Improvements in and relating to Pumps for Inflating Pneumatio Tyres as used on Cycles and other Carriages.
Year: 1891

page_text: Date of Application, 13th Aug., 1891
Complete Specification Left, 13th June, 1892-Accepted, 16th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pumps for Inflating Pneumatio
Tyres as used on Cycles and other Carriages.
I, ROBERT FREDERICK HALL of the R. F. Hall Manufacturing Co. Ltd.
of Sampson Road North Sparkbrook Birmingham in the County of Warwick do
hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in the construction of pumps used for
inflating pneumatic tyres as fitted on cycles. The pumps in use afford no purchase
or hold for the fingers, the plunger or inner tube which remains stationary is held
between thumb and finger, while the outer tube is worked up and down, thereby
forcing or pumping air into the vessel connected to receive it in the ordinary way.
The end of pump out of which the air is forced under pressure is fitted with a
nozzle which has a knurled or corded ring projection round it about the thickness
of a sixpence and this is all the hold or grip that is afforded for the thumb and
finger. My invention consists in substituting for this knurled or corded projection,
a pair of finger grips similar in design to the loops or handles of a pair of ordinary
scissors, one loop is made larger to receive the thumb and the other is left smaller
for the fore finger. The thumb and finger are now placed inside and the pump can
be held firmly & comfortably in a manner which is impossible with those of the
ordinary pattern in use for this purpose. I also make a modification of this pattern
by cutting away half of each loop or ring, thus forming two semicircular recesses or
hollows into which the thumb & finger readily fit giving a hold or grip about
equal with the complete rings or scissor handles but having the advantage of being
more easily loosed from the grasp and more easily picked up, it not being necessary
to thread the finger and thumb through the complete loops.
Having now set forth my invention, I hereby declare that what I claim is as
follows, the application to pumps or inflators for the purpose herein described of
complete rings or half rings or recesses to fit form of thumb and finger and so
afford a substantial and comfortable grip, to be fitted as part of inner tube or
plunger as described.
Dated this 12th dax of August 1891
COMPLETE SPECIFICATION..
Improvements in and relating to Pumps for Inflating Pneumatic
Tyres as used on Cycles and other Carriages.
I ROBERT FREDERICK HALL of the R. F. Hall Manufacturing Co. Ltd.
of Sampson Road North, Sparkbrook, Birmingham, in the County of Warwick,
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 improvements in the construction of pumps used for
inflating pneumatic tyres as fitted on cycles.
The pumps at present in use afford no purchase or hold for the fingers. When
inflating a tyre with the pumps ordinarily used, the plunger or inner tube which
remains stationary during the operation of inflating the tyre is held between the
thumb and finger of the operator, while the outer tube is worked up and down,
thereby forcing or pumping air into the vessel or tyre to which the stationary
plunger is connected in the ordinary way. The end of the stationary plunger out

page_text: :
of which, the air is forced under pressure is fitted with a nozzle which has a knurled
or corded ring projection round it about the thickness of a sixpence and this
is all the hold or grip that is afforded for the thumb and finger of the operator.
My invention consists in substituting for this knurled or corded projection, a pair
of finger grips similar in design to the loops or handles of a pair of ordinary
scissors, one loop for the forefinger and the other for the thumb, the thumb loop
being made larger than the other. When the thumb and forefinger are placed in
their respective loops the pump can be held firmly, and comfortably in a manner
which is impossible with the ordinary pattern pump in use for this purpose. I also
make a modification of this pattern by cutting, away a half or a part of each loop
or ring, thus forming two semi-circular or curved recesses or hollows into which
the thumb and finger will readily fit giving a hold or grip about equal with the
complete rings or scissor handles but having the advantage of being more casily
loosed from the grasp. and more easily picked up, it not being necessary.to thread-
'the finger and thumb through the complete loops.
In the accompanying drawings I have shewn both forms of my invention.
Figure 1 is an elevation of an ordinary pump fitted with my improved scissor
handle finger and thumb grips and connected to a tyre G, a section of which is
shewn, the outer cylinder of the pump being drawn out to its fullest extent; and
Figure 2 is a similar view shewing the grips as curved projections and the pump
.in its closed position.
The two grips A & B are preferably cast or otherwise formed in one with a
web C through which a central longitudinal hole is bored or otherwise made,
sufficiently large to take the nozzle end D of the plunger E. The nozzle end of
the plunger is then. passed through the longitudinal hole in the web C and the
latter is soldered brazed or otherwise rigidly secured in position close to the
nozzle D. I find this a convenient method of attaching the grips A & B to
the plunger E, but they may be attached in any other convenient manner, or they
may be made in one with the plunger. The loop or grip .A is made slightly.
larger than the grip B and is intended for the reception of the thumb of the
operator.
In Figure 2 part of each loop is cut away leaving the grips as oppositely disposed
curved projections, sufficient of the loops being left to offer a resistance or grip both
at the top and bottom of the curvatures so that a purchase or hold may always be
obtained on the grips whether the outer cylinder F of the pump is being pulled
out or pushed in.
It will be obvious that the grips may if so desired be made to take other of the
fingers besides the forefinger.
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 -
:-
1. The application to the stationary inner tube or plunger of a pump for inflating
tyres, of a pair of curved finger and thumb grips, loops, or eyes oppositely
disposed one on each side of the said stationary plunger substantially as and for the
purpose hereinbefore described and illustrated in the accompanying drawings.
2. The application to the stationary tube of a pump for inflating pneumatic
tyres, of grips for the thumb and finger or fingers for the purpose of affording a
firm and comfortable purchase or hold on the said tube to keep the same stationary
during the process of anovating the numn cubstantially as dosanikod
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant: