US1760978A

US1760978A - Holder for lamp housings

Info

Publication number: US1760978A
Application number: US174136A
Authority: US
Inventors: Ralph W Erskine
Original assignee: Westinghouse Electric and Manufacturing Co
Current assignee: CBS Corp
Priority date: 1927-03-10
Filing date: 1927-03-10
Publication date: 1930-06-03
Anticipated expiration: 1947-06-03

Description

June 3, 1930. R. w. ERSKINE 1,760,978

HOLDER FOR LAMP HOUSINGS Filed March 10, 1927 l2 1/ a 2/ I7 2 i H WITNESSES: INVENTOR Ralph 14 Ens/fine Patented June 3, 1930 I WH AT are RALPH w. ERSKINE, or MISHAWAKA,.IN.'DIA1\TA, Asisrenon To wnsrinenousn mac-- TRIO & MANUFACTURING oolvireivv, A CORPORATION or rnn'nsr lvnnm HOLDER FOR- LAM? HOUSINGS Application filed March 10,

My invention has reference to, lighting fixtures and particularly to holders for securing globes and canopies of lighting fixtures to, I standards. 7

An objectlof my invention is to provide a rugged holder which'will prevent or greatly reduce breakage of the glass parts of the lighting fixture. a

Another object of my invention is to provide alightingfixture which shall be'readily' accessiblefor 'cleaningand in which the canopy andglobe may be removed without disassembling any oat the metal parts.

Another object of myinvention is: to pro- 7 vide a devicein which no setqscrews or gripping devices are needed on the globe flanges in order to keep the globe in place.

Another object ofmy invention is to provide means for so combiningthe canopy with the globe and the'glob'e with thebase that they Will shed Water. r a n a Further advantages of my invention will become apparent in the following description of the construction of; the device which em-, bodies it. a

Lamp housings generally consist ot a globe and a canopy. The globes are fastened to the base my means of set screwsor other grips on the lower globe flange. The canopy is then attached to the globe by other holders or I grips. It is apparenttha-t a high winder other sudden strain on the canopy will subject the globe to an excessive tensile stress at the neck of the, globe just above the bottom flange a i g My invention is intended to provide a struc-- turesuch that the globe will be firmly sea-ted v I on its baseand-will form a unitary structure which may be readily disassembled. Y

My invention may best be. explained by ref-- erence to the accompanying drawings, the single figure of which is a view, partially in front elevation and partially in cross section, of a globe and globe holder embodying it.

A; globe holder ring or base 1 is provided with a collar 9 which is adapted to be mounted in cooperative relation with the upper end of a lamp post. A socket support strap 2 is fastened to the base 1, and a lamp socket 3, in which a lamp 4 is mounted, is attached an. e1'ial'N0. 174,136.

thereto. The holder ring is provided with a plurality ofdouble side rods 5 which are adapted to cooperatively engage the holder ring around its periphery, and the rods are held in place by headless set screws 6. The

siderods 5 severally comprise two legs which serverto impart strength and rigidity and are spaced'iapart sufliciently tointerpose a mini mum degree of obstruction to the light rays emanating from the lamp 4. A globe 7 "is mounted on felt washers 8 in the base-1, inside oi the upstruck members,

A metal ringll having a rim of S-shape,

in cross section, is mounted on the upper fiange 19 ofthe globe. The ring 11 isoffupper'inner edge adapted to fit the upper 12, is inountedfl As the-outer edge of the ring is lower than theinnerz'edge, the ring actsas a water shed to prevent moisture f'ronr entering the globe;

The-globe 7- and the canopy l2 areclamped in place by meansof a structure attached to "set: and provides a yielding flange 24 at its flange 19 of the globe, and a shoulder 25ati'ts lowerouteredge upon which the glass canopy into an opening 20 therein and fastening them v by headlessset screws 14.

The ornamental band is coinposedot four segments, the ends of which abut each'other directly under the. ornamental band plate 13 and aresecured thereto by'rneans 0t screws 23.

A U-shape spring 18 is riveted, by means of a rivet '21, to the upper portion of the orna- 1 mental'band plate, andthe screw 17 which is threaded through the pin-sis, engages the spring 18 in its central portion and forces one end or the spring against the canopy 12. The

lower edge o1 the canopy is provided with a downwardly extending fiange,"and thepres sure of the screw and'spring forces the canopy against the ring 11. I Thus, the pressure of the ring ll is transmitted to the upper V flange 19 of the globe, and the lower flange 22 I of the globe is forced against the fel'twasher 8 and the base 1 to constitute a water-tight oint.

Screws 15 are threaded through the ornamental band plates and project under the ring 11. The purpose of the screws 15 is to prevent falling of the ring 11 and canopy 12 in case of breakage of the globe 7. By loosening the screws 17 and 15, the globe and canopy may be easily removed for cleaning. It is, therefore, unnecessary, when cleaning the globe, to disassemble any of the metal parts of the lighting unit.

Thus, the canopy and globe are held in place by means of a clamp that engages the top, rather than the bottom, flange of the globe. Therefore, all tensile stresses occur in the metal members and only compressive stresses occur in the glass members, with the result that breakage of the globe and canopy is greatly reduced. Since the spring 18 resiliently engages the canopy 12, breakage because of expansion and contraction of the glassware is greatly reduced. Furthermore, the disposition of spring 18 and the ring 11 with respect to each other provides a yielding holder which permits axial adjustment of the globe and canopy.

The globe and canopy are secured in place by the yielding holder consisting of the screws 17 bearing on the canopy 12 through the medium of spring 18. The screws 15 proj ect through the band plate only far enough to engage the ring 11 in case of breakage of the globe 7, but they are not in contact with the globe, and, therefore, the disposition of screws 17 and 15 and the ring 11 is such that the globe and canopy are held securely but yieldinglyand in such manner that dismounting may be easily and quickly accomplished. As the screws do not touch the glass and as no unyielding pressure is brought to bear against the glass portions of the unit, breakage is further reduced.

The joint between canopy and globe is rendered rain-proof as is also the joint between globe and base, as has been previously explained.

Although I have described a specific embodiment of my invention, I do not wish to be limited thereto as modifications thereof may be made Without departing from the spirit and scope of my invention as defined in the appended claims.

I claim as my invention:

1. A lamp housing comprising a globe, a canopy disposed on the globe, a base for supporting the globe, a plurality of uprights on the base, means on said uprights for engaging the canopy, said means comprising a plate and a spring attached to the said plate for yieldingly retaining said canopy and globe in position.

2. A lamp housing comprising a globe, a canopy disposed on the globe, a base for supporting the globe, a plurality of uprights on the base, and means on said uprights for engaging the canopy, said means comprising a plate, and an ornamental band mounted thereon and a spring attached to the said plate for yieldingly pressing the canopy and globe, as a unit, against the base.

3. A lamp housing comprising a globe, a canopy disposed on the globe, a base for supporting theglobe, a plurality of uprights on the base, a band plate on each of said uprights, a curved spring on the inner face of said plate, a thumb screw threaded through said plate for engaging said curved spring, whereby said spring is caused to resiliently engage said canopy, and means for spacing said band plates about the globe.

4. A lamp housing comprising a globe, a canopy disposed on the globe, a base for supporting the globe, a plurality of uprights on the base, means on said uprights for engaging the canopy and for retaining said canopy and globe in position, and a plurality of ornamental band sections attached to the canopy-engaging means for spacing them about the globe.

5. A lamp housing-comprising a globe, a canopy disposed on the globe, a base for supporting the globe, a plurality of uprights on the base plates on said uprights provided With means for engaging the canopy and for retaining said canopy and globe in position, and a plurality of ornamental band sections for spacing said canopy engaging means about the globe, and means on said plates for attaching said sections thereto.

6. A lamp housing including a globe, a

canopy, a base for supporting the globe and canopy, a plurality of uprights disposed around the globe and having removable engagement with the base, plates disposed on the upper ends of the uprights, and a plural ity of ornamental band sections detachably connected to the plates to surround the upper end of the globe.

7. A lamp housing including a globe, a canopy, a base for supporting the globe and canopy, a plurality of uprights severally having spaced-apart legs and disposed around the globe, and plates and an ornamental band disposed on the upper ends of the uprights to surround the upper end of the globe.

In testimony whereof, I have hereunto subscribed my name this third day of March,

RALPH W. ERSKINE.