Improvements in Rotary Fluid Pressure Motors.
Year: 1893

page_text: Date of Application, 14th Sept., 1893
Complete Specification Left, 17th Nov., 1893-Accepted, 13th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in Rotary Fluid Pressure Motors.
JOHN EDMUND THOMPSON Traveller 21 St. Nicholas Road Brighton and
EDWARD JOHN NEVARD Grocer 9 Albion Hill Brighton do hereby declare the
nature of this invention to be as follows:-
The action is derived from the entrance of steam or water, through the centre of
hollow steel, iron, or metal spindle or axle, to middle of driving wheel, passing.
round outwardly in a worm shaped groove or waterway, to the outside edge of same..
This driving wheel revolves within an outer hoop or casting of metal intersected
with V shaped slots to corespond with outlet in driving wheel, and carrys drum &
fly wheel on other end of axle.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for J. E. Thompson and E. J. Nevard..
COMPLETE SPECIFICATION.
:
Improvements in Rotary Fluid Pressure Motors.
We, JOHN EDMUND THOMPSON, of 21 St. Nicholas Road, Brighton, and
EDWARD JOHN NEVARD, of Albion Hill, Brighton, Inventors, 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 certain construction or arrangement of apparatus which
might be termed a rotary engine for obtaining power from pressure of steam or
water acting upon or against an uneven inner periphery of a fixed cylinder enclosed
in a casing, such steam or water passing through a helical passage in a revolving.
drum, and in connection with a central pipe formed in the main shaft, from which,.
also the machinery or appliance to be operated by the engine can be moved. The
drum has a recess by which the spent steam or water can escape from the slots
in cylinder into casing thence by outlet, as found convenient, there being also a
recess or groove in the drum periphery for a film of steam or water to lodge in to.
serve as a cushion to ease the motion, and reduce friction.
The invention is shown on the annexed drawings, in which
Figure 1 is a transverse longitudinal section of the casing and drum, and Figure 2:
a section of the drum with the one side of the casing removed.
A, A, are standards on a base B for supporting the main shaft C, on which the
drum D, fly wheel E, and pulley F are mounted. The drum D rotates in the
cylinder K which is affixed to the bed plate B and is surrounded by the casing I, J,.
which serves as a receptacle for the spent steam or water.
If steam be used, an opening can be arranged at the top for its escape, but if
water, that which escapes can be drawn off by the pipe N. The shaft C is hollow
for a given distance, and is packed by the gland P to prevent escape where it is in
connection with the supply Q. At the other end, the hollow terminates with the-
centre of the drum D which is fixed to the shaft C; said drum has a helical or
spiral groove $ from the centre to the periphery, and the spiral groove may be
continuous, or have a branch outlet, as by the dotted lines. The fixed cylinder K

page_text: has or inclined notches U centrally around its inner face for the steam or water
from the helical groove S to impinge against, and be the means for imparting
rotation to the drum D in proportion to pressure through the pipe Q.
W is a recess in the drum D, into which the spent steam or water falls from
the pockets of the cylinder K to the chamber formed by the casing shells I, J,
from which chamber it can be led away by the pipe N, or as desired. X is a
peripheral groove in connection with spiral groove S in the drum D to become
charged with steam or water for pressure against all the pockets U covered by
the groove X at the same time, and act as a cushion to ease and reduce friction
between the drum and the solid parts of the cylinder K.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The construction and arrangement of a power engine as shown on the annexed
drawings, and operating in the manner described.
2. In a power engine, the combination of drum D having spiral groove S and
recess W with fixed cylinder K having pockets U, as and in the manner set forth.
The 17th day of November 1802
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said John Edmund Thompson and Edward John Nevard.