US1531810A - Extension rail - Google Patents

Description

March 31, 1925. 1,531,810

w; F. PELTON EXTENSION RAIL Filed Oct. 15, @923 Z INVENTOR- l l z'llzam FPeZfmz BY. 6/3 W ATTOR Y Patented Mar. 31, 1925.

WILLIAM F. PELTON, OF

BROOKLYN, NEW YORK, assrenon or ONE-EAL! '10 JOHN YOUNG, or BROOKLYN, NEW YORK. l

nxrnnsron, RAIL.

Application filed October 15, 1933. Serial No. 668,518.

To all whom/it may concern:

Be it known that 1, WILLIAM F. PELTON, a citizen of the UnitedsStates, and residin at Brooklyn, in the county of Kings an State of New York, have invented certain new and useful Improvements in Extension Rails, of which the following is a specification, such as will enable those skilled in the art to which it'appertains to make and use the same.

This invention relates to extension rails and particularly to rails for extension tables. and the object of the invention is to provide a simple and yet strong and durable rail construction composed of sheet metal and being so interlocked as to form a strong and durable bearing'for the separate rails when in an extended or contracted position, and with this and other objects in View the invention consists in an extension rail or rails of the class and for the purpose specified which is simple in construction and efiicient in use and which is constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the viewsgand in which Fig. 1 is a bottom plan view of my improved extension rails indicating the method of their use;

Fig. 2 a side view of part of the construction shown in Fig. 1; and,

Fig. 3 a partial section on the line 3-3 of Fig. 1. I

My invention resides particularly in the provision of extension rails for what are known as extension tables, and for the purpose of illustrating one use of my invention. I have indicated in the drawing by dot and dash lines at 5 the top of an extension table, and in Fig. 3 of the drawing 6 represents the central stanchion or leg structure of the table, and at 7 I have shown two extehsiomrails or extension rail units, each of the units being of similar construction and comprising a main rail 8 secured to the stanchion or other support =6 by angle-iron plates 9 or in any desired manner.

The rail 8 is fashioned from an elongated strip of sheet metal formed into substantially rectangular form in cross section or comprising depending side walls 10 and 11,

the side wall 10 being pressed inwardly toform an elongated dove-tail groove or socket 12 substantially centrally thereof, and the side wall 11, or the lower end portion thereof is 'bent at right angles as shown ,4

at 13 and extends beneath and serves to reinforce the dove-tail socket portion 12 of the wall 10.

Employed in connection with the rail 8 are two supplemental slidable rails 14 of similar construction, each of said rails'being fashioned from sheet metal and comprising a top plate 15 to which the movable portion of the table is secured by screws or in any other desired manner, and the rail 14 is provided with a depending plate 16 extending at right angles to the plate 15, and centrally of the plate 16 is an outwardly prQ ecting dove-tail member 17 which is adapted to fit in and o erate in the dovetail socket 12 of the rail 8, and the lower edge portion of the rail 14 is preferably extended as shown at 18 to provide a clearance between the same and the lower end portion of the side wall 10 of the rail 8 as clearly shown in Fig. 3 of the drawing.

Secured to the outer face of the side plates 10 of each of the rails 8 and at the opposite sides of the central portions of said rail are two stop members 19 and 20,

the members 19 being the innermost, while the members 20 are at the outer ends of said rail, and secured to the inner faces of the' parts 18 of the rails 14 are members 21 adapted to engage the members 19-20 to limit the inward and outward movements of the slide rails 14. In the construction shown the members 19, 20 and 21 are in the form of rollersmounted u on pins and any .suitable stop maybe provi ed.

The distinctive features of my invontihn reside in the simplicity of the construction of the separate rails 8 and 14, and the strength of said rails is provided by reason of the construction thereof. It will be noted that each of the main rails 8 are provided with a single socket 12 opening outwardly through one face thereof, while the rails 14 are each provided with a single clove-tail member adapted to fit in and'operate in the sockets while the dove-tail socket portions 12 of the rails 8 are reinforced and strengthened by the flanges 13, it being understood that the weight of the extena i I by'the' walls 11 of the rails 8 through the flanges 13. Further, by reason of the sim plicity of the construction of the separate rails the same may be produced at nominal expense and, as a matter of fact, may be produced practically as cheap or even chezper thanwooden rails which are comm y employed, and each rail unit is of similar form and construction.

, While I have shown and described a specific use of my improved extension rail and have shown specific means for interlocking the se arate rail members, I am not necessarily imited in these respects, and

various changes in and modifications of the construction herein shown and described may be made, within the scope of the appended claims, withoutdeparting from the spirit of my invention or sacrificing its advantages.

Having fully described my invention,

what I claim as new and by Letters Patent, is

1'. An extension rail of the class described comprising a main rail member fashioned from sheet metal and being substantially rectangular in form in cross section, one side face of said rail bein pressed inwardly to form a dove-taile socket extending longitudinally! thereof, said inwardly pressed side face bearing upon the opposite side face of said rail and the last named side face of the rail being provided with a part extending beneath and serving to reinforce' the inwardly pressed dove-tailed portion of said rail, and a supplemental rail member fashioned from sheet metal and provided with a longitudinally projecting dove-tailed member fashioned to conform with and fit snugly'in the socket of the main rail member.

v desire to secure side face bearing upon the opposite side face of said rail and the last named side face of the rail being providedwith a part extending beneath and serving to reinforce inwardly pressed dove-tailed portions of said rail, a supplemental rail member fashioned from sheet metal and provided with a longitudinally projecting dove-tailed member fashioned to conform with and fit snugly in the socket of the main rail memher, and said last named rail member beingsubstantially L -sl1aped in form in cross section.

3. An extension rail of the class described comprising a main rail member composed ofsheet metal and substantially rectangular in form in cross section and comprising top, bottom and side walls, and a supplemental rail member substantially L- shaped in form in cross section, one side wall of the main rail member being pressed inwardly to form 'a dove-tailed socket extending longitudinally thereof, and the other side wall and the bottom wall of said mainrail member being in juxtaposition to and cooperating with said dove-tailed socket to reinforce and strengthen the same, and said supplemental rail member'being provided with a dove-tailed member fashioned to conform with and fit snugly in the socket of the main rail member. I p In testimony that I claim the foregoing as my inventlon Iv have signed my name this 11th day of October, 1923.

WILLIAM F5 rELToN.

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