US2488432A - Lever actuated remotely controlled drag saw - Google Patents

Description

2 Sheets-Sheet 1.

E. F. PAYNTER Inventor EARL 5 PA Y/VTER LEVER ACTUATED REMOTELY CONTROLLED DRAG SAW Nov. 15, 1949 Filed Dec. 1', 1945 2 Sheets-Sheet 2 Filed Dec.

, Inventor EARL E PAYNTER Patented Nov. 15, 1949 UNITED LEVER ACTUATED REMOTELY CONTROLLED DRAG SAW

Earl F. Paynter, Franklinville, N. Y.

Application December 1, 1945, Serial No. 632,250

Claims. 1

This invention relates to a remotely controlled saw, and more particularly to such a saw adapted for the felling of trees, the blade being horizontally positioned.

A primary object of this invention is the provision of an improved saw mechanism adapted to be positioned against a tree trunk substantially adjacent the ground, and remotely operated either by mechanical or manual means in order to fell the tree and leave a minimum height of stump, thus efiecting a material saving in timber.

An additional object of the invention is the provision of such a saw adapted for sawing in horizontal position, and having spring biased means associated therewith whereby the blade is substantially self-feeding during the process of cutting.

Still another object of the invention. is the provision of such. a device which will be sturdy and durable in construction, reliable and efficient in operation, and relatively simple and inexpensive to manufacture and assemble.

Other objects reside in the combinations of elements, arrangements of parts, and features of construction, all as will be more fully pointed out hereinafter and shown in the accompanying drawings wherein there is disclosed a preferred embodiment of this inventive concept.

In the drawings:

Figure l is a top plan view of one form of saw embodying features of the instant invention, certain concealed parts thereof being indicated in dotted lines.

Figure2 is a view similar to Figure 1 but showing the parts in a different position of adjustment.

Figure 3 is a side elevational view of the device vation, partially broken away showing a constructional element in one position of adjustment.

Figure 8 is a view similar to Figure '7 but showing the latch means in a different position of adjustment.

Figure 9 is an end elevational view of the device of Figures 1 and 2, as viewed from the right.

Similar reference characters refer to similar parts throughout the several views of the drawmgs.

Having reference now to the drawings, the remotely controlled saw of the instant invention is comprised of a channel-shaped frame generally indicated at [0, within which are positioned suit able roller bearing assemblies H, Figs. 3 and 5, comprised of brackets I2 secured within the frame l0, across which extend axles l3 supporting lower bearing l4. Secured to the frame members l2 are upper members l5 carrying axles l6, supporting additional upper roller bearing l1. Between the bearings 14 and H a saw carrying plate I8 is positioned for reciprocation. The plate t8 is so formed as to define a chantie] between depending flanges l9 embracing the bearing M which serve as guides to insure relatively straight reciprocation of the plate, when reciprocated in a manner to be more fully described hereinafter.

Pivotally secured, as by a pivot 20 to the extreme forward end of plate I8, is a transversely extending plate 2!, which has secured to one extremity thereof a saw blade 22'. A stop pin 20a is provided to limit movement of pivot member 2i when plate I8 is moved rearwardly in a manher to be hereinafter described. The opposite extremity of the plate 2i engages one end of a tension spring 23, the opposite end of which is secured to the extending portion 24 of a plate 25 secured as by bolt 26 to the plate IS. The tendency of the spring 23 is to bias the blade to the extreme position shown in Figure 2, that is to pull it about the pivot to a point completely beyond toothed guide member 21. The V-shaped guide member 21 is secured to the extreme forward end of the frame to and in the operation of the device is positioned about a tree trunk to be sawed in order to properly align and guide the saw blade 22.

As best shown in Figures 3 and 6, the rear extremity of the channel H] has pivotally secured thereto, as by a pivot 30, a fork 3| secured as by bolts 32 to a vertically extending handle member 33. Suitable anti-friction washers 34 are positioned between the extremity of the pivot 30 and the sides of the channel It]. The handle 33 has pivotally secured thereto as by a pivot 34 an angularly disposed arm 35, the opposite extremity of which is pivotally secured as by a pivot 36 between lugs 31 secured to the rear extremity of the plate I8. It will thus be seen that forward extends around a suitable pulley means mounted V on the axle 30, upwardly to a control rod 45 provided with a finger trip 46, mounted betweenf brackets 41 on the rear of the handle member 33, and spring biased upwardly as by a-spring 48. The detent 40 is adapted to engage beneath the transverse member when the sam'is suitably 1 retracted.

The rear end of the frame thereto, as by a transversely extending bolt 49, a clamping member 50 provided with a plurality of depending pointed teeth 5! (see Figure 9).

From the foregoing the'operation of the device should now-be readily understandable. When it is desired to utilize the assembly for sawing a tree, the guide member 21 is positioned about the trunk of the tree," the plate I8 first having been fully retracted and latched by the detent 40 so that the blade assumes the position shown in Figure 4. The teeth 5| are then inserted into the ground or the like to hold the frame in operative position, and the latch 40 released by depressing the finger grip 4B. This releases the tension of the spring, and permits the spring to bias the blade 22 closely adjacent the trunk of the tree. The handle 33 is then reciprocated which causes the plate 18 and the blade 22 to move backwardly and forwardly to effect the sawing action, and the spring 23 constantly biases the blade 22 into the out until the tree is completely severed and the blade assumes the position disclosed in Figure 2.

From the foregoing it will now be seen that there is herein provided a device accomplishing all the objects of this invention, and others, including many advantages of great practical utility and commercial importance.

As many embodiments may be made of this inventive concept, and as many modifications may be made in the embodiment hereinbefore shown and described, it is to be understood that all matter herein is to be interpreted merely as illustrative and not in a limiting sense.

I claim:

1. In a sawing device, a frame, a carriage slidingly and guidingly mounted in said frame, means carried by said frame for reciprocating said carriage in a rectilinear path, a member intermediately pivoted to said carriage and having a saw mounted on and projecting from one end thereof, aspring secured to the other end of said member and to said carriage for yieldingly urg- II] has secured 4 ing said saw in a work engaging direction, a first stop on said carriage engageable with said spring secured end of the member for limiting pivotal movement thereof and a fixed stop on said frame ,engageable with the spring secured end of said member in the rearmost position of said carriage for moving said saw into its inoperative position and extending said spring.

2. The combination of claim 1 and a latch means pivoted to said frame and selectively engageable with said carriage for locking the same in its inoperative position.

3. The combination of claim 2 wherein said spring is connected to said frame by a lateral extension thereof, said latch means being engageable with said lateral extension.

4. The combination of claim 3 wherein said frame consists of a channel member, said carria'ge being journaled in said channel member by pairs of vertically spaced rollers, said latch means being disposed within said channel member.

5. A sawing device including a channel-shaped frame, upper and lower guide rollers journaled in said frame, a carriage slidably supported between said rollers, means for reciprocating said carriage, a plate pivoted intermediate its ends to said carriage, a saw carried by one end of said plate, stop means mounted on said carriage for limiting the pivotal movement of said plate in either direction of rotation, a second stop means mounted on the frame and engageable with the other end of said plate for causing pivotal movement thereof to osition said saw in its inoperative position upon extreme withdrawn movement of said carriage and resilient means connected between said carriage and member for urging said saw in a curvilinear path into a work engaging position.

EARL F. PAYNTER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS France Oct. 16, 1933

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