Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 379
367 PETROLEUM. entirely of Norn-ay iron (2 in. thick), with They consist of a temper screw, rope -socket, auger stem, sinker-bar and substi- the exception of the inner faces and ends tute, the jars, two bitts, a round and flat of the slotted openings, which are lined with steel ; the whole being… … The temper screw varies little from for- mer use except in size, the present total length toeing about 5 ft.; the details of its construc- tion are fully shown by the cut. The au- ;ger stem, sinker-bar and substitute are re- j spectively 24, 14, and 5 ft. in length ; the | substitute being used in…
Engineering
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