RAILWAY AND OTHER SIMILAR USES
Year: 1872

page_text: LETTERS PATENT to Johan Anderson Lindblad, of Sheffield, in the
County of York, for the Invention of "IMPROVEMENTS IN THE CON-
STRUCTION OF BUFFERS FOR RAILWAY AND OTHER SIMILAR USES."
Sealed the 5th November 1872, and dated the 18th May 1872.
PROVISIONAL SPECIFICATION left by the said Johan Anderson
Lindblad at the Office of the Commissioners of Patents, with his
Petition, on the 18th May 1872.
I, JOHAN ANDERSON LINDBLAD, of Sheffield, in the County of York,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN THE CONSTRUCTION OF BUFFERS FOR RAILWAY AND OTHER SIMILAR USES," to
be as follows :-
This Invention relates to improvements in buffers for railway and
other similar uses (that is, wherever buffers are used), and consists of
certain improved and simple methods or means of securing the buffer
plunger in or to its box, the same being equally applicable to single or
double spring buffers of any form, and with either a rod or hollow

page_text: plunger, and especially to every form of buffer where single or double
steel springs are employed to give the desired resisting power and
elasticity.
I will first describe the application of the improved means to a single
spring buffer having a rod as its plunger; and, secondly, when having a
hollow plunger; thirdly, to a double-spring buffer when the plunger is
hollow, and works within the box; and, fourthly, when it encircles the
same.
First. I prolong the rod into the interior of the box, and at such part
make it of a smaller diameter, and place thereupon the washer against
which the spring bears so as to abut against the larger diameter. The
washer is then secured on the rod by a nut or collar and nut, or collar,
washer, and nut; or the collar may be secured to the rod by a key
passed through both; or the smaller diameter may be formed with a
screw thread, and screwed into the washer or an inner collar, and pre-
vented from turning by a pin.
Second. The plunger is secured to the spring washer by a small
screwed rod (or bolt) inserted from the rear, and held by a nut or
collar and nut, or collar, washer, and nut; or the screwed part may
project into the box from the interior of the plunger, and be secured by
similar means.
Third. A projecting rod is secured to or forms part of the rear plate
of the buffer box, and projects through the rear of the plunger which
contains the spring washer.
And fourth. The projecting rod is secured to or forms part of the
plunger head, and projects through the front of the box, which contains
the spring washer, in both of which latter cases the rod and washer are
secured together by any of the means above described.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of May, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did for Herself, Her heirs and successors, give and
grant unto me, the said Johan Anderson Lindblad, Her special licence
that I, the said Johan Anderson Lindblad, my executors, administrators,
and assigns, or such others as I, the said Johan Anderson Lindblad, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
THE CONSTRUCTION OF BUFFERS FOR RAILWAY AND OTHER SIMILAR USES," upon
the condition (amongst others) that I, the said Johan Anderson Lindblad,
my executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe
and ascertain the nature of my said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Johan Anderson Lindblad, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement in writing, and on reference being had to the
accompanying Drawings, that is to say :-
This Invention relates to improvements in the construction of buffers
for railway and other similar uses, which consist of simple and effective
means of securing the buffer plunger in or to its box, equally applicable
to single or double spring buffers of any form having either a rod
or hollow plunger, and especially to buffers where single or double
steel springs are employed to give the desired resisting power and
elasticity.
I will, firstly, describe the application of the Invention to a single
spring buffer having a rod as its plunger; and, secondly, when
having a hollow plunger; thirdly, to a double spring buffer when the
plunger is hollow, and works within the box; and, fourthly, when it
encircles it.
:

page_text: Firstly. In constructing or applying the Invention to buffers of this
description I prolong the plunger rod 1 (see Figure 1) into the interior
of the box 2, and at the part 3 make it of a smaller diameter, and place
thereupon a loose washer plate 4 (against which the spring 5 bears), so
as to abut against the larger diameter. The rod is then secured in the
box by a nut 6 or by a collar or elongated ferrule 7 and nut 6, or by a
ferrule 7, washer 8, and nut 6; or the rod may be secured by a key 9
passing through the ferrule 7 and part 3 of the rod 1, (see Figure 2);
or the part 3 may be formed with a screw thread, (see Figure 3,) and
screwed into the plate 4, or an inner tapped ferrule 10, see Figure 4,
and prevented from turning by a pin 11.
Secondly. In buffers of this description the plunger 1, see Figure 5, is
secured to the spring washer plate 4, and in the box 2 by a small
screwed rod or bolt 12 inserted from the rear, and held by the means
shown and above described; or the screwed part of the bolt may project
into the box from the interior of the plunger, and be secured by similar
means, see Figure 6.
Thirdly. In buffers of this description a projecting rod 13, see Figure 7,
is secured to or forms part of the rear plate 14 of the box 2, and projects
through the rear of the plunger 1, which contains the spring washer
plate 4, and which by the means above described and shown is securely
held in the box.
And fourthly. In buffers of this description the rod 13 is secured to
or forms part of the plunger head 15, and projects through the front of
the box which contains the plate 4 secured to the rod 13 by the means
described, so that the plunger is secured to the box.
The provision of the elongated ferrules and the equivalents above
described and shown, besides serving as means of securing the plunger
afford centre stays to the springs whether single or double.
Having now described the nature and object of my said Invention
for "Improvements in the Construction of Buffers for Railway and other
similar Uses," together with the manner in which the same is to be
or may be performed or carried into practical effect, I would remark
in conclusion that I claim as my Invention, the improved means of
sccuring the buffer plunger in or to its box, and the application thereof

page_text: to buffers of every description, substantially as above described, and as
illustrated on the accompanying Drawings, or any mere modification
thereof.
In witness whereof, I, the said Johan Anderson Lindblad, have
hereunto set my hand and seal, this Twenty-fourth day of
October, in the year of our Lord One thousand eight hundred and
seventy-two.