Improvements in Gear for Converting Reciprocating Motion into Rotary in Engines and other Machines.
Year: 1897

page_text: Date of Application, 7th May, 1897
Complete Specification Left, 5th Feb., 1898--Accepted, 30th Apr., 1898
PROVISIONAL SPECIFICATION.
Improvements in Gear for Converting Reciprocating Motion into
Rotary in Engines and other Machines.
We, WILLIAM BAKER, of No. 168, Seven Sisters Road, Holloway, Middlesex,
Gentleman, and GEORGE CYRUS OFFEN, of No. 363, Seven Sisters Road, South
Tottenham, Middlesex, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention is specially designed for G. C. Offen's multiple piston gas
engine No. 13594-1890, but is capable of use with nearly every sort of engine for
converting the reciprocating motion of the piston or pistons to the rotary movement
of the shaft or axle or any machine where a like action is required. In carrying out
our invention we use a special form of cam or path for a roller or rollers to
travel in, such cam or path being formed to suit the number of pistons or
levers. The roller or rolfers being attached to the crosshead, or piston, piston-
1od or lever and the cam or path attached to a disc and revolving on a suitable
shaft or axle and facing the rolier or rollers so that they are free to travel
therein. We prefer to make the cam or path as plotted out from lines which
give an easy movement for both piston or pistons or levers, and the disc that
carries the cam path; and is repeated four times in and out in the circum-
ferance to suit the four piston engine before mentioned, but the path may be made
in any curve or curves that suits the requirements of the case, and by lengthening
the piston, piston rod or levers or reducing the number of pistons, rods or levers
the number of waves or curves may be increased or decreased to vary the speed
of the rotary shaft or axle as desired, further the movement enables the shaft or
axle to be revolved in either direction.
Improvements in Gear for Converting Reciprocating Motion into
Rotary in Engines and other Machines.
We, WILLIAM BAKER, of No. 168, Seven Sisters Road, Middlesex, Gentleman,
and GEORGE CYRUS OFFEN, of No. 363, Seven Sisters Road, Middlesex, Engineer,
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 is anecially designed for f C Offen's multiple niston Coa

page_text: engine No. 13594-1890, but is capable of use with nearly every sort of engine for
converting the reciprocating motion of the piston or pistons to the rotary movement
of the shaft or axle or for any machine where a like action is required. In carrying
out our invention we use a special form of cam or path for a roller or rollers to
travel in, such cam or path being formed to suit the number of pistons or
levers, the roller or rollers being attached to the crosshead, end of piston, piston
rod or levers and the cam or path revolving on a suitable shaft or axle and facing
the roller or rollers so that they are free to travel therein. We prefer to make
the cam or path as plotted out from lines which give an easy movement for
both piston or pistons or levers, and the cam or path; and is repeated four
times in and out in the circumferance to suit the four piston engine before
mentioned but the path may be made to suit any number of pistons or in any
curve or curves that suit the requirements of the case, and by lengthening the
piston, piston-rod or levers or reducing or increasing the number of nistons rods
or levers the number of waves or curves may be varied to alter the speed of the
rotary shaft or axle as desired. Further this movement enables the shaft or axle
to be revolved in either direction.
Reference is to be had to the accompanying drawings forming part of this
specification, in which
Figure 1, Sheet 1, illustrates the four cylinder engine in front elevation with
the pistons on the out stroke.
A, represents the cam or path, B, the rollers, attached to the underside of
crossheads and free to revolve and travel in cam or path, C, cylinders, D ex-
plosive chamber and centre casting, E, bedplate F, crossheads attached to piston-
rods, G, disc mounted on shaft, carrying cam path.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:
The adaptation of the well known cam and roller movement to the multiple
piston or other engines for converting the reciprocating motion of the pistons
to the rotary movement of the shaft.
3000