US596406A - Lock and latch - Google Patents

Description

(No Model.)

C. J. HAZARD.

` LOCK AND LATCH. No. 596,406. Patented Dec. 28,- 1897.

l.. www; A f: AAIIAMWAAAAMAJ n CHARLES J. HAZARD, OF KELLOGG, WEST VIRGINIA, ASSIGNOR OF ONE- HALF TO RUFUS SWITZER AND THOMAS A. WIATT, OF HUNTINGTON,

WEST VIRGINIA.

LOCK AND LATcH.

SPECIFICATION forming part 4of Letters Patent N o. 596,406, dated December 28, 1897. Application filed May 1l, 1897. Serial No. 636 ,094. (No model.)

.Tn all L11/1.0m, it may con/eerie:

Be it known that I, CHARLES J. HAZARD, a citizen of the United States, residing at Kellogg, in the county of Wayne and 'State' of West Virginia, have invented certain new and useful Improvements in a Combin ed Lock and Latch, of which the following is a specification, reference being had therein to the accompanying drawings.

In the drawings annexed, Figure 1 is a side elevation, one side of the casing removed; Fig. 2, a vertical section taken on the line 2 2 of Fig. 1 and showing the lock-casing embedded or mortised in a door, andFig. 3 a detail perspective of the parts employed to unlock the latch on the outside.

The object of the invention is to simplify and improve the construction, thereby rendering it efficient in operation and reducing the manufacture cost to a minimum, as more fully hereinafter set forth.

Referring to the drawings by numerals, 1 is the lock-casing; 2, the knob-spindle, provided with the oppositely-projecting arms 3, adapted t0 lift the latch-bolt, and et the latchbolt, working through a slot in the face-plate, as usual, and having its inner end enlarged sufficiently, as at 5, to act as a weight in normally projecting the bolt, the enlarged portion 5 of the bolt being pivoted at 6 in the upper left-hand corner of the lock-casing, as shown. The lower right-hand corner of the bolt-plate rests on a stop 7, and suitable knobs or bosses 8 are formed on the bolt-plate to guide the same in its movements, these bosses of course bearing against the opposite inner walls of the casing. The weight of the enlarged part 5 will normally force the bolt out through the face-plate; but should it be desired to project the bolt with more energy a coil-spring 9 may be connected to its lower inner end and to an adjacent part of the casing.

It will be observed that the bolt may be Withdrawn by turning the knob-spindle in either direction.

To lock the bolt inits projected position, I employ a sliding block 10, supported in the upper right-hand corner of the casing and adapted to slide forward over the upper inner corner of the bolt-plate and prevent the same being lifted. This lockblock is attached to a screw 11, which works through a slot l2 in the side wall of the casing and extends to the inside of the door, where it is provided with a milled head 13. This screw is tapped into the locking-block 10, so that by screwing it up tight the locking-block will remain in its adjusted position. The head 13 bears against Va suitable slotted plate 14, recessed into the inner side of the door; but when the lockcasing is secured to the face of the door and is not mortised this screw will of course bear against the exterior of the casing. Below the locking-block is pivotally mounted a turnpost 15, and on this post is loosely mounted an arm 16, whose upper tapered end engages a notch in the lower edge of the lock-block. The key 17 is used in connection with the turn-post and arm to withdraw the lock-block from outside the door, the lock-casing and door being of course provided with openings for the passage of the keys. The key employed in this connectionis a fiat one with oppositely-projecting win gs 18. The key-post 15 is slotted longitudinally for the reception of the key, and the arm 16 is provided with slots 19 in its face, on opposite sides of the post, which coincide with the slot in the post when the latter is properly set. By inserting the key in the slot of the key-post and then turning the key the wings of the latter will enter the slots 19 as soon as the wings coincide with the slots. Then by further turning the key the lock-block may be withdrawn from the bolt-plate or may be slid forward over lthe same to lock the door.

It "is obvious that the slot in the free end of the key-post and the notches 19 in the arm 16 and the wings 1S of the key may be greatly varied in arrangement and design to provide for a series of locks and corresponding keys.

Thus it will be seen that by means of the key the latch-bolt may be locked or unlocked from the outside, and that by means of the set-screw extending to the inside the latch may be locked or unlocked bya person inside of the house; and it will be further observed that by means of the clamp-screw the lockblock may be positively fastened in engagement With the latch-plate, thereby making a convenient night-latch and rendering it impossible for a person outside to move the lockblock even though he be provided With a key.

The peculi'arly-constructed key devices are also important. It Will be observed that by rotatively mounting the arm 16 on the keypost said arm may swing freely when the locking-block is operated from the inside, Whereby said arm may be held constantly in engagement with the locking-block, which is more reliable and less likely to get out of order than if the arm were fastened to the keypost and only made engagement With the locking-block When the latch-key were used. Furthermore, thus rotatively mounting the arm 16 permits the key-post to be independently rotated, thereby permitting an unusual variety of key slots and notches to be employed, it being obvious that the form and the relative arrangement of the slots in the post and the arm are susceptible of considerable variation.

Having thus fully described my invention,

What I claim, and desire to secure by Letters Patent, is-

In a combined lock and latch, the combination of a casing, a latch-bolt normally projected, a knob-spindle carrying means for retracting the latch-bolt, a sliding block Within the casing and adapted to engage the latchbolt to lock the same, means for sliding this lock and locking it from the inside, and key devices for sliding the locking-block from the outside, said key devices consisting of a keypost mounted in the inner wall of the casing below said sliding block and having its free end slotted longitudinally, and an arm pivoted on said post and rotative independently thereof and held constantly in engagement with the sliding block, this arm being provided With key-notches in its outer face, as and for the purpose set forth.

In testimony whereof I afXmy signature in presence of two Witnesses.

' CHARLES J. HAZARD.

Vitnesses:

W. W'. MAGooN, AZEL MOGURDY, Jr.

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