US98215A - Improvement in head-blocks of saw-mills - Google Patents

Description

2 SheetsfSheet 1.

P. J. STALEY.

BLAD BLOCK 0F SAW MILLS.

1\Io.98,215.Y Patented Deo. 21, 1869.4

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2 Sheets-Sheet 2.

F. J. STALEY.

HELD BLOCK OPSAW MILLS. No. 98,215. Patented 1360.21, 1869'.

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FRANKLIN J. STALEY, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO HIMSELE'GEORGE GEORGE H. CARTER, OF SAME PLACE.

W. JOSEPH, lsAAo s. LONG, AND

Letters Patent No. 98,215, dated .December 21, 1869.

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' IMPRovEMENT IN HEAD-BLocKs or SAW-MILLS.

The. Schedule referred to in these Letters Patent and making -Iart Of the same.

I, FRANKLIN J. STALEY, of Indianapolis, in the county of Marion, and State of Indiana, have invented p certain Improvements in Head-Blocks for Saw-Mills,

of which the following is a specification.

Nature and Objects of the Invention.

My invention relates to construction and arrangement of the device att-ached to and constituting part of the head-blocks of saw-mills, combined with the longitudinal setting-shaft usually employed for operating the knees, and a ratchet-wheel and lever and series ot pawls arranged to actuate the setting-shaft, in such a manner that both knees may be moved simultaneously toward the saw, as in sawing lumber ,of equal thickness, and so that either knee may be moved toward the saw while the other remains at rest, as in sawing tapering lumber, or logs that are larger at one end than the other and also so that the knees may be moved vin like manner quickly backward or from the saw into position to receive anotherlog, the object being to have a more complete and ready control over the movement of the knees, for the purpose of setting the log, .than heretofore.

Description of the Accompanying Drawings. Figure l is an elevation of a log-carriage andheadblocks embodying my invention.

Figure 2 is a plan view of the same. Figure 3 is a detail vertical longitudinal section of lthe device attached to and forminggpart of the headbloeks for actuating the knees.

Figure 4 is a transverse section of the same, showing the inside of 011e ofthe anges with the pawl and spring attached.

Figure 5 is an exterior view of one'of the flanges.

General Description..

A is the log-carriage, made and operated in the usual manner.

I5, the head-blocks, furnished with knees O, in the usual manner.

The device for operating the knees to set the log consists of the longitudinal setting-shaft D, which passes through a sleeve, E, litting neatly but working freely. therein, and having collars F ou the ends, one of which is made permanent andthe other to screw on so as to"be removable.

Keys e e pass through the sleeve, the inner ends projecting into a key-seat cut the entire length of the shaft. These keys prevent the sleeve and collars from ,turning on the shaft, and at the same time are so arranged as toallonE-the position of the head-blocks to be fehang'ed alongethe log-carriage, to adapt it to logs of "different lengths, at pleasure. A

Surrounding the sleeve E is a casting, G, that fits neatly and works freely thereon. The casting G has v.coge i'arouud its centre, that gear with cogs on the 'under side of the knees. The outer' ends of casting G are furnished with ratchet-cogs o, and between the ratchet-wheels and the centre .cogs are the' bearings e', in the sides of the head-blocks.

s s', fig. 2, are pawls pivoted to Ithe collars F, that engage with the ratchets o, the latter being arranged to work in opposite directions, the one on the left-opu eratin g to move the knees from the saw, and that on the right moving them toward the saw. F

The setting-shaft D is operated by double parvis, H

o on that end of the casting G, and rotating the oeufv tre cogs t,'to move the knees toward the saw.

The pawls H and I are made iu'pairs, one of which in each pair is made half the length of a tooth shorter than the/other.

By this arrangement the teeth in ratchet-wheel K l can be made double the size that would otherwise be required, thereby securing greater strength and durability of the teeth. v

The movement of the lever -J is regulated by a pin inserted in the holes R, in the segmental guides Q,

which are so arranged, in combination with the double pawls 1I andI, and ratchet-wheel K, as to regulate the movement of the knees to any desired fraction of' an inch, the advantage of which will be readily appreciated by the users of saw-mills.

By disengaging the pawl s', on the right of either of the head-blocks, and then operating theA lever J, l

the ratchets o and cogs t will not be turned, and hence the knees of l that block will remain motionless, while the knee of the other head-block will bexmoved toward the saw as usual, thus enabling me to set the log to anyl required angle to` the saw, as may be required in sawing tapering lumber, or logsl that are larger at one end than at the other. y

By diseugaging the bevel-wheel M, the shaft D may be turned Aby the hand crank-wheel P, and theknees be thus moved quicklyinto position to receive another log, orfor other purposes.

The kneeslnay also be moved back from the saw by hand, by disengaging the pawl s', on the right of the head-blocks.-

I claim, as my invention- 1. The sleeve E, furnished with the flanges F and v pawls s s and keys e e, concentric piece E, furnished with cogs i and ratchetrso, in combination 'with the Settingeshafb D, 'furnsiie' with the hand crank-wheel P andknees C, all constructed and arranged substantally as and for the purpose set forth.

2. The mtcliebwheel K, lever J, pznvis H and I, arranged in pairs, as described, in eombinntion'wt-h bevel-wheels L and M, setting-shaft D, and the device described, for operating the arranged substantially as knees C, constructed and and for the purpose set 3. The segmental arch Q, lever J, pawls H I, ratchet K, and gearsL and M, when n.11 the-pnrts are constructed and arranged ns herein specified, rand for the purpose set forth.

FRANKLIN J.. STALEY.

Witnesses: y

O. F. MAYHEW, J. MORRIsoN.

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