US1714002A - Lamp bracket - Google Patents

Description

May 21, 1929. M. F. DEACH I .09

' LAMP BRACKET Filed July 16, 1924 lfivcrib r 666 I. 1760671,;

Patented May 21, 1929.

. UNITED STA MILES'FRANK BEACH, OFHOAKLANDV, CALIFORNIA.

LAMP BRACKET. 1

Application filed July 1 My invention relates to that class of brackets which are used forholding lamps, such as desk lamps or reading lamps, or

work shop lamps, and the object of the invention is to provide a lamp bracket that may be readily adjusted to almostany piece of furniture, bench or the walland permit any adjustment desired suiting the conven-.

ience of the user without necessarily having to reclamp the bracket after it is once set in place.

Reference will be had to the accompanying drawings, of which Figure 1' is an elevation of the bracket when the same is applied to a wall fastening. Figure 2 is a transverse section on line 22 of Figure 1. Figure 3 shows a modified form of the invention adapted to be fastened to a table or horizontal surface. Figure 4 is a front elevation of the supporting discs for the lamp rod or tube looking at the edge of the discs.

Figure 5 is a rear elevation of the supporting discs. Figure 6 is a front elevation ing a similar View to Figure 4.

The lamp to be held by my bracket is fixed into a socket 2, being the ordinary electric light socket and is provided with a desuitable type desired fleeting shade 1 of any for a'lamp of this sort.

The lamp socket 2 is secured onto a hollow rod or pipe 3, which carries on its inside the flexible electric light cable 4. The rod is supported and held by some supporting discs 5, through which the rod 3 is threaded through an aperture 6 (see Figure 2) made by cutting out a portion of each disc, and

these discs are clamped together by a bolt 7 passing through some flanges 8 of a swivel block 9. The bolt 7 has threaded upon one end a spring 10, held in place by a cotter pin 11 and the parts are assembled together under pressure, or rather compression of the spring 10 so that after the cotter pin 11 is'in place the two disc pieces 5 are held under a constant'tension in supporting relationship onto the rod 3.

The supporting discs 5 are made in two pieces being stamped out of suitable blanks and the seam betweenthetwo is indicated by '12. After the blanks are made this scam 12. may be welded if desired into a unitary block making one block out of what is shown as two. pieces '5 in the figures. These blocks 5 are rovided with annular friction bearing surFaces or checks 57 developed by the recessed portions 58.

through its 1924. Serial No. 726,399

. he apertures 6, as indicated in Fig. 2,

is made egg shaped as'showni'n Figs. 4, '5 and 6, the front or lamp side beingindicated by 59 in Fig. 4 has the narrow portion on the bottom, andon the rear or electric wire through which the lamp rod 3 is threaded,

side 60, see Fig. 5, the narrow portion of the 7 egg shaped aperture is at the top.

The lamp end being always heavier than the electric cord side, the rod 3'will alwaysbear down on the narrow portion of the aperture 6, and up on the back side again on the narrow portion, as shown in Fig.5, and thus the rod has a stable support always in the supporting discs 5. a

When the lamp is "desired to be adjusted T through the supporting discs 5, the. user simply lifts the lamp socket end of the rod into a balance and then may slide it freely supporting discs 5 audit will stay wherever put,save only perhaps in a straight vertical position which is rarely ever used. WVhen the rod 3 is allowed to slide to the limit of its travel at either end {bean a vertical position of the lamp may be. 1a

Thus, as it were, the egg shaped apertures of the supporting discs 5 act asan automatic clamping means for the lamp rod 3.

The flangesS ofthe swivel block 9 are separated from each other by the apertu'red portion 13 thatpermits a slight fleXure of the flanges 8 under 'the influence of the spring 10, sufiicient at all times to produce a frictional resistance to the rotation of the discs5 about thebolt 7 so as to hold in stable condition the rod 3, which carries the lamp. s

Thus after the rod 3 has been assembled into the embrace of the discs 5 it may be revolved'about its axis or shoved longitudi nally through the discs5 in any position tional contacts of the egg shaped aperture 6 of the discs 5. Not only'that, the-rod 3 may be rocked or revolved about the axis of the bolt 7 as may be desired in any adjustment, of the lamp rod or pipe 3. r v

The swivel block 9, is threaded over a pedestal rod 14, which is alwaysin an upright position in allot thedillerentmodifications or adjustments I have shown or that may be required in normal use I of my bracket.

This pedestal rod 14; may be made either of solid rod or out of a piece of tubing and it is provided with annular shoulder or abutment 15 upon which rides the lower end of the swivel block 9 and this swivel block 9 is held in stable frictional connection with i the pedestal block 14 by reason of the clamping feature of the lower end of the swivel block 9, which is brought about by a series of slits 16 in the swivel block, which divides the lower end ofthe block into a series of clamping fingers 17 which have been con tracted in diameter to bring about a clampto the pedestal block 14 and thus construc tion is common to all of the different fastening means of the desks or tables which I employ and as shown by the drawings.

In Figures 1 and 8 my pedestal block 14 is bent at right angles at 38 into a horizontal section 39 and in the case of Figure 1 the horizontal section 39 terminates in some separated wings 40 which are perforated for a clamping bolt 41 having a wing nut 42 for an adjustment. This bolt'41 passes through some lugs 43 of a Wall piece 44, which is fastened to the wall or any vertical surface by the screws 45. A spreading thimble 46 is threaded. over the bolt 41 between the lugs 43 to take the thrust of the nut 42, thus concentrating the clamping action on the wings 40 against the lugs 43 as desired.

In Figure 3 my pedestal block from its portion 39 is turned at 47 into a vertical section 48 which extends down into a tubular clamping member 49, which is slit ted at 50 and clamped onto the portion 48 by the clamping bolt 51 andthumb nut 52. The tubular clamping member 49 is fixed in a base piece 53 secured by screws 54 or other suitable means to any horizontal supporting surface 55 as desired.

Thus I provide supporting means for the pedestal block 14 to suit what may be termed any normal variations required in the use of my bracket and at the same time preserve the flexible and universal adjustment feature of the member as provided for by the rod 3, discs 5 and swivel block 9 and spring clamping member 10.

The arrangement of the swivel block 9 onto the pedestal block 14 resting with its end sections 17 onto the flange or abutment 15 is desirable connection and a cheap one to make. Thus after the pedestal block 14 is connected on to the table, desk or other fixed surface then the user of the lamp may push the lamp about to any position he desires without having to clamp or unclamp manually any device to get the desired lamp position as the frictional arrangement of the parts is such that he may simply push them to position and they will stay so adjusted by reason of the friction devices I have described.

The arrangementof the egg shaped aperpoint that it permits an easy adjustment of the rod 8 longitudinally through these apertures, and allows it to automatically clamp itself as it were whenever it comes to rest.

The pedestal portion 14 is the same for all the different attachments that are neces sarily used. These different attachments for different desks, benches, or wall brackets may be provided in different localities and allowed to remain while the lamp with its rod 3 and connections including the swivel block may be lifted off from any given pedestal 14 and replaced on any other pedestal as occasion may require.

In shop work it is frequently desirable to keep the extra lamps in the tool room or store room and allow the pedestal and its supporting fastenings to remain in place, and then as use is required of the lamp, the lamp together with its connected parts to the swivel block 9 is taken out and put in position of use. Thus a workman who may be called upon to shift from one position to another may remove only the swivel block 9 with .its connected lamp over to the new pedestal.

Not only that, in shop practice lamps frequently break or burn out and it is more or less a common customfor workmen to rob another fixture of its lamp, but with my arrangement he may simply transfer the position of the lamps moving the swivel bl0CkS 9 onto the other pedestals and thus taking the lamp with him. v

While I prefer to make the discs 5 in two pieces, as I have shown which permits the making of them. of stampings, I may join the discs by welding them together, asbefore mentioned, at the seam 12 in order to produce a unitary block, so that where I have used the word block in the claims it will readily be understood that thereby is meant the mechanical equivalent of the discs in so far as the function of the bracket is concerned.

The friction bearing surfaces or checks 57 located near the outer diameter of the discs or block 5 in association with the reentrant clearance surface 58 concentrates the clamping action of the spring 10 where it is of most service as compared with the uniform flat surface over the entire block which is a desi der atum,

By hardening or heat treating this friction or contact surface 57 I get a better result in the working of the fixture.

lVhat I claim is 1. In a lamp supporting bracket, arod tures in the discs 5 which holds the rod 3 is a very desirable device from the standadapted to carry a lamp thereon, an apertured block consisting of disc shaped members formed with an aperture and having opposite openings adapted to carry the said lamp rod, and the said openings being egg shaped and arranged in vertical positions with their smaller andlarger portions posi? tioned in reverse arrangement relative to each other, whereby the overbalance of said rod in the aperture will cause said rod'to' engage the smaller edges of said block.

portions on, opposite I scribed, a block provided with an aperture ther'ethrough; said aperture being egg-- shaped and having the smaller end thereof at the bottom on one side of the block and at l l the top on the other side, and a rod mounted MILES FRANK DEACHQ 2. In a lamp bracket of the class de-

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