Adjustable stroke length, reciprocating tools

This invention is drawn to reciprocating power tools. It is often desirable in reciprocating power tools to be able to adjust the length of the stroke of the tool member. The invention disclosed herein comprises an inexpensive device for performing this function. In effect, a screw adjustment member...

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Bibliographische Detailangaben
Hauptverfasser:	EISENBERG, ROBERT M
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BROACHING COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING ENGINEERING ELEMENTS AND UNITS FILING GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAND TOOLS HEATING LIGHTING LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOTOTHERWISE PROVIDED FOR MACHINE TOOLS MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS MANIPULATORS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERCUSSIVE TOOLS PERFORMING OPERATIONS PLANING PORTABLE POWER-DRIVEN TOOLS SAWING SCRAPING SHEARING SLOTTING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	This invention is drawn to reciprocating power tools. It is often desirable in reciprocating power tools to be able to adjust the length of the stroke of the tool member. The invention disclosed herein comprises an inexpensive device for performing this function. In effect, a screw adjustment member having a hand knob is mounted in the tool housing and when rotated changes the position of one end of a simple lever. The other end of the lever bears against a rotating member which is mounted on the power output shaft of the tool. As this movable rotating member is adjusted, it causes a second simple lever to rotate, changing the position of the arm of the reciprocating mechanism with respect to the shaft of the power drive means. Thus, as the knob on the screw adjustment member is rotated, the swing arm length of the eccentric driven by the power source may be varied.