US1193894A

US1193894A - Electric lamp

Info

Publication number: US1193894A
Authority: US
Publication date: 1916-08-08
Anticipated expiration: 1933-08-08

Description

W. A. HARVEY.

ELECTRIC LAMP.

APPLxcATloN FILED APR.19..1915.

Patented Aug. 8, 1916.

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A, Harvey,

W. A. HARVEY.

ELECTRIC LAMP. v

APPLICATION FILED APR.19,1915.

1,193,894. PatentedAug. 8,1916.

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STATES ,PATENT FFllCE.

WILLIAM A. HARVEY, OF SCRANTON, PENNSYLVANIA.

ELECTRIC LAMP.

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To all whom it may concern:

Be it known that l, WILLIAM A. HARVEY,

a citizen of the United States, residing at Scranton, in the county of Lackawanna and State of Pennsylvania, have invented certain new and useful Improvements in Electric Lamps, of which the following is a specification.

This invention, while adapted for embodiment in electric lamps for general uses, is particularly appropriate for small reading lamps designed to illuminate a comparatively restricted area, such as the surface of a book, or illuminating a comparatively larger area where a brilliant light is not required.

The invention has fo-r its object to provide a lamp structure that will be simple and cheap to make and assemble, and to these ends, the invention consists in novel features of construction hereinafter fully described and particularly pointed out in the claims, reference being had to the accompanying drawings, in which- Figure 1 is a perspective. view illustrating one use for which the lam is peculiarly adapted. Fig. 2 is an elevation of the lamp in the same relation asdshown in Fig. l, and with the lamp proper in section to disclose the internal construction. Fig. 3 is a sectional view of a lamp of somewhat modified construction. Fig. 1 is a view similar to Fig. 3, showing a further modication of the internal construction of the lamp. Fig. 5 is an elevation showing another method -of hanging the lamp. Fig. 6 is a detail view o f a book clamp with which the lamp is preferably provided. Fig. 7 is a detail view of parts shown in Fig. 6, but viewed in directions at right angles to Fig. 6. Fig. 8 is a schematic view, suggesting Athe use of the lamp with current derived through the medium of an induction device, which adapts it to be `introduced in anv ordinary houselighting system,` and Fig. 9 is a detail view of the electrical fittings incident to mounting the lamp upon its support lwithin the housing.

The lamp is preferably constructed of a housing 1,v a coupling 2 and a hanger 3, which latter is preferably adapted to be supported'by an arm 4, which forms a conduit forthe lamp circuit wires 5, and which is in turn supported on the bracket 6.

The interior construction of the lamp em- Specication of Letters Patent.

Patented aug. s, raie.

Application filed April 19, 1915. Serial No. 22,462.

bodies anattaching shank 7 threaded into the coupling 2 and carrying a shoulder bar 8, which is adapted to seat against the annular shoulder 9 on the housing l, whoserupper end seats against the coupling 2, so that when'the shank 7 is screwed into the coupling 2, the shell is held firmly on the latter and steadied in position by the bar 8. rllhe essential characteristics of the parts 7 and 8 are to provide a means of attachment to the 65 coupling 2 and to provide an enlargement that will engage the shellV and firmly clamp it against said coupling.

Spaced from the bar 8, is an insulation bar l0 connected thereto through bolts 11 7o and with intervening spacing members 12 g' the spacing members in the form shown in Fig. 2 being insulated sleeves around the bolts, and said bolts extending through both bars. Secured to the bar 10, is the socket 13 75 adapted to receive the lamp bulb; said socket being constructed with the usual conductive threaded lining forming one terminal .of the electric circuit, and a central button forming the other terminal so as to complete the circuit through the electric bulb when screwed into place.

14 represents a ,reflector which is seated at l5 upon the shell (in the construction of Fig. 2, upon the lower edge of the shell), and this reflector is seated upon the socket 13, which provides a shoulder therefor in such manner that when the shank 7 is screwed into the coupling 2, and the bar 8 which in effect forms a shoulder on said shank is seated against the shoulder 9, the

`reflector will be drawn against its seat 15,

pling, the Jinterior fittings ofthe lamp may be removed from the housing and exposed to view. Y

. The coupling 2. fits the nipple 16 on the hanger 3, or is otherwise.suitably-connected 100 to the hanger. s

To fix the reflector 14: relatively to the socket 13, independently of the bearing of the reflector upon the seat 15, the screws 17 l. which pass through the insulated bar 10are 105 made to impinge upon a clamping disk 18, which rests upon the apex of the reiiector p immediately over the shoulder provided by the socket 13, and this socket'13'is preferably made in the `form of an insulated sleeve,

the thread for receiving the lamp being provided by a threaded thlmble 19, whose closed upper end receives the button that provides ing the insulating sleeve- 13 from the threaded thimble 19 of the socket and taking ofi' the reflector and the clamping disk with it. l

According to Fig. 3, the housing is in the form of'a bell-shaped dome la, but the parts are constructed similarly to those of Fig. 2, except that the refiector is of conical shape,

as shown at 14a (Fig. 3), instead of spheroidal, as in Fig. 2,` and the clamping disk 18 which holds the apex of the reflector upon the sleeve 13, abuts'directly against the ci'rcuit plate 22. The reflector, however, still has its bearing against the housing, which .in this instance is 'provided by the seat 15a.

According to Fig. 4, which shows a somewhat modified design of bell dome or casing 1", the shoulder'afforded by-the bar 8 in Figs. 2 and 3 now becomes a nut 8, which seats against the casing, but immediately opposite the bearing which the casing has against the coupling 2, the casing being thereby clamped in position and the interior mountings being held within the casing; -also the spacing members for the bar l0a now be-V come a pair of metal legs 12a which are united to the bar 10a by short screws 11'. The lamp socket 13 and the parts immediately associated ytherewith correspond to those of Fig.v 3, the'reliector being in the form of a cone and finding its seat upon the casing at 15a, just as in Fig. 3.v

If desired, the hanger 3 which supports the llamp fitting upon the bracket 4, may give place to a hanger 3, as in Fig. 5, which is .adapted to be received by the bracket 4a where -it is desired to locate the lamp with- 'out particular regard to the brightness of the illumination, or localizing 1t upon an object such as a book. This hanger 3a or ring is connected with the casing 1b by means of the coupling pendant 2a, which'is functionally identical with the coupling 2, so far as concerns the housing and the parts within it. l

The clamp 6 is of known construction, so far as concerns its clamping jaws, the means for drawing them together upon a thin object, such as a book cover, and the means for angularly adjusting the arm 4; but according to the present invention, an alining yoke 6a is mounted upon the upper jaw and made to extend considerably on either side thereof, and thence downwardly to form an abutment for the straight edge of the object toA whose primary w1nding`23b is in the cord or other circuit 24, .which includes the plug 24a adapted to enter a lamp socket in any existing system using alternating current. The inductance 23 ishsuch that it will stepdown the current to a voltage safely within the capacity of the lamp ,and its fittings, and thus make it'practicable to use a very small lamp for' the sake of economy in current consumption, as well as cost of equipment, and convenience in mounting and supporting the lamp in position to localize its `radiation. But ordinarily the lamp circuit 5 will be connected to a portable battery of suitable capacity. I have found in practice that a battery of several dry cells, such as can be readily purchased in open market, will'give results that are satisfactory b'oth as to illumination and economy of consumption when used in connection with the lamp herein described.

1. In a lamp, the combination of a housing, a' reflector seating against `said housing,

a socket member protruding through said-v reflector and lhaving a shoulder through which it engages the refiector in the direc-- tion to hold it against its seat upon .the housing, a supporting bar carrying the socket member in position to clamp the reflector between the shoulder and said supporting bar, and means for holding the bar within the housing with the reiector seated against the housing. v

2. In a lamp, the combination of a hous-vv ing, a reflector seating against said vhousing,

a socket member protruding' through said reflector and having a shoulder through which it engages the reflector in thedirection to hold it against its seat upon the housing, a supporting bar carrying the socket y member in position to clamp the reflector between the shoulder and said vsupporting bar, and means for holding the`ba-r withinthe housing with the reflector seated against the housing, comprising a shank connected with the 'supporting bar, and a couplingv member outside the housing, receiving the shank; the housing being drawn v"against said coupling through means of said shank.-

3. In a lamp, the combinationA of a housing, a socket member adapted to receive a shoulder thereon, a reflector seated against suitable illuminating device and havin a' the housing and also against said shoulder, means for drawing. the socket endvvise into the housing, and thereby fixing the reflector in position; said means comprising a bar With which the socket member is connected,

and the housing being provided With a seat i against which the bar rests when the reflector is seated, a shank projecting from said bar, in the direction to draw the bar and reflector to their seats, and a coupling outside the housing, receiving and holding the shank, and seated against the housing when the bar and reflector are seated.

4. In a lamp, the combination of a coupling, a housing seated against said coupling, an attaching shank fitted to said coupling and provided With a shoulder-forming member through which it is seated aga-inst the housing, and adapted to draw the housing to its seat against the coupling, a reflector seated against the housing, and ha socket member seated against the reflector and connected with the shank and held by the shank in position to hold the reflector to its seat upon the housing. v

5. In a lamp, the combination of a coupling, a housing seated against said coupling, an attaching shank fitted to said coua pling and provided With a shoulder-forming member through which it is seated against the housing, and adapted to draw the housing to its seat against the coupling, a reflector seated against the housing, and a socket member seated-against the reflector and connected 'With the shank and held by the shank in position to hold the reflector to its seat upon the housing; said shank being adjustable in the coupling for tightening its seating agai-nst`the housing and theseating of the housing against the coupling.

.6. In a lamp, the combination of a coupling, a housing'seated against said coumember through which it is seated against the housing, and adapted to draw the housv ing to its seat against the coupling, a reflector seated against the housing, and a socket member seated against the reflector and` connected with the shank and held by the shank in position to hold the reflector to its Aseat upon the housing; said socket member being adjustable relatively to the shank for tightening its seating against the relector and. the seating of the reflector ,j against the housing.

7. In alamp, the combination of a cou- A pling, a vhousing seated against said coupling, anattaching shank fittedto said coupling and provided with a shoulder-forming member through which it is seated against the housing, and adapted to draw-the housing to its seat against the coupling, a re-v flector seated against the housing, and a socketmember seated against the reflector and connected with the shank and held by the, shank in position to hold the reflector to its seat upon the housing; said shank being adjustable in the coupling for tightening its seating against the housing and the seating of Ithe housing -against the coupling; said socket member being adjustable relatively to the shank for tightening its seating against the reflector and the seating of the reectdr against the housing.

8. In a lamp, the combination of a couplinga housing seated against said coupling, an attaching shank fitted to said coupling and provided with a shoulder-forming member through which it is seated against the housing, and adapted to draw the housing to its seat against the coupling, an insulating support mounted on the shoulderforming member of the shank and suitably spaced therefrom, a reflector seated against the housing, and a socket member seated against the reflector and connected-"With the shank, through the medium of said insulating support, and held by the shank in position to hold the reflector to its seat upon the housing.

9. In a lamp, the combination of a housing, a support Within said housing, an insulating mounting carried by said support, a lamp socket carried by saidmounting, av shoulder-forming member carried by and axially adjustable upon said socket, a reflector against which said shoulder-forming member seats, a clamping disk sustained by the insulating mounting and sustaining the reflector against said shoulder forming member, and a seat for the reflector on the housing. y

l0. In a lamp, the combination of a housing, a support Within said housing, an insulating mounting carried by said support,

la lamp socket carried by saidmountmg, a

member seats, a clamping disk sustained by.

the insulating mounting and sustaining the reflector against said shoulder forming member, and a seat for the reflector on the housing; said mounting member having means for drawing it axially into the housing and thereby drawing the reflector to its seat upon the housing.

l1. In a lamp, the combination of a housing, a support Within said housing, an insulating mounting carried by said support, a lamp socket carried by said mounting, av shoulder-forming member carried by and axially adjustable upon said socket, a reflector against Which said shoulder-forming member seats, a clamping disk lying against said reflector, screwsmounted in and protruding beyond the insulating member, providing means through Which the clamping disk is sustained by the insulating mounting v 5 ing, fittings within said housing, an attach.-

ing shank connected with" said ttings and l'seated against the housing, a coupling re-` ceiving aid shank and providing a seating -forthe-V ousing and against which the hous- 10 ing ishe ldrby the seatupon the shank, a

hanger receiving said coupling, and means I' for supporting. said hanger.

` 13'. Ina lamp, the combination of a housing, fittings Within said housing, an attach- 15 ing shank connectedl with said fittings and seated againstthe housing, a coupling receiving said shank and providing a. seating foi-'the housing and against which `the housingis held by the seat upon the shank, a

whanger receiving sla-idl coupling, and means `for supporting said hanger,`q'compr1sing a bracket arm, and means for supporting said bracket arm. I

14, I ni a,.1amp, the combination f a Su'p 25 ,porting bar '.havlng a. connecting member i -projeting rearwardlytherefrom, an insu; v

ating barl mounted upon and spaced from said supporting bar, a lamp socket secured to saiddnsulatmg bar, a reflector through sofwhichj said lamp socket protrudes having aA which said lamp socket protrudes havin a iange projecting towardthe lamp socket and in abutment with the insulating bar, and a clampingnut surrounding the lamp socket and gripping the reiiector H ange against the insulating bar.-

15. In a lamp, the'combination of a supyporting bar having a connecting member projecting rearwardly therefrom, an insulating bar mounted upon and 'spaced'from said supportingbar, a lamp socket secured tosaid insulatlng bar, a reflector through iange projecting toward the lamp soc et and in abutment with the insulating bar,

anda clamping nut 'surrounding the lamp socket and gripping the reflector flange against. the insulatingv bar; said insulating s v bar having suitable conducting contacts in position to connect with the lamp socket .and with a lamp introduced therein, and

having a raised insulating portion through which it coacts with the nut in clamping the reflector.

The foregoing specification signed at Scranton, Pennsylvania, thistwenty ninth day of March, 1915. .v v

-WILLIAM A, HARVEY. In presence 4of two Witnesses-|- JAMESy vMoni,

P. S. BROWNING.