Improvements in Spring Seats and Backs for Chairs, Sofas, Oushions, and the like.
Year: 1896

page_text: Date of Application (in United Kingdom), 14th May, 1896
Complete Specification Left, 14th May, 189.-Accepted, 24th Oct., 1896
COMPLETE SPECIFICATION.
Improvements in Spring Seats and Backs for Chairs, Sofas, Oushions,
and the like.
I, JULES COMPIN, of Montargis (Loiret) in the Republic of France, Merchant,
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 to an improved method of constructing chairs sofas
cushions and the like, in which leaf springs are employed the method being
applicable to all kinds of seats, chairs, benches and the like as well as to the backs
of seats.
In order to give a clear idea of the invention, I have shown a seat constructed
in accordance therewith in the accompanying drawings.
Figure 1 is a sectional elevation of a portion of a bench or seat.
Figure 2 is an underside plan of the seat, and
Figure 3 is a transverse section of the same.
In these three figures similar letters refer to similar parts.
The leaf springs a are placed parallel to one another, and each spring is
preferably fixed by one of its extremities 6 to the frame c of the bench or seat,
while the other, suitably bent, movable extremity d is arranged to engage with an
appropriate sleeve or eyelet e, mounted on a stud or rod f, around which a spiral
spring g is placed.
It will be evident that when a pressure is exerted upon the bulged or convexed
part of the leaf springs a, the movable extremities d thereof engaging with the
sleeves e will slide along the rods f and compress the spiral springs g. As soon
as the pressure ceases, the springs g will return the leaf springs a to their original
position.
The bench or seat thus constructed is not only very elastic, but has its elasticity
so distributed that the part acted on does not react upon the other parts of the
bench or seat in the manner usual with seats constructed according to methods
hitherto used.
In order that a variable elasticity may be obtained, the spiral springs are
made more or less powerful so as to offer more or less resistance to compression.
The leaf springs may of course be made movable at both of their extremities;
in this case one or more spiral springs would be arranged to act upon each of these
extremities in the manner described.
The covering arranged upon the top surface of the leaf springs may be of any
suitable kind.

page_text: 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 use of flat or leaf springs having their suitably bent free extremities
arranged to slide upon studs or rods, around which spiral springs are placed so as
to be compressed when a pressure is exerted upon the leaf springs, the said leaf
springs being returned by the spiral springs to their original positions when the
pressure ceases, substantially as hereinabove described with reference to the
accompanying drawings and for the purposes specified.
Dated this 14th day of May 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.