Year: 1899

page_text: [Communicated from abroad by FREDERICK HENRY DEKNATEL, of 54, South
Clinton Street, Chicago, County of Cook and State of Illinois, United
States of America, Manufacturer.]
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
This invention relates to apparatus for compressing air for the purpose of
inflating pneumatic vehicle tires, and has for its object the providing of a simple,
economical and efficient combined hand and foot pump.
A further object of the invention is to provide a bicycle pump, portable in its
nature, with a compressing cylinder and movable piston, having an extensible
and collapsible piston rod which extends out of the cylinder and may be used in
its extended or collapsed condition.
A further object of the invention is to provide a bicycle pump which is portable
in its nature, with an extensible or collapsible piston rod, which may be used in
either position and in combination with the feet and hands of the operator.
This invention, therefore, is founded on a combination of mechanisms for the
purpose of compressing air, in which a cylinder is combined with a movable
piston, means for holding the cylinder with the feet, an expansible and collapsible
piston rod, and means for holding the piston rod in its extended or collapsed
condition, so that the pump may be used either by hand, or with hand and feet,
and thus enable the operator to effectually inflate a bicycle tire.
The objects of this invention can be obtained by providing a pump in which
there is a cylinder, a piston movably mounted in the cylinder, a telescopic,
collapsible and extensible piston rod which extends out of the cylinder, and
means for holding the piston rod in engagement with the handle in its extended
condition, and in engagement with the handle in its collapsed condition; and,
further, with means by which the cylinder can be held by the feet-all arranged
to be folded in a compact manner.
דק
73 1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: Improvements in Air Pumps or inflators.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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 that class of pumps which is used for compressing air
and forcing it into an inflatable vehicle tire, and has for its object the providing
of a simple, economical and efficient combined hand and foot pump.
A further object of the invention is to provide a bicycle pump, portable in its
nature, composed of a compressing cylinder and movable piston, with an
extensible and collapsible piston rod and means for operatively holding the rod
in its collapsed and extended condition.
Further objects of the invention will appear from an examination of the
drawings and the following description and claims.
The invention consists principally in the combination of a cylinder, a movable
piston therein, an extensible and collapsible piston rod secured to the piston, and
means for operatively holding the piston rod in its extended and collapsed
conditions. It consists further, and finally, in the features, combinations and
details of construction hereinafter described.
In the accompanying drawings,
Figure 1 is a sectional elevation of a complete pump constructed in accordance
with my improvements;
Figure 2 a full-sized broken sectional elevation of the upper part of the
collapsible piston rod;
Figure 3 similar view of the lower part;
Figure 4 a developed" surface view of the inner portion of the upper part of
the tubular piston rod;
Figure 5 a sectional elevation of the upper part of the lower portion of the
piston rod and the lower part of the upper portion of the piston rod, showing the
means for operatively holding them together in their extended condition; and
Figure 6 a plan view of the upper part of the tubular portion of the piston
rod.
"
"
In the art to which this invention relates, it is well known that a
foot pump
is most desirable for the purpose of inflating a bicycle or other vehicle tire; but
that owing to its size it heavy and cumbersome to handle and practically
impossible to carry in the tool bag, and, consequently, that the small hand pump
is the usual one carried by cycling tourists.
In constructing a bicycle pump in accordance with my improvements, I use
a cylinder A provided with a reciprocating piston B, which, during its reciproca-
tions, compresses the air between it and the walls of the cylinder. This cylinder
is provided with an outlet tube C, which may be connected in any usual manner
with the valve of a bicycle tire for the purpose of confining and guiding com-
pressed air from the compressing chamber of the pump to the tire. To use the
pump with the foot, a stirrup D is provided, which is preferably pivotally secured
to the cylinder.
It is highly desirable to provide this pump with a piston rod, whereby it may
be used either by hand alone, or in combination with the hand and foot. In
order to accomplish this result, we make a collapsible and extensible piston rod
in two parts, E and E¹. E is a tubular part, which is rigidly secured to the
movable piston and which, at its upper end and on the inside, is provided with

page_text: two semi-cylindrical shells G, curved at their lower parts at 9 and separated to
such an extent as to provide diametrically opposed channels g¹. The upper part
of these semi-cylindrical shells are cam-shaped, as at g, and provided with lock-
ing recesses g, the purpose of which will more fully hereinafter appear.
The portion E of the piston rod may be either tubular or solid, and is inserted
telescopically in the lower tubular part and provided with cushioned washers
formed of the upper and lower rings and e³ and the interposed cushion e
preferably formed of rubber. A pin is inserted diametrically through the
lower part of the upper portion of the piston rod-though it may be lugs formed
integrally therewith-so that it may pass through the channel between the semi-
cylindrical shells and be turned at right angles so as to ride on the upper cam-
like surfaces and engage with the locking notches, thereby operatively holding
the piston rod in its extended condition. To hold it in its collapsed condition,
the exterior of the lower tubular portion is provided with an outer threaded
portion e adapted to engage with the threaded recess H in the handle H¹ when
the parts are in their collapsed condition and operatively hold them in such
condition.
In operation, when it is desired to use the pump by hand alone, the stirrup
is folded back against the cylinder-see dotted outline Figure 1-and the air
tube connected with the tyre. The piston rod is collapsed and secured together
in its collapsed condition, so that the pump may be used in such condition―
which is its smallest. To use it with both hands and foot, the stirrup is swung
down so that the foot may rest upon it and the piston rod extended and opera-
tively secured together in its extended position, as above outlined, thus permitting
the operator or user to use it by hand and foot in its largest condition, and
thereby obtain the greatest amount of power.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
1. In a pump of the class described, the combination of a cylinder portion,
a piston movably mounted therein, a collapsible and extensible piston rod
secured to the movable piston, and means for operatively holding the piston rod
in its collapsed and extended condition, substantially as described.
2. In a pump of the class described, the combination of a cylinder portion,
movably mounted therein, a collapsible and extensible piston rod secured to the
movable piston and made in two parts-a tubular portion and a second portion
inserted therein, a lug or lugs extending diametrically out from the second part
and adapted to bear on the end of the tubular portion to operatively hold the
piston rod in its extended condition, and means for operatively holding the piston
rod in its collapsed condition, substantially as described.
3. In a pump of the class described, the combination of a cylinder portion, a
piston movably mounted therein, a collapsible and extensible piston rod secured
to the movable piston rod and formed of two parts-a lower tubular part and an
upper part telescopically inserted in the lower tubular part, two semi-cylindrical
shell portions inserted in the upper edge of the tubular portion and providing
a longitudinal channel between them, an upper cam surface and locking notch in
the semi-cylindrical shells, a cushioned washer on the lower end of the upper part
of the piston rod, a pin, pins or similar element extending diametrically out from
the upper portion of the piston rod, whereby the pin may engage with the locking
notches in the tubular part of the piston rod and hold it in its extensible con-
dition, and a handle provided with means adapted to engage the tubular portion
and lock and operatively hold the piston rod in its collapsible condition, sub-
stantially as described.
4. In a pump of the class described, the combination of a cylinder portion, a
piston movably mounted therein, a collapsible and extensible piston rod secured
to the movable piston rod and formed of two parts-a lower tubular part and

page_text: an upper part telescopically inserted in the lower tubular part, two semi-
cylindrical shell portions inserted in the upper edge of the tubular portion and
Providing a longitudinal channel between them, an upper cam surface and lock-
ing notch in the semi-cylindrical shells, a cushioned washer on the lower end of
the upper part of the piston rod, a pin or pins or similar element diametrically
extending through the upper portion of the piston rod, whereby the pin
may engage with the locking notches in the tubular part of the piston
rod and hold it in its extensible condition, an outer threaded portion of
the tubular part, and a handle provided with a threaded portion adapted to
engage the outer threads on the tubular portion and lock and operatively hold
the piston rod in its collapsible condition, substantially as described.
Dated this 16th day of October 1899.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.