DE376843C - Tear bar - Google Patents

Tear bar

Info

Publication number
DE376843C
DE376843C DEG53684D DEG0053684D DE376843C DE 376843 C DE376843 C DE 376843C DE G53684 D DEG53684 D DE G53684D DE G0053684 D DEG0053684 D DE G0053684D DE 376843 C DE376843 C DE 376843C
Authority
DE
Germany
Prior art keywords
tear
tear bar
board
groove
underside
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEG53684D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KAREL GWOZDZ
Original Assignee
KAREL GWOZDZ
Publication date
Priority to DEG53684D priority Critical patent/DE376843C/en
Application granted granted Critical
Publication of DE376843C publication Critical patent/DE376843C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/02—Draughting machines or drawing devices for keeping parallelism
    • B43L13/04—Guides for rulers
    • B43L13/048—Guides for rulers with T-squares

Landscapes

  • Making Paper Articles (AREA)

Description

Reißschiene. Es bestehen bereits Reißschienen, bei denen der Reißschienenkopf durch einen leicht abnehmbaren und in eine an der Unterseite des Reißschienenbrettes befindliche Nut eingreifenden, federnden Klemmhebel festgehalten wird. Diese Nut ist aber nicht derart ausgebildet, daß ein sicheres Anpressen der Schiene an das Brett gewährleistet ist.Tear bar. There are already tear rails in which the tear rail head by an easily removable one and into one at the bottom of the tear rail board located groove engaging, resilient clamping lever is held. This groove but is not designed in such a way that the rail can be pressed securely against the Board is guaranteed.

Durch vorliegende Erfindung wird dieser Nachteil dadurch behoben, daß die an der Unterseite des Brettes befindliche Nut an der dem Reißschienenkopf zugekehrten und die Klemmfläche für die Röllchen bildenden Seite derart keilförmig verlaufend ist, daß die Reißschiene gleichzeitig an die Oberfläche und gegen die Seitenkante des Brettes gepreßt wird.This disadvantage is eliminated by the present invention in that that the groove located on the underside of the board at that of the tear rail head facing and the clamping surface for the rollers forming side so wedge-shaped is running that the tear bar at the same time to the surface and against the Side edge of the board is pressed.

In der Zeichnung ist der Erfindungsgegenstand beispielsweise an einer Ausführungsform dargestellt-. Abb. i zeigt die Draufsicht und Abb. 2 einen Schnitt nach a-a der Abb. i ; Abb. 3 veranschaulicht die Wirkungsweise des Klemmhebels.In the drawing, the subject matter of the invention is, for example, on one Embodiment shown-. Fig. I shows the top view and Fig. 2 shows a section according to a-a of Fig. i; Fig. 3 illustrates how the clamping lever works.

Der Reißschienenkopf besteht aus einer halbkreisförmigen Scheibe i, die an ihren beiden Enden aus dem Material der Scheibe herabgebogene Nase 2 besitzt, während zwischen diesen Nasen in der Ebene der Scheibe ein Lappen 3 vorhanden ist, so daß sich diese Nasen 2 und der Lappen 3 an die Reißbrettkante anlegen können und die Reißschiene gerade führen.The tear rail head consists of a semicircular disk i, which has lugs 2 bent down at both ends from the material of the disc, while a tab 3 is present between these lugs in the plane of the disc, so that these lugs 2 and the flap 3 can lay on the edge of the drawing board and guide the tear strip straight.

Unterhalb der Scheibe i befindet sich ein Scharnier q., an dem ein Klemmhebel 5 angelenkt ist, der durch eine Schraubenfeder 6 gespannt wird.Below the disk i is a hinge q., On which a Clamping lever 5 is articulated, which is tensioned by a helical spring 6.

Das Reißbrett 8 ist an seinem unteren Teile mit einer Längsnut g versehen, in welche der Klemmhebel 5 mit seinen Röllchen 7 eingreift, wodurch die Reißschiene an dem Reißbrett 8 festgehalten wird. Will man die Reißschiene verschieben, so drückt bzw. verschwenkt man den Klemmhebel 5 entgegen der Wirkung der Feder 6 ein wenig aus der Nut, wodurch die Klemmung aufhört.The drawing board 8 is provided on its lower part with a longitudinal groove g, in which the clamping lever 5 engages with its rollers 7, whereby the tear bar is held on the drawing board 8. If you want to move the tear bar, press or if the clamping lever 5 is pivoted a little against the action of the spring 6 out of the groove, whereby the clamping stops.

Die Scheibe i ist weiterhin mit einer Gradeinteilung versehen, so daß man die Schiene infolge einer Fixierschraube io in verschiedene Schrägstellungen einstellen kann.The disk i is also provided with a graduation, see above that the rail as a result of a fixing screw io in different inclinations can adjust.

Claims (1)

PATENT-ANspRUcH: Reißschiene, beiwelcherderReißschienenkopf durch einen leicht abnehmbaren und in eine an der Unterseite des Reißbrettes befindliche Nut eingreifenden, federnden Klemmhebel festgehalten wird, dadurch gekennzeichnet, daß die an der Unterseite des Brettes befindliche Nut (g) an der dem Reißschienenkopf (i) zugekehrten und die Klemmfläche für die Röllchen (7) bildenden Seite derart keilförmig verlaufen ist, daß die Reißschiene gleichzeitig an die Oberfläche und gegen die Seitenkante des Brettes gepreßt wird.PATENT CLAIM: tear bar, in which the tear bar head passes through one easily removable and one on the underside of the drawing board Groove engaging, resilient clamping lever is held, characterized in that that the groove (g) on the underside of the board corresponds to that of the tear rail head (i) facing and the clamping surface for the rollers (7) forming side in this way is wedge-shaped that the tear bar at the same time to the surface and is pressed against the side edge of the board.
DEG53684D Tear bar Expired DE376843C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG53684D DE376843C (en) Tear bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG53684D DE376843C (en) Tear bar

Publications (1)

Publication Number Publication Date
DE376843C true DE376843C (en) 1923-06-05

Family

ID=7130579

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG53684D Expired DE376843C (en) Tear bar

Country Status (1)

Country Link
DE (1) DE376843C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561469A (en) * 1948-07-30 1951-07-24 Joseph Blasig Drawing instrument
US2574463A (en) * 1946-12-23 1951-11-13 Chapin Harold Addison T-square securing means
US5799402A (en) * 1994-05-17 1998-09-01 De Blois; Jacques Portable device for removably positioning and resetting vanishing points of perspective drawings
WO1999038660A1 (en) * 1998-02-03 1999-08-05 Alto Albright Apparatus for securing flat articles for cutting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574463A (en) * 1946-12-23 1951-11-13 Chapin Harold Addison T-square securing means
US2561469A (en) * 1948-07-30 1951-07-24 Joseph Blasig Drawing instrument
US5799402A (en) * 1994-05-17 1998-09-01 De Blois; Jacques Portable device for removably positioning and resetting vanishing points of perspective drawings
WO1999038660A1 (en) * 1998-02-03 1999-08-05 Alto Albright Apparatus for securing flat articles for cutting

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