US2571385A - Tree and log saw - Google Patents

Description

I. J. ROCKLIN TREE AND LOG SAW 2 Sheets-Sheet 1 IN VEN TOR.

.Z:5daare J F?ocK/in Oct. 16, 1951 Filed Sept 22, 1947 Qct. 16, 1951 J. ROCKLIN TREE AND LOG SAW Filed Sept 22, 1947 2 Sheets-Sheet 2 INVENTOR.

Ptented Oct. 16, 1951 UNITED STATES PATENT FFICE TREE AND LOG SAW Isadore J. Rocklin, Sioux City, Iowa Application September 22, 1947, Serial No. 775,414

1 Claim.

My invention relates to a tree and log saw.

An object of my invention is to provide a portable saw unit which can be transported to any desirecl location, and which saw unit can be used for either sawing logs on the grouncl, or which can be alternately used for sawing or telling trees.

A further object of my invention is to provide a unit having the above characteristics, which is powered from a small engine earried by the unit itself.

A further object of my invention is to provide in the arrangement, efiicient means for providing reciprocation of the saw blade for either purpose, to provide attached means for securing the log or tree during the sawing operation, and to provide adjustable tensioning means whereby the cutting eiect of the saw is adjusted to meet varying conditions.

A further object of my invention is to provide adjustable belt tensioning means and to further provide a unit wherein the parts are assembled in cooperative relation on a simple elongated carriage structure.

Wiih these and other objects in view, my invention consists in the construction, arrangement, and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claim, and illstrated in the accompanying drawings, in which:

Figure 1 is a side elevation of the unit as it is used for cutting logs,

Figure 2 is a plan view of Fgure 1,

Figure 3 is a view of the arrangement used for felling trees, and

Figure 4 is a modification.

My invention contemplates the provision of a simple unit wheeled structure having an arrangement mounted thereon for providing reciprocation to a saw blade, and wherein the arrangement can be swung and locked into position at ninety degrees from its 10g cutting position, so that the same arrangement can be used for felling trees.

I have used the character i to designate a pair of side wheels which are journalled on the transverse shaft H, and attached. at |2 is a further transverse strap I3 which is attaehed at I4 to a substantially long pipe |5 having the arcuate portion "3, and attached to the pipe at I! is a gasoline engine |8 having the tank 19, the engine I8 being adaptea to drive the small pulley 20.

Pivotally attached at 2! to the pipe |5 is the upwardly extending control lever 22 having the hand control member 23 which includes the engaging portion 24 for engaging the notches 25 in the arcuate ratchet member 26 which is attached to the pipe I5.

Reeeiving the pipe |5 is a further larger pipe 21 which includes an ear 28 attached thereto to 2 which ear is attached therod 29 which is pivotally securecl at 30 to the control lever 22. Attached at 3I to the pipe 21 is a. hearing 32 which receives a short shaft 33 which is attached to the larger pulley 34.

Also attached tothe pipe 21 is a support 35 which includes a hearing 36 which receives a shaft 3| which is attached to a further smaller pulley 38. Passing over the pulleys 20 and. 38

% is a belt 39.

Attached to the shaft 31 is a further small pulley 4I1 over which passes a further belt 4l which passes over the pulley 34.

Attached at 42 to the pipe 21 is 2. post or sup port 43 to which is pivotally attached at 44 to the downwardly extending arm 45 which is pivotally attached at 46 to a link 41 which is pivotally 'secured at 48 to any one of the openings 49 in one of the spokes of the pulley 34.

Also pivotally attached at 44 is the walking beam5l) including a hooi; 5l at ons end adapted to engage one of the links of the chain 52 which chain 52 passes about a forward portionof the pipe member I5 at 53 and can be secured thereto.

Attached at 54t0 the other end of the beam is a helical spring 55 which is attached at 56 -to the rod 51 which is pivotally attached at 58 to the lower end of the arm 45.

Attached at 59 to the pipe 21 are the short straps 60 which are attached to the longitudinal guide strap 6| The pipe member 21 includes the slot 62 adapted to receive a bolt 63, the pipe l 5 including a further opening at 64 for receiving the bolt when the arrangement is in the tree felling position as wil1 beexplained later.

Attached to the rod 51 at 65 is the plate 66 having an arcuate slot 6! through which slot is received the bolt 68 for fixing the saw blade in desirecl angular position. Attached to the plate 66 by the further bolt 69 is the saw blade 10.

Attached at 1! to the pipe I5 is a clamp 12 which extends into the upwardly projectingstrap 13 which again extends downwardly into the portion 14 for providing a starting guide for the saw blade 10. Slidably engaging the pipe member is is a short collar 15 which is of slightly greater diameter than the pipe l5, and extending from the collar '15 is an ear 16 through which ea'r is secured a bolt 11, and pivotally movable about the bolt 11 is a lever 18 to which is securely attached a clevis member 'Ig including a slot for the reception of the chain 80. The collar 15 is attaoliecl to a downwardly extending member 8I, at the lower terminal of which is attached the log penetrating point 82, and attached at 83 to the chain is a further member 84 to which is attached at 85 a further pointed member 86 for penetrating into the log at the other' side of the point 82.

A brace member 81 can be used to brace the post 43, the brace member 81 being attached to the pipe 2'|.

Figure 1 illustrates the use of the saw for sawing 1ogs, and t will be noted. that the pulley drive wil] impart rotation to the pulley 34, which correspondingly reciprocates the link 41 and the arm 45, the arm being bent as shown whereby the 1ower portion will be guided against the member 6I. This acton imparts the neoessary recprocatng acton to the saw b1ade1l), andaiso mparts a certain amount of rocking action thereto necessary for proper cutting. 'Ihe tenson on the spring can be adjusted byrhanging the attachment of one of the links of the dhain"52 with 'the*ho0k 51, 101 instan'ce, as the saw penetrates "deeper in'to the log, the tension "can be increased in =this manner "by drawing upwardlymn th chain 52, and in this wa any ie sired pressure against the blade can be secred.

'IJhe stroke can be adjustedby virtue of the diftenent openngs 49 and. the angle 0 -=the tlade 1-U can also beadjusted by virtueo'f the bdlt 68 as ="exp1ained above. "I'he unt is -secureiy a'ttached to the log by placing the pointsi2 and in position and. thencedrawing the chan op into the dievis 19, and thence throwing the lever 18 over toward ther ig'ht which draws the points -in together towards aach ether; and causing the larger diameter collar 15 to penetrate in'to the pipe l5 slghtlydue*tb thes1ightanguiarity -of the collr with respect to -the pipe I5, therbyoausing a b'indingand firm retaining action.

The '1ever 22 due to its engagement with the ratrhet member ho1ds the outer =p'ipe unit 2 "in fixed position, anti the iever 22 aan aso "oe used to adus't the belt tens'ion of the belt 3Vby placing the ratchet =mechariism in any desired posltion. I-t -wil1 thus "be seen that the unit whi1e sa.wng, is in"a firm and sld positioh -to allow t-he ull necessary action to the func'toning parts.

For sawingflowntreesthe unit is usedas s'hown in Figure 3 in which case the pipe 21 is rotatec 1 ninety degrees with the bolt 63 being =placd through the opening 64 and in the same slot 62. The -members 81 and. 84, as =we11 as the -lamp 12 are also rotated in the same manner and then again secured. "The lever 22 however will not be rotated to this posit0n and w11 remain in the same position, however, the red 29 Which is fa irly flexble wll allow the pipe -21 and its assembledparts to be turned. Durng this use the forward end of the unit will restupon th ground in can be biocked up slightly, and the be1t 39 t! course will be twisted zas shown. It Will thus be seen that in this postion, the saw wil] operate as a tree ellng arrangementncludng the sa.rne reciprocatng members as well as other features.

Eigure 4 iliustrates a slight modification wherein a substantally U-shaped bracket 88 is :at tached at the top of the post 43, with a :reel 8.9 being journailed wthin the bracket and including a winding.handle -90 attachedthereto. A pawl M is adapted to engage the -ratchet 92, with a cable 93 being wound on the reel :89 and with the =cable 93 being attaehed to the spring 94 which-isattaehed -at 95-tothe arm 5|. This structure -provides analternative arrangement for ad justing th tension of the spring94, to provide a similar result as thesprng 55 and the beam 50.

lt will be noted 'that .a11 of the thrusts or plied or released as desired.

strains resulting from the sawir'1g action are absorbed between the lengthened tube 15 and the saw, so that as as a result none of these thrusts are transmitted to the wheels |0 of the structure. .It should also ,be specifically inoted that the ratehet andlever meniber 'Z provides a clutch mechanism since the ratchet can be released to draw the pulley 38 rearwardly whch releases the belt39, and in this way the power can be ap- In this manner, thecontrdl lever acts as a clutch besides actn as means for adjustably tensionin the belt.

It wil1 now be seen that I have provided the var'ios advantages set forth in the objects of my invention with various other advantages beng readily apparent.

Some ehanges may be made in'the construction and arrangement of the parts of my invention without departingrom the real spirit and purpos of my invention, and it is my intention to cover by my claim any modified forrns of structure or use of mechanical equivalente which may be reasonably included within its scope.

I claim as myinvention:

A saw unit comprisng an elongated inner tube, a rear framework a pair of wheeis journalled to said framework, an engine attached to said framework, an outer tube receiving said inner tube, a support attached to said outer tube, an arm pivotally attaehed to the upper end of said support, a push rodpivotally attached at the 1ower end of said arm, a saw b1ade attached to said push rod, pulleys attached to said outer tube, a link member pivotally attached to a pulley and to said arm, beits engagin the pulley of said engine and said pulleys, where'by sad engine wil1 reciprocate sad saw, means for securing said outer tube to said inner tube when said saw unit is used for sawing horizontally positoned logs said outer tube being rotatably mounted on said inner tube whereby said outer tube can be rotated 90.degrees with respect to .sad nner tube for providing means whereby said saw will function as a tree felling unit, a ratchet member attached t0 said outer tube, a lever member pivotally attached to said ratchet member for engagement therewith, sad lever member including arod attachedthiareto said rod engaging -said outer tube, whereby movement of -said lever member will adjust the tension between said pulieys and thepulley of said engine.

ISADORE J. ROCKLIN.

REFERENCES CI'IED The foliowing references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 175,382 Saunders Mar. 28, 1876 506,111 Harriman Oct. 3, 1893 703,334 Carey June 24, 1902 782,101 Blaisdell Feb. 7, 1905 1,499198 Swenson June 24, 1924 1,592;913 Thorn July 20, 1926 1712,270 I-Iawk May 7, 1929 1805,318 Stefiler May 12, 1931 2,407,028 McLean Sept. 3, 1946 2,432,562 D111 Dec. 16, 1947 FOREIGN PATENTS Number Country Date 620,956 France Jan. 25, 1927 113,879 Australa Sept. 16, 1941

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