US1537049A - Key - Google Patents

Description

Mays, 1925.

' 3mm/Hoz @at j Gwen nog Patented May 5, 1.925.

PATENT OFFICE.l

EDWARD a. vrvns, or NEW Yonx, N. Y.,

ASSIGNOR TO VESDAL CREATIONS, INC., OF

NEW YORK, N. Y., A CORPORATION OF NEW YORK.

-i Application led' September 6, 1923. Serial No.' 661,219.

To all 'whom t may concern:

Be it known that EDWARD R. VIVES', a subjectof the King of Spain, and a resident of New York, in the county of New York and State of New York, has invented a certain new and useful Key, of which the following is a specification. The present invention relates to 'keys for combination locks of the`multiple-key type. In my copendingv application, vSerial No. 658.654, filed Aug. 2l,A 1923, I have described and claimed a-fombinationlock in which the combination may be changed by certain simple manipulations, each combination requiring a'v key individual thereto.

AThe lock described comprises a barrel adapted when Arotated to operate a bolt. The barrel is formed with an aXlal key way and with a longitudinal slot communicating I with the key way and opening at the periphery vof the barrel, said slot being filled with tumblers which are adapted to be moved radially of the barrelwhen a key is inserted` by the engagement therewith of projections or teeth on the upper edge of the key. To operate the combination it is nec- .essary'to move certain tumblers and vto leave unaffected the remainder, the particular tumblers to beoperated depending upon 80. the combination. The key for a given combination, therefore, must have its projections or teeth so arranged that when the key is inserted the necessary tumblers w1ll be operated and the remainder of the tum- 85 blers will be unaffected. l The present invention relates to akey or key form ada ted to be used with a lock such as descri ed in my copending application. The object of the 40 tion, in. general, is to provi e a key form of sim le and cheap construction which is adapte to be converted with facility into a key corresponding to any given combination for whlch the lock is set. More particu-lar objects and advantages of the invention will become apparent hereinafter.

Referring to the accompanying drawings for a s eciic disclosure of some key forms which Ihave chosen to embody my invention 1 'is a longitudinal section of a lockbarrel, showing in elevation a key insertd therein.

resent inven- Figure 2 is a side elevationof a key form showing certain modifications.

Figure 3 is a side elevation of another key form.

In the drawings the key is shown on an enlarged scale. Figure 1 illustrates in longitudinal section the barrel 10 vof al' lock constructed in accordance with the copending application referredE toJ above. This barrel 1s formed with an axial key way and with a wider longitudinal slot communicating with said key way and opening through the barrel. Said slot is filled with tumblers 11, which are adapted to coact with tumblers 12.` The particular tumblers 12 which are brought into registration with tumblers 11 will depend upon the@ combination. desired, as is fully set forth in my oopending application above cited. As will be understood .from Vmy copending application, each ward is provided with two angularly spaced inwardly opening slots, in only one of which there is a tumbler 12. In one position of the wards the tumblers 12 are opposite the tumblers 11 and normally project into the lslot of barrel 10,- preventing rotation thereof. In the other position of the wards the slot-s therein whlch do not carry tumblers are opposite the corres onding tumblers 11, so. that if any one o these tumblers is moved it will project into the-slot of its ward and thereby lock the barrel against rotation.- The combination of the lock therefore is determined by the positions of the wards. A key for any givenl combination should have teeth adapted t-o raise those tumblers 11 which have tumblers 12 in registration therewith, and should have spaces adapted to leave unaffected those tumblers 11 which have no registering tumblersv 12. Accordingly,the key shown in Figure 1 has teeth 14 adaptedto raise those tumbler's`11 which are opposite tumblers 12, and has s aces adapted to leavel unaffected theremalning tumblers 11. Figures 2 and 3 show a key form provided with a full set of teeth on its upper edge, the number of teeth being the same as the number of tumblers 11. Such a key form may be converted into a key corresponding to any givelr combination simply by breaking oif the necessary teeth. To

I facilitate the vbreaking off of the teeth, the

-tions in the bottom of the key way.'-

latter may be joined to the blade of the key by reduced portions, formed, for example, by scoring the teeth along the bases thereof, as indicated by the dotted line 15. The user of the number of these key forms, or they could be obtained from the dealer as required. course it would not be necessary to use a new key form, such as shown in Figures 2 and every time the combination is changed, it being obvious that one key form could be usedfor a number of different combinations. I

Figure 3 shows a key form adapted to be used with a lock barrel having a key way with plane bottom, the lower edge of the key in this view beingA straight. In ordervv to make the combination more diicult to solve, I may form the key with irre larities or undulations 16 on its lower ge, as shown in Fig. 1, and form the barrel 10 with complementary irregularities lor undula- Obviously in a lock of this construction the combination cannot be solved except by a key which not only has its teeth and spaces corresponding to the positions of the wards, but also has an irregular or undulating lower edge which exactly iitstlip irregularities in the bottom of the key Way so as not to lift tumblers 11 too far. In Fig. 2 the key is provided with projections 16 of somewhat different form from those of Fig. 1. In so far as the present invention is concerned the key may have any number or form of projections. In practice the locks will be manufactured with several .diierent numbers or forms of recesses or undulations in the bottom of the key ways and of course the keys will be made with corresponding irregularities or undulations. In a lock system of this character it would be necessary to identify the keys with the corresponding locks. This may be done by stamping or lock would be furnished with a ILuengo-na otherwise aifixing to the locks of one style and the keys'corresponding thereto a lcommon identification mark or number.

Now having particularly described my invention, what I claim as new and desire to secure by Letters Patent is y 1. A key blank consisting of a shank or blade provided along the upper edge thereof with a plurality of detachable teeth of uniform'length, the ends of said teeth deiiingv a line substantially parallel with said e ge. a

2.A key form consistin of ahandleand a blade and a plurality o regularly spaced projecting from the edge of said blade, said parts forming an integral' structure.

3. A key form consisting of a handle an a shank or blade and a plurality of regularly spaced teeth of uniform length alon the upper edge of said blade -and joine thereto by reduced portions. l

4.v A key having a shank or blade provided with a plurality of teeth along the upper edge thereof and having a plurallty of projections along its lower edge.

I5. A key having a shank or blade provided with a plurality of teeth along the upper edge thereof and having undulations in its lower edge.

6. A key form consisting of a handle and a blade, said blade having a plurality of regularly spaced easily detachable teeth on its upper edge and having a plurality of projections along its lower edge.

7. A key form consisting of a handle and a blade, said blade having a plurality of regularly spaced easily detachable teeth on irts ieipper edge and having an undulating lower ge' In testimony whereof I hereunto aiiix my signature.

y EDWARD a vivas.

sol

feasily detachable teeth of uniform length"

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