US377708A - Circular sawing machine - Google Patents

Description

(No Model.)l 2 sheets-Sheet 1'..

LD. GATLIN.

IRULAR SAWING MACHINE.

No.3r77,708. Patented 'Feb'. 7, 1888.

GIRGULAR SAWING MACHINE. No. 377,70-8. J Y Patented Peb. 7, 1888.l

NITED i STATES PATENT (OFFICE. l

ABEL D. CATLIN, on BAY CITY, MICHIGAN, As'sIGNoB To THE CHATTANooGA MACHINERY COMPANY, on CHATTANooGA, TENNESSEE.

CIRCULAR srAwlNe MACHINE.-

SPECIFICATION forming part of Letters Patent-No.'377.708, dated'February 7. 1888.

Application inea september 21, 1887. semi No. asomo. (No model.)

To ,alll wwm it may concern:

l Be it known that I, ABEL D. CATLIN, a cltlzen of the United States, residing at Bayv City, in the county of Bay and State of Michigan, have invented certain new and useful Iniprovements in CircularSawing Machines; and I do declare the following to lbe a full, clear, and exact description of the invention, such as will enable others skilled in the' art to which it appertains tomake and use the same, reference being had to the accompanying drawings, and. to the letters and figures of reference i marked thereon, which form a part offthis specification. Y

This invention relates to that class of circular sawing machines which are used for ripping or'slitting lumber to various widths and dimensions; and the improvement and invent1on consist, chiefly, in the improved means of operating the gagev or guide piece which regulates the width of the piece ripped or cut off, in the new and improved means of feeding the lumber to the saw, and in the construction and combination of the several parts of the machine,which.I hereinafter more fully describe and claim.

The 'objects ofthe invention are, first, to obtain a machine for sawing or ripping lumber that is provided with a feeding device which will move the-lumber to'the saw in a sure and positive manner and which entirely relieves the operator from the labor of pushing the lumber toward the saw; and, second, to providea vgage or guide for regulating the width of the piece to be cut which may be more easily and quickly changed and adj usted for pieces of different widths than those in common use and that may be firmly held in any desired position by the adjusting devices. I attain these objects by the devices illustrated inthe accompanying drawings, in Which- Figure 1 is a side view in elevation of a sawing machine embodying my invention. Fig. 2 is a top or plan view of the same.

Fig. 3 is a view of the front end of Fig. 1.

Fig. 6 is a front view of frame for i Fig. is a View of the mechanism actuating the lower feeding-disk, detached.

c represents a base or column support, and b is asaw-arborjournaled in suitable boxes upon 5 5 the upper portion of thecolumn a, and is provided upon'one end with a saw,c, and upon its opposite end with a driving-pulley, d, and also carries a cone-pulley, e, upon itscentral portion. I

f is a saw-table, provided with a slit, g, through which passes the saw, the table being. above the arbor, and is hinged to the rear side' of the column a by the downwardly-extending ange-pieces h, which are pivoted tothe column, and the table is held securely in a horizontal position by the screws ,passed through the lugs j, which project from the column and into the downwardly-extending flange-.pieces A k. This mode of securing the table tothe col- 7o umn allowsthe table and all of the parts connected therewith to be tilted back and freed from the saw, and this allows the saw to be removed from the arbor or gives free and clear access to the saw for iilin'g or setting, Src. 7 5

Firmly secured to one side of the table f, in rear of the saw-arbor, is an upwardly-extending bracket or arm, Z, and upon the lower p0rtion of this arm isjournaled the shaft m, carrying the cone-pulleys n, and also the pinion 8o o, and' in the box t upon the upper portion of the arm Z is journaled the shaft p, upon which is secured the gear-wheel g, which intermeshes with the pinion o. The chain-sprockets r and .s are also placed upon the shaft p, which is .85 alsoV passed through the rearward-extending lugs u of the frame c. The forward end of the frame a reaches in front of the ysaw and is l provided with a shaft, b', journaled in a suitvprovided on its periphery `with projecting teeth, and upon the opposite end of the shaft b is placed and secured a chain-sprocket, df, and a chain, e', is passed over this sprocket, and also over the sprocket r', and thereby a proper rotary motion is impartedto the feeding-disk c.

By hanging the rear end of the frame c to the shaft p the front end of the frame is al- IOO lowed to move upward to any desired position, and the movement of the driving-chain which imparts the rotary movement to the feeding-disk c will not be affected thereby. Beneath the table f, and in front of the saw, is placed a frame, f', and to the rear end of the frame is journaled a shaft or arbor, g, upon one end of which is placed a feedingdisk, h', provided on its periphery with teeth which reach up ward and through the table f, a slot being provided through the table for that purpose in alignment with the saw, and upon the opposite end of the shaft,which reaches beyond the outside of the table, is mounted a sprocket-wheel, i. In front of this sprocketwheel i', and secured adj ustably` by a slot, 0, and nut p to the downwardly projecting flange-piece la, is a stud, j', upon which, and in alignment with the sprocket t, is journaled the sprocket- 7s. A driving-chain, Z', is passed around the sprocket s and the sprocket k', bringing the lower portion of the chain to pass over and engage with the sprocket t", which imparts a rotary movement to the shaft g' in the opposite direction to the motion of the shaft b.

The frame j is pivotally secured to the under side of the table by a bolt, m', passing th rough the central portions of the side pieces, n', and through lugs o, extending downward from the table.

One of the side pieces, a', of the frame extends forward toward the front edge of the table, forming a lever, a, and a spring, p', is placed between the lever and the table,which operates to bear downward upon the lever n, and this raises the pieces a and shaft g and feeding-disk 7L.

q is a gage screw or stud passing through the free end of the lever a, and with its upper end secured to the under side of the table j', and with ils lower end reaching below the lever n, and provided with a nut, g, which, being turned on the stud, raises the lever n and lowers the disk h', and by this means the feeding-disk can be regulated to reach through the table to any required distance, or can be withdrawn entirely and held from engagement with the piece to be sawed, if desired.

r" is a set-screw passed through a threaded opening in the lever a, and with its upper end resting against the under side of the table f, which, operating in conjunction with the gagescrew Q', retains the disk h in any desired position firmly and rigidly, if necessary.

' wheels q and o, and the chains e and Z, to the arbors g and b and the feeding-disks h/ and c. The piece to be sawed is then passed between the disks h and c', and the frame f', which carries the disk h', being rendered adjustable by the spring p, allows the piece to be sawed to lie firmly and evenly upon the table, while the teeth of the disk catch into the under side of the piece and propel the same toward the saw. The upper frame, a', being hung at its rear end allows the front end, which carries the disk c', to rise without other manipulation than presenting the piece to be sawcd between the disks, when, as the teeth of the disk c catch upon the piece, the frame is raised until the teeth of the disk engage with the top of the piece, and the disk c then cooperates with the disk la to propel the piece toward the saw. By this arrangement of the disks and their actuating mechanism a piece of any thickness may be passed between the disks without delay or adjustment, and the disks being in alignment with the saw the impression of the teeth of the disks upon the piece to be sawed is cut out or removed by the saw as the piece is cut. Upon the surface of and lengthwise of the table is placed a gage-piece, s', the ends of the piece reaching-somewhat beyond the front and rear edges of the table, and are provided with downwardly projecting lugs t', which also reach under and catch beneath the edges of the table. Projecting downward from the under side of the table are the front and rear supporting-brackets, d and e, and through the lower ends of these brackets is passed the shaft c. To the rear end of the shaft 'v' is secured an arm, b, the outer or free end of the arm being pivoted to one end of the' connectingpiece c, and the opposite end of the piece c is pivoted to the rear lug t'of the guide-piece.

Upon the front end of the shaft t is secured an arm, to the free end of which is pivoted one end of the connectingpiece g, the oppo` site end of the piece g being pivoted to the lug t on the front end of the gage-piece s. The front bracket, e, is provided with aquadrant, h, and the arm f is provided with a handle or lever, i, having a projecting p0rtion which reaches to the j rear side of the quadrant, and a bolt, j, is passedthrough the leverjust outside of the periphery of the quadrant, and provided with a head portion, 7c, so formed as to reach over the rear side of the quadrant, and a levernut, Z, is placed upon the front end of the bolt, and this nut, on being tightened against the arm, draws the head k against the rear side of the quadrant and securely retains the lever in position, which also secures the gage-piece s in position.

The operation of this device is that the nut l is loosened and the shaft 1) is oscillated, which swings the arms b and f, and these arms, being connected to the gage-piece s' by the connecting-straps c and g", operate to draw the gage-piece to the desired position. The nut Z is then tightened, and the gagepiece is held firmly in position until the nut is again loosened. The 'advantages of this device for adjusting the gage-piece are that the adjusting mechanism is in a position to be easily reached by the operator, and is quickly and easily operated or changed from one position to another without interfering in any way with the handling or manipulation of the piece to be sawed.

IOO

IIO

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a sawing-machine, the combination, with a saw-table and a gage-piece, s', upon the surface of the table and provided with ylugs t', extending over and reaching beneath the edges of the table, of a shaft, o', journaled in brackets beneath the table and provided with the extending over and beneath the edges of the table, the shaft 'v' beneath the table and pro vided with the rear arm, b, connected by the piece c to the rear 4lugk t', and with the front arm, f, connected by the piece g to the forward lug t', the bracket d, supporting the rear end of the shaft fv, andthe bracket e, supporting the front end of the shaft o and provided withthe quadrant h, of the lever i, secured to the shaft o and reaching beyond the periphery of the quadrant, and a bolt, j", passed through the lever andprovided with a head reaching over the quadrant, and a lever-nut, l, substantially as and for the purpose set forth.

3.v In a sawing-machine, the combination,

with an oscillating frame pivotally secured beneath the saw-table and supporting on its rear free end a shaft provided with a rotary motion, and carrying a feeding-disk reaching through the saw-table,- and having a forward-extending lever, n, of a spring, p', bearing downward upon the lever n, whereby the feeding-disk is held in engagement with the piece to be sawed, substantially as set forth.

4. In a sawing-machine, the combination,

with an oscillating frarnepivotally secured bel neath the saw-table and supporting upon its rear free end a shaft having-a rotary motion, and carrying a feeding-disk reaching through the saw-table, and having a forward-extending lever, n, and a spring bearing downward upon the lever, of an adjusting bolt, g', passed through the lever n, and with one end vrigidly secured above the lever, and provided with a nut, g", on the opposite end and beneath the lever, substantially as and for the purpose set forth.

5. In a sawing-machine, the combination,

with a saw and saw-table, and an oscillating g frame pivotally secured beneath the table and carrying upon its rear free end a shaft havingA on one end a feedingdisk and upon its opposite end a chain-sprocket,l i', of a stud, j', adjust ably secured in the slot o, a sprocket, It', upon the stud, and a chain, Z', passed o ver the drivingsprocket s andthe sprocket 7c', and with its lower portion engaging with the sprocket i', substantially as and for the purpose set forth.

In testimony whereof I affix mysignature in presence of two witnesses.

' ABEL D. oATLIN.

Witnesses:

JAs. E. THOMAS, W. H. POWER.

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