US1200949A

US1200949A - Lock.

Info

Publication number: US1200949A
Authority: US
Inventors: Presley B Johnson
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-03-17
Filing date: 1916-03-17
Publication date: 1916-10-10
Anticipated expiration: 1933-10-10

Description

P. B.J0 HNSON.

I LOCK.

APPLICATION FILED MAR. 7, 1915. 1,200,949. Patented Oct. 10,1916.

2 SHEETS-SHEET lgwuenfoz Wil'naooeo 3 PL B. JOHNSON.

LOCK.

APPLICATION FILED MML 17, 1916.

1,200,949. Patented Oct. 10,1916.

2 SHEETS-SHEET 2.

Gttom 113 m: NORms PETERS cm, PNDTO-LITNQ. WASHINGTON, n..c

"UNITED STATES rA'rnN'r .oFnioE- I PRESLEY B. JOHNSON, OF SACRAMENTO, CALIFORNIA.

LOCK.

Application filed. March 17, 1916.

To all whom it may concern Be it known that I, PRESLEY B. JOHNSON, a citizen of the United States, residing at Sacramento, in the county of Sacramento and State of California, have invented certain new and useful Improvements in Locks; and I do hereby declare the follow ing to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same.

This invention relates to new and useful improvements in a lock and one of its objects is the provision of a device of this character, which shall be simple, durable and efiicient, and which may be manufactured and sold at .a comparatively low cost.

Another object of this invention is to provide a casing, having a pivoted shackle and a locking disk, which will automatically lock the free end of the shackle upon insert-' ing it within the casing.

A further object of this invention is to provide a novel means of locking the looking disk against rotation after the free end of the shackle has been inserted within the casing.

A further object of this invention is to provide means for releasing the locking means which holds the locking disk against rotation, whereby the free end of the shackle I may be withdrawn from the casing and the .i agmeat ryrhe V w. l tr ingl P- locking disk will return to its normal position.

A still further object of this invention is to provide means for operating a series of recording dials upon unlocking of the shackle, to indicate the number of times the lock has been opened or unlocked.

With these and other objects in view as -will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and cl aimed.

For a complete understanding of my in vention, reference is to be hadto'thefollowing description and accompanying drawings, in which Figure 1 is a front elevationofa lock, constructed in accordance with my inven tion. Fig. 2 is a vertical'sectional view of the same, illustrating the free end of the shackle locked within the casi g Fig, 3- is a Specification of Letters Patent.

Patented Oct. 10, 1916.

Serial No. 84,830.

crating disk and a guard disk. Fig. 4 is a bottom planview of the locking disk removed from the casing, illustrating the means of returning it to its normal position, Flg. 5 is a fragmentary vertical sectional view, taken on the line 5 is a vertical sectional view of one of the keys for unlocking the lock, Fig. 7 is a fragmentary plan view of the operating disk removed from the casing, and illustrating the guard for preventing an incorrect key from rotatlng it, and Fig. 8 is a vertical sectional vview of another key.

Referring in detail to the drawings, the numeral 1 indicates a casing, consisting of a bottom wall 2, end walls 3, top walls 4, a rear wall 5 and a front wall 6. Formed on one end of the top wall 4 is a pair of ears. 7, to which a shackle 8 is pivoted, having its free end reduced as indicated at 9 and 5 of Fig. 3, Fig. 6

adapted to extend into the casing 1 through an opening 10in the top wall 4. A lug 11 is ing withdrawn from the casing 1 A locking disk 13 is journaled on the stud shaft 1 1 and is provided with

arms

15, 16 and 17 thereon. When the reduced end 9 of the shackle 8 is inserted into the casing 1,

it engages the arm 15 and causes the locklng disk to rotate and the arm 15 to engage a stop 18 carried by one of the end walls 3. When the arm 15 moves in the direction of the stop 18, the arm 16 passes into the slot 12 of the reduced end 9 of the shackle. A. tumbler 19 is pivoted to the rear wall 5 and rests uponthe end of the arm 17 when the locking disk 13 is in an unlocked position,

and as the locking disk is rotated in theheretofore mentioned manner, the tumbler moves downwardly and engages the side of the arm 17 as illustrated in Fig. 2 and prevents the locking disk 13 from rotating in a reverse direction which is caused by the tension of a spring 20, that is embedded in a recess 21 upon the rear side :thereof and which engages a lug 22 carried by the rearwall 5,

secured to one end and which is bent back upon itself and secured to the pivoted end of the tumbler 19 for causing the tumbler 19 to engage the side of the arm 17 Q The arm portion 25 of the L-shaped bracket 23 provides a guard to prevent a person from tampering with the tumbler 19 when the shackle is in an unlocked positiom'and also provides a stop for preventing the locking disk 13 'from rotating ifflthestop 18 is bent or broken insome manner, while the shackle 8 is in an unlocked position, thus preventing the lock frombecoming useless. The tumbler 19 is provided with an enlarged portion 26 to provide an upwardly inclined working face 27 for a purpose which .will'be hereinafter more fullydescribed; I

. An operating disk 28 isjournaled on a stud shaft 29 carried by the rear wall 5 and is provided with a recess 30, similar to the recess 21 in the locking disk 13 to receive a spring 31, which engages a lug 32 carriedbythe rear wall 5. The operating disk 28' is provided. with a key slot 33 and a plurality of arcuate shapted slots 34, which intersect the keyslot 33. A plurality of guard pins are secured to the rear wall 5 and extend into the arcuate shaped slots 34 of the operating disk 28, to prevent said disk from being rotated by an incorrect key.

,, Secured to theoperating disk28, is anarm 36,1 having a rounded head 37 which engages the working face 27, to raise the tumbler 19 upwardly when the operating disk is turned by the key; 38, which consists of a bit 39, having lugs40 providing notches 41. The

- bit 39 ofthekey 38 is placed through the key-hole 43 of thefront wall 6 and within the key slot 33 upon the end of the stud shaft 291and the lugs 40 engage the portions that are indicated by thexnumeral 42 and by turning the. key to the right, the operating disk 28 is turned in'a similar direction causing the arm 36 toraise the tumbler 19- andtfree the locking disk 13.

The notches .41 in the bit 39 of the key 38 will allow thegkey to pass the guard P11181351. .After the locking disk has been freed, the shackle =8may be readily with drawn from the casing 1.

A stud shaft 44 is secured to the rear wall 5'and has journaled thereon a guard disk 45, Wl1lCl1 overlies a portion of the operatingdisk. 28.'-- The guard disk 45 is provided witha key slot46 and a projection 47.. A pluralityof guard pins 48 are secured to the front wallr6 and extend in" hole 43, to prevent theguard disk 45 from being operatedwby anincorrect key. Be fore theoperating di'sk12'8 can beturned to release the locking disk 13, by the key 38, it is necessary to turn the guard disk 45, so that the key slot 46 will be in registration with the key slot 33. In order to turn the guarddisk 45 to accomplish the above result, a key 49, having a recess 50 to receive the end of the stud shaft 44 and a bit 51 having a plurality of teeth 52 forming recesses 53., which allow the bit 51 to pass the guard pins 48 and the teeth 51, to engage the projection 47. By turning tlie'key 49 to the left, theguard disk 45 will be turned in the same direction to bring the key slot 46 into registration with the key slot 33. The key 49 is then turned to the right allowing the guard disk to remain stationary and is then Withdrawn from the casing 1. The key 38 is then inserted within the casing 1 and through the key .1

slot 46 of the guard disk 45 to engage the key slot 33 to turn the operating disk to the right for raising the tumbler 19 from an "engagement with the arm 17 to free the locking disk 13, whereby the shackle 8 may .i

be withdrawn from the casing 1.

A recording device is positioned within the casing 1 and consists of

dials

54, 55, 56 and 57, which are journaled within the easing land are. each provided with a scale running from zero to nine. The casing 1 is provided with sight openings 58, whereby the scale of the

dials

54, 55, 56 and 57 next numeral of the scale in registration with the corresponding sight opening 58' in the front wall 6' of the casing 1.

Pivoted to the arm 36 is a lever 62, which is supported by a yoke 63 carried bythe top wall 4. The free end of the lever 62 engages the teeth 59 of the dial54 and rotates said dial 54-when the operating disk 28 is turned to the right by the key 38 to unlock the locking disk 13. Thus it will be noted that the dial 54 is turned twice upon unlocking the lock once, whereby a person may determine if an unauthorized person has been tampering with the guard disk 45 or turning same and also it can be determined if the lock has been opened by an unauthorized person by keeping note of the numerals showing through the sight openings 58, when the look was last unlocked. j I

Secured to the front Wall '6 of thecasing 1 is a key-hole guard plate 64 Which is normally held over the key-hole 43 by a spring and a guard plate 66 is adapted to close .the openings 58 by the tension of a spring 67, to prevent dirt and other foreign matter from entering the casing 1.

While I have shown and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made without departing from the spirit and scope of the invention as claimed.

Having thus described my invention, what I claim is:

1. A lock comprising a casing, a shackle pivoted to said casing at one end thereof, the free end of said shackle reduced and inserted within the casing, the reduced free end of the shackle provided with an elongated slot therein, a locking disk journaled in said casing, three arms secured to said -disk, a stop secured to said casing adjacent the locking disk for engagement with the first arm when the second arm engages the elongated slot of the reduced free end of the shackle, means for engaging the third arm to prevent reverse rotation of the locking disk, and means for releasing the locking means to allow the locking disk to rotate in a reverse direction to allow the reduced free end of the shackle to be withdrawn from the casing.

2. A look comprising a casing, a shackle pivoted to said casing at one end thereof, a reduced extension formed on the free end of said shackle and adapted to extend into the casing, said extension provided with an elongated slot therein, a locking disk journaled in said casing, means carried by the locking disk for an engagement with the extension for rotating the locking disk when the extension is moved into the casing, means carried by the locking disk for extending through the elongated slot, an arm carried by the locking disk, a substantially L-shaped bracket secured to the casing to provide a guard for said arm, a tumbler pivoted to said casing and adapted to engage the arm to hold the locking disk against reverse rotation, and means for raising the tumbler from an engagement with the arm to allow the locking disk to rotate in a reverse rotation to free the extension of the shackle.

3. A lock comprising a casing, a shackle pivoted to said casing at one end thereof, an extension formed on said shackle and adapted to extend into the casing, said extension provided with an elongated slot therein, a spring pressed locking disk journaled in said casing, means carried by the locking disk for engaging the end of the reduced extension for rotating the locking disk when the extension is inserted within the casing, means carried by the locking disk for engaging the elongated slot in the extension, an arm formed on the locking disk, an- L-shaped bracket secured to said casing, a tumbler journaled in said casing, a leaf spring secured to one end of the L-shaped bracket and bent intermediate 1ts ends and secured to the tumbler for holding the tumbler into an engagement with said arm, and means for raising the tumbler against the tension of said spring for allowing the locking disk to rotate in a reverse direction.

4:. A look comprising a casing, a shackle pivoted to said casing at one end thereof, an extension formed on said shackle and adapted to extend into said casing, a spring pressed'locking disk journaled in said casing, means carried by the locking disk for detachably securing the extension 'to the locking disk, a spring pressed tumbler pivot ally secured to the casing for preventing reverse rotation of the spring pressed locking disk, an operating disk journaled in said casing, an arm carried by said operating disk for an engagement with the tumbler, and means for rotating the operating disk to raise the tumbler to allow the locking disk to rotate in the reverse direction.

5. A look comprising a casing, a shackle pivoted to said casing at one end thereof, an extension formed on said shackle and adapted to extend into the casing, a spring pressed locking disk journaled in said casing, means carried by the locking disk for detachably securing the extension to the locking disk, an arm secured to the locking disk, a spring pressed tumbler pivoted to said casing and adapted to engage the arm to prevent reverse rotation of the locking disk, a spring pressed operating disk journaled in said casing, an arm formed on said operating disk for an engagement with the tumbler, said operating disk provided with a key slot and a plurality of arcuate slots, a plurality of guard pins carried by the casing and extending into the arcuate slots, and a key for rotating the operating disk to raise the tumbler and allow the locking disk to rotate in areverse direction.

6. A look comprising a casing, a shackle pivoted to said casing at one end thereof, an extension formed on said shackle and adapted to extend into the casing, a spring pressed locking disk journaled in said casing, means carried by the locking disk for detachably securing the extension to the locking disk, an arm secured to said locking disk, a spring pressed tumbler pivoted to said casing and adapted to engage the arm to hold said spring pressed locking disk against reverse rotation, a spring pressed operating disk journaled in said casing, an arm secured to said operating disk and en gaging the tumbler, said operating'disk pr0- vided with a key slot, a guard disk journaled ili lsaid c asing and overlying a portion of to record the number of times the operating the operating disk,*sa1d guard disk prodisk and the guard disk are rotated. 10

into registration With the key slot of the in presence of two Witnesses.

yided vith'a key slot adapted to be brought In testimony whereof I afiix my signature operating disk, means for rotating the PRESLEY- B. JOHNSON. guarddisk and the operatingdisk, and a Witnesses: recording means operatiyely Connected to JO N BENZ, thefoperating disk 'and to the guard disk E. J. RADER.

Qopiesot-tmapatent may benobtainedifor five cents each by addressing the "Commissioner 01 Patents,

v a I i i Washington, D. c. I