IMPROVEMENTS IN SPRINGS FOR THE SADDLES OR SEATS OF BICYCLES, TRICYCLES AND OTHER VELOCIPEDES
Year: 1884

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PROVISIONAL SPECIFICATION.
I JOHN HARRINGTON of "The Enamel and Cradle Spring Works" Coventry in
the County of Warwick do hereby declare the nature of the said Invention for
IMPROVEMENTS IN SPRINGS FOR THE SADDLES OR SEATS OF BICYCLES, TRICYCLES
AND OTHER VELOCIPEDES to be as follows:-
.
The invention has for its object to give to the seat of a bicycle, tricycle or other
velocipede a firm support which is at the same time sufficiently elastic to permit of
the seat moving in any direction as may be required for the ease of the rider.
This I effect by taking a length of metal of any suitable section, solid or hollow
and coiling the same into a helical single coned spring which I fix preferably to a
base plate which is dished or otherwise formed so as to permit of the free
movement of the several coils without the danger of the same bumping upon the
base plate.
The said spring is preferably fixed by its large end to the base plate and by its
small end to a plate which supports the seat.

page_text: I JOHN HARRINGTON of "The Enamel and Cradle Spring Works," Coventry in
the County of Warwick, Manufacturer do hereby declare the nature of my said
Invention for IMPROVEMENTS IN SPRINGS FOR THE SADDLES OR SEATS OF BICYCLES,
TRICYCLES, AND OTHER VELOCIPEDES, and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:
The Invention has for its object to give to the seat of a bicycle, tricycle or other
velocipede a firm support which is at the same time sufficiently elastic to permit
of the seat moving in any direction as may be required for the ease of the rider.
This I effect by taking a length of metal of any suitable section solid or hollow
and coiling the same into a helical single coned spring which I fix preferably to a
base plate which is dished or otherwise formed so as to permit of the free
movement of the several coils without the danger of the same bumping upon the
base plate.
1.
The said spring is preferably fixed by its large end to the base plate and by its
small end to a plate which supports the seat.
.3
11
I have represented my invention in the accompanying drawings, in 'which
Figures 1 and 2 represent two side elevations drawn at right angles to each other
and Figure 3 represents a plan.
: "
41
] .f 4 F
a represents, the spring which is made by coiling a length of metal. of any
suitable section, solid or hollow, into a helical single coned spring which I fix as
shown to a base plate 6 which is dished or otherwise formed so as to permit of a
free movement of the several coils without the danger of the same bumping upon
the base plate b.
The base plate b is fixed to the bicycle, tricycle or other velocipede in any
convenient manner. I prefer to fix the spring a by its large end to the base
plate b as shown and by its small end to a plate c to which the seat d'is fixed in
the ordinary or in any convenient manner...
The top and bottom coils of the spring a are fixed, respectively to the
plates cand b by rivets a¹ and at the parts where such coils begin to leave the
said plates I fix the same thereto by clips a³ in order to avoid weakening
the spring at such parts.
I would here remark that I am aware that a helically coiled spring has before
been employed as a spring for velocipede seats but in such case it was used in
combination with rigid vertical guides which prevented any lateral motion of the
seat and compelled it to move only in a vertical direction whereby the freedom of
action of the spring was considerably curtailed and the guides were liable to bind
when subjected to a sideway pressure. I would also remark that in such former
use of a helically coiled spring the base plate to which it was fixed was formed flat
whereby, the spring was liable to bump upon the same. I therefore disclaim the
use of a helically coiled spring when combined with vertical guides and fixed to a
flat base plate as above.described.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is the improved velocipede seat spring consisting of a length of metal of

page_text: any suitable section, solid or hollow, coiled into the form of a helical single-coned
spring a independant of guides and fixed at its base to a dished plate b or its
equivalent and at its top to a plate c carrying the seat substantially as herein
shown and described and for the purpose stated.
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