Improvements in the Driving Gear of Cycles.
Year: 1897

page_text: I, WILLIAM GUEST, of Neptune Works, Watery Lane, in the City of Sheffield,
Manufacturer, do hereby declare the nature of my invention to be as follows:
My invention has for its object to more firmly connect the crank with the chain
wheel.
I carry the invention into practice in the following manner: I take a chain
wheel having preferably four arms but I do not confine myself to this number,
the wheel has also a suitable boss in the centre.
I make the crank with a boss upon the end which fits upon the crank shaft,
the centre of the boss is turned down to form a short sleeve which fits into the
centre hole of the wheel, and the outer edge is shaped into clutches which engage
between the arms of the wheel.
The crank and wheel may be finally held together by sorews or the like, or the
said sleeve may be screwthreaded at the outer end, and a locknut be screwed
upon it.
ROBT. F. DRURY, C.P.A.,
Agent for Applicant,
Bank Buildings, George Street, Sheffield.
Improvements in the Driving Gear of Cycles.
I, WILLIAM GUEST, of Neptune Works, Watery Lane, in the City of Sheffield,
Manufacturer, do hereby declare the nature of this invention and in what manner
the same has to be performed, to be particularly described and ascertained in and
by the following statement:-
My invention has for its object to more firmly connect the crank with the chain
wheel of the driving gear of cycles.
I illustrate my method in the annexed sheet of drawings, in which
Fig. 1, represents the face of the crank head.
Fig. 2, side view of same.
Fig. 3, the chain wheel with the crank secured in position.
The invention is carried' into practice in the following manner; I take a chain
wheel A, having preferably four arms, but I may use a wheel of other construction
that will lend itself to the purpose.
I make the orank C, Figs. 1 and 2, with a head or boss. B, having a centre hole
CD Q71

page_text: which fits upon the crank shaft or axle, and upon the face of the boss is a short
sleeve D), fitting into the centre hole of the wheel A..
At the outer edge of the enlarged face of the boss B, are projecting lugs or
clutch pieces E, preferably two as shown, but more if desired, these-are to engage
with corresponding recesses between the arms of the wheel, or upon the hub of
the wheel!
The end of the sleeve, D, may be screwthreaded and a thin nut N, be screwed
upon it when in position...
When the crank and wheel are put together. the clutch pieces E, fit into the
recesses, and the sleeve projects through the centre hole of the wheel, the nut N,
is then screwed upon the sleeve which secures both parts firmly together, see
Fig. 3.
If preferred the screwing, of the sleeve, and the nut N, may be dispensed with,
and short screws may be passed through the face of the boss B, into the hub of
the wheel.
Having now particularly described the nature of my invention, and in what
manner the same is to be performed I declare that what I claim is: -
The hereiubefore described method of securing the crank to the chain wheel
of the driving gear of cycles, consisting in forming clutches E, upon the boss B,
of the crank C, to fit into recesses upon the wheel A; with a central projection
or sleeve D, fitting the centre hole of the wheel, and finally securing them either
by a nut N, screwed upon the projecting end of the sleeve D, or by screws passed
through the boss B, into the face of the hub of the wheel.
Datch one woth day of MRICANA
ROBT. F. DRURY, C.P.A.,
Agent for Applicant,
Bank Buildings; George Street, Sheffield.
ROBT. F. DRURY, C.P.A.,
Agent for Applicant,
Bank Buildings; George Street, Sheffield..