US1725495A - Log-sawing machine - Google Patents

Description

Aug. 20; 1929. c. w. VOGLER LOG SAWING MACHINE Filed May 11, 1926 2 Sheets-Sheet INVENTOR CRAWFORD WELLINGTON VOGLER BY A T ORNEYS Aug. 20, 1929. V c. w. VOGLER 1,725,495

" LOG SAWING' MACHINE Filed May 11. 1926 2 Sheets-Sheet 2 2 35 I I 6 I 26 8 7 25 i 57 2 58 1 60 IN VENTOR CRA wr-onp WELLINGTON VQGLER ATTbRNEYS Patented Aug. 20, 1929 CRAWFORD WELLINGTON VOGLER, OF VANCOUVER, BRITISH COLUMBIA, CANADA.

LOG-SAWING MACHINE.

Application filed May 11, 1926, Serial No. 108,352, and in Canada May 20, 1985.

My invention relates to improvements in log sawing machines and the object of my invention is to provide a machine of this character capable of operation when floating by '5 means of which it is possible to saw and split cleanly and evenly logs of the largest dlameter without the necessity of hauling them out of the water into the mill to be there sawn or of bursting them with powder or other 10 detrimental methods when they cannot be feasibly split by ordinary means, so that a great saving of time and labour is efiected,

accompanied by an added advantage that practically the entire log may be saved, which 15 is of great importance where valuable timber is considered, such as aeroplane spruce or other expensive woods.

I attain this object by the construction illustrated in the accompanying drawings in 20 which Fig. 1 is a side view of my machine.

Fig. 2 is an end view.

In the drawings like characters of reference indicate corresponding parts in each 25 figure.

' The machine consists of a floating open framework the members of which are indicated by the numeral 1 having at one end an upper platform 2 on which is mounted a drive 3 shaft 3 carried in suitable bearings 4 and 5 having crank discs 6 and 7 at each end respectively and eccentrics 8 and 9, which shaft is driven by a belt 10 passed around a pulley 11 on the shaft 3 and a pulley 12 secured to the shaft of a suitable motor 13 mounted on the platform 2. Connecting rods 14 and 15 are connected at their upper ends to the respective cranks 6 and 7 and at their lower ends to pins 16 and 17 secured to the side members 18 and 19 of a vertically reciprocable open frame 20 between the upper and lower members 21 and 22 of which and detachably secured thereto are one or more saws 23.

Within the open framework 1 is a longitudinally movable frame 24 supported at one side on a flat rail 25 and at its opposite side on an inverted V rail 26 by flat and V-grooved rollers 27 and 28 respectively, within which frame the log to be split, indicated by the numeral 29, may be floated and to which it is secured after raising it slightly by dogs 30 and 31 carried by the cross bars 32 and 33 of the frame 24 at the opposite ends of the same, the crossbar 33 being detachably connected to the frame side members 34 and 35 in any suitable manner so that it may be temporarily removed to permit the log to be floated and arranged within the frame.

The frame 24 and consequently the log 29 when it is dogged in position, are moved ahead by mtermittent movements of predetermined length, say one-eighth inch at a time, b means of pinions 36 and 37 suitably mounte on the framework 1 meshing with longitudinal racks 38 and 39 secured to the side members 34 and 35 of the frame 24, the designed amount of pinion movement being imparted to the pinions 36 and 37 by means of ratchet toothed gears 40 and 41 secured concentrically to the respective pinions and pawls 42 and 43 respectively associated with the ratchet gears, which pawls are operated to move'the ratchet gears by rocking levers 44 and 45 pivoted at their lower ends, as indicated particularly at 46 in Fig. 1 and connected by links 47 and 48 to other rocking levers 49 and 50, these latter levers being pivoted as indicated at 51 in Fig. 1 and slotted towards their upper and lower ends, as at 52 and 53, and connected to and operated by eccentric rods 54 and 55 connected to the eccentrics 8 and 9 already mentioned.

The vertically reciprocable frame 20 is guided in its vertical movement by means of vertical rods 56 and 57 the lower ends of which are connected to the frame 20 towards the lower end thereof as at 56 and 57 and which rods extend slidably through brackets 58-59 and 60 61 secured at suitable points to the framework 1, as shown more particularly in Fig. 1, while to assist in the upward return movement of the frame 20 a pair of pivotally mounted levers 62 and 63 are pro vided, which are resiliently supported by springs 64 and are connected at their outer ends by cables 65 and 66 to the upper members 21 of the framework 1, as indicated in Figs. 1 and 2. Bumper springs 67 and 68 are also provided to co-act with rods 56 and 57. An approved water pump, indicated by the numeral 69, and operated by the frame 20 as it reciprocates, may be provided and the discharge therefrom directed into the saw cut to keep the same free during the sawing operation.

Thus on rotating the crank shaft 3 the frame 20 and saw 23 will be vertically reciprocated so that the log 29, being carried against the saw by the intermittent forward movements of the frame 24 due to the operation of the pawl and ratchet mechanism described, will be sawn longitudinally as desired skilled in theart, among which may be men tioned specifically the great saving of time and labour involved in the handling of such logs and also the saving of practically the Whole of the lumber contained therein in usable and marketable form.

7 What I claim as my invention is:

- 1. Means for splitting logs longitudinally while floating in a pond or the like, comprising a fioatable structure having a base frame open at the center to enable a log to be confined therein, a work carriage mounted by and movable longitudinally of said frame and equipped with means to engage opposite ends of a log, a vertically movable saw carried by the supporting structure and arranged to cut longitudinally through the log as the latter is presented thereto by the 'work carriage and means carried by the supporting structure for reciprocating said saw and simultaneously moving the work carriage to feed the log in the direction of the saw.-

2. A machine for sawing logs While floating in a pond or the like comprising a floati lng structure lncluding an open base frame 111 which the logis adapted to be confined, a horizontally movable work carriage supported from the side members of said base frame and including cross bars provided each with a pair of dogs adapted to engage the end of a log at opposite sides of the longitudinal center'of the log, a vertically movable saw carriage carried by said supporting structure and provided with a centrally located vertically extending saw arranged to cut longitudinally through the log when the latter is presented thereto by the work carriage, guide rods carried by the vertical side members of the saw carriage and passing slidably through suitable brackets on the floating structure, buffer springs confined between suitable abutments on said guide rods and certain of said brackets and arranged to cushion the upward movement of the saw carriage, levers pivoted at one end to an upper portion of the floating'structure and fastened at the opposite end to the upper member of the saw carriage, springs confined between said levers and underlying portions of the floating structure and normally tending to swing the levers upwardly and means carried by the floating structure for reciprocating said saw carriage.

Dated at Vancouver, B. G, this 5th day of May, 1926.

CRAWFORD WELLINGTON VOGLER.

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