Improvements in Fluids app
Year: 1898

page_text: Improvements in Fluids app
I, LEONARD BURRELL, of 37, Rua de Santa Luzia, Rio de Janeiro, in the United
States of Brazil, Engineer, do hereby declare the nature of this invention to be
as follows:-
The machine consists of a cylinder free to rotate preferably on a fixed shaft and
containing two reciprocating pistons joined together by two racks gearing with a
pair of pinions running loose on the shaft in opposite directions being prevented
from turning in the reverse directions by pawls.
The fluid is admitted and withdrawn by pipes leading to and from ports in a
stationary valve face and the cylinder has two corresponding ports connected by
passages to its two ends and which as it revolves come alternately opposite to the
admission and exhaust ports of the valve face.
The space between the two pistons may be filled with oil or water.
I, LEONARD BURRELL, of 37, Rua de Santa Luzia, Rio de Janeiro, in the United
States of Brazil, Engineer, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
The machine consists of a cylinder free to rotate preferably on a fixed shaft and
containing two reciprocating pistons joined together by two racks gearing with a
pair of pinions running loose on the shaft in opposite directions being prevented
from turning in the reverse directions by pawls.
The fluid is admitted and withdrawn by pipes leading to and from ports in a
stationary valve face and the cylinder has two corresponding ports connected by
passages to its two ends and which as it revolves come alternately opposite to the
admission and exhaust ports of the valve face.
The space between the two pistons may be filled with oil or water.
Figures 1 and 2 are longitudinal sections at right angles to one another of a
motor constructed according to this invention. Figure 3 is a transverse section
on the line 3-3 Figures 1 and 2.
a is the cylinder free to turn on the fixed shaft b and having fixed to it the

page_text: driving shaft and pulley c. dd are two pistons in the cylinder a and connected
together by a frame e carrying racks el e¹. f f are pinions free to turn on the
shaft b and g g are ratchet wheels fixed to them. h h are pawls pivotted on
arms fixed to the shaft b and gearing with the ratchet wheels g. kis the fluid
admission pipe leading to the port 7 in the stationary valve face m and n is the
exhaust leading from a similar port o. PP are passages connecting the ends of
the cylinder to ports qq corresponding to the ports and o. The ports and q
are in the form of the arc of a circle and their lengths are dependent on the nature
of the fluid employed and the cut off desired.
The arrangement may be reversed the cylinder being fixed and the shaft being
rotated by it.
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 shaft, a cylinder two single acting pistons in the
cylinder, two racks connecting the pistons and two pinions each gearing with one
of the racks and free to turn on the shaft in one direction only substantially as
described.
2. Apparatus substantially as described and illustrated in the drawinos