Improvements in Power Transmitting Chains.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Power Transmitting Chains.
We THOMAS DUNCAN DUNDAS Electrical Engineer 13, Killieser Avenue-
Streatham Hill London S.W. GEORGE SENIOR Mechanic 30, Caithness Road.
London W. do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved chain for the purpose of transmitting-
power by the means of sprocket wheels.
This chain is so arranged that the link between the solid blocks; where the
teeth of the sprocket wheel gear is made of a piece of channel shaped steel having
a projecting lip, on one or both ends if preferred.
Thus the channel shape of the intermediate link & the projecting lip protect the
sprocket wheel tooth from dust & damage.
Dated this 17th day of December 1896.
T. DUNCAN DUNDAS.
GEORGE SENIOR.
Improvements in Power Transmitting Chains.
We, THOMAS DUNCAN DUNDAS, Electrical Engineer, of 13 Killieser Avenue,.
Streatham Hill, London, S.W. and GEORGE SENIOR, Mechanic, of 30 Caithness.
Road, Brook Green, Hammersmith, 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 improvements in the construction of power-transmitting
or gear chains for use on motor cars, cycles, or in any manner in which chain gear
may be suitably employed.
Gear chains made in accordance with this invention are so constructed as to
prevent dirt or mud getting into or between the links, thus rendering the use of a
gear case unnecessary, while saving a great deal of trouble in the cleaning of the
chain after riding on a muddy road, and at the same time effecting a considerable
saving in the wear and tear of the chain and gear.
The better to explain this invention, reference is made to the accompanying
drawings:-
Fig. 1. represents a short length of the improved chain with the links B..
connected in the ordinary way by rivets or other suitable means to the blocks D.
Figs. 2, 3, 4, and 5 shew respectively a sectiou, a top plan, with front and back.
views of the link.
From these illustrations it will be seen that each link is made of a piece of
channel shaped metal with lip B. This lip is so made that while it overlaps it.
LD...

page_text: does not touch or rest on the adjouruing link. Each link is provided with holes B
through which the blocks D. are connected.
The link may be made in one piece, or if found convenient, the overhanging lip
may be attached by means of rivets or by any other suitable means.
1
In ractice it will be found that the channel shaped links as described, form an
effective cover or shield to the chain blocks D. and also protect the teeth of the
gear or sprocket wheels from dirt.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim 1-
1. In gear chains the construction of the channel shaped connecting links.
2. In gear chains the combination of the channel shaped connecting link with
the overhanging lip.
3. The improved power transmitting or gear chain, substantially as described
and set forth in the accompanying specification and drawings.
Dated this 25th day of January 1897.
J. E. EVANS-JACKSON & Co.,
Agents for the Applicants.