Improvements in Velocipedes.
Year: 1891

page_text: Date of Application, 17th Feb., 1891
Complete Specification Left, 9th Sept., 1891-Accepted, 24th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Velocipedes.
I, ERNEST QUELLE, of 49 South Street, Camberwell S.E., in the County of
Surrey, Gentleman, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to do away with the pivots and sliding bolts
hitherto used to attach the crank axle brackets to main frame, whereby the chain
is adjusted or, in the case of spring frame velocipedes, the crank axle is allowed.
swinging motion.
In carrying out my invention I suspend the crank axle bearings by spring
arms securely attached to the frame instead of the pivoted rigid arms hitherto used.
Therefore braze or otherwise attach one end of each spring to the crank axle
bearings and I secure the other end of each spring to the main frame by screws or
brazing.
These springs allow the crank axle bearings to swing in a perpendicular
direction to the crank axle in almost the same way as do the ordinary pivoted
brackets.
I may connect these springs together by cross stays or springs so as to obtain
more rigidity where it is most required without interfering with the swinging
motion.
To keep the chain at its proper tension I use stay rods between the crank
axle and driving axle bearings and with or without screwed ends, but I may
use any other kind of stays.
I may also use any kind of springs and they may be of any suitable material,
shape or rigidity.
I may apply my invention to any kind of cycles, whether rigid or spring frame
machines.
COMPLETE SPECIFICATION.
Improvements in Velocipedes.
I, ERNEST QUELLE of 49 South Street, Camberwell, in the County of Surrey,
Gentleman, 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 :-
The object of this invention is to do away with the pivots and sliding bolts
hitherto used to attach the crank axle brackets to the main frame of a velocipede
whereby the tension of the chain is adjusted or in the case of spring frame
velocipedes, the crank axle is allowed swinging motion.
In carrying my invention into practice I suspend the crank axle bearings by
spring arms securely attached to the main frame of the velocipede instead of
by means of the pivotted rigid arms hitherto used. By this method of attach-
ment the crank axle brackets swing in a vertical plane in a forward and
backward direction, that is to say at right angles to the vertical plane containing
the crank axle.
In the accompanying drawings
Figure 1'shews in side elevation part of a rear driven bicycle with my invention
adapted thereto. The crank axle bearing B is provided with a lug B having a
vertical slot into which the lower end of the spring arm $ is brazed or otherwise

page_text: rigidly affixed. The upper end of said spring arm S is also brazed or otherwise
rigidly affixed in a similar vertical slot in the head E2 of a bolt E. There is
therefore no side swaying and the bolt E is firmly screwed into the main frame M F
and secured by means of the mit E³, or the bolt E may be screwed into the lug F
which is brazed or otherwise rigidly affixed to the main frame M F.
Figure 2 shews detached views of the bolt E with the slotted head E, the
spring S is front and side elevation, and the bearing B with the slotted lug 12.
R is a stay rod or tube connected to the crank axle bearing B and to the
driving axle bearing D, and adjusted by means of screwed ends or otherwise so as
to keep the chain at the required tension. I may however, use any other suitable
means for adjusting the tension of the chain.
Figure 3 shews in dotted lines the forward and backward travel of the bearing B
and the positions which the spring S will assume.
Figure 4 is a detached view of a crank axle bearing B with my invention
applied thereto, the lug B2 being situated in the front of the bearing instead of on
the top as in Figure 1.
Figure 5 shews my invention as applied to an ordinary tricycle D being the
driving axle bearing, and H the screwed end of the stay R for adjusting the tension
of the chain.
I may connect the springs S together by means of cross stays or springs S² as
shewn in Figures 6, 7 and 8, so as to obtain more rigidity where it is most
required without interfering with the forward and backward swinging motion of
the crank axle bearings B.
Figure 6 shews in elevation the springs S, with spring stay S, suitable for a
crank axle bracket with an inside chain wheel.
Figure 7 is a similar view suitable for a bracket with chain wheel outside the
bearings, and
Figure 8 is another similar view shewing the bracket adapted for an ordinary
tricycle.
In Figure 9 I have shewn in front and side elevations a spring bracket constructed
in accordance with my invention adapted to a spring frame bicycle of any
ordinary construction having an inside chain wheel, A is the crank axle, K shews
one of the cranks, and W is the chain wheel. The other parts are the same as
in the other figures.
In all the drawings where the same letters of reference occur they are used to
indicate the same or corresponding parts.
Although in the drawings I have shewn the spring $ as a flat spring I wish
it to be distinctly understood that I do not confine myself to the use of a flat
spring, as any kind of spring of suitable shape, rigidity and material may be used
with equal advantage. I also wish it to be understood that my invention may be
applied to any form of chain geared cycle whether rigid or spring frame machines.
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 :-
1. In chain geared cycles, the suspension of the crank axle brackets or bearings
on spring arms rigidly attached to the main frame, or to lugs attached to the main
frame, the said spring arms being provided with cross stays or springs when
necessary, in the manner and for the purpose substantially as herein described and
shewn in the accompanying drawings or any mere mechanical equivalent thereof.
2. In chain geared cycles the use of spring suspended crank axle brackets or
bearings constructed substantially as and for the purpose hereinbefore set forth
and illustrated in the accompanying drawings.
Dated this 9th day of September 1891.
F. W. GOLBY,
Agent for the Applicant.