Improvements in and relating to Driving Chains for Cycles.
Year: 1896

page_text: Date of Application, 7th July, 1896
Complete Specification Left, 7th Apr., 1897-Accepted, 8th May, 1897
IDIONA
Improvements in and relating to Driving Chains for Cycles.
I WILLIAM HENRY DOUGLAS of High Street Stourbridge in the County of
Worcester Watch Maker do hereby declare the nature of this invention to be as
follows:-
My invention consists in fitting a series of covering plates or shields to cycle
chains to cover the openings in the links of the chains. The links so covered form
boxes or coverings to the cogs of the gearing wheels as the chain passes over them,
thus preventing the mud carried by the chain from reaching the gearing-cogs.
In addition to these shields an endless band may be fitted to the outer face of
the chain thus, covering the joints and shielding the outer surface of the chain
from mud or dirt.
Dated this 6th day of Jul 1896
HENRY F. TALBOT,
7 Cherry Street, Birmingham, Agent for. the Applicant.
Improvements in and relating to Driving Chains for Cycles.
I, WILLIAM HENRY DOUGLAS of High Street Stourbridge in the County of
Worcester Watch Maker, 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, reference being had to the
accompanying sheet of drawings in which similar letters of reference relate to
similar parts:-
My invention consists in fitting a series of covering plates or shields onto cycle
chains so as to cover the openings in the links of the chains.
The links so covered form boxes or coverings to the cogs of the gearing wheels
as the chain passes over then, thus preventing the mud carried by the chain from
reaching the gearing cogs.
Referring to the drawings:
Fig. 1 represents one of the shields or coverings.
Fig. 2 shows a portion of an ordinary cycle chain.
Fig. 3 shows a portion of a chaiu covered by the shields. And
Fig. 4 shows how the shields may be lifted so as to expose the links for
cleaning.
The shields or coverings A are made of spring metal so as to clip the open
links B of the chain from a to z so that when a series are clipped on, as in Fig. 3,
the entire upper or outwardly exposed portion of the open links of the chain are
covered and only the centre portion C of the solid links are exposed. Thus as the
chain passes over the cogs of the gearing wheels, the mud being only on the outer
surface of the chain and shields is not carried onto the cogs.

page_text: When it is desired to clean the links of the chain, it is only necessary to unclip
one or other end of the shields & tilt them up as shewn in Fig. 4.
For most makes of cycle chains it is only necessary to vary the widths or lengths
of the form of clip or shield illustrated, but if it is desired to apply such shields to
chains having a different form of link, the form of the shields may be slightly
varied to suit such cases.
The shields clip the links so firmly that they will not readily come off, but the
loss of one or more of them when the rider is journeying on the cycle is of no
detriment to the working of the machine, as the chain travels as readily over the
gearing with or without them.
I wish it to be understood that I abandon all use of and make no claim as part
of this my invention to that portion mentioned in my Provisional Specification,
referring to an endless band covering the outer face of the chain, as I do not find
it necessary in any case to apply such covering, and I find that endless bands have
been used to cover cycle chains.
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:
A series of separate detachable shields or coverings to the links of cycle chains.
Dated thin Cah dan of Amil 1907
HENRY F. TALBOT,
7 Cherry Street, Birmingham, Agent for the Applicant.