US2006064A - Nut lock device - Google Patents

Description

June 25, 1935. J. YOUNG-I27... .v 25 2 NUT LOCK DEVICE Filed Sept 18, 19:55?

bolts 6 and brake adjustingnuts I provide an Patented June 25, 1935- UNITED STATES PATENT OFFICE mesne assignments, to

The National Superior Company, Toledo, Ohio a corporation of Delaware Application September 18, 1933, Serial No. 689,941

6 Claims.

This invention relates to an improved adjusting nut lock device that finds particular application in connection with the adjusting mechanism of a brake structure.

An object of this invention is to provide an improved and effective device that will operate to prevent theaccidental rotation of the brake adjusting nut used on a brake structure and to also provide in the same instrumentality a wrench which can be utilized in making the desired brake adjustment. This invention is addressed to an improvement over the structure shown in the Faulkner et al. Patent No. 1,925,314 granted September 5th, 1933.

In carrying out this invention, I employ a wrench member that is normallyretained in engagement with the adjusting nut of a brake mechanism and secured against any rotary movement relative to the adjusting screw. The wrench member can be disengaged from its locked position and employed as a regular wrenchv for adjusting the brake mechanism after which operation the-wrench is returned to its locking position to retain the adjusting nut from rotation.

Figure 1 is a partial front elevation of a hoist- 1 ing drum and brake assembly embodying my invention.

Figure 2 is an enlarged fragmentary plan view. Figure 3 is an enlarged fragmentary view in elevation.

Figure 4 is a perspective view of the vice.

Figure 5 shows a modification of my invention. Referring to the drawing, I indicates the spooling drum of a hoisting drum having brake rims -2 mounted on its opposed flanges. The brake mechanism issimilar to that shown in the joint application Serial No. 519,508, filed on March 2, 1931, by S. W, Long and applicant, which issued lock deon April 24, 1934, as Patent No. 1,956,433, and

includes a pair of brake bands 3 mounted on the rims 2, an actuating lever 4 connected through a leverage mechanism to the live ends of the bands 3 and an equalizer beam 5 for anchoring the dead ends of the bands 3. Eye

adjustable connection between the brake bands 3 and the equalizer beam 5. The brake adjusting nut I is provided with a flanged portion to form a collar 9 which fits within a shouldered recess in the equalizer beam.

The locking device forholding the adjusting nut 1 against rotation includes an open end type of wrench member 8 which has a forked opening I! to engage the non-circular portion of the nut I. The end of the wrench remote from the open end I 2 is provided with an elongated slot l which fits over a hooked lug H formed on the upper face of the equalizer beam 5. The slot I0 is slightly longer than the corresponding length of the lug H so that it is necessary to slide the member 8 radially away from the nut 1 in order to lift the same clear of the hooked lug and thereby render the member 8 free to be employed as a wrenchfor rotating the adjusting nut. Upon the adjustment being completed, the wrench is returned to its locked position on the lug II to secure the adjusting nut against rotation from either accident or vibration. The slope formed on the upper face of the equalizer beam permits the wrench member 8 to have a tendency to slide downwardly on the equalizer beam surface and to engage the hooked portion of the lug ll.

Figure shows a modification of the invention in which the wrench member 8a is closedat the end which engages the adjusting nut To for the purpose of preventing any removal of the member from the brake mechanism. The wrench member la is provided with an elongated opening |2a to permit sliding the member radially to disengage the hooked lug on the equalizer bar. In the event that the wrench member 8a cannot take a complete turn when adjusting the nut 1a, the wrenchcan be lifted from engagement with the non-circular portion of the nut and then dropped over the nut in another position for effecting another partial turn of the nut.

While I have herein illustrated two preferred embodiments of my invention, it is to be understood that I:do not wish tobe limited to the particular structures shown in the drawing but that my invention is of the full scope of the appended claims, and is obviously subject to further varied modifications without departing from the spirit of my invention. 1

I claim:

1. In a device of the character described, the combination of a drum, a brake rim non-rotatively mounted relative to said drum, .releasable frictional brake means operatively associated with the brake rim to arrest the rotation thereof, an adjusting means for the brake means including a rotatable member, detachable means having a handle extension adapted in one position'to engage the rotatablev member to hold the same in adjusted position, and means to releasably hold said detachable means in said position, said deimpart rotation to the rotatable member.

2. In adevice of thecharacter described, the

combination of a drum, a brake rim non-rotatively mounted relative to said drum, a brake band passed over the brake rim, a brake adjusting nut,

means to anchor said nut, means secured to the dead end of the brake band and adjustably secured to the adjusting nut, detachable means having a handle extension adapted in one position to engage the adjusting nut to hold the same in ad- I combination of a drum, a brake rim non-rotatively mounted relative to said drum, a releasable frictional brake means operatively associated with 'the brake rim to arrest the rotation thereof, an

adjusting means for the brake means including a rotatable adjusting nut, a detachable forked member having a handle extension and adapted to engage a non-circular portion of said nut, said member in one position being adapted to hold the nut in adjusted position, and means to releasably hold said detachable forked member in said position, said forked member upon being released from the first position being adapted upon manual actuation applied to the handle extension to impart rotation to the nut to adjust the brake,

4. In a device of the character described,'the combination of a drum, a brake rim non-rota .tively mounted relative to said drum, a releasable frictional brake means operatively associated with the brake rim to arrest the rotation thereof, an adjusting means .for the brake means including a rotatable adjusting nut, a detachable forked member having a handle extension and adapted to engage a non-circular portion of said nut, supporting means for said member, a hook shaped lug on the supporting means, and a slot in the forked member adapted to fit over the hook shaped lug tachable means upon being released from the first position being adapted upon manual actuation to r to retain the member in a fixed position, said forked member upon disengagement from the lug being adapted upon manual actuation applied to the handle extension to impart rotation to the nut to adiust the brake.

5. In a device of the character described, the combination of a drum, a brake rim non-rotatively mounted relative to said drum, a releasable frictional brake means operatively associated with the brake rim to arrest the rotation thereof, an adjusting means for the brake means including a rotatable adjusting nut, a detachable forked member having a handle extension and adapted to engage a non-circular portion of said nut, supporting means having an inclined surface for said member, a hook shaped lug on the inclined supporting means, and a slot in the forked member adapted to fit over the hook shaped lug to retain the member in a fixed position, said forked member upon disengagement from the lug being adapted upon manual actuation applied to the handle extension to impart rotation to the nut to adjust the brake.

6. In a device of the character described, the combination of a rotating element, a brake rim non-rotatively mounted relative to said rotating element, a releasable frictional brake means operativeiy associated with the brake rim to arrest the rotation thereof, an adjusting means for the brake means including a rotatable adjusting nut, a wrench member having a handle extension at one end and an enclosed elongated opening at the other end, the sides of the elongated opening defining the smallest dimension thereof being adapted to engage a non-circular portion of the nut, said wrench member being free to move transversely-of the nut to the extent of the elongated opening therein, supporting means for the wrench tion upon lateral shifting and lifting of the handle extension.

FORREST J. YOUNG.

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