IMPROVEMENTS IN THE CASES for BUFFER SPRINGS
Year: 1874

page_text: LETTERS PATENT to Edward Gatwood, Engineer, of Hardwick House,
Easton Road, Bristol, and George Spencer, Engineer; of 77, Cannon
Street, London, for the Invention of "IMPROVEMENTS IN THE CASES for
BUFFER SPRINGS."
Sealed the 2nd June 1874, and dated the 8th April 1874.
PROVISIONAL SPECIFICATION left by the said Edward Gatwood and
George Spencer at the Office of the Commissioners of Patents, with
their Petition, on the 8th April 1874.
WC, EDWARD GATWOOD, Engineer, of Hardwick House, Easton Road,
Bristol, and GEORGE SPENCER, Engineer, of 77, Cannon Street, London,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN THE CASES FOR BUFFER SPRINGS," to be as follows: -
•
Our Invention of improvements in the cases for buffer springs consists
in certain methods of constructing the cases of such buffers that the
centre rod used for guiding the spring instead of working through the
headstock as is generally done is made to work inside the head of the
°
'

page_text: plunger. To accomplish this purpose we place in the head of the
plunger a block of wood or metal, having a hole in the centre for the
rod to work in, or we provide a projection round the inside of the
plunger, against which block or projection we place a strong iron plate,
through a hole in the centre of which passes the rod with its head
working in the hole of the block of wood or metal for guiding the spring
and for holding the plunger and base together. To retain such plate in
position we rivet or fasten to the inside of the plunger a ring of metal;
by this means the plate is secured in position, or the plate and ring may
be made in one, the block of iron or wood being used, as mentioned, to
take the thrust, but we prefer that the ring and plate should be separate
so as to prevent strain on the rivets holding the ring; or the ring
mentioned may be dispensed with and the plate and block made in one
piece and riveted or secured to the plunger. Any kind of spring can be
used, and two or more springs can be used instead of one.
filed by the said Edward Gatwood and George Spencer in the Great
: Seal Patent Office on the 7th October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, EDWARD
GATWOOD, Engineer, of Hardwick House, Easton Road; Bristol, and
GEORGE SPENCER, Engineer, of 77, Cannon Street, London, send
greeting.
-
· WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of April, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Edward Gatwood and George Spencer,
Her special licence that we, the said Edward Gatwood and George
Spencer, our executors, administrators, and assigns, or such others as
we, the said Edward Gatwood and George Spencer, our executors,
administrators, and assigns, should at any time agree with, and no others,
from time to time and 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

page_text: Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN THE CASES
FOR BUFFER SPRINGS," upon the condition (amongst others) that we, the
said Edward Gatwood and George Spencer, our executors or. adminis-
trators, by an instrument in writing under our, 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 per-
formed, 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 we, the said Edward Gatwood and. George
Spencer, do hereby declare the nature of our said 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 the cases for buffer springs consists
in certain methods of constructing the cases of such buffers so that the
centre rod used for guiding the spring, instead of working through the
headstock, as is generally done, is made to work inside the head of the
plunger. To accomplish this purpose we place in the head of the
plunger a block of wood or metal having a hole in the centre for the rod
to work in, or we provide a projection round the inside of the plunger,
against which block or projection we place a strong iron plate, through a
hole in the centre of which passes the rod with its head working in the
hole of the block of wood or metal for guiding the spring and for holding
the plunger and base together. To retain such plate in position we rivet
or fasten to the inside of the plunger a ring of metal; by this means the
plate is secured in position, or the plate and ring may be made in one,
the block of iron or wood being used, as mentioned, to take the thrust,
but we prefer that the ring and plate should be separate so as to prevent
strain on the rivets holding the ring; or the ring may be dispensed
with and the plate and block made in one piece and riveted or screwed
to the plunger. Any kind of spring can be used, and two or more
springs can be used instead of one.
To make our Invention clear we have given a Drawing showing two
systems of buffers in which our improvements are shown.
Fig. 1 is a wrought-iron buffer with india-rubber spring made accord-
ing to George Spencer's Patent, No. 168, dated Jany. 18th, 1866, but
steel or any suitable elastic spring may be used instead.
:

page_text: Fig. 4 SHOWS the mode. · dispensing WYKULL HO
Fig. 1..
In witness whereof, I, the said. George Spencer, have hereunto
set my hand and seal, this. Seventh day of October, in the year.
of our Lord One thousand eight hundred and seventy-four.
GEORGE (L.S.) SPENCER.