US1056683A - Electric safety-lantern. - Google Patents

Description

H. C. HUBBELL.

ELECTRIC SAFETY LANTERN. APPLIGATION FILED PBB.10,1910.

1,056,688. 'A l APatented1ulfir.18,1913.

INVENTOR extinguished, or burns out, another incanmam? o. Homann., or NEWARK, NEW JERSEY.

ELECTRIC SAFETY-LANTERN.

Losanna.

Spetzication of Letters Patent.

Patented Mar.`18,v191`3.

Apparition mea February 16, 1910. semi No. 54am'.

To all 'io/'wm t may concern.'

4 Be it known that I, HARRY C. HUBBELL, aA citizen of the United States, residing at Newark, in the county of Essex and State et New Jersey, have invented certain new and useful improvements in Elect-ric Safety- Lanterns, of which the following is a specitication. f

rihis invention relates to incandescent electric lights and has especial reference to their use with electric safety lanterns for mines, gas houses, etc.

The object of the invention is to provide -an electric safety lantern having means i5` bulb is accidentally struck it will be knocked whereby if an incandescent electric lamp trom its support,`indV the electric circuit broken thereby permitting the incandescent lioilagient to cool before the blow crushes the lll i .Vf

A further object of the invention is to provide an 'electric safety lantern having a number of incandescent 1am bulbs with means whereby if one of the llghts becomes descent lamp may be readily lighted.

In electrlc safety lanterns if the Yincandescent lamp bulb should be crushed by an accidental blow the incandescent filament .would be apt to ignite the gas-in a mine and thereby cause an explosion. It is the object of the invention to avoid this. So also it one of the lamps of an electric safety lan tern should burn out while the person carry-4 ing it was in the dark, he could not find his wl in the dark, as for instance in a mine, an L*therefore by meansvof this invention provision is made for partly relightinghthe lantern, so that the bearer may find his way out of the mine.

Referring to the accompanying drawing in which similar figures of reference indicate like parts, Figure 1 is a plan view of the incandescent lamp bulbs of a safety electric lantern mounted on their base, and a portion of a safety electric lantern showing the electric circuits connected with the lamps. Fig. 2 is a detail View showing. an incandescent lamp bulb dislodged from its support.

In carrying out the invention a pair of incandescent electric lamp bulbs 1 are mounted on a base 2, which consists of'a metal disk covered with some insulating material, such as porcelain, and adapted to be secured in the bulls eye ortion of an electric safety lantern. The b bs 1 are dtachably .'10 of the conducting wire. this construction, if the bulb is dislodged mounted in `sup-ports which will permit of their being dislodged from-their supports in case they accidentally receive a blow. As here shown they are preferably mounted on flexible arms 3, which in the present instance are the projecting insulated ends of the con ducting wires 45,44, and 5, 5, of two independent electric lighting circuits. T he bulbs 1 are detachably mounted on the arms 3, by having the contact projection 6 of the brass threaded cap 7 restmg in a contact metallic cap 8 mountedon the end of an arm 3, and the tip 9 of the bulb resting in a loop 10.0f the conducting wire at the end ofan arm 3. It will thus be seen that if a bulb 1 receives a blow its ends will be dislodged from their supports. In order to complete the electric c ir ciiit to the filament 11 of the lamp, a wire 12 extends down on the outside of the bulb, and

andv has its other end Wound around the tip 9 forming a contact for the contacting loop By means of from its support by a blow, the electric circuit will instantly be broken and the filament 11 .permitted to cool before'the bulb is shattered. One of the conducting wires 4 is connected with a battery 13, located in the electric safety lantern, and the other conductingl `wire 4 is connected with a contact 14 mounted on the portion 15 of an electric safety l lantern.

Mounted on the portion 15 of the lantern is al switch lever 16, which is connected by a wire 17 with the battery 13, and is adapted to contact with the contact 14. One of the conducting wires 5 is connected with one of the conducting wires 4, and thelother conducting wire 5, in which there is'a resistance 18 is connected with a contact 19 on the portion 15 of the lantern.

It will be seen that by means of the forev going arrangement of conducting wires, and

ductors 4, one of the lampsgthrough the other conductor 4, switch 16 and Wire 17 to battery 13. When the switch lever 16 is moved into contact with contact 19, an

electric circuit will be closed from battery 13 through one of the conductingY wires 14, 11o

wire 5, oneof the lamps, `wire 5, switch 16 and wire 17 to battery.-

It will begseen by the foregoing construction that the lamps areeach connected' with an. independent circuit, and that whenthe switch 16 is out of contact with the contacts 14 and 19 both circuits will be broken and neither lamp lighted. `When the switch is in contact with the contact 14 the first lamp will b e lighted with full candle power, and when the switch is/in contact with contact 16 the secondlamp, owing to the resistance 18, will Yonly give a subdued light, so that if the rst lamp burns out and the bearer. of the lantern is left in the dark, he has only to move the switch 16 in contact with contact 19 when the second lamp, which may be called the auxiliary lamp, will emit a subdued light suiicient to enable 1 the bearer of the lantern to find his way.

Having described the invention what I claim is 1, In an electric safety lantern, an incandescent lamp, flexible supporting' means for said lamp, said means consisting of the upi wardly projecting insulated ends of the circuit conducting wlres, each end having an electric contact formed thereon and flexibly and detachably holding the lamp in posibase, flexible supporting tion and permitting it to be knocked out of its support, and a conducting wire extending from a contact at one end of the lamp bu b over the outer surface of saidbulb, and its other end wound around the tip of the bulb and forming a contact with the upper end of one of said iexible supports.

2. In an electric safety lantern, a base, an incandescent lamp supported above said means for said lam said means comprls'ing the upwardly proJecting insulated ends of the circuit conducting wires, one of said ends having a cupshaped cont-act and the other end provided with a loop contact and flexibly and detachably holding the lamp in position, and a conducting wire extending from a ,contact at one end of the lamp bulb over the outer surface of said bulb, and its other end wound around the tip of the bulb and forming a contact with the looped upper end of one of the exible supports.

HARRY C. HUBBELL.

In presence of- CHAs. E. Rronnon, MAY M.

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