US672498A - Sawing-machine. - Google Patents

Description

un. 672,498. Patented Apr. 23,19m. A ToTmLL SAWING MACHINE. (Application led Dec. 19, 1900.)

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(N0 Modem,

Wgesse s Patented Apr. 23 IQDI. A. TOTHILL. sAwmG MAcHmE. (Applicatin led Dec. 19, 1990.)

2 Sheets-Sheet 2.

l (Nn Model.)

UNITED STATES ALFRED TOTHILL, OF OLEAN, NEW YORK.,

SAINGMACHENE.

SPECIFICATION forming part of Letters Patent No. 672,498, dated April 23, 1901.

Application led December 19,1900. Serial No. 40.439. (No model.)

To @ZZ whom t may concern:

Be it known that I, ALFRED TOTHILL, a citizen of the United States, residing at Olean, in the county of Oattaraugus and State of New York, have invented a new and useful Sawing-Machine, of which the following is a speciiication.

The invention relates to improvements in sawing-machines.

Theobject of the present invention isto improve the construction of sawing machines and to provide a simple and comparatively inexpensive one adapted for cutting up logs of short lengths and designed more especially for enabling knotted and crooked logs, which are usually left in a forest to rot owing to the difficulty of splitting them with an ax, to be readily cut into cord-wood.

The invention consists in the construction and novel combination and arrangement of `parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a perspective view of a sawing-machine constructed in accordance with this invention. Fig. 2 is a transverse sectional view. Fig. 3 is a longitudinal sectional view on the line 3 3 of Fig. 2. Fig. 4 is a similar view on the line 4 4 of Fig. 2. Fig. 5 is a transverse sectional view of the log-trough, taken on the line 5 5 of Fig. 3. Fig. 6 is an enlarged detail sectional view illustrating the construction of the guides for the upper flights of the endless chains. Figs. 7 and 8 are detail views illustrating the construction of the endless chains.

Like numerals of reference designate corresponding parts in all the figures of the drawings.

1 designates the frame of themachine,which frame is provided with an approximately rectangular portion 2 for supporting the gearing for operating a saw 3 and a pair of endless chains 4, which are adapted to carry a log` to the saw. The frame of the machine is provided with a longitudinal log-trough 5, having inwardly-inclined inner faces and conforming generally to the configuration of the log and adapted to guide the same to the saw and form a firm support for the log. The trough is composed of two sides spaced apart and connected by transverse cross-pieces 6,

and each side is provided with au upper longitudinal bar or beam 7 and a lower longitudinal supporting-sill 8, which rest upon the cross-pieces 6, as clearly illustrated in Fig. l of the accompanying drawings. The longitudinal bars 7 of the trough are provided with inclined inner faces 9 to form the said inclined faces of the trough, and the said upper longitudinal bars project inward beyond the inner faces of the lower sills S and have secured to them a pair of longitudinal guides lO for the upper flights ofthe endless chains 4. The longitudinal guides, which are spaced apart to receive the saw, consist each of a horizontal bottom 11 and vertical longitudinal flanges or walls 12 and 13, and each guide, which is supported at intervals by brackets or braces 14, is provided with a longitudinal flange 15, disposed horizontally and extending outward from the outer wall of the guide. The horizontal flange 15, which is arranged in the same plane as the bottom of the guide, is interposed between the lower face of the adjacent upper longitudinal bar 9 and the contiguous sill, which is recessed to receive it. By this construction the longitudinal guides are firmly supported within the trough 1or way which receives the logs.

The sprocket-chains, which have their upper iiights arranged in the longitudinal guides 10, are parallel with each other and are composed of links 16 and 17. The links 17, which are disposed in pairs, are pivoted to the ends of the single links 16 and form spaces or openings for lthe teeth of sprocket-wheels 18 and 19, which receive the chains. The sprocket-wheels 18 and 19, which are arranged in pairs at the front and rear ends of the trough 5, are mounted upon shafts 20 and 21, journaled in suitable bearings of the frame. The chains are provided at intervals with projecting dogs 22, disposed in pairs, as clearly illustrated in Fig. l of the accompanying drawings, and adapted to engage the end of a log at opposite sides of the center of the bottom, whereby the said log is firmly held and is positively carried to the saw 3. These dogs are arranged at intervals of about five feet, as the logs to be cut are about four feet, and they do not have to be driven into the logs, and the latter are not clamped in position and do not require the handling IOO belt 26 with a larger pulley 27 of :a shaft 28, e1

The

arranged parallel with the saw-arbor. shaft 28 is connected by frictional gears 29 and 30 with a Icounter-shaft3l, which is con-A nected by spur-gearing with the shaft 2l, that carries the sprocket-wheels 19 'for the endlessv chains. The frictional gears 29 and 30 are preferably provided with broad flat :bearingfaces, and the shaft 3l is capable of a limited lateral movement to'carry the wheel 30 into and out -of engagement with the lwheel'29 to` start and stop the endless chains, whereby' the Asawing-machine may be thrown vinto andi out vof operation without starting or stopping The speed of the saw-arbor is reduced by the 'belt-V the power for driving the saw-arbor.

gearing which connects the saw-arbor with the shaft 28, and the frictional gear and the spur-gear further reduce the speed, as the wheel 29 is smaller than the wheel 30 and the,

spur-pinion 32 is smaller than the gear-wheel 33. The pinion 32 is mounted on the shaft 3l, and the gear-wl'eel 33 is connected with the shaft 21.

The laterally-movable shaft 3l may be` mounted in any suitable manner, land it is connected with the upper arm of an upright lever 34:, fulcrurned between its ends on the frame of the machine Aand haying its lower 'end connected with an arm 35 of a rock-shaft 36. The rock-shaft 36, which is journaled in suitable bearings 37 of the saw-frame, is provided with an upwardly-extending handle located between the ends of the rock-shaft and adapted to be readily grasped by the operator. The arm 35, which is arranged at the front end of the rock-shaft, extends downward and is connected with the said lever 34 by rods 38'a11d 39, which are adjustably secured t0- gether at their adjacent ends by a turnbuckle 40, whereby the length ofthe connection may be varied. When the handle of the rock-shaft is oscillated, the shaft 3l ywill be moved laterally and the wheel 30 will be car ried into `and out of engagement with the wheel '29.

The circular saw is adapted for making regular cuts, and pieces of any desired size may be cutfrom a log. The logs may be rapidly placed in the trough 5, and the operation of'sawing short logs into cord-wood is quickly effected. The sawing-machine will be found especially advantageous for cutting into cord-Wood crooked and knotty logs, which The when logs are 'cut for the manufacture of wood-pulp, wood-alcoholyand the like are usually left on the ground, for the reason that they can be split with an ax only with great difficulty, and it will be apparent that the machine will enable much material to be savedand utilized lwhich would otherwise be wasted.

`-Itwill -be seen that the trough and the endless chains form an efficient conveyer for feeding the logs to the saw and that logs of ,greatly-varlying diameter -can .be rapidly nalguides located at opposite sidesof-the saw and provided with longitudinal anges, and a pair lof v'endless lchains having their upper liights arranged within the guides and-'located at opposite sides ofthe saw'and held against lateral movement by the'tl'anges of the guides,

' substantially as described.

2. In asawing-machinathecombination of 'a frame provided withatrough composed of two Asides spaced apart, a sawarranged in the space between the sides of the trough, the longitudinal vguides mounted-on the sides of the trough and Vprovided Withlongitudinal flanges and having brackets or braces arranged at intervals, andthe endless chains havingupper flights arranged Within 4thelongitudinal guides, substantially as described.

3. Ina sawing-machine, thecombination of a frameprovided with 'a trough composed of sides spaced apart, eachside being provided with upper and lower longitudinal bars, a saw arranged between the sides of the'trough, the longitudinal guides located at Iopposite sides of theisaw and provided with depending brackets to fit against the lower longitudinal bars and having longitudinal flanges interposed between thesaid bars, and endless chains located at opposite sides of thesaw and having upper flights arranged within the said guides, substantially as'described.

In testimony that I claim the foregoing as my own I have hereto affixed my'signaturein the presence of two witnesses.

ALFRED TOTHILL. A

Vitnesses:

J. R. J EWELL,

PETER JN0. MESSU.

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