DE176574C

DE176574C -

Info

Publication number: DE176574C
Application number: DENDAT176574D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

KLASSEZOe. GRUPPEKLASSEZOe. GROUP

Den Gegenstand der Erfindung bildet ein Rahmen zum Einspannen von Zeichenblocks, an dem ein Papierblock mit entsprechend großen Zeichenflächen, dessen Blätter an der oberen Schmalseite in bekannter Weise aneinander geheftet oder geklebt sind, an einem zurückklappbaren Spannbügel derartig aufgehängt ist, daß das jeweilig zum Zeichnen oder zur Ansicht gebrachte oberste Blatt des Blocks mit Hilfe vonThe subject of the invention is a frame for clamping blocks of characters, on which a block of paper with correspondingly large drawing areas, the leaves of which on the upper one Narrow sides are stapled or glued to one another in a known manner, on a foldable back Clamp is suspended in such a way that the respective drawn or viewed top sheet of the block with the help of

ίο drei an den Seiten des Blocks angeordneten aufklappbaren, federnden Klemmleisten gehalten und durch Zurückbiegen und Feststellen des oberen Spanhbügels gespannt wird.
- In der Zeichnung ist der Erfindungsgegenstand in einem Ausführungsbeispiel veranschaulicht. ■ Fig. ι stellt den Rahmen mit eingespanntem Block in Vorderansicht und Fig. 2 in Rückansicht dar; Fig. 3 zeigt denselben in Seitenansicht und Fig. 4 in Draufsicht; in Fig. 5 ist ein dazu gehöriger Papierblock in Vorder- und Seitenansicht dargestellt, und Fig. 6 veranschaulicht die Anwendungsweise der Einrichtung an einer Schultafel.ίο three hinged, resilient clamping strips arranged on the sides of the block are held and tensioned by bending back and locking the upper clamping bracket.
- In the drawing, the subject matter of the invention is illustrated in one embodiment. ■ Fig. Ι shows the frame with the clamped block in a front view and FIG. 2 in a rear view; Fig. 3 shows the same in side view and Fig. 4 in plan view; FIG. 5 shows a paper block associated therewith in front and side views, and FIG. 6 illustrates the manner in which the device is used on a school blackboard.

Der zur Aufnahme des Zeichenblocks ζ dienende Rahmen besteht aus zwei senkrechten Leisten a, b, die oben, in der Mitte und unten durch die wagerechten Querleisten c, d, e miteinander verbunden sind. An der Vorderseite dieses aus den Leisten a, b, c, d, c gebildeten Rahmens ist eine starke Pappe oder ein Brett i befestigt, das sowohl als Unterlage für den Papierblock ζ als auch zur Versteifung des ganzen Rahmens dient. Die Leiste α ist mit zwei oder einer beliebigen Anzahl Haken h versehen, mittels derer der Rahmen in an dem Gestell der Schultafel, an einem Sehrank o. dgl.The frame used to hold the drawing pad ζ consists of two vertical bars a, b, which are connected to one another at the top, in the middle and below by the horizontal cross bars c, d, e. On the front of this frame formed from the strips a, b, c, d, c , a strong cardboard or board i is attached, which serves both as a base for the paper block ζ and to stiffen the entire frame. The bar α is provided with two or any number of hooks h , by means of which the frame in on the frame of the school blackboard, on a viewing bench or the like.

angebrachte ösen g eingehängt werden kann. An der mittleren Querleiste d ist eine Stütze s rückwärts schwingbar angelenkt, die um ihren Befestigungsbolzen t drehbar ist und auf diesem mittels der Schraubenmutter r festgestellt werden kann. Die Stütze s besitzt an ihrem freien Ende eine Anzahl Einschnitte u, mit denen sie an einem an der Rückseite des zum Aufhängen des Rahmens dienenden Tafelgestelles o. dgl. befestigten Haken eingeklinkt wird.attached eyelets g can be attached. A support s is hinged to the middle transverse bar d so that it can swing backwards, which is rotatable about its fastening bolt t and can be fixed on this by means of the screw nut r. The support s has a number of incisions u at its free end, with which it is latched onto a hook attached to the rear of the table stand or the like which is used to hang up the frame.

An der Vorderseite der unteren Rahmenleiste e ist ein durch Zwischenwände I in einzelne Fächer abgeteilter Kasten k zur Aufnahme der Zeichengeräte angebracht. Der Kasten k ist mittels der an der Querleiste e angelenkten Deckleiste m verschließbar, die sowohl in ihrer auf- wie zugeklappten Stellung durch Federn/festgehalten wird. An. den senkrechten Rahmenleisten a und b sind ebenfalls Deckleisten η und 0 angelenkt, die mittels Federn/ in ihren jeweilig auf und zugeklappten Stellungen gehalten werden. An der oberen Rahmenquerleiste c sind zwei Lagerarme w befestigt, in denen die Spannstange ν drehbar gelagert ist. Die Spannstange υ ist aus einem kräftigen Draht in der Weise gebogen, daß ihre Enden zwischen den beiden Lagern w kurz abwärts gebogen je einen kurzen Hebelarm p bilden und dann wieder wagerecht gebogen in den Lagern w drehbar gelagert sind; eines der beiden Stangenenden ν ist dann als langer Hebelarm q wieder abwärts gebogen, wie aus den Fig. 1 und 2 ersichtlich ist. Die Spannstange υ wird in ihrer Spannstellung mittels dieses Hebelarmes q festgehalten, was entweder durch Klemmung des Hebelarmes q an der Außenfläche der Rahmenleiste b oderOn the front of the lower frame strip e , a box k, which is divided into individual compartments by partitions I, is attached to accommodate the drawing instruments. The box k can be closed by means of the cover strip m which is hinged to the transverse strip e and which is held in place by springs / in both its open and closed position. At. the vertical frame strips a and b are also hinged cover strips η and 0 , which are held in their respective open and closed positions by means of springs /. Two bearing arms w , in which the tension rod ν is rotatably mounted, are attached to the upper frame cross bar c. The tie rod υ is bent from a sturdy wire in such a way that its ends are bent downwards briefly between the two bearings w each form a short lever arm p and then bent horizontally again are rotatably supported in the bearings w; one of the two rod ends ν is then bent downwards again as a long lever arm q , as can be seen from FIGS. 1 and 2. The tension rod υ is held in its tensioned position by means of this lever arm q , which is achieved either by clamping the lever arm q on the outer surface of the frame strip b or

Claims

can be done by a bolt q ¹ rotatably attached to the back of the bar b. If necessary, the other end of the tension rod ν can also be formed into the same lever arm q , which is to be secured in the tensioned position in the same way. Two or any number of hooks χ are slidably attached to the tie rod ν , to which the drawing pad ζ is attached by means of

ίο eyelets y or with the help of holes punched through the block ζ.

The clamping frame is used in the following way: After the lever arm q has been freed from its fastening bar q ¹ , the lever arms p swing with the suspension rod υ around the bearing w to the front respectively. down until the arms p rest on the bar c. The terminal strips m, n, 0 are folded over, whereby the strip m covers the box k , and now the block ζ is suspended from the hook χ of the rod ν by means of the eyelets y. The cover strip m is then folded down again, lies on the lower edge of the block ζ and holds it in place with a spring. The lever arm q is then pressed down until it rests in a clamping manner on the outer surface of the frame strip b and, if necessary, can be held in this position by means of the rotary lock q ^1. As a result of the downward movement of the lever arm q , the lever arms p and thus the tension rod ν are swung upwards and backwards, so that the sheets of the block, namely the top drawing sheet, are taut because the terminal strip m holds the lower end of the block. The clamping effect of the bar m can be further improved in that the lower frame bar e is slightly grooved on its side facing the clamping bar, so that the block sheets are pressed somewhat into this groove when the bar m is pressed. The backward swinging of the tension rod ν causes the upper block edge to bend backwards over the edge of the upper frame strip, whereby the upper layers of the drawing sheets are more attracted than the lower ones and a tight drawing surface is achieved. After the lever arm q has been determined , the two vertical. Side clamping strips η and ο folded onto the side edges of the block ζ , so that the device is ready for use.

After the drawing has been completed, the terminal strips m, η, ο are folded up again, the lever arm q is released and the designated top sheet is then laid over the top and back, whereupon the block ζ is clamped in again in the manner described above and the next top sheet again to the Drawing is ready. Likewise, every sheet of the block can be drawn after. Overlap the sheets above are clamped in the manner described and as a teaching subject, z. B. in object lesson, serve.

■ The facility is primarily intended to serve as a teaching subject for school lessons, and for this purpose the frame can be attached to the appropriate loops g with the help of the hooks h . The school board, the catheter or another piece of furniture in the school room or can be set up freely using the support rod s.

Pate ν τ-An SPRU c η:

Frame * blocks for clamping of characters, characterized in that the block (z) at a top of the frame strip (c) swingably mounted clamping bracket (v) suspended fm by means of three arranged at the side edges of the block hinged, resilient clamping strips, η, 0) and is tensioned by swinging up and locking the clamp (v).

1 sheet of drawings.