US1320806A

US1320806A - Permutation-lock

Info

Publication number: US1320806A
Authority: US
Publication date: 1919-11-04
Anticipated expiration: 1936-11-04

Description

J. R. SUNGAIL.

PERMUTATION LOCK.

APPLICATION FILED MAY 18. 1915.

1 ,320,806. Patented Nov. 4, 1919.

ATTOR N EY JOHN R.v SUNGAIL, OF GICERO, ILLINOIS.

PERMUTATION-LOCK.

menses.

Specification of Letters Patent.

i Patented Nov. 1, 1919.

Application filed May 18, 1916. Serial No. 98,375.

To all whomz't may concern:

Be it known that I, JOHN R. SUNGAIL, a citizen of the United States, residing at Cicero, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Permutation-Locks, of which the following is a specification.

This invention relates to locks and more pail'lzicularly, to an improved permutation loc More particularly, this invention has reference toan arrangement of the tumbler plates and the locking bolt, which, when 1n proper position, will permit movement of the locking bolt, either to a locked or unlocked position.

A further improvement resides in the provision of a construction of operating knobs, whereby, when the lock is used in conjunction with a. door, the same may be actuated from the inside, irrespective of the tumbler plates.

Other improvements and novel details in the construction and arrangement of parts will be appreciated from thedetailed description below, which is to be read in connection with the accompanying drawings forming a part thereof, and wherein I disclose preferred embodiments of the invention for the purpose of illustration.

In the drawings,

Figure 1 is a section on the line 1-1 of Fig. 2, the bolt casing being shown in full lines,

Fig. 2 is a transverse section through the lock showing it applied to a door,

Fig. 3 is a rear elevation showing the knob whereby the lock may be actuated from the inside,

Fig. 4: is a longitudinal section through the bolt casing illustrating the mounting and construction of the sliding locking bolt.

Referring more particularly to the. drawings, wherein like reference numerals refer to corresponding parts throughout the views, I provide a circular supporting base 1 having its upper marginal edge beveled and provided with an annular flange 2. A

V plurality of interiorly threaded openings 3 are arranged in the base 1 and have bolts.

4 engaged therewith. The bolts 4: are in turn engaged with the flanges 5 of a bolt casing 5, thus permitting the bolt caslng and base 1 to be affixed to the door or other object, as designated at 6. A sleeve 7 is formed upon the supporting base 1 and has arranged thereupon a circular flange 8; The

sleeve has formed therein a longitudinal slot 7, the purpose of which will be subsequently apparent. A plurality of apertured rotatable tumbler plates indicated by the

numerals

10, 11 and 12 are arranged about the sleeve 7 and are of various sizes, so as to constitute, when in position, a substantially frusto-conical body. The outer marginal edges of the

tumbler plates

10', 11 and 12 are beveled and provided with annular flanges generally indicated at 13, similar to flange 2 as formed upon the circular base 1. These flanges form seats for the tumblers. To insure independent rotation of the various tumbler plates, Washers 11 are inserted therebetween. To provide antifrictional bearings, complementally disposed grooves are arranged in the adjacent faces of the tumbler plate 12 and the flange 8 in which balls 15 are placed. Rings 16, '17 and 18 are split so that the ends of each ring at the split are spaced apart to form a way. The rings are carried within the apertured

tumbler plates

10, 11 and 12, as shown in Fig. 2- the purpose of which will be hereinafter described.

A rotatable spindle 19 is carried by the door 6 and has arranged thereupon a flanged collar 20, which collar is engaged with the circular base 1 in such manner as to permit of its rotation and prevent longitudinal movement thereof. The portion of the spindle 19 in front of the collar 20 is substantially oval in cross section and has formed thereupon a pair of arcuately shaped

arms

21 and 21, which are rotatable inside of the sleeve 7. A head 22 having a beveled inner surface is arranged upon the extremity of the oval portion of the spindle-19. A

knob which is formed on the head 22 provides a means for rotating the spindle. A dog 2-1 is movable into the space 9 formed by the alined ways in the rings 16,17 and 18. It will be, observed in Fig. 2, that the dog 24; is equal in length to the space 9. The dog 2% is beveled on the front edge and bears against the beveled inner surface of the head 22. The beveled front portion of the dog 2% merges with a heel 24: which is adapted to ride beneath the similarly beveled under portion of one or the other of the arcuately shaped

arms

21 and 21.

The oval end of the spindle 19 is adapted to act as a cam on the dog 24. When the ways of the rings 16, 17 and 18 are in alinement to form the space 9, the spindle 19 may be rotated because the dog 2 1 will move upwardly into the slot 9. It will be observed in Fig. 1, that the arcuately shaped arms 21 and 21' are formed parallel with the curvature of the oval along the major axis. It therefore follows that when the spindle 19 is rotated, the dog 2% will not be elevated until the end of the oval strikes the 'dog. This occurs at the same time that one or the other of the

arcuate arms

21 or 21 move out of engagement with the dog. The spindle 19 may thus rotate freely and the dog 2% will simply reciprocate as the high and low portions of the oval move thereunder.

A pinion 25 is carried upon the opposite extremity of the spindle 19 and has formed thereupon a hollow cylindrical knob 26. It will be noted that, that portion of the pinion 25' adjacent to the, knob 26, is stepped, to permit the ournaling thereof within the outer wall of the bolt casing 5. A stop pin 27 is carried upon the inner face of the knob 26 and is engaged by a disk 28, which disk is secured to the spindle 19 by a set screw 29. A portion of the disk 28 is cut away to provide shoulders 30 and 30 for engagement with the stop pin 27.

Inasmuch as the pinion 25 and its knob 26 are loosely mounted upon the spindle 19, it will be apparent that when the knob is turned and the stop pin 27 is engaged with one of the shoulders 30 or 30, its movement will be stopped. However, it will be noted, that during the movement of the knob the pinion will be rotated, and thus cause the sliding bolt, which will be hereinafter described, to be moved to a locked or unlocked position.

A bolt 31 1s slidably mounted wlthin the casing 5 and comprises a body having one end thereof reduced to provide an extension 32 adapted to engage a keeper and a laterally extended arm 33 having av rack arranged upon its lower face. The rack arm 33 has a supporting leg 3% formed thereon, whereby the arm may at all times be held in close engagement with the upper portion of the casing 5. 'A slot 35 is formed in the extremity of the arm 33 and receives thereinto a pin 36, which pin, is carried by the casing 5 and against which abuts one end of an expansible coiled spring 37, the remaining end of the coiled spring being engaged with the rear wall of the casing 5. It is to be also noted, that the rack formed upon the lower face of the arm 33, is constantly enmeshed with the pinion 25.

The beveled portions of the

tumbler plates

10, 11 and 12 and the base 1 has graduations. The graduations allow the tumblers to be moved to a position whereby the ways of the rings 16, 17 and 18 may be. moved into an alined position with each other. To denote the zero point,'the beveled portions of the tumbler plates have pins 38.

To operate the bolt 32 from the inside, irrespective of the combination, it is only necessary that the knob 26 be turned, which movement will be transmitted to. the elongated gear 2-5 which is enmeshed with the rack as arranged upon the lower face of the arm 33 and thus cause that member to be retracted or moved to its distended position.

I therefore particularly point out p and distinctly claim as my invention:

In a device of the character described, the combination of asupporting means, a rotatable spindle carried by said supporting means, means for rotating said spindle, an arcuate arm formed on said spindle, said arm having a curved channel portion formed in its front surface adjacent the surface of said spindle, an elongated dog resting upon said arm and engaging the front and rear surfaces thereof, the said dog having a heel upon its front portion fitting within the channel of the said arm, means for holding said dog against side movement and rotatable tumbler plates having receiving ways therein, whereby when the tumblers are moved to bring the ways into alinement with the dog, the spindle ma I be rotated and move the dog into said ways, although when said spindle is rotated to its original position the engagement of the arm with he heel of the dog will retract the dog from said ways, thus permitting the tumblers to be easily turned to again lock the device.

In testimony whereof I affix my signature in presence of two witnesses.

' JOHN R. SUNGAIL. Witnesses:

R. ANDERSON, W. L. CUREToN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, I). C. i