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Publication numberUS1037470 A
Publication typeGrant
Publication dateSep 3, 1912
Filing dateFeb 13, 1911
Priority dateFeb 13, 1911
Publication numberUS 1037470 A, US 1037470A, US-A-1037470, US1037470 A, US1037470A
InventorsMonroe Woodard Grindle
Original AssigneeMonroe Woodard Grindle
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Mail-box alarm.
US 1037470 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

rented certain new a diagrammatic sectional vieur MONRE .VODABI) GRINDLE, 03F


MAIL-Bex ALA Specification of Letters Yate-nt. Application, led February i3, 18.1.1.

Patented Sept. 3, 1912. semi no. stessi.

To all whom may concern:

Ble it known that I, MONROE wWoonaim GHINDLE, a citizzen of the United States, residing at Santa Rosa, Sonoma vand State of California, have inanol useful Improvements in Maildox Alarms, of which the following is n specification.

rlhis invention relates to new and useful improvements in mail box alarms.

The primary object of this invention is to provide an attachment for ordinaryl mail boxes, and Lspecially those used onrural routes, tor sounding an, 'alarm when e. letter, postal card or other inail matter is de posited in the box.

The invention consists in the novel features of construction, combination and sie rangement of parte ill ustreted in the draw4 ings and more particularly pointed out in the appended claim.

ln the accompanying drawings :MFigure l is a perspective View ot' a. rural mail box equipped with my attachment, and Fig. A of the attachnient.

Referring to the drawings for a more particular description oi the invention, l indiq Cates a meil box such es used on rural routes and 2 the alarm.. The alarm comprises the tilting bottoni 3, pivoted near one end npon the bearing rod l, passing throu h bearing lugs 5 on the hott-oni ot' the tilting bottom and projecting into oppffisite sides, as 6, ot the rectangular hox-lilre freine 7. The frame 'i' is placed in the bottom of the mail box, as shown in Fig. l of the drawings and is provided at one end with the inwardly projecting flange 8 engaged by and acting as a stop tor thefree end of the tilting bottom when in normal position. One end, as 9, of the tilting bottom, is provided on its bottom with the rectangular receptacle 1G to be lled or artially filled with shot ll, inserted throng i the opening l2.

In practice, enough shot is dropped into the receptacle l() through the opening l2 to vto exactly balance the tree end `that even e 1n the county of 'inventionwill between the side cause the pivote-d end of the tilting bottom i thereof, postal cai-d deposited in the inail box and telling on the tilting bottom will cause the .tree end of the letter to swing'down and sound thealnrin.

The alarm is sminded by the tree end of the tilting' bottoni engaging the Contact or post 13 which establishes the circuit through. the battery le, the feed and return wires l5 and 16, etc., and rings the bell 17.

From the foregoing description taken in connection with the drawings itis thought that the construction and advantages of this loe readily7 understood without requiring a more extended explanation.

Having described the invention, what claim as new is:

An alarm of class described comprising e .rectangular box like supporting .traine adopted to lit in the bottom et inail box, e tilting platform pivotally mounted in and pieces of the traine, an inwardly pr-.)jecting tlange at one end the traine forming a stop to limit the upward swinging movementof one end of the tilting platform, a transversely disposed ceptncle on the tiottoin o the opposite end of the tilting platform adapted to 'ce .filled withv shot or other motel-iai to cause both ends of the platform to evenly balance each other, an alarm, and Ineens tor completing the circuit to sound the alarm when the first mentioned end of the tilting platform is swung down by re: son ot a letter or other inail being deposited in the box, the opposite end ot the tilting platform having" en openH ing therein immediately over the receptacle through which the shot or other material is passed into the refi'optacle,

ln testimony whereof l allix my signature 1n presence of two witnesses.

MONROE WOODARD GRINDLE. 'Witnesses {leonor} Tiioiu?, NASH ENGLAND.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2469558 *Dec 15, 1945May 10, 1949Jaskala Louie CSignaling device for mailboxes
US3391792 *Nov 29, 1965Jul 9, 1968Marko MakarPhonograph record holder
US3656141 *Jan 23, 1970Apr 11, 1972Hill Frank CBird-scattering device
US5440294 *May 20, 1993Aug 8, 1995Mercier; Ellen L.Mail delivery signal system
U.S. Classification200/85.00R, 232/36, 340/569
Cooperative ClassificationH01H3/141