US293163A - Band sawing machine - Google Patents

Description

'(No Model.) 2 SheetsSheet 1.

' A. 'LQGRAY;

BAND- SAWING MACHINE- Patentedf'eb. 5, 1884;

" sirrno STATES Erica.

PATENT BAND SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 293,163, dated February 5, 1884.

Application filed September G,1SE3.. (No model.) i

tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of referencemarked thereon, which form a part of this specification.

My invention relates to a wood sawing ma chine using a band and capable of being adapted .for use in crosscut, rip,,or scroll sawing, as desired, the objects of the invention being to provide a machine of this class which utilizes both limbs of a band-saw simultaneously for cutting ordinary sticks of cord-wood into three pieces, which may be conveniently operated either by hand or by power, and which may be easily adapted by the operator for crosscut, rip, or scroll sawing.

In the accomplishment of these objects the invention consists in certain novel constructions and combinations of devices, which will be clearly understood from the following particular description, in connection with the accompanyingdrawings, in which- Figure 1 is a perspective view of a sawingmachine constructed according to my invention. Fig. 2 isa rear view of the same. Fig. 3 is a top view of the platform with the rip and scroll sawing table in posit-ion. Fig. 4 is a bottom view of the rip and scroll sawing table detached.

The letter A indicates the main frame of the machine, having the outer standards, a and c, and front and rear pairs of inner standards, I) I), connected and braced by suitable crossbeams. The standards'of the inner pairs are somewhat higher than the outer front standards and. support two parallel guide-beams, D D, entendingflfrom front to rear, and arranged to support asliding table, E, upon which is placed the wood to be sawed when the machine is used for sawing cord-wood. The inner edges of the guide-beams D D are grooved to receive splines or ribs formed on cleats (Z (Z, secured to the under surface ofthe strength in driving the machine.

table E, which thus serve to guide the table and prevent the same from rising. On opposite sides of the guidebeams D D are stationary outwardly and downwardly inclined tables F F, supported at their inner edges by the guide-beams, and near their outer edges by beams g g, which connect the outer front and rear standards. Under the front portion of the guide-beams D D- is a pulley, H, which is fixed upon the front end of a shaft, I, mounted in suitable bearings, and having fixed upon its rear end portion a pinion, 7t, and also a belt-wheel, Z. The pinion k meshes witha toothed wheel, at, which is carried by a sleeve, m,- mounted upon a pin projecting rearwardly from a cross-beam of the frame, said sleeve being provided at its rear end with a radiallyprojecting arm, m provided with a wrist'pin having a crank-handle, a, secured thereto.

The wrist-pin is connected by a link ,n,with one.

end of an int-ermediately-tulcrumed treadleplatform, P, the pivot-s of which have their bearings arranged about on a level with the base of the frame. The mode of operating the machine by the treadle and winch will bepresently explained. The rear standards, a a, are a great deal taller than the front standards and support forwardly-projecting arms q q, the front ends of which are connected by a beam, q, from the middle of which projectsa pivotpin, r, upon which is mounted loosely a pulley, R, directly over and precisely similar to the pulley I-I below. These two pulleys carry a band-saw, S, and their diameter is such that the two limbs of the saw run outside of the guidebars D D and the table E. From the beam q depend two arms, t t, bent horizontally and slotted at their lower ends to form guides for the saw.

In operating the machine by means of the treadle and winch, the operator stands upon the treadleplatform P, .with one foot on each side of its fulcrum and the winch handle seized by both hands in the usual manner, thatby throwing his weight alternately forward and rearward of the fulcrum of the platform and operating the winch accordingly with his arms he utilizes both his weight and The shaftI has rotary motion imparted to it by the toothed wheel and pinion, and the pulley H imparts motion to the saw, which is supported and IOO jecting equally on each side of the table, and

the table is then moved rearwardly, both limbs of the saw will act upon the sticks of wood,

one by an upward and the other by a down ward cut, and each stick will be cutinto three pieces, the outer pieces falling upon the inclined tables F F and sliding off and away from the machine, while the middle piece is readily shoved lengthwise, also to one of the inclined tables, and slides off. Several sticks may be laid upon the table and sawed at the same time. A crosscut-saw of course is used in sawing cord-wood for fuel, and when the machine is to be used for ripping or scrollsawing a band-saw of suitable character will be used instead of the crosscut-saw, and the sliding table will be replaced by a suitable work-supporting table, such as shown in Figs.

3 and 4.

V is the stationary worksupporting table. On its under side and near its front and rear edges it is provided with pivoted lockingarms, a a, the opposite ends of which are formed with tenons u a, to enter the grooves in the inner edges of the guide-beams D D. The table has a slit, a, for one limb of the saw to play through, and a slit, :r, to its edge from said slit, to permit the table to be passed to proper position while the saw is in place. An adjustable and removable gage, 3 is secured to the top of the table in the ordinary manner, and may be used for guiding and gaging such pieces as are to be ripped on straight lines.

. The gage may be removed when scroll-sawing is to be done. The manner of securing the stationary table to the guide-beams will be readily understood. The table is to be laid upon the beams face upward, with the locking-arms between the beams. These bars being then turned and their tenons forced snugly into the grooves of the beams, the table will be held securely. I

Having now described my invention and eX- plained the operation thereof, I claim 1. The combination, in a sawing-machine;

bly supported devices for driving the same,

the limbs of said saw being respectively 10- cated at each side of said sliding table, and an inclined table located at the side of each limb, substantially as set forth.

3. In a band sawing machine, the combination, with the shaft I, carrying the saw-driving pulley, of the pinion secured to said shaft, the toothed wheel gearing with said pinion and provided with a wrist-pin and winch, and the intermediate] y fulcrumcd treadle platform having one end connected to the wrist-pin by a link, substantially as and for the purpose set forth. I

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

ALEXANDER L. GRAY. [L. s] lVitnesses:

HORRILL B. CnEsLEY, H. S. BLUE.

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