ES277699U - Useful of layout for drawing and labeling (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Drawing tool for drawing and lettering, which being of the type that are constituted from a tubular envelope as a means of assembling the other elements, among which has an inner tube that determines a concentric deposit and axially has another tube of small diameter forming a control siphon, being coupled to the reservoir tube, on one of its ends, a carrier body carrying a counterweight, the tracing tip and a pair of magnets that form a magnetic device that it constantly pushes the tip of the tracing needle towards the outside, these magnets also fulfilling the function of avoiding a second drop, when in the decompression function the apparatus is put from its inverted position to its normal position, while at the same time said support body is coupled by screwing at the opposite end a push button capable of driving a determinative mechanism of a pump, esen it is characterized in that the pump mechanism is constituted from a tubular body coupled on the respective end of the tubular pump tube inside the tubular casing; with the particularity that said pump body has in its interior a piston provided with a hermetic seal and from which emerges at one of its ends a section of axial rod on whose free end the push button itself strikes, while on the other end from said piston there emerges another section of axial rod that is complemented by an expansion spring whose ends abut against the piston itself and against a staggering provided in an area near the lower end of the pump body; it being provided that the aforesaid spring pushes the piston towards the bottom of a cover coupled to the upper end of the pump body, through which the upper shaft section is through which the cover is through. (Machine-translation by Google Translate, not legally binding)