US1190739A - Sawing-machine. - Google Patents

Description

A, L, EnwARus.

SAWING MACHINE.

APPLICATION FILED GCT. $3. 1914.

PmentedJuly 11, 1916.

2 SHEETS-SHEET1 W w m A. L. EDWARUS.

SAWING MACHlNE.

APPLICATION FILED 0CT.13, I914.

1,19,?39 Patented July 11, 1916.

2 SHEETS-SHEET 2.

SA'WING-IEACHINE.

Specification of itetters Patent.

Patented July ll llffiljtd.

Application tiled llotoher 13, 1914. ttcrial lilo. $66,514.

To (ZZZ whom it may concern:

Be it known that 1, Autumn. L. EowAuos, a citizen oii the United Etates, residing at Lewistown, in the county of Fergus, Eitate of Montana, have invented certain new and useful Improvements in Sawing-Machines; and I do hereby declare the itollowing to be a full, clear, and exact description of the invention, such as will enable others skilled. in the art to which it appertains to make and use the same.

The object of the invention is to provide a "machine of this character wherein the saw will. be of the endless type and which may be transported from one place to the other to facilitate the sawing of trees.

A. further object of the iuvei'itiori resides in the provision of wheel truck means whereby the machine may be readily transported from one place to another, said truck being provided with means for rendering the wheels inoperative for their purpose, whereby the truck terms a. secure an rigid support or base tor the machine.

A still further bject of the invention resides in the provision of a sawing machine including saw carrying member adapted to be tilted and held in any desired angular relation to the truck, means also being provided for moving the saw carrying means vertically with relation to the truck.

A. still further object of the invention resides in the provision of a sawing machine of the class described of a chain saw comprising elements forming saw teeth and adapted for engagement with sprocket wheels whereby they will be driven thereby.

A. still further object of the invention resides in the provision. of a sawing machine, of means whereby the saw carrying member is resiliently supported so that the saw may be yieldable when contacting with a knot or other hard substance withina tree and thus lessen or obviate the liability of the teeth becoming broken. 7

With these and. other objects in view, such as will appear as the description progrosses, my invention comprises the combination and arrangement of parts as herein set forth. and. subsequently claimed.

' Referring to the drawing :-Figure 1 is a side elevation of my device. Fig. 2 is a section on line 2 -2 of Fig. 1. Fig. 3 is an enlarged vertical longitudinal sectional view through the supporting post and mechanism connected therewith. Fig. i is a detail view of. the sprocket and its support. Fig. 5 is a longitudinal sectional view through the shock absorber. Fig. 6 is a view of the saw tensioning means. Fig. 7 is a detail viewof a portion of the saw.

Referring to the drawing wherein like parts are indicated. by like characters throughout the several 'viewsz-My device comprises a. suitable truck 1 having trans 1 versely extending skids 2 on which the machine is adapted to rest when the machine is in operation. Extending transversely of the truck and rotatably mounted in bearings 3 are axles 4;- having downwardly extending t..-shaped portions 5 on which are mounted wheels 6. Formed on these axles 4; and extending inopposite directions are crank portions 7 by means of which the axles may be turned about their pivots to lower or raisethe wheels 6. A lever 8 is pivoted to the upper face ofthe truck 1 and has a springipresscd pawl 9 thereon which coiiperates with a segmental rack 10 to maintain the lever in any'of its adjusted positions. Secured to this lever and extending therefrom are links 11 which are connected to the crank portions 7 1 to adjust the axles at to raise and lower the wheels 6.

Secured to the upper is a socket member 12 having an upwardly extending shank 13 in which is secured an upwardly extending hollow post 14.' In

the socket member 12 isa plate 15 which is rotatable therein and to the upper face of which is' secured. a post 16 which is located within the hollow post 14 and has secured to its upper end a T joint 17- in which is secured a cross arm 18 which extends to both sides of said 'l joint. Anrod 19 is mounted in the arm 18 and extends from'the forward end ofthe arm- 19. l Secured to "the forward end of this rod 19' is an elbow 20 to which are secured downwardly diverging supporting-members 21 face of the truck I of the saw 28 by pivots 38.

which members comprise straight arms 22 and brace arms 23 secured together at their lower ends by a member 24. Secured to the member 24 by set screws 24 are bear ings 25.

Member 28 is an upwardly bowed, saw supporting frame and the bifurcated ends of member 28 are pivotally secured on the ofi'sets of members 24; these offsets are hollow, and are large enough to receive axle 27 and bearings 25; the bearings 25 are adjusted by set screws 24.

On the rearmost arms 29 of the cross arm 18 is an upwardly extending 'member 30 having an aperture 31in the upper end thereof. Extending through this aperture and adjustable therein by means of the teeth '32 is a rod 33 having a handle 34 on one end and a head 35 on the opposite end. This head 35 operates in a cylinder 36, which cylinder has a pair of outwardly extending arms 37 secured to the bowed frame Springs 39 and 40 press on both sides of the head 35 and maintain the same in resilient connection with the arm 33.

Secured to the upper portion of the frame 28 and in spaced relation are brackets 41 in which are rotatably mounted pulleys. The lower end of the frame 26 is bifurcated, as at 43, and extending outwardly therefrom are fork-shaped bearing members 44. An

axle 45 extends between these bearing inem bers 44 and is adjust-able therein by means of screws 46 which extend through threaded apertures 47 in the members Rotatably mounted on this axle 45 is a pulley 48.

Between the legs of the bifurcated end 27 of the frame 26 is fixedly mounted on the axle 25 a gear wheel 49 and a drive pulley 50. p

Rotatable over the pulleys 42 48 and the sprocket 49 is an endless saw 51. This saw comprises a series of teeth 52 having depres-.

sions 53 in their pper edges so that the said 14s will engage in the teeth of the sprocket wheel49.

In order that the saw may be driven, I have provided the following mechanism: Fixedly mounted on the rod 19 is a motor bed 54 which is secured to theJcross arm by means of a screw 55 passing through a collar 56 on thesaid bedp' A motor 57 is se- "cured to this bed and has the usual drive wheel 58 thereoni Adriving belt 59 passes over this wheel 58 and over the pulley 50 on the shaft" 25. Thus it may be seen that the flrotation of the wheel 58 .of the motor 57 j ""will cause the belt 59 to rotate the pulley h 60' 50 and'with it the gear 49 to cause the saw 'to passabout the pulleys 42 and 48.

Secured'to the end of the arm 29 of the member 18 is a segmental rack 61 which cooperates with the spring pressed pawl 61 mounted on a downwardly extending arm 62 on the motor bed 54. By means of this rack and pawl the saw frame 28 may be adjusted in any position with relation to the vertical and held in its adjusted position.

In order that the plate 15 may be held positively in its adjusted position after the motor has been adjusted on its pivot 16, I have provided a boss 62 in which is adjustably mounted a binding rod 63 on the end of which is an operating handle 64.

-The operation of the device is as follows: The device is pushed to a. point adjacent to a tree to be felled. The lever 8 is then operated to allow the truck to rest upon the ground. The downwardly extending arm 62 is then gripped together with the operating handle of the pawl 61 and the motor bed 54 together with the saw frame 28 is turned at an angle. This angle is with relation to the vertical and may be varied to accommodate the particular tree. The member 63 may then be loosened so as to release the plate 15 and the saw frame 28 together with the motor is then swung about a pivot which is constituted by the post 16 until the saw teeth come in contact with the trunk of the tree. The motor is then started and the saw teeth cut the tree at an angle so that the same will be effectively sawed. hen it is desired to cut the trunk. of the tree or to transport the device to another place it is only necessary to reverse the operation and then grasp the handle. 34 and draw upon the rod which swings the frame 28 about a pivot and lift the saw teeth 106 from their location in proximity to the ground. The device may then be wheeled at will to a different location and is ready for operation after having been adjusted.

From the foregoing description it may be seen that I have provided a saw mounted upon a carriage in such a way that the same may be transported from one place to another, and I have so mounted the saw carrying means that the said saw may be 110 swung at any one of a number of angles with relation to the vertical and held in its adjusted position. I have still further provided means for mounting the saw carriage in such way that the said saw may be swung about a vertical pivot.

\Vhile I have described a particular embodiment of my invention, I wish it to be understood that I do not wish to be limited to that particular embodiment for it is obvious that numerous changes may be made within the'scopc of the invention as defined by the claim.

l/Vhat is claimed is:

A sawing machine comprising a rota- 128 tably mounted vertically extending post, a pair of downwardly diverging arms connected to the upper ends of said posts and being operable therewith on a horizontal axis, a saw frame pivotally connected to the mewae lower eni of one of said arms and arranged In testimony whereefi, I affix my signato have movement m a vertmel plane, a ture, 1n thepresence of two wltnesses.

member secured. to the other of said arms ARTHUR L. EDWARDS. for adjusting the saw frame in its vertical Witnesses: 5 plane and independent means for adjusting CHAS. J. MARSHALL,

the frame on its horizontal pivot. STUART MGLAGKIE.

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