US1950591A

US1950591A - Chair ladder

Info

Publication number: US1950591A
Application number: US596304A
Authority: US
Inventors: Bing Alexander
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-03-02
Filing date: 1932-03-02
Publication date: 1934-03-13
Anticipated expiration: 1951-03-13

Description

A. BING CHAIR LADDER March 13, 1934.

Filed March 2, 1932 INVENTOR BY I r ATTORNEY J and as indicated in Fig. 2.

Patented Mar. 13, 1934 UNITED STATES PATENT OFFICE 1 Claim.

' My invention relates to improvements in socalled chair ladders, and more particularly has reference to a structure of the class described which can be economically and strongly constructed from short pieces of otherwise waste material, providing clearance for the legs when used as a chair, and adapted to provide stable support when employed as a ladder.

Referring to the accompanying drawing, Fig. 1 illustrates in perspective, parts being broken away, a suitable embodiment of my invention when in use as a chair. Fig. 2 is a perspective view illustrating the same when used as a ladder, parts being broken away. Fig. 3 is an enlarged detail of part of the hinge mechanism in the position shown when used as a ladder. Fig. 4 is a similar View of the same when employed as a chair, and Fig. 5 is an enlarged detail showing an application of the partly collapsible lower step of the same.

6, 7, indicate the front and back legs on one side, 8, 9, indicating the corresponding legs at the other side. 10, 11, indicate the side rungs connecting said legs, and 12, 13, the side posts of the back, connected by transverse members 14, 15, and 16, said transverse members being connected by rungs or rods 17, as shown. The seat 18 has a forwardly hinged portion 19, provided with

legs

20, 21, and 22, 23, the under part being suitably braced as indicated at 24, and at the inside of the lower portion of the

front legs

22, 23, suitable cleats 25 are provided which provide support for the collapsible section 26 of the lower step 27 when the same is used as a ladder, 28 indicates the top step of the ladder which is hinged upon the cross bar 14, shown to advantage in Figs. 3 and 4, where it will be seen that the back of the hinge 29 is screwed into the back of the cross bar 14, and connected at the top to the depending portion 30, of the other half of the hinge, which extends beneath the top step 28, as indicated at 31, said extension portion having depending portions 32, which serve to socket or seat the opposite ends of the bottom rung 33 when the device is used as a ladder, the same being shown to advantage in Fig. 2.

The step 26 is adapted to fold down when used as a chair, to clear the legs when sitting upon the same, and 34 indicates a cleat secured to the same as shown to advantage in Fig. 5, and having a depending flange at one side 35, through which a suitable screw 36 may be passed at each side of the chair or ladder, to provide pivotal support therefor. The

back posts

12, 13, have additional support upon the side rungs 10, 11, and the

back legs

6, 8, project slightly rearward of the centre of gravity, so that when standing upon the top of the ladder, the liability of tilting is reduced to a minimum. Also, it will be observed, that the

front legs

20, 21, when thrown upwardly for use as a ladder provide, by means for the rung 33, support for the front edge of the top step, as shown to advantage in Fig. 2, thus insuring a stable, rigid construction. 37 indicates a back rung, also giving additional rigidity and bracing to the device.

Of course it will be understood that various modifications may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

I claim:

In a chair-ladder comprising a seat, front and rear legs at each side of said seat, a forward portion hinged to said seat, side legs secured to said portion and normally lying adjacent to and forwardly of said front legs, a step secured between said front legs, and a step pivotally mounted within said side legs and normally hanging vertically adjacent the front edge of the first-named step, said forward portion and the side legs being adapted to swing about said hinges over upon said chair seat to form a step ladder and said pivotally mounted step being adapted to swing to a horizontal position and means on said side legs for supporting said pivotally mounted step in horizontal portion above said seat. I

ALEXANDER BING.