Improvements in and relating to Air-pumps or Inflators.
Year: 1894

page_text: Date of Application, 6th July, 1894
Complete Specification Left, 8th Apr., 1895-Accepted, 11th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in and relating to Air-pumps or Inflators.
I, ROBERT FREDERICK HALL, of Ferndale, Church Road, Moseley, near
Birmingham, Warwick, England, Managing Director of the Cycle Components
Manufacturing Company Limited, do hereby declare the nature of this invention
to be as follows:-
My invention relates to air-pumps or inflators and more especially to such
pumps as are used or carried by cyclists for the purpose of inflating pneumatic
tyres.
According to my invention I provide an improved construction of pump-handle
which I form in such a manner that when the pump is not in use said handle
slides inside the pump barrel as hereinafter explained.
In carrying my invention into practice I provide a tubular piston rod in the end
of which a rod secured to a cap is adapted to slide. Said cap is preferably of
such a size as to fit the end of the barrel of the pump. The outside of the
handle of the pump is formed of a number of strips secured inside the aforesaid
cap near its edge and extending parallel to the rod which slides in the piston
rod. The strips pass through slots in a disc secured to the end of the piston
rod and when the cap is pulled away from said disc the strips and central rod
form the handle of the pump. When the pump is not required for use the
central rod slides into the piston rod and the outer strips slide through the slots
in the disc and into the pump barrel surrounding the piston rod, the cap fits on
the end of the pump barrel neatly closing the opening. The cover of the pump
barrel through which the piston rod slides is also provided with slots through
which the strips forming the handle of the pump can be passed when the pump 15
not required for use. In order to prevent the handle from moving relatively to
the piston rod when the pump is being used I form a longitudinal slot in the
central rod of the handle in which slot a pin projecting inside the piston rod can
slide. The said slot is provided with a sharp turn at the end of the rod so that the
handle can be rotated relatively to the piston rod the pin being then slipped into
the transverse part of the slot and so prevent the rod moving lengthwise relatively
to the piston rod. The pin and slot thus form a kind of bayonet joint.
Another device for preventing the longitudinal movement of the handle is as
follows, that is to say :-The central rod of the handle is provided with a spring
somewhat similar to an umbrella spring which moves out laterally as soon as the
central rod is pulled out of the piston rod and prevents the same sliding back again
thereinto. This spring may be formed of a portion of the central rod or may be
otherwise secured to or in the handle of the pump.
I prefer to make the central rod tubular so as to reduce the weight of the same
and 1 sometimes provide for carrying the connecting tube of the pump in such a
hollow rod in which case the rod is made with a wide longitudinal slot through
which the connecting tube of the pump is inserted.
In order to avoid the liability of dust entering the pump through the orifice into
which the connecting tube is screwed, I place said orifice not in the centre of the
end but to one side thereof and I provide a cap which fits on the end said cap

page_text: having an eccentric hole therein. On rotating the cap the nozzle orifice can be
covered or uncovered at will.
Dáted this 6th day of July 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements in and relating to Air-pumps or Inflators.
I, ROBERT FREDERICK HALL, of Ferndale, Church Road, Moseley, near
Birmingham, Warwick, England, Managing Director of the Cycle Components
Company, Limited, 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 :-
My invention relates to air pumps or inflators and more especially to such
pumps as are used or carried by cyclists for the purpose of inflating pneumatic
tyres.
According to my invention I provide an improved construction of pump-handle,
which I form in such a manner that when the pump is not in use, said handle slides
telescopically within the inside of the pump barrel and upon the piston rod, as
hereinafter explained.
In carrying my invention into practice, I provide a tubular piston rod, in the
handle end of which, a rod or open tube, secured to a cap, is adapted to slide.
The said cap is preferably of such a size as to fit the end of the barrel of the pump.
The outside of the handle of the pump is formed of two or more strips, secured
inside the aforesaid cap near its edge and extending or being directed parallel to
the rod or open tube slides in the piston rod. The strips pass through guide slots
in a cupped end flange secured to the handle end of the piston rod, and when the
cap is pulled away from said flange the strips and central rod or open tube carried
by it form the handle of the pump.
When the pump is not required for use, the central rod or opeu tube slides into
the piston rod and the outer strips slide through the slots in the flange and into the
pump barrel surrounding the piston rod, the cap fitting on the end of the pump
barrel and neatly closing the opening.
The rear end of the pump barrel through which the piston rod slides is provided
with a guide having piercings through it alike unto the piercing in the flange and
through which the strips forming the handle of the pump can be passed when the
pump is not required for use.
In order to fix the handle to the piston rod when the pump is being used,
I provide the central rod of the handle with stop springs or catches, which move
out laterally as soon as the central rod is pulled out of the piston rod and prevent
the same sliding back again thereinto.
When the central rod is made tubular it forms a chamber for carrying the
connecting tube or flexible connection of the pump in which case the rod is made
with a wide longitudinal slot through which the said connection is inserted.
In order to avoid the liability of dust entering the pump through the orifice into
which the flexible connection tube is screwed, I place the said orifice, not in the
centre of the end, but to one side thereof, and I provide a cap which fits on the end
said cap having an excentric hole therein. On rotating the cap the nozzle orifice
can be covered or uncovered at will.
Figure 1 of the accompanying drawing represents partly in longitudinal vertical.

page_text: invention.
ving to my
Figure 2 represents a complete longitudinal vertical section of the said pump or
inflator, with the piston rod partly drawn out and the handle fully extended.
Figure 3 represents an elevation of the fore end of the pump, showing the
rotating cap for excluding dirt from the outlet into which the screwed end of the
flexible connection takes.
Figure 4 is a cross section of the pump upon the dotted line. Figure 2, showing
the guide for the piston rod, and the slots or piercings for the handle grips to pass
through.
Figure shows a longitudinal section of the handle end of the pump upon an
enlarged scale.
Figure 6 is a top side plan of Figure 5.
Figure 7 is a cross section of Figure 5 upon the dotted line A, and Figure 8 is a
cross section on the dotted line B, of the said Figure 5.
The same letters of reference indicate corresponding parts in the several figures
of the drawing.
a is the barrel or outer casing, having sliding within its interior, a tubular piston
rod b, fitted at its after end with a telescopic and sliding handle part c, consisting
of an open-sided tubular rod or barrel c', fitted at its outer en e, with a cap c³, of
an inside diameter suitable for taking upon the open after end a', of the barrel a,
when the pump is collapsed.
The fore end a², of the barrel is fitted with a rotating cap a³, having an excentric
piercing at, which, when the pump is in use, is rotated until it comes opposite to an
outlet or orifice a, into which an end of the flexible connection d, is screwed, but
when not in use, an unpierced part of the cap is brought over the orifice and
prevents the ingress of dust to the interior of the pump.
The piston rod b, which works in a circular guide a, fitted in the open end a', of
the pump barrel, has, at its fore end, a piston 6', provided with a valve 6', which
allows air to pass from the back of it on the back action of the piston, but traps the.
air behind it on the forward stroke of the piston, whilst the after end of the said.
hollow piston rod has a circular and cupped flange or disc b³, having piercings,
through it, wherein and wherethrough the opposed strips c', constituting handle
grips, take and slide, whilst the tubular rod or middle member c', slides within the
interior and through the open after end of the piston rod b. e and fare front and
back spring stops for making rigid the said handle part c, to the after end of the
piston rod on the former being drawn out, and which is done by the shoulder e¹, of
the spring e, snapping at the back of the front shoulder 6, and by the shoulder f¹,
of the spring, snapping at the inside back shoulder 66, of the said cupped
flange
Assuming that the component parts of the pump are in the positions represented
in Figure 1, rotate the cap a³, until the piercing within it comes opposite the outlet
or orifice. Then draw outwardly the piston rod, when the handle or grip strips c',.
run through the guides or races a', with it, and also at the same time slide over the
piston rod, and on the said handle part being fully drawn out, the same is made.
rigid by the free ends of the springs carried by the piston rod, coming opposite
clearances in the handle rod or tube, and opening out and snapping fore and aft of
the flange or cupped disc of the piston rod.
To sheath or encase the handle within the barrel of the pump, simply depress.
the catches, slide forward the handle over the piston rod and at the same time
force the piston rod with it into the interior of the barrel of the pump, when the
sume becomes sheathed.
As a further device for making the handle rigid to the piston rod, I provide the
fore end of the tubular piston rod with a bayonet slot, which takes over a pin or
split pin hanging from the mouth end of the piston rod, as represented in Figure 9,.
in which bis the piston rod and c is the handle, g is the stud or split pin of the.
piston rod, and h the bayonet slot of the handle.

page_text: Having now particularly described and ascertained the nature of my said inven
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
--
First. In air pumps or inflators for pneumatic tyres and the like, making up the
handle part of two or more strip grips, carried by a tube or rod, and capable of
sliding upon, and being made rigid to the end of, the piston rod, and of being
sheathed within the pump barrel, substantially as described and set forth.
Secondly. In the handle parts of air pumps or inflators described in the preceding
claim, making the rod or middle member of the handle slide within the piston rod,
whilst the grip strips slide upon the piston rod, substantially as described and set
forth.
Thirdly. In the handle parts of air pumps or inflators as herein described, rigidly
affixing the same in position for use by the means and in the ways substantially as
described and set forth.
Fourthly. In air pumps or inflators, employing at the outlet end of the barrel,
an excentric orifice fitted with a rotating cap having an excentric piercing,
substantially as and for the purpose as described and set forth.
Fifthly. In air pumps or inflators, the general construction, arrangement and
combination of the parts, substantially as and for the purpose as described and set
forth.
Dated this 5th day of April 1895
ROBERT FREDERICK HALL,
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicant..
ROBERT
FREDERICK HALL,
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicant..