US1340398A - Door-lock - Google Patents

Description

E. H. omEN.A

DOOR LOCK.

APPMCATION FILED DEC.9| 1912.

Patented May 18, 1920.

2 SHEETS-SHEET l.

liz

E. H. OBRIEN.

DOOR LOCK.

APPLICATION FILED DEc.9,1912.

Patented May 18, 1920.

2 SHEETS-SHEET 2.

a@ a; 2f

mm .0 E

EDMUND HALE OBRIEN, OIE KANSAS CITY, MISSOURI.V

:Doon-Loox.

Specification of Letters Patent.

Patented May 1s, 1920.

Application led- December 9, 1912. Serial No. 735,677. f

i To all whom t may concern:

Be it known that I, EDMUND HALE OBRIEN, atcitizen of the United States, re-

siding at Kansas City, in thev county of Jackson and State of Missouri, have invented certain new and useful Improvements in Door-Locks, of which the following is a specification. g

This invention relates to locks for motor car doors and the like. Heretofore in all locks, as far as I am aware, the latch bolts have been retracted or thrown to inoperative position by striking against the socket plates secured to the door jambs and through such contact the paint or-enamel finish of the socket plates, or of the jambs or other parts adjacent thereto, is soon scratched or dislodged.

The object of this invention is to produce a lock in which the bolt after being thrown to inoperative position to permit the door being opened, remains in such position until the door is fully closed and is then thrown to operative position and therefore cannot be instrumental in scratching or otherwise defacing any part of the socket plate or jamb.

. A further object is to produce a doorlock in which the shock or jar incident to the arrest of the door as it is closed is cushioned and partially or wholly removed from the socket plate which receives the bolt, or the jamb which carries said plate.

With theseobjects in view the invention consists 'in certain novel and peculiar features of constructionv and organization as hereinafter described andclaimed; and in order that it may be fully understood reference is to be had to the accompanying drawings, in whichf Figure 1, is a fragmentary side elevation i of a motor car in which the door is l,broken away to disclose a lock embodying my in vention. .y

Fig. 2, is a horizontal section of the car,

to show the lock in plan'view.

- Fig. 3, is a view of the lock with the face A plate removed, and with the bolt advanced,

as when the door is closed.

Fig. 4, is a similar view with the bolt retracted and the door still closed.

Fig. 5, is a vertical section taken on the line V-V of Fig. 4. Y

Fig. 6, is a detail view of a lever forming part of the lock. l

Fig'. 7 is a detail trigger of the lock.

Fig. 8, is a detail perspective view of a part of a bar for imparting endwise movement to the trigger.

Fig. 9, is a detail perspective View of a spring for holding the trigger yieldingly elevated.

Fig. 10, is a detail perspective View of a slide plate forming a part of the lock.

In the saidydrawings, 1 is a lock casing and 2 the removable face plate thereof. 3 is the bolt, thefhead of the same fitting in an opening in the frontA wall of the casing, and provided in its upper edge with a notch 5.

The shank o-f the bolt is provided with a longitudinal slot 6, engaging a guide pin 7 rigid with the casing and projecting laterally and downwardly respectively, from the shank are pins 8 and 9,V the latter being connected by a retractile springl() with a pin 11 rigid with the casing, the function of the spring being to advance the bolt at the proper time.

To lock the bolt in its retracted position, as shown in Fig. 4, a dog or tumbler 12 is mounted pivotally within the casing, and is provided with a depending tooth 13 for engagement with the notch 5, the dog or tumbler being held pressed yieldingly toward the bolt by a spring 14, which is coiled around the pivot pin'15 of the dog, and bears at its ends upon the latter and against the front end wall of the casing. For the purpose of retracting the bolt, a lever 16 `is suspended within the casing from pivot 17, and at its lower end bears against the forward. side of pin 8 of the bolt, and is connected by a retractile spring 18 to the rear end of the wall of the casing; said spring being of sufficient strength to overcome the resistance of spring 10 and withdraw the bolt 3, when the latter is not held advanced or projected by a preponderating power.

The lever is cut awayv at 19, to provide a perspectivel'view of the .shoulder 20, and projecting through the cut rear end with a vertical slot 25, receiving a pin 26, projecting laterally from the head of a slide bar 27, extending into the casing through the rear end wall thereof, and to Secured to the lower edge of the head of the slide bar is a spring 29, the'sprin'g end 30 o the same underlying the trigger 21 and constantly tending to elevate the front end thereof.

Pivoted within the casing on pivot 31 is a bell crank lever 32 and interposed between said lever and the Jfaceplate of the casing is a slide plate 33, having a stem 34, projecting slidinglyV through the top of the casing. This plate is also provided with a vertical slot 35 receiving pivot 31 and a shoulder 36 which rests upon the upper arm of the said bell crank lever, so that when the slide plate is pressed downward, it shall cause the bell crank lever to exert downward pressure on the trigger 21.

Then the bolt occupies its advanced or operative position and is engaged with the socket piece 46, as shown in Fig. 3, the trigger is raised and prevents backward swinging lmovement of lever 16 and the consequent withdrawal of the bolt, and while the trigger is thus advanced its front or free end is held elevated through pressure of its shoulder 22 on shoulder 20 of the lever 16, and the upward pressure of spring' 29. A

The slide bar 27 is secured in a socket 37 fastened on the Afront end of a rod 38, which extends for the full width of the car door 39, and when the latter'is closed or nearly closed, engages a wear plate 40 secured to the hinge jamb 41, through the pressure of.

i a spring 42 interposed between the socket 37 and the casing 1, and .in this connection it will be noted that for all practical purposes rods 27 and 38 are one, but that for con? venience in'assembling, they are preferably made in sections, as shown in `Fig. 3.

For imparting downward movement to the slide plate 33, a push rod 43- extending up through the door, is provided at its lower "z end with a socket 44 receiving the upper end of the stem of the slide plate, and at its upper end is provid/ed witha head or button 45 projecting slightly beyond the upper edge then swing lever 16 rearwardly and as said of the door for convenient operation by a person seated in the car.

Assuming that the bolt is advanced and that pressure is applied on the push rod, the following actions occur ;-'Ilhe plate 33 slides downward and its shoulder 36 rocks the bell crank and causes the latter to swing vthe trigger downward until tripped from engagement with lever 16. Spring 18 will spring is of greater power than spring 10,

it withdraws they bolt by rearward pressure on pin 8, and in withdrawing the bolt, stretches or tensions spring 10.

As the lever 16 swings rearwardly and effects the withdrawal of the bolt, dog 12 swings downward until its tooth is in the path of -rearward movement of the bolt head so that in the rearward movement of the latter, the dog is? pushed upward, and when its tooth registers with notch 5, and it drops down and locks the bolt in its withdrawn or retracted position, as shown in Fig. 4, it being noted that this withdrawal of the bolt occurs without any change of position on the part of the bar 27, which it willbe noted is held advanced against the resistance of spring 42 becausev the rear end of bar 38 bears against the wear plate 40.

As the door is opened the )spring 42 imparts rearward movement to bars 27 and 38, and hence to the trigger 21, and as thelatter is withdrawn aV suiicient distance for its shoulder 22 to clear shoulder 20 of the lever, the spring 29 raises the front end of the trigger and holds it elevated.

IIpon the reclosing of the door, the rear end of rod 38 engages and is pushed for` ward by the wear plate 40, this adjustment of said rod beginning just before and ending as the door is fully closed, and in such movement spring 42 is compressed and the trigger is advanced so that through its pressure on lever 16, the same shall be swung forward and trip the dog from engagement with the bolt.

The tripping of the dog from engagement with the bolt permits the spring 10 to force the bolt into interlocked engagement with the socket plate 46, it being understood that t-he parts are so proportioned that the tooth of the dog is not wholly withdrawn from the notch 5, until the door is Jfully closed and the bolt is in perfect aline-ment with the socket plate.

From the above description it will be apparent that I have produced a door lock em- 1. In a lock, the combination of a casing,

a bolt therein, means holding the bolt in inoperative position, means to trip the boltholding means, means to throw the bolt to operative position as the holding means is tripped, and a single means to return the tripping means to original position and the bolt to inoperative position.

2. In a door lock, the combination of a casing, a bolt therein, a pivoted dog holding the bolt in inoperative position, means to trip said dog, means tothrow the bolt to operative position when the dog is tripped,

, holding means to trip the same, and a spring A to advance or throw the bolt to operative inoperative position, a lever in the casing position when said holding-means is tripped.

Ll. In a lock, the combination of a casing, a bolt therein, means holding the bolt in inoperative position, a lever in the casing to trip the bolt-holding means, in its advance movement and throw the bolt to inoperative position in its reverse movement, a trigger in the casing to effect the advance movement of the lever and the consequent tripping of thebolt holding means, and a spring to advance the bolt when it is released.

5. In a lock, the combination of a casing, a bolt therein, means holding the bolt in inoperative position, a lever in the casing to trip the bolt holding means, in' its advance movement, and throw Vthe -bolt toinoperative position in its reverse movement, a trigger in the casing to effect the advance movement of the lever and the consequent tripping of the bolt holding means, a spring to advance the bolt when it is released, manually-operable means for tripping the trigger from engagement with the lever, and .a spring to swing the lever back to its original position and-thereby effect the return of the bolt to its inoperative position'.

6. In a lock, the combination of a`casing, a bolt therein, means holding the bolt in to trip the bolt holding means in its advance movement, and throw the bolt to inoperative position in its reverse movement, a trigger in the casing to effect the advance movement of the lever and the consequent tripping'of the bolt holding means, a spring to advance the bolt when it is released, manually-operable means for tripping the trigger from engagement with the lever, a spring to swing the lever back to its original position and thereby effect the return of the bolt ,to its inoperative position, and means to restore the trigger to its initial position.

7. In a lock, the combination of a casing, a bolt therein, means for holding the bolt in inoperative position, a lever in the casing to trip the bolt holding means in its advance movement, and throw the bolt to inoperative position in its reverse movement, a trigger in the casing to effect the advance movement of the lever and the consequent tripping of the bolt holding means, a spring to advance the bolt when it is released, manually-operable means for tripping the trigger from engagement with the lever, a spring to swing the lever back to its original position and thereby effect the return-of the bolt to its inoperative position, means to withdraw the trigger from its advanced position, and yielding means to restore its free end tothe position it occupied prior to being tripped from engagement with said lever.

8. A lock comprising. a bolt, resilient means for shooting and drawing the bolt, and means normally projected against the j amb at the hinged edge of the door for controlling said resilient means in projecting the bolt. A

9. Thel combination with a door frame and a door hinged thereto, of means normally holding the door open, means forlocking the door to the frame, means for interconnecting and disconnecting sald two means, and means for automatically u nlocking the door from the frame when said two means are disconnected.

10. A door latch, comprising a door locking section, a door opening section, releasable means for interconnecting said sections automatically, and means for retracting the door locking section when said sections are disconnected from each other.

11. The combination With a door. frame and a door hinged thereto, of a laterally sliding sectional bolt member mounted on the door and extending across the same, said A normally retracted bolt, and a springpressed door-opening bar for causing protraction of the bolt automatically ,l on the closing of the door. f

In testimony whereot1 I aix my signature in the presence of two witnesses.

EDMUND 'HALE oBRIEN,

Witnesses.:

HELEN C. Ronenns, G. THoRrE.

lie

Images