US1906770A - Electric fixture and mounting therefor - Google Patents

Description

May 2, 1933. M. N. RUSSELL ELECTRIC FIXTURE AND MOUNTING THEREFOR Filed Aug. 26, 1927 Swan W01, f I ZMMZ 3%% awry/W m Patented May 2, 1933 UNITED STATES PATENT OFFICE MARK 1v. RUSSELL; or SYRACUSE, NEW YORK, essren'on TO PASS &. sn

SYRACUSE, NEW YORK, A coRronArIoN or new YoRK Ynotm, mo, or

Enteritis alarms AND MOUNTING THEREFOR Application filed August 2a, 1927. Serial No. 215,722.

This invention relates to electric fixtures and more particularly to that type of fixture adapted to be mounted with its canopy directly against the surface of a wall.

It isa general object of the present invention to provide a novel and improved type of lighting fixture and mounting means therefor. I

More particularly it is an object of the present invention to provide a lighting fixture having'a Canopy which is held in place against the wall by a ring engaging the screw shell of the lamp receptacle, which re'ceptacleis adjustably supported from a fixture stud in a suitable outlet box.

One of the features'of the invention cont prises an elongated screw adapted to be secured in an adjustable manner to a thimble removably attached to a fixture stud.

Other and further objects and features of the invention will be more apparent to those skilled in the art from a consideration of the accompanying drawing and following specification wherein is disclosed a single exem- 2 5 plary embodiment of the invention with the understanding, however, that various changes may be made therein, such as fall within the scope of the appended claims,

without departing from the spirit of the invention.

In said drawing:

Figure 1 is a side elevation of a fixture and mounting means constructed according to' the present invention;

Figure 2 is a vertical section through the same,- showing the fixture mounted against a wall and supported from a conventional outlet box.

Figure 3 is a rear elevation of the fixture 46 with the supporting screw sectioned on line 3-3 of Fig. 2; and

Figure 4 is an enlarged detail view of the stirrup and it's mode of attachment to the receptacle.

Various means have been suggested for mounting wall brackets and like electric fixtures, but most of these means require an excessive number of; parts and operations 7 for the mounting and are not universally 56' ada atable to' standard. fittings. The present invention contemplates a provision of a simple form of bracket and means for mounting the same in a standard outlet box provided with the conventional fixture stud in the bottom thereof. Means are provided for a simple adjustment of the mounting to take care of varying depths of outlet box and irregular positioning of the same in respect to the surface of the Wall. v

Referring to the drawing, there is shown at 10 a canopy formed of any suitable inaterial, here shown, by way of example only, as being molded from such vitreous material as porcelain, and adapted to have its base 11 abuttd against the Outer surface is of a an or ceiling. The canopy is adapted to house a lamp receptacle l8'and to hide the opening of'the outlet box 14, which prorides means for introducing the necessary 1 conductors. The box 14, as disclosed in Fig. 2' is provided with the conventional plaster ring 15 and is held in position in the wall in any of the well-known wa s. It is provided at the bottom with a fixture stud l6 boltedthereto by meansjof the'bolt's 17 As shown in Fig. 2, the stud is hollow, althongh this is not necessary for the practicing of the present invention.

The receptacle which may be of any convent-renal type, either key'les's or of the chain pull style, is here shown as including the ewe spacedinsulating buttons 18 and 19 between which the switch mechanism is located. The upper button 18 carries t1'1e,.s=ciew shell 20 which receives the lamp. This screw shell is adapted to pass through the central open ing 21 in the front of the canopy. The 1 per button 1 8 then abuts against the shoulder 22',- forined bythe counter bore 23 in the canopy. A suitable ring 24, preferably of molded material, is adapted to be engaged over the threads on the outer surface of the screw shell 20 to form a complete composite structure, and to hold the receptacle tightly within the canopy, clamped between the shoulder and the ring 24, which has been shown in the present instance as a shade supporting ring. In this assembled form the device may be shipped and sold.

I order that the whole fix ure m y be.

conveniently supported from the fixture stud in the outlet box, the receptacle is provided with the elon ted mounting screw 25 projecting rearwar ly therefrom. Convenlently this screw 25 is attached to the rear face of the upper button 18 by means of the stirrup 26 formed of a strap of sheet metal bent to the shape shown in Fi 4 and having its inturned ends 2-7 secure to the under surface of the upper button 18 by means of suitable fastening means, such as the screws 28. The screw 25 is rigidly and non-rotatabl secured to the center of the stirrup by being swaged, welded, or the like, as shown at 30.

For the purpose of attaching the screw 25 in an ad'ustable manner to the fixture stud 16, a t imble 31 is provided, internally threaded to be received over the fixture stud and held thereon, and having its end 32 drilled and tapped, as at 33 to engage the threads on the screw 25.

In order to mount a fixture of the type above described, the thimble 31 is applied to the fixture stud and securely tightened thereon. The fixture is disassem led into its three parts 10, 13 and 24 and the screw 25 is threaded into the opening 33 in the thimble to such a distance that the canopy can be mounted over the receptacle with a slight clearance between the shoulder 22 and the front face of the button 18. After the roper spacing has been determined, the ock nut 35 on the screw 25 is tightened against the outer face of the end 32 of the thimble to lock the screw 25 in position. After wiring the fixture, the canopy is then slipped into position and secured against the wall by threading the ring 24 onto the screw shell 22. It will be seen that the clearance allowed between the shoulder 22 and the upper button 18 will permit the tight clamping of the canopy against the wall, when the ring 24 is screwed into position, so that it is assured against undesirable movement.

The screw 25 may be made of sufiicient length to take care of any contingencies existing in the depth of the box and its location in the wall and in cases where it is too long it may readily be cut off to the proper length before mounting the fixture. Ordinarily any extra len h of the screw is accommodated in the ollow of the fixture stud. Where, however, such stud is solid, the screw must be cut to substantially the exact required length.

The present form of mounting has the added advantage that the receptacle is securely held in position while it is being wired. The form of convenience outlet shown 'as applied to the canopy can be removed by taking out the screw 37 so that the outlet can also be wired before assembling the fixture and thus without the inconvenience of the canopy hanging on to the same. Thereafter the canopy can be placed partially in position and the screw 37 reinserted to support the convenience outlet. The ring 24 can then be applied to complete the1 application of the whole fixture to the we 1.

It may be noted that the upper button 18 of the receptacle is non-circular in plan in order that it ma fit in a correspondingly shaped recess in the canopy to insure against rotation of the canopy, and further to insure a proper positioning of the pull chain guide on the rece tacle in respect to the chain opening in t e canopy.

Having thus described the invention what is claimed as new and desired to be secured by Letters Patent is:

1. In a lighting fixture adapted to be supture stud therein, in combination, a lamp receptacle including a portion formed of insulating material, a stirrup secured to said portion, a screw rigidly secured to said stirported adjacent an outlet box having a fixrup and extending rearwardly from said receptacle, a thimble adapted to be screwed over said stud and having a threaded opening adapted to receive said screw, a lock nut to secure said receptacle in adjusted relation to said outlet box, a canopy adapted to fit over said receptacle and means adapted to engage the receptacle and canopy to retain the canopy in osition.

2. A receptacle or lighting fixtures including in combination, an insulating button, a screw shell secured to one face thereof, a stirrup having its ends rigidly secured to the opposite face of said button and a mounting screw permanently secured near the center of said stirrup.

3. A receptacle for lighting fixtures including in combination, an insulating button, a screw shell secured to one face thereof, a stirrup having its ends rigidly secured to the opposite face of said button and a mounting screw permanently secured to said stirrup and extending away from said button and axially of said screw shell.

4. In a lighting fixture adapted to be supported over an outlet box having a fixture stud therein, in combination, a lamp receptacle including a screw shell, a screw rigidly secured to and extending from the rear of said receptacle, a thimble adapted to be socured to said stud and provided with a threaded opening to adjustably receive said screw, a canopy adapted to fit over the receptacle and. engage the wall, and means threaded onto the screw shell to press the canopy against the wall.

5. In a lighting fixture adapted to be supported over an outlet box having a fixture stud therein, in combination, a lamp receptacle including an insulating button supporting a screw shell, a stirrup rigidly secured to said button, a screw rigidly secured to said stirrup and extending rearwardly from the button, a thimble adapted to be secured to said stud and having a threaded opening to receive said screw, a canopy adapted to fit over said receptacle and means threaded onto the screw shell to engage the canopy and press it against the wall.

6. A receptacle for lighting fixtures, including in combination, an insulating button, a screw shell secured to one face thereof, a second insulating button spaced rearwardly from the first, switch mechanism housed between said buttons, a stirrup straddling the second button and secured to the first button and a mounting screw secured to the stirrup and extending axially rearward from the buttons.

In testimony whereof I hereunto affix my signature.

MARK N. RUSSELL.

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