US438862A - Latch and lock combined - Google Patents

Description

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W. SAMONIEL. LATCH AND LOCK COMBINED.

No. 438,862. Patented Oct. 21, 1890. l

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VILLIAM SAMONIEL, OF MOUNT CARMEL, ILLINOIS.

LATCH AND LOCK COMBINED.

SPECIFICATION forming part of Letters Patent No. 438,862, dated October 21, 1890.

Application tiled April 2, 1890. Serial No. 346,274. (Model.)

. by weights, and in which all springs are dispensed with, and my object is to produce a more simple, durable, and effective article than has hitherto been known.

With this end in view my invention consists in certain peculiarities and arrangements of parts more fully described hereinafter, and pointed out in the claims.

Referring to the accompanying drawings, Figure l is a plan view of my lock with the top of the casing removed, the bolt withdrawn, and the latch in its normal position; Fig. 2, a

similar view with the latch drawn back; Fig.

3, another like view showing the bolt extended and locked in position together with the latch; Figs. 4, 5, 6, 7, and 8, detail views of the parts which go to make the latch-operating mechanism and also of the night-slide; Fig. 9, a bottom view of the case-covering, and Fig. l0 a detail of the key.

The reference-letter A represents the outside casing, which contains the operating parts and is provided, as usual, with openings for the bolts in its side and a key-hole and perforation to receive the latch-tappet B. The latter is provided with the ordinary square opening for the knob-spindle and also with the projecting lugs b b. The bea-ringsurface a of the lug b extends at an angle to that of the lug b', and from the former depends a weight C, for a purpose hereinafter explained. This weight is held from the base of the casing and provided with a bearing by a stud c, projecting from the base, and beneath this weight the lower end ofthe latchbolt-operatin g lever D is pivoted. This lever is of the usual form, fitting around the tappet B, and provided with shoulders d d', iitting against the projections l) b', respectively,

of the latter, and from its upper end projects a pin e, on which the rear end of the latchbolt E is pivoted.

The outer end of the bolt E is formed in the ordinary Way, having a beveled face and shoulder e', bearing against the inside of the casing. Back of this shoulder and on each side of thebolt is formed a lug F, provided with an inclined curved inner shoulder or bearing portion f. The inclined shoulders of the two lugs extend in opposite directions, so that the lock is reversible and made applicable to either right or left hand doors by simply turning over the latch-bolt, which will bring one lug on the underside with its inclined shoulder extending rearwardly.

The shoulder is engaged by the short curved arm h of an elbow-lever G, which is pivoted on a pin g, projecting from the casing and situated above the rear end of the bolt. The opposite arm h of this lever is provided with a depending weight H, thus rendering it a gravitatiug lever. Hence it will be seen that the curved end h of the latter will have a constant pressure against the shoulder f to thus keep the latch-bolt projected and its shoulder e against the casing. V

In turning the knob to release the latch, whichever way it is turned, one projection of the tappet will be thrown against the corresponding shoulder on the lever D, and thus carry back the latter, thereby withdrawing i the bolt, the rear end of which is pivotally connected at eto this lever. As the bolt is drawn back, its lower lug F will have pressure against the curved arm of the elbow-lever G and will push back the latter, thus elevating its rear weighted end. When the knobs are released, the gravity of the weight H pulls down the elbow-lever, and thus again throws out the latch-bolt to its former position. In this it will be assisted by the weight C, depending from the tappet, which'will act to turn back the knobs to their original place. Thus the latch is eiciently and easily operated without the use of springs, and an ar- IOO The sliding locking-bolt O is of the usual form and is provided in its upper edge with the notches o o and in its lower edge with a V-shaped depression p, arranged to be engaged by the web of the key. Beneath the bolt the tumbler P operates, and consists of a gravitating lever having a weight P at its rear end, and provided at its upper edge with a projecting lug p, arranged to engage the notches o 0 of the bolt to hold the same in locked and unlocked adjustment.

The key Q is an ordinary one, being provided with the webs or ribs q q, one of which engages the V-shaped slot p of the lockingbolt to throw the latter forward and back, and the other operates beneath said bolt to lift the gravity-tumbler and free the notches of the bolt from its projecting lug. The bolt is guided and kept in proper position by the pins r r, projecting from the casing and its cover, respectively, the pin r also serving to keep the tumbler P against the casing. The operation of this locking mechanism will thus be apparent and needs no further explanation.

I also provide a dead-latch for securing the lock from the inside and rendering it burglarproof, which is arranged as follows: A slot R is formed in the base of the casing A and extends horizontally from the rear wall of the latter, and in this slot operates a slide S, which consists of a short shank or reduced portion s, which fits said slot, a knob or thumb-piece t on the outside of the casing, and a head u on the inside, provided with beveled upper and lower edges w. This slide is fitted in the slot and the head made to assume a vertical position, and the slot is so situated between the two weights that upon sliding the catch forward in the latter to the limit of the same its lower beveled edge will bear tightly upon the upper surface of the lower Weight, while its Lipper edge will enter and snugly fit a notch :r in the rear of the latch-weight, and thus the head is wedged between the two. It will be seen that when the parts have been fixed in this adjustment both the latch-bolt and locking-bolt will be securely locked in projected position, and hence a burglar-proof lock effected, which cannot be released except by withdrawing the night-slide from the inside.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination of the latch-bolt provided with a suitable shoulder, an elbow-lever pivoted to the casing and having one end engaging said shoulder and the opposite end weighted, a lever pivoted at one end to the casing and at the other to the latch-bolt, and a tappet having oppositely-extending proj ections, each fitting against said leverintermediate of its pivotal points, whereby the rotation of the tappet in either direction causes the same movement of the lever and bolt, substantially as described.

2. The combination of the latch-bolt provided with a suitable shoulder, an elbowlever pivoted to the casing and having one end engaging said shoulder and the opposite end weighted, a lever pivoted at one end to the casing and at the other to the latch-bolt, a tappet having projections bearing against said lever, and a weight depending from the lower side of said tappet, substantially as and for the purpose described.

In a combined lock and latch, the combination of a latch-bolt, a lever engaging the same, a weight on the rear end of said lever, a locking-bolt, a tumbler for the saine, a weight on said tumbler, and a slide arranged to be wedged between said weights to lock the bolts, substantially as described.

In testimony whereof I aiix my signature in presence of two witnesses.

IVILLIAM SAMONIEL. Vitnesses:

A. C. TEATER, WILLIAM BIRKETT.

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