Improved Pneumatic Seats, Arms, and Rests.
Year: 1896

page_text: Date of Application, 10th Jan., 1896
Complete Specification Left, 30th May, 1896-Accepted, 29th Aug., 1896
PROVISIONAL SPECIFICATION.
Improved Pneumatic Seats, Arms, and Rests.
I LIZZIE DAWES 163 Camberwell Road London S.E. Lady do hereby declare the
nature of this invention to be as follows:-
1st Wood frames
The materials required are as follows
2nd India-rubber
bladders 3rd India rubber solution 4th Sheet india rubber 5th Strong canvas,
light leather or such like material 6th Ordinary canvas, 7th Final or outside
coverings, which articles are put together in the following manner. A piece of
sheet india-rubber same size & shape as frame is fastened by means of india-
rubber solution to & over frame (this piece of sheet india-rubber is then divided, &
laced together after the. manner of a football covering, through this aperture the
pneumatic bladder may be taken out, or replaced, & in case of puncture dismisses
the necessity of taking covering off seats). The pneumatic bladder is then slightly
inflated & placed on the top-of sheet india-rubber covering frames. Then a piece
of stout canvas, leather, or such like material of required width is tacked to the
outside edge of frame, which forms a strong collar around the pneumatic bladder.
It is then covered with an ordinary canvas covering & then inflated hard, so that
when the final or outside covering is put on, no weight brought to bear upon seat,
arm, or rest, puts undue presure, or tention, upon outside covering. The piece of
sheet india-rubber covering frame, acts as a spring when weight is brought to bear
upon seat, arm, or rest.
India rubber bladders may be made the exact size of frame, or from one to two
inches larger according to the height of inflation required, & all india-rubber
bladders that are intended for plain seats, arms, or rests, must have a centre hole
to give the evenness & exactness of inflation required. All bladders may be inflated
by means of the ordinary valves, placed in the inost convenient parts of bladder.
In producing buttoned seats, arms or rests, the bladders are made with tubes
runing through them where required, & the buttons are taken, (by means of string)
from outside covering through tubes, & fastened to the underpart of sheet india
rubber, by means of any button that will adhere to the sheet india rubber by means
of india-rubber solution.
Among many advantages the following are some
Cleanliness, lightness, dismissal of dust & dirt, comfort, &c.
COMPLETE SPECIFICATION.
Improved Pneumatic Seats, Arms, and Rests.
. I LIZZIE DAWES of 34 Ivanhoe Road Camberwell London, S.E. (late of
163 Camberwell Road London, S.E.) Lady, 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 improvements in the substitution of air cushions in

page_text: place of the present system of stuffing in seats arms or rests. First, there is
required a narrow wood frame, (which is made the exact shape & design required).
(These frames may vary in width from half an inch to two inches in ordinary sized
seats, arms, or rests but in large seats &c. such as couches or railway carriage seats,
they may be made three inches in width, as the narrower the frame the more
flexible the seat.) To & over this frame there is secured (by means of india-rubber
solution) a piece of sheet india-rubber (one thirty second) or 16 (one sixteenth)
of an inch in thickness, according to the size of seat, & which is secured in the
following manner. The india-rubber solution is put upon one side of the narrow
wooden frame, & upon one side of a corresponding width of the sheet india-rubber
from the edges, (the sheet india-rubber being the same shape & size as the frame)
& after exposure to the atmosphere for about thirty minutes, they will firmly
adhere when brought together. This sheet india-rubber is then divided in the
centre, forming an aperture, through which the air cushion may be extracted or
replaced in case of puncture. The edges of this aperture are strengthened by a
narrow strip of air proof cloth, or any other suitable non-elastic material, which
will adhere to them by means of the india-rubber solution, in the manner described.
This aperture is then laced together after the manner of a football covering.
The sheet india-rubber covering narrow frame carries the air cushion, & acts as
a spring when weight is brought to bear seat, arm, or rest.
The air cushion which forms the interior of seat, arm, or rest (& which has the
usual neck & valve placed in the most convenient part for the purpose of inflation or
deflation) is then placed upon the top of sheet india-rubber & slightly inflated.
Then a piece of stout canvas, light leather, or such like material of required width,
is secured by means of small tacks to the outside edge of frame, which forms
a strong collar around the air cushion & keeps it in its place. It is then covered
in the ordinary manner, first with an ordinary canvas covering, & secondly with
the final or outside covering. All air cushions intended for plain seats, arms,
or rests (not buttoned) are made in the usual way of having a hole in the centre of
cushion, which gives the exactness & evenness of inflation required. In the case of
buttoned seats, arms, or rests, these are produced by the usual means of tubeing
passing through the air cushion where required, so as to allow the buttons to
be taken from the outside of final covering to the underside of sheet india-rubber
covering frame, & may be fastened to the sheet india-rubber by means of any
button that will adhere to it by means of india-rubber solution in the way
described.
Now I wish it to be particularly understood that I do not claim any particular
design or method of making air cushions whether intended for plain or buttoned
seats.
In order that my invention may be thoroughly understood I annex drawings.
Fig. 1 represents section of seat showing the following.
A Narrow frame.
B Sheet india-rubber secured to narrow frame.
.C India-rubber solution securing sheet india-rubber to narrow frame.
D Half section of air cushion resting on sheet india-rubber.
E Laced aperture in sheet india-rubber.
F Collar around air cushion.
G Canvas covering.
H Final or outside covering.
1 Valve for inflation or deflation.
Fig. 2 represents plan of bottom of seat showing the following
Narrow frame & sheet india-rubber with laced aperture.
Having now particularly described and ascertained the nature of my said inven-
tion, & in what manner the same is to be performed, I declare that what I
' claim is.
The mode of making pneumatic seats, arms, & rests, first by carrying an inflated

page_text: cushion supported upon a piece of sheet india-rubber, the said sheet india-rubber-
secured to a narrow frame. Second The air cushion kept in place by a collar
attatched to the outside edge of frame, substantially as described and illustrated.
Dated this Twenty-ninth day of May 1896.
LIZZIE DAWES.