Improvements in Rotary Motors, Pumps, Blowers, Exhausters, and Water Meters.
Year: 1892

page_text: Date of Application, 24th Sept., 1892
Complete Specification Left, 26th June, 1893-Accepted, 26th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in Rotary Motors, Pumps, Blowers, Exhausters, and
Water Meters.
We, WALTER SMITH, of 2, Bailey Street, Hall Lane, Bradford in the County
of York, Mechanical Engineer, and THOMAS WADDINGTON, of 14, Oak Fold,
Birch Lane, Bowling, near Bradford, aforesaid Engineer, do hereby declare the
nature of this invention to be as follows:-
:-
This invention relates to improvements in rotary motors, pumps, blowers,
exhausters, and water meters of that type in which two vane drums are employed
geared close together and formed with recesses to allow the vanes to pass, and its
primary object is to relatively form said vanes and recesses in such a manner that
the vanes fill or approximately fill the recesses as they pass or are midway
passed.
For this purpose we prefer to make said vanes and recesses of approximately
semi-circular section. We may provide three vanes on each drum and also form
three recesses therein and said recesses may be close to the vanes.
To simplify the construction of the casing each of the end plates is made with a
groove or recess of the required shape to receive the end of the casing which may
be made of sheet metal rolled and formed to shape.
The drum shafts are geared together in the usual manner but one of the wheels
instead of being rigidly secured to the shaft is adjustably connected to a driving
disc or its equivalent rigidly fixed on said shaft. A similar arrangement may be
provided at both ends. The bearings for the drum journals may have annular lips
on their outer ends to assist in retaining the lubricant and the ends of the journals
are reduced to fit. An annular groove or annular grooves may also be cut in the
journals.
Dated this 23rd day of Sentember 1809
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
Improvements in Rotary Motors, Pumps, Blowers, Exhausters, and
Water Meters.
We, WALTER SMITH, of 2, Bailey Street, Hall Lane, Bradford, in the County
of York, Mechanical Engineer, and THOMAS WADDINGTON, of 14, Oak Fold,
Birch Lane, Bowling, near Bradford, aforesaid, 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 relates to improvements in rotary motors, pumps, blowers,
exhausters, and water meters of that type in which two vane drums are employed
geared close together and formed with recesses to allow the vanes to pass, and its
primary object is to relatively form said vanes and recesses in such a manner
that the vanes fill or approximately fill the recesses as they pass or are midway
passed.
For this purpose we prefer to make said vanes and recesses of approximately
semi-circular section. We may provide three vanes on each drum, and also form
three recesses therein and said recesses may be close to the vanes.
To simplify the construction of the casing each of the end plates is made with a
groove or recess of the required shape to receive the end of the casing which may
be made of sheet metal rolled and formed to shape.

page_text: The drum shafts are geared together in the usual manner but one of the wheels
instead of being rigidly secured to the shaft is adjustably connected to a driving
disc or its equivalent rigidly fixed on said shaft. A similar arrangement inay be
provided at both ends. The bearings for the drum journals may have annular lips
on their outer ends to assist in retaining the lubricant and the ends of the journals
are reduced to fit. An annular groove or annular grooves may also be cut in the
journals.
Reference is to be had to the accompanying sheet of drawings forming a part of
this Specification in which similar letters of reference indicate corresponding parts
in each of the figures.
Figure 1, represents a cross section of a blower constructed in accordance with
our invention.
Figure 2, is a longitudinal section of the same on the broken line a, b Figure 1.
Figure 3, is a plan view of the same.
The vanes or pistons A and the recesses B of the rotary vane drums C, C are
semicircular in cross section as shown in Figure 1 therefore the vanes practically
fit the recesses as they pass each other, which is a decided advantage particularly
when pumping elastic fluids.
To simplify the construction of the casing the end plates D have curved
grooves E cut in them concentric with the bearings of the drums C and the curved
portions F, F of the casing are formed of sheet metal bent to the required curve and
fitted into said grooves. The tie bolts G connecting the two ends D hold the parts
securely together. The opening at the low side between F, F forms the admission
passage and is covered by a grating or wire gauze H and at the top the sides
of F, F are connected by the piece J having a delivery passage K formed therein
or connected thereto.
The shafts L and L' of the drums C are geared together in the usual way by
gear wheels M, M' but instead of keying both wheels on the shafts the wheel M is
formed with a conical recess in its face and is loosely mounted on its shaft L and is
bolted to a cone disc N rigidly secured to such shaft and fitting the recess in
the face. As the bolts O connecting the wheel M and disc N pass through slots
therein, when the bolts are slackened the shafts L and L' and the drums C, C may
be readily adjusted in relation to each other either to facilitate construction or to
take up wear.
Lips P are preferably formed on the outer ends of the bearing R to retain the
lubricant, and the journals S of the shafts L and L' are reduced accordingly.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:
1. A rotary motor, pump, blower, exhauster or water meter having drums
provided with vanes or pistons and recesses of semicircular cross section substantially
as herein shown and described.
2. A rotary blower or the like having the curved portion of the casing formed of
sheet metal fitting similarly curved grooves in the casing, substantially as herein
shown and described.
3. In a rotary motor, pump, blower, exhauster or water meter, the method of
adjustably connecting the wheel M to the shaft L, substantially as herein shown
and described and illustrated in the accompanying drawings.
Dated this 23rd day of June 1893.
DRACUP & NOWELL,
Bradford, Agents.