US667585A

US667585A - Electric-arc lamp.

Info

Publication number: US667585A
Application number: US3228100A
Authority: US
Inventors: Albert Schweitzer
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-10-06
Filing date: 1900-10-06
Publication date: 1901-02-05
Anticipated expiration: 1918-02-05

Description

No. 667,585. I Patented Feb. 5, l90l. A. SCHWEITZER.

ELECTRIC ARC LAMP.

(Application filed Oct. 6, 1900.)

3 Sheets8heet I.

(No Model.)

ll-Illi 1 ill Patented Feb. 5, 190i.

A. SCHWEITZER.

ELECTRIC ARC LAMP.

(Application filed Oct. 6, 1900.)

3 Shaets--Sheet 3'.

(No Model.)

0mm wzrzns co. womuwow WASHINGTON, n, c

UNITED STATES PATENT OFFICE.

ALBERT SCHWEITZER, OF PITTSBURG, PENNSYLVANIA.

ELECTRIC-ARC LAM P.

SPECIFICATION forming part of Letters Patent No. 667,585, datedFebruary 5, 1901.

Application filed October 6, 1900. Serial No. 32,281. (No model.)

To all whom it may concern:

Be it known that I, ALBERT Sonwnrrzna, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Arc- Lamps, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and practically a continuous and steady light at all times.

The in vention still further aims to construct all parts in such a manner that they will antomatically operate and adjust themselves as the carbon is burned and provide for a continuous feed of the same.

Another object of the present invention is to construct a lamp of the above-described character that will be extremely simple in construction, strong, durable, highly efficient in its operation, and comparatively inexpensive to manufacture.

With the above and other objects in view the invention consists in the novel combination and arrangement of parts to be hereinafter more fully described, and specifically pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification,and wherein like numerals of reference indicate corresponding parts throughout the several views, in which- Figure 1 is a side elevation of my improved arc-lamp. Fig. 2 is a vertical sectional view thereof. Fig. 3 is a detail side elevation of the armature and its attachments. Fig. 4; is a similar view of the carbon-holder and carbon. Fig. 5 is a vertical sectional view of the enlarged portion of the inner casing. Fig. 6

is a top plan View of the same with the top removed therefrom. Fig. 7 is a side elevation of the bracket serving to retain the casing. Fig. 8 is a top plan view thereof. Fig. 9 is a plan view of the resistance-coil. Fig. 10 is an enlarged view of the locking device to retain the outer globe. Fig. 11 is a perspective view of a portion of the band secured to the outer globe. Fig. 12 is an enlarged vertical sectional view of the valve arranged in the plunger. Fig. 13 is a vertical sectional view showing the connections between the connectingrod and the tubular casing.

Referring to the drawings by reference-numerals, 1 indicates a hanger having upwardlyextending bifurcated ends 2, in which is mounted a pulley 3, the lower end of said hanger being interiorly screw-threaded, as shown at 4, to receive the interior tubular casing 5, which is exteriorly screw-threaded at its upper end, as shown at 6, to engage the interior screw-threads 4 of the hanger. The interior tubular casing 5 is screw-threaded at its lower extremity, as shown at 7, to receive the screw-threaded cap 8 of the enlarged portion of the interior casing 9, the latter being screw-threaded at its upper end, as shown at 10, and engages the screw-threaded cap. The said enlarged portion of the interior casing carries a bottom 11, in which are arranged posts 12 13. The bottom is further centrally provided with a boss l t, and to the interior wall of said casing is rigidly secured a bracket 15, carrying a rod 16, extending downwardly through the aperture 17in the bottom 11. At the end of said rod 16 is attached a lowercarbon holder 18, in which is arranged an opening 19 to receive the lower carbon 20. The carbon-holder is further provided with a set-screw 21 for the purpose of holding the carbon.

Rods 22 are pivotally secured at 23 to the lower extremity and outer walls of the enlarged portion of the interior casing. These rods are curved outwardly and extend vertically at their lower ends, as shown at 23'. The vertically-extending portion is screwthreaded, as shown at 24, to receive adjusting-nuts 25. The vertically-extending portions of the said rods are also encircled by spiral springs 26. has at its upperend apertured lugs 28, formed integral therewith, and which are adapted to The U-shaped hanger 27 receive the vertically-extending portion 23 of the rod. The spiral springs 26 bear against the under face of the said lugs. Acup-shaped portion 28 is arranged centrally in the U- shaped hanger 27 and is formed integral therewith, said cup-shaped portion being adapted to receive the lower end 29 of the globe 30. The upper end of said globe abuts against the under face of the bottom 11 of the enlarged portion of the interior casing.

The reference-numeral 31 indicates the solenoid-core, arranged in the interior airtight tubular casing 5, said solenoid-core carrying a metallic tube 32, having formed at its upper extremity an opening 33, and pivotally connected thereto is a rod 3%. In the upper end of this rod at are arranged a vertical air-passage 35 and air-ports 36, extending transversely thereto and communicating therewith, said rod being further provided at its upper end with screw-threads 37. The upper extremity of said rod is cup-shaped, as shown at 38, to receive a ball 39, forming a check-valve. A plunger 40, carrying interior screw-threads 4:1, is secured upon the end of the said rod and held in position on its under side by means of a nut 42 and on its upper face by means of a nut 43, the latter having centrally formed therein a recess 44:, communicating with the air-port 45.

The reference-numeral 46 indicates a carbon-holder which is slidably arranged in said tube 32, said carbon-holder being formed of a split collar 47 to receive the upper carbon 48. The said collar 47 carries at its upper extremity an outwardly-extending retractile spring 49 and a central upwardly-extending rod 50, the latter serving as a stop in limiting the upward movement of the carbonholder.

The reference-n umeral 51 represents a gravity-clutch secured to the lower end of the said tube 32, the latter being formed of an annular head 52, adapted to embrace the lower end of said tube 32 and carrying downwardlyextending apertured lugs 53, adapted to receive the bifurcated ends 54 of the arms 55, which are pivotally secured at 56 to said lugs These arms 55 carry U-shaped ends 57, which are adapted to clamp and frictionally engage the upper carbon.

The reference-numeral 58 represents a canopy arranged at the upper end of the interior tubular casing and forming a portion of the outer casing. 59 represents the outer casing carrying an inwardly extending annular flange 60 and a downwardly-extending portion 61, formed integral therewith, and having secured to its lower end a cap 62, to which is secured a contracted tubular portion 63, extending upwardly into the tubular portion 61. A shade-holder 64 is secured to the inner air-tight tubular casing, the latter having formed integral therewith a downwardlyextending annular flange 65. The outer face of said flange is provided with swiveled hooks 66, pivotally secured at 67 and carrying a hook portion 68. Slots 69 are arranged in said downwardly-extending flange 65.

The reference-numeral 70 indicates a split band, which is adapted to encircle the upper portion 71 of the outer globe 72, said split band being provided with an outwardly-extending flange 73, having formed therein an aperture 74 for the reception of an adjusting- Screw 75, extending through the said flange to the stud 76, the latter being rigidly secured to the split band and arranged in close proximity to the lug 73, said stud being provided with a head 77, forming a neck 78, being adapted to receive a chain or cord, the hook portion 68 of the hook 66 engaging the stud 76 and serving as fastening means for the outer globe.

The reference-numeral 79 represents a cylindrical casing carrying an outer layerof insulated material 80, to which are secured a series of resistance-coils 81. Formed integral with said cylindrical casing 79 at its upper portion is a spider 82. Arranged upon said spider is a spring 83, forming a contact-point. The bottom of said cylindrical casing is likewise formed in a spider 84 and is arranged upon the interior tubular casing 5. The reference-numeral 85 represents a switch encircling the said iuterior tubular casing and is arranged above the casing 79 and directly above the spider 82. A binding-post 86 is arranged upon the underneath face of the spider 82, and a binding-post 87 is arranged upon the upper face of the spider 8i, said bindingpost 86 extending upwardly through the canopy 58 and terminating in a binding-post. A corresponding binding-post 89 is arranged upon the opposite side of the canopy and extends downwardly, forming a contact-point 90, arranged upon the spider 82 and carrying a spring 83.

The reference-numeral 91 represents a solenoid arranged upon the interior tubular casing, said solenoid carrying at its upper extremity pins 92, to which is rigidly secured a spider 93, carrying spring-arms 94, adapted to engage the inwardly-extending annular flange 60 and serving to retain the outer casing in position. To the binding-post 87 is secured a wire 95, leading to the solenoid. From the lower end of said solenoid is secured a wire 96, extending downwardly through the contracted tubular portion 63 to the screwthreaded plug 97, secured in the boss 98 and extending into the bracket 15.

The reference-numeral 99 indicates a wire secured to the annular head 52 and connected at 100 to the post 13.

The operation of my improved arc-lamp is as follows: \Ve will assume that the wire of the positive current is attached to the bindingpost 89 and that of the negative to the binding-post 88 and that the switch is operated so as to form a contact with the contact-point and complete the electrical circuit by grounding the same through the interior casing of the lamp and creating an are between the carbons, the negative current passing from the lower carbon to the carbon-holder through the wire 96 into the solenoid and through the resistance-coils into the binding-post 88 to the dynamo.

Having thus fully described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an arc-lamp, the combination of an interior air-tight casing, a plunger arranged in said casing and provided with air-passages, means for controlling said air-passages, an upper-carbon holder arranged in said casing and having contact-springs at its upper end, a gravity-clutch for engagement with the upper carbon, a lower-carbon holder, swinging rods carrying a bracket for supporting the globe, a solenoid, and an insulated casing arranged above the solenoid, substantially as described and shown.

2. In an arc-lamp, the combination of an interior air-tight casing, an insulated casing attached thereto, resistance-coils carried by said insulated casing, a solenoid carried by the interior casing, an armature, a plunger provided with air-pa'ssages,a check-valve con trolling said passages, a slidable upper-carbon holdera gravity-clutch for engagement with the upper carbon,a lower-carbon holder,a globe, and means for forming an air-tight seal with the globe, substantially as described.

3. In an arc-lamp, the combination of an interior air-tight tubular casing, a cylindrical casing attached thereto, a layer of insulated material surrounding said cylindrical casing, resistance-coils surrounding said insulated material, a magnet arranged upon said interior tubular casing, an armature arranged in said interior tubular casing carrying a tubular casing, a plunger arranged in said tubular casing having air-passages arranged therein, a check-valve controlling said air-passages, an upper-carbon holder slidably arranged in said casing, a gravity-clutch arranged at the lower end of said casing engaging the carbons, a lower-carbon holder, a globe, and means of retaining said globe air-tight.

at. In an arc-lamp, the combination of an interior tubular air-tight casing, a plunger arranged in said interior tubular casing having formed therein air-passages, a check-valve controlling said air-passages,said plungerconnected to a tubular casing and an armature, a carbon-holder arranged in said tubular casing, contact-springs arranged at the upper end of said carbon-holder to engage the inner sides of said casing, a gravity-clutch arranged at the lower end of said tubular casing engaging the carbon, a lower-carbon holder carrying a carbon, and a globe, swinging rods, a U shaped bracket attached to said swinging rods, springs attached to the lower end of said swinging rods to retain the globe airtight, a solenoid surrounding a portion of said interior tubular casing, a cylindrical casing arranged on said interior tubular casing above said magnet, a layer of insulated material surrounding said cylindrical casing, re sistance-coils arranged around said insulated layer, and a switch, all parts being arranged and operating substantially as herein shown and described.

In testimony whereof I affix my signature in the presence of two witnesses.

ALBERT SOHWEITZER. Witnesses:

JOHN N OLAND, H. O. EVERT.