Telescopic Air-pump or Inflator for Pneumatic Tyres and the like.
Year: 1892

page_text: Date of Application, 2nd Feb., 1892-Accepted, 5th Mar., 1892
COMPLETE SPECIFICATION.
Telescopic Air-pump or Inflator for Pneumatic Tyres and the like.
THOMAS COLBORNE, Cecil Villa, Shaftesbury Avenue, Montpelier, Bristol,
Mechanician, 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 relation to improvements in air-pumps, or inflators, for
pneumatic tyres and the like, and, has for its object, to provide means for telescoping
the air-pump, or inflator, thereby enabling a powerful air-pump, or inflator, to be
carried in a small space; also a valve fitted with rubber ball and spring, also a boss
made of rubber or other suitable material.
The invention will be fully understood from the following description, and claims,
when taken in connection with the annexed drawings
Fig. 1. shews view of air-pump, or inflator, (shut up). A represents outside
chamber or body, O, cap or end of A. D, bush screwed into A, through which
B slides. E, bush screwed into B, through which C slides. F, boss made of
rubber or other suitable material, wherewith to hold air-pump, or inflator, when it
ís being used. G, nozzle to connect air-pump, or inflator, to the valve of the tyre,
or other object to be inflated. a, a, apertures, to allow of the influx of air,
which is to be pumped, or forced, into the tyre or other object.
Fig. 2. shews air-pump, or inflator, in section, (shut up). A, represents outside
chamber, or body. B, second chamber which slides inside of A. C, third chamber
which slides inside of B. (This telescoping can be continued indefinitely.) D, bush
screwed into A, through which B slides. E, bush screwed into B, through which
C slides. F, boss made of rubber or other suitable material. G, nozzle to connect
air-pump, or inflator, to valve of tyre, or other object to be inflated. H, spring
used to keep rubber ball in position. I, rubber ball, which is the valve, used to
prevent the compressed air from escaping, into the body of the air-pump, or
inflator. J, screw for fixing leather washer, to end of chamber, into which it is
screwed; also the inside of J, is made so as to receive H, and I. K, end of
chamber C, into which J, is screwed. L, leather washer of form shewn, which fits
inside of B. M, end of chamber B, into which J, is screwed. N, leather washer
of form shewn, which fits inside of A. O, cap, or end of chamber A.
Fig. 3. shews view of air-pump or inflator (extended).
Fig. 4. shews air-pump or inflator in section (extended).
Fig. 5. shews F, which is built up as follows, P, socket into which C and Gare
screwed. Q, boss made of rubber or other suitable material whereby to obtain a
firm hold during the process of inflating the tyre or other object.
Fig. 6. shews enlarged section of H, I, J, Fig. 2.
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. An air-pump or inflator, having a means of being telescoped any number of
times.
2. A valve, fitted with rubber ball and spring.
3. A boss made of rubber or other suitable material, whereby the operator is
THOMAS COLBORNE.