US2488067A

US2488067A - Metal box having trays mounted on swingable linkage

Info

Publication number: US2488067A
Application number: US704603A
Authority: US
Inventors: Roark Martin Luther
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-10-21
Filing date: 1946-10-21
Publication date: 1949-11-15
Anticipated expiration: 1966-11-15

Description

M. L. ROARK METAL BOX HAVING TRAYS MOUNTED Filed Oct. 21, 1946 ON SWINGABLE LINKAGE Nov. 15, 1949 INVENTOR, {VLD Roark,

ATTORNEY- Patented Nov. 15, 1949 UNITED STATES PATENT OFFICE METAL BOX HAVING TRAYS MOUNTED ON SWINGABLE LINKAGE 1 Claim.

My invention relates to boxes of the type disclosed in Letters Patents No. 303,783 issued August 19, 1884, No. 1,766,553 issued June 24, 1930, No. 1,858,539 issued May 17, 1932, No. 1,882,756 issued October 18, 1932 and No. 1,925,409 issued Septemher 5, 1933.

Tool boxes of the type mentioned employ a two part box, the top and bottom parts of which are hinged together; two or more trays are mounted in the box in superposed relation and are so connected with the top and bottom sections of the box, that when the box is opened the trays will automatically be raised and arranged step fashion.

In the raising and lowering operation the trays do not always move smoothly but wobble (especially when the pivot joints of the linkage employed become worn or are loose) also the opening and closing action is often quite noisy due to parts striking together as the trays get out of line.

It is to overcome in a simple, yet effective way, the objections above noted and render the operation of the box, in opening and closing, smooth and as noiseless as possible by preventing the trays from falling out of line, that my invention has been made.

To the attainment of the foregoing objects invention resides in the novel construction and combination of parts hereinafter first described in detail and then specifically pointed out in the appended claim, reference being had to the accompanying drawing in which:

Fig. 1 is one end elevation of a box embodying my invention, the parts being in the open position.

Fig. 2 is an elevation of the other end of the box with the parts in the partly closed position, the closing movement being in the direction of the arrow.

Fig. 3 is a detail top plan view of the box in the open position showing the same at said other end.

In the drawing in which like numerals of reference indicate like parts in all the figures, I represents the bottom section of the box and 2 the top section. The sections I and 2 are hinged together as at 3 and have the usual fastening devices l9 and the top has the usual handle 20.

The trays are indicated by 4 and 5 and they are linked together by links or levers I and 8. The tray 4 is also linked to the bottom section I 2 by the links 1 and links 6 while the tray 4 is linked to the top section 2 by links 9.

l3 and M designate respectively the pivots of the links 6 and 1 to the bottom section 'I of the box, and I8 designates the pivot of the links 9 to the top 2. The links 6 and 'l are pivoted at .H! and !5 respectively to the tray 4 While links I and 8 are respectively pivoted at H and I! to the .tray 5.

The pivots l0 and II are swiveling pivots to which coil springs l2 are anchored as shown. By connecting the front pivots of the trays 4 and 5 by coil springs 12 (one at either end of the trays) I find that the objects of my invention are accomplished satisfactorily, the trays stay in line in both opening and closing and do not assume a jerky action during their movements but operate smoothly and quietly.

From the foregoing description it is thought the construction, operation and advantages of my invention will be clear to those skilled in the art.

What I claim is:

In a two part box having a bottom section and a top section; at least two superposed trays within said box; a pair of parallel links pivoted to each end of and connecting the trays and pivoted inside of and to the bottom section of the box to hold the bottom tr-ay substantially parallel to the bottom of the box, one link of each pair being pivoted to the tray next above the first mentioned tray; a third parallel link at each end pivoted to the two trays; links pivotally connecting each end of the first mentioned tray to the top section of the box, combined with a tension spring at each end of the trays connected respectively to the adjacent first and second mentioned trays at their respective front link pivots to keep them in line While opening and closing the box.

MARTIN LUTHER ROARK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 727,126 Gramelspacher May 5, 1903 1,893,526 Shriver Jan. 10, 1933 2,191,066 Barber Feb. 20, 1940 ,35 ,561 Davis Sept. 19, 1944