Portable electromagnetic tool assembly

Claim 1

IN A PORTABLE TOOL ASSEMBLY, THE COMBINATION WITH AN ELECTRIC MOTOR HAVING A GENERALLY CYLINDRICAL MOTOR HOUSING THE AXIS OF WHICH EXTENDS HORIZONTALLY AND FROM WHICH THERE PROJECTS FORWARDLY AND ENDWISE A ROTATABLE MOTOR SHAFT, A HORIZONTALLY RECIPROCABLE TOOL-SUPPORTING SLIDE MEMBER, A PINION MOUNTED ON SAID MOTOR SHAFT, A RING GEAR MESHING WITH SAID PINION AND ROTATABLE ABOUT A VERTICAL AXIS, AN ECCENTRIC SHAFT ON SAID RING GEAR, SAID SLIDE MEMBER BEING FORMED WITH A TRANSVERSE SLOT THEREIN THROUGH WHICH SAID ECCENTRIC SHAFT PROJECTS FOR TRANSLATING ROTARY MOTION OF THE RING GEAR INTO LONGUTIDINAL RECIPROCATION OF THE SLIDE MEMBER, OF A THREE-PART CASING FOR SAID MOTOR, PINION AND RING GEAR AND INCLUDING A CENTRAL CASING PART OF GENERALLY RING-LIKE DESIGN, A FRONT CLOSURE CAP TELESCOPICALLY RECEIVED OVER A LIMITED FRONT RIM REGION OF THE CENTRAL CASING PART AND A REAR CLOSURE CAP TELESCOPICALLY RECEIVED OVER A LIMITED REAR RIM REGION OF THE CENTRAL CASING PART, SAID CENTRAL CASING PART BEING PROVIDED WITH OPPOSED UPPER AND LOWER MOTOR-CONFINING SURFACES BETWEEN WHICH SAID MOTOR HOUSING IS DISPOSED, COOPERATING MEANS ON THE CENTRAL CASING PART AND REAR CLOSURE CAP FOR PREVENTING AXIAL SHIFTING OF THE MOTOR HOUSING WITHIN THE CASING, SAID CENTRAL CASING PART BEING FORMED WITH A FORWARD EXTENSION WHICH PROJECTS INTO THE FRONT CLOSURE CAP AND OVERLIES THE BOTTOM WALL OF THE LATTER, SAID FORWARD EXTENSION BEING FORMED WITH A VERTICAL BORE THEREIN, A SHAFT CARRIED BY SAID RING GEAR AND ROTATABLY JOURNALLED IN SAID VERTICAL BORE, THERE BEING AN OPENING IN THE FORWARD END OF THE FRONT CLOSURE CAP THROUGH WHICH THE SIDE MEMBER EXTENDS, COOPERATING MEANS ON THE CENTRAL CASING PART AND FRONT CLOSURE CAP CONS RAINING SAID SLIDE MEMBER TO MOVE IN ITS HORIZONTAL PATH OF RECIPROCATION, THE FORWARD END OF THE SLIDE MEMBER EXTERIORLY OF THE CASING BEING PROVIDED WITH MEANS FACILITATING ATTACHMENT THERETO OF A POWER TOOL, AND A FLEXIBLE LEAD-IN CONNECTION FOR SAID ELECTRIC MOTOR EXTENDING THROUGH SAID REAR CASING CAP.