Improvements in Pumps for the Inflation of Pneumatic Tyres and for like purposes.
Year: 1899

page_text: Date of Application, 5th Aug., 1899
Complete Specification Left, 4th May, 1900-Accepted, 9th June, 1900
PROVISIONAL SPECIFICATION.
Improvements in Pumps for the Inflation of Pneumatic Tyres and for
like purposes.
I, HARRY LUCAS, Managing Director, of the Firm of Joseph Lucas Limited,
of "Tom Bowling" Lamp Works, Little King Street, in the City of Birmingham,
Manufacturers, do hereby declare the nature of this invention to be as follows:-
This invention consists of improvements in pumps for the inflation of pneumatic
tyres and for like purposes, and is more especially applicable to such pumps or
inflators having the barrel part constructed from celluloid.
The object of my invention is to adapt the outlet end of the barrel in a neater
and more effective manner than heretofore for connection with the ordinary
flexible tube through which the compressed air is conveyed to the pneumatic
tyre or other part to be inflated.
In the application of my invention to the construction of an air pump or
inflator 1or cycle purposes, I employ a plain celluloid tube for the barrel part and
insert within the same the ordinary plunger. The end of the barrel to which
the air tube is to be connected I flange or turn inwardly preferably by the
application of a suitable tool whilst the barrel is rotated in a lathe, after the
softening of the material by inserting it in hot water or otherwise.
Within the barrel I place a nut to receive the stem of a hollow bolt or metal
attachment piece which is inserted through the reduced aperture, formed by the
Hanging or turning in of the barrel end, and caused to screw into the nut on the
inner side. The head of the hollow bolt or attachment abuts against the outer
side of the barrel end, and is milled or so formed as to permit of the convenient
screwing of its stem part into the aforesaid nut until it is firmly clamped to the
barrel. The interior of the hollow stem is tapped or screwed to receive the
ordinary externally screwed projection from the flexible connecting tube.
My invention is also applicable to pumps or inflators having the barrel part
formed with aluminium or from a material that cannot be readily brazed.
1000
Improvements in Pumps for the Inflation of Pneumatic Tyres and for
like purposes.
I, HARRY LUCAS, Managing Director, of the Firm of Joseph Lucas Limited,
of "Tom Bowling" Lamp Works, Little King Street, in the City of Birmingham,
CD 871

page_text: Manufacturers, 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 consists of improvements in pumps for the inflation of pneumatic
tyres and for like purposes and is more especially applicable to such pumps or
inflators having the barrel part constructed from celluloid.
The object of my invention is to adapt the outlet end of the barrel in a neater
and more effective manner than heretofore for connection with the ordinary
flexible tube through which the compressed air is conveyed to the pneumatic
tyre or other part to be inflated.
to.
On the accompanying sheet of explanatory drawings to be hereinafter referred
Figure 1 is an elevation representing part of an inflator constructed in accord-
ance with my invention, and Figure 2 a similar view of the same but with
portions shown in section.
Figure 3 is a side elevation and Figure 4 an end elevation of the nut which
is secured in the interior of the barrel by the hollow bolt which is shown separately
in end and side elevation respectively at Figures 5 and 6.
The same reference letters in the different views indicate the same parts.
In the application of my invention to the construction of an air pump or
inflator for cycle purposes, I employ a plain celluloid tube as A for the barrel
part and insert within the same the ordinary plunger. The end a of the barrel
to which the air tube is to be connected I flange or turn inwardly, as shown,
preferably by the application of a suitable tool whilst the barrel is rotated in a
lathe, after the softening of the material by inserting it in hot water or otherwise.
Within the barrel I place a nut B to receive the stem of a hollow bolt or metal
attachment piece C which is inserted through the reduced aperture, formed by the
flanging or turning in of the barrel end a, and caused to screw into the nut B
on the inner side. The head of the hollow bolt or attachment C abuts against
the outer side of the barrel end, and is milled or so formed as to permit of the :
convenient screwing of its stem into the aforesaid nut B until the two parts are
firmly clamped to the barrel. The interior of the hollow bolt is tapped or screwed
to receive the ordinary externally screwed projection from the flexible connecting
tube.
My invention is also applicable to pumps or inflators having the barrel part:
formed with aluminium or from a material that cannot be readily brazed..
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. In pumps for the inflation of pneumatic tyres and for like purposes, the 4
combination with the inwardly flanged or turned in end as a of the barrel part A,
of a nut B and hollow bolt or attachment piece C, substantially as described and
as illustrated.
2. An air pump or inflator for cycle and like purposes, having the outlet end
adapted for connection with the air conveyance tube substantially in the manner 4
and for the purpose described.
Dated this 3rd day of May 1900.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, &
25, Cross Street, Manchester. Agents for the Applicant.