Surface Machinery and Methods for Oil-Well Pumping Page: 98
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98 SURFACE MACHINERY AND METHODS FOR OIL-WELL PUMPING.
motors, compressors, and other prime movers. More recently, with
the increase in the use of electric power for pumping oil wells, they
are often used for transmitting power from the motor to the coun-
With better construction and housing of the plant and more care of
equipment, leather belts can be successfully used to transmit power
at pumping oil wells. Endless leather belts are now used success-
fully to transmit power
(1)-4-inch single leather belting. Average of 150 tests on 12 first to the band wheel where
(2)-4-inch single solid woven cotton belting. Best test. a group of wells are
45 (3)-4-inch,four ply,balata belting. Best test.
(4)-4-inch,four ply,friction surface rubber belting. Best test. pumped by a central
(5)-4-inch,four ply,stitched and filled canvas belting. Best test.er or
power or jack plant.
Figure 13 shows the
of leather and fabric
belts. The data were ob-
tained from tests made
by the Mellon Institute
of Industrial Research
for the Leather Belting
__ _Fabric belts, such as
- -5) solid woven cotton, bal-
ata, rubber, and stitched
canvas, are all exten-
sively used in the oil
0 1 2 3 4 5 7 fields, and often under
SLIP, PER CENT the same conditions. Va-
FIGURE 13.-Chart showing horsepower-slip curves rious weights of mate-
rial, different grades of
cotton or fiber, and different methods of manufacture greatly affect
the strength and durability of such belts.
Solid woven belts made of cotton, camel's hair, and other fibrous
materials are generally impregnated with a waterproofing compound
to make them resistant to such conditions as the presence of water,
steam, oil, or heat. These belts, in widths and weights proportioned
to the service required, are woven in single, double, or triple thick-
ness. They are generally pliable and have excellent wearing quali-
ties. The makes that have a camel's hair or alpaca facing, or are made
from long-fibered cotton, are exceptionally strong, pliable, and du-
rable. They seldom crack, even when used with oil-field belt clamps.
They stand high temperatures and much dirt or grit better than most
Pulleys-24-inch diameter, 500 R. P. M.
Belt speed-3140 feet per minute.
Belt tension that specified by manufacturer
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George, H. C. Surface Machinery and Methods for Oil-Well Pumping, report, 1925; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc12407/m1/127/: accessed April 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.