US1544281A - Electric fixture - Google Patents

Description

SPRECHE ELECTRIC FIXTURE Filed Jan. 25, 1925 Patented June 30, 1925.

"PATENT OFFICE.

{BE'IER w. SPRECHER, or MILWAUKEE; 'wrsoonsm.

ELEc'rRIc FIX URE.

Application filed January 23, 1925. Serial No; 4,210.

To all whom it may concern;

Be it known that-I, PETER W'. Srnnorrna,

a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of WVisconsin, have invented cer tain new and useful Improvements in Electric Fixtures; and I do hereby declare that the following is a full, clear, and-exact description thereof. L

This invention relates to fixtures.

Objects of this invention are to provide a fixture in which a supporting'strap carried by the hickey may be secured to a canopy. orjceiling collar in a simpleand effective manner without requiring any shaping of the canopy or cam action of the strap, but in which the; canopy and associated parts are directly fca-rried by the socket and may be easily removed or replaced without disturbing the electrical connections.

Further objects are to provide an electrical fixture in which the canopy is auto-' matically grounded when secured to the socket. 1

Further objects are to provide a fixtur which may be removed or replaced by an unskilled operator and which is soconstructed that it is of ornamental and attractive appearance.-

An embodiment of the invention is shown in the accompanying drawings, in which Figure 1 is a sectional View through the fixture.

Figure 2 is a sectional View on. the line 22 of Figure 1.

Referring to the drawings, it will be seen that an outlet box 1 is set with its marginal edges flush with the ceiling 2 and that a hickey 3 is secured by means of bolts or other suitable fasteners within the box.

This hickey is provided with apertures 14;

and 5 for'the passage of the wires and is further provided with a downwardly projecting threaded portion 6. A cap? is screwed upon the downwardly threaded portion and has an outwardly projecting ear 8 provided with a threaded aperture 9.

A U-shaped strap or supporting member is provided which has a transverse portion 10 and upwardly projectingdiverging legs 11 provided with outwardly extending feet 12. An elongated bolt 13 is passed through the transverse portion 10 and is screwed into the threaded aperture 9 thus firmly positionber 20 is also retaine 7 ing the supporting strap with its feet 12 in contact with the ceiling 2.

A socket 14 is provided and is equipped with a U-shaped clip 15 (see Figure 2) which issecured within a recessed portion of the socket by means of a bolt 16, and such recessed portion is filled with any suitable material, as indicated at 17., The upper portion of the clip15 is positioned :above the transverse portionlO of the supporting strap. Preferably, the supporting strap is made of wrought iron or structural steel and is provided with a brass'bushing 18 (see Figure 2). This bushing is provided, with a threaded aperture into whichan attaching screw 19 passes, suchscrew securing the clip 15 in place (see Figure 2). It

is to be noted upon further reference to Figure 2 that a sprin or grounding membeneath the head of the screw'19. Referring to Figure'2, it will be seen that the socket is provided with a threaded shell 21 in the usual manner adapted to receive the lamp. The outer sleeve 22, preferably formed of porcelain or other insulating material is screwed upon. the exterior of the threaded sleeve 21, as shown in Figure 2, and is provided with an enl-ar ed lower portion 23, preferably equippe with a roughened or fluted lower comcal face 24,

as shown in Figure 1. This enlarged portion has a flat .faeeor shoulder 25 on the up er'side of the enlarged portion23. ny suitable type lof canopy or sealing collar member may be employed, and for assembling, the canopy may conveniently be formedof two parts 26 and 27 adapted torespe'ctively contact with the. ceiling 2 and with the shade or lobe 28. These portions tending flanges 29.

In assembling the. device, the cap- 7 is screwed in place and the attaching strap secured by means of the bolt 13, as previously described. The socket is securely held to the'transverse portion of the supporting strap. The canopy is slipped in place, and the outer sleeve 22 is screwed upon the threaded shell 21 of the socket, with the shoulder 25 engaging the under side of the inwardly extending flange 29 of the canopy.

It will be seen, therefore, that no cooperating cam faces need be provided be-' of the canopymay e joined by inwardly extween the supporting strap and the canopy and that no'additional screws, pins or'plun-. gers need be employed for retaining theperfect grounding of the canopy without any attention whatsoever on the part of the electrician.

It is also to be noted that this fixture may be most readily cleaned and that the canopy and globe. may be most easily removed by an unskilled operator without "disturbing any of the'electricai connections. F orfe xample, it is merely necessary to remove the globe 28 and, thereafter, unscrew the outer sleeve 22 by manipulating larged lowenportion 23 thereof,- -'-rthe-.fluted portion 24 on the lower side or part of the sleeve affording a secure grip for the 'ope'r-" ators fingers. The parts may be readily washedor otherwise cleaned and easily re-' placed.

It will thus be seen that a fixture has been provided which may be most easily assembled, in which the exposed parts may be readily taken down for cleaning and'as easily replaced.

Further, it will be seen that there are. no fragile or complicated parts to the fixture but that all of the parts are relatively strong.

While I have shown the plug shell 4 attached to the til-shaped strip 10 by means of a screw 6, I may vary this means of-attachment.

Although the invention has been described in considerable detail, it is to be understood that the invention may be variousl em,-

. bodied and is, therefore, to be limits only as claimed. 7 g

" I claim:

1. An electric fixture-comprising a cap, a

supporting strap having a transverse lower "POItIOII and a pair-of upwardly extending arms adapted to contact with a wall surface,"

a screw extending through said transverse the engaging said canopy.

portion and screwed into said cap', a socket carried by said transverse portlon and having an outer; shell removably screwed. on"

said socket, and a canopy surrounding said supporting strap and held in place by the removable shell of said socket.

2. An electric'fixture comprising a cap, a

supporting strap having a transverse lower portmn and a pair of upwardly extending" arms adapted to contact with a wall surface, f

a screw extehding through said transverse portion and screwed into said cap, a socket carried by said transvrse portion and having an outer shell. rcmovably screwed on said socket, a canopy surrounding said supporting strap and held in place by the removable shell of said socket, and a grounding spring carried by said. strapand adapted to contact with said canopy.

3. An electric fixture comprising a cap,

an inverted U-shaped strap having outwardly extending feet positioned upon op posite sides oi. said ca an elongated screw passing through said strap and screwed into said cap, a socket secured to the lower portion'o'f said strap and having an externally threaded portion, a canopy surrounding said strap and socket and having an. inturned flange, and an internally threaded sleeve screwed upon said socket and having an outwardly extendiilg flange engaging the flange of said canopy and holding said canopy in. place. I

4:. An electric fixture comprising a cap, an inverted U-shaped strap having outwardly extending feet positioned upon opposits sides of said'cap, an. elongated screw passing through said strap and screwed into said cap, a socket secured to the lower por tion of said strapand having an externally strap and socket and having an inturned flange, an internally threaded insulating sleeve screwed upon said socket and having an outwardly extending flan e engaging the flange of said canopy and holding said canopy in place, and a grounding spring secured to said strap and frictionally en- In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of Wisconsin.

Paras w. SPRECHER threaded portion,- a canopy surrounding said

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