US1825467A - Keyless lock - Google Patents

Description

Sept. 29, 1931. E. M. MILLER 1,825,467

KEYLESS LOCK Filed July 12. 1929 gjwuantoc 5/ 1. Miller Patented Sept. 29, 1931 UNITED STATES PATENT orricu- EDWARD M. MILLER, or KENT, onIo, Assrenon re .13. MIZLER Keynes's LOCK COM- Perry, on KENT, onto, a oonronarrou KEYLESS LOCK Application filed July 12,

This invention relates to keyless locks having a permutation mechanism for causing unlockingof the same wherein the unlocking action setsthe mechanism of the lock to be looked upon closing. of the shackle member.

This mode of'operation is highly desir able since if the lock is merely closed, and the owner thereof, through negligence or otherwise, should fail to turn the knob, any

1 unauthorized person who should happen to pull on the lock, would open the same.

The object of my invention, therefore, is to devise a mechanism which will cause the locking member that engages theshackle to '15 move into locked position incident to opening of thelock. When a lock wherein my novel mechanism has been incorporated, is properly operated to unlock the same, opening of the lock causes the locking member thereof to move into locked position, and subsequent closing of the shackle causes the same to be locked. If it is desired'to open the look again, it will be necessary to turn the operating member in the proper directions and the 2 proper distances just the same as if the operating member hadbeen moved to lock the 7 look. i To be more specific, I employv a locking member which is constantly urge-d to a locked position by means of a spring. An actuating arm is moved by a cammed member into engagementwith the locking member to move it into unlocked position against the'action of the aforesaid spring.

a point removed from the pivotal point of the shackle with respect to the casing of the lock. The locking member having been moved to unlocking position, it is then possi- 4O ble to move the shackle out of the casing to unlock the lock. Movement of the shackle about its pivotal point will cause a substantially lateral movement of the actuating arm, whereupon the same will move off the cam and the locking member will be restored to its locked position by the action of the spring. If the shackle is then moved back into the casing, it will be held there by the locking member.

56 It can thus be seen that by using my novel One end of the actuatv 35 ing arm is pivoted to the shackle of the look at 1929. Serial No. 377,812,

mechanism, it is impossible to leave a lock of the keyless type in a closed position without looking the same- Further and more detailed objects and advantages of my invention will appear as the description thereof proceeds. V

For a full and more complete understanding of the invention, reference may be had to the following description and accompanying drawings, in which Figure 1 is aside view of the inside of a lock made in accordance with my invention. Figure 2 is a view similar to Figure 1, showing the shackle released from the casing and the locking member in locked position, the dotted lines showing the shackle in locked position. c

Figure 3 is a detailed perspective view'of the locking member and spring associated therewith. i V Figure 4 is a detailed perspective view of the shackle and actuating arm associated therewith. V U Figure 5 is a side viewof the other half of the casing and parts associated therewith.

While a preferred, specific embodiment of my invention is hereinshown, it is to be understood that I am not to be limited to the exact construction illustrated and described, because various modifications of the same may be employed in putting the invention into practice withinthe purview of the appended claims. p

In the present instance my invention is shown associated with the well know keylesslock comprising a casing which includes the members 1 and 2. A rotatable member 3, mounted on the casing member 1 has various cam surfaces aiiixed thereto-forthe operation of the lock as :is well understood. The usual springs is associated with the easing 1 and cooperates with notches 5 in the rotatable member 3. The spring 6 engages the-end of a shackle"? to hold the same in its open and closed positions.

The shackle 7 "is substantially U-shaped and is pivoted to the members 1 and 2 as shown-at 8. V The other end of the shackle 7 is formed with a hook member denoted 9 An actuatingarni 10 is pivoted to the shackle 7 at 11, which point is removed from the pivotal point 8. The opposite end of the arm 10 is formed with a projection 12 and has a pin 13 secured thereto for cooperation with the cams on the member 3.

A locking member 14 comprises a flat quadrant shaped portion having flanges 15 and 16 on two of its sides. The locking member 14; is pivoted to the casing member 1 at 17. The flange 16 has a portion 18 upraised therefrom and receives one end of a spiral coil spring 19, the other end of which abuts the casing of the lock.

The lower end of the flange 15 engages the hook 9 of the shackle 7 under influence of the spring 19 and the proj ect-ion 12 of the arm 10 is adapted to engage the under side of flange 16 upon proper operation or" the rotatable member 3 to move the flange 15 out of engagement with the hook 9. Two spring members 20 and 21 secured to the casing member 2 at 22 are adapted to bear against the arm 10 and spring 4 respectively when the parts are assembled.

The operation of the lock is as follows The member 3 is rotated back and forth a certain number of times and for a certain distance, according to the manner in which the cams thereon were placed so that the cam denoted 23 engages the pin 13, moving the arm 10 which causes the proj ection 12 to rotate the locking member 14 in a clock-wise direction against the action of the spring 19. This position of the parts is shown in Figure 1 and the shackle may now be moved from the ca sing. IVhen the shackle is moved from the casing it pivots about the point 8 as previously set forth, which action causes the arm 10 to move in a substantially horizontal direction. This horizontal movement of the arm 10 brings the pin 13 out of engagement with the cam 23, whereupon the spring 19 which has been compressed, will now expand, rotating the locking member in an anti-clockwise direction, whereupon it will assume a position as shown in Figure 2. If the shackle is now moved in the position shown in dotted lines in Figure 2, hook 9 will once again be engaged by the lower extremity of the flange 15, thereby locking the-lock.

It can thus be seen that it is impossible to close the shackle of my novel lock without locking the same. Having once moved the shackle to its closed position, it is once again necessary to turn the rotatable member 3 through the proper combination before the shackle can again be opened.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is

1. In a lock of the class described, the combination of a casing, a shackle pivoted thereto near one of its ends, the other end being movable in and out of the casing, means for locking the movable end of the shackle in the casing, and mechanism for moving said locking means to unlocked position, said mechanism including an arm pivoted to the shackle at a point removed from the pivotal mounting of the shackle on the casing, said arm being operable upon movement of the shackle to allow the locking means to move to locked position.

2. In a lock of the class described, a casing, a shackle movable in and out 01'? the casing, a locking member, an actuating means therefor, a cam for moving the actuating means into engagement with the locking member to move the same to unlocked position, and mechanism associated with the shackle and actuating means and operable incident to movement of the shackle for moving the actuating means away from the cam to allow the locking member to move to locking position.

In a lock of the class described, a casing, a shackle movably mounted in said casing, a locking member, an arm movably mounted on the shackle for actuating the locking means,

a manually operable rotary means for operating the movable arm to cause release of the locking means, said shackle being operable to shift the movable arm upon unlocking action and to cause said locking means to subsequently become effective to lock the shackle. when the shackle is moved to closed position.

4. Ina lock of the class described, a casing, a shackle pivoted to said casing and movable to locking and unlocking position, a locking means for retaining the shackle in locked position, an actuating arm for the locking means, said arm being pivoted to the shackle and shiftable incident to opening and closing movement thereof, actuating means for causing said arm to move the locking means into unlocking position, said actuating means being rendered ineffective to permit the locking means to become efiective upon shifting of the arm incident to the opening movement of the shackle.

5. In a lock of the class described, a casing, a shackle movably mounted on the casing, a locking means for the shackle, a movable arm pivoted to the shackle and adapted to be moved thereby, a rotary member for actuating the arm to cause release of the locking means, said arm being movable by the shackle upon opening movement to cause the engagement thereof with the rotary member, to per mit the locking means to become ei'l'ective to lock the shackle upon closing movement l thereof.

In testimony whereof I aflix my signature.

EDl VARD M. MILLER.

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