Improvements relating to Pumps for the Inflation of Pneumatic Tyres and for like purposes.
Year: 1898

page_text: Improvements relating to Pumps for the Inflation of Pneumatic Tyres
and for like purposes.
66
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, do
hereby declare the nature of this invention to be as follows:-
This invention consists of improvements relating to pumps for the inflation
of pneumatic tyres and for like purposes, my object being to provide simple and
effective means for securing the handle and plunger parts to the body or barrel
of the pump or inflator when not in use, thereby preventing movement of sucli
parts relatively to the barrel, or rattling of the same when the inflator is carried
upon a bicycle.
In the application of my invention to a pump or inflator having a tubular
plunger rod with a telescopic handle upon its outer end, I rigidly attach to the
inner end of the tubular plunger rod a screwed socket piece for the reception of
a locking screw or stud, or I attach the stud directly within the tube. Such
locking screw or stud when employed with a socket piece is provided with a flange
or shoulder which serves to retain the ordinary cup leather in position, whilst the
outer or projecting end of the stud is screwed to enter the ordinary tapped hole at
the outer end of the barrel into which the flexible connecting tube is screwed when
the inflator is required for service. The locking stud can only enter the said
screwed aperture when the plunger is pushed to the end of the barrel. When
screwed home by turning or rotating the handle the screwed stud will effectually
lock or secure the plunger rod with its attached plunger and handle to the body or
barrel of the pump thus preventing relative movement of such parts.
The length of the screwed part of the locking stud preferably make some-
what shorter than the length or thickness of the barrel end closing socket through
which the tapped hole is formed. Upon the end of that part of the connecting
tube which screws within the barrel aperture I preferably provide a plain projection
and cut a slot across the same to engage with a corresponding lug on the extremity
of the locking stud hereinbefore described. Thus as the connecting tube is screwed
into the barrel it will unscrew the locking stud and so release the plunger rod with.
its attached plunger and handle. At the conclusion of the inflating operation
the plunger is pressed to the bottom of the barrel and the locking stud screwed
into the end of the same, and by the engagement of the projecting lug from the
stud with the slotted portion of the connecting tube end, the tube is unscrewed and
released from the barrel by such screwing in of the locking stud.
I sometimes slot the extremity of the locking stud to engage with a projection

page_text: from the connecting tube, and make other modifications in the construction of my
improved pumps or inflators to meet varying services or requirements.
Dated this 4th day of May 1898.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.
Improvements relating to 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, 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 relating to pumps for the inflation
of pneumatic tyres and for like purposes, my object being to provide simple and
effective means for securing the handle and plunger parts to the body or barrel
of the pump or inflator when not in use, thereby preventing movement of such
parts relatively to the barrel, or rattling of the same when the inflator is carried
upon a bicycle.
In the accompanying sheet of explanatory drawings to be hereinafter referred
to:―
Figure 1 is an elevation, with part in section, representing my improved
inflator with the handle and plunger parts detached from the body or barrel part,
whilst, Figure 2 is a similar view but showing the handle and plunger parts in
attachment with the body or barrel part.
Figure 3 is a sectional elevation and Figure 4 an end view showing, to a larger
scale, the pump plunger and the barrel engaging end of the plunger rod.
Figure 5 is an elevation and Figure 6 an end view showing one end of the
flexible connecting tube.
The same reference letters in the different views indicate the same parts.
In the application of my invention to a pump or inflator having a tubular
plunger as A with a telescopic handle B upon its outer end, I sometimes rigidly
attach to the inner end of the tubular plunger rod a screwed socket piece for the
reception of a locking screw or stud, but I preferably attach the locking screw or
stud C directly within the tube as illustrated at Figure 3. Such locking screw or
stud has an outer or projecting end beyond the plunger to screw into the ordinary
tapped hole at the outer end d of the barrel D into which the end e of the flexible
connecting tube E is screwed when the inflator is required for service. The
locking stud C can only enter the said screwed aperture when the plunger is pushed
to the end of the barrel. When screwed home by turning or rotating the handle
the stud will effectually lock or secure the plunger rod with its attached plunger
and handle to the body or barrel of the pump thus preventing relative movement
or rattling of such parts.
The length of the outer or projecting screwed part of the locking stud C I
preferably make somewhat shorter than the length or thickness of the barrel end
closing socket & through which the tapped hole is formed. Upon the end e of that
part of the connecting tube E which screws within the barrel end or socket d
I preferably provide a plain projection and cut a slot across the same as el

page_text: Figures 1, 2, 5, and 6 to engage with a corresponding lug c forming the extremity
of the locking stud C hereinbefore described. Thus as the connecting tube E
is screwed into the barrel it will unscrew the locking stud C and so release the
plunger rod with its attached plunger and handle. At the conclusion of the inflat-
ing operation the plunger is pressed to the bottom of the barrel and the
locking stud screwed into the end of the same, and by the engagement of the
projecting lug e from the stud C with the slotted portion of the connecting tube
end, the tube is unscrewed and released from the barrel by such screwing in of
the locking stud.
I sometimes slot the extremity of the locking stud to engage with a projection
from the connecting tube, and make other modifications in the construction of my
improved pumps or inflators to meet varying services or requirements.
When the inflator is not in use the connecting tube E is screwed into the upper
handle end of the plunger rod; the tube is thus secured in the view of the inflator
shown at Figure 2.
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. A pump for the inflation of pneumatic tyres and for like purposes provided
with means for securing the handle and plunger parts to the body or barrel of the
pump or inflator when not in use, substantially as described.
2. In a pump for the inflation of pneumatic tyres and for like purposes, the
arrangement and combination of parts whereby the plunger rod with its attached
plunger and handle, and the connecting tube, can be readily engaged with the
barrel and disengaged therefrom and in such a manner that the engagement of the
one shall effect the disengagement of the other, substantially as described.
100
1
e T
1000
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and 25, Cross Street, Manchester,
Agents for the Applicant.