US1855557A - Bulb attachment - Google Patents

Description

April 26, 1932. M. M. O'LEAR 1,855,557

' BULB ATTACHMENT Filed April 9, 1931 7 Inventor .wriz'izfli fifliear Patented Apr. 26, 1932 MARTIN M. QLEAR, or mncnnune; 'rnmvsnlvmn BULB ATTACHMENT Application filed April 9,

This invention relates to an automotive appurtenance or accessory in the form of an attachment designed and constructed for application to an incandescent bulb of the type employed in present-day automobile and motor vehicle headlights.

The purpose of the invention is to provide a simple and economical attachment susceptible of ready attachment to a conventional bulb, said attachment being characterized by two primary parts; namely, a shield and retention means therefor.

The shield is so shaped and proportioned as to snugly fit against and embrace a predetermined portion of the bulb in such a way as to inhibit certain lateral and downward projection of filament illumination and to concentrate and permit free upward reflection to confine the illumination of the bulb to the upper half and side portion of the main reflector in the headlight casing, whereby to provide for the formation of a beam designed to promote safe driving and to minimize objectionable glare.

In the drawings:

Figure 1 is a side elevational view of an ordinary headlight bulb with the attachment in operative position.

Figure 2 is a bottom plan view thereof.

Figure 3 is a front end elevation.

Figure 4 is a cross section on the line H of Figure 1.

In the drawings, the bulb is generally designated by the numeral 5 and is of ordinary single or double filament construction. The globe 6 is of customary configuration, that is bulbous in form. The attachment comprises two distinguishable parts, that is, a shield 7 and an attaching and retaining clip 8.

The shield 7 is of appropriate sheet mate rial and is shaped to conform to the lower half portion of the bulb 6. It includes a rear extension 9 and a frontal portion 10. The extension 9 as observed in Figure 1 is substantially triangular in general outline and is transversely bowed or curved to conform to that portion of the bulb with which it cooperates. The frontal portion 10 is substantially semi-spherical in shape and embraces the lower and front portion of the bulb 6.

1931. Serial No. 528,884.

Thisshield is imperviousj'to the downward is passage of light rays and its"inner surface may be constructed to serve as a :reflector. Thus, ma sense, the vpart 7 1s a shield against downwa d 'ays from the filamentofthe bulb and is a miniature or secondary reflec tor to project. said rays upwardly agains'tthe main reflector (not shown) of' the headlight casing.

The retaining clip 8 is made from resilient wire of appropriate tensile strength and is so fashioned as to provide a saddle 11 in which the part saddle being fashioned to the part 9 as indi- 'cated at 12 in Figure 2.

9 is seated, the bight portion of the There is also a substantially V-shaped saddie as at 13 secured in place at the point 14. The side portions of the retainer constitute resilient grips or jaws 15 which engage over the bulb 6 at a point above the focal or axial point. pleX saddle serving as a hanger for the shield 7 and also as a resilient grip for securing the shield onto the bulb in the effective position illustrated in the drawings.

All that is necessary to accomplish the desired result is to place the shield 7 in the position represented in Figure 1 and to snap the retention arm 15 over the bulb 6, thereby holding the complete attachment in set posi- ,1

tion. When in place, the attachment serves to accomplish systematic correction of filament ray distribution and itself has the function of a miniature reflector. By thus inhibiting the downward radiation of light from the filament onto the lower half portion of the main reflector, and reflecting this other- Consequently, this device 8 is a duwise wasted illumination onto the upper half portion of the reflector, a more satisfactory beam is developed, and objectionable glare from the headlight is reduced to a minimum.

It is thought that the description taken in connection with the drawings will enable a clear understanding of the invention to be had. Therefore, a more lengthy description.

is thought unnecessary.

While the preferred embodiment of the invention has been shown and described, it is to be understood that minor changes coming within the field of invention claimed may be resorted to if desired.

I claim:

An incandescent bulb attachment comprising a shield for receiving the lower part and front end of a bulb, the rear part of the same being of substantially triangular shape and bowed transversely and the front part being of substantially semi-spherical shape and a spring member for attaching the shield to the bulb, and said member including a 'substan tially vertically arranged U-shaped part having its bight-attached to the rear part of shield and a substantially U-shaped front part having its bight attached to the front end of the shield said front part having its limbs sloping upwardly and rearwardly and substantially horizontally arranged central parts connecting the limbs of the front U- shaped part with the limbs of the rear U- shaped part.

In testimony whereof I afiix my signature.

MARTIN M. OLEAR.

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