Patent GB-190224622-A (GB)
Title: Improvements in Planing Machines.
Inventor: KELLOW MOSES
Filed: 1902-11-10
Granted: 1903-10-15
Abstract: 24,622. Kellow, M. Nov. 10. Planing.-A machine for planing metals &c. is arranged so that the motion of the principal rotating parts is always in the same direction, and the table g, Fig. 1, is fitted with a hinged plate v on to which the cuttings fall. At the end of each return stroke of the table, the curved supporting- rails v<2> allow the plate v to dip and tip the cuttings clear of the bed. The shaft b, Figs. 3 and 5, carrying the pinion b<1> which gears with the rack on the table, also carries the drums c' of two clutches c, c<1>, immersed in an oil bath. Round each drum is a coiled band c<3>, one end c<4> of which is fixed to the box f, while the other is connected with a tightening-lever c<5>operated by the sliding sleeve f<1>. A projection c<6> prevents the end of the band from grinding into the drum c<2>. One of the boxes f is rigid with a belt pulley d and a pinion a, and the other with an internally-toothed wheel a<3>, between which and the pinion a are two idle wheels a<1>, a<2>. When the clutch c is engaged, the shaft b is driven directly by the belt, but when the clutch c<1> is engaged, the shaft is driven more slowly and in the opposite direction through the pinion a, and wheels a<1>, a<2>, a<3>. In the first of the three methods described for operating the clutches, the levers k<2> are connected by a rod k, a bell-crank lever and another rod, to a lever on the shaft j<2>, Fig. 1, which is connected by a lever j<1> and slot-ended rod j with the lever h carrying the rollers h<1>, h<2> for engaging with the stops g<1>, g<2> on the table g. The lever h is coupled by a rod i<1> with a lever i pivoted at i', a paddle immersed in water being fixed to the bottom of the lever i, and a spring i<3> to a point above the fulcrum i<2>. The slot-ended rodj allows the stops g<1>, g<2> to move the levers 4, i into vertical positions without moving the clutches, one of which is then rapidly disengaged and the other engaged by the spring i<3> which has passed its dead centre. According to the second method, the lever i and paddle are replaced by a piston and cylinder, the two ends of which are connected by a pipe fitted with a cock. A hand-lever for starting and stopping the machine is secured to the shaft j<2>. According to the third method, the stops p<2>, p<3>, Fig. 9, on the table, oscillate a vertical shaft p' connected by links and levers with a cranked shaft q. A spring q', Fig. 11, is attached to the crank q<1> of the shaft q which carries a short lever linked to a lever q<5>, so that when the crank q<1> passes the dead centre, the spring q' pulls one of the friction rollers q<8>, q<9> into contact with the wheel a<3>. The wheels q<8>, q<9> being in contact, motion is transmitted either through the wheel q<8> or the wheels q<9>, q<8>, the wheel r, Fig. 9, on the spindle of the wheel q<8>, and the wheel r<1> to the shaft q<6> which carries two cams s for operating the clutches. The motion of the shaft q<6> is stopped by pins on the levers k<2> engaging the ends of the slots t<3>, Fig. 12, in the bar t, and moving the same, the inclines t<2> causing the lever q<5> to be moved into its mid position and consequently both wheels q<8>, q<9> out of contact with the wheel a<3>. The lover q<5> may also be operated by the handlover u'.