US1083226A - Combination-lock. - Google Patents

Description

H. 0. STEVENS. COMBINATION LOOK.

APPLICATION FILED MAY 14, 1912.

1,083,226. Patented Dec.30,1913.

ATTORNEYS- COLUMBIA PLANOGRAFH CO. WASHINGTON. D. C.

HANSIEORD C. STEVENS, OF JENKINS, KENTUCKY.

COMBINATION-LOCK.

Specification of Letters Patent.

Patented Dec. 36, 1913.

Application filed May 14, 1912. Serial No. 697,208.

To all whom it may concern Be it known that I, HANSFORD C. S'rnvnNs, a citizen of the United States, and a resident of Jenkins, in the county of Letcher and State of Kentucky, have invented certain new and useful Improvements in Combination-Locks, of which the following is a specification.

My invention is an improvement in combination locks, and has for its object, the provision of a simple inexpensive lock of the character specified, wherein a plurality of tumblers is arranged between the bolt and the rotating operating knob having means for engaging. and moving the bolt when moved toward the bolt, the knob also having means for engaging and turning the tumblers, to bring them into position to permit the passage of the engaging means of the knob.

In the drawings: Figure 1 is a front view of the lock showing the dial; Figs. 2 and 3 are sections on the lines 2-2 and 3-3 of Fig. 1; Figs. 4 and 5 are sections on the lines l-1 and 5-5 of Fig. 2; Figs. 6 and 7 are sections on the lines 6-6 and 7-7 of Fig. 3. Fig. 8 is a section on the lines 8-8 of Fig. 5; Fig. 9 is a section on the line 9-9 of Fig. 4; and, Fig. 10 is a sectional view, showing a modified form of bolt.

In the present embodiment of the invention, an escutcheon 1 is provided, having a central opening 2, and a cup-shaped casing 3 is arranged over the opening, the casing having a flange 4 lapping on the edge of the opening and secured thereto by rivets 5. The casing has a central inwardly extending hub or boss 6, and a disk 11 having a knob 7 provided with a central stem 8, which extends into the hub, and is held in place by a radial pin 9 in the hub, which engages between the end of the stem and the head of a screw 10, threaded into a recess in the end of the stem. The disk may thus be rotated in the hub by means of the knob. A tumbler consisting of a portion 12 and a base or portion 13 is provided, the portion 12 of the tumbler having one of its edges received in the annular space between the outer edge of the disk and the edge of the opening, and having its other edge secured to the edge of the portion 13 of the tumbler. The said portion 13 encircles the hub and the tumbler is rotatable on the hub.

Screws 14 are provided for holding the portion 12 of the tumbler to the portion 13,

and a second tumbler 15 is seated on the innor face of the portion 13 of the first tumbler. The said tumbler 15 has an arc-shaped slot 16, and an annular series of openings 17, and a single opening 18, just outside the series 17. A pin 19 extending inwardly from the portion 13 engages the slot 16, to limit the angular movement of the tumbler 15, with respect to the portion 13.

The escutcheon 1 is provided with an arcshaped series 20 of indicating characters, numerals in the present instance, the said series being a semi-circle. The portion 12 of the first tumbler has the edge between the disk 11 and the escutcheon provided with a series of characters 21, also numerals. The outer edge of the disk is also provided with a series 22 of characters, letters however instead of numerals.

A coil spring 24 encircles the stem 8 and the hub 6, between the disk 11 and the tumbler 15. The spring acts to hold the disk and tumbler portion 13 in spaced relation, and the knob 7 may be depressed to approach the portion 13. The disk 11 is pro vided with a pair of lateral inwardly extending pins 25 and 25 each having its in ner end reduced, as shown in Fig. 3. The pin 25 is of greater length and nearer the center than the pin 25 The pin 25 is adapted to engage one of the openings 17 of tumbler 15, and the pin 25 the opening 18 of the said tumbler.

The bolt of the lock is in the form of a yoke or fork, comprising a body 27, and arms 28 and 28 The arms 28 and 28 embrace the hub 6, and the body 27 is provided with a reduced extension 29, passing through an opening or slot 30 in the casing 3. The shoulders formed by reducing the extension limit the outward movement of the bolt. Theportion 13 of the tumbler has openings 31 and 31 the former registering with an opening of series 17 and the latter with opening 18 of tumbler 15. The pin 25 will pass through an opening of series 17 when the knob is depressed, and the opening 31 of portion 13, and will engage the opening 32 of the arm 28 of the bolt. The pin 25 will engage and pass through opening 18 of tumbler 15, and opening 31 of the base 13, and will not touch the arm 28 of the bolt. A spring 33 is connected at one end to casing 3, as shown at 34, and the other end of the spring engages the arm 28 of the bolt, and the said spring acts normally to hold the bolt which is of approximately the same height as the knob when the knob is in normal posi tion. The rib thus acts as a shield to protect the knob and the indicating characters of the disk from injury.

The operation of the lock is as follows: For instance, to unlock with the combination A, 16 and 5, the disk is depressed until the pin 25 engages one of the openings 17 of the tumbler 15. Since the pin 25 is of greater length than the pin 25*, the said pin 25 will engage the tumbler 15 before the pin 25 engages any portion of the locking mechanism. The knob 7 is then turned to the right, and the tumbler 15 is turned in the same direction, until the pin 19 engages the end of the slot 16. As soon as this engagement between the pin 19 and the end of the slot 16 takes place, the tumbler 15 and the tumbler 12 turn together. The turning of the disk 7 to the right is continuous, the said disk carrying in its movement the tumblers 15 and 12 until the numeral 16 of the series 21 is in register or in radial alinement, with the numeral 5 of the series 20. The disk 7 is now turned to the left one point, that is, the distance between two numerals of the series 20. This movement of the disk to the left moves tumbler 15 in the same direction but does not move tumbler 12, since the pin 19 may move the length of the slot 16 of the tumbler 15, before the tumbler 15 would partake of the movement of the disk to the left. The above mentioned moving of the disk to the left, moves the tumbler 15 to the left just far'enough to bring the pin 19 to approximately the center of the slot 16. The tumbler 15 is now in such position that the opening 18,0f the said tumbler is directly above the opening 31 of the tumbler 13. That opening of series 17 which is diametrically opposite the opening 18 is also directly over the opening 31. The registering openings 1831" and 1731 are now in position to receive the pins 25 and 25 and after the knob 7 has been turned back the single point above mentioned, it is released, and the spring 2t moves the disk outward or away from the tumblers to its normal position. In this position, that is, in normal position, the disk does not engage any of the locking mechanism and may be turned freely in either direction without interfering with the said locking mechanism, that is, the tumblers 12 and 15 Nhile in normal position, the said knob 7 is turned in either direction to bring the numeral A in radial alinement with the numerals 16 and 5, thus bringing the pin 25directly over the registering openings 18 and 31 The disk is now depressed to cause the pin 25 to pass through the openings 18 and 31 and into the opening 32 or 4:6 as the case may be, of the bolt 27 or 37. The pin 25 passes through the opening 31 and that opening of series 17 which is in register therewith. The free end of the pin 25 bears against the upper face of the belt at a point diametrically opposite the engagement of the pin 25 with the opening 32 or 46, and acts to balance the bolt to prevent rocking thereof, while the knob 7 is turned to retract or withdraw the bolt.

In Fig. 10 is shown a modified form of bolt, adapted for chests, and for other forms of receptacles, wherein the lock and keeper move directly away from each other instead of laterally. The said bolt 37 is provided with a catch 38 at its outer end, and extends through a slot 39 in the casing 40. The slot is of greater length than the width of the bolt, so that the bolt may swing laterally. A spring a1 holds the bolt to one end of the slot, and the outer end of the bolt is beveled at 42, so that when engaged with a keeper, the bolt will be moved laterally against the resistance of the spring. The bolt is provided with a bearing 43, encircling the hub 6, corresponding to hub 6, and is held in a bearing 4:4: riveted to the casing at 45. The keeper is not shown, since it forms no part of the invention and may be of any usual or desired. construction. The bolt extends beyond the bearing 44 at the inner end, and is provided with an opening 46, for receiving the pin 25 of the disk, to operate the bolt. The casing is also provided with the lugs 47, corresponding to lugs or pins 35, for holding the tumblers in spaced relation. In operation, the disk is operated in precisely the same manner, and the pin 25 engages the opening 46 and swings the outer end of the bolt laterally, to release the catch, instead of moving the bolt longitudinally, as in the first mentioned embodiment.

I claim:

1. A lock of the character specified, comprising an escutcheon having a central opening, a cup shaped casing secured to the escutcheon at the opening and provided with a central internal hub, a tumbler in the easing, said tumbler comprising a ring having one edge flush with the edge of the opening and a base secured to the ring and rotatable on the hub, a disk fitting within the tumbler and having a stem journaled in the hub and having a central knob extending in the opposite direction from the stern, a rotatable connection between the stem and the hub, a second tumbler journaled on the hub between the disk and the base of the first tumbler, said second tumbler having an annular series of openings and a single opening outside the series, the first tumbler having oppositely arranged openings in its base for registering with an opening of the series and with the single opening, the disk having laterally extending pins for engaging the openings, one of the pins being nearer the center of the disk for engaging an opening of the series and of greater length for extending through both tumblers, a bolt slidable in the casing between the casing and the adjacent tumbler and having an opening for engagement by the last named pin, a spring for holding the bolt in adjusted position, the escutcheon having an arc shaped series of indicating characters adjacent to the opening, the first tumbler and the disk each having an annular series of characters for registering with each other and with the characters of the escutcheon, a spring pressing the tumblers and the disk away from each other, and means for limiting the movement of the last tumbler with respect to the first tumbler.

2. A lock of the character specified, comprising a casing having a circular opening, a disk in the opening, an annular or ring shaped tumbler encircling the disk within the opening, a disk shaped tumbler within the first tumbler, means for limiting the angular movement of the tumblers with respect to each other, said second tumbler having an annular series of openings and an opening outside of the series, pins extending inwardly from the disk for engaging an opening of the series and the single opening, one of the pins being of greater length than the other pin, the first tumbler having means for engagement by the last named pin when the disk is in a predetermined position with respect to the casing, the disk being movable laterally toward the bolt, a spring pressing the disk away from the bolt, and a spring for holding the bolt in adjusted position, said disk having a knob for rotating the disk, said disk and first tumbler having means for indicating their position with respect to the casing.

3. A look of the character specified, comprising a casing having a circular opening and an escutcheon encircling the opening, a disk in the opening, an annular or ring shaped tumbler encircling the disk within the opening, a disk shaped tumbler within the first tumbler, means for limiting the angular movement of the tumblers with re spect to each other, said second tumbler having an annular series of openings and an opening outside of the series, pins extending inwardly from the disk for engaging an opening of the series and the single opening, one of the pins being of greater length than the other pin, the first tumbler having means for engagement by the last named pin when the disk is in a predetermined position with respect to the casing,

the disk being movable laterally toward the bolt, a spring pressing the disk away from the bolt, the disk, first tumbler and escutcheon having means for indicating their relative position.

at. A lock of the character specified, comprising a casing having a circular opening in one side, a disk rotatable in the opening, an annular or ring shaped tumbler encirclin the disk and mounted for rotation, a

bolt in the casing on the inner side of the disk, a disk shaped tumbler mounted to ro tate in the casing between the bolt and the disk, said disk being movable laterally toward the bolt, and having means for engaging the second tumbler, the first tumbler and the bolt, when the disk and tumblers occupy a predetermined position with respect to the casing and to each other, a spring between the bolt and the disk and pressing them away from each other, means for limiting the angular movement of the tumblers with respect to each other, and means on the first tumbler the disk and the casing for indicating their relative position, said disk having a knob for turning the same.

5. A lock of the character specified, comprising a casing having a circular opening in one side, a disk rotatable in the opening, an annular or ring shaped tumbler encircling the disk, and mounted for rotation, a bolt in the casing 011 the inner side of the disk, a disk shaped tumbler mounted to rotate in the casing between the bolt and the disk, said disk being movable laterally toward the bolt, and having means for engaging the second tumbler, the first tumbler and the bolt, when the disk and the tumblers occupy a predetermined position with respect to the casing and to each other, a spring between 1 the bolt and the disk and pressing them away from each other, and means on the first tumbler the disk and the casing for indicating their relative position, said disk having a knob for turning the same.

6. A lock of the character specified, comprising a casing having a circular opening in one side, a disk rotatable in the opening, an annular or ring shaped tumbler encircling the disk, and mounted for rotation, a bolt in the casing on the inner side of the disk, a disk shaped tumbler mounted to rotate in the casing between the bolt and the disk, said disk being movable laterally toward the bolt, and having means for engaging the second tumbler, the first tumbler and the bolt, when the disk and tumblers occupy a predetermined position with respect to the casing and to each other, and means on the first tumbler the disk and the casing for indicating their relative position, said disk having a knob for turning the same.

7. A look of the character specified, comprising a casing having a circular opening in one side, a disk rotatable in the opening,

an annular or ring shaped tumbler encircling the disk, and mounted for rotation, a bolt in the casing on the inner side of the disk, a disk shaped tumbler mounted to r0- tate in the casing between the bolt and the disk, said disk being movable laterally to- Ward the bolt, and having means for engaging the second tumbler, the first tumbler and the bolt, When the disk and tumblers occupy a predetermined position with respect to the casing and to each other, a spring between the bolt and the disk and pressing them away from each other, and means on the first tumbler, the disk and the casing for inclicating their relative position.

8. A lock of the character specified, comprising a casing having a circular opening in one side, a disk rotatable in the opening, an annular or ring shaped tumbler encircling the disk, and mounted ifor rotation, a bolt in the casing on the inner side of the disk, a disk shaped tumbler mounted to rotate in the casing between the bolt and the disk, said disk being movable laterally toward the bolt, and having means for engaging the second tumbler, the first tumbler and the bolt, when the disk and tumblers occupy a predetermined )osition with respect to the casing and to eac other, and means on the first tumbler the disk and the casing for indicating their relative position.

HANSFORD C. STEVENS. Witnesses:

J. LEE STONER, L. H. Doomr'rnn.

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

Washington, D. G.

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