447 International Standard (ISO Machine tools Direction of operation of controls Machines-outils--Sensdemanceuvredes organesdecommande Second edition - 1984-05-15 UDC 621.9.06-3 Ref.No. ISO 447-1984 (E) ISO 447-1984 Descriptors :machine tools, control equipment,levers, wheels,direction (of movement),orientation. Price based on 2 pages Copyright Intemational Organization for Standardization Ited without license from IHS Not for Resale Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of developing international Standards is carried out through Iso technical committees. Every member body interested in a subject for which a technical committee has been authorized has the right to be represented on that committee. International organizations, governmentat and non-governmental, in liaison with iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Councit. International Standard ISO 447 was developed by Technical Committee ISO/Tc 39, Machine tools. The first edition (ISo 447-1973) had been approved by the member bodies of the following countries : Austria Greece Poland Belgium Hungary Spain Czechoslovakia epui Sweden Denmark Italy Switzerland Egypt, Arab Rep. of Japan United Kingdom Finiand Korea, Rep.of USA France Netherlands USSR Germany, F. R. New Zealand Yugoslavia The member bodies of the following countries had expressed disapproval of the docu- ment on technical grounds : Philippines South Africa, Rep. of This second edition, which cancels and replaces Iso 447-1973, incorporates draft Amendment 1, which was circulated to the member bodies in January 1983 and has been approved by the member bodies of the following countries : Belgium Italy Spain Brazil Korea, Dem. P. Rep. of Sweden Czechoslovakia Korea, Rep. of Switzerland France Mexico United Kingdom Germany, F. R. Poland USA Hungary Romania USSR India South Africa, Rep. of No member body expressed disapproval of the document. @ International Organization for Standardization, 1984 Printed in Switzerland n for Standardizatior tion or networking permitted without license from IHS Nt for Resale INTERNATIONALSTANDARD ISO 447-1984 (E) Machine tools - Direction of operation of controls Scope and field of application This International Standard establishes rules for the direction of operation of controls whose function is to produce movement of controlled machine tool components in one or other of two opposingdirections. Its scope does not include controls for components which Figure1 rotate continuously in the same direction during the normal functioning of the machine (such as controls for electric motors). 2 General rules If, for special reasons, the following rules cannot be applied, then the directions of operation of the control and the corre- sponding directions of movement of the controlled Figure 2 component shall be as shown on the machine indicator plate 2.1 Lever control The lever shali be so placed that for the control of a rectilinear movement, the line join- ing the extreme positions of the handle, on either side of the neutral position, is approximately parallel to the direction of Figure 3 the movement of the controlled component; for the control of a circular movement, the plane in 2.2 Push-button contro! which the lever arm rotates is parallel to that of the con- trolled component. 2.2.1 Fixed control In either case, the movement of the lever shall produce a move- ment of the controlled component in the same direction The line of push buttons shall be placed parallel to the move- ment of the controlled component and the operation of the This rule is valid for the control of movements produced right-hand button, or the furthest button or the top button, manually (figure 1), as well as for starting automatic mo