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Publication numberUS3125300 A
Publication typeGrant
Publication dateMar 17, 1964
Filing dateJan 4, 1962
Publication numberUS 3125300 A, US 3125300A, US-A-3125300, US3125300 A, US3125300A
InventorsT. F. Roche
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 3125300 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

T. F. ROCHE SAFETY LANTERN March 17, 1964 3 Sheets-Sheet 1 Filed Jan. 4, 1962 u: I G 2 INVENTOR.


March 17, 1964 1-. F. ROCHE 3 Sheets-Sheet 2 IN VEN TOR THOMAS F. ROCHE ATTORNEY March 17, 1964 r. F. ROCHE .SAFETY LANTERN 5 Sheets-Sheet 3 Filed Jan. 4, 1962 Ill II IG.4


United States Patent 3,125,300 SAFETY LANTERN v Thomas F. Roche, Rte. 110, 21 W. Main St., Merrimac, Mass. Filed Jan. 4, 1962, Ser. No. 164,277 2 Claims. (Cl. 24037.1)

This invention relates to a safety lantern. In particular it relates to such a lantern which is water and shock resistant and can provide automatic battery-operated illumination upon failure of normal electric supply.

Although automatic battery-operated emergency lanterns have been described in the past, these have generally been subject to a number of disadvantages which have limited their usefulness. Thus, for example, such previously described emergency lanterns are put out of operation by the heat of a fire or by the water of a flood or firemans hose or by the impact of falling timbers and the like. To my knowledge, no emergency lantern has hitherto been proposed which is adequately resistant to the effects of high temperature, water or impact so as to have continuing usefulness during an emergency such as a fire, flood, hurricane or storm. In addition, many such prior emergency lanterns have proved to be inoperable after having been installed because of corrosion and microbial attack.

One object of this invention is to provide an emergency lantern which is resistant to the action of heat or water and has great shock resistance.

Further objects and advantages of this invention will be apparent from the following specification and claims and from the appended drawings in which:

FIGURE 1 is a front view of one embodiment of this invention.

FIGURE 2 is a side elevation.

FIGURE 3 is an exploded view looking into the rear and upper sections.

FIGURE 4 is an interior view section.

FIGURE 5 is a side elevation of FIGURE 4 with screws removed.

The invention comprises in a general sense a plastic casing having detachable front and rear sections and a detachable top section. The front section holds the lamp which is also detachable. The rear section contains the batteries and circuit contacts for the lamps. The top section contains the relay switch for actuating the battery circuit and also the lead to the normal supply of electric current. Each of these sections, namely, the front, rear and top sections is preferably molded from a relatively impact-resistant thermoset plastic such as phenolic resin or alkyd resin. Both the front and rear sections have transverse channels at each corner in which gasketed corrosion-resistant bolts are threadable to engage the front and rear sections in fixed attachment. Channels are likewise provided in the top section for corrosion-resistant bolts to attach to the top of the rear section. Resilient gaskets having registering holes are provided between the front and rear sections and between the top and rear sections. The front section has a large central opening to accommodate the lamp, preferably of the sealed-beam type, which is held in position by a detachable rear collar and a gasket. The relay switch and associated circuitry are selected so that the switch forms part of the battery circuit and is held normally open by current from the regular electric service. The switch closes when the electric service is interrupted, thus actuating the battery circuit to the lamp. The molded casing preferably has pockets to accommodate the batteries that are used so that there is no looseness of fit.

of the rear of the front drawings, the lantern 10 comprises a front housing section 11 and a rear housing section 20. These two sections are connected to one another by gasketed screws. 11a, 1 1b, 11c and 11d which go through registering channels 111, 112, 113 and 114 in the front section in conjunction with channels 26a, 26b, 26c and 26d in the rear section. A resilient sealing gasket 12 is provided between the front and rear section. The lamp 16 is of the sealed-beam type and is held against the edge of front opening 19 in the front section by a detachable lamp-holding collar 15 and a gasket 14. The collar 15 is attached to the front section by screws 15a, 15b, 15c and 15d. The lamp terminals are designated as numerals 16 and 17. The front section has a marginal ridge 1-8.

The rear section 20 has an inner ridge 29, a vertical ridge 27, bottom ridges 27a and 27b and a top ridge 21. It is closed in the rear but open in the front. Mounted in the rear frame is a ground spring contact 22 and a positive spring contact 23 which are engageable with the lamp terminals 16 and 17. The positive spring contact 23 is electrically connected by wire 36 to a lower switch element 33a in relay 33 which in turn is connected through seal 35 to wire 34 in the top section 30. The negative spring contact 22 is conductively connected to a metal plate 24 which in turn provides contact with negative terminals 37a and 38a of batteries 37 and 38 which are shown in phantom form.

The positive sides 37b and 38b of the batteries are engageable with metal plate 25 which is mounted across the top opening 28 in the rear section. When current from wire 34 to the relay 3-3 is interrupted the spring on the relay switch element 33a causes the element to make contact with plate 25 so that the battery circuit is operative to light the lamp.

The top section 30 comprises a cap member which is attachable through a gasket 32 to the top ridge 21 of the rear section by means of edge screws 31a, 12, c, d, e and f.

I claim:

1. A safety lantern comprising in detachable assembly, a plastic casing having detachable front, rear and top sections; said front section and rear section having registering corner channel means, co-operable bolts for such channel means and gasket means between said sections; said top section being attachable to the top of said rear section by bolt and said gasket means; said front section having a rear opening and having a front opening against which a lamp is held by means including a gasket; said rear section having a front opening, a top opening, and space for insertion of a battery; said top section having a bottorn opening and containing a relay switch connectible to an external source of current; circuit means being provided in conjunction with said relay switch to provide current from a battery to said lamp when there is no current in said external lead.

2. A safety lantern comprising a plastic casing having detachable front, rear and top sections, bolts for attachment of said front and rear sections, a gasket between said front and rear sections, bolts for attachment of said top section to said rear section and a gasket between said rear and top sections; said front section having a rear opening, transverse channels at each corner, a front opening and a sealed-beam lamp held against said opening by a gasket and a rear collar attached to said front section; said detachable rear section having front and top openings, transverse channels at each corner which are registerable with the channels of said front section, a pocket for housing a battery, two lamp contacts, a first battery contact plate electrically connected to the first of said lamp contacts, and a second battery contact plate adjacent said Referring now to the 3 top opening; said top section being mounted over said top opening of said rear section and containing a relay switch including a lower switch element and a lead co-nnectible to a source of external current; a lead being provided from said second lamp contact to said lower switch 5 element so that lowering of said switch element to said second battery contact plate causes electrical connection between said second lbattery contact plate and said second lamp contact.

References Cited in the file of this patent UNITED STATES PATENTS Adams May 2, 1911 Grether Apr. 22, 1919 Embury Feb. 13, 1945 McDowell July 28, 1953 FOREIGN PATENTS France Dec. 12, 1947

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US991044 *Jun 18, 1910May 2, 1911Walter H AdamsReserve emergency-lantern.
US1301253 *Jul 9, 1917Apr 22, 1919William GretherPortable electric lantern.
US2369288 *Apr 19, 1943Feb 13, 1945Embury Mfg CompanyEmergency lighting unit
US2647204 *Jul 14, 1950Jul 28, 1953Pyle National CoTwin sealed-beam type headlight with alignable and removable lamp units
FR928994A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4156891 *Sep 27, 1976May 29, 1979Roche Thomas FExplosion-proof emergency light
US4414611 *Nov 15, 1982Nov 8, 1983Allison CorporationPortable light
US4535391 *Jul 20, 1984Aug 13, 1985Hsiao Meng ChangPortable emergency light
US4631649 *Oct 16, 1985Dec 23, 1986Chloride Systems, a division of Chloride Power Electronics, IncorporatedPlug-in emergency light fixture
US5379195 *Feb 19, 1993Jan 3, 1995Rms Lighting, Inc.Lighting fixture
US20070291477 *Jun 15, 2007Dec 20, 2007Ajit KhubaniPortable and mountable light bulb and fixture
U.S. Classification362/20
International ClassificationF21S9/02
Cooperative ClassificationF21S9/022
European ClassificationF21S9/02E