Improvements relating to Carriage and other Springs.
Year: 1891

page_text: Date of Application, 29th Nov., 1891
Complete Specification Left, 20th Aug., 1892-Accepted, 24th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements relating to Carriage and other Springs.
I WILLIAM EASTGATE of the Eagle Carriage Works, 21 Newman Street,
Oxford Street, London, Coach Builder, do hereby declare the nature of this
invention to be as follows:-
This invention relates more particularly to the mode of connecting together the
top and bottom plates of an elliptic carriage spring, but the invention is capable of
application to other springs, the objects of the invention being to obtain greater
elasticity than heretofore at the connection, improved durability of the india rubber
used, to facilitate the putting together of the parts, and otherwise promote the
efficiency of the connection.
In carrying out my invention, I form the india rubber cylinder with a bolt hole"
of larger dimensions than usual, placed excentrically, so that when placed in the
bottom eye of the lower plate, the bearing portion, which is also the wearing
portion, shall be thicker than heretofore, and greater elasticity is thus obtained.
This rubber cylinder I place upon a metal sleeve having at either end a slightly
conical disc, like a cotton reel. One of these discs is preferably made in one with
the sleeve, and the other is screwed on when the rubber has been fitted to it, for
which purpose the free end of the sleeve is threaded.
By this means, the insertion of the rubber in the eye is facilitated, as the
diameter of the rubber, in its normal condition, need not exceed that of the eye,
and the length being slightly longer, the screwing up of the disc will compress the
rubber, and cause it to spread out and fill up the eye, the conical faces of the disc
serving to effect this purpose.
•
The loop head will be secured to the bottom eye by a bolt, which will pass
through the sleeve, and receive a nut on its free end in the usual way.
Dated this 20th day of November 1891
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements relating to Carriage and other Springs.
I WILLIAM EASTGATE of the Eagle Carriage Works, 21 Newman Street,
Oxford Street, London, Coach Builder, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention relates more particularly to the mode of connecting together the
top and bottom plates of an elliptic carriage spring, but the invention is capable of
application to other springs, the objects of the invention being to obtain greater
elasticity than heretofore at the connection, to improve the durability of the india
rubber used, to facilitate the putting together of the parts, and otherwise to
promote the efficiency of the connection.
In the accompanying drawing
Fig. 1 is a side view of one end of an elliptic spring with my invention applied
thereto.
Hio is a ton view

page_text: "
A is the top plate, and B is the lower plate of the elliptical spring.
The end of A is forked, and has a bolt hole through it, this part being termed the
loop head."
The end of B is turned over to form what is termed the "bottom eye," which,
when in position, fits into the "loop head."
C is a cylinder of india rubber, formed with an excentric hole, as seen in Fig. 6.
The thickest portion of the rubber, when placed in the bottom eye, is below, as seen
at Fig. 3, thus forming a thick cushion on which the connecting bolt will rest,
thereby preventing jar.
D is a sleeve which is provided with conical ends or discs D', one or both of
which is or are detachable.
When making up the elliptic spring, the rubber C is placed in the bottom
eye B, the sleeve D is inserted in the rubber, and the conical ends or die D' are
screwed up.
The rubber cylinder may be slightly longer than the width of the eye, so that,
by screwing up the ends D', the rubber will be compressed longitudinally, and
caused to expand laterally, and completely fill up the eye, the sleeve ends over-
lapping and forming, with the eye, a closed box to contain the rubber.
The bottom eye is then placed in the loop head, and the two parts are secured
together by a bolt and nut, as shewn at Figs. 1 and 2.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. The mode as herein shewn and described of connecting together the parts of
springs for the purpose set forth.
2. In connecting the parts of springs, the use of a rubber cylinder formed with
an excentric bolt hole arranged as and for the purpose set forth.
Dated this 19th day of August 1892.
NEWTON & SON,
Agents for the Applicant.