Improvements in Bicycles, Tricycles, and other Velocipedes.
Year: 1893

page_text: The decision of the Comptroller-General of the 22nd day of November, 1895, allowed,
under Section 18 of the Patents, &c. Act, 1883, an Amendment of this
Specification.
PROVISIONAL SPECIFICATION.
Improvements in Bicycles, Tricycles, and other Velocipedes.
I JOHN ANDERSON of 7 Bloomfield Avenue Ballymacarrett in the County of
Down Commercial Traveller do hereby declare the nature of this invention to be
as follows:-
At the present time the endless chain and chain wheels of bicycles and tricycles
are enclosed in a casing for the protection of said chain and chain wheels from dust
and dirt. The aforesaid casing cannot be removed from the machine without
material damage being done thereto.
To remedy this defect I make my case in two unequal parts; the upper part
being fished on to or connected. with the lower by means of the edges of both parts
being constructed. on the hinge principle and two parallel rods inserted into the
sides thereof by the removal of which the two parts of said case can be separated
and each removed without difficulty thus obviating the case being damaged by its
removal from the machine.
For the purpose of lubrication 1 attach to the top part of the case on the
inside a fine piece of wire webbing for the better distribution of the oil over the
chain and wheels.
At the two frictional parts of the machine: I use a leather specially adapted for
the purpose of making the casing dustproof and preventing damage being done to
either axle or gear.
Dated this 3rd day of Februa1802
JOHN ANDERSON,
Applicant in Person.
improvements in Bicycles,, Tricycles, and other velocipedes.
I, JOHN ANDERSON of 7 Bloomfield Avenue Ballymacarrett in the County of
Down Traveller 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 :-
At the present time the axis of the driving wheel or wheels of bicycles and
tricycles has motion transmitted to it from a pedal axis by an endless chain working
over chain wheels on the two axes. The chain and chain wheels are exposed to
dust and dirt and not only do they rapidly wear but a considerable amount of
friction and loss of power also results.

page_text: To avoid these evils I enclose the endless, chain and chain wheels in a casing
made in two unequal parts the lower part being about two thirds and the upper
one third formed with double edges effectually protecting the chain and chain
wheels from dust and dirt.
Figs. 1 and 2 of the drawing hereunto annexed show a longitudinal section of
above casing enclosing as above described the endless chain and chain wheels of a
bicycle or tricycle.
A. and B. show the method of fastening the two parts of casing together in the
following manner. Imitation of metal hinges are formed on the outside edges of
casing two on the upper part and one on the lower part on either side into which
two small wire rods formed with a head are inserted the said two rods are with-
drawn when casing is detached from the machine as shown in Figs. 1 and 2,
Section A and B. E and F show two plates-of-casing-soldered on to that part of
the frame of a machine connecting the bracket of the chain wheel with the axle of
the driving wheel and passing between the chain. The two ends and lower edges
of said plates are doubled forming a groove or recess into which the lower part
of the casing is received into position by pressing upward.
G is a round metal disc containing a leather centre in which the back hub
revolves when fitted. The edges of the casing round the opening being also
doubled or recessed the disc G is received into said recess as shown in annexed
drawing Section C and D.
His made entirely of leather through which the crank axle revolves said leather
ships into doubled edges in casing as shown in annexed drawing by a dotted line
around the semicircle Fig. 4.
For the better distribution of oil over the chain and chain wheels I place the
lubricator in the centre at top of casing Fig. 1 and B with a fine wire webbing
attached to case on inside which said wire webbing is shown on annexed drawing
by a dotted line along the top of said case.
Other ways than those shown may be adopted for forming the dustproof casing
but the foregoing I consider the more convenient method for that purpose.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1st. In the construction of the said casing a simple method of attachment to and
removal from the machine of the parts of casing Fig. 1 and 2 leaving E and F
attached to machine being soldered
on to frame of same as herein before
described.
2nd. The adaptation of leather-dises at the bracket axle and wheel hub as a
preventative of friction loss of oil and admission of dust and dirt as hereinbefore
described.
3rd. The introduction-of-wire-webbing as a means of lubrication and distribution
of oil-over-the-chain and chain wheels of the machine as hereinbefore-described.
Dated this 31st day of October 1893
JOHN ANDERSON!