GB859591A - Improvements in or relating to work feeding devices for woodworking and similar machines - Google Patents

Abstract

859,591. Roller feeds for woodworking machines. SHILTON, F. Feb. 12, 1959 [Nov. 12, 1957], No. 33501/57. Class 145. A work feeding device for a woodworking machine, such as a planing machine, is in the form of a motorised unit which carries a pair of spaced driven feed rollers 14 resiliently urged into contact with a workpiece W and comprises a carriage 10 of less width than the distance between the outer faces of the rollers and a pivotal mounting 47 for the unit whereby it may be adjusted through 90 degrees about an axis approximately parallel to the direction of feed. The feed rollers 14 are mounted on a bracket 11 pivoted at 12 to the carriage 10 which also forms a support for an electric motor 23 and a housing for a gear-box 24, the rollers being urged into contact with the workpiece by a spring 15 and their height above the feed table 28 adjusted by a screw 21 ; the rollers are driven from the motor through a chain-andsprocket and gear drive 16, 17, 18, 19, 25. The pivotal mounting 47, which comprises a conical element 48 locked by a screw, connects the carriage 10 to a bracket 43 pivotally connected to an arm 40 consisting of two bars slidably mounted in a bracket 39 which is mounted for vertical adjustment through a screw 59 and handwheel 61 on a shaft 38 ; the bracket 43 is locked in the desired position by a handle 50 screw 51 and conical element 52. In order that the feeding device may be positioned at a considerable distance from the support shaft 38, the two bars may be withdrawn from the bracket 39, the latter rotated through 180 degrees, and the bars reinserted therein. The shaft 38 is pivotally mounted in a bracket 27 secured to the table 28, the shaft being provided with a tapered end engaging with a corresponding recess formed in the bracket and locked therein by a handle 57. The carriage 10 may be pivoted through 90 degrees to feed the workpiece, on its edge, against a guide-plate F and in order to press the workpiece against the table, the pivot 47 is inclined slightly downwardly towards the plane of the table. In a modification, the bracket 36, instead of being secured rigidly to the table, may be pivotally mounted in a separate bracket which is itself secured to the table. Additional feed rollers mounted on brackets secured to the carriage 10 may be provided at the front and rear of the rollers 14 and driven through a chain-andsprocket and bevel gear drives, Fig. 6 (not shown). The rollers may be serrated or fitted with yieldable tyres.