Improvements in Apparatus for Converting Reciprocating into Rotary Motion.
Year: 1896

page_text: Date of Application, 9th Dec., 1896
Complete Specification Left, 25th Aug., 1897-Accepted, 2nd Oct., 1897
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Converting Reciprocating into
Rotary Motion.
I, EDWARD MATTEI, of 2 Spenser Villas, Meadows Road, Loughton, in the County of
Essex, do hereby declare the nature of this invention to be as follows:-
This invention relates to a crank arrangement whereby an approximate continuity
of propulsion is obtained. It is peculiarly suitable for cycles but is also applicable to
all machines in which a crank is used. For this purpose the crank pin in place of
being rigidly fixed to the crank as is usual is mounted on a block free to move in
guides at an angle to the crank, the block being connected (preferably through a
spring) to a second or subsidiary crank set at an angle to the main crank. By this
means when the pull or push on the crank pin is radial or nearly radial to the shaft,
and the main crank therefore ceases to drive, the propulsion is continued through the
subsidiary crank.
Improvements in Apparatus for Converting Reciprocating into
Rotary Motion.
I, EDWARD MATTEI, of 2 Spenser Villas, Meadows Road, Loughton, in the County
of Essex, 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 relates to a crank arrangement whereby an approximate continuity
of propulsion is obtained. It is peculiarly suitable for cycles but is also applicable to
all machines in which a crank is used. For this purpose the crank pin in place of
being rigidly fixed to the crank as is usual is mounted on a block free to move in
guides preferably at an angle to the crank, the block being connected (preferably
through a spring) to a second or subsidiary crank set at an angle preferably a right
angle to the main crank. By this means when the pull or push on the crank pin is
radial or nearly radial to the shaft, and the main crank therefore ceases to drive,
the propulsion is continued through the subsidiary crank.
Figure 1 shows an arrangement in which the subsidiary crank is pulled by the
treadle; Figure 2 one in which it is pushed and Figure 3 one in which it is both
pulled and pushed.
a is the crank shaft and b the crank terminating in guides 61 611 for the block c.
c is the crank pin or pedal axis fixed to the block. c² is a rod also fixed to the

page_text: block c and passing through a hole in the subsidiary crank d to which it is secured
elastically by the nut e and indiarubber washer f.g. Figure 1 is an indiarubber pad.
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. The combination of a crank shaft, main and subsidiary cranks fixed to it, guides
on the main crank, a block in the guides and connected to the subsidiary crank and a
crank pin fixed to the block.
2. Apparatus for converting reciprocating into rotary motion substantially as
described and shown in the drawings.