Improvements in Velocipedes.
Year: 1896

page_text: Date of Application 20th Aug., 1896
Complete Specification Left. 20th May, 1897-Accepted, 31st July, 1897
PROVIN IONAL SPECIF
Improvements in Velocipedes.
HENRY PARSONS 7 Barr Street Birmingham Cycle Maker do hereby declare the
nature of this invention to be as follows:-
My Improvements in Velocipedes relates to that part of the machine termed the
cranks. In the method of fixing the crank to the chain wheel and driving spindlo
and also in fixing the pedals to the said crunks in the manner hereafter described.
I take the spindle and cut a screw on the ends. The chain wheel having a suitable
projection or boss on is screwed through the centre and placed on the spindle. The
ends of the said spindle extending through the boss; is suitably machined oval or
flat, or in such a manner to prevent the crank moving when fitted on the spindle the
same being slightly taper.
The projecting boss or arms of the chain wheel on two sides forming a wing for
the crank to sink in. The crank is milled out to the shape of oval or flat spindle
end the other sides of the projection or boss carry the screws or pins going through
the crank to so unite all the respective parts, that they revolve together. The
opposite end of spindle carries a screwed collar the attachment being made in like
manner as before described; at the other end of the crank (which is usually made
to receive the pedal) I mill it out oval or flat to receive the pedal pin the pedal pin
carrying its own projections and being similar in form to the spindle ends
hereinbefore described, pins going through the cranks into the projections fasten
them together.
1000
I, HENRY PARSONS, The Centric Cycle Works, Barr Street, Birmingham, in the
County of Warwick, Cycle Maker & Manager do hereby declare the nature of my
said invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
My invention has for its object improvements in velocipedes and relates to the
method of securing the driving cranks on to the ends of the bottom bracket spindle
and also to the method of securing the pedals on to the ends. of such driving cranks
so that the cranks or pedals can easily and quickly be detached and fixed in position
again without any trouble or inconvenience.
In order that my invention may be clearly understood and easily carried into
practical effect I have appended hereunto a double sized sheet of drawings upon
which I have shown sufficient examples to illustrate the nature of my improvements,

page_text: Figure 1 is an end elevation of the bottom bracket showing the driving crank and
sprocket wheel fixed on to the spindle.
Figure 2 is a similar view to Figure 1 showing the other driving crank fixed on to
the opposite end of the spindle.
Figure 3 is a part sectional plan view of the bottom bracket spindle sprocket wheel
and cranks.
Figures 4 and 4 are plan and edge views of the loose collar.
Figure 5 is an enlarged view of the sprocket wheel boss.
Figure 6 is a cross sectional plan viow of Figure 5.
Figure 7 is a plan view of part of a velocipede pedal showing the application of
my method of attachment.
In carring my invention into practice I cut a screw thread near each end of the
bottom bracket spindle S and form the extreme ends on to which the driving cranks C
and C are fitted slightly taper and diamond shaped, or oval, flat or in such a manner
as to prevent the cranks, which have holes formed in their top ends to correspond,
from moving when fixed in position. The bottom bracket sprocket wheel W has the
boss 10 formed on the outer face and this boss has the tapered slot or recess 20'
formed in it for the top end of the driving crank to fit into, the centre being drilled
and tapped so as to allow the wheel to be screwed onto one of the ends of the bracket
spindle. Also formed on either side of the slot formed in the boss w' are the two
holes and which are tapped to receive the screw pins and c³ which pass
through the counter sunk holes formed on either side of the diamond shaped hole in
the top of the crank by which means the crank and sprocket wheel are firmly secured
onto the bracket spindle. To secure the driving crank (to the opposite end of the
bracket spindle I form the loose sleeve or collar 1) with the tapped hole formed in
the centre. This collar is then screwed onto the threaded portion of this end of the
bracket spindle and the emuk fitted onto the diamond shaped portion and then the
screws and d are inserted into the counter sunk holes formed in this end of
the crank and screwed into the tapped holes and d formed on either side of the
collar D by which meaus the crank is firmly and securely held in position.
To secure the pedals onto the opposite ends of the driving cranks I form the
tapered diamond shaped hole e' in this end of each crank or the hole may be oval,
flat or formed in such a nanner as to prevent the pedal spindle F moving when fitted
to the crank the extreme end f being formed so as to correspond in shape to the
hole formed in the crank; the other part which protrudes beyond the end plate J is
screw threaded to receive the collar H, the end of the crank being secured thereto by
screws passing through the holes ¹ and h by which means the pedal is securely
attached to the driving crank.
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 :-
CLAIMS.
In a volauinada cocusing the annealat shal
1
First. In a velosipede securing the sprocket wheel such as W and the crank anch
as C on to the bracket spindle S by forming a slot preferably tapered such as win
the boss of the sprocket wheel in combination with a tapped hole in the centre which
screws on to the end of the spindle and a diamond or equivalent shaped hole in the
end of the crank, the end of the spindle on which the crank fits being formed to
correspond and fit into the slot w and is secured in that position by screws or their
equivalents in the manner substantially as hereinbefore described and as shown upon
the accompanying sheet of drawings.
Second. In a velocipede securing the crank such as C1 to the bracket spindle S by
forming a diamond or equivalent shaped hole in the end of the crank, the extreme
end of the said spindle being forined to correspond and on to the screwed portion of
which is placed the collar D fixed in the manner substantially as hereinbefore
described aud as shown upon the accompanying sheet of drawings.

page_text: Third. In a velocipede securing pedals to the driving cranks by forming a diamond
or equivalent shaped hole in the end of the crank, the end of the pedal spindle being
formed to correspond, the threaded portion of which receives the collar such as H in
the manner substantially as hereinbefore described and as shown upon the
accompanying sheet of drawings.
Fourth. The improvements in velocipedes substantially as and for the purpose
liereinbefore described and as shown upon the accompanying sheet of drawings.
Dated this 19th day of May 1896.
GEORGE BARKER,
77, Colmore Row, Birmingham, Ageut for Applicant.