Improvements in Pneumatic Saddles for Cycles.
Year: 1893

page_text: Date of Application, 18th Oct., 1893
Complete Specification Left, 18th July, 1894-Accepted, 13th Oct.,
1894
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Saddles for Cycles.
I, JOHN PARR JOHNSTON of 8, Rosemount Road, North Circular Road,
Dublin, Gentleman, do hereby declare the nature of this invention to be as
follows:-
This invention relates to an improved air bag for pneumatic saddles, intended to
provide a bag which will retain the shape desired when inflated, and also provide
thorough ventilation.
Pneumatic saddles as heretofore constructed have, when inflated, a tendency to
rise and form a lump or ridge at about the middle, or at the back of the narrow
front part or peak. This ridge which projects up between the legs of the rider in
front, renders the riding uncomfortable, especially as the pressure on the rear part
of the saddle increases the size of the ridge. I obviate this disadvantage by
forming the bag at this point with a hole or perforation similar to that commonly
furnished at the rear for ventilating purposes, but smaller. This hole will also
provide additional ventilation, the cover and base being perforated in corre-
sponding positions, but its main purpose is to render the form of the saddle more
regular. Even when the saddle is highly inflated, the surface will be quite even
and regular, thus ensuring that the saddle be perfectly comfortable in riding.
To provide for further ventilation, I may also construct the air bag with two
small perforations at the rear, on either side of the central hole, thus giving four
ventilating holes at the most convenient points. The cover and base will of course
be also perforated at these points.
To form the holes a tube of rubber or canvas and rubber is inserted and
cemented to the top and bottom of the bag, the air thus surrounding the tube or
perforation.
Dated this 18th day of Ontabon 1902
GEO. H. RAYNER,
37, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Saddles for Cycles.
I JOHN PARR JOHNSTON of 8, Rosemount Road, North Circular Road,
Dublin, Gentleman, 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 air bag for pneumatic saddles, intended to
provide a bag which will retain the shape desired when inflated, and also provide
thorough ventilation.
Pneumatic saddles as heretofore constructed have, when inflated, a tendency to
rise and form a lump or ridge at about the middle, or at the back of the narrow
front part or peak. This ridge which projects up between the legs of the rider in
front, renders the riding uncomfortable, especially as the pressure on the rear part
of the saddle increases the size of the ridge. I obviate this disadvantage by
forming the bag at this point with a hole or perforation similar to that commonly
furnished at the rear for ventilating purposes, but smaller. This hole will also

page_text: provide additional ventilation, the cover and base being perforated in corresponding
positions, but its main purpose is to render the form of the saddle more regular.
Even when the saddle is highly inflated, the surface will be quite even and regular,
thus ensuring that the saddle be perfectly comfortable in riding.
To provide for further ventilation, I may also construct the air bag with two
small perforatious at the rear, on either side of the central hole, thus giving four
ventilating holes at the most convenient points. The cover and base will of course
be also perforated at these points.
To form the holes a tube of rubber or canvas and rubber is inserted and
cemented to the top and bottom of the bag, the air surrounding the tube or
perforation.
In order that the invention may be more clearly understood, reference is had to
the accompanying drawings, in which Fig. 1 is a plan of the air bag, and Fig. 2 is
a longitudinal section.
Besides the ordinary central hole A in the air bag B, which is of the usual
shape and size and furnished with the valve b for inflation, the bag is provided with
the perforation a at the neck or beginning of the peak, preventing the rising or
bulging at that point as above described, and allowing better ventilation to be
obtained. On each side of the hole A is placed the perforation a' for ventilating
purposes, and also to give a better shape to the saddle when inflated, preventing
too much bulging at the sides. The arrangement of holes shown will also
effectually prevent the saddle sticking or clinging to the rider while pedalling.
The holes are formed with the canvas strips C around their circumference to
strengthen them and help to keep the holes open. Instead of canvas, leather wire
or other suitable material may be employed serving the same purpose.
The drawings show the air bag only, but it is intended to use a cover of leather
or other suitable material moulded to the required shape, the air bag filling this
when inflated, as in well known pneumatic saddles.
Having now particularly described and ascertained the nature of ny said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1.) An improved air bag for pneumatic saddles having in addition to the
ordinary central ventilating hole a suitably formed perforation in the neck for the
purpose of preventing the rising at that point, substantially as described and shown.
(2.) An improved air bag for pneumatic saddles, having in addition to the
ordinary ventilating hole, a similar perforation in the neck, and a perforation on
each side at the rear substantially as and for the purposes specified.
(3.) The improved air bag for pneumatic saddles having four holes formed and
arranged substantially as described and shown in the accompanying drawings and
for the purpose specified.
Dated this 18th day of July 1894
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.