US1830687A - Incandescent bulb shade structure - Google Patents

Description

Nov. 3, 1931. w. A. AMES 1,830,637

INCANDESCENT BULB SHADE STRUCTURE Filed Nov. 21. 1950 2 Sheets-Sheet l Iri oentor A llor ney Nov. 3, 1931. w. A. AMES 1,830,687

INCANDESCENT BULB SHADE STRUCTURE Filed Nov. 21, 1950 .2 Sheets-Sheet 2 Inventor A llorney Patented Nov. 3, 1931 UNITED STATES WILLIAM A. AME-S, OF YGRSK INCANDESCENT BULB SHADE STRUCTURE Application filed November 21, 1930. Serial 'No.r497;306.

ticular reference to a structure to which is expressly, but not necessarily, designed for use in a textile mill.

It is a matter of common knowledge, to persons skilled in the art to which the invention relates, that lighting facilities are frequently inefficient and this is generally due to the fact that the electric bulbs afiording the source of light are generally suspended or hung at points remote from the weaving machine. This is objectionable because the light beams and rays are projected in an irregular fashion on the cloth, thus resulting in the development of objectionable shadows, such as interfere with proper inspection of the cloth during manufacture.

Electric suspension cords generally employed in association with the bulb are in plants of this character subject to rapid deterioration because of excessive moisture and this causes the cords to rot and produces short circuits. Moreover, as the lights are generally not rigidly supported, they are susceptible to unusual and undesirable swinging rather loosely, then too, because of the distant relationship of the bulbs to the machines and cloth, strong wattage bulbs are required. This promotes unnecessary expense of illumination.

Some attempts have been made to provide various shock absorbing means for these re mote suspended lights, and sometimes the lights are mounted on the machine. Owing to excessive vibration however, lights mounted on the machine and rigidly attached as they usually are, are subject to undue vibration and subsequent destruction.

The purpose of the present invention is to provide a simple and economical lighting fixture which is characterized primarily by a unique type of shade whose function is to provide a shadow-proof reflector.

A feature of the invention is predicated upon the use of 'a rectangular box-like in- OFFICE vented shade which is yieldably suspended direct from the machine in close-proximity to the cloth, whereby to project the light rays and beams intimately against the cloth.

Additional novelty is founded on the usage of elastic suspension springs permitting the device :to :be yieldab'ly suspended directly from {the machine atthe desired point with respect to the cloth,

A still further tteatureof "the invention is dependent upon the utilization of a rectangular reflector or shade and an associated frustoecon ical canopy which is associated with tilre shade and located off-center .so as to equalize and render uniform the distribution of light rays and to minimize the development of objectionable shadows.

Otlierffeatures andladvantages will become more readily apparent from "the following description andgdrawin In the drawings:

Figure 1 is front e evational 'V ieW OIE a. device constructed in accordance with the present inventive, conception. 1

. Figure issa bottomfview'thereo'f. Figure3-is-an 'endview.

Figure 4; is a sectional iew showing the relativemechani'ca-l relationship 'of the features of thecasing or'sh'ade.

Theshade in the drawings is generally des: 1

ignated byfthe reference character '5 and it is constructed of appropriate material. As before stated, it is of general rectangular boze Y I like form andthe four walls thereof are spaeed-andparallelwithrrespect to each other.

oandeso'ent-electric bul b 13. TT-h'e numerald i merely designates the ellec'tric current supply had. Therefore, a more lengthy description ing bead, and a bulb clamp including a flanged marginal portion provided with set screws for detachable engagement with said bead. V

In testimony whereof I afiix my'signature.

WILLIAM A. AMES.

This canopy 7 has swivel or rotatable connc tion with the top 6 so .thatitcan be turned .7

with respect to the latter details to regulate V the light beams.

The numeral 18 in Figure 1 designates an apertured attaching lug which is used when the shade is attached to a vibrationless machine. At the four corners are additional aperturedears or lugs 19 which serve to accommodatecoiled suspension or hanger springs v 20. These springs are rigidly attached to existing parts 21 of the textile machine. This therefore allows the device to be yieldably suspended directly fromthe machine in close proximity to the cloth to permit inspection of the texture as the operation ofweaving is carried on.

It might also be mentioned that the marginal lower end portions of the walls of the casings or shade are rolled as at 22and these I contain a reinforcing. wire to render the structure rigid and sturdy.

"It is thought that the description taken in connection with the drawings will enable a clear understanding of the invention to be 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 in- Q vention claimed may be resorted toif desired.

Iclaim:

' 1. As a new product of manufacture, an incandescent electric bulb shadecomprising a longitudinally elongated substantially rectangular open bottom box-like casing of a comparatively shallow depth including plane spaced parallel side and end walls, and an upwardly arched concave-convex top, said top being formed at a point ofi' center withan opening to accommodate a source ofillumination, and a frusto-c'onical canopy located in said opening and provided at its top with bulb supportingmeans.

i 2. In a structural assembly of the class de scribed, in combination, a casing comprising a rectangular body including straight parallel and and side walls", and a curvate top, said top being provided with an opening located off center, a frusto-conical canopy having a'flange atits bottom, the lower end portion of said canopy. extending through said opening and said flange being in contact with the under side of saidcurvate top, the upper portion of the canopy projecting above said top and :9 formed withanannular outstanding retain;

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