US1439012A - Lock - Google Patents

Description

Deco 19, 1922..

G. A. LONG.

LOCK.

FILED JUNEI8. 1921.

INVENTOR.

ATTORNEYS.

Patented Dec. l9, 11922.

Ltthtllll GEORGE A. LONG, 015 HARTFORD, CONNECTICUT.

- LOCK.

Application filed June 18,

To all whom it may concern.

citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a specification.

This invention relates to looks and among the objects of the invention are the provision of an article of the character set forth by which several acts are necessary before the bolt or equivalent part can be drawn back. This drawing back ofthe bolt or locker is accomplished by separately acting means, one means securing a partial action of the .barred or analogous element, while another means secures an additional action of the barrel or like part in order to' draw back the bolt. l have spoken of a plurality of means and by this include one or more keys because while desirably the action of the barrel to draw back the bolt, is effected through the action of a single key this need not always be necessary. A lock involving the invention is naturally capable of use advantageously in widely different fields although it is of particular utility when associated with a telephone pay-station, being employed in this use in conjunction with the money or cash drawer.

In the drawings accompanying and forming partof the present specification l have shown in detail one of the several advantageous forms of embodiment of the invention which to enable those skilled in the art to practice the same will be set forth fully in the following description. Obviously I am in no sense restricted to such disclosure. I may depart therefrom in a number of respects within the scope of the invention defined by the claims following said description.

Referring to said drawings:

Figure 1 is a perspective view of a. lock involving the invention and showingalso a novel form of key.

Fig.2 is a perspective view of the lock with the cap removed and the key in place.

Fig. 3 is a vertical sectional view ofthe lock and on an enlarged scale.

Fig. 4 is a front elevation of the central portion of the lock and with the cap re-/ moved, also enlarged.

Like characters refer to like parts throughout the several views.

1921. Serial lilo. 478,515.

A look involving the invention has a plurality of distinct means of operation. While there may be any number of these there are desirably two. The action of the lock is efiected desirably by key means although this may not be necessary in all cases. When, however, key means is util zed, l prefer to employ for the purpose a single key, one portion of which eflects the partial action of the look while another usually completes the action. With the foregoing general observations T will now more particularly describe the structural portlon.

This structure involves a back 2 which in practice has suitable means to attach it to a part. Usually it has a number of holes,

3, by which it can be fastened by means of screws passing through the holes to a proper part.

As represented the lock is of barrel type, having for such purpose the rotary barrel a which as more or less common fashion, is of cylindrical form and is mounted for turning movement. The bolt or locker shown is denoted by 6. The pin block 5 is covered by the cap 7 through an opening in which the barrel 4 extends so that the bit portion of a key hereinafter described can be inserted in the longitudinallyextending slot 8 of the barrel to effect the turning of the barrel and the consequent retraction of the bolt 6, provided the right key be used.

The" initial movement of the barrel 4: is generally governed by compound pins as 9 set in sockets 9 in the pin block 5 and backed by springs as 10. The barrel 4 has within it and in proper longitudinally positioned openings balls as'll which when the barrel 4 is in its initial position are sustained by the tips of the pins 9 then in the sockets 9' to prevent the rotation of the barrel 4 unless a properly bitted key be inserted into the slot 8 of the barrel 4;. In this event the balls 11 will simultaneously thrust radially outward the pins 9 until the tip portions of the pins are in the plane of the the partial-turning of the barrel, continued movement thereof being prevented unless the tumblers or equivalent means controlling further movement of the barrel be moved to their retracted positions.

For the purpose set forth several levers such as 12 are pivotally mounted on the back 1110 2 and are held in their initial positions as by springs 13 acting thereagainst. The tumblers 12'are arranged in a row situated lon-- gitudinally of the barrel 4 and are adapted to be retracted concurrently through the action of a proper key, the bit portion of which engages the tumblers for such purpose, when the barrel 4 is turned sufiicintly to enable the key to encounter the tumblers. It "will be assumed that the proper key has been introduced and thatit has operated the balls 11 in the manner hereinafter described to retract the pins 9 and cause the partial turning of the barrel '4 until such key, assumed to be the correct one, strikes the tumblers 12 atwhich point the key-on the further I turning of the barrel draws back the levers.

The key shown for operating the lock is denoted in a general way by 14 and it com-' prises the body 15 terminating at its outer end in a bow 16 and having on its bit portion or shank the teeth or bits 17 which co-operate with the pins 9 and the teeth or blers 12. 7

,-It will be assumed that the proper key such as that denoted by 14 has been lns'erted bits 18 which. co-operate with the tuminto the slot 8. When the key bottoms the teeth 17: engage the 'balls 11. and force them all outward so that the balls can cause the pins 9*to be retracted until the tip surfaces of the-pins are coincident with the circumference of the barrel which permits the bar rel to be turned by the key until the latter encounters the tumblers 12.

The bolt is furnished with a stump 20 having on its under side the notch or chan-' nel' 21 co-operative with lugs 22 on the levers 12. When the lugs are seated in the notch of channel the bolt .6 can not be drawn back; When, however, the tumblers 12 are retracted in the manner Set forth through the action of the proper key, the lugs 22 will be moved out of the path of the stump 20 so that the bolt 6 can be drawn back which is accomplished by the lug 23 on the barrel engaging the bolt 6 as the barrel turns through the action of the key which turning is permitted provided the tumblers all be drawn back. Y

.The barrel 4 as shown has upon its pe riphery a cam 24practically of wedge formation and 'which on the return movement of the barrel rides against the upper ends of the upper sections of the pins 9 so as to cause the pins to be positively retracted and permit without interference the free return of the barrel '4 to its initial position.

What have been termed hereinbefore as tumbler's are also known among certain manufacturers as levers. I might also note that I provide separately active means of different type for controlling the releasing motion of the locker, desirably, one means being operative. after the other has exercised its function.

What .I' claim is: a 1. A lock'provided with a bolt and also provided with a barrel having means for 1 retracting the bolt, key operative. pins for preventing the initial turning of the barrel, and key operative levers for preventing the complete turning of the barrel.

2.,A lock provided with a bolt and also provided with .a barrel having means for retracting-the bolt, key operative pins for controlling the turning of the barrel, key

operative levers for preventing the complete turning of the barrel, means carried -by the barrel for returning the pins to GEORGE A. LONG.

Inpresence of EDWARD A. HAGEY, HELEN H. HAWKINS.

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