. The car builders' dictionary; an illustrated vocabulary of terms which designate American railway cars, their parts, attachments, and details of construction .. . r shackles. The screw couplingmay be either loose, or one shackle may be at-tached to the drawbar. Screw Coupling Nut, and Gudgeons (British). Seeabove. Screw Coupling Weighted Lever (British). See above. Screw Gages. Instruments for measuring the diameteror size of screws. They are of two kinds: external,for measuring male screws, and internal, formeasuring female screws. See also Screw PitchGage, Screw Thread Gage. Screw Jack. Fi
. The car builders' dictionary; an illustrated vocabulary of terms which designate American railway cars, their parts, attachments, and details of construction .. . r shackles. The screw couplingmay be either loose, or one shackle may be at-tached to the drawbar. Screw Coupling Nut, and Gudgeons (British). Seeabove. Screw Coupling Weighted Lever (British). See above. Screw Gages. Instruments for measuring the diameteror size of screws. They are of two kinds: external,for measuring male screws, and internal, formeasuring female screws. See also Screw PitchGage, Screw Thread Gage. Screw Jack. Figs. 3870-3871. A jack, the power ofwhich depends upon a screw, turned by a are several such jacks in use, the bell base,ratchet screw jack, the differential screw jack,which has two screws, one working within theother, and the Chapman screw jack, which has acapstan head, into which a bar may be inserted. Sellers or Franklinthe members of thedon entirely the use 1 ////////// Fio. 11. «rS5*«\ A , iVXaaA /vyv WHITWORTH THREAD , Fio. 18. —60°-^ r\w\.V\Av\%v Institute system, and that allAssociation are urged to aban-of over or undersize SELLER?Thread Fio. 15. The Sellers orscrew threads, boltof the Association \^S£E Franklin Institute system ofheads and nuts is the standard, and repeated action of the PROPORTIONS FOR SELLERS STANDARD NUTS AND BOLTS
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Keywords: ., bookcentury1900, bookdecade1900, bookidc, booksubjectrailroadcars
