US155479A - Improvement in lath-sawing machines - Google Patents

Description

s. c( WEBER.' La-th Sammy-Machines.

Patented Sept. 29,1874.

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PATENT SAMUEL O. WEBER, OF PATTERSON, OHIO.

IMPROVEMENT IN LATH-SAWING MACHINES.

Specification forming part of Letters Patent No. 155,479, dated September 29, 1874 application tiled July 18, i874.

To all whom it may concern:

Be it known that I, SAMUEL C. WEBER, of Fatterson, in the county of Hardin and State of Ohio, have invented a new and Improved vlatter on the former.

Similar letters ot' reference indicate corresponding parts.

The invention will rst be fully described, and then pointed out in the claims.

In the drawing, A represents the main sawframe, which is constructed of the usual size and strength, and, preferably, built stationary on the mill-floor. It supports the rotating shaft of the circular saw B, and the drivingsha-ft C with pinion G1 at front end, motion being imparted toboth by belt and pulley connection in the usual manner. The pinion C1 of the driving-shaft gears with a feed-rack, O2, of the saw-carriage D, which moves by flat and V-grooved rollers on/eorresponding rails ot' the adjustable way-frame E. The vertical supporting-posts a, as well as the lateral conneetingpieees b, of way-frame E are slotted and acted upon by strong set-screws for the adjustment of the way-frame, and with it of the carriage D, in vertical direction, as required by the gradual wearing out of the saw, so that the same can be used for a considerable length Vot' time without necessitating a new blade.

The way-frame is', furthermore, placed under a certain inclination toward the saw, for the purpose of offsetting or neutralizing the tendency of the lower part of the saw to crowd or hurry the feed motion of the carriage. The return of the carriage for the next cutting is thereby also facilitated to a certain extent. In connection with the adjustable way-frame, it is necessary to change the position of the driving-shaft and pinion in the same proportion, which is done by means of slotted journal-boxes with set-screws. Upright posts E at both ends of way-frame E dene, by means of suitable adjustingscrews d, the exact extent of motion in either direction, and throw, by means of a sliding'feedbar, F, of carriage E, the feed-rack C2 in or out of gear with the pinion O1. The front post E1 is also provided with a suitable spring or rubber cushion, d', for taking up the shock or concussion of the saw-carriage when returning to the same, by the action of spiral springs, weight, and pulley or equivalent device c, for being fed again to the saw. The saw-carriage D is constructed with top or upper head-blocks f, preferably made of light metallic blocks, and provided 'with knees and dogs to hold the bolts or blocks thereon, and also with the usual lever and ratchet-feedin g devices. The upper head-blocks f are made of several detaehable pieces for adjusting the relative height of the blocks to the saw, in connection with the raising or lowering of the way-frame E. The upper head-blocks f are supported on upright posts g, which are secured into the truck or base frame h, and serve as lower head-blocks for securing a series of planks thereto. The height of the saw-carriage is determined by the size of the saw, the dimensions being such that a block is fed by the upper head-blocks to the upper section of the saw, while'the planks are fed by the lower part to the lower section of the saw, and thereby,

through the action of one saw, is produced the simultaneous ripping of the blocks into planks, and of the planks into laths. 'Ihe planks are fed by means of feed-rollers l, one of which is provided with a band-spring, l1, and sliding bearing for adjusting itself readily to the inequalities of the planks, and admitting the introduction of the saine. The feed-rollers lare operated by ratchetwheels Z2 and Xed pawls Z3 of the sliding feed-bar F, simultaneously with thethrowing into gear of the carriage after its return to the beginning post of the way-frame. The feed-bar F acts also by means of small friction-rollers m, which turn, at the ends of downward-extending bearings on of bar F, on recesses n at the upper end of feed-rack G2, which is supported by strong band-springs o in slots o', and carried in downward direction by the inclines at one side of recesses n, t0 gear with pinion C1 until the contact of the feed-bar F with the end post E releases the feed-rack, and produces the return of the saw-carriage by the throwing out of gear of feed-rack and pinion. 'lhe sliding feed or gear bar is also provided with Va suitable lever mechanism at the front end for throwing the rack-bar instantly out of gear, and interrupting thereby the operation of the machine.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The laterally-tilting way-frame E, com-

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