US256263A - Iarvey c - Google Patents

Description

(Model.) E. G. A LDRICH` Patented Apr. `11, 1882'.

Pigna Figui v VWTNESSEB' Nrrun States IARVEY C. ALDRICH, OF NORWICH, CONNECTICUT, ASSIGNCR, BY DIRECT AND MESNE ASSIGNMENTS, OF ELEVEN-TIVELFTHS 'IO VM; II. BABCOCK, OF SAME PLACE, CECI-{Gli} H. ALDRICI-I AND RICHARD V. I). VOOI), BOTH OF ORANGETONVAN, AND HENRY C. TOWNSEJD, OF NEW YORK, N. Y.

SPECIFICATION forming part of Letters Patent No. 256,263, dated April .11, 1882,

i Application filed February-2,1881. (Medel.)

To all whom t may concern Be it known that I, HARVEY C. ALDRICH, a citizen ot` the United States, residing at Norwich, in the county ot' New London and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the followingis a specitication.

The general object of my invention is to'improve the simplicity and cheapness of locks, ro and at the same time to niake'it possible to construct a lock with very few pieces that shall` be as secure from picking and tampering with as more complicated locksemployinga multi- Hpli'city of tumblers and internal parts.

My invention relates more particularly to the cons-truction of a tumbler and the manner in whichit is made to operate in conjunction with the other parts ot' the lock. Instead of employing a number of separate tumblers, as

zo has heretofore been found necessary in order to give a reasonable degree of security to the lock, I make use of what may be termed a single7 tumbler, provided with one or more locking or (logging points, so disposed that 2 5 the key,when inserted in the lock to act upon the tumbler or part with which itis connected and with which it moves, propels the same or imparts a positive movement thereto in a direction to cause the one or more lugs, pins, or 3o projections upon the tumbler to pass one or more notches, slots, perforatons, or recesses in the key itself. The tumbler may lock, de# tain, or control the movements of the lock mechanism in any desirable manner, so that, nnless the key ne properly notched, slotted, perforated, or recessed to correspond with the one or more dogs, lugs, or projections upon the tumbler, the said dogs, lugs, or projections upon the tumbler will be forced :into contact 4o with the key by the movement of the latter, and be thus prevented from completing the movement necessary to unlock the parts.

Having now described the general principles -of my invention, I will proceed to describe some ot' the ways in which it may be carried into practice, and in which a tumbler constructedin accordance with that principle may beeppledltq locks.

In the accompanying' drawings, Figure l is a perspective view, showing one method of 5o applying my invention to padlocks. Fig. 2 is a side view of a notched key adapted to allow lugs arranged as shown upon thc tumbler to pass through the key. Fig. 3 showslny invention applied to a night-latch of simple construction. Fig. 4 is a face view of a tumbler, showing a single lug or projection differently disposed from those shown in Fig. l, and a perforated key adapted foruse with a tumbler of the form shown inthis figure. 6o

.Referring to Fig. 1, A shows the hasp or shackle of the padlock, provided with a catch, x, upon its end, adapted to engage with and t., be locked by a hook or latch, c, upon the end ot' or carried by the tumbler M, the latter con- 65 sisting in the present case of a pivotcd piece pivotedV upon a stud in the casing and provided with lugs or projections d d d, disposed at dit ferent distances from its end. As here shown, the lugs or projections extend from the edge 7o of the tumbler partially across its face, the two extreme projections starting from the up per and the intermediate one from the lower edge.

The key B is correspondingly notched, as shown in Fig. 2. A spring for causing the hook or catch upon the tumbler to engage 'with the hasp is indicated atj'. The key is inserted through a slot at the bottom of the case, and is guided so that its end will impinge against 8o a projection, h, upon the pivotedtumblerand swing or propel the same against the action of the spring so as to unlock the hasp. At the same time the lugs are propelled toward the side of the key and enter or pass the openings upon the key.

Should an improper]y-constructed key be inserted, one or more of the lugs or projections will come into contact with the key and stop the movement ofthe tumbler and the key be- 9o fore the hasp is unlocked.

As will be observed, the lugs or project-ions extend across the face beyond the medial line, so as to overlap one another and prevent the insertion of a. small wire. v 9 5 lIt is obvious that the lugs may be disposed in very many ways, both with regard to the length and to thenwidth of the tumbler, and

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that they may be variously`shaped.

Many modifications in this respect will readily suggest themselves, and vas many lugs or projections may be used as is deemed desirable.

The application of the device toa night-latch will be readily' understood from Fig. 3. The

key is here represented as inserted and the i bolt or latch H withdrawn. As here shown, the tumbler is connected with the latch by means ot' a pin', P, upon the latch and a slot in the tumbler M. The key moves the latch and tumbler simultaneously.

I do not desire to limit myself to any particular form or disposition ot' the lugs or pro,- jeetions, or to any particular form of or method of mounting the part to which they are attached, as it is obviously within the scope of the invention to vary these particulars in many ways, so long as the parts are so arrangedthat the key, properly slotted, recessed, or perlorated, propels or moves the lugs or projections upon the tumbler so as to cause them to pass or avoid the key; nor do I limit myself to any particular form ot the immediate locking or unlocking devices which detainthe bolt or mechanism and are controlled by the tumbler, as there are very many ways of employing such devices in conjunction with a tumbler, and my invention lies Wholly in the tumbler immunitarie-tumult t Y c c and key combined as herein set forth. 1 have shown two ways of using a tumbler and key constructed in accordance with this principle; 35

but many others may be employed without departingfrom the spirit ot' theiuvention. By thev use of a single tumbler provided with a multiplicity of lugs or projections l attain all the security that is at present attained by the em- 4,0--

ployment ofa number of separate tumblers.

What I claim is Y 1. The combination,` substantially as described, of a tumbler provided with one or more lugs or projections andl akey suitablyq HARVEY C. ALDRICH.

Witnesses:

.W. S. DEARDEN, C. A. BYRNE.

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