US1877669A - Blackboard - Google Patents

Description

Sept. 13, 1932. H. KlTZE 1,877,669

BLACKBOARD Filed Sept. 17. 1930 w J: Hum I WW" n umm uwfia) 9 "WI H, /6 a 7 a 7 fiFmKZZZ INVENTOR ATTVORNEY Patented Sept. 13, 1932 HERMAN KITZE, OF OWEN, WISCONSIN BLACKIBOARID FICE,

Application filed September 17, 1930. Serial No. 482,590.

My present invention has reference to blackboards of the folding type and for childrens use and my object is the provision of a blackboard of this character with a seat which, when the board is not in use may be folded thereagainst and which when the board is in use may be swung therefrom to a horizontal position and firmly supported upon a leg that is associated with the seat.

A further object resides in the manner in which the leg is locked to the seat when the seat is in operative position.

To the attainment of the foregoing the invention consists in the improvement here- 16 inafter described and definitely claimed.

In the drawing: Figure 1 is a perspective view with my improvement in applied position.

Figure 2 is a detail side elevation with parts broken away and parts in section.

Figure 3 is a rear elevation looking toward the brace for the blackboard to which the seat is hingedly connected.

Figure 4 is an inverted plan view of the seat with the leg thereof in supporting position.

Figure 5 is a similar view showing. the leg folded against the seat.

The blackboard is of the folding type for use by children. The front posts of the frame are for distinction indicated by the numeral 1 and the hinged prop by the numeral 2. The posts 1, at asuitable distance below the blackboard 3 have let therein a brace strip 4.

To this strip 4 at the top edge thereof there is secured a substantially U-shaped bracket 5 to whose upstanding arms there is pivoted the inner and reduced end 6 of the board that comprises the seat 7.

In the showing of the drawing the seat 7, on its under face and adjacent to its outer end is provided with a transverse substantially rectangular groove 8 designed toreceive therein when the seat is in operative position one end of a leg or prop 9 of the improvement. The leg is constructed from a strip of wood or like material and the sides thereof, adjacent to the outer end of the strip which enters the groove 8, are provided with oppositely disposed apertures for the reception of the offset ends of spring arms 9. These arms are spaced a distance approximately equalling or slightly greater than the width ofthe prop or leg'9 and have their inner or free ends rounded to provide eyes through which pass headed securing means 10 such as headed bolts, or if desired, bolts engaged by nuts.

When the seat is not in use the leg is withdrawn from the notch 8, swung against the bottom of the seat 7 and the seat and leg are unitarily swung agai nst the blackboard, as

indicated by the dotted lines in Figure 1 of the drawing.

There is sufficient binding between the pivot bolt 11, (which is engaged by a nut 12) the arms of the bracket 5 and the reduced central extension 6 of the seat 7 to hold the seat in its said dotted line position. The seat may be readily swung outwardly to horizontal position, the prop or leg swung on its pivotal connection with the spring arms or rods 9 and theupper end thereof let into the notch 8.

Thus it will be noted that the seat is rigidly when in use.

- Having described the invention, I'claim:

In combination with a frame having a board supported thereon, a seat pivoted to the frame upon an axis lying coplanar with the surface of the board, spring arms attached at one end to the seat and a leg member pivoted to the free ends of sai d arms, the seat having a notch for the reception of the end of said leg member and the free ends of said arms located opposite said notch whereby the leg member bridges the notch when closed against the seat.

In testimony where of I aflix my signature. HERMAN KITZE.

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