Elastic Chain Cover or Protector for Bicycle and other Chain Driving Gears.
Year: 1897

page_text: Date of Application, 30th Oct., 1897
Complete Specification Left, 30th July, 1898-Accepted, 17th Sept., 1898
Elastic Chain Cover or Protector for Bicycle and other Chain
Driving Gears.
HENRY JAMES MACKROW, Staffa, Marlborough Road, South Woodford, Timber,
Merchant, &c. I do hereby declare the nature of this invention to be as
follows:-
.
•
An elastic tube or band in form of tube in form of a ring the tube being open
or split on the internal circumference which can be slipped on over wheels &
chains in bicycle & other chain gears, travelling with them & thus avoiding fric-
tion, retaining lubricant excluding dirt & protecting the clothes of riders, some
are plain others have the open edges piped or rounded for rigidity &c. for ladies
machines they are deeper & flatter.
Dated this 30th day of Ontahan 100%
Elastic Chain Cover or Protector for Bicycle and other Chain
Driving Gears.
I, HENRY JAMES MACKROW, of "Staffa," Marlborough Road, South Woodford,
Essex, Timber Merchant, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
-
This invention has for object, the preparation and employment of an endless
flexible elastic yet split or inner peripherally severed. tube over the drive chain.
and around the edge of both sprocket and chain gear wheels as a self closing and
self gripping casing or shield for protecting same from dirt and dust for pre-
serving the lubricant and preventing entanglement of riders costume, skirt or
trouser legs in the chain or in the gear wheels, while riding.
My invention is clearly represented on the annexed sheet of drawings, Figure 1,
which is a side elevation of cycle driving chain A partly around the sprocket
wheel B and partly round the chain wheel C respectively, and covered or en-
closed in my endless elastic yet split tube casing or sheath D, the touch of the
casing D by its flexible and elastic character is somewhat clinging, so that its two
edges may be plain, as at the section Figure 2, or be beaded, as at Figure 3, it
being understood that as the chain A and the casing D travel together as one
article, the edges of the casing expand and bear against the sides of the
Price R71

page_text: wheels B, C, and on leaving them contract and encircle the chain enclosing it
more or less according to the depth of the sides whether plain or beaded and if
desired wire lined. Figure 4 shows how my flexo-elastic split tube opens out
and adjusts itself to a wheel while in contact.
My invention of endless flexible-elastic travelling yet split or inner peripherally
severed tube like shape of chain casing or shield by its touch on all the links
of the chain prevents rattling or other sounds, it tends to prevent looseness and
loss of the chain's joint pins, and further it subdues the noise of the chain when
engaging with and leaving the teeth of the wheels B, C the tube like casing
being self closing upon the chain while running.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I
claim is:-
1. The preparation and employment of an endless self-closing inner peripher-
ally split or severed flexible-elastic and travelling tube like shield or protector for
the chain and chain gear wheels of a cycle, as described and substantially as and
of the form shown on the annexed drawings.
2. For use with the chain and chain driving gear of a cycle, a specially split
or severed tubular like shield or casing over the drive chain of a cycle, to travel
or move with it, and around and with the chain and gears, the teeth of wheels
being also covered where in contact, as and for the purposes set forth.
1000