US1379768A - Log-peeler - Google Patents

Description

J. N. LARSON.

LOG PEELER. APPLICATION FILED JULY 24, 1920.

mm May 31, 11921.

ISHEETS-SHEET I.

LWQRGSQ Patented May 311, 119211 ZSHEEIS-SHEET Z- J. N. LARSON.

.LOG PEELER. APPLICATION men JULY 24. 1920.

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J. N. LARSON,

LOG PEELER.

APPLICATION FILED JilLY 24,1920.

Patented May 311, 1921.

ISHEETSSHEET 3- 1. N LARSON. LOG PEELEH. APPLICATION FILED JULY 24; 1920. A I r Fatima/s61 my 3L 1921.

' I SHEEN-SHEET J. N. LARSON. LOG PEELER.

APPLICATION FILED 1UL24,1920.

I. N. LARSON.

LOG PEELER.

APPLICATION mu) JULY 24,

Patent/ed. May 311 19211.

SHEETSSHEET 6- J. N. LARSON.

LOG PEELER.

APPLICATION FILED JULY 24,1920.

Patented May 3L 19211.

7SHEETSSHEET I.

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".GLEULAE LARSON, OIE DEXTER, MICHIGAN.

LQG-PEELER.

Application filed July '34,

concern:

' l, JULIUS N. Larson, d States, residing at ty of Washtenaw and slates to log peelers, and a support adapted to receive 1e logs to us peeled, means for 5.3 thereto, means for removing sa d support, a reciprorranged beside tile logs support for the cutting r arranged on said carstment of the cutting ling logs of diiferent mounted on said supprovided with double permit peeling of logs f aces, and means for o said mechaa. w an.

e t invention, 1 have provided wherein the log to be or supported on a pair of which is provided with unery adapted to engage and "9; present the entire surface peeling mechanism. The g mechanism is mounted orocating carriage, the carriage to one side of the log sup an'sm ,and adapted to sup tool arranged abovethe the cutting tool is on "the carriage whereby qui *ly swung to an ve posi ion.

everal machines for ed wherein a aanism is arranged surface of the .ially been Yed capacity echanism in the The bark sold to tan:

1 or ielatixeiy free, W hen a log being uler surface formed by or peeling mechanism not will cut be- Specification of Letters Patent.

Patented May Ell,

1920. Serial No. 398,780.

neath the bark and remove wooden chips from the surface of the log. This renders the bark unsatisfactory for tanning purposes and lowers its commercial value.

In the present invention, 1 have provided a machine that is capable of adjustment for peeling logs of diiferent diameters and which may be built of any desired length for the purpose of handling relatively large logs. The machine is very positive in operation and has a large capacity, being capable of peeling a log in a relatively short space of time.

I have further provided means for supporting the cutting member, hereinafter referred to as the double equalization gage, whereby the cutter adjusts itself to irregularities in the surface of the logs and cuts a predetermined distance below the surface regardless of irregularities. This produces a much better grade of bark and one having a relatively high. commercial value.

In the accompanying drawings, I have shown one embodiment of the invention. In this showing,-

Figure l is a plan View of the log peele.

Fi 2 is a transverse sectional view of the machine.

Fig. 3 is a longitudinal vertical sectional view on the line 38 of Fig. 1.

Fig. 4 is a vertical transverse sectional View on the line H of Fig. 1.

Fig. 5 is a vertical longitudinal sectional view through the reciprocating carriage.

Fig. 6 is a sectional view on the line 6-6 of Fig. 2.

Fig. 7 is a detail View of the cutter.

, Fig. 8 is a sectional view on the line 8-8 of Fig. 2. v

Fig. 9 is a detail perspective view of the adjusting mechanism for the support of the cutting member, and

Fig. 10 is a detail view of the equalization gage which supports the cutting memher. Y

Referring to the drawings, the reference numeral 1 designates suitable vertical posts or standards supporting the bed of the machine. The support for the log to be peeled is mounted on a horizontal base or plate 2, arranged between the vertical stand ards. A trough 3 is arranged upoi. this sup port, the ends of the trough being provided with cross plates 4, in which are mounted bearings .for the shafts 5 and 6 of. the log supporting rolls 7 and 8. The roll 7 is provided with spikes or teeth 9 on its outer face which are adapted to engage and rotate the log. The roll 8 may be provided with a smooth periphery and serve as an idler for supporting the log. Beneath the logsupport and within the trough 3, there is arranged a'worm conveyor 10. shaft 11 is arranged below the shafts on which the rolls are mounted and the means for removing. the peeled logs from the log support are mounted on this shaft. As shown, an arm 12 provided with a curved log engaging on each face and projecting slightly beyond terminal 13 is keyed to the shaft and adapted to revolve therewith. A member 14 is also keyed to the shaft at an angle to the member 12 and a slotted arm 15 is secured near the end thereof by a pivot or link connection 16. A pin 17 is adapted to ride in the slot in the arm 15 to guide the arm during movement. The logs to be peelel are delivered to the supporting means by a chain or belt conveyor 18 which passes over sprock ets 19 mounted in bearingsj20 on a suitable supporting member 21. On the opposite side of the support, a chute 22 is provided adapted to receive'the peeled logs 'as they are removed from the machine.

The reciprocating carriage, on which the support for the cutting mechanism is mounted, comprises a frame 23 having traction wheels or rollers 24 adapted to travel on tracks 25. A transverse shaft 26 is arranged below the carriage, supported 'in suitable bearings 27 and this shaft carries a gear or pinion 28 meshing with a rack 29 arranged on the frameof the carriage. An-operators seat 30 is arranged on the car riflge at any suitable point. A pair of bearings 31 is carried by the frame of the carriage adapted to receive shaft 32 n which the support 33 of the cutting mec anism is mounted. Arrangement of the support in this manner permits ready adjustment of the supporting mechanism to move the cut-' ters to operative or inoperative position.

Referring to Figs. 2, 8, and 9 of the drawings, the means for adjusting the position of the supporting means for thc cutters comprises a hand lever 34 pivotally supported on the carriage frame and having a link 35 secured thereto. This link is connected to a crank 36 arranged on a shaft 37, sup- 1 ported on the carriage frame and provided with a pair of crank arms 38. A pair of links 39 are connected to the crank arms at ing mechanism adjusted forward or awayfrom the log supporting means.

The cutting mechanism comprises a pair of beveled cutters 41 and-42 and a centrally ment with the the adjacent face of the block. As shown, the cutting members may be provided with slots, to permit adjustment thereof and may be secured to the blocks by any suitable means such'as screws 46. The cutters are mounted on a shaft d7 arranged above and between the shafts of the log supporting are arranged on the shaft 47 at each end of the cutters, the plates being mounted eccentrically of each other in a horizontal plane. Each of these plates is provided with a traction ring 50 having antifriction bearings 51 arranged between the ring and the plate. Thebearings are held in place by an ennu lar member 52 having threaded engagelates 48 and 49.

As shown in igs. 2 and 4 of the drawings, the traction rings are normally arranged in the same horizontal plane and the lower por tions are adapted to engage the surface of the log being peeled. The cutters project downwardly slightly below the lower edges of the traction rings and enter the log to the desired depth to'remove the bark.

Means are provided for supporting the cutting mechanism whereby the cutting tools may adjust themselves to irregularities in the surface of the log. As shown, a link 53 is connected to each of the plates 48 and 4:9 and the upper ends of the pair of links 53 are arranged at each end of the cutter are connected by cross links 54: (see Fig. 10). These cross links are in turn connected to vertical links 55, the upper ends ,of which are connected to each other by a link 56. A vertical link 57 is connected to the link 56 and the-opposite end is connected 'maintaining the hand lever in any desired position.

The various parts of the machine may be driven from any suitable source of power.

As shown, the shaft 5 of the spiked roll 7 is provided with a beveled gear 64 meshed with a similar gear (55 arranged on the shaft 66 mounted in bearings 67. A friction wheel (38 is mounted on this shaft and engages a friction disk 69 carried by a shaft 70 arranged in bearings 71. A speed control lever 72 is connected to the friction wheel whereby the wheel may be adjusted toward or away from the center of the disk to govern the speed. The shaft '70 may be 1 and as shown a drive pulley 73 is arranged on the shaft adapted to receive a belt (not shown) from a central drive shaft. This pulley is provided with a clutch whereby the shaft '70 may be disengaged from the drive, the clutch being controlled by a lever 74:.

The shaft 11 on the log removing mechanism is provided with a friction wheel 7 5 meshing with a similar wheel 76 carried by stub shaft 77 supported in bearings 78. A drive pulley 79 is arranged on the shaft, the drive pulley being connected to the shaft by a clutch controlled by a lever 80. The shaft 26, which drives the reciprocating carriage, is provided with a pulley 81 ,which receives the drive belt 82 passing over a pulley 83 on stub shaft- 84. The shaft is mounted in bearings 85. A friction wheel 86 is mounted'on this shaft adapted to en-. gage a friction disk 87 mounted on awsliaft 88 arranged in bearings 89. The shaft 88 is provided with a drive pulley 90. A speed control lever 91 is connected to the friction wheel to permit adjustment of the friction wheel with respect to the friction disk. A clutch is arranged between the pulley 90 and the shaft 80 and a control lever 92 is connected thereto.

The shaft 47 of the cutter is provided with a pulley 93 adapted to receive a belt 9 passing over a pulley 95 arranged on the shaft of an electric motor 96 carried by the support for the cutting mechanism.

The operation of the invention is as'follows:

The logs to be peeled. are delivered to the log supporting mechanism by the chain or belt conveyer 18. W hen a log is being delivered, the log removing mechanism or kicker is in the position shown in Fig. 1 of the drawings and shown in full lines in 4 of the drawings. The arm 15 projects above the idler rolls 8 to prevent the log from passing over the supporting mechsni. The log is received in position beson the two rolls and the teeth or spikes on the rolls 7 engage the surface of the log and rotate it. tower is supplied to the shaft 5 from a suitable source through the shaft and the gearing connecting the two. The speed of the shaft 5 may be controlled by adjustment of the friction wheel v 68. As the log is rotated, the reciprocating carriage is driven by the engagement of rack 29 and the pinion 28, the speed of the carriage being controlled by friction wheel 86 and friction disk 87. As the carriage mechanism.reciprocates, the cutting tools engage the surface of the log and remove the bark therefrom as illustrated in Fig. 4. The beveled cutters ll or 43 first e gage the log, depending on the direction n whigl; the carriage is traveling, the beveled cutters preparing the log for the square cutter,

- Fig. 10 of the drawings, which supports the.

cutters and the shaft on which the cutters are mounted, permits the cutting mechanism to adjust itself to irregularities in the surface of the log and remove a uniform amount from the surface at all times. When one of the rings 50 engages a knot or projection on the side of a log, or enters a depression, the arm 53 attached to it raises or lowers, and through the link connection, the

arm on the opposite side is lowered or raised and the arms at the opposite end adjust themselves to permit the cutters to rise sufficiently to properly trim the bark around a knot or lower sufficiently to permit the cutters to enter a depression and trim the bark. The provision of the pivoted links 53 which are connected to the cutting mechanism and the pivoted cross links 54 which are connected to the supporting mechanism by means of pivoted links 55, 56, and 57, permits the cutting mechanism to assume an angle parallel to the surface of the log. When one of the plates 48 or 49 raises or lowers, the rectangle formed by the engaging edges of the rings 50 shifts its position due to the pivoted connections between ,the cutting mechanism and the supporting mechanism.

When a log has been trimmed or peeled, the support of the cutting mechanism is raised by revolving it about the shaft 32 carried by the carriage frame. This is accomplished. through the medium of the hand lever 34 and the connecting mechanism shown in Figs. 8 and 9 of the drawings. When the cutters have been raised out of contact with the log, the kicker or log removing apparatus is operated through the control lever 80, energizingshaft 11. When the shaft 11 is oscillated, the removing apparatus assumes the position shown in dotted lines in Fig. l of the drawings, the arm 15 moving downwardly to permit the peeled log to pass over the rolls 8 to the chute 22. The arm 13 engages the log and pushes it over the rolls 8 to the chute. At the same time,

the arm 13 assumes a position which prevents a second log from being delivered to the log supporting apparatus until the log has been removed.

.t is to be understood that while I'have shown and described the preferred embodi- -ment of my invention, various changes in Having thus described my invention, I claim:

1. In a log peeler, the combination of means for supporting and rotating a log, a reciprocating carriage, adjustable supporting means carried by the carriage. and cutting mechanism mounted on said supporting means, of an equalization gage secured to said cutting mechanism and connecting it to said supporting means, said gage comprising a plurality of links arranged in pairs, and pivotally connected to the opposite ends of the cutting mechanism, cross linkspivotally secured to the upper ends of said links and connectin the'links of each plates being normally in the same horizontal plane, and supporting means connected to each of said plates, said supporting means comprlsing equalizing devices connected to I each other to permit adjustment of said plates and of the cutter to compensate for irregularities inthe surface of the log.

3. In a log peeler, the combination with means for supporting and rotating a log, a reciprocating carriage, ad ustable supporting means carried by the carriage, and cut: ting mechanism mounted on said supporting means, of an equalizing gage secured to said cutting mechanism and connecting it to said supporting means, said gage comprising a pair. of circular plates arrangedat each end of the cutting mechanism, said plates being disposed eccentric .to each other in a horizontal plane, traction ring; arranged on said plates and engaging the surface of the log, links pivotally connected to said plates, the links at each end being pivotally connected to each other by cross links, and links piyotally connected to said cross links and connecting them to said supporting mechanism.

4. In a device of the character described, as a subcombination, cutting mechanism comprising suitable cutters, a shaft on which said cutters are mounted, a pair of circular plates eccentrically inounted'on each end of the shaft, the lower peripheries of said plates being normally in the same horizon tal plane, and supporting and equalizingmeans connectedto each of said plates, said supporting means comprising links pivotally connected to the plates, cross links pivotally connected to the links at each end of the cutting mechanism, and links pivotally connected to said cross links, and a rigid support to which said last mentioned links are connected.

In testimony whereof I aflix my signature in presence of two witnesses.

JULIUS NICHOLAS LARSON. Witnesses:

FRED. N. LARSON, G. G. CRUMRINE.

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