US2264952A - Alarm system for cash registers - Google Patents

Description

Dec. 2, 1941. D D. RANKIN 2,264,952

ALARM SYSTEM FOR CASH REGISTERS AND THE LIKE Filed Aug. 18, 1939 24 25 26 27 a! Q Q Q Q 28 & ,W

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Patented Dec. 2, 1941 ALARM SYSTEM FOR CASH REGISTERS AND THE LIKE Donald Drummond Rankin, Verdun, Montreal, Quebec, Canada Application August 18, 1939, Serial No. 290,881

1 Claim.

The invention relates to an alarm system for cash registers and the like, as described in the present specification and illustrated in the accompanying drawing that forms part of the same.

The invention consists essentially in the means for safeguarding paper currency against hold-up and thefts in general, as more particularly described in the claim for novelty following a description in detail of an acceptable form of the invention.

The objects of the invention are to furnish an alarm system that can be installed in cash registers, bank tellers inside counters and in numerous other places where paper currency is kept; to provide an alarm system that will eliminate holdups and prevent burglars from escaping with their loot, and generally to provide an alarm system that will be of a great value to banks, jewellery firms, and numerous other stores as well as to the public at large.

In the drawing, Figure 1 is a plan view of a stationary base of a cash register.

Figure 2 is a plan view of the currency drawer.

Figure 3 is a plan view of the bottom of the currency drawer.

Figure 4 is a plan view showing parts constituting the trap.

Figure 5 is an enlarged fragmentary sectional view showing the runners and the electric connections.

Figure 6 is an enlarged fragmentary sectional view shown in right angles to the view shown in Figure 5.

Like numerals of reference indicate corresponding parts in the various figures.

Referring to the drawing, the stationary base l5 has the copper runners l6 and H rigidly secured thereto, and the alarm bell lfl'is also shown on this base but may be situated in any suitable place. The wires l9 and 2|) lead from the runners Hi and ll respectively to the alarm system.

The currency drawer indicated by the numeral 2| has the runners 22 and 23 rigidly secured thereto, and it will be seen that these runners combined with the runners I6 and I1 will form a contact at all times during the opening and closing of the register drawer and yet never setting off the alarm until the certain bill or bills are removed. The store employees having access to the register being the only ones to know of the trap which is hereinafter described.

In Figure 2,

the different the register drawer is shown with 24, 25, 26, and 21, and

in one or more of these the trap is installed,

and this trap is made up from a thin wire 28, being fastened at one end by adhesive tape 29, or by any other suitable means, and at the other end of this wire, there is a fibre plate 3|! connected thereto, and this fibre plate extends in between the two plates constituting the switch 3|.

The lower metal plate 3| of the switch is attached to the upper surface of the currency drawer 2| by any simple standard method such as screwing or nailing, or any suitable alternative such as gluing into a cavity in the drawer, enclosing a light metal frame in the manner of a ticket slide or other similar means. It is to be understood that the plates 3| are only thickness so as to make the trap as inconspicuous as possible. The fibre plate 30 is also of very thin material for the same reason and may be tapered to facilitate easy withdrawal. When the fibre plate is withdrawn by means of wire 28 attached to lower note, the upper metal plate 3| falls on the lower plate by force of gravity which may be augmented by having attached a small spring as in a mouse trap, tending to close upper and lower plates upon withdrawal of the fibre pad 30.

Out of the number of bills, one of them is a paper currency bill without any value and this bill will be at the bottom and on its underside it will have a piece of adhesive tape or other means for connecting it to the thin wire 28, in other words, this bill will be trapped, and as soon as the bills are removed from the compartments, this valueless bill will be pulled upwardly with the other bills, and being connected to the thin wire, it will remove the fibre plate from the switch plates, which plates will then connect and close the circuit to the alarm system.

This device has been described just for one of the compartments, but it can be applied to each of the compartments in the cash register if desired, and it is understood that this device can be connected to any alarm system, such as for example, a system consisting of a transformer, dry cells, and one or more bells, and a cut-out switch, and the trap is of course concealed under the paper currency bill without value as described above, the bill being lifted just as easily as the other bills in the register, but it will automatically set off the alarm.

It is understood that numerous changes in the shape, size, and material may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

What I claim is: and adapted to come in contact with one another An alarm system for cash registers compristhrough gravity when the insulatingrplate has ing; a stationary base, a pair of electric conbeen removed, a wire secured to said insulating ductor plates secured to said base, a currency plate and extending therebeyond, a currency bill drawer movable above said stationary base, a 5 adapted to be connected with the free end of said pair of electric conductor plates secured to the wire, electrical connections between said conunderside of said drawer and adapted to come in ductor plates, and electrical connections from contact with said conductor plates of said base, said conductor plates to an alarm system; conductor plates secured within said drawer and having a movable insulating plate therebetween 10 DONALD DRUMMOND RANKIN.

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