US847396A - Process for producing light-transmitting objects. - Google Patents

Description

No. 847,396. PAT-ENTED MAR.19, 1907;

PROCESS FOR PRODUCING LIGHT TRANSMITTING OBJECT-Sv Arm-tumor! FILED APB. so, 1900. RENEWED FEB. 12, 1907.

UNITED STATES.

PATENT OFFICE.

ERNEST noun, or LONDON, ENGLAND.

PROCESS-FOR PRODUCING ueHT-TRANsM TTm OBJECTS.

noxsmsee.

Specification of Letters Patent.

Patented March 19, 1907,

Applicatioii filed April 30, 1906'. Renewed February 12, 1907- Serial No. 357,058.

To all whom it may concern:

Be it known that I, ERNEST Bonn, a subjectof the King of Great Britain, and residing at London, England, have invented new and-useful Improvements in Processes for ;Pr0duci'ng- Light-Transmitting Objects, of

1 which the following is a specification.

My invention relates to a process for pro ducing light-transmitting objectssuch as lamp bulbs, globes, shades, and the like having superior light-transmitting and lightdifl'using qualities, and consists in the suc- 'cessive steps hereinafter described, with the steps will be 'means illustrated in the drawings, which partlcularly pointed out in the -claims.

The object of my invention is to provide a process by. the use of which a pluralityand multiplicity of individual and'independc'nt lenses may be formed integral with' the walls of light-transmitting objects, such as a globe or-bulb of an electric lamp, for the purpose of improving the illumination and the diffusion of light. Forthe purposebf illustration I will de-v scribe my invention with particular reference to the production of incandescent electric-lamp bulbs; but it will be understood that other light-transmitting or light-diflusing objects may be formed similarly. i

In the accompanying drawings, forming a part of this application, and in which like letters refer to corresponding parts, I have shown the parts with which I carry out my process and the product I obtain.

Figure 1 represents aside elevation of an ordinary glass tube. from which smooth or common globes or bulbs are formed or blown.

- Fig. 2 represents different forms of rods, such as may be used, having bosses or notches for producing the lrregular lens-surfaces hereinafter mentioned. Fig. 3 represents the uniting of such a rod to a glass tube by winding it about the same.

Fig. 4 represents a side view of a globe or bulb-made 1n accordance with my process, showing a plurality and multiplicity of lenses and provided with an incandescing filament.-' Fig.

o represents a bottdm plan view of the globe or' bulb man ufactured by my process, showing in convolute lines a' pluraht-y and multlplicity of lenses on the same.

In making my lamp I take a lass tube A, preferably partly opal or colored, of the size and length usually employed in forming or blowing glass bulbs or globes for lamps and wind spirally around, either inside or outside, rod or thread B, provided with notches, bosses, or swellings, round, oval, or oblong, said rod or thread B having been-heated to a suflic'ient degree to render it pliable and easily bent, as shown in Fig. 3. The tube and rod thus wound are then heated't o the required degree for blowing and are blown to any desired size. During the blowing operation and swellings, is incorporated and'blended thereof, making an irregularly-corrugated surface with a multitu e of independent and crossing of the surfaces ofthe tube and rod. These lenses will disseminate independwhat I claim, and desire to secure by Letters Patent, is

1-. The herein-described process of making light-transmitting and light-diffusing objects which consists in forming a rod having numerous surface irregularities or bulbs and uniting the same with a plain surface, substantially as described.

2. The herein-described process of forming or making light-transmitting and light-diffusing objects, which consists in winding upon a the required temperature for blowin and blowing the bulb and rod to the esired face of said globe a multiplicity of light-radi ating lenses-substantially as described,

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

ERNEST BoHMj VVit-nesses H. D. JAMESON,

A. NUTTI'NG.

the spirally-wound glass rod, with its bosses ent and distinct rays of li ht, and thus. the.

glass tube, a rod having numerous surface irregularities,' raising thetube and rod to with the tube and becomes an integral part lenses formed in the globe by the breaking up Having thus fully described my invention, I

shape and size, thereby forming on the sur-

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