| 摘要 |
459,690. Worm gearing. GEMMER MANUFACTURING CO., 6400, Mt. Elliott Street, Detroit, U.S.A.-(Assignees of Hammond, Jr.C.F.; 680, Rivard Boulevard, Grosse Point, and Pulleyblank, H. E.; 4218, W. Buena Vista Avenue, both in Detroit, U.S.A.) March 25, 1936, No. 8916. Convention date, April 1, 1935. [Class 80 (i)] In a steering-gear for vehicles in which a worm on the steering shaft actuates, through teeth, an arm on a rock-shaft, the worm is adapted to be moved in its housing toward and away from the arm to adjust the degree of intermesh of the worm and arm teeth. The worm G, which actuates the arm F on rockshaft E, is mounted on roller bearings K, K<1> of which the outer races J, J<1> are carried, preferably rotatably, in an adjustable eccentric sleeve H the centre part of which is cut away to clear the arm. The part remaining has formed thereon a worm gear M engaged by a worm N on a shaft N<1> adapted to be rotated by a head N<2> and to be locked by a nut N<3>. Rotation of shaft N<1> rotates sleeve H and moves the worm G laterally, the resulting flexing of the steering shaft not affecting its turning owing to the comparatively great distance to the bearing C. A shim P, Fig. 1, between a cover plate O and race member J takes end thrust. The rock-shaft is introduced through an opening covered by a plate Q, Fig. 2, and lubricant is introduced at S, Fig. 1. |
