US2888227A - Bracket for a lamp holder - Google Patents

Description

May 26, 1959 L. N. MGRATH ETAL BRACKET FOR A LAMP HOLDER Filed May 12 1958 INVENTORS. u I. maxm/ By Jw/M 6. TaMMA/ Arron/z United States Patent BRACKET FOR A LAMP HOLDER Lloyd N. McGrath, Roseville, and John G. Tomlan, Detroit, Mich.

Application May 12, 1958, Serial No. 734,699

2 Claims. (Cl. 248-279) The invention pertains to an assembly adapted to be mounted on the back portion of an upholstered easy chair in such a manner as to provide light from above over the front portion of the chair including the space to be occupied by a person seated in the chair A further object of the improvement is to provide a bracket including a set of elements which may be adjusted to hold the lamp at a desired height and at a desired angle.

We shall now describe our improvement with reference to the accompanying drawings in which;

Fig. 1 is a perspective view of the upper portion of an easy chair and a bracket and lamp assembly mounted thereon;

Fig. 2 is an enlarged front elevational view of a clamp forming a part of the bracket, the view including a length of a tubular lamp holding arm;

Fig. 3 is side elevational view of the assembly shown in Fig. 2;

Fig. 4 is an enlarged sectional view on line 44 of Fig. 2;

Fig. 5 is a sectional view on line 5--5 of Fig. 4;

Fig. 6 is a sectional view on line 66 of Fig. 4;

Fig. 7 is a sectional view on line 7-7 of Fig. 2;

Fig. 8 is a diagrammatic presentation of the relative positions of two elements of the bracket and a lamp holding arm.

Similar numerals refer to similar parts throughout the several views.

The bracket includes two mounting strips 10 and 10a made in the form of oblong flat members of uniform width end thickness, each of which is provided with a longitudinal slot 11 running along its medial line and a hole 12 at one end. This serves for application of a screw 13 by means of which the respective strip may be secured to the wooden frame of the chair on which the bracket is to be mounted. The two strips 10 and 10a are mounted horizontally on the upper back portion of a chair 20, a length of one strip, specifically a portion remote from the hole, overlapping longitudinally a length of the other strip at the end remote from its hole. So that the slot 11 in one strip is in longitudinal alinement with the slot in the other strip. Secured to the back portion of the chair by means of a screw 15, is a vertical strip 14. The strip is disposed at right angle to the two horizontally disposed strips 10 and 10a, and is provided with a vertical slot 16, extending across the slots 11 in said horizontal strips.

Associated with all the above strips at the intersection of the vertical strip with the horizontal ones, is a U-shaped clamp generally marked 17. The clamp consists of a rectangular plate 18 provided along each of the two parallel sides with a leg or flange 19, the flanges extending from the plate at right angle and in the same direction. The plate is provided with a centrally located hole 21 while each of the flanges. is provided with a semicircular recess 22, the recesses being located lat- 2 erally with respect to a line passing throughout the center of the hole 21 at right angle to said flanges.

The clamp 17 is brought into cooperative engagement with the strips 10 and 10a, and the strip 14 by means of a bolt 23. The bolt is provided with a head 24 andan angular neck 25 adjoining said head. The angular neck is ofa width to fit into the slot 16 in the vertical strip 14, as shown in Fig. 5, for a sliding relation with said strip 14 while said head 24 is located on the side of the strip which faces the back of the chair. This is shown best in Figs. 4 and 7. The stem of the bolt which is threaded passes through the slots 11 in the horizontally-disposed strips 10 and 10a and through the hole 21 in the flat plate 18 of the clamp 17, and is provided at its outer end with a wing nut 26. Seated upon the stem of the bolt is a sleeve or spacer 27, the diameter of which is of a size to fit into the hole 21 in said plate 18 of the clamp.

Fitting into the slots 22 in the flanges 19 of the clamp 17, and held frictionally in contact with the vertical strip 14, is a tubular arm 28 which extends over the top of the chair, where secured to said arm is an electric lamp generally identified by numeral 30. The wires adapted to carry electric current to the lamp are concealed with in the interior of said tubular arm 28. Dotted lines 28a and 28b indicate some of the positions to which the arm may be swung and clamped against movement.

The manner in which the bracket and lamp-holding arm may be used is quite obvious. Normally, the arm 28 is disposed in the position shown in solid lines in Fig. 1. This is the result of having the clamp 17 drawn by means of the bolt against the vertical strip 14 when the flanges 19 will bear against said arm 28, pressing it for a frictional contact with the horizontal strip 10. Assuming now that the position of the arm is to be changed to a new position, such as that indicated by numeral 28b, this may beeifected without loosening the nut 26, as the clamp 17, which may be swivelled about the bolt 23, holds the arm in a yielding frictional contact with the nearest strip. However, should it be desired to raise the arm, this may be done by first loosening the nut and tightening it again after the arm has been raised.

After having described our improvement, what we wish to claim is as follows:

1. In combination, a bracket consisting of two fiat strips disposed horizontally in a longitudinal sliding engagement with each other, each strip being provided at one end portion out of engagement with the other strip, with a hole for attachment to a stationary support, and with a longitudinal slot in alinement with a similar slot in the other strip, a similar strip disposed vertically and having a hole at its upper end for attachment to a supporting member and a longitudinal slot, the vertical strip extending across the horizontal strips, a bolt passing through the slots in the horizontal strips and the slot in the vertical strip at its crossing of the horizontal strips, a U-shaped clamp having a rectangular plate provided with a hole for engagement with the bolt and two parallel flanges extending at right angle from said plate towards the vertical strip, each of the flanges having a recess at its outer end in alinement with the recess in the other flange, a tubular lamp-holding arm fitting into the recesses and a wing nut on the bolt to force the tubular arm by means of said clamp into a frictional contact with the vertical strip.

2. In combination, a bracket including a horizontal strip at one end portion attached to a supporting member, another similar strip attached at one end portion to a supporting member and having the opposite end portion in a longitudinally overlapping relation to the other strip, each of the strips having a longitudinal slot in alinement with the slot in the other strip, a vertical strip secured at its upper end to a supporting member and having a longitudinal slot therein, a slotted portion of the vertical strip crossing the horizontal strips at right angle thereto, a single bolt passing through the slots in all three strips the bolt having a rectangular neck portion fitting into one of the slots to prevent rotation of the bolt about its axis, a U-shaped clamp seated on the bolt, the clamp including a vertical plate having a hole therein for admission therethrough of the bolt, and two parallel legs extending from the plate towards the nearest strip each of the legs having at the end adjoining the strip, a recess in alinernent with the recess in the other References Cited in the file of this patent UNITED STATES PATENTS 581,524 Smith Apr. 27, 1897 1,071,428 Jones Aug. 26, 1913 2,139,309 Lindin ec. 6, 1938 WM s inf- "M

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