MACHINE A EVIDER ET AIGUISER LES SCIES CIRCULAIRES

MACHINE FOR GUMMING AND SHARPENING CIRCULAR SAWS

Revendications

Claim.lst. A machine for gumming, sharpening and jointing saws, consisting of the frame-work E B B1 a driving shaft D journalled at the rear thereof near the base, driven by fast and loose pulleys DII carrying fan pulley DIII, and cone pulley DI driving a cone pulley R1, with pulley R11 sleeved and running loose upon the rocking shaft R, journalled above and forming the pivot of the swing frame Y having its rear fork-arms p1 secured upon it by set screws,- and having the emery wheel shaft WI with pulleys W11 journalled in its front fork-arms p. said shaft WI carrying the emery wheel W in the front midway between the frame ends, said swing frame controlled vertically by a counterbalanced lever L pivoted upon a shaft LII, and connected to the swing frame by a link 1, a post P pivoted midway between the frame ends upon the base plate B, and the apex of a triangular frame A at the top, the center line of the pivots intersecting the center line of the emery wheel shaft WI, the post cranked to allow room for the emery wheel, the lower part of said post fitted with a screw Q actuated by means of a handle QI and mitre gear, and controlling a slotted cross bar C clipped to the post, and provided with a cross slide carrying the saw arbor, said post controlled by a lever PII, engaging the same at the top by pins pI II, and its tail end capable of engaging notches in a segment All, secured upon the frame A, a fan F with discharge tube F 111 driven by the pulley D111 and having its suction mouth extended forward partly encasing the emery wheel, and forming a guard F111 hung to the top journal of the post P,by a bolt f. 2nd. The combination of the post P, pivoted at the front of the machine midway between the frame ends, the center line of the journals intersecting the center line of the emery wheel shaft WI, the post cranked above at p and controlled radially by a lever p11 pinned to the top part of the upper journal, the post provided with a flat foot pI having a semicircular pivot pi working in a circular step of which three quarters are out away in the front, the semicircular pivot being held in the quarter step by a pin d11 in the bed-plate engaging a semicircular groove p111 in the flat face of the foot, the post provided with a screw carrying a cross bar C and actuated by a handle 01 through the entire wheels q and qI. 3rd. The cranked post P having a flat foot P1 with a semicircular pivot pI, in combination, with a step in the bed plate B, the front half or three quarters of which are cut away, a pin P11 in the bed-plate engaging a circular groove p111 concentric with the centre of the pivot pi. 4th. The cross bar C clipped to the post P. and slotted longitudinally to receive a slide block T, carrying the saw arbor and controlled by a screw Q, journalled on the post P and actuated by a handle Qi through the mitre gear q and q1 5th. The cranked post P, journalled at the top in the apex of a triangular frame A, and having attached within the gap a wheel guard F1ll by means of a bolt f passing through said journal. 6th. The combination of the swing frame Y, forked in front and rear, the hubs of the rear prongs secured by set screws upon the rocking shaft R, the emery wheel shaft Wi journalled upon the ends of the front prongs, said swing frame connected to a counter balanced lever L by a link 1. 7th. The combination of the driving shaft D, journalled at the rear of the frame work near the base, the rocking shaft R journalled upon the free end of a swing frame Y, with the rocking shaft R as a pivot, and the fan F. 8th. The combination of the driving shaft D having cone pulley Di, driving cone pulley RI sleeved upon the rocking shaft R and between the hubs of the swing frame Y, and running loose thereon. and having a pulley R11 driving a pulley WII upon the emery wheel shaft. 9th. In combination with a emery wheel W upon a shaft WI, journalled upon a swing frame Y controlled by counterbalanced upon lever L, the fan F having its suction mount F11 extended to partly encase said emery wheel and form a guard F111uspended by a bolt f passing through the upper journal of the pose P, and producing a draft and discharging the same through the tube Fl11, all substantially as described and for the purposes set forth.