An Improvement in Cee Springs.
Year: 1892

page_text: Date of Application, 18th Feb., 1892
Complete Specification Left, 20th Oct., 1892-Accepted, 26th Nov., 1892
PROVISIONAL SPECIFICATION.
An Improvement in Cee Springs.
I, PIERRE NORBERT BELVALLETTE of 24, Avenue des Champs-Elysées Paris,
France, Carriage Builder, do hereby declare the nature of this invention to be as
follows:-
My invention relates to an improved spring designed more particularly for
suspending vehicle bodies, but applicable generally as a means of support or
suspension. My improved spring is of the type known as a "Cee" spring, but is
distinguished from those heretofore made by such an arrangement of the leaves or
plates of which it is composed that they co-act instead of counteracting each other
as occurs in "Cee" springs made in the usual way. Ordinary "Cee "springs are
formed of leaves or plates superposed in such manner that the uppermost leaf for
example constitutes the lower point of attachment of the spring while the lower-
most leaf carries the upper point of attachment, the successive leaves being arranged
stepwise and owing to their length requiring to be held by rivets or straps at two
points, in consequence of which the flexibility of a great portion of the spring is
destroyed especially at the part where it is unnecessarily strong as between these
two points the leaves of the spring can only counteract each other's play.
The disadvantages incidental to the "Cee" spring as usually made are entirely
obviated by the improved construction of spring of my invention which I have
illustrated in longitudinal elevation in the accompanying drawing, forming part of
this Specification.
The spring is constructed of a principal strip or plate a extending the whole
length of the spring with which are combined two distinct sets of superposed
leaves bc, acting independently of each other, placed at opposite sides and at
different points in the length of the strip a, that is to say the leaves b being placed
at the underside of the main strip a and resembling the lower half of an ordinary
elliptic spring, while the leaves c are placed within the curve of the upper end of
the strip a.
Each of the sets of leaves b c is connected to the main strip a at but a
single point d which is sufficient to hold the leaves in place, so that the spring
remains freely flexible throughout its length; the load to be supported puts all the
leaves in tension, and the points of resistance are presented in the direction of the
principal strains.
The form, dimensions, and number of the elements of which the spring is
composed would vary according to the weight to be supported or the purpose to
which it is to be applied. The spring may either be employed alone or in com-
bination with an ordinary elliptic spring as in the case of other "Cee" springs.
Dated this 18th day of Fahru 180
P. N. BELVALLETTE,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.
COMPLETE SPECIFICATION.
An Improvement in Cee Springs.
I PIERRE NORBERT BELVALLETTE of 24 Avenue des Champs-Elysées, Paris,
France, Carriage 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:-
My invention relates to an improved spring designed more particularly for
.

page_text: suspending vehicle bodies, but applicable generally as a means of support or suspension.
My improved spring is of the type known as a "Cee" spring, but is distinguished
from those heretofore made by such an arrangement of the leaves or plates of which
it is composed that they co-act instead of counteracting each other as occurs in
"Cee" springs made in the usual way. Ordinary "Cee" springs are formed of
leaves or plates superposed in such manner that the uppermost leaf for example
constitutes the lower point of attachment of the spring while the lowermost leaf
carries the upper point of attachment, the successive leaves being arranged stepwise
and owing to their length requiring to be held by rivets or straps at two points, in
consequence of which the flexibility of a great portion of the spring is destroyed
especially at the part where it is unnecessarily strong as between these two points
the leaves of the spring can only counteract each other's play.
The disadvantages incidental to the "Cee" spring as usually made are entirely
obviated by the improved construction of spring of my invention which I have
illustrated in longitudinal elevation in the drawing accompanying my Provisional
Specification.
The spring is constructed of a principal strip or plate extending the whole
length of the spring with which are combined two distinct sets of superposed
leaves c, acting independently of each other, placed at opposite sides and at
different points in the length of the strip a, that is to say the leaves & being placed
at the underside of the main strip a and resembling the lower half of an ordinary
elliptic spring, while the leaves c are placed within the curve of the upper end of
the strip a.
Each of the sets of leaves b c is connected to the main strip a at but a
single point d which is sufficient to hold the leaves in place, so that the spring
remains freely flexible throughout its length, the load to be supported puts all the
leaves in tension, and the points of resistance are presented in the direction of the
principal strains.
The form, dimensions, and number of the elements of which the spring is
composed would vary according to the weight to be supported or the purpose
to which it is to be applied. The spring may either be employed alone or in
combination with an ordinary elliptic spring as in the case of other "Cee" springs.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is.
A "Cee" spring constructed of a main curved strip a in combination with two
sets of superposed leaves be placed at opposite sides of and at different points
in the length of the said strip a, the one set being placed beneath the main
strip and the other set within the curve of the main strip and each set being
attached to the main strip at a single point, substantially as hereinbefore described
and for the purpose specified.
11
تيمم
1
1000
P. N. BELVALLETTE,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.