| 摘要 |
<p>528,029. Locking nuts. DILL MANUFACTURING CO. June 22. 1939, No. 18214. Convention. date, July 1, 1938. [Class 89 (i)] [Also in Group XXII] A lock nut comprises a body having a threaded hole therethrough, and a metal disc secured to the nut also with a threaded hole therethrough, the threads in the disc being of the same pitch and axial alignment as the threads in the nut but slightly out of lead therewith. The nut is provided with a body portion 1, a central hole 2 and an upstanding flange 3. The top of hole 2 has a chamfer 4 leading a ledge 5 adjacent to the lower end of flange 3. The disc 6 may be made of bronze or other metal. It is secured against movement relative to the nut body by turning over the flange 3 to engage the washer. The hole 2 in the nut body 1, and the hole 7 in the disc 6 are then tapped, and the disc is slightly dished so that the disc threads are slightly out of lead with those in the nut body.</p> |
