US1136404A

US1136404A - Headlight.

Info

Publication number: US1136404A
Application number: US70323412A
Authority: US
Inventors: Frank Buchanan
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-06-12
Filing date: 1912-06-12
Publication date: 1915-04-20
Anticipated expiration: 1932-04-20

Description

F. BUCHANAN.

. HEADLIGHT. APPLICATION FILED JUNE 12. I912.

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Patented Apr. 20, 1915.

F. BUCHANAN. HEADLIGHT. APPLICATION FILED JUNE 12, I9l2. 1,136,404. Patented Apr. 20, 1915.

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WITNESSES like characters FRANK,IBUGHANAN, OF SYRACUSE, NEW YORK.

HEADLIGHT.

Specification of Letters Patent. 7

Patented Apr. 20, 1915.

Application filed June 12, 1912. Serial No. 703,234.

To all whom it may concern Be it known that I, FRANK BUCHANAN, a citizen of the United States, and a resident of Syracuse, in the county of Onondaga and State of New York, have invented a certain new and useful Headlight, of which the following is a specification.

' This invention has for its object the production of a headlight having an incandescent electric lamp provided with a plurality of filaments arranged with their incandescing portions grouped together in order to increase the power of the lamp; and the invention consists in the combinations and constructions hereinafter set forth and claimed. I

In describing this invention reference is had to the accompanying drawings in which designate corresponding parts in all the views.

Figure 1 is a front elevation of a headlight embodying. my invention. Figs. 2 and 3 are vertical sectional views taken centrally of Fig. 1, the lamp in Fig. 3 being shown in one of its intermediate positions occupied when being placed in position or removed. Figs. 4 and 5 are fragmentary views illustrating the support for the upper fixture for the lamp, Fig. 4 showing such fixture and the support in side elevatlon, and Fig. 5 being a horizontal'sectional view through the support.

This headlight comprises, generally, opposing pairs of terminals, and an incandes cent electric lamp having pairs of oppositely disposed terminals for connection with the first-mentioned terminals, the lamp including filaments connected respectively to the pairs of terminals thereof and arranged with their incandescing coils closetogether. o

1 is the casing of the headlight, and 2 and 3 are opposing supports or fixtures suitably secured" within the casing, each fixture carrying a pair of terminals 4, 5.

6 is the incandescent electric lamp having a plurality of filaments 7, 8 here shown, as extending radially toward the center of the lamp and terminating in incandescing 0011s 9 located close together, each filament 7, 8

being connected to a pair of terminals associated with the lamp and designed to con-' tact respectively with-the terminals 4, 5 of the

fixture

2 or 3.

In the illustratedembodiment of my invention, the

fixtures

2, 3 are formed with sockets 10, in which the terminals 4, 5 thereof are located; and the lamp has two pairs of prongs or

terminals

11, 12 associated therewith, each

pair

11, 12 being designed to enter the sockets 10 of one of the

fixtures

2, 3 and contact with the terminals 4, 5 therein. Each pair of

prongs

11, 12 is here shown as carried by a socket 13 having central and screw threaded

terminals

14, 15 for engaging respectively with the central terminal 16 and the screw threaded plug terminal 17 provided on the lamp, the pairs of

terminals

16, 17 of the lamp being located diametrically opposite each other and being similarly threaded so that, after the sockets 13 are screwed in position on the plugs of the lamp, turning and hence loosening of the lamp is prevented. Each pair of prongs 11, '12 is connected in any suitable manner with the

terminals

14, 15 respectively of the corresponding socket 13.

The lamp 1s placed in position by a pivotal and axial movement, and one of the

fixtures

2, 3, here shown as the upper fixture, is pivoted on an axis extending crosswise of the axis of the lamp 6, and is also movable. lengthwise of such axis, and, as here shown the

fixtures

2, 3 are supported by

yokes

18, 19, and the yoke 18 supporting the upper fixture 2 is connected to a supporting bracket 20 by pivot pins 21 on the yoke which pins slide in vertical slots 22 1n the bracket 20. The axial movement of the upper fixture 13 is resisted by a coil sprmg 23 interposed between the intermedlate part of the yoke 18 and the bracket 20.

Owing tothe arrangement of the lamp filaments, their greatest incandescing por-.

could -not be focusedwith any accuracy so as to throw a beam of light strong enough for headlight and search light purposes, but

,by my arrangement of the filaments of the incandescent electric lamp relatively to, the focal axisof the lens or reflector, a hght with an incandescent lamp of power great enough for headlights, is produced.

My headlight is particularly 'advanta geous in that standard fixtures and parts are used, such as the

fixtures

2, 3, and the sockets 13, hence simplifying the manufacture of the lamp.

Iii operation, the sockets 13 are screwed v in position on theplugs of the lamp 6, and the

prongs

11, 12 of the upper socket inserted in the sockets 10 of the upper fixture 2 in contact with the terminals 4, 5 thereof, the fixture 2 havin been previously shifted into the position Smown in Fig. 3. The lamp is then pressed upwardly axially compressing the spring 23 until the

prongs

11,12 of the lower socket 13 are raised high enough to clear the upper face of the lower fixture 3. The lamp is then swung inwardly about the axis. of the

prongs

11 and 12 of the lower socket 13 are alined with the sockets 10 of the lower fixture 3. The lamp is then permitted to be shifted axially by the spring 23 causing the

prongs

11 and 12 of the lower socket 13 to contact the terminals 4, 5 of the lower fixture 3. Thus when .in position, the lamp cannot be turned loose by vibration.

What I claim is: V

1. A headlight comprising opposing fixtures, each having a pair of contact terminals, and an incandescent electric lamp having two pairs of terminals associated therewith for coacting with the first-mentioned terminals, one ofthe fixtures being pivoted on an axis extending transversely relatively to the axisof the lamp, substantially as and for the purpose set forth.

2. A headlight comprising opposing fixtures, each having a. pair of-contact terminals, and an incandescent electric lamp having two pairs of terminals associated therewith for coacting with the first-mentioned terminals, one of the fixtures being pivoted on. an axis "extending transversely relatively to the axis of the lamp, and being also shiftable axially forfacilitating placing and re moval of the lamp, and a spring for resisting the axial movement, substantially as and for the purpose described.

' 3. A headlight provided with opposing fixtures, each having a .pair of "sockets and terminals in' the sockets, and an incandescent.

, electric lamp provided with two pairs of projecting terminals or prongs for entering the sockets and engaging the terminals there- 1n, substantially as and for the purpose pins 21 until the.

fixtures, each having a pair of sockets and terminals 'in the sockets, an incandescent electric lamp provided with two pairs of projecting terminals or plugs for entering the sockets and engaging the terminals therein, one of the said fixtures being pivoted on an axis extending transversely of the axis of the lamp, and beingalso movable lengthwise of the latter axis, and a spring forresisting the lengthwise movement of said fixture, substantially as and for the purpose described. I

6. A headlight provided with opposing fixtures, each having a pair of sockets and terminals in the sockets, an incandescent electric lamp having two pairs of terminals,

each pair consisting of a central terminal so and screw threaded plug, a plug socket turning on each of the plugs'and having a pair of projecting terminals or prongs for entering the sockets of the corresponding fixture and engaging the terminals thereof, substantially as and for the purpose specified.

7. A headlight provided with opposing fixtures, each having a pair of sockets and terminals in the sockets, an incandescent electric lamp having two pairs of terminals,

each pair consisting of a central terminal and screw threaded plug, a plug socket turning on each of the plugs and having-a pair of projecting terminals or prongs for entering the sockets of the corresponding fixture and engaging the terminals thereof, one of the fixtures being pivoted on an axis extending transversely of the axis of the lamp, and

also being shiftable axially of the latter axis,

substantially as and for the purpose set10c forth.

8. A headlight provided with opposing fixtures, each having a pair of sockets and terminals in the sockets, an incandescent electric lamp having two pairs of terminals, .each pair consisting of a central terminal and a screw threaded plug, a plug socket turning on each of the plugs and having a pair of projecting terminals or prongs for entering the sockets of the corresponding 11( fixture and engaging the terminals thereof, one of the fixtures being pivoted on an axis extending'transversely of the axis of the .lamp, and also being shiftable axially of the latter axis, and a spring for resisting the axial movement, substantially as and for the purpose described.

- .In testimony whereof, I have hereunto signed my name in the presence of two attesting witnesses, at Syracuse, in the county 12( of Onondaga, and State of New York, this 2d day of May, 1912.

FRANK BUCHANAN. Witnesses:

L. M. DAvIs, S. DAVIS.