. Railroad digest . top of the journal box, a pair of wheelscan be removed without taking the truckfrom under the car. A nested spring orseparately disposed springs can be used,ihe short outer pedestal jaw takes thestrains in service, and should the tie barbecome broken or even removed thewheels and axle would remain in place. Lifting-Jack Xo. S. BERGER. of Granere, Pennsylvania. Tiio /^^>ioc^- of the present invention isto pi m ulc a screw-jack embodying a plur-alit\ of sciews nested one within the provided with a removable end piece,whereby when the said piece is removedand
. Railroad digest . top of the journal box, a pair of wheelscan be removed without taking the truckfrom under the car. A nested spring orseparately disposed springs can be used,ihe short outer pedestal jaw takes thestrains in service, and should the tie barbecome broken or even removed thewheels and axle would remain in place. Lifting-Jack Xo. S. BERGER. of Granere, Pennsylvania. Tiio /^^>ioc^- of the present invention isto pi m ulc a screw-jack embodying a plur-alit\ of sciews nested one within the provided with a removable end piece,whereby when the said piece is removedand the frame is jacked up far enouglito take the weight off the springs, a. iiiiiiiiiiiiiiiiiiinni : 11 liiii, 111 ^ ■ / Bi;#iL .. «~:^^ ^ i( other and combined with a supporting-base and casing and an operating-:the screws being so related to each otherand combined with a clamp-collar that adifferential feed may be obtained by theemployment of one or both of the change from single to double feedmay be quickly effected, thus adaptingthe jack to a variety of uses. In a screw-jack, the combination witha supporting-casing, and a pair of screwsnested one within the other and mountedin the casing; of an operating lever hav-ing a pawl-and-ratchet engagement withone of the screws, and a clamp-collar hav-ing a swiveled engagement with one screwand a threaded engagement with theother screw, the threads of the clamp-collar corresponding in pitch (when saidcollar is loose) to the threads of the screwwith which it engages. Railway-Lantern Xo. 688, P. KIXG, of Baltimore, Mary-land. In railroading it often becomes neces-sary to warn the engineer of an
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
