US1026001A - Lock. - Google Patents

Description

S. H. SHANK.

LOOK.

APPLICATION FILED JULY 31, 1911.

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s; H, SHAN'K. LOCK.

I APPLICATION FILED JULY 31, 1911. 1,026,001 I Patented May 14, 1912.

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s. H. SHANK.

LOOK.

APPLICATION FILED JULY 31, 1911. I I 1,02 ,001 Patented May 14, 1912.

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SIMON H. SHANK, OF CHICAGO, ILLINOIS.

LOCK.

Specification of Letters Patent.

Application filed July 31, 1911.

Patented May 14, 1912.

Serial No. 641,512.

b all whom it may concern Be it known that I, SIMON H. SI-IANK, a citizen of the United States, residing at Chicage, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Locks, of which the following is a specification.

My invention relates to locks and embodies certain improvements over the form of lock shown in my previous patent Number 899,266, issued September 22, 1908.

The objects of my present invention are: first, to provide simple and eflicient means for adjusting the wards to keys of different configurations; second, to provide advantageous means for actuating the tumblers; third, to provide a construction such that the lock may be readily changed from a spring lock to a dead lock and vice versa; fourth, to provide a-construction by which the user may be afforded considerable choice in the manner of operation of the lock; fifth, to provide in a lock of this construction means whereby the bevel of the bolt may be reversed so that the lock may fit a right hand door or a left hand door as desired, and, sixth, to provide details of construction hereinafter specifically pointed out.

I accomplish my objects by the mechanism illustrated in the accompanying drawings, in which:

Figures 1 to 4 are assembly views showing the operating parts of the lock in vari ous positions. Figs. 5 and 6 show keys of various forms. Fig. 7 shows a blank key. Figs. 8 and 9 show means for assisting in the adjusting of the lock to keys of various configurations, and Figs. 10 to 20 inclusive are perspective views of various parts of the lock.

Similar numerals refer to similar parts throughout the several views.

The casing, as usual in looks of the type illustrated, comprises a main plate 1, rim plate 2, back wall 3, top wall 4, and bottom wall 5, in addition to a cover plate (not shown). Projecting through the rim plate 2 is a beveled bolt 6, the stem 7 whereof is surrounded by a coiled spring 8 tending to project the bolt in the usual manner. Inside of the rim plate bolt 6 are two projecting wings 10. The sliding frame 12 shown separately in Fig. 19 is provided with a finger 13 adapted to engage one of the wings 10 to retract the bolt against the force of its spring 8. Said frame is actuated by a barrel 15 shown separately in Fig. 11. Said barrel is apertured to receive the shank of the door knob (not shown) to be rotated thereby. Said barrel has two projecting cars 16 adapted to engage the fingers 17 of said frame to retract the latter. Frame 12 is provided with a lug 20 adapted to engage the shoulder 21 of the dog 22 shown separately in Fig. 14. Said dog is pivoted to the lock casing at the point 23. A spring 24 constantly urges said dog to descend into position to engage lug 20.

Dog 22 has a nose adapted to be engaged by the trip arm 27 pivoted to the easing upon the arbor 38. Said trip arm, shown separately in Fig. 12, is adapted to hold dog 22 in raised position, where it will clear the lug 20 upon the frame 12 and permit said frame to slide within the easing. The opposite end of said trip arm contacts one of the wings 10 of the bolt 6 and is held in contact by a spring 30. The parts are so arranged that when the dog is resting upon said trip arm, if the bolt 6 is retracted it will act upon arm 27 and cause it to release said dog and permit the latter to drop down behind lug 20 and prevent a second retraction of the bolt until the key is used to return the dog to non acting position.

Dog 22 has a shoulder 33 located in position to be engaged by the lug 34 upon the lifting arm 35 which is shown separately in Fig. 15. Said lifting arm is pivoted upon the stationary arbor 36 and carries a pin 37 which penetrates the tumblers 38 and actuator 39. Said tumblers, two of which are shown in perspective in Figs. 16 and 17 have notches 40 for receiving the ends of springs 41, by which said wards are urged toward the key when the latter is in position. Said tumblers have fingers 42 adapted to enter the notches 43 in the wards 44. In the arrangement of parts shown in the accompanying drawing said wards are arranged to slide horizontally at the upper part of the lock. They have longitudinal slots 46 through which passes the shank of a screw 47. A nut 48 overlies said Wards and the screw head (not shown) bears against the outside of the plate 1 of the casing. By tightening up this screw the wards may be secured in the necessary relative positions to fit the particular key which is to be used.

The actuator 39 above mentioned is urged by a spring 50 toward the rotatable key cylinder 52 which is provided with a hole 7 53 for receiving the web of the key and a wing 54 which is adapted to engage the edge of the actuator to operate it. In the form of lock illustrated, the actuator has an extension 55" which is also engaged by said wing when the cylinder is rotated. In my lock the cylinder does not extend through the entire thickness of the lock but rests upon the upper tumbler 38 and may, therefore, be referred to as stub cylinder. It is interposed between the cover plate (not shown) and the uppermost tumbler and is held laterally at one side by the wall 3 of the casing and at the other side by the actuator. A pin 55 rising from the uppermost tumbler lies in position to be engaged by the wing 54 of the cylinder 52, when the latter is being reversely rotated to normal position shown in Fig. 1. In consequence if the springs 41 should not be strong enough to withdraw the tumblers from engagement with the wards, said cylinder wing will engage said pin and mechanically force the tumblers back to normal position.

The type of key employed with my lock is illustrated in Figs. 5, 6 and 7. Figs. 5 and 6 illustrate webs having different steps out therein. Fig. 7 represents a blank key.

My lock shows to best advantage when operating as a dead lock, and to this end I have provided means whereby the operator after shutting the door may be assured that the bolt cannot be forced by a jimmy or other tool. To this end I have provided a stop arm shown in perspective in Fig. 18 and shown in position in dotted lines in Fig. 4. Said stop arm is articulately connected to the sliding frame 12 by the pin 61 and has a shoulder 62 adapted to lie behind and engage one of the wings 10 of the bolt, as illus trated in Fig. 4. This prevents the bolt from being forced back when the frame is locked by the dog 22, as shown in Figs. 3 and 4. hen it is desired to use my lock as a spring lock said stop arm may be removed by merely lifting it out.

A barrel 65 is rotatably mounted in the plate 1 of the casing beneath the bow 66 of the dog 22 and is apertured to receive the shank of a small controller knob (not shown) on the inside of the door when the lock is in place. This barrel has a laterally extend ing lug 67 adapted to engage said bow and lift the dog when said barrel is rotated. The extent of rotation of said barrel is lim ited by two stop pins 68.

In operation, let it be assumed that the parts are in the position shown in Fig. 4 with the key cylinder 52 in normal position and the bolt in projected position and held there by the stop arm 60 and dog 22. Let it be assumed that the operator wishes to leave the house and to be assured that the bolt cannot be forced back by a tool in the hands of an unauthorized person. He will first raise the dog 22 into engagement with the trip arm 27, as shown in dotted lines in Fig. 2. This is accomplished by inserting the key into the lock and rotating the key and the cylinder 52 far enough to cause the wing 74 of the cylinder to engage the actuator and cause it to elevate the lifting arm 35 and cause it in turn to lift the dog 22 to the position shown in full lines in Fig. 2. The op erator then rotates the key to a position to permit the parts to descend so that the nose 26 of the dog may engage the upper end of the tripping arm 27. The dog will then be held elevated and clear the lug 20 of the frame 12 and thus permit the bolt to move inward during the act of closing the door and to spring forward to locked position as soon as the door is closed. The operator will see to it that the controller barrel (35 is in non acting position, shown in Figs. 1 to 4. As the operator passes out and closes the door behind him the bolt in yielding inwardly will cause the upper wing 10 to act upon the trip arm 27 and release the dog 22, as shown in Fig. 1. When the bolt again springs forward, however, after the opera tor has passed out and closed the door hehind him the lug 20 will pass forward behind the shoulder 21 of the dog and thus permit the shoulder of the dog to drop in behind it and prevent the bolt from being again forced back until operated by the key. hen the operator returns he has merely to insert and rotate the key and thus reset the dog 22 to non-acting position, whereupon by rotating the door knoband with it the barrel 15 and wings 1(il1e may retract the bolt and open the door. If the operator wishes the lock to be controlled by the door knob alone he leaves the barrel 65 in acting position with the lug vertical and. thus prevents the dog 22 from descending far enough to engage the lug 20 upon the frame. If the operator desires to have the lock operate as an ordinary spring latch he removes the stop arm 60 from the lock, the result being that the bolt may be forced back at any time by exerting pressure upon the beveled edge thereof, or may be retracted by the door knob and cylinder 15 if the dog 22 is in nonacting position. If the dog is permitted to act normally the door knob will not be effective until after the key has raised the dog clear of the lug 20.

I will now describe the means for adjusting the lock to keys of different configurations:An L shaped setting member 70, shown in Figs. 1 to 4, is horizontally slidably mounted in the lock in such position that the vertical leg thereof will engage the ends of all of the wards. The rim plate 2 is apertured at a point opposite to said vertical leg for receiving a push rod 71 shown separately in Fig. 8, and in position in dotted lines in Fig. 1. The parts are so formed that when the nut 48 is backed off and the rod 71 is pushed in as far as it will go the notches 43 in the wards will all register with the fingers 42 of the tumblers when the latter are in normal position. A cam ridge 75 is rigidly fastened upon the plate 1 in the position shown in Figs. 1 to 4. This ridge is curved in such direction that its inner upper end approaches the lower end of the lifting arm 35. The rim plate 2 is apertured to receive a second push rod 76, shown in dotted lines in position in Fig. 1. The parts are so arranged that when said rod 76 is pushed into the lock the inner end will form a wedge between the ridge 75 and the lower edge of arm 35 and cause the latter to rise and push the tumblers into engagement with the wards 44. Thus, when the operator wishes to adjust the lock to a new key he first loosens the nut 48, then uses the rod 71 and setting member 70 to push the wards 44 inward as far as they will go. He then inserts the rod 7 6 and causes it to force the fingers of the tumblers 38 into the notches 43 of the wards. He then rotates the key so that the web will lie horizontally, as shown in Fig. 3. This forces the tumblers, and with them the wards, as far to the right as the key is capable of moving them. With the parts in this position the operator then tightens the nut 48 thus setting the wards rigidly in place. Thereafter the wards will prevent the rise and operation of the tumblers except when the latter are operated by a key having the same configuration.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. In a lock the combination of a bolt, a spring for urging the same toward locked position, a tripper arm adapted to be acted upon by said bolt, a dog adapted to be held in non acting position by said arm, a slidlng frame adapted to be held in locked position by said dog, and a stop arm adapted to engage said frame and said bolt to hold the latter in locked position when said frame is in locked position, said stop arm being removable.

2. In a lock the combination of a bolt, a sliding frame adapted to retract said bolt, a stop arm interposed between said bolt and said frame for holding the bolt forward when the frame is forward, said arm being removable, hand operated means for sliding said frame, a dog for holding said frame 1 forward, and means for controlling said dog.

3. In a lock, the combination of aplurality of independently slidable wards provided with notches, means adapted to engage all of said wards for sliding them to initial position when they are to be adjusted to a new key, tumblers adapted to engage the notches in the respective wards, means for forcing the tumblers into engagement with the wards when the latter are in initial position, and a nut and screw operable from outside the lock for rigidly securing the wards in the look when said wards have been adjusted to proper position.

4. In a lock, the combination of a plurality of independently slidable wards provided with notches, means adapted to engage all of said wards for sliding them to initial position when they are to be adjusted to a new key, tumblers adapted to enter the notches in the respective wards, said tumblers being articulately connected together, a setting tool, a stationary cam ridge in the lock for forcing the tumblers toward the wards through the agency of said tool, a key adapted to move the different tumblers to different positions when said tumblers are in engagement with said Wards, and means for setting the wards when they have thus been moved by the key.

5. In a lock, the combination of a plurality of independently slidable wards provided with notches, a sliding L shaped member adapted to engage all of said wards for 1noving them to initial position when they are to be adjusted to a new key, tumblers adapted to engage the notches in the respective wards, a stationary cam ridge, a tool adapted to cooperate with said ridge for forcing the tumblers into engagement with the wards when the latter are in initial position, and means operable from the outside of the lock for fastening the wards after they have been adjusted.

6. In a lock, the combination with the wards and tumblers of an actuator adapted to move the tumblers toward the wards, a key adapted to shift the tumblers to a position to enter the wards, a rotatable stub cylinder adapted to overlie said tumblers and operate said actuator said cylinder being slotted to receive the web of the key and hold the latter in position to operate the tumblers, a hand operated bolt, a dog for locking said bolt, and means operated by said actuator for moving said dog to non acting position.

7. In a lock, the combination with the wards and tumblers of an actuator adapted to move the tumblers toward the wards, a key adapted to shift he. tumblers to a position to enter the wards, a rotatable stub cylinder adapted to overlie said tumblers and operate said actuator, said cylinder being slotted to receive the web of the key and hold the latter in position to operate the tumblers, a hand operated bolt, a dog for locking said bolt, a tripper arm for holding said dog in scribed my name in the presence of two Witnon acting position, said tripper arm being nesses. adapted to be operated by said bolt to release said dog, and means operated by said actua- 5 tor for moving said dog into engagement With said tripper arm.

In witness whereof, I have hereunto sub- SIMON H. SHANK.

Witnesses HOWARD M. Cox, MARGARET D. B01313.

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

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