Driving Mechanism for Bicycles.
Year: 1898

page_text: Date of Application, 15th Mar., 1898-Accepted, 7th Jan.; 1899
Driving Mechanism for Bicycles.
I, WALTER EVERETT TAFT, Manufacturer, of 40, Friendship Street, Providence,
State of Rhode Island, United States of America, 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 my invention is to provide means for imparting power to the
driving wheel with the least possible amount of friction, and it consists in an
improved combination of gearing, with means for adjustment, whereby proper
compensation may be made for wear, as hereafter fully set forth.
Fig. 1 represents a side view of bicycle provided with my improvement.
Fig. 2 represents an enlarged cross section view through the line 6, 6 of Fig. 1.
Fig. 3 represents an enlarged cross section view through the line 7, 7 of Fig. 1.
Fig. 4 represents an enlarged side view of the gear holding case.
Fig. 5 represents an enlarged cross section view through the line X, X of Fig. 4.
Referring to Fig. 1, A represents the gear enclosing_case, F the crank shaft
bracket, G the driving wheel fork, the driving wheel, H the crank shaft, J the
driving wheel spindle.
Referring to Fig. 2, A represents the gear enclosing case, F the crank shaft
bracket, the screws for fastening the gear case A to the crank shaft bracket F.
Referring to Fig. 3, A represents the gear enclosing case, B the removable
cover, G the driving wheel fork, J the driving wheel spindle, K the rear hub, k the
adjusting nut on driving wheel spindle, the binding nut on driving wheel
spindle.
Referring to Figs. 4 and 5, A represents a metal casing, B a removable cover,
C the crank shaft gear, D the intermediate annular gear, E the driving wheel
pinion, a the grooved rolls, steel balls, c eccentric bearings, d steel washers, e
nuts on eccentric bearings, f dowel pins, g slot in eccentric bearings.
In operating the invention, I place the gear casing A. in position extending
between the crank shaft bracket and driving wheel spindle J, fixedly securing
it to the crank shaft bracket F with screws i. I then secure the crank shaft
gear C to the crank shaft H and the driving wheel pinion E to the driving wheel
hub K, placing the intermediate annular gear D in position within the peripheral
grooves h of the rolls a, with the eccentric bearings c in position, then placing the
gear case cover B upon the gear case A and securing it by tightening the nuts e,
I then secure the gear case A to the driving spindle J and fork G with the ad-
justing nut and nut 1, thus securely fastening the gear case A and fork G to
the spindle J. I now loosen the nuts e and with a screw driver inserted in the slots g
of eccentric bearings c turn the said bearings in the direction desired and adjust
the annular gear 1 in mesh with the gear C and pinion E, securing the said
bearings with the nuts e.
It will be obvious to skilled mechanics that these details may be varied without
departing from the spirit of the invention.

page_text: Having now particularly described and ascertained the nature of my
invention and in what manner the same is to be performed I declare that what
I claim is:
1. The combination of the crank shaft bracket, the driving wheel spindle, the rear
fork and the gear enclosing case connected with the crank shaft bracket, the
driving wheel spindle and rear fork, the crank shaft, the crank shaft gear, the
driving wheel pinion, the intermediate annular gear, the anti-friction rolls for
supporting the intermediate gear and the eccentric bearings held in the opposite
sides of the gear enclosing case, substantially as described.
2. The combination of the crank shaft bracket, the driving wheel spindle, the rear
fork and the gear enclosing case connected with the crank shaft bracket, the
driving wheel spindle and rear fork, the crank shaft, the crank shaft gear, the
driving wheel pinion, the intermediate annular gear, the anti-friction rolls for
supporting the intermediate annular gear and adjustable eccentric bearings for
the antifriction rolls, substantially as described.
OCOT
HAIRY TO fen merF SITTA
DOT
NEWTON & SON,
Agents for the Applicant.