Improvements in Carriage Springs.
Year: 1891

page_text: Date of Application, 7th Mar., 1891
Complete Specification Left, 7th Dec., 1891-Accepted, 9th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Carriage 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:-
It is well known that carriages or public conveyances run easiest when fully
loaded, as the flexibility or elasticity of the springs is reduced to its lowest point,
and the object of the present invention is to permanently reduce the elasticity of
the springs to such a point, irrespective of the number of occupants of the vehicle,
so that the inconvenience to the occupants arising from an excess of elasticity, will
be avoided.
In carrying out my invention, I adapt to the concave side of the spring, a strong.
straight, rigid bar or plate, which, at its ends, may bear direct, or through the
intermediary of spiral springs, against the top plate of the spring.
This bar is secured to the carriage spring by the ordinary clip, and as the clip is
tightened up, the spring is drawn towards the bar, and is caused to flatten out to
the requisite degree to accord with the full load.
In this way, whatever may be the load, the tension of the spring will always be
the same.
Dated this 5th day of Mauch 1001
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Carriage 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 :—
It is well known that carriages, or public conveyances, run easiest when fully
loaded, as the flexibility or elasticity of the springs is reduced to its lowest point,
and the object of the present invention is to permanently reduce the elasticity of
the springs to such a point, irrespective of the number of occupants of the vehicle,
so that the inconvenience to the occupants, arising from an excess of elasticity, will
be avoided.
In carrying out my invention, I adapt to the concave side of the spring, a strong,
straight, rigid bar or plate, which, at its ends, may bear direct, or through the
intermediary of spiral springs, against the top plates of the spring.
This bar is secured to the carriage spring by the ordinary clip, and as the clip is
tightened up, the spring is drawn towards the bar, and is caused to flatten out to
the requisite degree, to accord with the full load.
In this way, whatever may be the load, the tension of the spring will always be
the same.
In the accompanying drawing,
Figs. 1 and 2 shew one mode of carrying out my said invention.
Figs. 3 and 4 shew modifications of the same.
A is an elliptic carriage spring of the ordinary construction. B is a strong
rigid bar, which is preferably placed on the concave side of the upper half of the
spring. C is the ordinary clip by which the spring is secured to the carriage (seo
Fig. 2).

page_text: When this clip is tightened up, the upper plates of the spring are, so to speak,
forced down onto the bar B, and the plates being thereby flattened out, the excess
of elasticity of the spring is overcome.
In Fig. 3, strong spiral springs D are placed between the bar B, and the plates
of the spring.
In the modification shewn at Fig. 4, the bar B is dispensed with, but the same
effect is produced by means of the link pieces, straps, stays, or clips E, which
surround the opposite ends of the spring, and are attached to the carriage body and
the fore carriage, so that when tightened up, they will have the effect of flattening
out the plates, as before described.
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 1
claim is :-
The application to carriage springs of means whereby the elasticity of the
springs is permanently reduced, as and for the purpose set forth.
Dated this 7th day of December 1891.
NEWTON & SON,
Agents for the Applicant.