An Improved Method of Fastening and Unfastening a Pneumatic Tyre Cover.
Year: 1894

page_text: Date of Application, 23rd Nov., 1894
Complete Specification Left. 22nd Aug., 1895-Accepted, 28th Sept., 1895
PROVISIONAL SPECIFICATION.
An Improved Method of Fastening and Unfastening a Pneumatic
Tyre Cover.
I, WILLIAM ROBERTSON 72 Market Street Manchester Cycle Manufacturer
do hereby declare the nature of this invention to be as follows:-
First I put two wires round edge of cover which are adjustable in their lengths
and fastened to two plates by heads, screws, nuts or hooks.
:
Secondly I make two plates to hold the ends of the two wires, and to slide on
each other and on the rim.
Thirdly I make a hole through the rim in which I fit a single or double
excentric that operates on the two plates. One end of excentric shaft comes
through rim with a head whereby it can be turned, causing the plates to open or
close and the wires to tighten or slacken on the rim. One plate only may slide
with a single excentric or both plates with double excentric or ends of wires or one
end of wires may be fastened to the excentric direct, so that the following results
are obtained -The cover is held to the rim without inflation. The wires may be
adjustable by nuts or screws on the plates so that each tyre can be adjusted to its
own rim. The excentric to work the plates can be put through same hole in rim
as valve or with a separate hole.
Dated this 22nd day of November 1894.
An Improved Method of Fastening and Unfastening a Pneumatic
Tyre Cover.
I WILLIAM ROBERTSON of 72 Market Street Manchester in the County of
Lancashire Engineer and Cycle Manufacturer 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 an improved method of fastening and unfastening a
pneumatic tyre cover to the rim of the wheel for which I employ a single or double
eccentric which lies inside of the rim with a shaft which comes through the rim
whereby the said eccentric or eccentrics can be turned. The wires in the cover
have two pegs on each wire projecting which engage with the eccentric, by turning
the eccentric, the wires are caused to open and shut on the rim so that the cover
grips the rim without inflation and is quite independant of inflation for holding the
cover to the rim.
The accompanying sheet of drawings shows one form of my invention in which
Fig. 1. is elevation and Fig. 2. is plan. m and n are the two ends of plates worked
by eccentrics o and g. p is the shaft which comes through the rim on which is
fitted a key, nut or lever whereby the said eccentrics can be turned, on each wire
of the cover is secured a coupling which is fastened on one end of wire and the
other end slides in loose, on each end of wire are fastened two pegs g. h. k. I which

page_text: fit into holes of plates m and n by turning the eccentrics the holes in plates m and n
are drawn further apart or closer together and as the pegs g. h. k. l. are fitted in
these holes m and n the wires in cover are made longer or shorter in diameter
causing it to open or shut on the rim as desired.
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 use of an eccentric or eccentrics to draw together the two ends of the
wires which tightens the cover on the rim without inflation substantially as
described.
2. The use of couplings e and f to hold the ends of wires and do away with the
usual bridge.
3. The use of the peg p. passing through the rim so as to actuate the eccentric
or eccentrics from the outside.
Dated this 21st day of August 1895.
WILLIAM ROBERTSON.