US1002232A - Alarm for cash-boxes. - Google Patents

Description

W. 1:. DAWSON & R. McALPINE.

ALARM FOR: CASH BOXES. APPLICATION FILED SEPT.'11, 1908.

1,002,232 Patented Sept. 5,1911.

BOTH 0F DETROIT, M CHIGAN.

' ALARM-Eon sass-Boxes. it

Applicationfiled September '11, 1908; se ial-no. 452,623.

.Michigan, have invented certain new and useful Improvements in Alarms for Cash- Boxes,.of which the following is a specification, reference being had therein ,to the accompanying drawings.

- The invention relates to'alarms for cash boxes and is morekparticularly designed for use in 'COIIDQCtlODWltll telephone instrumentsatpay stations. 1

[It is usual to provide telephone instruments, at pay stations with a cash box con-.-

nected therewith intow'hich the toll for the use ofthe instrument is placed by the user.

forded for the robbing of the box by the thief in comparative concealment.

As the instruments arefrequently placed i-nslde of a cabinet or booth opportunity is af- At other j-i f;stations the instrument is placed on a desk or counter but is usually provided with a cord, connection which forms the sole means of attachment. Itis therefore only necessary for-the thief to pickthe cord and to then carry the instrument ofi bodily-wash box and all.

vIt is the object of the present invention to provide an effective guard oralarm which 'peculiar construction,

will immediately indicate any unlawful tam-I perin with the instrument.

To this end the invention consists in the peculiar construction and arrangement of an electric alarm guarding the cash drawer of the instrument, and further in the means by which the cutting of the circuit or the detachment of the instrument'will also sound the alarm.

The invention still further consists in the arrangement combination of parts as hereinafter set forth.

I'nthe drawingsFigure 1 is an elevation-jof the telephone instrument and cash box indicating diagrammatically the alarm cincuits; Fig. 2 is a perspective view of the o operated by both clrcuits, and by a distinct battery Q; It is therefore apparent that the bolt for the cash drawer with the circuit closer for the alarm in 0 erat-ive connect-ion therewith. Fig. 3 is a diagram illustrating a modified arrangement of the electric cir- A is: the telephones instriunent which is and drawer C guarded by the lock D This lock,

as shown in Fig. 2, comprises aboltE which,

WILLIAM E. Diwm m .0mm: inmate:tin, or person-MIC IGAN, assrenons on,

ONE-FOURTH o WILLIAM n. sonTHwrcK AND onn-ronnrn To'nannY room, I

spec'ificationof Letters Batent. Sept. -5,1911 .1

when projected, extends adjacent to a flange forms a keeper for the bolt and prevents the opening of the drawer. i Adjacentto the bolt E is arranged a. ciron theinside of'the cash box which flange cuit closer Gr. This preferablyconsis'ts of a which isoperated by the bolt E through the closing or opening of an electric, circuit. "I preferably employ a .doubleguard' circuit normally closed. Thus, as shown,.the 11lovable contact His held when the bolt E is closes one electriccircu-it, while in the same position the movable contact His separated from asecond cooperating contact H 'Thus the withdrawal of the bolt E will cause the sounding of the alarm through the other will still be .efiective.

chanical :connection between the. instrument and the line. lVith' such a construction the circuit inoperative, will nevertheless sound the alarm by the opening of the normally closed circuit. As illustrated, the normally closed circuit K includes a relay or electromagnetically controlled circuit closer L which controls a local circuit M, including the battery N and alarm bell O. The normally open circuit P also controls an alarm bell and, as indicated, the same bell 0 1s device cannot become inoperative through the failure of either of the batteries N or Q, as in the former case the relay L willbe operated. to close the circuit M, which whereby a second electric circuit is opened- As illustrated in Fig. 1, thetelephone strument is providedwith a cord connection J, which forms both the electrical and me plurality of cooperating contacts l-L'one'of I y medium of an insulator pin or block I. The arrangement issuch that; the retractingof. the bolt will cause the circu t closer tose't in operation the alarmeither throughthe under the control of the circuit closer G, one circuit being normally open and the other I projected against the contact ,H' ;which agencyof either or both of these electric circuits, and if one is rendered inoperativethe .90 conductors of the alarm circuit are. also passed through the cord J. Thus thesever ing of this cord J, while rendering thegopen,

will operate the bell O, and in the latter case this bell will be operated by the closing of the circuit P from the battery Q.

" it is obvious that the alarm may also be ap-. 'plied' to instruments secured in fixed positions, and that with either construction the Although wehave illustrated an instru- 'IH'EIIH-H-WhiCh the electric and mechanical connections are formed through the cord J,

alarm will be sounded both upon the tampering with the drawer and by the severing of the electric connections. Moreover, in each case, the electric conductors of the alarm circuit may be indistinguishably. associated with the regular electric connections for the telephone instrument so that it is impossible to prevent-the sounding of the alarm by first cutting or-otherwise rendering the alarmcircuit inoperative. This is particularly true in cases where the cord connection, the several conductors of the telephone and alarm circuits are so inter- .said instrument having its circuit indis- 'tmguishably .nections of .said instrument.

twined as to be indistinguishable.

In Fig. 3 a modified arrangement of the electric circuits is illustrated, in which Q is' a battery for the normally open circuit P and Q is a battery forthe normally closed circuit K. The bell O is permanently connected into the circuit K, but the contacts H and H close a shunt in this circuit whenw ever thebolt E is projected thereby prevent-i ing the operation of the bell OR When this shunt is open the bell 0 will be set in operation and at the same time the closingof'the circuit P will set into operation a second bell O.

' .What we claim as our invention is:

A -1, The combination with a telephone instrument and a flexible cord for mechanically and electrically connecting said instrument to its station, of an electric alarm having a portioniof its circuit passing through said cord'and operated upon the severance o1"- detachment of said cord.

'2. The combination with a telephone instrument, of anelectric alarm for guarding associated with the electric con- I 3. The combination with a telephone instrument and a flexible cord for mechanically and electrically connecting said instru:

ment to its station, of a cash box for said instrument, a lock for said cash box, an electric alarm operatively connected to said .lock having a portion of its circuit passing through sald cord, and means for operating said alarm upon the unlocking of said lock or the severance of the'cord. Y

4. The combination with a telephone instrument and a flexible cord for mechanically and electrically connecting said instrument to its station, of a cash box for said instrument, a lock for said box, an arm connecting the cash box to the instrument, an electric alarm operatively connected to said lock, having a portion of its circuit passing through the cord and said arm, and

means for operating the alarm upon the un-,

locking of the lock or the severance of the cord.

5. The combination with a telephone instrument and its electrical connections, of a cash box connected to said instrument, a lock for said box, an alarm operatively connected with said lock having its circuit indistinguishably associated with the electrical .connectionsof the instrument, and means for operating said alarm 'upon. the unlockin'gof said lock or the detachment "of said instrument.

6. The combination with. a telephone instrument. and a flexible cord forming the mechanical and electrical connections between the instrument and its station, of an electric alarm having a portion of its cir- =cuit passing through, said cord whereby

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