US2118833A

US2118833A - Lighting fixture

Info

Publication number: US2118833A
Application number: US116531A
Authority: US
Inventors: Arras George
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-12-18
Filing date: 1936-12-18
Publication date: 1938-05-31
Anticipated expiration: 1955-05-31

Description

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31, 19. ARRAS I LIGHTING FIXTURE Filed Dec. 18, 1956 Patented May 31, 1938 UNITED STATES 8 Claims.

This invention relates in general to an electric lighting fixture and has more particular reference to a combined socket and shadesupport.

An important object of the inventionis in the provision of a combined socket and shade support which is simple in construction and operation, in which the same fastening means is: operative both to attach the socket and shade in position and to release the shade for disengagement or removal without releasing the socket.

A further object of the invention is in .the provision of an improved. yielding support for a socket in which the socket. is easily and quickly removed or disengaged from its normal lamp supporting position in a holder.

A still further object of the invention. is in the provision of fastening means inserted at the-sides of a holder for releasably clamping a-shade in position and for also supporting a socket in the 20. holder. 1 x:

Otherobjects of the invention will appear hereinai'ter, the preferred structures being shown in the accompanying drawing in which Fig. 1 is a side elevation of a fixture'with a support and an angle. shadein accordance with the principles of this invention r Y Fig. 2 is an enlarged sectional-view! of the holder and supporting means taken on the line 2-2 of Fig. 1;

Fig. 3 is a sectional view taken .on' the line 33 of Fig 2;

Fig. 4 is a view partly in section astaken on the line 4--4 of Fig". 2;

Fig. 5 is a sectional view'similar to Fig; 3; of a 3-3 modification; and

Fig. 6 is a view partlyin section as taken on'the line 6-601 Fig. 5.

In an electric fixture the-common arrangement and construction is to provide a cap or holder usually threaded in position at the'end of a pipe or other support, to attach a socket in this holder by means of screws inserted through the socket, and to separately attach a'sl'iadeto the holder by other. fastening. means: If the socket fastening screws are insertedthrough the bottom they are diificult .of access and; the screws are not easily engaged with corresponding threaded. portions insthe holder; or if thief-fastening screws extend through projections-at the sides of the socket, these projections are easily broken or damaged by thexinsertion of the fastening means.

Inzthe present invention all these difliculties are overcome, it is unnecessary to providelthreaded holesin theholder, andthe fastening-screws or other means are easily engaged orinserted from the sides of the holder and are not threaded into the holder itself. I

' Referring now morep'articularly to the drawing; a' supporting cap or holder H! has a threaded opening, usually at the upper end,'for receiving a supporting pipe [I with a depending'bottom flange and one or more offset shouldered portions I3'and I4.- Of these shouldered portions the latter provides an abutment for the upper end of w a lamp socket l5 and the upper shoulderedportion l3 provides a space for accommodating conductor wires I6 which are attached to the terminals l1 and E8 of the lamp socket in a well known manner. I i 15 The socket is-adapted to receive an electric lamp l9 and has a flange or base extension 2t! of a sizeto be received by the shouldered portion M with recesses 2| at the inner or upper sides to seatopposite compressed springs '22 which are adapted to bear against the shouldered portion I4. I l

A shade holder or reflector 23- has areduced supporting neck 24 with a flange 25 at its upper end and adapted to fit within the'flange l2 of the holder. A gasket or washer 26 is preferably inserted between the flange 25 and a shoulder 21 within the flange ofthe holder for preventing damage to the flange of the shade holder and the inner opening 28 of the shade holder may therefore be of such a size that the socket l5 with its flange 20 maybe inserted through the opening '28.

At opposite sides ofthe holder l0 are clamping plates 30, each of a length to fit against the shoulder M at its inner end and beyond the shoulder 21 at'the outer end. Theouter end of each clamp has an outwardly extending curved rim or projection 3[ adapted to engage below or within the opening 28 of the holder 24 and against the inner edge of the flange 25. Intermediate the v threading the screw inwardly the clamping plate 30 is drawn outwardly into engagement-with the flange 25 of the shade holder. Each fastening screw 33 is sufficient in length to extend beyond the plate and at the outer side of the flange-20 of the socket when it is inserted in the holder 5 against the shoulder Mwith the springs 22 par tially compressed. By pressing the socket in ward and slightly compressing the springs '22 the ends of the screws 33 will engage over'the: outer faces ofthe flange 20, thereby confining-the 5-5 socket in the holder and yieldingly supporting it by means of the springs 22. Thus the same screws which bind the shade holder in place may be extended to releasably lock the socket in place and the socket is yieldingly supported in the holder by the springs.

In order to accommodate the clamping plates at the sides of the socket, recesses 35 are provided of the length or arcuate extent of the plates 30, and near ,the center is a further recess 36 for accommodating the inner end of each screw 33 and allowing the flange 20 to pass the end of the screw without withdrawing the screw entirely from or flush with the inner surface of the clamping plate 30. The inner end 31 of each fastening screw 33 may be slightly upset or the threads damaged after their insertion through the plates 30 so that they are not easily withdrawn through the plates after once being placed within the holder ID.

The above structure is somewhat yielding in one direction to flexibly support the socket and a lamp held thereby, and in the structure shown by Figs. 5 and 6 the socket lsmade more flexible by providing opposite recesses 40in the flange of the socket, each of which has a leaf spring 4| extending thereover and secured-by a fastening screw 42 atone side of the recessso that the other end will be free to flex in the recess. The lower or outer face of this leaf spring is engaged by the inner end of the fastening screw 33 for retaining the socket in position but permitting a more flexible movement of the socket in the holder and thus protecting the lamp carried by the socket against vibration. In this form, as in the other, the socket is retained in place by the same screws which bind the reflector support in place and the springs 22 tend topress the socket outwardly from the holder. The socket is thus flexibly supported within the holder by the springs 22 at one side and by the leaf springs tended to hold the socket in place.

M at the other side.

In both forms as shown, the inner ends of the same screws which are inserted through the shade or reflector clamping plates 30 are ex- In order to remove the reflector or shade holder from the holder II] it is necessary only to back off the screws 32 a slight distance, releasing the clamping plates which have a sufficient movement be-.

tween their inner ends and the recesses 35 of the socket to give them a slight freedom of movement, such that the inner flange 25 of the shade holder 24 may be disengaged from the clamping plates for bodily removing the shade holder. A continued releasing movement of one or both of the fastening screws 33 will free one or both sides of the socket I5 so that the edge recess36 will slip by the inner end of one of the screws 33,

By having the fastening screws 33 inserted from the sides they are easily accessible, no difficulty is experienced in inserting fastening screws through the socket and into the holder, and it is not necessary to provide the holder with threaded openings, for engaging the fastening screws.

.Various changes in structure maybe made without departing from the spirit and scope of the invention. For example this structure al though described in connection with a socket having a projecting base flange, may also be applied to a larger socket in which the ends of the screws 33 engage in opposite recesses in the socket itself.

I claim:

1. In a lighting fixture, a support, a shade holder having a flange extending into the support, a lamp socket inserted in the support, a clamping plate within the support having an outer projection to engage the flange of the shade holder, and fastening means inserted through the support and the clamping plate for binding the shade holder in place, the inner end of the fastening means also engaging the socket for confining it within the holder.

2. In a lighting fixture, a support, a lamp socket inserted in the support, a shade holder surrounding the lamp socket and having an inwardly extending flange at its upper end, opposite clamping plates inserted between a socket and a support, and having an outer projection to engage the flange of the shade holder, and fastening screws inserted through the sides of the support threaded through the clamping plates and engaging the socket to confine both the socket and the shade holder within the support.

3. In a lighting fixture, a support, a lamp socket having a base projection and fitting within the support, fastening means for the socket comprising a screw extending loosely through'an opening in the side of the support, a threaded member between the socket and the support through which the screw extends, and the end of the screw engaging the outer side of the projec-- tion the socket for holding it in the support.

4. In a lighting fixture, an internally sh0ul-- dered support, a socket fitting within the support and having springs in the base to fit against a shoulder therein, fastening means inserted through the outer opposite sides of the support and engaging the outer side of the socket so that the springs tend to hold, the socket against the ends of the fastening means.

5. Ina lighting fixture, asupport, a socket having a base flange with recesses at the inner side thereof, springs seated therein but projecting from the surface of the base, fastening means inserted through the opposite edges of the support and adapted to engage the outer base of the flange when the socket is pressed outwardlyfromthe holder by the springs.

6. In a lighting fixture, a support having a proecting edge, a shade holder having a flange seated in the edge of the support with an endopening and an inwardly turned flange, and fastening means for confining the holder within the support comprising a plate with an outwardly extending projection to engage within the flange cf the holder and a screw threaded from the edge of the support into the plate'for drawing the projection outwardly against the flange.

'7. In a lighting fixture, a support, a shade holder to fit within the support having an'open' the inside of the plates engaged by the inner ends of the screws, the shade holder being disengaged by releasing the screws so it can be bodily removed without disengaging and removing the socket from the support.

8. In a lighting fixture, a support, a socket fitting within the support having a projection with recesses at the bottom and also with side recesses, springs within the bottom recesses to abut the inside of the support, leaf springs attached to the socket and overlying the other recesses of the flange, and fastening means. inserted through the edge of the support and in engagement with the leaf springs for holding the socket flexibly between the springs within the support.

GEORGE ARRAS.