Original 1947 Oil and Gas trade vintage catalog for the THORNHILL-CRAVER COMPANY, INC. (Unibolt Division). Main office and plant was located at 1701 Lockwood Drive, Houston, TX.

Manufacturers of Oilfield Equipment.

Products include Unibolt Steel Couplings, Unibolt Malleable Couplings, Unibolt Flexi-Ball Joints, Unibolt Christmas Tree Fittings, Malleable Tees & Crosses and  Unibolt X Type Flow Beans are all fully featured.

The basic mechanical principle of all UNIBOLT Couplings is illustrated on page 3. This unique coupling consists of four main parts: A spherical holding member, or nut, with internal shelves; a plain hub; a seal ring which varies with the type coupling, and a lug hub with external shelves.

Has numerous product images, illustrations, description, application and specifications charts to provide product details.

Unbound from a large rare post-wartime 1946-1947 Catalog of Oil Field Equipment, this unique old twenty-four page technical brochure would display beautifully matted and framed. Awesome cover graphics. A fabulous addition to your retro petroleum industry library. Pages are loose and may contain residual glue on the edge. All pages have a creased corner. (Catalog D-46).