DE1780404U - SCHOOL BOARD. - Google Patents

Description

B e z e i c h now g: Openable school boards.

The invention relates to a wall-mounted school blackboard that can be opened like a book.

When using wall panels, it comes down to the easiest possible, large and non-glossy boards with as many writing and drawing pages as possible to have.

It is important that the individual areas described without them having to extinguish, can be easily turned around, and then always new, unwritten writing surfaces are available.

It is also important that every school child has the blackboards with them Easily lowered and raised, as well as the surface of the panels is not glossy but matt and remains matt despite frequent use.

Such an ideal table of the kind described has been around for years targeted, but not yet achieved.

Up to now, heavy wooden panels - lacquered and lined - were placed on frames Assembled in various ways, equipped with the simplest to the most complex mechanisms, or attached to the wall.

These boards are known.

But it is also known that with all these common tables after prolonged use the paintwork becomes brittle and crumbles, and that the lines fade and disappear; also that the original matt lacquer layer as a result the constantly alternating use of chalk and wet wiping is "polished", so that the board begins to shine after a relatively short time and the chalk lettering no longer accepts.

Such heavy, bulky, awkward to use, little space lacquered, graying boards have always been a nuisance of Teachers and all those who have to deal with it.

In contrast, the invention discloses a novel approach, which is extremely cheap, an option for labeling that goes beyond all previous ideas with the lowest weight and with easy operation ensures a much longer shelf life of the writing surfaces and the miniature ; This new school blackboard is attached to the wall like a large book, where you can always turn to a new page -.- See drawing 2.

These new boards take the subject matter of a school class or one Course of a number of days without a page due to lack of space needs to be extinguished! Even more so if two such panels are next to each other are attached to the wall.

The writing surfaces of the invented blackboard are made of plastic sheets such as from double-sided surface-refined "Resopal" or "Hornitex" panels, those in the common colors black respectively. are green-ground-matt and have a wide variety of lines or squares as required. See drawing 2.

These plates, here arranged like "book leaves", come with a narrow metal or plastic frame - see drawing 1.

As already mentioned, the individual panels are arranged in the form of an open book. These sheets are made by one, for each sheet Correctly arranged double hinge worn that a proper opening and enables page turning in the blackboard system as in a book.

The hinges are arranged so that these'in a dovetail guide Can be pushed up or down like a subord to cover the whole table system to be able to raise or lower it.

Cf. Drawing 3.

A spring is used to compensate for the weight. Lifting is done by a Foot pump - hydraulic or with air - similar to a modern barber chair.

The board ruler is under the top, transparent plastic layer attached; it can therefore neither be wiped off nor can it be permanent The stress fades.

The following example serves to illustrate the extent of newly gained writing surface space that the new school blackboard offers: One of these adjacent boards is purchased for a school room. This board is z. B. 1.50 m high and 1.20 m at the side. The closed panel booklet has a writing surface of 1.8 square meters But now this book board has six double-sided writable blow- each with 1.8 square meters, i.e. a total of 1.8 x 12 pages. This gives a total writable area of 21.6 square meters. If one assumes that there are two such new blackboard systems next to each other on the wall in a school room, the total writing area is 43.2 square meters; this corresponds approximately to the Floor area of a school classroom of 6 x 8 square meters! In the latter case, the one available is the one available Friction surface 1; 50 m high and 4x 1.20 m wide, also 1.50 x 4.80 m This large area is also available five times another 1.50 x 2.40 and two more 1.50 x 1.20 meters. Protection claims: 1.) School board, characterized in that two plastic panels with a matt surface, monochrome or under or »But the trans Parent top layer can be combined with one another as required Bundles glued on the inside or made-up as a whole with a narrow metal frame or plastic frame and with any number of these same plates each with one Double joint or semicircular wire back connected to one Chalkboard book. are united - .. ... ..... As in claim 1, but characterized in that det-in 9 Claim'1 created articulated book board spine in a degree or dovetail guide movable in a vertical direction and is designed to be lockable at any writing height.

Claims (1)

3) As in claim 2, but characterized in that the up "and Devaluation movement possibility of the book board is arranged so that this possibility of movement with the belt with a weight relief spring or hydraulically can be moved by means of a foot pump or otherwise mechanically and at any writing height detectable building is.