Year: 1885

page_text: 1, FREDERICK THOMAS ADAMS, of 55, Alexandra Street, Derby, Fitter, do hereby
declare the nature of this invention to be as follows:-
This invention relates to the construction of an apparatus applicable as a rotary
pump easily driven and capable of lifting considerable quantities of liquid but
which may be arranged also as a motor, blower or exhauster.
I arrange a partially truly bored case in which I form an outlet and inlet at
top and bottom respectively. In this case I place a drum, disc or cylinder having
(say three) slots or grooves cut in its periphery and in which I arrange sliding
pistons or blocks bearing on an eccentric or cam formed by stationary covers
or guides.
The drum, disc or cylinder is arranged to bear on the sides of the casing and so
that when water or other liquid enters the same it can flow into one or more of
the slots or grooves as the pistons or blocks sink in the same by travelling on the
eccentric or cam.
The slot or groove carries the water round and by the edge of the drum, disc or
cylinder bearing on the side of the case as it passes the centre, the water or other
liquid carried by the slot or groove is prevented from escaping back till carried
round towards the outlet where the outstroke of the piston or block caused by its
bearing on the larger diameter of the eccentric or cam causes the water or other
liquid to be expelled from the casing.
Suitable ports connect the grooves or slots to allow of the escape of air or water
in the instroke of the pistons or blocks.
The cylinder may be made of any desired length.
The apparatus may be driven for a blower or exhauster for forcing or with-
drawing air or gases, or be arranged as a motor to be driven by fluid pressure.
Dated this 4th day of Decembar 100-

page_text: An Improved Rotary Pump, Applicable also as a Motor, Blower,
or Exhauster.
I FREDERICK THOMAS ADAMS of 55 Alexandra Street Derby in the county of
Derby, Engineer do hereby declare the nature of the above invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement :-
The invention relates to the construction of an apparatus applicable as a rotary
pump easily driven and capable of lifting considerable quantities of liquid but
which may be arranged also as a motor, blower or exhauster, and, to elucidate the
nature of my invention and the manner of performing it I have caused to be
annexed to this specification the accompanying sheet of drawings and now refer to
the Figures and letters of reference marked thereon.
Fig. 1. is an end elevation of a pump constructed according to my invention
with one of the end covers and rings removed.
Fig. 2. A vertical longitudinal section on line a. a of Fig. 1.
Fig. 3. Elevation of packed piston.
Fig. 4. Elevation of unpacked piston.
I arrange a case A truly bored at points B. B¹ B2 and in this case I form an
inlet at C and an outlet at D; inside the case I place a drum, roller or cylinder E.
having (as shewn four) slots or grooves F. F1 F2 F3 cut in its periphery and in
these I arrange sliding pistons or blocks G. G¹ G' G³ these pistons or blocks are
formed as in Figs. 3. and 4. with curved faces having a rib H formed thereon;
over this rib I spring a slotted piece of rubber, leather or other packing which
bears on the points B. B¹ B2 when the piston or block is at the end of its outstroke.
I form a slot I in the piston or block which slot fits over pins or bosses J. J¹ J' J³.
On the pins J. J' J J³ curved blocks M. M¹ M² M³ can oscillate bearing on fixed
eccentrics or cams N. N¹ formed on stationary covers 0. 0' closing the ends of
casing A and furnished with stuffing boxes P. P¹ through which pass the ends of
the shaft L.
The rods K. K serve to connect the opposite pistons or blocks and pass through
the shaft L at right angles and through bush or collar L¹.
The drum roller or cylinder E has rings Q. Q1 bolted on its ends on which the
outer faces of the pistons or blocks G. G¹ G2 G³ work and these rings Q. Q¹ run
against leather or like packing rings R. R. confined between the rings Q. Q¹ and
the inner sides of the covers O. O¹. The rings Q. Q¹ further act as ties to
strengthen the ends of the drum, roller or cylinder E where they are slotted out
to receive the pistons or blocks.
Water or other liquid enters at C and as the drum, roller or cylinder rotates,
flows into the slot or groove F. opposite to it, the piston or block G receding as
the water or liquid flows in by reason of the block or guide M. bearing on the
smaller diameter of the eccentrics or cams N. N¹ (as in Fig. 1) so allowing the
piston or block opposite the inlet to gradually recede and allow the slot or
groove F to become filled with liquid; as the drum roller or cylinder revolves
further the liquid is retained in the slot or groove F. (see the position of F¹ and

page_text: its piston or block now at the end of its instroke) and by the edge of the drum
roller or cylinder bearing on the side B¹ of the casing A as it passes the centre, the
liquid is prevented from escaping from the slot or groove.
As the drum, roller or cylinder rotates towards the outlet D the block M will
commence its outstroke and begin to bear on the larger diameter of the eccentrics
or cams N. N¹ (see the position of F*) and the piston or block G being now forced
outward thereby will expel the liquid into the outlet D. The further rotation of
the 'drum roller or cylinder will cause the block M to bear on the largest diameter
of the eccentrics or cams (see the position of F³) and the piston or block G will
bear on the portion B of the case A and so prevent liquid running from the outlet
to the inlet part of the casing.
The holes in the main shaft through which the coupling rods K. K' connecting
each opposite pair of pistons pass form also connections between each opposite pair
of slots or grooves F. F', F¹ F³ whereby air (or water leaking) behind the pistons
or blocks can escape from one slot or groove to its opposite to avoid back pressure
on the instroke or I may form special ports for the purpose.
The drum roller or cylinder E may be made of any desired length and the
number of slots or grooves and pistons or blocks may be varied, but I find four a
useful number. Where corrosive liquids have to be pumped or corrosive gases
forced or exhausted the working parts must be constructed of, or covered with,
protecting material as will be understood.
The apparatus can be driven for a blower or exhauster for withdrawing air or
gases or be arranged as a motor to be driven by fluid pressure.
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
First. Constructing apparatus applicable as a pump, motor, blower or exhauster
having a drum, roller, disc or cylinder in which are formed slots or grooves
containing sliding pistons or blocks arranged to bear on fixed rounded surfaces
placed eccentrically with the driven or driving shaft of the apparatus, as the drum,
roller or cylinder revolves, whereby, the pistons or blocks are caused to advance or
recede, substantially as and for the purposes described.
Secondly. In a pump, motor blower or exhauster, the combination of casing A,
furnished with inlet and outlet ports, drum roller or cylinder E with slots or
grooves F. F F F³, curved faced pistons or blocks G. G' G³ G³, rods K. K',
oscillating blocks or guides M. M¹ M² M³, and fixed eccentrics or cams N. N¹
formed on stationary covers O. O¹ substantially as described.
POPPLEWELL, COLTON & Co.,
Agents for the Applicant.