US2467622A - Door lock - Google Patents

Description

April 1 1949. R. KULCHESKI 2,467,622

DOOR LOCK Filed May 2, 1945 2 Sheets-Sheet. 1

RALPHE KULCHESKI April 19, 1949.

R. KULCHESKI DOOR'LOCK 2 Shets-Sheet 2 Filed May 2, 1945 T m m I RALPHE KULCHESKI m. WWW

Patented Apr. 19, 1949 UNITED STATES PATENT OFFICE noon LOCK Ralphe Kulcheski, Fort Frances, Ontario, Canada Application May 2, 1945'; serialNb. 591,429" 1 Claim. 01. 292- 170 cluding a slidable key-actuated locking bolt and a slidable push button actuated latch bolt, and the invention has for itspriiiiary object to'provide a latch bolte'm'bodying' push buttonrneans for retracting the same from either sideof the door and also"embcdyingmeans for lockingboth of said-push buttons'again'st'latch bolt operating movement. H I x A further object'is-toprovide a door lock of this character of simple and practical construction, which is efficient and reliable in operation, relatively inexpensive to manufacture, and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like reference numerals refer to like parts throughout, and in which:

Figure 1 is a fragmentary edge elevational view of a door showing the lock mounted in position therein,

Figure 2 is a side elevational View of the lock,

Figure 3 is a side elevational view of the lock encased in the casing with the cover plate removed therefrom,

Figure 4 is a fragmentary transverse sectional view through the lock casing and illustrating one of th push buttons for actuating the latch bolt,

Figure 5 is a fragmentary sectional view of the push button locking means,

Figure 6 is a plan view of the guide plate for one of the push buttons,

Figure 7 is a side elevational view of the rockable locking member for the push buttons,

Figure 8 is an edge elevational view thereof with part of the lock casing shown in section,

Figure 9 isa plan view of one of the push buttons,

Figure 10 is a transverse sectional view taken substantially on a line ill-It of Figure 9,

Figure 11 is a side elevational view of the spring for the push button locking member, and

Figure 12 is a perspective view of the locking plates for th door bolt.

Referring now to the drawings in detail, where-- in, for the purpose of illustration, I have disclosed a preferred embodiment of the invention, the numeral 5 designates the lock case mortised in the edge of a door 6.

slidably mounted in the case is a door bolt l having a notch 8 in its lower edge adapted for receivin a key inserted in'the'key-hole opening 12 on its upper edge and the plate It is forr ried.

with a laterally projecting stop I3 on its upper edge adapted for engaging the opposite edges of the lug i2 when the bolt 7 is moved into its projected and retracted positions.

A leaf spring M is secured at one end in the top of the case 5 and has its free end resting on top of the stop it to yieldably urge the plate In in its lowermost position.

Accordingly, when a key is inserted in the lock and is received in the notch 8 of the bolt 1, the plate ID will be raised upwardly to release the stop l3 from the lug I2 and the bolt 1 may then be moved into either its retracted or projected positions by the key, and upon removal of the key the plate Ill will then be forced downwardly by the spring M with the stop l3 positioned at one edge of the lug I2 to retain the bolt in either of its aforesaid positions.

A latch bolt I5 is slidably mounted in the lower portion of the case 5, the front end of the latch bolt being slidably supported on the guide I1, the latch bolt being limited in its projected position by a lug l8 positioned behind the guide.

The inner end of the latch bolt is slidably mounted in spaced parallel guides I9, between which a coil spring 20 is positioned and engaging the inner end of the latch bolt to project the same forwardly.

A pin 2! rises from the upper edge of the latch bolt [5 and On which a roller 22 is journaled, the roller having a groove 23 extending circumferentially thereof.

Openings 24 are formed in the opposite sides of the case 5 adjacent the roller 22 and through which the inner ends of extensible push buttons 25 are movable, the inner ends of the push buttons being formed with arcuate or cam shaped ends 26 curved to seat in the groove 23 of the roller 22, the push buttons being adapted to engage opposite sides of the roller.

The cam shaped ends 25 of the push buttons 25 are slidably mounted in slots 21 of guide plates 28 secured to the outside of the case 5.

The outer ends of the push buttons are formed with heads 29 projecting outwardly through dome-shaped cover plates 30, within which coil springs 3| are positioned for engaging pins 32 carried by the push buttons to project the push buttons outwardly in the position as shown in Figure 4 of the drawings.

Accordingly, upon an inwardly actuated movement of the push buttons, the cam heads 26 will engage the roller 22 forwardly of the roller, whereby to retract the latch bolt 15.

The push buttons 25 may be locked against inward depressing movement by means of a looking bar 33 pivoted intermediate its ends on a pin 34 carried by the case and having one end 35 thereof adapted to be interposed between said cam-shaped ends 26 in the path of the inward movement of the push buttons 25, whereby to function as a stop for the push buttons to prevent engagement thereof With the roller 22.

A socket 36 is formed on one side of the bar 33 adapted for receiving a square shaped shank 31 on a wing head 38 journaled in the case to pivotally actuate the bar 33 for moving the end 35 from the position shown in full lines in Figure 3 to its dotted line position out of the path of the push buttons 25 to permit engagement of the push buttons with the roller 22. The bar 33 is held in either of its aforesaid positions by means of a coil spring 39 mounted on the pin 34 and frictionally holding the bar against idle movement.

It is believed that the details of construction and manner of use of the device will be readily understood from the foregoing without further detailed explanation.

What I claim is:

A door lock comprising a lock case adapted for mounting on a door, a spring-projected latch bolt slidably mounted in the case, a roller journaled on one side of the bolt, and a pair of push buttons carried by the door upon opposite sides of said latch bolt and including laterally curved heads adapted for engaging said roller to retract the bolt, and a pivoted stop swingable to interpose the same between said push buttons to obstruct movement thereof.

RALPHE KULCHESKI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 655,543 Bohlen Aug. '7, 1900 1,451,464 Leczycki Apr. 10, 1923 1,576,007 Springer Mar. 9, 926 1,956,098 Jacobson Apr. 24, 1934 2,058,163 Malone Oct. 20, 1936 2,186,666 Cereda. Jan. 9, 1940 2,317,699 Thompson Apr. 27, 1943

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