Improvements in Means for Inflating Pneumatic Tyres of Velocipedes and the like.
Year: 1897

page_text: Date of Application, 10th June, 1897
Complete Specification Left, 9th July, 1897-Accepted, 5th Feb., 1898
PROVISIONAL SPECIFICATION.
Improvements in Means for Inflating Pneumatic Tyres of Velocipedes
and the like.
ADOLPHUS SAVOLDELLI, Artist Bookgilder, G, Richmond Buildings, Soho.
London, W., do hereby declare the nature of this invention to be as follows:-
The invention consists of a very small pump in form of a curve 1 inches long
by of an inch in diameter, made in metal or other composition.
This pump is screwed to the wheel at the same place where the cyclist inflates
his tyres.
Its action is mechanical, and is worked by the cycle in motion.
Its operation is imperceptible to the rider and the size of the pump can be
varied.
In the accompanying drawings
The Figure A is a section of the form.
The piston which is fixed to the handle 6 must not go beyond the hole f; and
the interior space left between f and g must gradually taper so as not to present
more than a little hole at the extremity, of of an inch in diameter, (see g.)
The piston
ais kept in its place by means of a suitable spring, screwed to its
support 4; and the handle is formed with a knee joint B.
The opening facts as an inlet for the air when the piston leaves the tube and
the little hole at g is for the outlet of the air which enters the pneumatic tyre
of the cycle when the piston is pushed back by its spring.
For this purpose, the apertures and m are covered with a fine membrane
of india rubber or other suitable naterial which performs the duty of a valve.
These valves are fixed by means of a little screw.
The hole g will have its membrane attached to the outside of the pump (see d)
and the hole f, will have it attached on the inside; as this would be difficult to
adjust, a separate piece is provided which is of a round form, and screws into
the hole (see Figure 6).
At the bottom of this piece (sec) the said membrane is placed.
This round piece k, should have a very large opening at the top terminating
in a small hole at the bottom (see m) of the same size as the one at g (see
section E).
P. is a disc of india-rubber larger than the diameter of the pump; its outside
edge, is pressed between the ring S, and the circumference of the tube
(see G Figure G) and the piston passes through the hole in the centre . In
this way any leakage of air is impossible (see Z) and the hard contact of the two
metals is avoided, each time the pump is pushed back by its spring.
The pump is screwed on at the end C (Figure A) at the same place where the
cyclist inflates his tyre, (see D) and in an upright direction so that the end of the
handle b projects beyond the spokes of the wheel (see section F): and only
requires to meet with an obstacle to operate it regularly.
The obstacle is provided by placing a little bolt fixed to the fork R (see 1) of
the cycle, the end of which comes in contact with the end of the handle of the

page_text: piston (see Q g); and thus each time the wheel makes a revolution the little
pump passes and comes in contact with the bolt, (V) and the piston is forced out,
and falls back very quickly (Fig. G.).
It is an almost imperceptibly sharp movement of about part of a second,
during which a little blast of air enters directly into the tyre.
The extremity of the bolt of the fork, R. is Furnished with a roller (see 0
Figure L) of strong india rubber that turns on its axis so as to soften the con-
tact with the handle b.
A hole as small as a pins point
made in the pump, (see Figure A). This
hole is for the escape of air when the tyre is charged to its normal pressure.
Dated this 10th day of June 1897.
ADOLPHUS SAVOLDELLI,
Applicant.
Improvements in Means for Inflating Pneumatic Tyres of Velocipedes
and the like.
ADOLPHUS SAVOLDELLI, Artist Bookgilder, formerly of 6, Richmond Buildings,
Soho, W., now of 30, Gerrard Street, W., London, do hereby declare the nature
of this invention, and in what manner the same is to be performed, to be parti-
cularly described and ascertained in and by the following statement:-
The invention consists of a very small pump in form of a curve 1 inches long,
by of an inch in diameter, made in metal or other composition.
The Figure A in the drawing filed with the Provisional Specification is a section
of the form.
The piston a which is fixed to handle & must not go beyond the hole and the
interior space left between and must gradually taper so as not to present more
than a little hole at the extremity of of an inch in diameter-the piston must
fit exactly as possible and its extremity should be provided with a groove round its
diameter in which is wound some well greased thread.
מן
The piston is kept in its place by means of a suitable spring secured to its
support 4 and the handle is formed with a knee joint, so as not to offer resistance
when the machine goes backwards, and to remove the contact if the rider wishes.
The spring must not be too strong-In pressing the handle with the finger
it must push back piston gently, it should be a little thinner at the end which is
against the handle b.
The opening facts as an inlet for the air when the piston leaves the tube, and
the little hole at g is for the outlet of the air which enters the pneumatic tyre
For this purpose,
of the cycle, when the piston is pushed back by its spring.
the aperture and m are covered with a fine membrane of india rubber or other
suitable material which performes the duty of a valve. These valves are fixed by
means of a little screw-The membrane of the hole g must only be a little larger
than the hole. The piece must be round and have a projection on which to place
the screw.
The hole must be in form of a lozenge and the size must be equal to
the diameter of the same hole. The hole g will have its membrane attached to the
outside of the pump (see ) and the hole will have it attached on the inside.
As this would be difficult to adjust, a separate piece is provided which is of a
round form and screws into the hole (see Fig. C)-This round piece should
have a very large opening at the top terminating in a small hole at the bottom
(see m) of the same size as the one at y (see section E).
P, is a disk of india rubber, or other suitable material, larger than the diameter
of the pump.
Its outside edge is pressed between the ring S and the cir
cumference of the tube (see Fig. C) and the piston passes through the hole in

page_text: the centre .
This india rubber disk must be much thicker than the membranes:
and the hole in it must be a little smaller than the diameter of the piston.
Before putting it in its place (see G Fig. C) the space between the disk and the
mouth of the pump should be filled with grease. In this way any leakage of air
is impossible and the hard contact of the two metals is avoided, each time the
pump is pushed back by its spring.
The pump is screwed on at the end c (Fig. A) at the same place where the
cyclist inflates his tyres (see D) and in an upright direction so that the end of the
handle projects beyond the spokes of the wheel (see section F).
The diametrical face of the pump at the ende must be concave; as well as
the opposite end. This pump is worked by coming in contact with an obstacle;
which is provided for by placing a bolt fixed to the fork R (see f) of the cycle, the
end of which comes in contact with the end of the handle of the piston (see Q9)
and thus each time the wheel makes a revolution, the little pump passes and
comes in contact with the bolt (V) and the piston is forced out and falls back
very quickly. It is an almost imperceptible and sharp movement of about part
of a second, during which a little blast of air enters directly into the tyres.
The extremity of the bolt of the fork R should be furnished with a roller (see O
Fig. L) of strong india rubber, that turns on its axes; so as to soften the contact
with the handle b.
1
סאונ
A little hole as small as a pins point, is made in the pump (see Fig. A). This
hole is for the escape of air when the tyres are charged to its normal pressure
and when the cycle is going slowly it serves to keep up a regular operation of the
pump,the pump is constructed to supply all the requirements of pressure of
the pneumatic tyre.
The action of this small pump is mechanical; it is worked and supplies the tyres
with air, as the cycle moves by an automatic action.
The tube of the pump should be protected, by a fine metalic perforated case.
The pump can be applied to the cycle in a different manner and also the bolt of
the fork R can be used differently.
The proportion of the pump can be varied.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. A method of inflating the tyres of cycles and all other vehicles having pneu-
natic tyres by means of a small pump described as above, producing an inter-
mittent puff of air in proportion as it is necessary to keep the tyre charged with
the required pressure.
2. The method of operating the pump by the force transmitted at each turn of
the wheel by means of a catch striking a bar placed on an immoveable part of the
vehicle.
3. Obtaining these results automatically without any manipulation of the person
riding or driving the vehicle.
London. Dated this Tenth day of June 1897
ADOLPHUS SAVOLDELLI,
Applicant.