US674642A

US674642A - Electric-arc lamp.

Info

Publication number: US674642A
Application number: US1239300A
Authority: US
Inventors: Royal E Ball
Original assignee: BALL ELECTRIC Co
Current assignee: BALL ELECTRIC Co
Priority date: 1900-04-11
Filing date: 1900-04-11
Publication date: 1901-05-21
Anticipated expiration: 1918-05-21

Description

No. 674,642. Patented lay 2|, 19m.

R. E. BALL. ELECTRIC ARQLAMP.

(Applicstion flied Apr. 11, 1900.; (No Iodel.) 4 Sheets-Sheet l.

WXTNESSES:

INVENTOR 35 ATTORNEYS "m: walls versus w. PMC7044110, wunmcn'on. 04 c,

Ptented May 2|, I90l.

4 Sheets-Sheet 2.

R. E. BALL.

ELECTRIC ABC LAMP.

(No Model. (Avrlmon med A 11 19 ATTORNEYS.

ER :0. mo 0.. WASMINGYON u r No. 674,642. Patented my 2|,1901.

n. 5. BALL. ELECTRIC ARC LAMP.

(Application filed. Apr. 11, 1900.) (No llodel.) 4 Sheets-Sheet 3.

rm: m m ca. mommna, wasnmu'rom o. c.

Patented May 2| l90l.

4Sheets-Shegt 4.

R. E. BALL. ELECTRIC ARC LIMP.

(Apphcltmn med Apr 11 1900 (No ludal.) I

WITNESSES:

W t 3 M f 4 on F u M H UNITED STATES PATENT OFFICE.

ROYAL E. BALL, OF'NEW YORK, N. Y., ASSIGNOR TO THE BALL ELECTRIC COMPANY, OF YONKERS, NEW YORK.

ELECTRIC-ARC LAM P.

SPECIFICATION forming part of Letters Patent N 0. 674,642, dated May 21, 1901.

Application filed April 11, 1900.

To aZZ whont it may concern.-

Be it known that I, ROYAL E. BALL, a citizen of the United States, residing at New York city, borough of Manhattan, county and State of New .York, have invented certain new and useful Improvements in Electric-Arc Lamps, of which the following is such a full,

clear, and exact description as will enable any one skilled in'the art to which it appertains to IO make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to improvements in severaldiiferentparts of an electric-arc lamp;

(5 and my improvements consist in the various novel and peculiar arrangements and combinations of the several parts of the apparatus, all as hereinafter fully-described and then pointed out in the claims. 7

I have illustrated types of my various inventions in the accompanying drawings, wherein g V Figure 1 is asection of myimproved lamp, the plane of the section being taken on a verzs tical plane extending centrally through the lamp, as indicated by line 1 1, Fig. 2. In this view a portion ofthe arc-inclosing globe is broken away, the telescoping casing is raised in open position, and the outer globe 0 and its holder are omitted. Fig. 2 is an enlarged horizontal section taken at a point just above the tilting frame of the feed-regulating mechanism. Fig. 3 is an enlarged vertical section of the lower guide for the upper carbon, together with a portion of the fixed plate in which the guide is mounted. Fig. 4 is an enlarged side view of the lower portion of the lamp with the vertically adjustable outer globe and its holder omitted. Fig. 5 is an enlarged vertical sectional view of the lower carbon, the inclosing globe, and the combined carbon-holder and globe-holder. Fig. 6 is an enlarged view of the combined arc-inclosingglobe holder and carbon-holder, the three 5 parts constituting this device being detached from each other. Figs. 7 and 8 are side views of my improved lamp, showing the verticallyadjustable globe with its holder in closed and in open position, respectively. In these two views the combined globe and lower-carbon holder is omitted. Fig. 9 is an enlarged plan Serial No. 12,393. (No model- View of one of the adjustable friction-clutches, shown as detached. Fig. 10 is a side view of a portion of the lamp-frame rod and one of the frictionclutches mounted thereon, the clutch being shown partly in vertical section. In this view the clutch shown in full lines indicates the closed position thereof, while the dotted line indicates the open position of the clutch. Referring to the drawings, in which like numbers of reference designate like parts throughout, 2 and 3 are the upper and lower 7 plates, respectively, of the lamp-frame, and 4 is a casing surrounding the plates, so as to inclose the feed-regulating mechanism for the carbon. I

5 is themain magnet.

' 6 is the shunt which controls the

verticallymovable core

7, and 8 is a tilting frame carrying the gearing of the feed-regulating mechanism, the tilting frame being pivoted at 9 and loosely connected at 10 to the core 7, so as to be actuated in the manner well known.

11 is the carbon-rod, the vertical movements ofwhich are controlled by the regulating mechanism, and 12 is the upper carbon carried by such rod.

A fixed tubular casing 13 depends from the under side of the lower plate 3, from which it is completely insulated by a layer of suitable material 14, such as asbestos. This fixed casing 13 has mounted within it a telescoping section 15, the lower end of which is flared outwardly and fits over an annular flange 16, formed upon the upper surface of the base-plate 17 of the lamp. This telescoping casing completely houses the part of the carbon-rod and the upper carbon which lies between the lower plate 3 and the base-plate 17. It also, when closed, serves to cover the lower guide and the surrounding parts, so that all such parts are protected against the weather and against the admission thereto of foreign matter. The upper part of the fixed portion of the telescoping casing 13 is provided with ventilating-openings 18 to permit the heated air which may enter the casing to escape, and thus be-prevented from reaching the working parts of the lamp, which are located above. When it is desired to gain access to the upper carbon to replace it or for any-other reason, the telescoping casing is raised into the full-line position shown in other guide, which indirectly acts upon the carbon-rod, is a peculiar form of device which cooperates with the upper carbon, as will now be described.

The base-plate'17 of the lamp is formed with a centrally-located

circular opening

23, and 24 is a fixed bracket depending from the under side of the base-plate 17, from which it is insulated by a layer of asbestos 25. This bracket 24 is designed to carry the lower-carbon holder and the inner globe 26 which incloses the arc. The upper part of the bracket 24 is formed with a circular opening 27, the walls of which opening'are straight or vertical, as shown more particularly in the enlarged view in Fig. 3. The lower guide, which takes within the opening 27, is composed of a com paratively thick and heavy disk 28, having a cylindrical central opening 29 of a diameter considerably larger than the diameter ofthe carbon l2,which passes through it. This disk 28, which I prefer to make of soapstone, has its periphery 30formed like the section of a sphere, and its diameter is such that it fits nicely within the cylindrical opening 27 of the fixed piece 24. (See Fig. This disk 28, in addition to providing a guide for the upper carbon, serves as a cap for the upperend of the inner globe 26, and its weight keeps it seated firmly on the globe. If the upper end of the inner globe should not be perfectly level, the

disk 28 readily accommodates itself to the inclination by reason of its rounded periphery 30, which permits the disk to'tilt readily in any direction out of the horizontal.

plate overhangs the edges of the disk and will rest upon the fixed piece 24 when the disk is not supported from below by the inner globe. This retaining-plate 31 is formed with a central opening 32 considerably larger than the diameter of the carbon passing through it, and it is secured to the disk by a set of screws 33, which pass through the body of the disk and take into an annular plate 34 on the under side thereof to secure the screws in place. This annular plate 34 is made of a diameter slightly smaller than the inner diameter of the inner globe26, so that it fits-within the mouth of the globe, as shown in Fig. 1.

'terial fits snugly around thecarbon and serves as a guide therefor. In the present construction I place this guide 35, which is a piece of asbestos, between the retaining-plate 3 1 and the upper face of the disk 28, so that it is clamped firmly in place. By virtue of having the flexible guide 35, which fits snugly around the carbon, of a smaller diameter than the opening 29 in the disk either the disk can be tilted out of the horizontal without disturbing the vertical position of the carbon or the carbon itself can swing or move laterally without being'obstructed by the disk, as under'such movement the soft material of the guide 35 will readily yield, This asbestos guide 35 acts also as a seal for preventing the heat from the are reaching the upper'part of the lamp, which is an advantage, because in many lamps the heat fromthe arc has such directaccess to the working parts thereof as to impair the same. The fixed bracket 24, depending from the base-plate 17, extends downwardly a considerable distance and at its lower end is formed with a horizontal arm ally and into which projects a set-screw 38. (See Figs. l and 4.) This socket in the bracket'is designed to receive my improved combined carbon and globe holder-,which comprises a cylindrical tubular member 39, the bore 40 of which is conical or tapering,

withthe larger end of thetaper uppermost,

so that the cylindrical lower carbon :41 may be wedged'within the holder, as shown in Fig. 5.. The upper end of the bore 40 is fo'rmedwith a bushing or-shoulder 42, having cylindrical walls and of a diameter equal to that of the lower carbon, so that the car bon when inserted in the holder is maintained in axial alinement with the bore thereof. This construction insures the perfect centering of the carbon in the holder, and at the same time the carbon may be forced .in firmly in the taper of the holder without using any care as to centering it. This feature of the conical receiving-socket for the carbon, combined with the internal shoulder or bushing 42,con1pensates for the ordinary irregularities found in the surface of the carbons, so that .provided with a socket 37, which opens laterthe carbon will assume a vertical position nut 45, which cooperates therewith, are so proportioned that the flange lies within the globe 26, while the nut 45 engages the exterior thereof. In the present construction the upper w face of the nut 45 is made flat, so that it abuts against the ground end of the globe. 26, as shown in Fig. 5. By this arrangement the globe may be clamped between the flange 43 and the nut 45 by screwing up the latter. However, I prefer to interpose between the engaging face of the flange and the interior of the globe a suitable packing or a washer 46 of soft material, which I preferably make of asbestos; This soft washer permits of the globe being clamped tightly between the two members without the liability of breaking the globe, and, furthermore, it makes a more perfect inclosure, as it affords a better seal than rigid material.

28 rest with its own weight upon the upper end of the globe, whereupon the set screw 38 is turned down to clamp the holder in the socket. In dismounting the holder from the bracket the set-screw 38 is unscrewed and the holder is lifted out 'through'the open side of the socket 37. r I

The outer globe 47 for covering the light depends from the lower part of the lamp, being held at its upper end by a suitable holder 48. This holder is vertically adjustable, so that by raising it the outer globe may be carried up against the under side of the base-plate 17,

so as to cover the light, as shown in Fig. 7, while lowering the holder causes the globe to descendto a position below the light, as shown in Fig. 8, and in this latter positionfull access is given to the inner globe and carbon holder for the replacement of the carbons. There are many well-known ways in which this outer globe may be vertically adjusted so as to open and close it; but I show only one way, which consists in two friction-

clutches

49 and 50, each of which is formed with a circular opening 51 for receiving the

vertical rods

52 and 53, respectively, ofthe lamp.- frame. The opening 51 in each of the clutches is somewhat larger than the frame-rod which passes through it, so that the clutch may be tilted relatively to the rod in order to cause it to bind upon the rod and to release it. The friction-clutch 49 is connected with the holder 48 by a flexible connection or chain 54, while the clutch 50 is likewise connected bya chain 55. By raising the outer end of each of the clutches they are caused to unclutch the rod and may then be moved up or down along the rods, according to whether the outer globe is to be closed or opened. This construction of the vertically-adjustable means for the outer globe-holder affords a very simple and safe means for accomplishing the purpose for which it is designed, and the specific means, as shown, cannot accidentally become detached from the lamp without some part thereof breaking, since the clutches themselves are confined to the lamp-

rods

52 and 53 against any accidental detachment therefrom. By using a piece of stone, such as soapstone, for the body of the disk 28 I secure a certain .desirable weight for the disk, so that it keeps itself firmly seated upon the upper end of the inclosing globe, and at the same time it provides insulation at this point.

I Wish to be understood as not limiting my improvements to the specific forms of construction herewith shown, as various modifications may be made in the same without departing from the spirit of the invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination of a carbon-rod of an electric-arc lamp, feed-regulating mechanism loosely engaging the said carbon-rod, a guide for said carbon-rod pivoted to a moving part of the feed-regulating mechanism and engaging the carbon-rod at a single point, whereby the carbon-rod is free to swing on the pivot of said guide, substantially as and for the purpose set forth.

2. The combination of a carbon-rod of an electric-arc lamp, feed-regulating mechanisn engaging said carbon-rod, a guide pivoted on a moving partof the feed-regulating mechanism and engaging the carbon-rod at a single point and practically where it is engaged by the said feed-regulating mechanism,whereby the carbon-rod isfree to swing on the pivot of said guide, substantially as and for the purpose set forth.

3. The combination of a carbon-rod and a tilting feed-regulating mechanism therefor, a

mounted as to be freely tipped in any direction at an angle to the vertical, substantially as and for the purpose set forth.

6. A movable guide for the upper carbon, the same comprising a horizontal disk having a central perforation for the carbon to pass through, the periphery of said disk being formed like a section of a sphere, a fixed plate having a circular opening with a diameter equal to the diameter of the said disk, and

means for retaining the disk within the circular opening at the same time permitting a IIO free rocking movement therein, substantially as and for the purpose set forth.

7. A movable guide for a carbon, the same consisting in a horizontal disk provided with a central opening for the carbon to pass through and mounted so as to tilt in all directions about its vertical axis, the opening in said disk being provided with a soft material for surrounding and engaging the carbon,

substantially as and for the purpose set forth. 8. A movable guide for a carbon, the same comprising a disk having the body thereof formed of rigid material provided with a central opening having a larger diameter than the carbon, a piece of flexible material mounted upon said disk and provided with an opening smaller than and concentric with the opening in said disk and adapted to receive the carbon, the 1 said disk being horizontally mounted so as to tilt in all directions about.

its vertical .axis, substantially as and for the purpose set forth.

9. A movable guide for-a carbon, the same comprising a fixed plate having a circular opening, a disk of rigid material formed with a central opening for the carbonand having its periphery formed like the section of a sphere and of .a diameter slightly less than thediameter of the opening in said fixed plate,

a retaining device'for preventing the disk from dropping through the .opening in the said fixed plate, substantially as and for'the purpose set forth.

10. A movable guide for a carbon,-the same comprising a fixed plate having a cylindrical opening, a disk provided with a circular opening for the carbon and having its periphery formed like the section of a sphere, the diameter of the disk being slightly less than that of the cylindrical opening in said plate,

and means for retaining the disk in the cylindrical opening at the same time permitting it to rock in all directions about its vertical axis, substantially as and for the purpose set forth.

11. A movable guidefor a carbon, the same comprising a fixed plate having a circular opening, a disk of rigid material provided with a central opening for the carbon, the

said disk having a diameter slightly less than that of the circular opening in the plate so as to fit loosely therein, a plate secured to the upper side of said disk and of a considerablylarger diameter than the opening in said plate, a layer of flexible material interposed between the upper face of the disk and the plate secured thereto, the said flexible material being formed with an opening smaller,

than, but concentric with, the opening in said disk, substantially as and for the purpose set forth.

12. The combination of a carbon-rod and carbon of an electric-arc lamp, an arc-inclosing globe, a tilting horizontal guidedisk mounted so as to tilt in all directions about its vertical axis and through which said carbon loosely passes, said guide-disk adapted to rest loosely upon the'upper end of said globe and closing the same, substantially as and for the purpose set forth;

13. A combined carbon-holder and globe holder consisting in the combination of an externally-threaded tubular member, the

socket of which is adapted to receive and hold the carbon, the said tubular member being formed near its upper end with an external flange lying within the globe, a nut mounted upon the thread of said tubular member and adapted to engage with its upper face the end of the globe, and a soft washerinterposed between said flange and the interior of the globe, wherebythe tightening of the nut exerts an endwise pressure on theglobe, clamp ing it between the nut and the soft washer, substantially as and forthe purpose set forth.

14. A tubular carbon-holder for an electric-.

arc lamp havinga taperingsocket for receiving the carbon, substantially as and forthe purpose set forth. v

' 15. Atubular carbon-holder for an electric- .ai-c lamp having'a tapering socket formed at the receiving end of the taper with an internal shoulder, substantially as and for the purpose set forth.

16. The combination of a lam p,'a fixed piece and a vertically-adjustable globe-holder adapted to seat itself against the under side. .of said fixed piece for'suspending the globe,

one or more rods extending above said'fixed piece,'and flexible connections having their lower ends attachedto said globe-holder and their upperends provided with clutches traveling on and engagin gsaid rods, substantially as and. for the purpose set forth.

17. The combination of a lamp, one or more rods, a fixed piece" and a globe-holder adapted to rest against said fixed piece, apclutch ,mountedon each of said rods and vertically adjustable along the same, said clutch comprising a movable memberprovided with an opening slightly largerthan thesaid rod which extends through the openingso that depressing one end of said clutch member causes the same to clutch thBxI'Od while the raising of said end of the clutch member, unclutches said member from the rod, and chain connections between each of the said clutch members and the globe-holder, substantially as and for the purpose set forth.

18. The combination of an upright fixture for a light, a vertically-adjustable globeholder and a fixed piece against the under side of which the globe-holder is adapted to rest,

a set of vertically-adjustable'flexible connections attached by their lower ends to said globe-holder and adj ustably attached by their upper ends to the upper portion of'the fix- -ture, substantially as and for the purpose set forth. 1 I

' 19. The combination of the lower-carbon holder, adepending bracket provided with a horizontal extension having a lateral opening for receiving the carbon-holder, and a setscrew taking into said opening for engaging 674,642 r i I 5 said carbon-holder to clamp it in place, subl to rest upon the upper end of said globe, substantially as and for the purpose set forth. stantially as and for the purpose set forth.

20. The combination of a carbon-rod and a In testimony whereof I have hereunto set tilting feed-regulating mechanism therefor, my hand in the presence of the two subscrib- 5 a guide for said carbon-rod pivoted to the ing Witnesses.

tilting mechanism, an arc-inclosing globe, a combined cap and carbon-guide comprising a disk having a central perforation, said disk Witnesses: being mounted horizontally so as to tilt in all SAMUEL M. OHESNUT, :0 directions about its vertical axis and adapted WILLIS FOWLER.

ROYAL E. BALL.