DE79668C - - Google Patents

Info

Publication number
DE79668C
DE79668C DENDAT79668D DE79668DA DE79668C DE 79668 C DE79668 C DE 79668C DE NDAT79668 D DENDAT79668 D DE NDAT79668D DE 79668D A DE79668D A DE 79668DA DE 79668 C DE79668 C DE 79668C
Authority
DE
Germany
Prior art keywords
legs
parallel
compass
screw
washer
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.)
Active
Application number
DENDAT79668D
Other languages
German (de)
Publication of DE79668C publication Critical patent/DE79668C/de
Active legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00Circular curve-drawing or like instruments
    • B43L9/16Features common to compasses, dividers, and callipers
    • B43L9/22Leg-angle adjusting-means separate from pivots

Landscapes

  • Bolts, Nuts, And Washers (AREA)

Description

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. Der neue Parallelzirkel hat zwei Schenkel a und a\ welche im Konus b und bl drehbar sind. Die Schehkelspitzen sind so construirt, dafs sie herausgenommen und Feder-, Nadel- und Bleieinsätze erhalten können. Beide Konusse b und b1 sind mit einer in der Mitte mit einem Scheibchen c versehenen Doppelschraube d und d1 verbunden, durch deren Drehung die beiden Schenkel α und al einander vollständig genähert und von einander entfernt werden können, wobei sie stets senkrecht (einander parallel) stehen. Zum Drehen der Schraube dient das Scheibchen c. Nach oben sind die Schenkel entweder mit einer Feder e oder einem Schenkelkopf verbunden. The new parallel compass has two legs a and a \ which can be rotated in the cone b and b l. The shackle tips are so constructed that they can be taken out and inserts with feathers, needles, and lead can be received. Both cones b and b 1 are connected with a double screw d and d 1 provided in the middle with a washer c , through the rotation of which the two legs α and a l can be completely approached and removed from each other, whereby they are always perpendicular (to each other parallel). The washer c is used to turn the screw. At the top, the legs are connected either with a spring e or a leg head. Diese Vorrichtung zur Parallelstellung und Oeffnung der Schenkel kann an jedem beliebigen Zirkel angebracht werden.This device for parallel positioning and The opening of the legs can be attached to any compass. Der Zirkel steht in jeder beliebigen Stellung immer fest; wodurch selbst beim Steinzeichnen für lithographische Arbeiten die gröfste Genauigkeit erzielt werden kann. Daneben zeichnet sich der Parallelzirkel noch durch Einfachheit der Construction und bequeme, sichere Handhabung aus.The circle is always fixed in any position; whereby even with stone drawing the greatest accuracy can be achieved for lithographic work. Besides the parallel circle is characterized by its simplicity of construction and convenient, safe handling. Pateνt-Ansprüch:Pateνt claims: Ein Zirkel, dessen beide in Körnern (b und bl) drehbare Schenkel α und a1 durch eine Doppelgewindschraube d und d1 stets parallel zu einander stehend geöffnet werden können.A compass whose two legs α and a 1 , which can be rotated in grains (b and b l ) , can be opened while standing parallel to each other by means of a double-threaded screw d and d 1.
DENDAT79668D Active DE79668C (en)

Publications (1)

Publication Number Publication Date
DE79668C true DE79668C (en)

Family

ID=352288

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT79668D Active DE79668C (en)

Country Status (1)

Country Link
DE (1) DE79668C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451831A1 (en) * 1979-03-20 1980-10-17 Bras Jean Precision compass for drawing - has bar fitted to one hinged leg near joint with end passing through other hinged leg for fixing nut
EP0046830A1 (en) * 1980-08-27 1982-03-10 Jean Bras Precision compass with articulated legs and rigid cross-bar

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451831A1 (en) * 1979-03-20 1980-10-17 Bras Jean Precision compass for drawing - has bar fitted to one hinged leg near joint with end passing through other hinged leg for fixing nut
EP0046830A1 (en) * 1980-08-27 1982-03-10 Jean Bras Precision compass with articulated legs and rigid cross-bar

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