US1677012A - Combined lock and latch - Google Patents

Description

J lily 10; 192 8. J. ARIG;

COIBINED LOCK AND LATCH Filed Nov. 1a, 1926 I 2 Sheets-Sheet 1 INV ET R 2 BY TORNE July To, 1928.

J. ARIGI COMBINED LOCK AND LATCH 2 Sheets-Sheet 2 Filed Nov. 18, 1926 INVENTOR,

ATTORNEYS f Patented July 10, 1928.

UNlTED STATES 1,677,012 PATENT OFFICE.

JULIUS ABIGI, OI IARIANSKE L AZNE, CZECI-IOSLOVAKIA, ASSIGNOR TO THE FIRM:

LEBO, TOVARNA CTADEL, PBAHA-VYSOfiANY, GZECHOSLOVAKIA.

comamnn LOCK am) LATCH.

Application filed November 18, 1926, Serial Nov 149,217, and in Czechoslovakia December 19, 1925.

This invention relates to a device by means of which it is possible to secure from the inside, the door fastening device of a combinedlock and latch of any kind, such for instance as latch-bolts and dead-bolts, individually or both together against unauthorized opening from the outside.

The chief part of the device accordlng to the present invention comprises a finger rotatable to an angle of 90 which in one extreme position releases the two door fastening devices, whilst in the other locks them. This fin er is operated from the inside by means 0. a handle which is preferably arranged concentrically with the outer handle and is freely rotatable relatively to the latter to the extent of 90. The finger is arranged so as to engage in its locking position either with a projection of the sliding latch-bolt to be locked, or With a lever pivoted to the latter. The said lever effects at the same time also the locking of the lock bolt when the device is intended for the simultaneous securing of a latch-bolt and of a dead-bolt.

In the accompanying drawing:

Figure 1 is an elevation of a combined lock and latch embodying the present invention.

Figure 2 is a sectional view substantially on the line X-X of Figure 1.

Figure 3 is a View similar to Figure 1 of a slightly modified form" of the invention.

Figure 4 is a horizontal section through the latch actuating spindle.

Figure 5 is a detail section on the line M-N of Figure 3.

Figure 6 is a detail of another slight modification. a

In the first construction (Figures 1 and 2) there are provided two concentrically ro tatable spindles 1, 2 on which are mounted handles, and one of which 1 projects in wards, and the other 2 outwards from the "door. The outer spindle 2 carries an arm 3 which engages with a recess in the sliding tail 4 of the latch-bolt A and is controlled by the action of a spring 5. The tail 4 is provided with a lug 4 projecting downward at Tightangles to its direction of movement. To the said lug is pivoted a double-armed lever 6 rotatable about a pin 7 and adjustable within the limits of the recess 6. At the bottom end of this lever 6 is provided a tooth 6 with which engages a leaf spring 8 pressing against the tumblers 9 of the deadbolt B.

On the inner end-face of the hub 3 of the outer spindle 2 is formed an axially projecting tooth 3" which projects into the path of the flange l projecting from the hub 1 of the inner spindle 1 and extending over 270, so that the inner spindle 1 can rotate only to the extent of 90 relatively to the outer spindle. The flange 1" is provided with a radial finger l,Which, in one extreme position, is contact with the tail at of the latchbolt A and in the other extreme position rests against the lug 4*.

When the finger 1 is in the position shown in full lines in Figure l, the latch-bolt A can be opened from the outside or from the inside, and so long as the latch is held in the opened position, the dead-bolt B can also be opened by a key inserted through the keyhole 10. In other words as long as the latch-bolt A is in the locked position, the tumblers 9 are locked by the leaf spring 8 and the tooth 6" of the lever 6. lVhen the latch-bolt tail 4 is moved to the right (Figure 1) the lower end of the lever 6 will swing to the left and release the spring 8 and therefore also the tumblers 9. 7

When the finger 1 is turned into the position shown in dotted lines in Figure 1, in which it rests against the lug 4:; both the latch-bolt A and the dead-bolt B will be quently to open the door by means of a skeleton key, to the inner face of the door is it can be turned only after the spring blade 11 has been pressed against the door to such anextent that it is completely situated in the plane of the circumferential groove in the spindle 1.

Theconstruction in Figures 3to 5 differs from that just described chiefly by the finger pin for the purpose of facilitating the as sembling of the parts, the said pin fitting into a corresponding hollow or recess in the other nut. The prismatic projectionld has a cylindrical extension 1d which fits into a corresponding axial recess of the inner handle 13 and is provided, close to its end, with a circumferential groove 15 with which engages a pin 16 detachably mounted in the handle 13, so that the pin 16 thus protects the two ha-ndleslffi, 14; from axial movement.

The lever 6 and the finger 1 are mounted in one and the same plane so that the finger 1 can engage directly with a recess 6 of the lever 6. The finger 1 has an axial project-ion 1 (Figure 5) which, on the finger being suitably turned, strikes against the arm 3. The nut 1 of which finger 1 is a part is provided on the circumference with two recesses 1 arranged at 90 relatively to each other, with one of which engages the leaf spring 17 which thus secures the nut 1', together with the finger 1 in one or the other extreme position (Figure 1). In all other details this construction agrees with that of Figures 1 and 2. The recess or slot 6" can be provided at the upper end of the lever 6, so that the pin 12, and not the pin 7, will be guided in it (Figure 3). The lever 6 can engage with its upper end with a recess 4" of the tail 4.- (Figure 6). The working is the same as in Figures 1 and 2.

, It is obvious that the two constructionsdescribed could'be used also for locking either the latch-bolt A or the dead-bolt B or their equivalents, individually.

What I claim and desire to secure by Letters Patent of the United States is 1. In a combined lock and latch, the'combination of a reciprocable latch-bolt, a dead bolt, means for retracting the latch-bolt, a lever connected with the latch-bolt and preventing movement of the dead bolt when theilatch bolt is in projected position, and

a manually adjustable stop adapted to prevent retraction of the latch-bolt.

2. In a combined lock and latch, the combination of a reeiprocable latch-bolt, a dead bolt, means for retracting the latclrbolt, in-

cluding a two part spindle one part of which is adapted to have a limited movement independent oi the other spindle member and the latclnbolt, means connected with the latch-bolt and preventing movement of the dead-bolt when the latch-bolt is in projected position, and a stop connectedtosaid independently movable spindle member and adaptedto be adjusted to and from a posi tion where it will prevent retraction of the latch-bolt.

In a combined lock and latch, the combination of a reciprocable latch-bolt, a dead bolt, means for retracting the latch-bolt, a lever connected with the latch-bolt and adapted to prevent movement of the dead bolt when the latch-bolt is in projected position, and a stop connected to said independently movable spindle member and adapted to be adjusted to and from a position where it will prevent retraction of the latch-bolt.

1. In a combined lock and latch, iheco1nbination of a reciprocable latcl1-bolt,a dead bolt, means for retracting the latch-bolt, including a two part spindle, one part of the spindle being independently rotatable through an arc of approximately relative to the other, means connected with the latch-bolt for preventing movement or the bolt when the dead latch-bolt is in projected position, and a stop'finger carried by the independently rotatable spindle member and adapted to be moved thereby to and from position to retain the latch-bolt projected.

5. In a combined lock and latch, the combination of a reciprocable latch-bolt, a dead bolt, means for retracting the latch-bolt, including a two part spindle, one part of the spindle being independently rotatable for a limited distance relative to the other, means connected with the latch-bolt for preventing movement of the dead bolt when the latch-bolt is in projected position, a stop finger carried by the independently rotataliile spindle member and adapted to be adjusted thereby toward and from position to retain the latch-bolt projected, and means normally preventing rotary movement of said independently movable spindle member.

6. Inn combined lock and latch, the combination of a reciprocable latch-bolt, a dead bolt, means for retracting the latch-bolt, in-

cluding a two part spindle, one part of the spmdlcbeing independently rotatable for a limited distance relative to the other, and provided with an annular recess or groove, means connected with the latch-bolt for preventing movemcnt of the gate bolt when the latch-bolt is in projected position, a stop JULIUS ARIGI.

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