Improvements in Pneumatic Saddles for Cycles.
Year: 1893

page_text: Date of Application, 20th Feb., 1893
Complete Specification Left, 20th Nov., 1893-Accepted, 20th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Saddles for Cycles.
We, THOMAS GUTHRIE, Painter of 3 Thorney Terrace and WILLIAM THOMAS
HALL, Schoolmaster of 1 Whitburn Terrace both in South Shields in the County
of Durham, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in pneumatic saddles for cycles and
consists in the provision in combination with the leather or other saddle casing
having a fixed central ventilating cylinder or opening therein of an inflation bag
adapted for insertion or extraction to or from such casing through a laced or
otherwise fastened slit provided therein such inflation bag being specially manu-
factured of the general form of the casing which it is intended to fill but divided or
split across a certain line so as to permit of its being got round the ventilating
opening aforesaid.
The division may run radially from a point in the circumference of the
ventilating cylinder to a point at the outside of the casing the ends of the inflation
bag being blocked to come into close contact when inflated.
Dated this 25th day of March 1893.
A. CRAWHALL CHAPMAN,
Newcastle-on-Tyne, Agent.
Improvements in Pneumatic Saddles for Cycles.
We, THOMAS GUTHRIE Painter of 3 Thorney Terrace and WILLIAM THOMAS
HALL Schoolmaster of 1 Whitburn Terrace both in South Shields in the County
of Durham 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 pneumatic saddles for cycles and
consists in the provision in combination with the leather or other saddle casing
having a fixed central ventilating cylinder or opening therein of an inflation bag
adapted for insertion or extraction to or from such casing through a laced or
otherwise fastened slit provided therein, such inflation bag being specially manu-.
factured of the general form of the casing which it is intended to fill but divided or
split across a certain line so as to permit of its being got round the ventilating
opening aforesaid.
The division may run radially from a point in the circumference of the
ventilating cylinder to a point at the outside of the casing the ends of the inflation
bag being blocked to come into close contact when inflated.
We will fully describe our invention with reference to the accompanying drawing
which shows a plan view of a cycle saddle having a fixed central ventilating
cylinder or opening O therein.
The external casing C of the saddle, which may preferably be constructed of
leather, is provided with a slit S of sufficient size to admit of the easy insertion or
extraction of the internal inflation bag B which we form of a shape adapted to
correspond to the internal shape of the external casing and in order to effect this
purpose we split the air bag B across a certain line, it may be line A A or line A' A¹
or line A2 A all of which lines preferably radiate from the centre of the ventilating

page_text: opening O and the two ends of the air bag so split are then blocked so as to come
into close contact with each other when inflated and in position within the saddle
casing as shown at A' A' in the drawing.
When inserting an air bag constructed as described into its position within the
saddle casing through the slit S, it will be found quite easy to work it by hand into
the parts of the casing remote from the slit and to get it round the fixed ventilating
opening O and then to get the two blocked ends into close contact, when the slit
can be secured by lacing, buttoning, stitching or otherwise. In like manner it will
be found quite easy to extract an air bag constructed as described. The air bag B
may be inflated by means of an inflation valve connected to a pump in the usual
way. The valve may be arranged on the bag in any suitable position.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In pneumatic saddles having fixed central ventilating openings, the use of an
air bag for inflating the saddle constructed of a form adapted to correspond to the
internal form of the external casing but having a blocked joint therein as at
A A or AA or A2 A2 so as to permit of the air bag being easily inserted or
extracted from the saddle casing substantially as herein described..
2. In pneumatic saddles having fixed central ventilating openings an air bag
constructed and adapted for use substantially as herein set forth.
Dated this 18th day of November 1893.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.