DE75982C - Compass joint with balls - Google Patents

Compass joint with balls

Info

Publication number
DE75982C
DE75982C DENDAT75982D DE75982DA DE75982C DE 75982 C DE75982 C DE 75982C DE NDAT75982 D DENDAT75982 D DE NDAT75982D DE 75982D A DE75982D A DE 75982DA DE 75982 C DE75982 C DE 75982C
Authority
DE
Germany
Prior art keywords
joint
balls
circular
gait
rotation
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 - Lifetime
Application number
DENDAT75982D
Other languages
German (de)
Original Assignee
G. schoenner in Nürnberg, Gartenstrafse 7
Publication of DE75982C publication Critical patent/DE75982C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B43L9/20Pivots

Landscapes

  • Pivots And Pivotal Connections (AREA)

Description

AUSGEGEBEN DEN 2. JULI 1804.ISSUE JULY 2, 1804.

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. Die vorliegende Erfindung betrifft eine Verbesserung an Zirkelgelenken, durch welche denselben ein im hohen Grade sanfter und gleichmäfsiger Gang verliehen werden soll. Es wird hierbei die in allen Zirkelgelenken bekannter Art auftretende gleitende Reibung in rollende Reibung umgewandelt und zur Erreichung des angestrebten Zweckes zwischen die einander zugekehrten Flächen des Gelenkes eine Anzahl von Stahlkugeln, wie solche bei Kugellagern gebräuchlich sind, lose eingelegt. Die beiden Hälften des Gelenkes werden sodann vermittelst eines elastischen Bügels so mit einander verbunden, dafs die Drehung über den Kugeln stattfindet und der Gang des Gelenkes den jeweiligen Anforderungen entsprechend regulirt werden kann.The present invention relates to an improvement in circular joints by which they are to be given an extremely gentle and even gait. It the sliding friction that occurs in all circular joints of the known type is in this case in rolling friction converted and to achieve the intended purpose between the facing surfaces of the joint have a number of steel balls, such as those at Ball bearings are commonly used, loosely inserted. The two halves of the joint are then connected to one another by means of an elastic bracket so that the rotation is over the balls takes place and the gait of the joint according to the respective requirements can be regulated. In Fig. ι und 2 der Zeichnung ist ein nach der neuen Erfindung ausgeführtes Zirkelgelenk dargestellt und es besitzt dasselbe folgende Beschaffenheit:In Fig. Ι and 2 of the drawing is a designed according to the new invention circular joint and it has the following properties: Die beiden Hälften α und b des Zirkelkopfes sind an der Innenseite ax bezw. bi mit kreisrunden Rinnen c und d versehen, in welche eine Anzahl kleiner Stahlkugeln e lose eingelegt sind. Die Tiefe der Rinnen ist so bemessen, dafs die Flächen ax bezw. b1 sich nicht berühren können und die Drehung des Gelenkes über den Stahlkugeln stattfindet. Beide Hälften des Zirkelkopfes sind durch einen Bügel f mit Druckschrauben g gx so mit einander verbunden, dafs mit Hülfe dieser Schrauben die Platten a und b mehr oder weniger stark zusammengeprefst werden können und demgemäfs der Gang des Gelenkes regulirbar ist. Es ist einleuchtend, dafs infolge der Drehung über den rollenden Kugeln der Gang des Gelenkes ein sanfter sein mufs und dafs insbesondere der bei Zirkelgelenken so häufig vorkommende sogenannte todte Gang oder das Klemmen vollständig ausgeschlossen ist. Natürlich kann die Ausführung des Gelenkes auch eine derartige sein, dafs nur die eine Hälfte der gelenkig verbundenen Theile eine Rinne zur Aufnahme der Kugeln enthält, die Innenfläche der anderen Hälfte hingegen glatt bleibt.The two halves α and b of the compass head are respectively on the inside a x. b i provided with circular grooves c and d , in which a number of small steel balls e are loosely inserted. The depth of the grooves is so dimensioned that the surfaces a x respectively. b 1 cannot touch each other and the rotation of the joint takes place over the steel balls. Both halves of the compass head are connected to each other by a bracket f with pressure screws gg x so that with the aid of these screws the plates a and b can be more or less strongly pressed together and accordingly the movement of the joint can be regulated. It is evident that, as a result of the rotation over the rolling balls, the gait of the joint must be gentler, and that especially the so-called dead gait or jamming, which so frequently occurs in circular joints, is completely excluded. Of course, the design of the joint can also be such that only one half of the articulated parts contains a groove for receiving the balls, while the inner surface of the other half remains smooth. Patenτ-Ansprdch:Patent claim: Ein Zirkelgelenk, bei welchem eine Anzahl Kugeln zwischen die einander zugekehrten Gelenkplatten (a b) eingelegt und diese letzteren vermittelst eines Bügels (f) so mit einander verbunden sind, dafs die Drehung des Gelenkes über diesen Kugeln stattfindet und der Gang des Gelenkes regulirbar ist.A circular joint in which a number of balls are inserted between the facing joint plates (ab) and the latter are connected to one another by means of a bracket (f) in such a way that the rotation of the joint takes place over these balls and the movement of the joint can be regulated. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT75982D Compass joint with balls Expired - Lifetime DE75982C (en)

Publications (1)

Publication Number Publication Date
DE75982C true DE75982C (en)

Family

ID=348907

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT75982D Expired - Lifetime DE75982C (en) Compass joint with balls

Country Status (1)

Country Link
DE (1) DE75982C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656836A1 (en) * 1990-01-05 1991-07-12 Longet Roland Apparatus for measuring inclines by direct reading, or for drawing angles chosen in advance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656836A1 (en) * 1990-01-05 1991-07-12 Longet Roland Apparatus for measuring inclines by direct reading, or for drawing angles chosen in advance

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