US1210305A - Portable sawing-machine. - Google Patents

Description

A. HAGERMAN. PORTABLE SAWING MACHINE.

APPLlCRTlON FILED APR. 5 1916.

1,210,305. Patented Den. 26,1916.

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APPLICATION FILED APR. 5| 1916.

Patented Dec'. 26,1916.

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ALFRED HAGERMAN,v F CI-IANUTE, KANSAS.

PORTABLE SAWINGMAGHINE.

Specification of Letters Patent.

Patented Dec. 26, 1916.

Application ledvApril 5, 1916. Serial No. 89,157.

To all zo/wm t may concern:

i Be it known that I, ALFRED HAGERMAN, a citizen of the United States, residing at Chanute, in the county of Neosho and State of Kansas, have invented new and useful Improvements in Portable Sawing-Ma chines, of which the following is a speciiication. f

rlhis invention is an improved sawing machine, especially adapted for sawing ed the tops of hedges, stumps, and the like, and adapted for use in connection with a supporting truck which enablesthe machine to be moved from place to place and to be readily guided when in use. f

The object of the invention is to provide an improved machine of this kind which is cheap and simple in construction, which may be readily mounted on or removed from a truck and which embodies power driven means for pulling the truck while the machine is at work, and also embodies means to absorb the shock occasioned by the explosions of the motor, and to prevent the saw from being bent.

rIhe invention consists in the features of construction, combination, and arrangement of devices, hereinafter fully described and claimed.

In the accompanying drawings: Figure 1 is a plan of a sawing machine constructed and arranged in accordance with my invention and showing the same at work in cutting off the tops of a hedge, and in one position in full lines and in another position in dotted lines. Fig. 2 is a side elevation of the same. Fig. 3 is a vertical transverse sectional view of the same on the plane indicated by the line a-a of Fig. 1. Fig. 4 is a detail view. Fig. 5 is a detail view, partly in section, showing one of the standards and its connections.

In the embodiment of my invention, I provide a frame 1 which is here shown as comprising a pair of beams 2, 3, of unequal length and a block t which is arranged between said beams and secured thereto as by means of bolts 5 and at a suitable distanceA from the front end thereof. A controlling lever 6 is secured on the beam 2 at a point spaced from its rea-r end and is also secured on the rear end of the beam 3, said lever being arranged diagonally with respect to the frame and extending rearwardly and from the inner side thereof.

A pair of standard rods 7 extend downwardly from the beam 2, one at and the other near the rear end of said beam. A pair of bars 8 are secured to the lower end of the standard rods and are held in spaced relation by spacers 9 so that the longitudinal slot 10 is formed between the said bars. A longitudinal slot 11 is also formed inthe rear portion of the beam 2. The lower bar 8 is secured to the beam 3 by braces 12. It is also secured to the beam 2 by a brace 13. A brace 14 connects the rear ends of the beams 2, 3. A pair of blocks l5 are secured on the outer sides of the beam 2 and bars 8 by bolts 16 which pass through and are adjustable in the slots 10, 11, so that said blocks are longitudinally adjustable on said beam and bars. An arbor 17 which is vertically arranged is mounted in bearings in the blocks and is provided at its lower end with a circular saw 18 and its upper end with a pulley 19. A guard 20 is secured to the lower ends of the standard rods and extends from the inner side of the frame, said guard is connected to the beam 3 by a brace rod 21. The arbor is movable vertically in the bearings l5 and is provided at a point mid-way between the bearings with a fixed collar 22. Counteracting coil springs 23 are arranged on the arbor and bear between the collar and the bearings. These springs are cushioning springs and serve to counteract the jolts occasioned by the explosions in the motor engine and prevent the saw blades from bending. A suitable motor, which is here indicated diagrammatically as an internal combustion engine 24 is mounted on the frame at a suitable distance from its front end. rIhe motor shaft has a pulley 25 which is connected to the saw pulley 19 by an endless belt 26.

A drum 27 has its shaft 28 mounted in bearings 29, 30, on the beams 2, 3, of the frame at points near the front ends of said beams. The bearing 29 is pivoted as at 31 and the bearing 30 is slidably mounted as at 32. A friction wheel 33 is attached to the outer end of the drum shaft. A suitable lever 34; is provided for shifting the bearing 30 to move the friction wheel 33 into or out of contact with the driving pulley of the motor so that the drum may be rotated by the motor when desired, to pull the machine forwardly and thereby cause the saw which is also driven by the motor, to saw olf the hedge plants and trim them at the desired height above the ground, or to saw ofi' stumps or trees, or do other like work, the drum, 'when thus operated, acting to pull upon and coil up the rope or cable which is attached at one end by a hook or other suitable device to a post or other anchoring object, as will be understood. Y

When in use, the frame of the machine is pivotally mounted on a suitable truck which may be, as here shown, the frontk aXle 36, front wheels 37,' front hounds 38j, and tongue 39 of an ordinary farm wagon, the frame being pivotally mounted onY the center of the axle by means of the king bolt 40. This enables the frame to be swi'in'g to extend the saw beyond one side of the truck, for opera- 'tion on a hedge, or other work, theJ machine being controlled by a person who grasps and operates the lever 6.

The tongue should be slightly longer than is ordinarily employed and the double-tree should be attached ,to the tongue at a point a sufficient distance from the axle to clear the saw when the latter is swung inwardly under the tongue, as indicated in dotted lines in Fig. l.' Vhen the machine is in use, the truck is drawn rearwardly, the rear end of the frame corresponding with whatis ordi- I narily the front end of the' truck. The team is unhitched from the truck when the machine is in use and the truck is guided by means of the tongue. .In small machines, the drum for pulling the machine may be dispensed with.

Copies of this patent may be obtained Yfor five cents each,by addressing the From the foregoing description, taken in connection with the accompanying drawings, the advantages of construction and the method of operation will be readily apparent to those skilled in the art to which the inventionrelates, and while l have described the principles of operation of the device togetherwith the device which I now consider to be the best embodiment thereof, l desire to have it understood thatl the device shown is merely illustrative and that such changes may be made when desired as are within the scope of the claim hereto appended.

Having described the invention, what is claimed is:

A support, a frame pivotally mounted on the support and having a controlling lever, a circular saw having its arbor vertically arranged and mounted in bearings on the outer side and near the rear end of the frame, a motor mounted on the frame and havingI a pulley, a belt connecting said pulley to the saw arbor and a drum shiftably mounted on the frame and having a friction gear adapted to be engaged with or disengaged from the belt pulley.

In testimony whereof I afiX my signature in presence of two witnesses.

ALFRED HAGERMAN.

Witnesses:

EDDE THoRsELL, JOHN E. BoDiN.

Commissioner of Patents,

Washington, D. C.

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