US329456A - Albeet kibks - Google Patents

Description

(ModeL) A. KIRKS.

LOCK.

No. 329,456. Patented Nov. 3, 1885.

5 WITNESSES NVENTOR ATTORNEY Unirnn Sterne Parent Orrrcn,

ALBERT KIRKS, OF CANTON, OHIO, ASSIGNOR TO THE DIEBOLD SAFE AND LOOK COMPANY, OF SAME PLACE.

LOCK.

BPECIPICATION forming part of Letters Patent No. 329,456, dated November 3, 1885.

Application filed August 17, 1885. Serial No. 174,591.

ToaZZ whom it may concern:

Be it known that I, ALBERT KIRKS, a citizen of the United States, and a resident of Canton, county of Stark, State of Ohio, have invented a new and useful Improvement in Safe-Deposit Locks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification.

My invention relates to an improvement in the construction of key-locks for safe-deposit boxes which are operated by means of two keys of different forms. One key, generally called the master or pass key, operates on all the locks, and is kept in possession by the cashier or other official in charge. The other is an individual key for each box, and belongs to the renter of same.

Escutcheons were formerly used in connection with safe-deposit locks to cover and secure the key-holes, the key of the escutcheon being used by the cashier as apass-key for the locked box. These escutcheons, however, proved a source of constant annoyance to the cashier, by having to be unlocked and locked again whenever the boxes were opened to the customers, because the escutcheon could not be attached securelyon the outside of the door, and were an interference to the full opening of the door, by reason of the projection striking the adjoining boxes, as well as being dustcatchers. To overcome and avoid these objectionable features, a look was constructed with but one key-hole to accommodate both 5 the master and individual keys. The mechanism for each key was within the same lookcase, and required the service first of the inaster-key and then of the individual key to be opened; but as both keys employed the same key-hole, trouble and confusion were frequently caused by a failure to use the keysin the right succession. Astep in advance of this was the invention of a lock with two key-holes, so constructed that the keys could not be interchanged or inserted but where they belonged; but these latter locks left the keyholes unprotected, so that other persons could have accessto the same, and, by accident or design, tamper with and derange the lock by using 59 keys notintendedtobeinserted therein. Thus (Model.)

instances are also recorded where locks were opened by parties operating in the manner indicated. The present invention is designed to protect the key-holes of such locks without resorting to escutcheons on the outside of the 5 5 door. The device provides a mechanism entirely within the lock, which operates a blind to cover the inside entrance of the key-hole, so that a key cannot enter from the outside until the obstruction is removed or thrown off by 60 the master-key. The shape and style of this contrivance may be made differently to conform to the different construction of locks; but as an illustration of the manner of its application recourse is here had to alock which is provided with two key-holes, both the master and individual keys operating the same set of tumblers, the master-key lifting one or more, and the other key working on the remaining tumblers. In this lock I cut a groove in the post,which receives the individual key at a place beneath where one of the tumblers rests, and make a slot of suflicient depth to allow the tumbler to drop down below the point of the key-entrance. This tumbler then blocks up 7 5 the opening for the individual key 5 but on the introduction of the master-key it operates in its place to lift up and remove said obstruction and give entrance to the individual key. The tumbler thus employed is so formed as to cover the key-hole only so far as there are no grooves in the key. The key can therefore be removed without the assistance of the master-key, and the custodian of same need not be kept in attendance for the purpose of locking the customers box. By the withdrawal of his key his box is locked and the key-hole closed automatically by action of the tumbler which forms the obstruction.

Figure l is a plan view showing the locklid A, revolving posts 13 and H, and the keyways a and a, also showing an obstruction, b, in the keyway a. Fig. 2 is same view, with lid A removed and the head of the revolving posts B and H cut away, leaving the stem or body of the posts in position, and again show ing an obstruction, Z), in the keyway a and the pass-key O entered; Fig. 3, same view, with the upper tumbler, No. 6, removed, the master-key 0 turned to a position at right angles 10:)

lock-bolt E thrown in and the master-key O" removed; Fig. 5, same view of lock-box F, the tumblers and revolving post removed, showing the lock-bolt F in position. longitudinal view showing the parts all in position, the pass-key having been entered and turned so as to raise tumbler No. and remove the obstruction from the keyway a ofthe individual key D, which is now in the-post and may be passed into the lock. Fig. 7 is an elevation of the revolving key-post B, showing groove 01 in cross-section and the-cam tfor throwing the lock-bolt.

. F isa quadrilateral lock-box provided with perforations c,through which screws or rivets may be passed to secure the lock in position, a spring-rest, e, threadedlid-supports f, perforationsg g, to support the ends of the keyposts B and H, an upwardly-projecting pin, t, to check or terminate the movement of the tumbler, also the elevations j, which check the movement of the pass-key. The lid'Ais adapted to the box F, and is providedwith a perforation, h, adapted topin h, and'upwardlyprojecting escutcheon-cylinders k k, that embrace and support the revolving key-posts B and H. The four corners of the lid may be cut away or perforated for the passage of screws or rivets. The lock-bolt is of theusual form, having a heavy rectangulanformed bolt-head and a flat plate extending into the lock, in which there is provided an oblong slot adapted to pin h, whichsupports the bolt in a position parallel with the sides of the lock-box. This boltis provided with a projecting rib, y, which is adapted to theslots in the end of the tumbler, and is also provided with a notch, r, on one side, for engagement with a cam or projection, i, from the rotary post B, by which engagement the bolt E is thrown to and fro. The tumblers number from one tosix, and are of the same general contour, excepting No. 5, whichis provided with adownwardly-projectingobstructing-blind, b, which will be hereinafter explained. The tumblersmay be made of sheet metal of about N o. 15, and in form to have a horizontal body part, G, and a downwardlyprojected toe, G, in one end, and aperforation, m, adapted to the post h, aboutwhich they rotate. The other endisprovided with aslot, 'n, which is cut at a point of elevation differing each one from the other, anda slot, o,receives and retains the spring 1;, which is formedabout the rounded end of each. tumbler and rests under the rib e, in which position the exertion of the spring tends to rotate the tumblers Fig. 6 is a about the pin h and in so doing to force the heads of the tumblers in a downwardly direction until theyrest upon the post B. The rotary post B is adapted at one of its ends to perforationgin the lock-box, and hasan outwardly-projecting cam, t, which, as the post is rotated, engages with the lock-bolt E in the notch r. A narrow groove extends through the length of the post out from the surface to the center, forming a keyway for the key D. In the body of this post, directly under tumbler No. 5, and at right angles with the key way, there is a groove, S, cut to the depth of the keyway. The other end of the post is enlarged, so as to cover the body of the key D. The post 11 has a groove or keyway cut through its entire length, and from the surface to the center, one end adapted tothe perforation g in the lock-box, the other end provided with acollared head, which rests under a shoulder in the escutcheon-cylinder k. The keywaysa anda are of unequal size The way a in post B is deeper and narrower than the way a in post H, so that the master-key C will not enter the keyway in post B, nor the individual key into the keyway innthe post H, as each key is adapted to the'way provided for it. The keys are fiat and have notched edges,- the notches. varied to circumstances. The master-keys for one set of locks may be duplicates, varying only for different sets of looks; but not so with the individual keys, as they should be fitted to one lock only. In this case the master-key is constructed with a projection, s, which engages with thetoe of tumbler No. 5, pressing it out', as seen in Fig. 3, and raising the body up, so that the slot 12. will be in line with the rib y, and the obstructing-blind b lifted out of the groove S, so that the individual key D may be entered, which is provided with grooves and, projections adapted to raise theremaining tumblers, so as to bring theseveral slots (indicated by-the dotted lines, see Fig. 2) in. line withthe' slot nin the tumbler raised by the master-key, and when so brought into line the rib y will enter theslotted ends of the tumblers, as thelockbolt is moved in by the cam t, and as the key and postare turned intoposition, as shown in Fig. 4. After the turning of thisindividual key and unlocking-the door the masterkey maybe withdrawn, as the door can be locked and the individual key withdrawn.

I do not wish to limit myself toyablind on any one of thetu mblers, as either of them, or more than one, may. be used for that purpose.

' Having thusfully described the nature and object of my invention, what I clain1,.an.d desireto secure by- Letters Patent, is-- 1. Ina safe-deposit lock having twoseparate key-holes on one side of the lock oper- IIO ated by two different -keys -a pass-key and a regular key-an obstruction adapted tocover the key-hole of the regular key, and a tumbler connected with the obstruction, whereby when the pass-key is introduced. and turned the tumbler is operated and the obstruction removed from the key-hole of the regular key, substantially as set forth.

2. In a safe-deposit lock having two separate key-holes 011 one side operated by two different keysa pass-key and a regular keya tumbler and an obstruction connected therewith,and adapted to cover the keyhole ot the regular key and prevent the insertion of the regular key without the assistance of the passkey, the parts being constructed and arranged to permit of the removal of the regular key without the assistance of the pass-key.

3. In a safe-deposit lock having two different key-holes on one side operated by two different keys, bot-h operating one set of tumblers, so that one key operates one part of the tumblers, the other key the remaining tumblers and the lock-bolt, one or more of the tumblers operated by the pass or master 20 I11 testimony whereof I have hereunto set 25 my hand this 15th day of August, A. D. 1885.

ALBERT KIRKS.

Witnesses: W. K. MILLER, BURT A. MILLER.

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