US91479A - Improvement in combined latch and lock - Google Patents

Description

, lluted tapes datent Gtjyiiw.

Lette/rs Patent N 91,479, dated June 15, 1869.

IIPROVEMENT IN'CMBIND LATCH AND LOCK The Schedule referred to in these Letters Patent and making part of the name.

.To all whom it lmay concern:

Be it known that I, ANTON OcHsNER, of New Haven, in the county of New Haven, State of Connecticut, have invented a new and useful Improvement in Locks; and I do hereby declare the following tobe a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being hadto the accompanying drawing, formming part of this specitcation, in which drawing- Figure l is an interior view of a lock, to which I have applied my invention, part of the case being removed on VJthe tumbler-side of the lock, and the operating-parts being shown in condition to be operated,

either by the key, or by an ordinary spindle, such as is common in knob-locks. x

Figure 2 is also an interior view, the operativeparts being arranged so that the bolt can be operated only by the key.

Similar letters indicate corresponding parts.

This invention relates to the class of locks in which one and the same bolt is arranged to be operated either by a spindle and knobs, or by a key.

The letter A designates the bolt, which is properly guided in the lock-case by a'slot, B, and pin O.

The spindle D fits in the`nut E, and the ends of said nut are made to project through the sides of the lockcase, in the usual manner, so that the nut can be rotated by the spindle. Y

Upon the right-hand side of the nut E, observing the drawing, are arms FF, which .extend in opposite directions upward and downward, far` enough to operate the latch-boltA, as hereinafter explained.

The `inner sides ofthe arms F are convex, and form a continuous curve, but their 'sides which are toward the rear part of the'case are straight; and such straight sides operate against the lips G G', which project from thev forked continuations H Hjof the bolt A, in such a manner, that when the spindle D is turned in either direction, they will move the bolt backward.

The bolt A is' pnshed'forward by a spring, I, in the usual manner, so as to project its bevel-face beyond the face of the case, whenever the bolt is not pulled back either by the spindleD, or by the key.

The key-hole is seen at J, being made in a suitable place to enable the key to act upon the bolt and upon the tulnblers L L, which, according to my invention, are mounted upon the bolt, by means of a pin, K, so as always to move wit-h the bolt.

The tuinblers are pressed downward'by their respective springs M, so as to rest upon the stop N.

This stop N supports and guides the tumblers, and also limits their movements and that oi' 4the bolt, in their forward and backward movements, when the bolt is only operated bythe spindle A, at which times the Shoulders O O come againstV the stop N, and the bolt and tumblers are prevented from any further move-- ment.

Fig. 1 shows the lock in this condition, the bolt being capable of being operated both by the spindle D (which i has, on its ends, the usual knobs for handling it) and by a key inserted in the key-hole. y

My invent-ion embraces means for putting the spindle, or its nut, out of engagement with the bolt, so

that the bolt cannot be operated through the spindle, whether from the outside or the inside, but can be operated through the key-hole only.

1n carrying out this 'part of my invention, I so construct and arrange the tumblers, that they can be raised by the key high enough to bring the shoulders O of the tumblers clear ot the stop N, when, by the fuxther rotation of the key, the bolt and tumblers are pushed backward or inward, far enough to take the extremities of the forked inner ends ot' the bolt beyond the line of the arc described by the arms F of the nut E,so that, by turning the spindle, the ends of either of the said arms can be carried past the adjacent lip G or G', into the vacant space between such lip and the standard P of the case, where such arm becomes inoperative, and where, also, it becomes locked, by allowing the bolt to move forward, so as again to bring the shoulders O ofthe tumblers in front of the stop N. In that position, the ordinary play of the bolt does not carry the bolt far enough back to allow the nut E to assume its normal position, but said nut will remain in the diagonal position shown in fig. 2, where it is inoperative, and cannot impart any motion to the bolt.

'lhat arm F of the nut which is turned toward thetumblers, as shown in fig. 2, bears against a plate, Q, which is connected to the bolt by the same pivot K which connects the tumblers to the bolt.

.The pla-te Q is allowed to turn on its pivot, and when an arm of the nut E is thrown inward, as in fig. 2, it presses against said plate, and swings it around against the force of its spring S, to about the position shown in that figure, the tendency of the spring S, consequently, being to restore the nut to its ordinary straight position, whenever the upper arm of the nut is released from its locked position behind the extremity of the adjacent fork of the bolt, which is done by again bringing the tumblers high enough to bring their forward shoulders O above, so as to clear the stop N, and then forcing the bolt far enough backward to take the lip G of the bolt past the adjacent arm F of the-nut, when the spring-plate will be allowed to act on the convex side of the lower arm F, and so turn the nut automatically so far as to bring said arm F in front of the said lip G' of the bolt.

When the spindle D is put out of operation, the bolt is controlled and operated by the key ot' the lock only, and the bolt is then allowed to be moved by the key, forward far enough to bring the rear shoulder O of the tumblers forward of the stop N, when the tumblers will be pushed downward so as to bring the stop N into the notch T, which is formed behind said shoulder O. When these parts are in this position, the bolt beCOmeS locked, so that it cannot be pushed inward, or, in other words, cannot be unlocked except by restoring the stop N to its former position between the shoulders 0 O'.

It will be seen, therefore, that by my invention I produce a lock which can be operated as an ordinary door-latch, (the face of the bolt being bevelled, so that it can be moved back by coming in contact with the keeper,) and also as a spring night-lock, and also as a Y positive lock, or dead-lock.

It will also be observed, that by changing the arrangement or position oi the spring-plate Q, so that it ,will swing on the upper side of the bolt, instead of on the lower side, the said plate can be made to act against the upper arm F of the nut E, and, in that case, the lower arm F can be turned outward.

Having thus described my invention,

What l claim as new, and desire to secure by Letters Patent, is-

1. The spring-plate Q, pivoted on the bolt A, in combination with the two-armed nut E, substantially as described.

2. The combination of the sliding boltA H H with lips G G', the nut E, with arms F F, on the spindle D, the pivoted spring-tumblers L, with notch T and stops O O', the stop N, and pivoted spring-plate Q, all construeted and arranged, substantially as desi-ribed, to operate either as a night-lock,a knob door-latch, or as a positive, or dead-lock, as set forth.

This specification signed by me, this 9th day of January, 1869.

Witnesses: ANTON OOHSNER.

W. HAUFF, ERNEST F. KASTENHUBEB.

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