US1225397A - Shade-supporting device. - Google Patents

Description

H, B. 'GEMINI/IIN.

SHADE SUPPORTING @EI/ICE.

APPLICATION FILED .II-UV. 22x ISIS. l C, Faented Ifagf 1917.

R. B. BENIN/HN.

SHADE .SUPPORTING DEVICE.

APPLicATloN FILED No`v.22. i913.

Patened May 8, WU

2 SHEETS-SHEET 2.

.REUBE'T E. BENJATEN, OF CHICAGO, LLINOS, ASSIGNOR TO BENJALLN ELECTRIC BEAN'UFACTURNG COMPANY, OF CHICAGO, ICLLINOES, A CORFORLTION OF XLLNOIS.

Application filed November 22, 1913.

T all lio/iom I? 'infn/concern.'

Be it known that l, HEBBEN B. BENJA- MIX, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful improvements in Shade-Supporting Devices, of which the following is a full, clear,4

concise, and eXact description, reference being had to the accompanying drawing, forming a part of this specification. I

My invention pertains to shade supporting devices for use in connection with electric lamp sockets and it is the principal object of my invention to improve upon the cX- isting forms of such devices. lt is a furtherjobject of my invention to provide a shade support that can readily and quickly be placed on a socket, in a position for use, or removed therefrom, as desired; and that is economical to manufacture, easily assembled and efhcient in use. Additional objects and advantages ofthe invention will be ap-v parent from' the following specification, taken in connection with the appended claims.

A shade supporting device constructed in accordance with my invention, l have disclosed, by way of example, in the following description and accompanying drawings, in which:

Figure 1 is a side elevation showing a shade supporting device constructed in ac cordance with my invention attached to a lamp socket, the shade being shown incross section;

Fig. 2 is an enlarged cross sectional view taken on the line 2 2 of Fig. 1, looking in the direction of the arrows;

Fig. 3 is a cross sectional view taken on the e@ line 3 3 of Fig. 2, looking in the direction of the arrows, showing the cam ring in open position;

Fig. 4 is a similar view, showing the .cam ring in locking position;

F ig. 5 is a plan of the shade supporting device from below;

Fig. is a detail elevation showing one of the spring tongues; `and Fig. 7 is a detail section on the line 7-7 of 59 Fig. 5, looking'in the direction of the arrows.

Like reference characters refer to like parts throughout the followingv specification and the several figures of the accompanying 55 drawings.

Specification of Letters Patent.

SHADE-SUPPORTING DEVCE.

Emittent-ed 8, 191i.

semi no. 802,507.

Referring now to the drawings, 8 designates a shade supporting ring adapted to be attached to a lamp socket 9 having a bead 10. rFhe supporting ring S has a number, in this case four, of lugs 11 spaced about its periphery. yThese lugs 11 are adapted to pass through slots l2 in the' shade 9a whereupon they are crimped down over the shade, as shown in Fig. 1, thereby holding the shade in place.

Formed integral with the supporting ring S, so as to extend upwardly therefrom, are a plurality of spring tongues 13. ln the .construction shown in the drawings there are three of these spring tongues. Each of the spring tongues 13 is bent so as to form a groove 1st near its upper end, Vthe groove 14 conforming in shape to the bead of the lamp socket. J ust below the groove 14 the metal of the spring tongues 13 is struck inwardly to form a projection 15. By means of the groove 14 and projection 15 it will be seen that the tongues 13 will embrace the bead 10 when the device is placed on the socket. The upper ends of the spring tongues 13 are bent outwardly to form horizontal lugs 16.

Rotatably niounted on the shade supporting member 8 and embraced by the-lugs 16 is a ring 17, for effecting the movement of the tongues 13 into supporting position. The upper part of the ring 17 is bent over in wardly to form a ange 18. lll`he inner edge of the flange 18 is cut so as to form a plurality of spiral cam portions 19. rlhe number of cam portions corresponds to the number of spring tongues, so that in the embodiment of my invention here described there are three of these cam portions. rllhe ring 17 is of such dimensions that when mounted upon the supporting member 8 the cam portions may be made to engage projections 20 formed on the spring tongues 13. lt will be seen that when tha ring 17 is rotated in a contra-clockwise direction the cam portions 19 will force the tongues 13 inward; whereas, when the ring 17 is rotated in a clockwise direction, the tongues-13 will 'be permitted to move outwardly by reason of their resiliency. @ne of the cam portions 19 is cut to form a plurality of detents 21 correspondingv in size to the projection 2O on the tongue 13. lt will be seen that the engagement of these detents 21 with the projection 2O will serve to hold the ring 17 in any posiwith an outwardly flaring flange 23. Beare the ring 17 in such position that it strikes aV lug on the supporting member, hereinafter to be described, when the ring 17 is at the extreme open or extreme locked position.

The ring 17 is formed at its lower e'dge ing on this flange 23, thereby holding the ring 17 in place, are a plurality of upwardly extending` lugs 24 formed integral with the supporting member S.' This method of construction forms a very simple and economical mode of mounting the ring rotatably on the supporting member. These lugs 24 are the lugs above mentioned againstwhich the stop 22 strikes to limit the rotation of the ring.

It will be seen that this shade supporting device comprises a two piece structure so that it is not only extremely economical to manufacture but in additionl it is very readily assembled. The flange 18 of the ring 17 is cut away, as at 25, at points to correspond with tlie lugs 16 of the tongues 1?). To assemble the two parts, the lugs 241 being'- comparatively straight, so as to escape the liange 23, the' ring 17 is slipped onto the member 8. The lugs 24k are then bent inwardly to engage the iiange 23 and the device is' ready for use.` ,n In the use of the device the ring is turned in a clockwise direction until it is in the open position, illustrated in Fig. 3.41m this position of the parts the tongues are in their eXtreme outward position and the device may readily be placed'on the socket. ABy virtue of the grooves 14 and the projections 15, the tongues 13 embrace the bead 10 of the socket and the device is held in place thereby. To clamp it securely in supportling position the ring 17 is then turned in a contrasclockwise direction and the cam portions 19 coming into engagement with the projections 20 force thetongues 13 inwardly until the device is firmly secured in place. As before mentioned the engagement of the detents 21 with the projection 20 holds the ring in the position to which it is rotated. To remove the device it is only necessary to rotate the ring in a clockwise direction so that the cam portions will be moved away from thetongues 13 and permit the latter to spring outward, whereupon the device may be readily pulled off the socket.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. r1`he combination with a lamp socket having a bead, of a shade supporting device including a shade supporting member, a plurality of spring tongues formed thereon and adapted to embrace said bead, a rotatable ring having a plurality of spiral cams thereon adapted to engage said tongue and :torce them against the bead when the ring is rocams adapted to be brought into engagement with said spring-tongues to press the same against said bead when the ring is rotated.

3. The combination with a lamp socket having a bead, of a two piece shade supporting device including a shade supporting member having thereon a' plurality of spring-tongues, said tongues having longitudinal grooves formed therein and vertically struck-in portions below said grooves, whereby said tongues embrace said bead, a rotatable ring mounted on said supporting member and having on its upper edge a pluralityI of spiral cams adapted to be brought into engagement with said spring-tongues to press the same against said bead when said ring is rotated.

al. The combination with a lamp socket having a bead, of a shade supporting de* including a. shade supporting member, a plurality of spring-tongues formed thereon and adapted to embrace said bead, a rotatable ring having a plurality of spiral cams thereonb` adapted to engage said tongues and forcethem against the bead when the ring is rotated, said tongues having a portion bent outward to embrace said ring, and a plurality of iexible members on said supporting member adapted to be bent into engagement with said ring to hold'the same in place.

5. The combination 'with a lamp socket having a bead, of a shade supporting device including a shade supporting member, a plurality of spring-tongues on said member and adapted to embrace said bead, a rotatable ring having a plurality of spiral cams thereon adapted to engage said tongues and force them against the bead when the ring is rotated, said tongues having a portion bent outward to embrace said ring, a plurality of lugs on 'said supporting member' bearing on said ring to retain the same in place, and a stop on said ring adapted to engage said lugs to limit the extent of rotation of the ring.

6. In a shade supporting device, the combination with a lamp socket having a bead, of a shade supporting member having connected therewith a plurality of upwardly extending spring-tongues, said tongues having grooves formed therein whereby the tongues embrace saidbead, Aflanges formed on the upper ends of said tongues, a rotatable ring embraced beneath said flanges, a plurality of spiral cams on said ring engaging said tongues tated, and a plurality of lugs on said shade supporting member for retaining said ring in place.

7. In a device of the class described a shade, and means for securing said shade to a socket comprising a plurality of upwardly extending spring tongues `for bearing on said socket 'and having free upper ends,

and means for forcing the upper ends of said tongues inwardly comprising a cam ring of sheet material having spiral cam portions for acting on said spring tongues, and a thumb ring for rotating said cam portions, said cam Aportions being formed on an edge ofsaid sheet material, and said thumb ring being formed integral with said cam portions and extending downwardly therefrom and surrounding said spring tongues.

8. In a device of the class described a shade, and means for securing said shade to a socket comprising a plurality of upwardly extending spring tongues for bearing on said socket and having free upper ends, and means for'forcing the upper ends of said tongues inwardly comprising a cam thumb ring being formed integral with said cam portions and surrounding said spring tongues.

9. In a device of the class described a shade, and means Jfor securing said shade to a socket comprising a plurality of upwardly extending spring tongues for bear,- ing on said socket and having free upper ends, and means for forcing the upper ends of said tongues inwardly comprising a cam ring of sheet material having spiral cam portions for acting on said spring tongues, and a thumb ring for rotating said cam portions, said cam portions being formed on an edge of said sheet material, and said thumb ring being Jformed integral with said cam portions and surrounding said spring tongues, said cam portions lying substantially in a common plane.

In witness whereof, I have hereunto subscribed my name in the presence of two witnesses:

REUBEN B. BENJAMIN.

Witnesses:

E. R. KING, ILMONROE HUMASON.

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