IMPROVEMENTS IN SPRINGS FOR CARRIAGES AND OTHER PURPOSES
Year: 1870

page_text: LETTERS PATENT to William Edward Newton, of the Office for Patents,
66, Chancery Lane, in the County of Middlesex, Civil Engineer,
for the Invention of "IMPROVEMENTS IN SPRINGS FOR CARRIAGES AND
OTHER PURPOSES." -A communication from abroad by Andrew Jackson
Dexter, of North Foster, in the State of Rhode Island, United
States of America.
Sealed the 17th May 1870, and dated the 23rd February 1870.
PROVISIONAL SPECIFICATION left by the said William Edward Newton
at the Office of the Commissioners of Patents, with his Petition,
on the 23rd February 1870.
I, WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery
Lane, in the County of Middlesex, Civil Engineer, do hereby declare.
the nature of the said Invention for "IMPROVEMENTS IN SPRINGS FOR
CARRIAGES AND OTHER PURPOSES," to be as follows:-
This Invention has for its object to construct for carriages and other
purposes an improved spring which shall be so constructed as to be
equally elastic whether subjected to a light or heavy pressure. The

page_text: improved spring consists of a coiled spring plate, the middle part of
which is made thick, strong, and heavy, while the other parts taper or
become gradually thinner or lighter towards one or both ends. By
this construction the spring when subjected to a light pressure will
yield in its light or thin end or ends, and when subjected to a heavy
pressure the lighter part or parts will be closed up more or less, according
to the amount of pressure, and the elasticity will be obtained from the
heavier part of the spring. When used for a carriage spring the spring
plate is coiled around a post the lower end of which is rivetted or
otherwise firmly attached to or formed upon a plate which is bolted
to the bolster of the carriage. The outer end of an arm (the inner end
of which has a hole formed through it to receive the post and move
up and down upon it) is bolted to the bed of the carriage body. The
side of the cylindrical case containing the spring is slotted to receive
the arm and allow it to move up and down freely:
the case rests upon a plate, and upon its upper end is
which is kept in place by a nut on the end of the post. It will be
evident that this construction of taper spring may be employed for various
other purposes where the kind of clasticity above mentioned is required,
such, for instance, as in weighing machines.
The lower end of
placed a washer
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Edward Newton in the Great Seal Patent
Office on the 22nd August 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of February, in the
year of our Lord One thousand eight hundred and seventy, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, 'the said William Edward Newton, Her special
licence that I, the said William Edward Newton, my executors, adminis-
trators, and assigns, or such others as I, the said William Edward Newton,
my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter

page_text: during the term therein expressed, should and lawfully might make,
usc, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN SPRINGS FOR CARRIAGES AND OTHER PURPOSES," being a com-
munication to me from abroad by Andrew Jackson Dexter, of North
Foster, in the State of Rhode Island, United States of America, upon
the condition (amongst others) that I, the said William Edward Newton,
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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Edward Newton, 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, reference being had to the Drawing
hereunto annexed, and to the letters and figures marked thereon
(that is to say):—
This Invention has for its object to construct for carriages and other
purposes an improved spring which shall be so constructed as to be
equally elastic whether subjected to a light or heavy pressure.
The improved spring is shewn in the accompanying Drawing, in
which Fig. 1 is a sectional view thereof, and Fig. 2 is a plan view.
It consists of a coiled spring plate, the middle part of which is made
strong and heavy, while the other parts taper or become gradually thinner
or lighter towards one or both ends. By this construction the spring A
when subjected to a light pressure will yield in its light or thin end or
ends, and when subjected to a heavy pressure, the lighter part or parts
will be closed up more or less according to the amount of pressure,
and the elasticity will be obtained from the heavier part of the spring.
When used for a carriage spring the spring plate A is coiled around a
post B, the lower end of which is rivetted or otherwise firmly attached to
or formed upon a plate C which is bolted to the bolster of the carriage;
D is an arm, the inner end of which has a hole formed through it to
receive the post B so that the arm D may move up and down upon it.
The outer end of the arm D is bolted to the bed of the carriage body.
E is a cylindrical case, the side of which is slotted to receive the arm