ES198372U - Improvements in the construction of goniometers for drawing appliances. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in the goniometers for drawing devices, characterized, essentially, by integrating the dividing and advancing mechanism based on the coaxial arrangement and superimposed on the conventional graduated circle of a triangular corrective plate that has circular holes near its vertices, operative to be combined respectively with the concentric protruding sleeve, arranged in the graduated circle and the remaining ones with a correction cam and a threaded pin with respect to which the corrective plate can rotate, in a non-complete sector, also integrating the correction mechanism with a bushing of unión of the elements that make up the aforementioned mechanism, integral bushing that is configured on the basis of a hollow cylinder that at its base presents an operative interrupted value for the passage in said area of a flat slide with parallel sides that at one of its ends presents a window to receive the end of an arm of thrust, continuing the slide in two branches with a tendency to separate, at the ends comprising two half parts that form a split curia whose apex of attack points towards the window, above the flange extends the structure of the cap based on a brief interrupted hollow cylindrical portion that presents internally and facing each other operative recesses that is inserted in those and then turns, prolonged portion of cap that is inserted in the circular window of the support tray being thus associated with it the described set, support tray that it presents two operative branches to receive the conventional rules that determine the square of the drawing apparatus. (Machine-translation by Google Translate, not legally binding)