US1085016A - Lock. - Google Patents

Description

J. B. CALVERT.

LOCK.

APPLICATION FILED JULY 31, 1913.

Patented Jan. 20, 1914.

- companying UNITE STT TATENT QFFIC JOHN B. CALVERT, F COALGATE, OKLAHOMA.

LOCK.

To all whom it may concern:

Be it known that I, J OHN B. CALVERT, a citizen of the United States, residing at Coalgate, in the county of Coal and State of Oklahoma, have invented certain new and useful Improvements in Locks, of which the following is a specification.

This invention relates to locks.

One object is to provide a simple, inexpensive, durable and efiicient rim or mortise lock.

Another object resides in the provision of a lock of the nature stated embodying a comparatively few number of parts which may be readily assembled without danger of derangement and which may be readily manipulated to effect opening, closing and looking of doors to which the lock may be applied.

A still further object resides in the provision of a lock embodying among other characteristics a bolt, a spindle bushing, a locking device movable into and out of the path of the bolt, with yieldable means adapted to exert pressure both upon the spindle bushing and the locking device, both the spindle bushing and the locking device being relieved of pressure thereagainst by saidpressure exerting means under the influence of the key which manipulates the lock.

With the above and other objects in view, the present invention consists in the combination and arrangement of parts hereinafter more fully described, illustrated in the acdrawings and particularly pointed out in the appended claims, it being understood that changes may be made in the form, proportion, size and minor details without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings :Figure 1 is a face view of the lock with the front of the casing removed showing the locking device engaging the bolt to prevent operation of the bolt without the use of the key of the lock. Fig. 2 is a similar view illustrating the position of the parts when the locking device is out of the path of movement of the bolt so that the bolt may be manipulated through operation of the knob spindle bushing without the use of the key. Fig. 3 is a transverse sectional view on the line m-w of Fig. 1. Fig. at is a detail perspective view of the locking device.

Referring now more particularly to the accompanying drawings, the reference char- Specification of Letters Patent.

Application filed July 31, 1913.

Patented Jan. 20, 1914:-

Serial No. 782,331.

acter indicates a suitable casing provided with oppositely disposed key slots 11 and with a bolt slot 12 through which latter is adapted to reciprocate the bolt 13. The bolt is provided with a slot 14 adapted to embrace the pin 15 whereby the bolt is guided through the slot 12 and at its inner end supported in true alinement with the slot 12. The ends of the slot 14 limit the inward and outward movement of the bolt if it be necessary to limit its movement.

The bolt 13 is reduced at its inner end forming a tail piece 16 and a shoulder 16. The tail piece 16 is provided with a recess 17 in which recess 17 engages the arm 18 carried by the spindle bushing 19 journaled in the casing. The spindle bushing is oscillated through the instrumentality of the common knob spindle 20 and incident to 0scillation of the spindle bushing the arm 18 is rocked, consequently causing reciprocation of the bolt 13. The spindle bushing 19 is provided with another arm 21 which is engaged by a helical or other spring 22. This spring exerts an upward pressure on the arm 21 so as to throw the arm 18 forwardly and consequently maintain the bolt 13 normally in outward position so that provision is made for normally fastening the door.

The spring 22 may be secured within the lock casing in any suitable manner, but as shown, it is supported at its lower end by a lateral projection 23 extending from a trigger 24 pivotally mounted within the casing by means of a suitable pivot 25. The spring 22 thus exerts pressure on the bushing spindle 19, by virtue of its connection with the arm 21 thereof, and it also exerts pressure on the trigger 24:.

To look the bolt 13 in its outer position and thereby prevent inward movement of the bolt except through the instrumentality of the key of the look, I provide a locking device consisting of a body portion 26 and arms 27 and 28. These arms 27, 28 are disposed upon opposite sides of the key slots 11. As shown in Fig. 1 the arm 28 is adapted to engage the shoulder 16 of the bolt 13 and thereby hold the bolt against inward movement. To maintain this locking position of the locking device the lip 32 of the trigger 34 is adapted to engage in the notch of the locking device. The spring tension of the spring 22 is sufficient to hold the locking device against downward gravitat ing movement on its pivot 29. The arm 28 is larger and heavier than the arm 27 to cause normal downward gravitation of the arm 28 away from the shoulder 16 of the bolt 13, and by virtue of the spring 22 being connected with the trigger 24: the lip 32 of the trigger prevents this normal tendency of the locking device to gravitate downwardly. The trigger 24 has a wing 33 which overlaps the arm 27 of the locking device to guide the latter in its swinging movement. The arm 28 of the locking device is provided with a groove 34.

The key of the lock is indicated at 35. Its shank has a lug 36 from which projects a finger 37.

Assuming the bolt to be locked in its outward position and it is desired to unfasten the door the key 35 is inserted in the key slots 11. By throwing the lug 36 of the key to the right in Fig. 1 the finger 37 projecting from the lug rides through the groove 34 of the arm 28 and by continued rotation of the key, the finger 37 engages the inner face of the arm 27 while the lug 36 engages the wing 33. The engagement of the lug 36 with the wing 33 moves the trigger 24 backwardly to release the lip 32 of the trigger from the notch 30 of the locking device, whereupon the locking device gravitates downwardly to move the arm 28 out of the path of the shoulder 16 ofthe bolt 13. Just as soon as the lug 36 and the finger 37 leave the wing 33 and the arm 27, respectively, the lip 32 engages the notch 31 of the locking device, whereupon the locking device is held in the position illustrated in Fig. 2 and when the locking device is in this position, it is clear that by manipulation of the knob spindle 19 the bolt 13 may be reciprocated backwardly and forwardly according to the direction of oscillation of the spindle bushing.

By virtue of my particular construction I am enabled to eliminate numerous springs and to simplify the look as compared with many of the complicated locks now in use. It is apparent, also, that the lock is not easily picked and that it is operable through the instrumentality' of a particularly designed key.

The numeral 38 indicates a latch which may be used, if desired. If employed, the bolt 13 may be provided with notches 39 and 40 and the latch 38 provided with a dog 41 adapted to engage interchangeably in the notches 39 and 40 according to whether the lock be used on a right or left hand door. The latch may be provided with a handle 12 to facilitate its manipulation.

What is claimed is 1. In a lock of the character described, a casing provided with key slots and a bolt slot, a bolt slidably mounted in the casing through the bolt slot and provided with a recess, a spindle bushing provided with an arm lying in the recess of the bolt, means exerting pressure on the spindle bushing to rock the arm and thereby force the boltnormally outwardly, a trigger to which said pressure exerting means is connected, a looking device pivotally mounted in the casing and engaged by said trigger and operable for movement into and out of the path of movement of the bolt through the instrumentality of the key of the lock against the action of said pressure exerting means and the trigger.

2. In a lock of the character described, a casing, a bolt slidably mounted in the casing and provided with a recess, a spindle bushing journaled in the casing and provided with an arm lying in the recess of the bolt, a locking device pivotally mounted in the casing and including a body and spaced arms, a spring having connection with the spindle bushing, a trigger having connection with the spring and with said locking device whereby the locking device may be held in the path of movement of the bolt, and means engageable with the locking device and the trigger to effect movement of the lockin device out of the path of movement of theiiolt.

3. In a lock of the character described, a casing provided with key slots and a bolt slot, a bolt slidably mounted in the casing through the bolt slot and provided with a recess, a spindle bushing provided with an arm lying in the recess of the bolt, means exerting pressure on the spindle bushing to rock the arm and thereby force the bolt normally outwardly, a trigger to which said pressure exerting means is connected, a look ing device pivotally mounted in the casing and engaged by said trigger and operable for movement into and out of the path of movement of the bolt through the instrumentality of the key of the lock against the action of said pressure exerting means and the trigger, and a latch engageable with the bolt to lock the bolt in its outward position independently of the aforesaid locking de Vice.

4. In a lock of the character described, a casing provided with key slots and a bolt slot, a bolt slidably mounted in the casing through the bolt slot and provided with a recess, a spindle bushing provided with an arm lying in the recess of the bolt, means exerting pressure on the spindle bushing to rock the arm and thereby force the bolt nor mally outwardly, a trigger to which said pressure exerting means is connected, a locking device pivotally mounted in the casing and engaged by said trigger and operable for movement into and out of the path of movement of the bolt through the instrumentality of the key of the lock against the action of said pressure exerting means and the trigger, and a latch engageable with the bolt to lock the bolt in its outward position independently of the aforesaid locking device, and to cooperate with said locking device to reinforce the latter in holding the bolt in outward position.

5. In a lock of the character described, a casing, a bolt slidably mounted in the casing and provided with a recess, a spindle bushing journaled in the casing and provided with an arm lying in the recess of the bolt, a locking device pivotally mounted in the casing and including a body and spaced arms, a spring having connection with the spindle bushing, a trigger having connection with the spring and with said locking device whereby the locking device may be held in the path of movement of the bolt, and means engageable with the locking device and the trigger to effect movement of the locking device out of the path of movement of the bolt, and a latch engageable with the bolt.

6. In a lock of the character described, a casing, a bolt slidably mounted in the casing and provided with a recess, a spindle bushing journaled in the casing and provided with an arm lying in the recess of the bolt, a gravitating locking device movable into and out of the path of movement of the bolt, aspring having connection with the spindle bushing to exert pressure on the latter and thereby hold the bolt in outward position, said locking device having spaced notches, a trigger in the casing and having connection with the aforesaid spring and provided with a lip adapted to engage in one of the notches of the locking device to hold the latter against gravitating movement out of the path of movement of the bolt, and means engageable with the locking device and the trigger to release the lip of the latter from said notch and permit the locking device to gravitate out of the path of movement of the bolt, the lip of the trigger engaging the other of said notches to limit the downward gravitating movement of the locking device.

7. In a. lock of the character described, a casing, a bolt slidably mounted in the casing and provided with a recess, a spindle bushing journaled in the casing and provided with an arm lying in the recess of the bolt. a locking device pivotally mounted in the easing and including a body and spaced arms, a spring having connection with the spindle bushing. a trigger having connection with the spring and with said locking device whereby the locking device may be held in the path of movement of the bolt, means engageable with the locking device and the trigger to effect movement of the locking device out of the path of movement of the bolt, the bolt having notches, and a latch movable into the notches interchangeably to hold the bolt in position.

8. In a lock of the character described, a casing provided with a bolt slot, a bolt slidably mounted in the casing through the bolt slot, a spindle bushing having operative connection with the bolt to reciprocate the lat ter upon oscillation of the spindle bushing, a locking device mounted in the casing for movement into and out of the path of movement of the bolt, a trigger engageable with the locking device, a spring connection between the trigger and the spindle bushing, and a key engageable with the locking device and the trigger to operate them to efi'ect movement of the locking device into and out of the path of movement of the bolt.

9. In a lock of the character described, a casing provided with a bolt slot, a bolt slidably mounted in the casing through the bolt slot, a spindle bushing having operative connection with the bolt to reciprocate the latter upon oscillation of the spindle bushing, a spring having connection with the spindle bushing to oscillate the same in one direction to retain the bolt normally in outward position, a gravitating locking; device movable into and out of the path of movement of the bolt, a trigger to hold the locking device against gravitating movement out of the path of movement of the bolt, and means en gagealole with the locking device and the trigger to release the latter and permit it to gravitate out of the path of movement of the bolt.

10. In a lock of the character described, a casing provided with a bolt slot, a bolt slidably mounted in the casing through the bolt slot, a spindle bushing having operative con nection with the bolt to reciprocate the latter upon oscillation of the spindle bushing, a spring having connection with the spindle bushing to oscillate the same in one direc tion to retain the bolt normally in outward position, a gravitating locking device movable into and out of the path of movement of the bolt, a trigger to hold the locking device against gravitating movement out of the path of movement of the bolt, and means engageable with the locking device and the trigger to release the latter and permit it to gravitate out of the path of movement of the bolt, and a latch operable for engagement with the bolt to fasten the latter against movement.

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

JOHN B. CALVERT.

Witnesses:

R. P. CARSON, N. J. MEYER.

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

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