US1010109A

US1010109A - Nut-lock.

Info

Publication number: US1010109A
Application number: US57075410A
Authority: US
Inventors: John A Badger
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-07-07
Filing date: 1910-07-07
Publication date: 1911-11-28
Anticipated expiration: 1928-11-28

Description

J. A. BADGER.

NUT LOCK.

APPLICATION YILED JULY 7.1910

. Patented Nov. 28,1911.

1 I Hull" "HIHH-HWHI" I INVENTOR (Lennon.

JOHN A. BADG B, OF ELLVOOD CITY, PENNSYLVANIA.

Nor-Look.

Specification of 'Letters Patent.

' Patented Nov. 2 ,1911.

Application filed July 7, 1910. Serial No. 570,754.

cited which of simple construction, inexpensive to munufucture, which can be reedily applied and also readily removed, end which will securely hold the not against turning on bolt.

The invention comprises the construction and arrangement of parts hereinafter described and claimed. 7

Int-he accompanying drawing Figure 1 is side view of a bolt showing the nut and locking means in position, the nut and locking nieuns'being in section; Fig. 2 is on end view of nut; Fig. 3 is a. transverse section through the locking key and the cooperating portions of the nut sud bolt; Fi a. detail side view of the locking key; end Fig. is :1 side view of a'modified form of lockin key showing its condition prior I to application.

In the drawing 1 represents a bolt provided with screw threads 2 receiving the out 3. The bolt and nut be of any cesircd construction and of any desired. size and form. in carrying out my invention he bolt not modified in any particular,

' uudthe nut is merely modified to the extent of being provided with u groove 4c opening nto bore of the nut and extending paruilel to the axis of said bore. The locking member comprises a. key 5 which is adapted to be driven into the groove in the nut after the latter is on the bolt and bite into or grip the threads of the bolt and thereby hold the nut against rotation This key is preferably provided with an acute edge or edges to enable it to more readily bite into or grip the threads of the bolt. As shown in the drawing, said key is grooved on its inner face, as at (5, so as to provide two acute edges 7 which cut into the threads of the bolt and prevent the nut from working loose. The outer end of the key is preferably turned at right angles, as at 8, to lie against the outer face of the nut and present a gib or head to facilitate the driving of the key and also for engagement a claw implement or the by causing the cutting edges 7 at the p01 like, to enable the key to be drawn out when it is desired to remove the nut.

The key 5 shown-in Fig. 5, is bent between its inner and outer ends, the bending being preferably/"somewhat closer to its 111- nor endthun to its outer end, so that'in its normal or unused condition there is sportion, as at 16, lying inside of the inner longitudinal face of said key; When the key- 18' driven into place the point 11 rides along the bottom of the groove in thenut, there-;

mi 10 to more effectively bite into the threads of the bolt. The key is made of spring or resilient metal and this curved contour also assists in looking the key from accidental outward escape in case it should be slightly smaller than the groove in the nut.

The key shown in Fig. '5 is provided on its inner face with transverse grooves or notches 9, which when the key is driven in place will, due to the resiliency of said bent key, engage the threads of the boltundprevent accidental escapement of the key even.

ifthe latter does not have a tight or driven fit in the groove in the nut.

The groove in the nut and the hey are of substantially the some cross sectional contour. This may vary within wide limits. Preferably the groove is of'concave shape in cross section, slightly more than semicirg,

culur, as illustrated, and the key of substantiully circular cross section except for the groove (5 on'the inner face.

With the form of key shown it is not necessary that it have a tight fit in the groove,

since any tendency of thenutto turn on. the

bolt will. cause a rotation of the key in the groove and cause either one or the other cutting edge to bite into the threads. Forthe.

same reason the key neednotbe made so large that its edges will materially distort.

the threads, us the locking effect would be secured in the manner stated whenever an effort was made to turn the nut. The consequence is that whilethe key will. 'efiectually lock the nut against accidental turning, it does not distort the threads so as to preventthe bolt and nut being used repeatedly. The opposite walls of the groove ere parallel, and the opposite sides of the key are gin likewise parallel so that no wed ging action:

is secured when driving the key in place.

In munufacturm the bolt and nut are made in the usual way. vThe groove i is I vent looseness in bolts.

formed by the punch which punches the hole in the nut blank, it merely being necessary to provide the punch on one side with a rib formed to the shape of the desired groove. The tapping of the nut does not affect this groove. As a consequence there is absolutely no additional cost .in the manufacture of the bolt and nut. The key Will preferably be made from a heavy steel wire which can be drawn with the groove 6 in one face so as to provide the ribs or acute edges 7 The provision of this groove in the act of drawing the wire adds practically nothing to its cost. The keys are made from such wire by simple cutting and bending operations, as will be readily appreciated, so that their cost is practically no more than that of small nails. The nutlock described can therefore be manufactured at a very reasonable cost. It

-'is of very simple construction, effectively holds the nut against turning on the bolt,

' can be readily applied, and can be as readily removed to ermit the nut to be taken from the bolt. T e acute edges of the key do not distort the bolt threads, or at least so little that the nut can'be taken off with an ordinary wrench. p

The key is not applied until the nut is turned fully to the desired position. The

lock will bite the bolt at any point around the circumference of the latter, so that it is possible to draw the nut fully home and pre the parts secured by the What I claim is: 4 1. A nut lock comprising a nut provided with a groove parallel to its axis, and a key arranged to fit in said groove and provided at each of its inner longitudinal edges with an acute edge arranged to bite the threads of the bolt, said key and groove being of sub stantially uniform cross section throughout and being of such shape in cross section that the key can be rocked on a longitudinal axis.

2. A nut lock comprising .a nut provided with a groove parallel to its axis and concave in cross section, and a key arranged to be driven into said groove, said keybeing of substantially circular shape in cross section and provided with a longitudinal groove on its inner edge to form'aplurality of acute edges arranged to bite the threads of the bolt.

A nut lock comprising a nut provided with. a groove parallel to its axis, and a key arranged to be driven into said groove, said key in its normal state being bent to provide intermediate its ends a portion projecting toward the axis of the nut and arranged to bite the threads of the bolt.

4-. A nut lock comprising a nut provided with a groove parallel to its axis, and a'key arranged to be driven into said groove, said key being longitudinally grooved on the face toward the axis of the nut to provide a plurality of acute edges,- and being bent intermediate its ends to provide a portion projecting toward the axis'of the nut.

5. A nut lock comprising a nut provided with a concave groove parallel to its axis, and a-key arranged to be driven into said groove, said key being of substantially circular cross section and longitudinallygrooved on its inner face and having its outer end bent at substantially a right angle to its body. E

6. A nut lock comprising a nut provided with a groove parallel to its axis, and a key arranged to be driven into said groove, said key being formed.of resilient metal and longitudinally grooved on its'inner face and bent intermediate its ends to project a porticn toward the axis of the nut.

7. A nut lock comprising a nut provided with a groove parallel to its axis, and a key arranged to be'driven into said groove, said key in its normal state being bent to provide intermediate its ends a portion projecting toward the axis of the nut and being pro. vided on its inner face with transverse grooves or notches and with a plurality of longitudinal acute edges arranged to bite the with a groove parallel to its axis and concavein cross section, and a key arranged ta be driven into said groove, said key being substantially circular in cross section and provided with a longitudinal groove on its inner face to form a plurality of acute edges arranged to bite the threads of the bolt, said key being formed of,resilient metal and bent intermediate its ends to project a portioi. toward the axis of the nut.

In testimony whereof, I have hereunto set my hand.

JOHN A. BADGER. Witnesses:

H. D. WIMER, W. F. ST. CLAIR.