Improvements in Inflaters or Hand Air Pumps for Inflating Pneumatic Tyres and other Like Purposes.
Year: 1891

page_text: eprinted as amended in accordance with a further decision of the Comptroller-
General, dated the 26th day of February 1900.
PROVISIONAL SPECIFICATION.
Improvements in Inflaters or Hand Air Pumps for Inflating
Pneumatic Tyres and other Like Purposes.
We, WILLIAM BOWN, of 308, Summer Lane, Birmingham, in the County of
Warwick, Manufacturer, and GEORGE CAPEWELL, of 114, Upper Thomas Street, Aston,
juxta Birmingham aforesaid, Machinist, do hereby declare the nature of this inven-
tion to be as follows:-
This invention has reference to inflaters or hand air pumps or pocket pumps
specially for inflating pneumatic tyres for cycle wheels, and for other like purposes,
the objects of which are to reduce the size of the inflater or pump and at the same
time to increase the power of the pressure of air; to facilitate the return action of
the piston and piston rod, and also to provide better means for securing the nozzle of
the inflater in the mouth-piece or opening of the article which it is intended
to inflate, and lastly in providing means whereby the said inflater may be used for
carrying requisites such as are used by cyclists and in reducing the cost of
manufacture.
Our improvements consist in providing two or more cylinders preferably joined or
connected together side by side and provided with a like number of suitable pistons
and piston rods either tubular or otherwise, the said piston rods are by preference
connected or joined together at their top ends by a link, stay or other suitable
connection, the said link, stay or other suitable connection being provided with a
folding, sliding or detachable handle or handles or their equivalent, or the said handle
or handles may be made tubular or bent into any desired shape so as to slide or take
over the outer surface of the cylinder or cylinders when the piston rod is at the bottom
of its stroke.
Instead of pumping the air out of the two cylinders through one outlet we may
when desired form one cylinder with an outlet into the other cylinder, and provide
the said outlet with a suitable check valve for preventing the air from returning.
For the purpose of facilitating the upward stroke of the piston or pistons we attach
or connect to any convenient part of the piston rod or rods but by preference at the
top of the said piston rod or rods a suitable valve or valves. In order to securely
hold the nozzle of the inflater in the mouth or opening of the article which is being
inflated we attach or connect to the said nozzle or to any other convenient part of
the inflater a ring or other suitably shaped holdfast, held in position by a spring or
other means.
We may if desired dispense with the link or other connection which joins the piston
rods together and actuate each piston separately.
To reduce the cost of manufacture we stamp or press the top end or cover of the

page_text: cylinder and also the bottom end and nozzle out of sheet metal into the desired
shape, or a combination of sheet metal and tubing, or other suitable material.
Parts of these improvements are also applicable to single cylinder inflaters or hand
pumps.
Improvements in Inflaters or Hand Air Pumps for Inflating
Pneumatic Tyres and other Like Purposes.
We, WILLIAM BOWN, 308, Summer Lane, Birmingham, in the County of Warwick,
Manufacturer, and GEORGE CAPEWELL, of 114, Upper Thomas Street, Aston, juxta
Birmingham aforesaid, Machinist, 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 has reference to inflaters or hand air pumps or pocket pumps
specially for inflating pneumatic tyres for cycle wheels, and for other like purposes,
the object of which is to reduce the size of the inflater or pump.
In order that our invention may be more clearly understood we have annexed the
accompanying sheet of drawings.
Fig. 1 is a plan view of an inflater or hand air pump. constructed according-to-our-
invention.
Fig. 2 is an end view of Fig. 1.
Fig. 3 is a similar view to Fig. 1 shewing a-modification-of our-invention, another
form of hand air pump.
In Figs. 4, 5 and 6 we have shewn other hand air pumps, Fig. 5 being that which
we claim further modifications-of-our-invention.
A and B are the two cylinders preferably joined or connected together side by side
with the double flanges C and D and provided with a like number of suitable pistons
and piston rods either tubular or otherwise. The said piston rods are by preference
joined together at their top ends by the stay E, or they may be joined together by a
link or other suitable connection. F is the detachable handle which is hinged at a to
the stay E, so that the said handle F will fold over and rest upon the cylinders A
and B thus enabling the inflater to occupy a very small space. In order to fasten the
handle F to the stay E when using the inflater we form a slot or opening b in the said
stay E, see Fig. 2. The T shaped piece c or its equivalent which is fastened to the
said handle F passes through the said slot b and by turning the handle F the said
T shaped piece c securely fastens the said handle F to the said stay E. Fig. 3 shews
another form of detachable handle. In this case the handle F is screwed into the
stay E, and when the said handle F is detached it is screwed into a suitable socket
formed on the flange D) as shewn in dotted lines. Fig. 4 shews another method of our
detachable handle as applied to a single cylinder inflater. In this case the handle F
is screwed into the top end of the piston rod. The chain G being provided to connect
the handle F to the inflater when the said handle F is detached from the piston rod.
Or we may use the same method of hinging and connecting the said handle Fas
shewn at Fig. 1 to a single cylinder inflater. Instead of employing a folding or
detachable handle we may if desired use a tubular or telescopic handle H as shewn at
Fig. 5. Or instead of the said handle H being made tubular it may be so formed as to
slide or take over the cylinder A, or to slide or take into the piston rod or rods.
The said handle H is equally applicable to an inflater with two or more cylinders.

page_text: These improvements are equally applicable to single cylinder inflaters as well as
inflaters with two or more cylinders.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we would have it understood
that we do not confine ourselves-to-the-exact-details-as-herein shewn-and-described
us-they-may-be-varied without departing from the-nature of-our-invention. claim as
our invention the whole of the forms of hand pumps herein described.
1. In an inflater or hand air pump the use of a folding or detachable-handle,
substantially-as-herein shewn-and-described-with-reference to Figs. 1-and-2
2. In-an inflater or hand-air pump the use of the-detachable handle and the means
or-their-equivalent for securing the said handle to the-inflater when not in use,
substantially-as-herein shewn-and-described-with-reference-to-Figs.-3-and-4
3. In an inflater or hand air pump the use of a tubular telescopic handle or-its
equivalent, substantially as herein shewn and described with reference to Fig. 5.
4. In-an-inflater-or-hand air-pump the use of a-sliding-handle-or-its-equivalent,
substantially-as-herein described.
5. In-an-inflator-or-hand-air-pump-the-combination of two or more eylinders-fitted
with an equivalent-number-of-pistons and piston rods, and of-a-folding or detachable
handle,-as-and-for-the-purpose-set-forth.