Improvements in Cycles and like Vehicles.
Year: 1898

page_text: Improvements in Cycles and like Vehicles.
FRANCIS BEAUCHAMP, Sunny Side, The Green, South Tottenham, in the County
of Middlesex, Engineer, I do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in cycles and like vehicles. For this
purpose I provide means whereby a chain can be covered at the same time forming
one side of the back fork of a cycle and varying the length of stroke of the crank
for this purpose I provide two pieces of tube of any convenient shape for the
purpose of the chain to run therein set at sufficient distance at the lower end of the
diagonal tube which can be adjusted according to the gearage of the cycle. The
said two tubes are connected to the lower end of the saddle tube or diagonal tube
the other ends of the two tubes are connected to a fork-end conveniently shaped to
receive the ends of the said tubes. The back stay is connected to the fork end in
the usual way. The other side of the fork I use one tube across the centre in the
same manner as are now in use. The said two tubes acts as one side of the fork
as well as a chain guard and represents one side of the back fork at the same time
gives it much greater strength. It is so arranged that the gear can be altered
higher or lower as it has a specially arranged bottom bracket and is provided with
covers at both ends. The other part of this invention relates to the crank which is
made telescopical by providing a conveniently shaped piece of tube the shape of
the crank to slide on the outside of the arm of the same when required to lengthen
the stroke. One side of the face of the crank arm I provide with a series of notches
or grooves. On one end of the conveniently shaped piece of tube I fix a collar
with a hole therein for the purpose of receiving a cotter pin which passes into the
said notches on the crank arm for fixing or holding it at any length. The other
end of the telescopical or sliding piece of tube I fix a lug for the purpose of
receiving the pedal pin, the inner end of the said lug I provide with a cotter pin or
any other mechanical device for holding the pedal pin therein.
Dated this 30th day of June 1898.
FRANCIS BEAUCHAMP.
Improvements in Cycles and like Vehicles.
FRANCIS BEAUCHAMP, Sunny Side, The Green, South Tottenham, in the County
of Middlesex, Engineer. I 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 malatont

page_text: the same time form one side of the back fork of a cycle and a telescopical crank
for giving a long or short stroke provided with a sliding sleeve with grooves or
holes cut therein for adjusting the same.
Refering to the chain guard I provide a gutter shaped piece of tube which can
be adjusted to any gear required.
And in order that the said invention may be fully understood I will now proceed
to describe the same with the aid of the accompanying sheet of drawings in which
Figure 1, is a elevation of a bicycle with chain cover attached thereto. Figure 2, is
a front view of the telescopical crank. Figure 3 is a side view of the same.
Figure 4 shows the crank drawn out to the end of its adjustment. Figure 5 is the
same view as Figure 4 showing the adjustment with holes drilled in the solid
past of the crank to allow a screw or cotter pin to be fixed therein. Refering to
Figure 1, A is the slot fixed to the gutter shaped piece of tube the said slot lies
against a flat faced lug. The said lug is brazed to the diagonel tube of the cycle.
The said lug is provided with a stud or bolt for the purpose of clamping the slotted
arm to the said lug the other end of the of the gutter tubes or guard is provided
with joints marked A 1, A 1. The said gutter tube marked A2, A2. B is the
flat faced lug brazed to the diagonel tube. B1 is the stud or bolt which passes
through the slotted arm A and is screwed into the flat faced lug marked B.
B2 on the other side of the wheel is part of the ordinary D fork with the
B3 is a special made end to carry the
ordinary D fork end brazed therein.
hub spindle and is provided with joints A 1, A1, for the purpose of connecting
the D stay and chain guard thereto. The guard is in two halves which meet
together at A3, in altering the gear the gutter tube moves on the joints A 1, A 1,
and slides in the slotted arms A, A. B4, is the usual stay one end connected to
the saddle lug and the other end connected to joint A 1, as before described.
Refering to Figure 2, C is the cotter pin. C1, is grooves for the adjustment,
C2, is the holes drilled in the solid part of the crank. When the rider wishes to
shorten or lengthen the crank he pulls the screw or cotter pin out and slides the
sleeve into another groove or slot.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1st. The adjustable guard for covering a cycle chain substantially as described
and illustrated in the accompanying drawings.
2nd. An adjustable crank substantially as described and for the purpose specified
and illustrated in the accompanying sheet of drawings.
LT
2011 dow of March 1800
FRANCIS BEAUCHAMP.