US431714A - Sawing-machine - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.) v H. A. AXTELL.

SAWING MACHINE.

Patented July 8, 1890.

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SAWING MACHINE Pa gented July 8 1890.

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HENRY A. AXTELL, OF MONTAGUE, MASSACHUSETTS.

SAWl'NG-MACHIN E.

SPECIFICATION forming part of Letters Patent No. 431,714, dated July 8, 1890.

Application filed December 18, 1889- Serial No. 334,149. (No model.)

To all whom it may concern:

Be it known that I, HENRY A. AXTELL, a citizen of the United States, residing at Montague, in the county of Franklin and State of Massachusetts, have invented certain new and useful Improvements in Sawing-Illachines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improvement in machines for sawing by gang-saws; but more particularly for sawing the scales of scaletang knivesa large number at a time.

It consists, principally, of. a gang of saws fixed upon a shaft, and a feeder adjacent thereto operated automatically to feed the material to be sawed to the saws. In connection with the shaft for the saws I have arranged suitable belting'and pulleys, by which from the main driving-shaft of a motor the saws are driven, and I have also provided a set of drums to bear on the,to'p of the material to be sawed as it moves toward the saws. The feed of the saws is effected by means of a screw revolved through the medium of beltconneetions and pulleys with the power, and a corresponding notched block normally in engagement with said screw, all of which will' be explained hereinafter.

In my drawings, Figure 1 is a plan or top view of the table and such other parts as are in view. Fig. 2 is a side elevation of the same. Fig. 3 is a View showingin detail the arrangement of the journal-bearings of the saw-shaft. Fig. 4 is a partial end or front view showing the saws, &c. I

Similar reference-letters indicate like parts in all of the figures.

Referring to the drawings, 1 represents the several saws of the gang, which are preferably circular in form,'and with any suitable teeth, fixed with separators on a shaft 2, provided with pulleys 3 at and supported in cylinders 5, fixed in yoke-bearings 6. The yokes 6 are provided with shanks '7, which fit into box-bearings 8, secured to the table of the machine. Brackets 9, secured to the sides of the table and projecting inward, are provided with screws 42, which enter the ends of shanks 7, and screws 43 serve to secure the cylinders 5 to the yokes 6, so" that said yokes may be lowered or raised by the screws 42 to regulate the depth of cut of the saws, and by means of this arrangement of cylinders and yokes the saws and their shaft may be removed and replaced with facility.

The table of the machine is formed of a frame with, upright and horizontal beams placed in rectangular form and covered with atop made of three pieces 10 l1 l2, hinged at on shaft 31, which arrangement is for the purpose of revolving the drum 15 to carry oif the sawed scales. Portion 10 of the table has a spring-cushion 40, the tension of which is regulated by a screw 45, which enters the said portion of the table and the frame of the same. As there is a natural tendency in the saws to lift the block from which the scales are sawed, it is found of advantage to employ a yielding means connected with the" hinged top for holding the block to its work. The spring-cushion 40, together with the roller which bears upon the said block, are provided for this purpose.

Upon the table-top piece 11 are guide-bearings 19 20 for a rod 21, which latter is movable longitudinally in said bearings, carrying with it the pusher 22. Secured to the guiderod 21 at its end opposite the pusher 22 is an arm 23, to which is hinged a bar 24, extending under the table-top, terminating with a handle, and secured to the underside of said bar is the toothed or notched block 25, adapted to the table provided with pulleys 29 and 46. A long shaft 31 is journaled upon beams in the lower part of the table-frame, and said shaft has fixed thereon pulleys 32 33 34 35 36. A band 37, shown in dotted lines, connects pulley 33 of shaft 31 with a suitable motor, and from said shaft belts 38 and 39 connect pulleys 3 and 4 of the saw-arbor and pulleys 32 and 34. By means of these pulleys and belts the saws are driven from the motor at the desired speed. Pulleys 46 on shaft 47 and 36 on shaft 31 are connected by asuitable belt to transmit motion from shaft 31 to shaft 47, and another belt connects pulley 29 on shaft 47 with pulley 27 on the screw-threaded shaft 26. The pusher 22 is of rectangular or L form, serving as an abutment and guide to the material to be sawed. Plates 41, of inverted-U shape, secured to the table, are adapted to fit over the bar 24 to limit its upward motion when lifted by the operator to disconnect the screw-gear of the feed.

The several pulleys of the machine connected by belts are to be of sizes to give proper power and speed to the several shafts, so that the saws and the feeding device may be in perfect accord.

Knives commonly called butcher-knives are usually made with the blade and tang of a continuous piece of steel without a bolster, and the handles for them are formed each of two pieces or scales of hard wood, one placed on either side of the tang and there riveted. By means of .my sawing device the scales of the handles of such knives can be produced very rapidly from a suitable block of wood.

In the operation of my machine the notched block and lever being lifted and drawn toward the operator and then dropped for engagement, the block of wood is laid on the table in face of the saws, with one end resting against the L pusher-abutment and one side bearing against the arm portion 49 of said L. During the simultaneous movement of the saws and pulleys of the feeding device the screw-gear, consisting of the screwthreaded portion of shaft 26 and the notched block 25, attached to bar 24, while said shaft 26 is revolving, carries the block to the saws, and the scales for the knives are rapidly separated. As the block of wood moves toward said bar by a suitable arm, as 23, and pro vided with the notched block 25, a pusher 22, carried by the bar, and a screwthreaded shaft 26, operated through suitable pulleys and belts from shaft '31, substantially as specified.

2. The combination, with the saw-carrying shaft, and the saws secured thereon, driven through pulleys and belts from a shaft 31, of the arrangement for adjusting the said sawshaft and saws composed of bearing-cylinders 5, yokes 6 to receive said cylinders, provided with shanks 7, box-bearings 8, secured to the table, brackets 9, and the adjustingscrews 42, and holding-screws 43, as and for the purpose set forth.

3. The combination, with the saw-carrying shaft and saws arranged as described, of the drums 15 16, provided with elastic coverings, the adjustable spring-cushion 40, and the portion 10 of the table, as and for the purpose set forth.

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

HENRY A. AXTELL.

WVitne-sses:

JAMES S. GRINNELL, WM. H. ALLEN.

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