US95506A - Improvement in combined latch and lock - Google Patents

Description

taiiml :51am

peca entre N. PETRE, oFNnw-YoR-K, N. Y.

Letters- Patent No. 95,506, dated October 5,1869.

*wpv IMPROVEMENT IN COMBINED LATCH AND LOCK.

The Schedule referred to inl these Letters vPatent and making part of the same.

- ings, making a part of this specification, in which- `Figure l represents, in perspective, a view of the interior of the lockhthe cover being removed.

Figure 2 represents a section through the lock. Figure 3 represents a plan of the interior thereof. Figures 4 and 5 represent modifications of the same y general plan of construction and of operation, as that shown in figs. 1, 2, and 3. Y `The locks herein described and claimed may be termed latch-locks, as they all have a latch or bolt that isoperated by knobs on each side of the door,

when said bolt/or latch is not otherwise controlled, by a key, or its equivalent, turning a lever or eccentric hub in the lock, and thus disconnecting the bolt or latch from the action of the knobs.

The locks herein shown and described involve the .general characteristics of vconstruction and operation,

as shown and described in the patent granted to me on the 30th of July, 1867, but vary from that lock in their detail of construction, which adapts ,them for more general purposes, and makes them more secure as locks against being picked.

To enable others skilled inthe art to make and use my invention, I will proceed to describe the same with reference to thegdrawings. f

In figs. l and 3, A represents the end of a bevelledbolt, projecting through the edge of the box 'or case Bl VThis boltA within the case ispivoted at a to what may be termed the tumbler or interior portion, O, of the bolt. y

This portion C, in addition to its sliding with the bolt, has a motionat right angles to the line of the bolt; and'that the bolt proper shall snugly t the opening through which it shodts, there is a hinged or pivoted connection ata, that admits of the interior portion rising and falling without carrying the exterior portion with it.

On the interior portion C, there is one fixed arm or hook, c, which works in connection with theshoulder b on the hub D, through which the ordinary door-- knob shank passes; and there is hinged' to said piece c, at d, an arm, E, vwhose hook e works in connection with the shoulder f on said hub D. y

The object of the two arms, hooks, and shoulders, is that the bolt A may be drawn vinto the lock by turn'- ing the knobs either way, and when released, the reaction of the spring g shootsxit out again.-

Fis an' eccentric hub, in which the key-pin t is loosely placed, so that they will not necessarily move together. Ifthey did, a pair of nippers applied' to said pin could he used -ior turning the eccentric'.

In `the key G, which is guided by and turns on this pin It, there is a stud, l, which enters a hole, 2, in said hub F, by which the huh is turned, and unless this stud be accurately set in the keyorthe hole-'oe accu rately bored for the stud, the key will not turn the hub.

tric' rim thereof takes against the'interior piece O, and moves it upward against the action of the spring 3,

and so far upward that the shoulder'b, on the hub D,

fails to catch againstthe hooko, and consequently the turning ofthe hub by the knob or handle Will notopcrate on the bolt A, or its tumbler C, and thus the lock is inoperative without the key, and serves as a dead-latch lock. A pin or stud, 4, is arranged to prevent :the tunibler C from rising too high. On what `I term the tumbler C, and which, but'for the fact that it is pivoted to the bolt A, might be called a portion of the bolt itself, there is a projection, 1.4, which, when the eccentric F is turned far enough to raise said tumbler, takesinto a recess, 5, in the eccentric, and there holds unt-il thc key is again used to turn said eccentric'.

A spring, h, bears against the hinged portion E of the tumbler, to keep it Within the range of the shoulder fon the hub, but when the tumbler is raised up, said hinged portion E is prevented from rising with it by a stud or pin, 6, and, further, it swings the said portion back, so as to be out-of the reach of the shoulder on the hub, so that in the raised 4position of the tumbler the hub cannot act upon either of the arms, and the bolt cannot be operated.

A guide or way, 7`, on the lock-case,directs the tumbler in its backward and forward motions, and a projection, k, on the tumbler, coming against the lock-case, defines the forward or shooting-motion of the bolt.

'Ih'at the bolt may not partakeof orbe cramped by the upward movement of the tumbler, a spring, 7 bears against it, sothat said movement will merely operate the hinge at a, and not bind the bolt.

A pin, 8, prevents the eccentric from heilig turned in the wrong direction, or from `going clear' around, as the swell on the eccentric will not pass said pin, and

when theeccentric arrives at that part of' its throw 1 orbeat, where it raises the tumbler, and receives the projection 14 in its recess, the pin s stops any` further motion in that direction.

The hub D has short journals on its ends, which recess, I, cast or formed inthe cover H, through When this hub F is turned by the key, the eccenl which raised bearing the key-hole is alsomade. This protects the eccentric from being tampered with from the outside of the lock, or that side of it. l

lhe opposite end of the eccentric has a bearing in the lock-case, by shoulders forming a short journal thereon, and a boss, fm, on that end of the eccentric extends through and beyond the lock-case, on which a knob, I, is fastened, by a through-and-through pin, n, or otherwise, so that the eccentric may be worked by the knob on the inside, as well as by the key from the outside, and serve all the purposes of a night-latch or lock.V

The hub D is provided with the ordinary square hole o, for receiving the shank ofthe common door or latch-knobs, so that when serving as a latch, it. may be operated from either side ofthe door, but when it is a lock or a night-latch, as above' explained, these knobs will not operate the bolt.

. Figs. 4 and 5 represent another modification of the lock, in which the bolt A and the portion 0 are really united together rigidly, but occupying the same relations to the outside and inside of the case, as in the iirst-named and described lock. l

Instead of one arm, E, only, hinged to the portion C, there are two arms, E E, both acting in connection with the hub D and its shoulders, so that by turning the knob and hub in either direction a quarter turn,

- or thereabout, the bolt A will be drawn into the case,

and when released, the reaction of 4 the springs g g shoots the bolt out again.

The eccentric F, in this modification, has two beats or throws, and two, notches 5 5, one for each ofthe projections 14, on the two4 arms E, so as to throw and hold both hinged arms out of action with the hub D. i The key-pin fi is loose in this case; also, in the eccentric.

When the eccentric is turned, so, as to allow the hinged arms to come within the action of the shoulders on the hub, the springs g, by their reaction, draw said arms toward the hub, and there hold them with sucientforce to make their action with the hubl certain.

In this lock, there is one key-hole, viz, on the outside of the door, while on the inside it is operated by a knob or handle, I.

Having thus fully described my invention, and shown the several ways in which I construct and` operate my locks,

What I claim therein as new, and desire to secure by Letters Patent, isy 'lhe combination of the bolt A, its attachment O,

Witnesses:

J oHN WALKER', W. S. LIVINGSTON, Jr.

` N.. Perrin.

and arm or arms E, with the hub D and eccentric F, l

Images