IMPROVEMENTS IN THE MANUFACTURE OF BUFFER AND OTHER SPRINGS WHEN VULCANIZED INDIA-RUBBER IS USED
Year: 1858

page_text: LETTERS PATENT to William Hooper, of Mitcham, in the County of
Surrey, for the Invention of "IMPROVEMENTS IN THE MANUFACTURE OF
BUFFER AND OTHER SPRINGS WHEN VULCANIZED INDIA-RUBBER IS USED."
PROVISIONAL SPECIFICATION left by the said William Hooper at the
Office of the Commissioners of Patents, with his Petition, on the
2nd March 1858.
I, WILLIAM HOOPER, of Mitcham, in the County of Surrey, do hereby
declare the nature of the Invention for "IMPROVEMENTS IN THE MANUFACTURE
OF BUFFER AND OTHER SPRINGS WHEN VULCANIZED INDIA-RUBBER IS USED," to be as
follows:-
This Invention has for its object improvements in the manufacture of buffer
and other springs when vulcanized india-rubber is used. For this. purpose
each spring is moulded with a projection with dove-tail or inclined sides, in
order to fix such spring in a recess of a corresponding form, so that the spring
is fixed by such projection. The exterior of the buffer or other spring may be
varied in form according to the object to be accomplished. In some cases a
buffer or other spring will simply be in the form of a single block, in, other
arrangements a spring will be in the form of a succession of blocks of india-
rubber combined by blocks of lesser diameter, all cast in one block. and fixed
by a dove-tail projection, as above mentioned.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Hooper in the Great Seal Patent Office on the 2nd
September 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
HOOPER, of Mitcham, in the County of Surrey, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of March, in the year of our Lord One
thousand eight hundred and fifty-eight, in the twenty-first year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Hooper, Her special licence that I, the said William Hooper, my
executors, administrators, and assigns, or such others as I, the said William
Hooper, 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 MANUFACTURE
OF BUFFER AND OTHER SPRINGS WHEN VULCANIZED INDIA-RUBBER IS USED,"
condition (amongst others) that I, the said William Hooper, 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 the
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.
upon
the
NOW KNOW YE, that I, the said William Hooper, do hereby declare the
nature of the said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement
thereof, that is to say:-
This Invention has for its object improvements in the manufacture of buffer
and other springs when vulcanized india-rubber is used. For this purpose
each spring is moulded with a projection with dove-tail or inclined sides, in
order to fix such spring in a recess of a corresponding form, so that the spring
is fixed by such projection. The exterior of the buffer or other spring may be
varied in form, according to the object to be accomplished. In some cases a
buffer or other spring will simply be in the form of a single block, in other
arrangements a spring will be in the form of a succession of blocks of india- s
rubber combined by blocks of lesser diameter, all cast in one block and fixed
by a dove-tail projection, as above mentioned.

page_text: Having thus stated the nature of my Invention, I will proceed more fully
to describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
Figure 1 shows a plan view, and Figure 2 is an end view of a buffer or
spring apparatus according to my Invention. a is the vulcanized india-rubber
buffer or spring applied in a dove-tail 6 in the end framing of a railway
carriage or truck. The form of the dove-tail or holding part of the india-
rubber may be varied, providing it be produced with an enlargement suitable
to fit the space formed to receive it, the opening into the space being less than
the space beyond, in which the larger part of the dove-tail fits. The buffing
or projecting part of a buffer or spring may also be varied, according to the
purpose to which it is to be applied.
Figure 3 shows another form of buffer or spring, and others may be used
provided that each spring is fixed in its position by means of a dove-tail, as
herein described. The india-rubber is cast in a mould to the form required
and then vulcanized.
In witness whereof, I, the said William Hooper, have hereunto set my
hand and seal, this Second day of September, in the year of our Lord
One thousand eight hundred and fifty-eight.
Witness,
FRED HARRIS.
WILLIAM HOOPER. (L.S.)