Surface Machinery and Methods for Oil-Well Pumping Page: 76
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76 SURFACE MACHINERY AND METHODS FOR OIL-WELL PUMPING.
attached to steel angle-plates, set 6 inches in the concrete floor
and with nail holes in the protruding ends. These angle plates are
so placed that when the sill is attached to them its lower side will
be one-quarter of an inch above the concrete floor and its outer
side will be one-quarter of an inch outside of the outside edge
of the concrete floor and foundation. Thus there is an air space
between the floor and the sill and between the side boards and the
With this arrangement the floor can be washed with a hose and
the sills and the lower ends of the, side wall boards will not remain
damp and become rotten. Moreover, the floor level is far enough
above the ground for the lower ends of the wall boards to be in the
dry, and the drainage of the surface water is away from the building.
The roof is of shingles dipped in paint, drawn over a strip of belt
to remove the excess paint and dried before being put on the roof.
Shingles treated in this way last much longer than those that are
simply painted on the upper and exposed side after being nailed
on. A sheet-iron ridge row is used to keep the shingles from blowing
off and to give a tighter roof.
The power building shown in Plate XVIII, C' (p. 77), is at
Bakersfield, Calif. The sills are 2 by 6 inch lumber laid flat; the
plates are two thicknesses of 2 by 4 inch scantling. The corner posts
are 4 by 4 inches, the studding is 2 by 4 inches, the rafters are 2
by 4 inches, and the sheathing is 1 inch by 6 inches. The walls and
roof are covered with 26-gage galvanized corrugated sheet iron.
The windows and door frames are painted and the floor is of
The frame building shown in Plate XIX, A, is at Big Muddy,
Wyo. It has a concrete floor and roof and walls covered with
galvanized corrugated sheet iron, like the house shown in Plate
Shackle lines are used to transmit reciprocating motion from the
central jack plant, or power, to the jack or wheel at the well. Some
wooden shackle lines are still in use, but wire cables or steel rods are
seen more often. When new material is put in, steel rods are gen-
erally used, although a galvanized, seven-strand, twisted wire rope
is manufactured in suitable sizes for this purpose. Old drilling
cable is often used, however, for shackle lines, and in many respects
is better than new cable because most of the stretch has been taken
out of it. Some oil fields have been drilled with hemp cable, and
in those fields steel-cable shackle lines are seldom seen. It is difficult
to compare the relative merits of old steel cable and steel rods for
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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/m1/97/?rotate=90: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.