====================================+=============================
Size. | Capacity.
---------+--------+--------+--------+---------+---------+---------
Diameter |Diameter|Diameter|Length | Gallons | Strokes | Gallons
of Steam |of Large|of Small| of | per | per | per
Cylinder.|Plunger.|Plunger.|Stroke. | Stroke. | Minute. | Minute.
---------+--------+--------+--------+---------+---------+---------
8 | 5-3/4 | 4 | 16 | .87 | 75 | 65
10 | 5-3/4 | 4 | 16 | .87 | 75 | 65
8 | 7 | 5 | 16 | 1.35 | 75 | 101
10 | 7 | 5 | 16 | 1.35 | 75 | 101
12 | 7 | 5 | 16 | 1.35 | 75 | 101
| | | | | |
12 | 11-1/2 | 8 | 16 | 3.48 | 75 | 261
14 | 11-1/2 | 8 | 16 | 3.48 | 75 | 261
16 | 11-1/2 | 8 | 16 | 3.48 | 75 | 261
18 | 11-1/2 | 8 | 16 | 3.48 | 75 | 261
| | | | | |
16 | 14-1/4 | 10 | 24 | 8.16 | 50 | 408
18 | 14-1/4 | 10 | 24 | 8.16 | 50 | 408
20 | 14-1/4 | 10 | 24 | 8.16 | 50 | 408
24 | 14-1/4 | 10 | 24 | 8.16 | 50 | 408
---------+--------+--------+--------+---------+---------+---------
====================================+===================================
Size. | Pipe Sizes.
---------+--------+--------+--------+------+--------+--------+----------
Diameter |Diameter|Diameter|Length | | | |
of Steam |of Large|of Small| of |Steam.|Exhaust.|Suction.|Discharge.
Cylinder.|Plunger.|Plunger.|Stroke. | | | |
---------+--------+--------+--------+------+--------+--------+----------
8 | 5-3/4 | 4 | 16 | 1 | 1-1/2 | 4 | 2
10 | 5-3/4 | 4 | 16 | 1-1/2| 2 | 4 | 2
8 | 7 | 5 | 16 | 1 | 1-1/2 | 5 | 3
10 | 7 | 5 | 16 | 1-1/2| 2 | 5 | 3
12 | 7 | 5 | 16 | 2 | 2-1/2 | 5 | 3
| | | | | | |
12 | 11-1/2 | 8 | 16 | 2 | 2-1/2 | 8 | 4
14 | 11-1/2 | 8 | 16 | 2 | 2-1/2 | 8 | 4
16 | 11-1/2 | 8 | 16 | 2 | 2-1/2 | 8 | 4
18 | 11-1/2 | 8 | 16 | 2 | 2-1/2 | 8 | 4
| | | | | | |
16 | 14-1/4 | 10 | 24 | 2 | 2-1/2 | 10 | 6
18 | 14-1/4 | 10 | 24 | 3 | 3-1/2 | 10 | 6
20 | 14-1/4 | 10 | 24 | 3 | 3-1/2 | 10 | 6
24 | 14-1/4 | 10 | 24 | 4 | 4-1/2 | 10 | 6
---------+--------+--------+--------+------+--------+--------+----------
====================================+====================
| Approximate
Size. | Dimensions
---------+--------+--------+--------+ in Inches.
Diameter |Diameter|Diameter|Length +---------+----------
of Steam |of Large|of Small| of | | Space
Cylinder.|Plunger.|Plunger.|Stroke. | Length. | Occupied.
---------+--------+--------+--------+---------+----------
8 | 5-3/4 | 4 | 16 | 111 | 25 × 23
10 | 5-3/4 | 4 | 16 | 112 | 27 × 24
8 | 7 | 5 | 16 | 111 | 26 × 24
10 | 7 | 5 | 16 | 112 | 29 × 24
12 | 7 | 5 | 16 | 112 | 31 × 24
| | | | |
12 | 11-1/2 | 8 | 16 | 132 | 40 × 32
14 | 11-1/2 | 8 | 16 | 132 | 40 × 32
16 | 11-1/2 | 8 | 16 | 136 | 43 × 32
18 | 11-1/2 | 8 | 16 | 136 | 44 × 32
| | | | |
16 | 14-1/4 | 10 | 24 | 176 | 50 × 38
18 | 14-1/4 | 10 | 24 | 178 | 50 × 38
20 | 14-1/4 | 10 | 24 | 178 | 52 × 38
24 | 14-1/4 | 10 | 24 | 180 | 54 × 38
---------+--------+--------+--------+---------+----------
This table refers to Fig. 439.
[Illustration: FIG. 440.]
[Illustration: FIG. 441.]
_The Cameron vertical plunger sinking pump_ is shown in Figs. 440 and
441.
[Illustration: FIG. 442.]
[Illustration: FIG. 443.]
This is one of the most successful mine sinking pumps designed; there
are no parts exposed to rust, and instances have occurred when this
pump has started off and cleared a shaft of water when the pump itself
had been buried for weeks under a mass of fallen rock and debris.
This pump has no outside valve gear, arms or levers; all movable parts
are inside and enclosed, to prevent collision with the walls of the
mine shaft nor is it likely to receive injury from blast explosions.
Being fitted with special exhaust cut-off, it will continue to run as
fast as steam will drive it (with an irregular or intermittent supply
of water, or when the water fails entirely,) not only without danger of
the piston striking the heads, but without injury to the valves. It is
designed and intended to handle gritty water.
_Telescopic pipe joint_ shown in Figs. 442 and 443, supplies a
convenient means for lifting and lowering a sinking pump, and is
usually made in lengths of sixteen feet. This enables the operator to
drop the pump that distance without disturbing the rest of the pipe; by
its use irregular lengths of pipe can be added, whereas, otherwise when
the pump is lowered the pipe would have to be cut of equal length.
The inside pipe is brass tubing which freely slips through the packing
and is non-corrosive.
Fig. 441 exhibits the sinking pump in practical operation; it is the
same as that shown on the previous page.
NOTE.—Mining pumps require to be made “to gauge” and interchangeable;
an advantage which commends itself to experienced mining engineers.
Many “parts” should be provided in duplicate on account of the rough
usage and hard service alluded to above.
_The “Scranton” pattern of a mining pump_ is illustrated by the cuts
shown below (Figs. 444 and 445).
[Illustration: FIG. 444.]
[Illustration: FIG. 445.]
The plungers of this machine work through middle, exterior
stuffing-boxes, into four separate and distinct water cylinders. The
valve areas and water ways are unusually large in proportion to the
displacement of the plunger, so that the velocity and consequent
destructive action of the water currents is decreased in passing
through the pump.
These pumps are designed to withstand safely a working pressure of 250
pounds to the square inch, and all their attachments are especially
strengthened with a view to meeting the rough usage and hard work to
which they are liable to be subjected in mining operations.
[Illustration: FIG. 446.]