Improvements in Velocipedes.
Year: 1891

page_text: Date of Application, 31st Mar., 1891
Complete Specification Left, 31st Dec., 1891-Accepted, 27th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in Velocipedes.
I JAMES MCHARDY of Fairfax House Chiswick, Scientific Expert do hereby
declare the nature of this invention to be as follows:-
This invention, which has for its object improvements in velocipedes, may be
carried into practice somewhat as follows:-
The chain-adjustment shall consist of such an arrangement of parts as shall render
it possible to move the chain-wheel-bracket, or bearings forwards or backwards
upon the material which retains them, by means of simple jam-nuts threaded upon
the said material before and behind the said bracket or bearings.
The frame may consist of continuous material (or it may be built in parts) so
contrived that I may dispense with necklets; for, instead of using such necklets I
propose to fashion the parts (say of a diamond duplicate frame) at the neck of the
frame so that it shall be possible to fit them to the steering spindle or socket and
weld or braze them together so as to make them practically one. Or, it may be
possible to give the neck thus constructed, sufficient strength by rivetting or fixing
the parts transversely in any suitable manner.
When adjustible handles are required upon duplicate front forks, I propose to
use a fitting which being fixed on the handle-bar, shall be provided with holes to
fit the duplicate material, and slide upon it (up and down). These holes, being in
the vertical direction, shall be traversed by a hole at right-angles to them and
between them, so that the circumference of this said hole shall suitably cut into the
respective circumferences of the said vertical holes. A bolt is fitted into this last-
provided hole, with arcs cut out of its sides to correspond with the intersections of
the holes, which bolt on being tightened at the outside by a nut, shall retain the
said handle-bar at any required point.
Where roller-bearings are applicable 1 intend to introduce such a construction
as shall render it possible to adjust them by means of split compressible bearings
containing spiral races for the rollers, and if necessary I shall provide balls in
suitable ball races to take up the lateral play, in conjunction with the rollers. Any
equivalent may be used for the spiral roller-race. Miniature piston-rings, for
example would answer the purpose.
Finally it is intended to produce a velocipede-wheel, having spokes consisting of
two or more plies of wire so attached to the rim and hub that a twisting process
shall serve to tighten them as a thread is made to do in the ordinary way.
Dated this 28th day of March 1891.
JAMES MCHARDY.
COMPLETE SPECIFICATION.
Improvements in Velocipedes.
1, JAMES MCHARDY of Fairfax House Chiswick Scientific Expert 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, which has for its object, improvements in velocipedes, is carried
into practice as follows; The chain adjustment consists of a bottom bearing or
bracket provided with holes or slots which move upon the material of which the
frame of the machine is made. This movement is in the direction of slackening or
Price 8d]