US926265A - Wood-sawing machine. - Google Patents

Description

W. M. LEE;

WOOD SAWING MACHINE.

APPLICATION FILED JULY 8. 190B.

nuwuroz Patented June 29, 1909.

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Queuing:

W. M. LEE.

WOOD SAWING MACHINE;

APPLIOATION FILED JULY 8. 190a.

Patented June 29; 1909.

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Wit zones W. M. LEE. WOOD SAWING MAOHINB.

APPLIOATION FILED JULY 8, 1908.

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WILLIAM M. LEE, OF MEMPHIS, TENN ESSEE.

WOOD-SAWING MACHINE.

Specification of Letters Patent.

Application filed July 8, 1908.

Patented June 29, 1909.

Serial No. 442,664.

T 0 all whom it may concern:

Be it known that I, WiLLIaM M. LEE, a citizen of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have invented a new and useful Wood-Sawing Machine, of which the following is a specification.

This invention relates to a wood sawing machine, and has special reference to ma chines of the character described in which a single reciprocated saw is used.

One of the objects of the invention is to improvethe general construction of such a machine, so that the same may be readily ortable and well adapted for sawing logs into fire-wood or for cutting down trees and shrubs.

Another object of the invention is to provide an improved actuating mechanism for such a machine so that the machine may be used equally as well in either a vertical or a horizontal position, these positions being used respectively for sawing up fire-wood or cutting down trees.

With these and other objects in view, as will become hereinafter more apparent, the invention consists in general of a combination of an improved form of saw actuating mechanism, feeding mechanism, and clamping mechanism.

The invention consists further of certain novel details of arrangement and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and specifically set forth in the claim.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and ;F igure 1 is a side elevation of the machine constructed in accordance with this invention. Fig. 2 is a top plan view thereof. Fig. 8 is a rear elevation thereof. Fig. at is a detailed view of a portion of the feeding mechanism.

The machine frame is constructed with two sides composed of a pair of longitudinal frame members 10, connected at the front of the machine by a relatively short vertical frame member 11, and at the rear of the same by a relatively long vertical frame member 12, braced to the upper longitudinal member 10, by a brace 18. The brace 13, is disposed in a diagonal position so as to give great strength and stability to the side frame. The two side frames are connected togetherby cross braces 1 1, suitably placed and mortise jointed and connected to the two side frames.

Mounted at the rear of the frame in suitable bearings 15, is a shaft 16, preferably termed the lower shaft. Upon one end of this shaft, outside of the side frame is a crank disk 17, bearing a crank pin 18. Pivotally mounted in a bearing 19, attached to that vertical member 12 of the frame lying near the crank disk is a cross head guide 20. A cross head 21 is mounted on this cross head guide, and a pitman 22 connects the cross head 21 with the crank pin 18. At the outer end of the cross head guide is a segmental bearing plate 23 against which the cross head guide 20 bears when moving about the pivotal point, said segmental bearing plate being concentric with said pivot point. Rigidly attached to the cross head is a-saw frame 24, bearing the usual holding means for a saw 25. These means may be of any desired character but it is preferred that they should be such as would readily accommodate the ordinary saw in what is known as a buck saw. ()u the outer end of the cross head guide is carried an arm 26 having an extension 27 forming a channel guide for the back of the saw frame. This channel guide is preferably designated the saw frame guide. Upon the arm 26, is also formed a saw guide 28. An arm 29 is mounted upon the upper member 10 of one of the side frames and preferably extends upward therefrom as clearly shown in Fig. 1. Pivotally mounted at the upper end of this arm is a lever 30 connected by means of a link 31, called the lift link, to the cross head guide. The lever 30 is provided with a handle 32 which is positioned at the front of the machine. A second lever 33, is pivotally mounted on one of the side frames, and is provided with a handle 31 extending out beyond the rear of the machine. A lever connecting link 35 serves to connect the end ofthe lever 3 with the end of the lever 30. These links and levers are so arranged that the position of the cross head guides may be varied by moving either of the said levers. A latch bar 36 is mounted upon the side frame on which the levers are located and is held in the path of one of said levers so that the lever may be positioned in the desired relation to the frame and there be held.

Upon the rear end of the machine there is mounted an upper shaft 37 carried in suitable bearings 38 on the side frame. Upon the outer end of this shaft 37 is an end ar anged to receive a suitable crank handle 40, the latter being preferably held thereon by reason of the end being square and the crank handle having a similar aperture therein. Upon the lower shaft 16 is mounted a gear 1-1, and upon the upper shaft 37 is mounted a gear e2. Meshing with the gears 4:1 and a2 is an idler gear e3 carried in suitable bearings Upon the upper shaft 37 is further mounted a beveled gear &5. A vertical shaft 46 is mounted in suitable bearings a7, and carries a beveled gear 48 mating with the beveled gear l5. The end of the vertical shaft 4:6 is shaped as indicated at as) to agree with the end 39 of the upper horizontal shaft. The crank handle &0 can thus be used on either the vertical shaft %6 or the upper horizontal shaft 37. Mounted upon the side frame opposite that which supports the cross head guide is a pair of supports 50 arranged in the form of sled runners. The position of the device shown in Fig. 1 is that in which it is used to saw logs into stove or grate lengths. hen the device is turned over on the runner support 50 it assumes the position for which it is used for sawing tl'irough standing timber. Further, when on the runners 50 the device may be readily pulled around from place to place either by hand or by attaching a horse thereto.

Supported on the front of the machine frame is a log way 51 whereon is mounted a plurality of rollers 52. A bearing board 53 provided with a plurality of pointed projections 54: is mounted on the front of the machine just above the line of the rollers. A detachable logway extension 55 is held against the logway 51 by means of a pintle connection 56. This detachable logway is so arranged that it may be removed when it is desired to turn the machine on one side for sawing down standing timber.

A feed roller shaft 57 extends across the permanent portion of the logway and carries a feed roller 58, the shaft and roller being keyed together or otherwise secured together so that the roller rotates with the shaft. On the feed roller 58 is mounted a series of teeth 59 preferably disposed in rows one diametrically opposite the other. The outer end of the feed roller shaft passes through the side frame of the logway and carries a lock ratchet wheel 60. A spring pressed locking ratchet pawl 61 is held on the logway frame to engage the locking ratchet wheel 60, thus preventing the feed roller from turning except in one direction. The other end of the feed roller shaft is prolonged toward the rear of the machine and is carried in a suitable bearing 62 mounted on one of the cross braces 14. Firmly sea cured to the prolonged end of the feed roller shaft is an actuating ratchet wheel 63 and gage the ratchet w an oscillating pawl 64 mounted on the shaft to freely revolve in one direction, and enieel when moved in the other direction to turn the feed roller. In order to actuate the pawl Get there is provided a link 65 pivotally connected to the pawl and to a lever 66 mounted on the frame.

Mounted upon the upper part of the frame are clamp guides 68, through which move clamp bars 69 carrying at their outer ends dogs 70 of downwardly bent recurved forms and provided with sharpened points. These dogs are so arranged as to eoact with the bearing board points 5% and hold a log or the like firmly on the logway. A clamp lever 71 is carried on a clamp lever shaft 72 mounted in suitable bearings 73, mounted on the lower members of the side frame. This clamp lever is connected to the clamp bars by means of a clamp lever reach rod 74. Adjacent to the path of the clamp lever 71 is a quadrant T5 of the usual toothed form. Mounted on the clamp lever 71 is a clamp lever latch 76 arranged to coact with the quadrant and hold the clamp lever in desired position.

In order to understand the operation of the device let it be supposed it is desired to saw a log into lengths for using in a stove or grate. The logway extension 55 is attached to the logway 51 by means of the pintle connection 56 and the log placed upon the extension. The cross head guides and saw frame are then raised by depressing one of the lever handles 32 or 3e so that the saw is raised clear of the path of the logs. The lever 30 or 33 is held in this position by means of the latch bar 36. The log is then rolled forward over the guide until it reaches a point at which it can be moved by the feed roller. The ratchet lever 66 is then moved up and down and actuates the feed roller 58 by the co-action of the actuating ratchet wheel and oscillating pawl, it being prevented from turning backward by the locking ratchet wheel 60 and the locking ratchet pawl 61. Vhen sufficient length of the log has been fed over the end of the logway the movement of the ratchet lever 66 is stopped and the clamp lever '71 drawn back toward the rear of the machine. This forces the log tightly against the bearing board and it is then held into this position by the co-action of the bearing board points and the points of the dogs '70. The crank handle L0 being positioned on the upper shaft end 39, is then revolved after the lever 30 is released from the latch bar 36 and the saw allowed to come in contact with the log. As the crank handle is rotated the upper shaft will rotate and by the gearing connection will cause the lower shaft 16 also to rotate. This causes the cross heads to move to and fro on the cross head guides and thus actullO ate the saw. The weight of the saw frame,

cross head guides and connecting parts serves to bear the saw downward through the logs as may readily be understood.

lVhen the log has been cut off the motion of the crank handle is stopped and the cross head guide and the saw frame are raised by again depressing the lever handle as before. The dogs are then relaxed and the logs moved forward for a fresh cut, this operation being repeated until the entire log is cut into lengths of the desired size.

hen it is desired to use the device for the purpose of sawing through standing timber the frame is turned over 011 runner supports 50. The entire machine is then moved into juxtaposition with the tree desired to be cut down and placed so that the dogs 70 may secure the machine to said tree. lVhen properly positioned the dogs are forced in by the lever 71 and the machine put into close contact with the tree. The crank handle 40 is now transferred to the shaft end 49, and rotated, causing the shaft 37 to rotate by means of the beveled gear and as before described reciprocates the saw frame and saw. It will be noticed that the handle of the lever 34 is in such position as to be grasped with the left hand of the operator while the right hand is used for turning the crank handle 4L0. As can be easily understood the saw will now require some means, other than gravity, to feed the same through the timber. This is accomplished by moving the lever handle 34 toward the top of the machine. This forces the saw through the timber as the same is reciprocated. There has thus been provided a novel and eflicient device of the character de scribed and it is obvious that minor changes may be made in the form and proportion thereof, without departing from the principles of the invention. It is not therefore desired to confine the invention to the exactform herein shown and described, but it is wished to include all such as properly come within the scope thereof.

Having described the invention, what is claimed as new, is

In a sawing machine a pivoted guide, lever mechanism for swinging the guide upon its pivot, a segmental bearing plate against which the free end of the guide bears, a cross-head slidably mounted upon the guide, means for reciprocating the crosshead along the guide, a saw frame carried by the cross head, a saw mounted in said frame, said guide having a portion engaging the saw frame, and a portion engaging the saw.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

VILLIAM M. LEE. lVitnesses PHILL SMITH, BARN nr Kninnouon.

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