US1027888A - Shade-holder for incandescent lamps. - Google Patents

Description

H. H. PALMER. SHADE HOLDER FOR INGANDESGENT LAMPS. APPLICATION FILED MAR. 19, 1'912.

1,027,888. Patented May 28, 1912.

INVENTOI? A7TORNEY8 emes.

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HERMAN HQPALMER, OF CHARLESTON, SOUTH CAROLINA, ASSIGNOR OF ONE-HALF TO FRANCIS J. SEEL, OF CHARLESTON, SOUTH CAROLINA.

. SHADE-HOLDER FOR rnoANnnsoEN'r Lei/res.

To all whom it may concern:

Be it knoi'n' thatI, I'IERMAN H. PALMER, a citizen oft-he United States, and a resident of Charleston, in the county of Charleston and State of SoutlrCarolina, have invented new and Improved Shadellolder for Ineandescent'Lamps, of wlnch the fol lowing is a full, clear, and exact descripglobes or spheres that completely inclose the lamp. Shades of the character in question are f01'1l'l(l with outwardly projecting heads or flanges at the upper end, the flanges usually flaring, and the bcadswhen employed, are commonly round; in any eventthere is an overhanging formation or shoulder extcriorly at the upper end of the shade, which formation precludes an ordinary threaded connection. for which reason set screws or sliding: clanip devices of various forms are usually employed to bind the shade to the-holder.

The invention has for an object the production of a holder of the indicated character that will permit of the ready attachment and dctaclnnent of the shade, while obviating the necessity of providing-the holder with any adventitious shade-engaging devices in the way of screws, adjustable clamps, or like movable elements.

Another object of the invention is to so form .the holder that it will etlect a close contact between the lower edge of the-holder and the opposed surface of the shade, so

that neither dust nor insectswill enter, a

result which is of prime importance in the case of lamp-inclosing shades or gl0bes.

The invention involves a special form of shade-engaging flange on the'holder, which combines in, a novel manner with the shade, to bring about aparticular'co-action and correlation between the holder and the Specification of Letters Patent.

Application filed March 19, 1912.

Serial No. 684,713.

flanged or beaded shade, to the end that the holder and said shade will be capable of a Reference is to be had to the accompanyin drawin s formin a art of this s eci- Patented May 28,1912.

fication. in which similar characters of ref-- crence indicate corresponding parts in all the views.

Figure 1 isan elevation showingmy improvedholder in connection with a lamp socket and shade; Fig. 2 is a similar view with my improved shade holder ahd parts of the socket and shade in section; Fig. shows my improved holder in section, except at the upper end, which is in side elevation; and Fig. 4 is a developed view of the lower portion of the holder.

The holder comprises a body 10, desirably Off round form, and having at its upper end any suitable means 11 for connection with the shell of the lamp socket l2, andformed at the lower end with a depending flange or neck 13, the lower edge 1.4 of which, when the shade 1:3 is in place, has close contact with the opposed surface of said shade. The dcvice l'l for connecting the holderto the lamp socket is of known form and need not be described. It is to he understood that in practice, the height of the body 10, or its distance between the flange 13 and the top of the holder is such that the socket may receive a lamp in the usual manner.

My invention resides in the novel fealures characterizing the neck or annular flange 13. which I form with an interior shoulder 20. and leading to said shoulder from the lower end or mouth of the flange or neelt 13. there is a groove 21. .Which, as seen in the developed view, is diagonal to the shoulder 20. and to the lower edge 14, said groove 21 vanishing at the'lower end in the edge 14, and extending: at the upper end through the shoulder 20, as at 22. so that the said shoulder is non-eontinuous. it being only essential that the shoulder present several points in about the same horizontal plane at a point above or inward from the upwardly ranging groove 21. In practice,

the groove 21 is continued for approximately one halfa convolution.

The shade is shown with an outwardly flaring. neck or annular flange 25,- which is a known form of shade, thetlange being of unbroken continuity. The conformation oi the shade, with its flaring flange 25 or the equivalent overl'u-inging exterior head, as in some n'iakes of shades, obviously. precludes the employment of anordinary' threaded connection with co-acting threads on the '.'dicated by dotted lines in Fig. 1. The diameter of the neclr. at. the guide groove 21 relatively to the greatest perimeter of the flaring flange 25 of the shade, is such that the upper edge of the flange 25 will engage at one side in the groov 21, so that by turning the holder 10 and its flange 13 relatively to the shade 15, while maintaining the shade with its axis at an angle as described, the engaging part of the flange of the shade will be guided upv'ardly'in the said groove until the flange escapes from the groove and. can assume a position properly co-axial with the holder 10 after which the vertical dimension of the flange between the horizontal seat or shoulder and the edge 14, is such that the said lower edge will be pressed into close contact with the opposed surface at the shoulder of the shade, while the exterior portion of the flange at the upper cdge will be subjected to a slight up ward pressure by reason of the contact therewith of the shoulder 20.

It is understood that the groove 21 and the shoulder 20 are formed by bending the material constituting the flange 13, and that the said shoulder 20 is not :lormed with points absolutely in the same horizontal plane. Advantageously the formation of the at provided by the shoulder 20 is such to have in etl'cct a slight earn action to press upwardly on the flange 25 of the shade suli'icicntly to tightly press the lower edge 14, which in practice is a feather edge, against the outer surface of the shade as described. i

I To detach the shade from the holder a slight turning and tilting of the shade will bring its axis at an angleto the axis of the holder 10, as when entering, and the shade upon continued turning will be guided lers Patent,--

the horizontal seat of theholder.

2.1K shade-holder having a depending following the. groove 22 downward. vThe mouth of the holder defined by the feat-her edge 14; is for the most part flaring, which facilitates the entrance of the shade to the inouth'of the holder and permits the tilting of the shade to engage a side thereof in the guide groove. I

Having thus described my invention, I claim as new, and desire to secure by Let- 1. The combination with a shade having an. attaching neck formed with an exterior annular overhanging portion'at its upper end, of a shade-holder having a depending flange presenting an openmouth, the edgeof the flange defining the mouth being flar- 1ng for a portion of said edge, a substantially horizontal shoulder on said flange ata point within the mouth and againstwhich the overhanging member of the neck may seat .with the shadecoaxial with the holder,

the said depending flange having a guide,

groove forming approximately one-half a convolution, the said groove extending at its upper end to and through the mentioned shoulder and vanishing at its lower end at the mouth of the tlangethe said groove of the holder flange and the annular overhanging upper edge of the shade being so proportioned that the overhanging edge of the shade will engage at one side in the. mentioned groove with the axis of the shade at an angle to the holder, and the shade and holder being capable. of relative turning movement with the axes at an angle, the overhanging annular edge of the shade furthermore fitting the seat on the depending flange and the edge of the said flange coacting with the exterior surface ofthe'shade' when the overhanging edge isinoved onto flange formed at its mouth with an edge flaring for a portion of the circumference, a substantially horizontal shoulder within the mouth and against which the overha'ng- I ing edge of a shade may seat itself with he shade and shoulder CEO-itXlfll, the said dopcnding flange of the'holdez'. having a guide groove for approximately one-half a con 'vol'ution, and the said groove extendin from the mouth of the flange to an through thementioned shoulder.

A means for securing to a lamp socket niouthed flange formed with a substantially horizontal interior shoulder inward from the mouth and against which the overhang ing edge of a. shade may seat, the said flange having an edge to contact tightly with the exterior surface of the shade, when the overhanging edge of the shade seats against said a shade having an overhanging member disinterior shoulder, the said flange fut-thew nzune to this specification in the presence of more havmg a gulde groove maklng aptwo subscrlblng wltnesses. proxlmately one-half a convolutlon from 1 v I v J w 1 i the edge to the said shoulder and, a height HLIMMAB 1 ALMEL' '5 to permit tilting and turning of the shade \Vitnesses:

felatively to the holder. J. A. JOHNSTON,

In testimo y whereof I have signed my W. DEWAR GORDON.

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