US311142A - Half to w - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

VOLTAIG ARG LAMP. No. 311,142. Patented Jan. 2o, 1885.

INVENTOR.

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W. P. PATTON.

VOLTAIO ARG LAMP.

No. 311,142. Patented Jan. 20,1885.

WITNESSES.:

3 Sheets Sheet 3.

(No Model.)

W. P. PATTGN.

VOLTAIG ARG LAMP.

'110.611,142. Patented Jan. 20, 1885.

WITNESSES: 4

UNITED STATES PATENT OFFICE.

i VILLIAM I). PATTON, OF HARRISBURG, PENNSYLVANIA, ASSIGNOR OF ON E- HALF IO lV. E. MAOHLIN, OF SAME PLACE.

VOLTAlC-ARC LAMP.

SFEGIFICATION forming part of Letters Patent No. 311,142, dated January 20, 1885.

(No model.)

Z0 aZZ whom t may conceive:

Be it known that I, WILLIAM P. PAT'roN, a citizen of the United States, and a resident of Harrisburg, in the county of Dauphin and 5 State of Pennsylvania, have invented certain new and useful Improvements in Voltaic-Arc Lamps; and I do hereby declare that the following is a full, clear, and exact description of the invention,which will enable others skilled Io in the art to which it appertains to make and use the saine, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure l is a side view of an electricalarc i5 lamp embodying my improvements. Fig. 2 is a similar view illustrating the parts comprising my improvements in section. Fig. 3 is a detail view of the feed-cylinder. Fig. 4 is a detail view of the feed-screw through 2o which air is admitted to the lower end of the globe, and Fig. 5 is aside view illustrating a modification.

The same letters refer to the same parts in all the iigures.

My invention has relation to that class of arc-lamps in which the globe is closed air-tight at both ends and provided with a closed casing for the passage of the carbon and its holder from the feed-case; and it consists in the 3o improved construction and combination of parts of the same, as hereinafter more fully described and claimed.

In the drawings hereto annexed, A designates the feed-case of an ordinary arcflamp. 35 Bis the upper frame-bar. O O are the side frame-bars, and D is the bottom bar of the frame which supports the globe. lTubes E E for the carbon-holders extend upwardly from the feed-case A.

F designates the globe, which is preferably of aspherical shape, or nearly so, and which is provided at its lower end with an opening, G, having a flange, II, which rests upon the bottom bar, D, of the frame, between which and 45 the said flange a sheet, I, of rubber or other suitable flexible material, is interposed in order to form an air-tight joint.

Upon the horizontal plate J, which is mounted upon the basebar D, and which 5o serves to support the globe, is secured a standard, K, having arms L, provided with sockets M, one of which serves to support the lower carbon point. In the drawings two sockets are shown, but only one set of carbons is used, the other socket serving simply as a reserve socket in the case oian accident.

The under side of the feed-case A is provided with an opening, N, surrounded by a flange or fer-rule, O. The latter is provided with a pin, I), by means of which a tube or cylinder, Q, may be detachably connected to the same, the said tube having an L-shaped notch, It, at its upper end, forming what is commonly termed a bayonet-j oint,7 7 whereby the said tube may be detachably connected to the said flange. rIlube Q is provided about midway of its length with an opening, S, located between two annular Ilanges, which lat ter serve as guides or bearings for arevolving ring, T, having an opening, U, which may be made to register with the perforation S, and through which admission oi' air into the cylinder or tube may be regulated, or, if desired, entirely stopped by simply turning the ring T, which is for this purpose provided with a handle, V.

lV and X are tubular sections teleseoping within each other and within. the upper sec tion, T. rlhese sections are provided at their upper edges with annular grooves or recesses, in which packing Z, of any suitable material, is placed.

ForI packing I prefer to use soft asbestus, 'for the reason that this material is not aitected by heat, while it will readily retain oil, tallow, or other lubricating material, which is necessary in order to cause the telescopic sections to work i'reely within each other. The lower section, X, is rigidly connected to the top or cover A of the globe F. The said cover is concave-convex in shape, and is provided at its outer edge with two concentric annular iianges, B and O, etween which a ring or washer, D, of rubber or other suitable material, is interposed, the said washer vprojecting beyond the lower edges oi' the said llanges, as clearly shown in Fig. 2 of the drawings. It will thus be seen that when the cover is lowered upon the lamp the `washer D will serve to form a joint which is absolutely air- IOO tight. The cover A' is provided with a centrally-located secke y, E', adapted to receive the shank F' of a nut, G', adjustable upon the lower end of a rod, H', which is pivotally connected to the under side or bottom of the feedease A. lt will be seen that by this arrangement, when the holding-nut G is screwed in an upward direction, so as to release it from the socket upon the lamp-cover, it may be swung out ofthe way, so as to enable the said cover to be raised or lifted, this being made possible by the telescopic joints or tubes heretofore described. lf access to the carbonholder is desired, (the carbon-holder,which is indicated by letter l', is clearly shown in Fig. 2 of the drawings, and it will be seen that it is provided at its lower end with a carbonclamp, J', of ordinary constructiom) it may be had by detaching the upper telescopic tube from the flange of the feed-box to which it is attached, and this may be done by simply turning the said upper tube so as to release its L-shaped notch from the pin of the holdingflange. The lower frame-bar, B, is provided with an inclined screw-threaded perforation, K', in which is fitted a screw, L', one side of which is flattened or provided with a V -shaped recess, M', as clearly shown in Fig. 2 of the drawings. This screw extends through the rubber washer l, and by it the admission of air to the lower end of the globe may bethoroughly regulated.

Frein the foregoing` description, taken in connection with the drawings hereto annexed, the operation and advantages of my invention will be readily understood.

Vhen it is desired to renew the carbon points in the lamp, this may be done by first releasing the nut G' from the cover and swinging the rod carrying the said nut backward and out of t-he way. The cover of the lamp may then be raised by the hereinbefore-dcscribed arrangement of the tubular and teleseoping sections, thus affording free access to the interior of the globe and to the upper-carbon holder.

lVhen it is desired to clean the upper-carbon holder, which is frequently necessary in order to cause its uninterrupted operation, this may be easily done by removing the telescopic tube, which may be accomplished by simply turning its upper section so as to release it from the pin P. posed between the lower support of the lampglobe and the flange H of the same, serves to take up any expansion of the globe, so as to prevent breakage of the latter. rEhe admission of air to the globe will be regulated not only by the band or rim S upon the upper section of the telescopic cylinder, but also by the feed-screw L' at the bottom of the globe. I thus establish a through current of air without providing an excess of oxygen, so that eX- cessive consumption of the carbon points may be absolutely prevented simply by properly adjusting the air entrance and cXit. It will The packing I, inter-v also be seen that it is utterly impossible for insects or other causes of obstruction to enter the globe.

My invention, as above described, has been j shown applied only to a lamp originally constructed to use two sets of carbons; but it is obvious that the invention may be equally well and successfully applied to a single are lamp by simply making trilling modifications inthe construction of details. One way of doing this l have illustrated in Fig. 5 ot' the drawings hereto annexed, by reference to which it will be seen that the telescopic tube, which is here designated by letter A2, is connected centrally instead of eccentrieally to the feed-case B2 and globe-cover C2. DE is a rod hinged eccentrically to the under side of the feed-case, and composed of sections Ei Fl, connected by a right and left hand nut, G2, by means of which the lower section may bc forced down against the globe-cover, so as to retain the latter securely in position. rlhe said lower section, F, is provided with ahori- Zontal fork, H, straddling or embracing the telescopic tube so as to bear or press squarely upon the globe-cover. The operation ot' this modification is obvious when reference is had to the foregoing description.

I would have it understood that in many respects this invention maybe changed or moditied without departing from the principle involved, and that l reserve to myself the right to all such changes and modifications as may be made without departing from the spirit of the invention.

Having thus described my invention, l claim and desire to secure by Letters Patent of the United Statesl. In an electric lamp, the combination of a feed-case, a supporting-frame suitably conneeted to the same, a globe suitably mounted in the said supporti11g-trame, an air-tight cover for the said globe provided with a socket upon its upper convex side, a rod pivoted to the under side of the feed-ease and having at its lower end a nut, the shank of which is adapted to work or slide in the socket of the air-tight cover, and a telescopic tube connecting the said air-tight cover with a flange upon the under side ofthe feed-box, substantially as set forth.

2. ln an electric lamp, the combination, with a feed case, the supporting-frame attached thereto, and a globe mounted in the said supporting-frame, of an air-tight cover for the said globe, a telescopic tube connecting the said air-tight cover with a flange upon the under side of the feed-case, the upper section of the said cylinder or telescopic jointed tube being provided with a perforation, as shown, an adjustable gate for the said perforation, and means for admitting regulated quantities of air into the bottom of the globe, substantially as set forth.

3. In an electric lamp, the combination, with a feed-case, of a frame attached to the same and supporting a globe an air-tight cover for the latter, a central pivoted rod attached l to the under side of the feed-case and connected detachably with the center of the airtight cover of the globe, and an eccentricallyarranged telescopic tube connecting the said air-tight cover with the under side of the feedcase, substantially as set forth.

4. In an electric lamp, the combination7 with the feed-ease having an eccentricallyarranged downwardly-projecting ilange or collar, of a tube mounted detachably upon the said collar and provided with an air-admission opening and a regulating gate, additional tubes teleseoping within the said detachable tube, a globe-cover connected permanently and eccentrically to the lowerlnost tube7 and a suitably-arranged globe, substantially as herein set forth.

5. In anl electric lamp, the combination of a suitable feed-case, the frame attached to the same, a flanged disk arranged upon the lower frame-bar, a flexible packingdisk arranged upon the said plate, a grooved or flattened feed-screw extending through the said plate and packingdisk, a flanged globe mounted upon the latter, an air-tight cover for the said globe, a central rod pivoted to the under side of the feed-case, and having a nut whereby the said cover may be tightened aga-inst the upper side ofthe globe, and a telescopic tube connected detachably to the under side ofthe feed-case, and having its lower section connected eccentrically to the airtight cover of the globe, the upper section of the said telescopic tube being provided with an air-inlet and mechanism i'or regulating the admission ot' air, substantially as herein described, for the purpose set forlh.

In testimony that I claim the foregoing as my own invention I have hereunto at'xed iny signature in presence of' two witnesses.

XVILLIAM I?. PATTON.

W'itnesscs:

ANTHONY KING, WM. H. CLECKNER.

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