Improvement in and connected with Driving-gear for Cycles, Trollies, and the like.
Year: 1897

page_text: Date of Application, 11th Jan., 1897-Accepted, 1st May, 1897
COMPLETE SPECIFICATION.
Improvement in and connected with Driving-gear for Cycles,
Trollies, and the like.
FRANZ ZASTIERA, at Komotau, of Empire of Austria, K. K. finanz- Ober
Kommissär 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:-
Until now cycles are driven almost exclusively by the transmission of the power
exercised at a crank by means of two chain-wheels, and a chain, upon the driving-
wheel. The disadvantages of this transmission are the stretching of the chains
and in the movement of the crank which transmits the power only according to the
tangent-component of the direction of treading.
The purpose of the present invention is to do away with these disadvantages.
Figs. 1 and 2 of the accompanying drawing show the arrangement;
Fig. 3 shows the details.
In the frame G1 G2G 3, between the parallels G 2 on the axle a 1 which is firmly
embraced by part G 1 of the frame, two levers 1 h 2 are situated which, by means
of a folding piece t 1, carry the tread-levers t.
These levers 1 h2 are continuing on the other side of the axle a 1, each in a
cog-wheel-segment = 1 22. In order to effect the upward-movement of the one
lever while the other goes down, each lever is provided with a bevel-wheel
segment K 1 K 2.
Between both k 1 k2, a bevel-wheel K is situated in catch with both, and is
supported turnable at the arm G and the part of G 1 which embraces the axle a 1.
The transmission-wheel ul or, in order to obtain different velocities, the
transmissions-wheels I u 2, are turning on the axle a 3 and are laterally carrying
the segments s 1 s2 which are standing firmly and diametrally opposite each other,
When
and of which s 1 is situated in the plane of z 1, and s 2 in the plane of z 2.
lever is pressed down, the segment 1 in catch with 1 turns the wheel-
system s 1 ul u2 s2 round the axle a 3 until the teeth of z 1 and s1 are out of
catch; during this time the other lever h 2 has been raised by the action of the
bevel-wheel K, the segment z 2 has gone down, and the segments comes now in
catch with the segment z 2, whereby the working of the levers, segments and so
forth repeats in inversed succession, while the intermediate wheels u 1 u2 remain
in continued revolution. This revolution is transferred on the driving-wheel of the
cycle by a corresponding cog-wheel III IV fixed on the nave; this cog-wheel must
be engageable and disengageable, and also suitable for different numbers of
revolutions in using several wheels.
For this purpose the wheels III and IV are shiftable in axal direction on the
wedge c; each of the wheels III and IV has a bevel nose n with which it lies to a
disk II; this disk II is loose on the nave and is only moved round by friction;
corresponding with the noses n of the wheels III and IV it is provided with
notches n 1 n 2; behind each of the cog-wheels is a spring which lies to a firm
disk I and tends to press the cog-wheel (III, IV) firmly to disk II.
Thus the disks I and the cog-wheels III and IV are firm in the direction of the.
rotation but the latters (the cog-wheels III and IV) are shiftable in axal direction.
When, in order to disengage the levers m with the cross-piece m 1 which rests over

page_text: all 3 disks (I II I), a pressure is exercised on these disks by drawing the string 9,
m I will snap into the notch m 2 of the disks I, and, during the turning of the nave,
retain the disk II by one tooth m 3 until the cross-lever m 1 along the bevel surface
of the notch m2 reaches the periphery of the disks I and thus passes over the
noses m 3. The disk II thus becomes free from the lever m 1 until the next
snapping of m 1 in m 2 of the disks I.
Thus the disk II is always turned by one tooth until the notch n 1 or n 2 stands
opposite the noses n of the wheels III or IV.
The spring situated between I and IV, or between III and I, presses the wheel
to the side, its nose n into the slit n 1 of the disk II, and thus engages the
cog-wheel. In the same manner the disengaging takes place by retaining the
disk I, the bevel nose of the cog-wheel n being then pressed out of the slit n 1 of
the disk II.
This arrangement can also be applied to trollies and the like.
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:
1. A lever driving-gear for cycles, trollies and the like by means of the
cog-wheel-segments provided at the oscillating levers catching into the segments
standing diametrally opposite cach other, substantially as described.
2. The arrangement of a cog-wheel situated between the levers in catch with
the segments fixed at the levers for the purpose of producing the alternate
movement, substantially as described.
3. The arrangement of catch-wheels provided with slant noses and shiftable in
axal direction by springs, the catch-wheels letting the noses alternately catch into
the slits of a loose disk to be turned round by friction, for the purpose of
transferring the rotation of the wheels, produced by the arrangements, on the nave
of the driving wheel, substantially as described.
4. The stopping arrangement of Claim 3 distinguished by the construction of
the disk, as shown by the drawing, activated by a lever with cross-rod pressing on
the disk by means of the string, substantially as described.
Dated this 8th day of January 1897.
FRANZ ZASTIERA,
c/o Erich Peters.