US994425A - Method of anchoring filaments. - Google Patents

Description

H. R MANE. METHOD OF ANCHORING FILAMENTS. APPLICATION FILED JUNE27, 1906.

Patented June 6, 1911.

Invenfor:

' HermannFe/nw'a By @WPM Wine new

UNITED s12 ans PATENT OFFICE.

n'nnlymnnnnM Nn, orv BERLIN,

GERMANY, ASSIGNOR, BY GENERAL ELECTRIC COMPANY, A CORPORATION MESNE ASSIGNMENTS, TO OF NEW YORK.

METHOD or ANCHORING FILAMENTS.

Specification of Iietters Patent.

Patented June 6, 1911.

Application filed June 27, 1906. Serial N 0. 323,752.

To'all whom it may concern:

Be. it known that I, HERMANN REMANL' chijef engineer, a subject of the Emperor ,of Germany, V

o. 13.9, Berlin, Germany,

2o. Li t e e sa y .support in addition to their attachment to poseconstructions have" been. designed in f erent. pointsoftheir. length by means of hold constructions such holders tachedto a I 3 [theMethod of :lar novel method th s m are so constructed, that their position rela- J akobstra-sse' have invented and useful Improvements in Anchoring Filaments; and I do hereby declare. the following tobe a residing at Alte certain new full, clear, andexact description of the in vention, such as'will enable others skilled fin. the art'to Whichit appertains to make and; use the same, reference being had to the accompanyingidrawings, and to letters or figures of reference marked thereon, which form a part of this specification- My; invention relates to electric incandescent lamps with metallic filaments of tliatty e n which" the filaments are formed o. gaxia y arranged narrow loo s. to prevent the filaments from being injured, ,to give them some further the conductingterminals. For this pur- Which the filaments are supported at difbulb. In other have been atdisposed within manufacture of er's projecting from the carrier. axially the? bulb. However, in the such lamps, and particularlyivhere filaments are used which, when cold, are brittle, it has been found very difiicult to insert the filaments into the loops or hooks 0f the. holders.

ow, my invention consists in a particufor enabling the filaments toeas'il be inserted into thebent ends of .the hol ers, forming hooks or loops, and in the method of inserting the filaments into For this purpose the holders tively'to the filaments can be chan ed and s the filaments. can hooks or loops by be secured withln their so changing. the relative position. of the same. In the preferred form,

'eachholder comprise'stwo sections, one sectionj beingthe hook or loop shaped guidepiece- 'for the'fila nent,lwhich consists of any preferred, well-known material, for instance I thorium oxid, u ne i f h (a joint, whereby said guide-piece is the in adapted to resist the other section eat, a

In order.

movable so as to permit 'troduction of the filaments.

connected to the carrier, and which. preferably consists of a wire of flexible material adapted to be bent and to betwisted by torsion.

In the accompanying drawing several exv mples of incandescent lamps are illustrated,

all of which embody the invention. in its preferred form.

Figure 1 shows an incandescent lamp with three filaments which are supportedby loops of holders attached to one end of an axial carrier. Fig. 2 shows a modification of the lamp in Which two rows of loops are attached to the axial carrier for the purpose of holding the filaments.

loops in the middle of the carrier and hooks at the end thereof are respectively attached for holding the incandescent filaments.

In the example shown. of the incandescent lamp a is provided with an internal carrier 6 made of glass, on the endofwhich the holders 7 for thelooped incandescent filaments c, d, c, are mounted. The loops 0 and e are connectedat one end to the connecting wires 9 and h which are the lamp in the. well Fig. 3' shows another modification of. the lamp in which in Fig. 1 thestem .7 2', 7c are passed.

and they are connected in f which form, with their loops, guidwpieces for the filaments and are preferably constructed of difiicultly fusible metal lie oxids, such as oxid of thorium, which are rigid, are attached to the'carrier b 7 wires or-joints Z of easily flexible material, forinstance platinum,

the convenient in- The method of inserting the filamentinto the loop is as follows: The loop is first placed parallel to and at the side of the filament, in which position of e loop the-filament can be passed into the latter. After by means of thinner whereby they are so inserting the filament into the loop the holder is twisted at a right angle by means of a forceps, which is perinitted by its joint Z, 50 that itstands transversely to the filament and thus incloses it.

In the example shown in Fig. 2 two rows of holders are mounted on the carrier 1) in such a manner that each filament is passed through four loops. In the example illustrated in Fig. 3 the filaments are secured to hooks m attached to the free end of the carrier b and also each by means of two loops attached to the body of the carrier.

The construction of the hook shaped holder m is substantially the same, as that of the loop shaped holder f. It also consists of an outer guide-piece and a joint or connecting piece Z of flexible material. For the purpose of inserting the filament into its hook the holder is bent into the curved part of the filament and then bent into its normal position in which it holds the filament and prevents the same from slipping out.

Having thus described my invention,what

I claim as new therein and desire to secure by Letters Patent of the United States of America, is:

1. The method of securing filaments in electric incandescent lamps, which consists in placing a flexible looped holder at the side of the filament, with the loop arallel to the filament, then passing the filament into the loop, andthereupon twisting the holder so that it will stand transversely of the filament and inclose it.

2. The method. of securing filaments in electric incandescent. lamps, which consists in placing a movable open guide-piece at the side of the filament, then passing the filament into said guide-piece, and thereupon twisting the guide-pieceso that it will stand transversely of the filament. In testimony that I claim. the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

W'OLDEMAR HAUPT, HENRY HASPER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.

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