US1379638A - Adjustable light-support - Google Patents

Description

.F. X.MAIER.

ADJUSTABLE LIGHT SUPPORT.

V APPbICATION .FILED m3- I7, 1920,,

Patented May 31 19211.

2 SHEETSSHEET 1'.

F. X. MAIER.

ADJUSTABLE LIGHT SUPPORT. APPLICATION FILED FEB H. 1920.

1,379,638. Patented May 31 19211.

2 SHEETSSHEET 2.

FRANK X. MAIER, OF STERLING, ILLINOIS.

ADJUSTABLE LIGHT-SUPPORT.

Specification of Letters Patent.

Patented May 31, 1921.

Application filed February 17, 1920. Serial No. 359,222.

To allwhom it may concern:

Be it known that I, FRANK X. MAIER, a citizen of the United States, residing at Sterling, in the county of lVhiteside, State of Illinois, have invented a new and useful Adjustable Light-Support; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to supports for electrio lights and has for its object to provide a support of this character whereby an electric light may be supported and held at various positions vertically or horizontally.

A further object is to provide an electric light support particularly adapted for supporting an electric light and the wires connected thereto, said support being universally connected to brackets adapted to be secured to a wall or ceiling, and the arm of the support comprising telescopical engaging members which allow the support to be extended or shortened as desired. The inner member of the arm being formed of sheet 4 metal and provided with a longitudinal slot on its under side which slot allows the longitudinal movement of a wire supporting member carried by the outer member so that the support may be extended or shortened as desired. Also to so construct the inner member so that it will frictionally engage the surface of the outer member so that the members will be prevented from easy displacement after they have been moved to the desired extended or shortened position.

With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawings, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawings Fignre 1 is a side elevation of the light support.

Fig. 2 is a bottom plan'view of the sup port.

Fig. 3 is a sectional View taken on line 33 of Fig. 2.

Fig. 4 is a detail view of a portion of the telescopical members and the wire supporting holder.

Fig. 5 is a sectional view taken on line 55 of Fig. '2.

Fig. 6 is a view in side elevation showing the light support adjusted angularly downwardly.

Referring to the drawings, the numeral 1 designates a wall to which the light support is secured. The light support 2 comprises a hollow section 3, which section is preferably rectangular in cross section, and a solid sec tion 4. Section 4 closely fits within the chamber 5 of the hollow section 3 and is adapted to be moved inwardly and outwardly so as to increase or diminish the length of the support as a whole. Section 3 is formed from sheet metal bent so as to form a rectangular shaped member, however the longitudinal edges of the metal forming the sections are spaced from each other as at 6 so as to allow a spring binding of the sides of the section 3 on the sides of the section 4. This spring binding providing means whereby the sections will be maintained in any telescopical position to which ittmay have been moved. The flanges 7 of the hollow member 3 near their outer ends are provided with longitudinal slits 8, through which slits a metallic strip 9 is forced and has its ends bent as at 10 so as to overlie the sides ,of the hollow section 3 so as to prevent the spreading of the hollow section as the light support as a whole is moved to various positions. Metallic strip 9 also holds the walls of the hollow section 3 in binding engagement with the surfaces of the section 4. The longitudinally disposed slot 11, formed by the spaced flanges 7 has passing upwardly therethrough a bolt 12, which bolt is embedded in the slidable member 4 and the outer end of the bolt 12 beyond the lower face of the hollow section 3 is provided with a transversely disposed segmental section 13 which is insulated as at 14 and is adapted to arch an electric light cord or wire 15 for holding said wire or cord when the segmental section 16 is forced into clamping engagement with the cord by means of the bolts 17. Segmental section 16 is also formed from insulating material so as to prevent short circuiting at the wire supporting clamp. Secured to the outer end of the section 4 is a plate 18, the outer end of which plate is provided with a clamp 19 similar in shape to the clamp carried by the other end of the section 4, however the use of insulation at this point may be eliminated for the reason that the section 4 is preferably made of Wood, if section 4: is not made of wood it is to be understood that insulation material may be used in the clamp 19. The light cord is of a conventional form and is provided with a plug so that it may be plugged into a wall fixture or any other fixture, for instance a ceiling one. Secured to the sides of the hollow section 3 as at 21 are angular brackets 22, which brackets are provided with ears 23 which are parallel to each other and engage the sides of a block 24 and are pivoted thereto as at 25 so as to allow a vertical pivotal action to the light support 2 as a whole. The engagement of the ears 23 on the block24 being a frictional one and sulficiently strong to maintain the light support in any position to which it may have been moved. The block 24: is pivotally mounted as at 26 in brackets 27 which are secured to the wall 1 so that the support as a whole may be swung horizontally. The pivotal points 25 and 26 being at right angles to each other,

it will be seen that a universal joint is provided by means of which the light support I may be adjusted angularly to any position desired for supporting the light and that the section 4: may be adjusted outwardly or inwardly so that the light may be supported at various distances from the wall,

The rear end of the section 4 is provided I with a transversely disposed aperture P which aperture has disposed therein a coiled spring 1", Coiled spring l is an expansible spring and forces outwardly against the inner walls of the section 3, washers 4 which frictionally engage the inner walls of the section 3, thereby providing a frictional means for holding the section 41: in any position to which it-may be moved.

t allow the frictional binding of the hollow member upon the surfaces of the other memp the outer member, said clamps of the outer member forming means for supporting an electric l1ght and lts wlres, a universal supportingmeans forsupporting one end of the light support as a whole, and spring actuated friction disksdisposed in an aperture of the outer member for frictionally engagingthe walls of the inner member. l

2; A support for electric lights and their wires comprising a pair of telescopically engaging members, one of said members being formed from sheet metal and rectangular in cross section, the under face of the hollow section being provided with a longitudinally disposed slot thereby allowing the frictional engagement of the walls thereof with other section, a wire supporting means carried by the inner end of the section within the hollow section and extending downwardly through the longitudinally disposed slot,

- means extending transversely of the flanges on either side of the longitudinally disposed slot for regulating the frictional engagement of thesides of the hollow section with the other section, clampingmeans, at the outer end of the outer section for clamping an electric light Wire and supporting the same, a universal connection to a wall carried bracket, wherebyth'e light support may be moved to any angle vertically or horizon-' tally, disks disposed in a transversely disposed aperture in the inner end of the outer member, and Ya coiled spring disposed insaid aperture between the disks and forcing said disks into frictional engagement with the Walls of the inner member.

In testimony whereof I have signedv my name to thisspecification in the presence of two subscribing witnesses. V

FRANK X. MAIER.

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