US1825041A - Sawing machine - Google Patents

Description

G. BABARE SAWING MACHINE 2 Sheets-Shea 1 Filed March 29, 1929 gwomto'o Sept. 29, 1931. G. BABARE sAwIN MACHINE Filed March 29 1929 2 Sheets-Sheet 2 Patented Sept. 29, 1931 UN s . n ages BABARE, or 'rnconnlwesnrneron 4 swim mncninn 7 asmanian" filed acs 29,

This invention is directed to an i'mprovev ment in sawingimachineswherein the log is trimemd onits upper and lower surfaces to a comparativ-elysquare surface'and there- 6 after and in the same machine presentedto thesaws. c i

The primary object of the present invention is the provision ofa unit machine of this type in which the'irreg ularly" shaped log may be automatically handled and cut with the minimum loss of timber to present fiat upper and'lower surfaces which are rigidly held and guided throughfthemachine and presented to thesaws torthe sawing opera? tion. r i

Afurther object of the'present invention is the' provisio'n of "means-whereby. the log trimming elements, -'particularly for e the upper surface thereof, areadjustable to accommodate logs of different d-iameters'and toinsure that'the log, when in the machine, will be guided rigidly along predetermined lines during the operation-of the machine parts. i i I g I i i l A further objectof thei invention is a provision of means by-which'the cutting elementsfor the lower surface of the 1 may be permitted anadjustable-cut through the adjustment of log supporting elements. w

A :further object of-thetinvention is the provision of a machine in which the guiding, cutting and sawing instrumentalities are associated'in' a relatively small, compact'unit, whereby to permit the carryinglout. of the i successive operations in close j order, to

thereby avoid reliandlingigoi the log as is usually necessary vwhere the describedjoperations are the product of several independent machines.

The invention is illustrated in the accompanying drawings, in which: i

Figure l isa View in side elevation of the improved machine.

L Figure 2 is a sectionon' line 2-. 2 of Fig- 111-91, 1 v

The improved machine comprises, a main frame 1 of appropriate length and width the bed plate 2 of which is designed to support afplurality of rollers 3 on which the log, in-

- dicated at 4;, is supported and guided during such log.

tending forwardly of the machine.

1929." SerihlINo. 351,029.

and following the. respective operations. "on- "In advanceof the foremost guiding roller '3, the bed plate=2 is of reduced height at 5 and supported on the bed plate between the at upper and lower levels thereof. is a'rotating cutter. 6, which :may be in the iorm of the usual hog. 1 i Immediately in advance of the cutter 6 there is an adjustablebed block '7 supported 6H on the reduced height bedplate 5 by rollers 8 which are eccentrically mounted at 9 on the bed block; with said rollerscontrolled by a manually operable-lever connection .10 ex- G51 ln advance ofi the bed block 7 there is l mounted a feed belt 11 including a metallic belt structure mounted on rollers 12 and suitably driven to advance the log-to the machine. llhe -opposite end of'the belt (not to rotatably supported the lower end. of a threaded r0d14 vThis screw rod 14 is driven through a worm and pinion connection 15-at the upper end, with such worm and pinion 1 .0

connection operated-from an appropriately driven"pullev or sprocket wheel 16. v

-A*slide 17 is designed for threaded connection with the screw rod 14' and held against rotation with the rod throughsliding 8.5 cooperationwith a plain upright rod -18esupported adjacent andin parallelism with the screw rod. Carried by the slide17 and ex- -The rear'end of the arm 19 is provided *with acutter- 22 which'maybe aconventional hog, the operating plane of which is below that ofithe knot cutter 20; A; chip breaker 23 is'I-mounted in the arm 19 in advanceof the 'hog- 22 to prevent slivers being tornoff in the Op ration of. the hog.

are arms 24: and 25, the latter being of greater length than the former and each being terminally provided with a guide roller 26. The guide rollers 26 are driven by the mechanism illustrated at 27 including a vertical shaft 28 and bevel pinion connections to and from said shaft for the operation of belts or sprocket chains for driving the respective guide rollers.

from a suitable source of power by means of belt wheels 30 while the shaft 31 of the upper hog 22 is driven by motors 32' and. 33..

The motor shafts are provided with sprockets 34 by which the various guide rollers 21 and 26 of the upper frame and also the knot cutter 20 mavhepositively driven. The lower guide rollers 3 are connected for unitary movement and are driven through frictional member 35 eccentrically mounted at 36"and controlled by a hand lever 37 for actuating these guide rollers at will;

Toward the rear or delivery end'of the machine there is mounted on the bed late 2 a shaft 38 on which are mounted saws 39 which are adjustable and of course to be'pr'ovided in appropriate number so as to divide-the log vertically into boardsof appropriate thi kness, or into sections of appropriate width. The saw shaft is appropriately driven and in the proper direction by belt connections (not shown.. a In the useof the machine, the log in its normal irregular form, trimmed only tothe extent of removing branches and like projec- I tions. is delivered onto the belt 11 and advanced into the machine. 'The bed block 7 is adjusted so as to control the, cutting depth of theolower hog 6 and as the log advances, this lower hog trims away the lower surface of the log to present a more or less flat surface for accurate guiding on the lower feed rollers 3.' The slide 17 having been vertically adiusted to the required height for the par ticular log through the set works screw 1 4'. it is apparent that asthe log advances the knot cutter 20 will sever the protuberances or knots from the upper surface of the log, presenting comparatively smooth surfaceon which the guide roller 21 mav firmly bear toinsure a proper rigid guiding of the log. As the log advances, the upper hog 22 cuts away the .material to define a smooth. broad. upper sur- .face parallel to the lower surface.

This

. smooth upper surface is finally engaged by the guide roller 26 of the arm 24 andrfinallv --reaches the saws by which the'log is divided, .the log beyond the saws and in divided conditio n being'heldv rigidly'in place by the final guide roller 26.

Thus, the log by the upperand lower guiderollers which, as previously explained, are positively driven.

throughout, all of its opera tions is firmly guided and positively moved The log is thus fed to its work and the effective upper and lower hogs square the surface so that when finally divided by the saws, the

resultant products are pure rectangles having parallel sides and parallel upper and lower edges. The log is thus completely surfaced and divided in a comparatively small, compact machine, all operating instrumentalities of which are under manual control to e y their tonthelog both as to the eX- The shaft 29 of the lower hog 6 is driven tent of cut and asto' the rapidity with which the log is moved through the machine.

What is claimed to be new is:

mounted therein for feeding the log into the operative plane of'the saw, a cutter for the lower surface ofthe log'arranged in advance of the feed rolls, a threaded post rotatably mounted in the frame, an arm having threaded connection with the post to permit vertical adjustment of the arm in the rotation of the-post, an upper log cutter carried bythe arm, a pressure roll carried by the arm, and

knot cutter carried by the arm.

* 2. Ina sawing machine, a's aw, a plurality of positively driven feed rolls to advance the log into the'operative plane of the saw,a conveyor by which the log is-delivered to the feed rolls, a cutter for squaring the lower surface I of the log arranged intermediate the conveyor and feed-rolls, and a cutter for squaring. the upper surfaceof the log arranged intermediate the lower cutter and the saw, the "lower cutter acting to square the log :for proper bearing on the feed rolls to resist the operative pressure of the upper cutter. V Y

3. In a sawing machine, a saw, a plurality of positively driven feed rolls to advance the log into the operative plane of the'saw, a conveyor by which the log is delivered to the feed rolls, -a cutter for squaring thelower surface of the'log arranged intermediate the conveyor and-feed rolls, a cutter for squaring the upper surfacefof the log arranged interme-' diate the lower cutter and the saw, the lower cutter actingfto square the log for proper bearing on the feedrolls to resist theoperative pressure of the upper cutter and means for adjusting the log with respect to the lower 5 cutter to vary the cutting depth of the latter. 4. In a sawingmachine, a saw, aplurality of positively driven feed rolls to advance the log into the operative plane of the saw, a conveyor by which the log is delivered to the feed rolls, a cutter for squaring the lower surface of the log arranged'intermediate the conveyor and feed rolls, a cutter for squaring the upper surface of the log arranged intermediate the lower cutter and the saw, the lower, cutter acting to square the log for proper bearing onthe feed rolls to resist'the operative pressure of the upper cutter, and

means forfmanually adjusting the I cutting depth of the upper cutter. I 1

Jan

5. In a sawing machine, a saw, a plurality of positively driven feed rolls to advance the log into the operative plane Y of the saw, a conveyor by which thelog is delivered to the feed rolls, a lower squaringcutter for the log operating between the conveyor and saw, a

- bed block to support the log intermediate the conveyor and lower cutter, means for adjust ing the bed block to therebyvary the cutting depth of the lower cutter, and an upper cutter operating between the lower cutter and saws,

said upper cutter acting on the upper surface of the log in line with one of the bearing rolls the bed block to thereby vary the cutting a depth of the lower cutter, an upper cutter operating between the lower cutter and saws,

said upper cutter acting on the upper surface of the log in line with one of the bearing rolls on which the squared lower surface of the log is traveling, and means for adjusting the upper cutter to varyits cutting depth.

Invtestimony whereof I affix my signature.

GEORGE BABARE. [1 s]

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