Патент USA US2410887код для вставки
NOV. 12, 1946. |-|_ G, LOCKE 2,410,887 SAWMILL Filed Oct. 26, 1_943 5 Sheets-Sheet l _breng GhLOÚÁ’eI Nov. 12, 1946. _H. G. LocKE ' 4 2,410,887. SAWMILL Filed oct. 26,l 1945 .3 sheets-sheet 2 Nov. l2, 1946. H. G. LocKE 2,410,887 SAWMILL Filed 001'.. 26, 1945 3 Sheets-Sheet 3 2,410,887 Patented Nov. 12, 1946 UNITED STATES PATENT OFFICE 2,410,887 SAWMILL Henry G., Locke, Jasper, Ala. Application October 26, 1943, Serial No. 507,692 1 Claim. (C1. 143-55) 1 2 6 and to convey the cut log sections after each cutting operation to an elevated chute 'I whence adapted for cutting pulp- wood of substantially the log sections may gravitate into any suitable tree length into predetermined log lengths for conveyance for transportation to a pulp mill for convenient handling in shipment, and has for the making of paper or the like. It is preferable the primary object the provision of a device of that the chute 'I be arranged so that its discharge this character which will materially reduce the end may be conveniently raised and lowered. man power heretofore necessary in `cutting pulp xThe conveyor 5 includes a horizontal portion A wood and may be readily set up for operation and an inclined portion B joining with each other within a forest and in the vicinity of the place 10 with the inclined portion discharging into the where the trees are being felled. chute l. Logs in tree length may be loaded onto Another object of this invention is the pro the portion A in any well' known manner and vision of a power operated device of the above caused to move as desired `to the cutting mech stated character which will feed the logs in sub anism and after each cutting operation the log stantially tree length into position for sawing and sections may pass onto the chute ‘I by way of move the predetermined cut lengths of wood to a the inclined- portion B of the conveyor. The por conveyance for shipment, the cutting mechanism tion A of the conveyor includes spaced' rollers of the device being easily controlled by a per S each providedv with conical shaped portions to son and its operation by said person also gov prevent a log from moving endwise ythereof and erns the non-movement of `the logs While the cut ting operation takes place as well as operates 20 the shafts of said rollers are geared to a driven shaft 9 journaled in bearings III. The portion B the means forr preventing the saw- from- binding of the conveyor includes spaced rollers II over during the cutting operation. which is trained a flexible element I2 carrying With these and other objects in View as will flights I3. The shaft of one of the rollers I'I eX become more apparent as the description pro tends into the cutting mechanism andi's secured ceeds, the invention consists in certain novel fea to a reduction gear mechanism I4 driven from a tures of construction, combination and arrange shaf t I5 through the use of an endless belt. The ment of parts as will be hereinafter more fully shaft I5 is driven by a power shaft l1 through described and claimed. the use of an endless belt I6.. The power shaft I'I For a complete understanding of my invention, reference is to be had to the following description 30 is connected to a power source (not shown)~ by'an endless belt I8. and accompanying drawings, in which The saw mechanism 6 includes a frame î-9î of Figure 1 is a top plan View illustrating a saw skeleton formation arranged laterally of the con mill constructed in accordance' with my inven veyor 5 and has the shafts I5 and I'I journaled tion. Figure 2 is a sectional view taken on the line 35 thereon as well as providing a support for the reduction gear mechanism Ili‘. The power shaft 2-2 of Figure 1. I'I is supported by anti-friction type bearings 20. .Figure 3 is a transverse sectional view illus The shaft I'I also extends through sleeves- 2| trating the cutting mechanism and the means (Fig. 5) journaled in anti-friction bearings 22 on actuated thereby to prevent the saw of the cut ting mechanism from binding during theY cutting 40 the frame I9 and the sleeves 2l" have connected thereto spaced parallel members 23 which go` to operation. make up a counterbalanced and pi-votally mount Figure e is a fragmentary top plan view of the ed saw frame 23’ provided with a control handle cutting mechanism and thepower‘drive therefor. 24. The saw mandrel is journaled on one end of Figure 5. is` a fragmentary transverse sectional View of the journal or pivot for the> cutting mech 45 the saw frame 23’ while the other end carries a coun-terbalanced weight. VA circula-r saw 25 is ani'sm. secured to the saw mandrel and may be swung Figure 6 is a fragmentary transverse sectional upwardly and downwardly with relation to the view showing a frictional drive and a clutching portion A of the conveyor 5. The saw mandrel and declutching means therefor. is connected to the shaft I'l by an endless belt 26. Figure 'l is a fragmentary plan view partly in The drive for the shaft 9 from the shaft I5 in section of the frictional drive. cludes a friction type clutch 2'I consisting of discs Referring in detail to the drawings, the numer 28 and 29. The shaft of the disc 29 is mounted al 5 indicates a conveyor, constructed to feed in bearings 30 and 30a, the latter of which is logs in substantially tree length up to a cutting mechanism indicated generally by the character 55 pivotally mounted on the frame 6 While the This invention relates to a saw mill especially 2,410,887 3 4 former is slidably mounted thereon. The shaft of the disc 29 is connected to the shaft l5 by an endless belt 3|. The shaft of the disc 2'| is journaled in bearings on the frame 6 and is geared to the shaft 9. The slidable bearing 30 has pivotally connected thereto a lever 32 (Fig be prevented from moving further under the in rollers 8 for the purpose of stopping the move next portion of the log be moved into position for cutting. Therefore, it will be seen that this fluence of the conveyor. Further downward movement of the saw by .the operator brings the saw in cutting relation with the log and at the same time an upward pressure is being made on the log or the cut section thereof by the block 40 preventing the blade of the saw from binding ures 3 and 6) pivoted on a support 33 carried by with the log. On the completion of the cut in the frame I9. A control rod 34 is connected to the logby the saw, the operator releases the the lever 32 and is located adjacent the lever 24 so that the operator may engage and disen 10 handle of the saw frame‘and the weight elevates the saw blade which brings about lowering of gage the disc 29 with the disc 28. the log stop so that the cut section may be moved Thus it will be seen that the operator at any by the conveyor onto the inclined chute and the time desired may discontinue the drive to the ment of the logs supported by the rollers. device will permit one person to easily and rapid A suitable detent arrangement 35 (Figure 3) ly cut logs into sections of desired length, the may be provided between the control lever 34 and only other manual power that is needed in the the frame I9 for the purpose of releasably secur operation of the device'being the feeding of the ing the control lever in position of engaging or 20 logs onto the rollers 8 of the conveyor. To facili disengaging the discs of the friction clutch. tate this operation an inclined skid (not shown) A log stop 31 is slidably mounted on the con may be arranged adjacent the portion A of the veyor 5 where the portions A and B meet and conveyor to assist the operator carrying out the has connected thereto a flexible element 38 (Fig last stated operation. ure 2) trained over a series of pulleys 39 on the It is preferable that the rollers be fluted so as frame I9 and is connected to the counterbalanced 25 to readily bite into the log to assure its-movement end of the saw frame so that whenever the saw over the conveyor. . is manually moved upwardly or in the direction It is to be noted that all of the control means of non-cutting a log, the stop lowers into the are located within easy reach of the operator’s path of movement of the log to prevent further movement thereof by the conveyor until the cut 30 station or position. While I have shown and described the pre ting operation has been started thereon. If de ferred embodiment of my invention, it will be sired, the log stop may be adjusted endwise of understood that minor changes in construction, the conveyor 5 in order that the logs may be cut combination and arrangement of parts may be into sections of different lengths. A log lifting block 40 (Figure 3) is slidably 35 made without departing from the spirit and scope of the invention as claimed. mounted on the conveyor 5 adjacent to where Having thus described my invention, what I the saw acts on the log and may be made to claim is: lift or elevate the log or that portion thereof being cut oiï so as to prevent binding of the saw In a saw mill, a conveyor construction includ during the cutting operation. A lever 4| is piv otally connected to the log block 4i] and to the ing a‘horizontal portion and an inclined portion while making the cut in the log. vertically slidable log stop for controlling the movement of a log by the rollers and operated by the pivotal movement of the saw frame, and connecting therewith, feed rollers journaled on the horizontal portion of the conveyor, a shaft frame I9. A member 42 is slidably mounted on geared to said rollers, an endless type conveyor the frame |9 and is pivotally connected to the mechanism carried by the inclined portion of the lever 4| and is arranged in the path of movement of the saw frame so that as the latter swings 45 conveyor, a frame located adjacent the conveyor and extending laterally therefrom, a power shaft downwardly to bring the saw into engagement journaled on said frame, means for connecting with the log, the block is caused to move upward and disconnecting .the power shaft to the ñrst ly, contacting the log and placing an upward named shaft, means for connecting the endless pressure thereon. A foot pedal 43 is also piv otally connected to .the block 40 and lto the con 50 type conveyor mechanism to the power shaft, a saw frame journaled for pivotal movement on veyor 5 and is preferably located adjacent the said power shaft, a saw on the saw frame, a drive control lever so that the operator may manually means between the saw and the power shaft, move the log block 4U upwardly to increase its counter balance means for the saw frame, and a action on the log should the saw start to bind The saw frame having the weight on one end thereof will always assume a position when man ually released of the saw blade being in its fullest uppermost position so that Áthe conveyor can move a log under and past the saw blade. Also when the saw is in its uppermost position the log stop is in an elevated position. Whenever the oper ator wishes to cut the log into a selected length the saw blade is moved downwardly lowering `the gate so that the log when engaged therewith will means comprising a lifting block located in the conveyor and in advance of the saw for exerting an upward pressure on a portion of the log when acted on by the saw and operated by the pivotal movement of the saw frame, in combination with a foot lever connected to said lifting block to augment the upward pressure on the log. HENRY G. LOCKE.