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Publication numberUS314876 A
Publication typeGrant
Publication dateMar 31, 1885
Filing dateAug 2, 1884
Publication numberUS 314876 A, US 314876A, US-A-314876, US314876 A, US314876A
InventorsLoeenzo Poole
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Loeenzo poole and feed p
US 314876 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model,)

L. POOLE & F. P, snow.


No. 314,876. Patented Mar. 31, 1885.



wo oo-| E.Lu-iG MACHINE.

SPECIFICATION forming part of Letters Patent No. 314,876. dated March 31. 188 5.

' Application filed August 2. 1884. (No model.) i

To all whom it may concern:

Be it'k'nown that we, LORENZO PooLE and FRED P. SNOW, citizens of the'United State's, residing at Orangefln the county of Franklin and State of lllassachnsetts, have inveuted eer tain new and useful Improvements in Peeling- Maehi nes; and we do declare the followingto be a full, clear, and exact description of theinvent-ion,snch as will-enahle'others skilled'inthe 10 art to which it a'pper'tains to uiake and use the same, relereuce. being had to the accompanyingdrawingsandto letters or figures of reference "marked thereon, which form a part of this specification;

Eigure l of the drawings is a front View Of ourdevice, and Fig. 2 is a vertical cross-sectional view of the. same.

This invention relates to a machine for peeling' -or cutting the bark from logs ofvarious sizes, or of rounding it up; and it'consists, essentially, in feeding the logs through ashort rotating cylinder into which two or more actuatingknives enter, bein attached to the inner end of radial bars, the outer ends of 2 5 which are pressed inward by springs, and are so connected together'by slotted links that the knives will all move inward or outward simultaneously, and each to the distance required.

In the accompanyingdrawings, A repre- 0- sents a hollow feeding-cylinder having the feeding-entrance a funnel-shaped and attached concentrically within and forming part of a cylindrical case, B. The cylinder Ahas journals made on its ends which have hearings in 5 and turn between the proper vertical supports b b, and radial bars, to the outward extension of which the pulleys b b arefixed. The

said bars rise from one end Of the cylinder and connect it to the inner surface of the case.

b is a ring-shaped pulley. fixed concentrically over one of the ends of the feeding-cylinder A to the extensions of the bars b and driven by a. band to make the case rotate.

C C, &c., are six similar supports rising 5 from the Outer surface of the feeding-cylinder at right angles to the same, and within the case B, and cc 0 are three nearly but not quite equidistant radial ways, each one. of whichis situated midway between two supports 0 (3,, the other ways being at similar points between other of the supports. The ways cclieto-the inner side of the barsb b, and the two bars of each way corresponding. with two bars b, which are bolted to the former to secure them inplace.

D are radial cutter-bars, each of which slides in one of the ways 0 c, and has fixed to its inner end the properly shaped cutting-knife cl. The said inner end passes through an openingin the surface of the feeding cylin'der, 63 while the Outer end ofthe bar passes through V a similar opening inthe circumferential surface of the case B, and has secured to it a roller, (2*. One of the radial bars D may have secured to its inner end-a roller, d", instead 65 of the knife d, the said roller being attached j to the inner end of a rod, (1*, which passes longitudinallythrough the bar and carries near its outeren d a guide-bar, d, a notch in the end of which engages over theedge of a .70

bar, (i fixed at right-angles to the surface of the case, the said edges being so twisted that, as the guide-bar rises when the cutteris driven outward by the increase in diameter of adog being operated on, the rod'd androll'er (I will, turn sidewise. The roller d has a sharp cuting-edg'e which cuts into the wood and acts as a feed-knife, As the stick changes in size the roller twists, so that the feeding of the stick will reinainthe same and allow the cutting or peeling knives to take off the same-sized shav- E E are three leaf-springs, each properly fixed by one end to the cylinder passing into case B by a proper opening, and withits free v end pressing on a roller, d, of one of the radial bars D, so as to force the latter inward.

F F are three links each pivoted by its inner end to the outer end of a short rod or bar, f, lying parallel against one of the cutter-bars, 9 and having its inner end pivoted to the same, as shown. Each-bar fhas on itsinner end a short slot, as shown, through which the pivot passes. This slot is to allow the radial bar D to play over a knob or aroundan oval-shaped stick. The Outer end of each link F is provided with a curved. slot, f, for a purposehereinafter mentioned:

f 2 f 2 are links similarly pivoted by their inner ends to the short bars f, so as to form a mo jointwith the links F, and have onthe outer ends pins which'enterand slide within the slots f. f of the same. The links F F and f f have their convexity 'outward, and all six are united together, as described, so as to form one mechanism, the moving ot any one link of which will move all equally.

G G are counterbalancing-weights for the cutter-bars, each having apin on its surface, which enters and slides in theslotf of oneof th'e'links F in such manner as notto interfere with the link f, connected with the former;

I .g is'an a'rm extending inward from the counter-balance, and pivoted by-its'inner end to a support, 0..

The operation of the machine is as follows: When the log is fed to the machine, either by hand or by the carriage used when large logs are operated on, the rotating knives give, by the cutter-bars sliding outward in the ways a, but are held sufficiently tight against the log to cut by the springs E E, which also cause them to follow each irregularity on the surface of the log. 7 The log is kept central in the feeding-cylinder, because as one cutterbar moves in or out it will cause the other to move equally in or out by means of the connecting-links F F and ff. The rotating of the case B tends to throw the cutter-bars out of the waysby centrifugal force. This action is balanced by the centrifugal force of the weights G G, which act on the outer ends of the levers F, while the cutter-bars act on the inner ends of the same. As the cutter-bars move outward the weights G G move inward, and their centrifugal force is lessened, but their leverage is increased in an, equal ratio, so that their action remains the same. d

When it is desired to round up a stick, the

slots in the bars f f are dispensed with.

Having thus described our invention, what we claim as new, and desireto secure by Letters Patent, is-

1. In a machine to peel or trim the circumference of logs, the combination, vwith the horizontal feeding-cylinder A, case B, surrounding .a suave and means for connecting said cutter-bars in suehmanner that the movement of one will- ,causejall the others to move equally toward or from the center of the feeding-cylinder, substantially as specified. 2. In a machine for trimming the circumference of logs, the combination, with the horizontally-arranged feeding-cylinder, case sur; rounding the same, and the springs having theirfree ends engaging the outer ends of the cutter-bars, the cutter-bars sliding in ways arranged radial to the aperture of the said feeding-cylinder, the link-s F, pivoted to the outer ends'of the rods f, links f, pivoted to the said links F, the supports 0, extending from the case, and the counterbalancing-weights pivoted to the said supports-substantially as specified;

3. In a machine to peel or trim the circumference of logs, the combination, with the feedi'ngcylinder A, case B, and springs E, of three or more cutter-bars, D D D, sliding in proper waysc c, fixed to the case, and connectedv by. proper mechanism to make all three move togetherequally and similarly, two of said bars having proper cutters d attached to their inner ends,and the third'being provided with the roller d, rod d", guide (1, engaging prop erly the bar d attached to the case, substantially as specified.

In testimony whereof we aifix our signatures in presence of two witnesses.


.W'itnessesi v EDWARD O FowLER,


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2581829 *May 9, 1946Jan 8, 1952Alexander Malvin TPole-stripping machine
US2655961 *Nov 8, 1949Oct 20, 1953Mccomb Jr William PLog debarker having revolving flails
US2718910 *Oct 31, 1952Sep 27, 1955St Clair Harold VRotary-head bark-remover having pivotable knife-carrying arms operable by centrifugal force
US3171455 *Apr 23, 1962Mar 2, 1965Soderhamns Verkst Er A BRotor for a log debarking machine
US3718167 *Jan 24, 1972Feb 27, 1973Nicholson Mfg CoLimb stub-cutting mechanism
US3942565 *Jul 26, 1974Mar 9, 1976Clement RatelleLog cleaning and barking