US460019A - Electric show-case alarm - Google Patents

Electric show-case alarm Download PDF

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Publication number
US460019A
US460019A US460019DA US460019A US 460019 A US460019 A US 460019A US 460019D A US460019D A US 460019DA US 460019 A US460019 A US 460019A
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United States
Prior art keywords
tray
show
case
alarm
electric
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Expired - Lifetime
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
    • G07G1/00—Cash registers
    • G07G1/0018—Constructional details, e.g. of drawer, printing means, input means
    • G07G1/0027—Details of drawer or money-box
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/149—Mechanical actuation by lifting or attempted removal of hand-portable articles with electric, magnetic, capacitive switch actuation

Definitions

  • FIG. 1 is a perspective view showing a portion of the show-case with my improvement attached.
  • Fig. 2 is an enlarged longitudinal section of a portion of the tray.
  • Fig. 3 is an enlarged side elevation of one of the springclips for holdingjewelry.
  • Fig. 4 is an inverted plan view of the tray, and
  • Fig. 5 is a perspective view of a plug for holding the clips open.
  • the object of my invention is to provide a simple and effective electrical alarm for attachment to show-cases, for detecting the absence of an article from the tray of the showcase.
  • My invention consists in the combination, with the case provided with a number of metallic strips upon the floor thereof, of one or more trays provided with spring clips for holding articles, the said springclips being connected electrically in multiple arc and held open by the articles contained by the tray, the tray being furnished with contact-points bearing on the metallic strips on the floor of the show-case, and the metallic strips being in the circuit of a battery, in which is included an electric alarm-bell, all as will be hereinafter more fully described.
  • the show-case A is of the ordinary construction, except that its floor B is provided with a number of metallic strips a b, which alternate with each other, the strips a being connected with one pole of a battery 0, and the strips 1) being connected with the other pole of the battery through the electric bell D.
  • the tray E which is designed to contain the articles displayed in the show-case, is furnished with a number of spring-clips F, each formed of a pair of curved springs c 0, extending up wardly from the top of the tray and provided with contact-points d d and with rounded ends 6 e.
  • the springs c c are oppositely ar ranged with respect to each other, and their upper ends, as far down as the contact-points, are provided with a covering f of plush,
  • the top of the tray upon its under surface is provided at opposite ends with metallic strips G G.
  • the strip G is connected electrically with all of the springs c of the tray, and the strip G is connected electrically with all of the springs 0, thus connecting all the springs in multiple arc.
  • the clips F are all filled, the contactpoints (Z d are separated and prevented from touching, as shown in Fig. 2; but when an articleis removed from any one of the clips, the contact-points (Z (1 come together and close the electric circuit of the tray, so that when the tray is replaced in the case A and the studs g, projecting from the strips G G, touch the strips a Z), the circuit of the battery 0 will be closed and the bell B will give an alarm, showing that an article is absent from one of the clips.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Battery Mounting, Suspending (AREA)

Description

(No Model.)
B. O. KRUSOHKB. ELECTRIC SHOW CASE ALARM.
No. 460,019. Patented Sept. 22,1891.
Q- A A y WITNESSES: L m VENTOH:
BY Mm fig A TTORNEYS UNITED STATES PATENT OFFICE.
RUDOLPH O. KRUSCHKE, OF DULUTI I, MINNESOTA.
ELECTRIC SHOW-CASE ALARM.
SPECIFICATION forming part of Letters Patent No. 460,019, dated September 22, 1891.
Application filed December 1, 1890. $erial No. 373.107- (No model.)
T0 on whom, it may concern:
Be it known that I, RUDOLPH O. KRUSCHKE, of Duluth, in the county of St. Louis and State of Minnesota, have invented a new and Improved Electric Show-Case Alarm, of which the following is a specification, reference being had to the annexed drawings, forming a part thereof, in which Figure 1 is a perspective view showing a portion of the show-case with my improvement attached. Fig. 2 is an enlarged longitudinal section of a portion of the tray. Fig. 3 is an enlarged side elevation of one of the springclips for holdingjewelry. Fig. 4 is an inverted plan view of the tray, and Fig. 5 isa perspective view of a plug for holding the clips open.
Similar letters of reference indicate corresponding parts in all the views.
The object of my invention is to provide a simple and effective electrical alarm for attachment to show-cases, for detecting the absence of an article from the tray of the showcase.
My invention consists in the combination, with the case provided with a number of metallic strips upon the floor thereof, of one or more trays provided with spring clips for holding articles, the said springclips being connected electrically in multiple arc and held open by the articles contained by the tray, the tray being furnished with contact-points bearing on the metallic strips on the floor of the show-case, and the metallic strips being in the circuit of a battery, in which is included an electric alarm-bell, all as will be hereinafter more fully described.
The show-case A is of the ordinary construction, except that its floor B is provided with a number of metallic strips a b, which alternate with each other, the strips a being connected with one pole of a battery 0, and the strips 1) being connected with the other pole of the battery through the electric bell D. The tray E, which is designed to contain the articles displayed in the show-case, is furnished with a number of spring-clips F, each formed of a pair of curved springs c 0, extending up wardly from the top of the tray and provided with contact-points d d and with rounded ends 6 e. The springs c c are oppositely ar ranged with respect to each other, and their upper ends, as far down as the contact-points, are provided with a covering f of plush,
leather, or other insulating material. The top of the tray upon its under surface is provided at opposite ends with metallic strips G G. The strip G is connected electrically with all of the springs c of the tray, and the strip G is connected electrically with all of the springs 0, thus connecting all the springs in multiple arc.
XV hen the clips F are all filled, the contactpoints (Z d are separated and prevented from touching, as shown in Fig. 2; but when an articleis removed from any one of the clips, the contact-points (Z (1 come together and close the electric circuit of the tray, so that when the tray is replaced in the case A and the studs g, projecting from the strips G G, touch the strips a Z), the circuit of the battery 0 will be closed and the bell B will give an alarm, showing that an article is absent from one of the clips.
\Vhere the goods to be displayed are insufficient to entirely fill the tray, blocks II are inserted in the vacant clips, thus keeping the points d d out of contact.
Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, with a show-case tray,
of two similar spring clips oppositely arranged with respect to each other, and supports adapted to hold articles for display and constructed to form an electrical contact with each other when the articles are removed from the clips, substantially as specified.
2. The combination, with a show-case, of an electric alarm, a battery,and a removable tray provided with circuit closing devices adapted to be operated automatically when articles are removed from the tray, and electrical connections with the tray whereby the alarm is given when the tray is replaced in the show-case, substantially as specified.
The combination, with the show-case A and tray E, of the alarm-bell B, the metallic strips a b, the battery (1, the clips F, contained by the tray and adapted to hold articles for display, and the wires connecting the strips a b with the battery C,substantially as specified.
RUDOLPH KRUSOI'IKE.
Witnesses:
JosErH B. CoTroN, HOMER B. DIBELL.
US460019D Electric show-case alarm Expired - Lifetime US460019A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708747A (en) * 1953-05-01 1955-05-17 James M Moon Article removal signal means for filing drawer
US3668681A (en) * 1971-02-04 1972-06-06 Selwyn Kaplan Antitheft merchandise display system
US4155457A (en) * 1977-09-12 1979-05-22 DiOrio Enterprises, Inc. Anti-pilferage display case

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708747A (en) * 1953-05-01 1955-05-17 James M Moon Article removal signal means for filing drawer
US3668681A (en) * 1971-02-04 1972-06-06 Selwyn Kaplan Antitheft merchandise display system
US4155457A (en) * 1977-09-12 1979-05-22 DiOrio Enterprises, Inc. Anti-pilferage display case

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