US651685A - Combined latch and lock. - Google Patents

Description

No. 65|,685. r Patented June l2', |900. L. c.Y wETzEL.

COMBINED LATCH AN'D Lock.

Application led Oct. 17, 1899.)

`(No Model.)

` I C) FIG.2.

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v struction and combination of parts, as is here-y NITED STATES PATENT OFFICE.

LEWIS CALVIN WETZEL, OF BELLEFONTE, PENNSYLVAIA.

COMBINED LATCH AND LOCK.

SPECIFICATION forming part of Letters Patent No. 651,685, dated J une 12, 1900.

Application filed October 17,1899. Serial No. 733,882. (No model.)

Y To @ZZ whom t may concern.-

ject to provide novel, simple, and inexpensive details of construction in a device of the indicated character which adapts the slidable latch-bolt thereof to serve as a lockingbolt and which can only be operated from the outer side of the door by a suitable key.

The invention consists in the novel coninafter described, and defined in the claims. Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding .parts in all the figures.

Figure l is a side view of the lock with one side wall of the case removed, exposing the working parts of the lock. Fig. 2 is a transverse sectional view substantially on the line 2 2 in Fig. 1. Fig. 3 is a sectional plan View taken substantially on the line 3 3 in Fig. l. Fig. 4 is a sectional plan view substantially on the line 4. 4 in Fig. 1, and Fig. 5 isa fragmentary sectional plan view taken substantially on the line 5 5 in Fig. l.

The lock-casing 6 shown in the drawings is for a class of locks known as mortiselocks, which in service occupy recesses formed to receive them in the free vertical edges of doors; but it is to be understood that a lock-case may be employed which is adapted for exterior attachment upon the inner side of a door, if this' is desired, and in either case one side wall 6a of the casing is made removable and securable in place by a single screw a. (Sectionallyindicated in Fig. l.) A

face-plate 6b is formed or secured upon one edge of the casing 6 for attachment to th'e free edge of the door when the lock-case is embedded in the mortise, this being a com'.

mon provision for mortise-locks.

shown in Fig. l. On the limb of the L- shaped lever 7, which projects in a nearlyhorizontal plane toward Vthe faceplate 6", a gravity-block 7a is formed or secured, and said block normally rests upon a projection c, that is an integral formation on the upper edge of the locking-bolt 8. The bolt S slides Yback and forth through the face-plate G and carries a cross-pin d, which contacts loosely with the sides of the casing G, said pin being positioned below and nearly in vertical alinement with the projection c and serving to `insure a correct reciprocation of the locking bolt.

Two spaced lugs e c are formed laterally on the locking-bolt S nearits inner end, and between these lugs a keyhole f is formed oppositely in the side walls of the casing 6 to receive a suitably-shaped key 9 from either side of the lock-case, said key by manipulation being adapted to throw the bolt 8 back or forth, as may be desired, by the contact of its bit with an appropriate lug c or e' for locking or unlocking the bolt 8.

Two spaced notches g g are formed in the lower edge of the locking-bolt 8, and either of said notches will loosely receive the body of a cross-bar 71., which is a fixture on the casing 6, and is so positioned that the notch g will receive it when the bolt 8 is thrown fully outward by the key 9 and the other notch g will receive said cross-bar when the locking-bolt is fully retracted.

On the upper extremity of the upright limb 7b ot the L-shaped lever 7 the inner end of the latch-bolt 10 is pivoted, as at k, the oppo- Vsite end or latching-nose 10SL thereon working `loosely through the face-plate 6b when the latch-bolt is reciprocated.

As shown in Figs. l and 3, a shoulder t' is formed on the upper side of the latch-bolt 10 behind the latching-nose 10, and alike shoulder may also be provided on the lower side of said latch-bolt opposite the upper one. A locking-dog l1 is pivoted'in the side Walls of the casing 6 above the latch-bolt 10, and on the pivot-shaft of said dog, which extends through the side wall of the lock-casing which is innermost when in place on a door, a short lever ll is secured, which by manipulation will rock said pivot-shaft and cause the free end of the dog l1 to 'engage withA the upper shoulder i or be retracted therefrom, as may IOO The latch-bolt when unshackled is adapted for retraction from either side of the door by the knob-spindle 12, that is represented in Figs. 1, 2, and 3, said spindle in complete form having aknob offany preferred design4 mounted on each end andv secured thereon, as usual. On the spindle 12 within thecasing 6 a cam-hub 13 is mounted, vand the up- -rright limb 7b of the L-shaped lever 7 may be' notched, as indicated in Fig. l, to accommodatethe cam-hub 13, that isA positionedforward of and close to the limb 7b, so that a depending toe 13a on the cam-hub will have contact with the forward edge of the upright limb7b and by rocking movement of the cam- 'hub in direction of the arrow .fr in Fig. 1' rock the gravity-block 7 upwardly and draw the latch-bolt 10 inwardly, as indicated by dotted A lines in Fig. 1. An arm 13b is formed on the cam-hub 13 and is vertically disposed when the gravity-block 7a is in a normal position or seated upon the projection c of the locking-bolt S, as shown by full lines in Fig. 1.v

"The two normally-horizontal tumbler-fingers 14 are pivoted in the upper portion'ofy the `casing 6 side by side, their pivot-stud m projecting from the fixed side wall of the cas ing near the pivot shaft of the locking-dog .11' and loosely'engaging the forward ends of the tumbler-fingers, as shown in Figs.v 1 and 2. The'free portions 14 of the tumbler-iingers 14 are notched in their lower edges at a- .point directly above the upright arm 13b andV receive the upper end of said arm when the latch-bolt 10 is projected, said arm 13b passing freely up behind the body of the latch` bolt, so as to enable it to have a locked engagement with the gravity-actuated bodies of .the tumbler-fingers, as shown by full lines in Fig. 1.

The lower edges of the j 14 are cut away toward their free ends 1li to afford clearance for akeyhole n, that extends oppositely Through each side wall of the easing 6 for admission of a proper key' (not shown) from the exterior sof the door to engage the bit thereof with the tumbler-fingers `for theirupward rocking movement 'and consequent release of the upright arm 131. Be-

- Vlow the tumbler-finger 14 and above the slid- .able latch-bolt 10 atripping-arm 15 is held to rock by the transversely-disposed rock-shaft 16, held loosely in perforations of the sides of the casing 6, said shaft being adapted for rocking'movement by the thumbpiece 17, ixed upon the end of said shaft exterior of the casing, as shown in Figs. 2 andl. On

the end of the tripping-arm 15, which is short-` est, a cam-head 15a is provided, which, if

fturnedjtoward lthe lower edges of the tumtwo tumbler-fingersv bier-fingers 1-1, will raise-them sufficiently to release their. notched portions from engagement with the upper end of the upright arm 13b, as shown by dotted lines in Fig. 1.

When the cam-head 15a is rocked to lift the tumbler-fingers 14, the longer and thinner portion of the tripping-arm 15 will pass behind the body of the latch-bolt 10 and at the free end thereof impinge upon the forward edge of the upright arm 13", so as to rock it away from the notches in the tu mbler-ingers 14 simultaneously with the release of said arm from engagement with the notches, as indicatedb'y dotted lines in Fig.' 1.

In some constructions of the lock it maybe preferred to dispense with knobs on the spindie 12 and simply journal itin the sides of the casing 6. lf this is done, the thumb-piece 17 may be used to retract the latch-bolt on one side of the door, and a key inserted in the keyhole nin the opposite side of the lock-case maybe employed for drawing the latch-bolt away from a hasp-plate, with which it may be engaged.

If preferred, a keyhole o maybe formed oppositely in the side walls of the casing adjacent to a guard 18, which is positioned below and near the horizontal limb of the L- shaped lever 7, so that the introduction of a suitable key into the keyhole o will permit of the upward rocking movement of the weighted limb of the L-shaped lever 7 and a retractionof thelatch-bolt lOin an obvious manner.

Referring again to the locking-bolt 8, it will be seen that the bit ofthe key 9 must be exactly'proportioned in length to suit the spaced interval vbetween the lugs ee' on the inner end of the locking-bolt, as in case said bit is not of sufiicient'length the rear end of the locking-bolt will not be raised up far enough to clear the bar h from l(he walls of the notch g it occupies when the nose of the locking-boltis projected from the lock-case, and the bolt cannot be retracted by a key that is not correct in form nor can the bolt be thrown to'lock it lt will be seen that if the L-shapedlever-7 is in normal adjustment, which adapts the gravity-block 7 to rest upon the projection c, this will not impede the operation oflocking or unlocking the bolt 8 unless the locking-dog 11 is adjusted to engage its nose with the shoulder -z on the latch-bolt 10. In this case the retention of the latch-bolt' 10 in projected adjustment will prevent the upward rocking movement of the gravity-block 7 on the lever 7, and as said block rests upon the locking-boltS while the latter is thrown to lock'it evidently both the latch-bolt and locking-bolt will'be held from retraction by the locked adjustment of the dog 11.

It will be evident from the foregoing description that a cheap, strong, andreliable latch and lock is aorded, which is very secure and that is available for use generally, being adapted for application to doors guard- -ing exits fromfa building or upon doors be- IDO IIO

' hub` having a toc adaptedto rock the L` tween communicating rooms of a dwellinghouse.

From the peculiar construction of the device the latch-bolt 7 may be turned over so that the sloped face ot' its nosepiece 7a may be changed to face in an opposite direction and the lock be thus adapted for application to doors that swing in opposite directions,and the look is also well adapted for use on either right-hand or left-hand swinging doors.

Having thus described my invention, I 'claim as new and desire to secure by Letters Patent- Vl. In a lock, the combination withacasing, an L-shaped lever pivoted in the casing, a gravity-block on the lower horizontal limb of the L-shaped lever and a slidable latch-bolt pivoted by its inner end on the upper end of the upright limb of the L-shaped lever, of a knob-spindle rockable in the casing, a camshaped lever and retract the latch-bolt, an

, upright arm on the cam-hub, two horizontal tumbler-fingers notched to engage and lock the upright arm and thus prevent rocking of the knob-spindle, and means substantially as described for release of the tumbler-fingers from the upright arm.

2. In a lock, the combination with a casing an L-shapcd lever pivoted at its corner therein, having a gravity-block on its lower horizontal limb, and a slidablelatch-bolt pivoted at its inner end on the upper end of the L- shaped lever, oi a knob-spindle rockable in the casing, a cam-hub on said spindle'having a toe adapted to rock the L.shaped lever and retract the latch-bolt, an upright arm on the cam-hub, one or lnore horizontal tumbler-fingers pivoted by one end upon the casing, and notched on the lower edge, to engage the u pper end of said arm to lock the latch-bolt from retraction, and means such as a keyhole in the casing and a suitable key, whereby the tumbler-finger may be disengaged from the upright arm of the cam-bolt, and the latchbolt released.

-3. In a lock, the combination with acasing, a slidable latch-bolt therein,- an L-shaped lever pivoted in the casing at its angle, and having its lower limb weighted, the upright limb oi' said lever being pivoted upon the inner end of the latch-bolt,of a knob-spindle rockable in the easing, a cam-hub thereon having a toe engaging the upright limb of the L-shaped lever, and two pivoted tumbler-iingers operative by a key, and notched to engage with the upper end of the upright arm on the cam-hub, thereby holding the knobspindle from rotation, and means such as a key, adapted-to rock the weighted limb of the L-shaped lever upwardly and thereby retract the latch-bolt.

4. The combination with a casing, a slid--A able latch-bolt therein, a rockable L-shaped lever weighted in its lower limb and pivoted by its upper limb upon the inner end of the latch-bolt, a rockable knob-spindle, a calnhub thereon having a toe pressing the upright limb of the L-shapcd lever, an arm on the cam-hub projecting upwardly, and two pivoted horizontal tumbler-fingers, notched in their lower edges to receive the upper end of the upright limb and thus preventrotation of the knob-spindle, of a tripping-arm held to rock in the casing below the tumbler-fingers, a thu mb-piece on the outer end of the shaft carrying the tripping-arm, which arm is adapted to lift the tumbler-fingers by one of its ends, and rock the upright arm of the cam-hub with its remaining member, so as to release the knob-spindle.

. The combination with a casing, an L- shapedV lever pivoted in the casing at its angular corner, so that one'weighted limb is nearly horizontal and the other limb upright therein, a latch-bolt slidable through an end wall of the casing having its inner end pivoted upon said upright limb, a knob-spindle, a cam-hub thereon, which when rocked, will draw the latch-bolt, an `upright arm on said limb, and means to lock said arm from rocking releasable with a key, of a locking-bolt whereon the weighted limb of the L-shaped lever rests when the latch-bolt is slid outwai-diy, said bolt having two spaced notches in its lower edge, a fixed cross-bar on the casing which will enter either notch to hold the locking-bolt projected or retracted, a keyhole and a key that may be entered in said keyhole, and by manipulation raise and slide the locking-bolt when the latch-bolt is freeV to slide. Y

. LEWIS CALVIN WETZEL. Witnesses;

NEWLIN II. IMRE, OSCAR WETZEL.

ICO

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