US607622A

US607622A - Nut-lock

Info

Publication number: US607622A
Authority: US
Publication date: 1898-07-19
Anticipated expiration: 1915-07-19

Description

. Patented July [9, [898.- W. B. METCALF, In.

l v a a wflw 1 2 2 1 H i Z r w -W ,.f .1 ii, %/1 E No. 607,622. Patentd July l9, I898.

w. B. METCALF, In.

NUT LOCK.

- (Application filed Jan. 28, 1898.)

2 S haets-Sheet 2.

(No Model.)

. v 8 0 ml a 1 IV! r a Mr v a 1 T NITED STATES] A'rnNr Fries.

NUT-LOCK.

SPECIFICATION forming part of Letter Patent No. 607,622, dated July 19, 189 8. Application filed January 28, i898. Serial No} 668,306. (No model.)

J12, a citizen of the United States, residing at Auburn, in the county of Nemaha and State of Nebraska, have inventeda new and useful Nut-Lock, of which the following is a specification.

The invention relates to improvements in nut-locks.

The object of the present invention is to improve the construction of nut-locks and to provide a simple and comparatively inexpensive one which will positively look a nut on a bolt, spindle, or other threaded part and effectually prevent the same from accidentally unscrewing.

Another object of the invention is to enable a nut to be readily removed when desired without injuring the lockin g device, the nut, or the bolt or spindle.

The invention consists in the construction and novel combination and arrangement of parts, as hereinafter fully described,'illustrated in the accompanying drawings, and pointed out in theclaims hereto appended.

.In the drawings,Figure 1 is a'sectional view taken transversely of a nut provided with a locking device constructed in accordance with this invention, the locking bar or dog being in engagement with a bolt or spindle. Fig. 2 is a similar View showing the parts unlocked. Fig. 3 is a detail view of the slide; Fig. 4 is a detail View of the wrench. Fig. 5 is a sec tional view illustrating a modification of the invention, the locking bar or'dog being in engagement with the bolt or spindle. Fig. 6 is a similar view showing the locking bar or dog out of engagement. Fig. 7 is a detail perspective view of the inner projection or arm of the wrench.

Like numerals of referencedesignate corresponding parts'in the several figures of the drawings. 7

- 1 designates a nut provided with asubstantially radial opening 2, communicating with the threaded opening 3 and receiving a longitudinally-movable locking-bar 4, which is adapted to engage a bolt or spindle 5 or other threaded part and prevent the nut from accidentally unscrewing. The locking bar or dog 4 is provided at its engaging end with ing bar or dog. 7 17 forms a lock and prevents any movement teeth 6, which may be arranged in either a curved or straight series and which may be of any desired size and number to hold the spindle securely, and the engaging end may be curved, as illustrated in Figs. 1 and 2 of the accompanying drawings, or it may be hook-shaped, as shown at 7 in Figs. 5 and 6, and be provided with two sets of teeth 8 and 9." The locking-bar may engage the bolt or spindle in any other suitable manner, such as providing the bolt or spindle with a groove or recess.

The outer end of the locking bar or dog is provided with a circular opening 10, receiving an eccentric 11, which is circular to conform to the configuration of the opening; but, as illustrated in Figs. 5 and 6, the eccentric may be triangular or of any other desired shape which will, when rotated, effect a reciprocation of the locking bar or dog to throw it into engagement with the bolt or spindle and withdraw it therefrom. The cam or eccentric is provided with a rigid arm 12, which connects it with a slide 13, and the latter is mounted on the locking bar or dog between the ends thereof and is provided at its inner end with a lug 14, fitting in a guide-slot 15 of the nut. Instead of constructing the arm 12 as shown in the accompanying drawings any other form of arm or connection may be employed for enabling the slide to actuate the eccentric. The slide is provided with suitable ways 16 to receive thelocking bar or dog; but the latter may be constructed to receive the slide, if desired, and the ways 16 are pref.

erably formed bytongues formed on one of the parts and extending inward over the other. The outer portion of the 'slide is provided with an angularly-disposed slot 17, having a longitudinal extension 18 and receiving a pin 19 of the arm or link 12, whereby when the slide is reciprocated the cam will be rotated and effect a corresponding movement in the lock- The extension 18 of the slot of the locking bar or dog until the slide is reciprocated. The engaging endof the'locking bar or dog has one arm 20 of a spring 21 bearing against it, and the other arm of the spring, which is substantially L-shaped,bears against a projection 22 of the outer end of the slide and is adapted to return the latter to its innermost position, as shown in Fig. 1 of the accompanying drawings, after the parts have been unlocked and the wrench removed. The lug 14, which may or may not extend into the guide-slot 15, is adapted to be engaged by a tapering arm or projection 23 of a wrench or tool 24, and when the device is in its engaging position the said lug 14. is located at the angle of the slot 15, which is substantially L-shaped, whereby the spring 21,yieldingly engaging the locking bar or dog, will cause the same to bear yieldingly against the bolt or spindle, the lug being adapted to play back and forth in the transverse portion of the slot 15. The slot may be varied in shape and the locking bar or dog may be provided with teeth that will prevent the nut from rotating in either direction when it is in engagement with a bolt or spindle. The nut is provided at one side with a socket, which is adapted to be engaged by a substantially L-shaped arm 26 at one end of the wrench 24, and the taperin g projection or arm 23, which is substantially L-shaped in cross-section, is composed of two sides or wings provided with beveled or inclined edges and adapted to be introduced into the L-shaped slot 15 to reciprocate the slide sufflciently to disengage the locking bar or dog from the bolt or spindle.

The flange or wing 2 extends laterally from the wrench at right angles to the other flange or wing of the projection or arm, and when the wrench is in engagement with the nut the latter may be unscrewed, the wrench operating as a handle or lever. When the wing 23 is employed, the lug 14 does not engage the L-shaped slot, so that the slide may move longitudinally of the locking bar or dog while the latter swings away from the spindle or bolt, the wing 23 being adapted to swingthelocking bar or dog away from the bolt or spindle and the other wing being adapted to reciprocate the slide. The flanges or wings may be proportioned and arranged to effect a reciprocation of the slide before the dog is swung away from the spindle, in order to withdraw the dog before such swinging movement takes place, and thereby prevent the spindle and the locking bar or dog from being injured. In order to provide an exceedingly inexpensive nut-lock, the locking dog or bar may be employed without the eccentric or cam and the slide, and in this construction the wrench will be provided between its ends with only one wing, arranged similar to the wing 23, and, if desired, more than one locking bar or dog may be mounted on a nut, so that the latter may be held against rotation in either direction, and any suitable form of spring may be employed.

The invention has the following advantages: The nut-lock is positive and reliable in operation and effectually prevents a nut from accidentally unscrewing. It will permit a nut to be rotated forward to tighten it, and a nut may be readily removed by the wrench without injuring any of the parts of the device or the threads of the bolt or spindle.

Changes in the form, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention, such as mounting the locking devices on a bolt or screw instead of upon a nut, as shown.

WVhat I claim is- 1. In a device of the class described, the combination of a reciprocating locking-bar designed to be mounted on a nut, bolt or spindle and adapted to prevent a nut from unscrewing accidentally,a pivotally-moun ted cam or eccentric engaging the locking-bar and adapted to reciprocate the same, and mechanism carried by the locking-bar for oscillating the cam or eccentric, substantially as described.

2. In a device of the class described, the combination of a reciprocating locking-bar designed to be mounted on a nut, bolt or spindle and adapted to prevent a nut from unscrewing accidentally, a slide mounted on the locking-bar, and a cam or eccentric connected with the slide and engaging the locking-bar, substantially as described.

3. In a device of the class described, the combination of a reciprocating locking-bar designed to be mounted on a nut, belt or spindle, a pivotally-mounted cam or eccentric engaging the locking-bar and adapted to reciprocate the same, and a slide mounted on the locking-bar and connected with the cam or eccentric, substantially as described.

4. In a device of the class described, the combination of a locking-bar, a pivoted cam or eccentric engaging the locking-bar and adapted to reciprocate the same, a slide mounted on the locking-bar and provided with an angularly-disposed slot or shoulder, and an arm extending from the cam or eccentrio and engaging the slot or shoulder, substantially as described.

5. In a device of the class described, the combination of a reciprocating locking-bar, a pivoted cam or eccentric engaging the locking-bar and adapted to reciprocate the same, a slide mounted on the locking-bar and con nected with the cam or eccentric, and a spring having one arm bearing against the lockingbar and another arm engaging the slide, substantially as described.

6. In a device of the class described, the combination of a reciprocating locking-bar provided with an opening, a pivoted cam or eccentric arranged in the opening, a slide mounted on the locking-bar and provided with an angularly-disposed slot, an arm rigid with the cam or eccentric and engaging the said slot, and a spring, substantially asdescribed. i

7. In a device of the class described, the combination of a nut, a reciprocating lockingbar mounted thereon and having a hookshaped engaging end provided with teeth and adapted to engage a bolt or spindle at differ- IO ing-bar and provided with an L-shaped slot adapted for the reception of a projection of a tool, substantially as and for the purpose described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in I 5 the presence of two Witnesses.

WILLIAM B. METCALF, JR. Witnesses:

CABLE NELSON, OLIVER M. DEAKIN.