US844899A - Veneer-cutting machine. - Google Patents

Description

No. 844,899. PATENTED FEB. 19, 1907.

B. J. SITTON.

VENEER CUTTING MACHINE. APPLICATION FILED AUG. 8,1906.

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PATENTED FEB. 19

B. J. SITTON. VENEER CUTTING MACHINE. APPLICATION FILED AUG 8,1906

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No. 844,899. PATENTED PEB. 19, 1907. B. J. SITTON.

VENEER CUTTING MACHINE. APPLIOATION FILED AUG.B,1906.

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No. 844,899. PATENTBD FEB. 19, 1907.

B. J. SITTON.

VENBER CUTTING MACHINE. APPLIOATION FILED AUG.a,19o.

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No. 844,899. PATENTED FEB. 19, 1907.

' B. J. SITTON.

VENEER CUTTING MACHINE. APPLIoATIoN FILED Auo.a,19os.

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BENJAMIN J. SITTON, OF SALISBURY,

SIXTH TO EDWIN R. OVERMAN NORTH CAROLINA, ASSIGNOR OF ONE- AND ONE-THIRD TO JOSEPH J.

KINCAID, OF SALISBURY, NORTH CAROLINA.

' vENEEFi-CUTTING MACHINE.

Specification of Letters Patent.

Patented Feb. 19, 1907.

Application nea Angia 8,1906. Serin No. 329,718.

To all whom it mayconcernl- Be it known that I, BENJAMIN J. SITToN, a citizen of the United States, residingat Salisbury, in the county-of Rowan and State of North Carolina, have invented new and useful Improvements in Veneer-Cutting Machines, of which the following is a specification.

\ The invention relates to veneer-cutting machines, and the object of which is to provide a machine of this character for cutting veneer from quartered oak or other woods which shall be simple in construction, durable, efficient in operation, and inexpensive ifi the manufacture and in which the necessary l adjustments for cutting a veneer of predetermined thickness may be made with readiness, and, further, such a machine which shall possess such firmness and rigidity of the operating parts as will make the machine durable in use.

A further object of the invention is theA provision of means for lubricating the wearing parts of the machine and also the reduction of the wearing qualities of such parts.

With these and other objects in view the invention consists in the construction, com-- bination. and arrangement of parts, as will be hereinafter describedand as illustrated in the accompanying drawings, embodying the preferred construction of the invention. However, changes, variations, and modifications may be made as come properly within the scope of the claims hereunto a pended without departing from the spirit of) the invention.

In the drawings, Figure 1 is a front view of the machine embodying my invention. Fig. 2 is a rear view thereof. Fig. -3 is an end view thereof looking toward the right of Fig. 2. Fig. 4 is an end elevation of the pressurebar. Fig. 5 is a` transverse section thereof. Fig. 6 is an end elevation ofthe knife-bar. Fig. 7 is a transverse section thereof. Fig. 8 is a fragmentary plan view of the end guidestandard and the log-bed. Fig. -9 is a sectional view of the log-bed and crank-disk connected thereto.` Fig. 10 is a face view of the crank-disk, disclosing the slide-block having the voil-receptacle. Fig. 11 is a central sectional view of-Fig. 12, showing one of the feed-screws having the short releasescrew. Fig. 12 is an end view of Fig. 11.

` several parts are Similar reference characters relate to corresponding parts throughout the several views.

In the drawings the numeral 1 indicates a suitable bed-plate forming the base or foun- (lation of the machine. and upon which the mounted andthe said baselate being secured in place by any suitebla fastenin f means. Extending upwardly from said be -plate 1 are four pedestals 2, ar ranged in pairs and in alinement with each other near opposite ends of the bed-plate, and the same are provided with suitable bearings in which are journaled two shafts 3, extending transversely of the said bed-plate. Each of said shafts is provided with a crankdisk 4, earnA ing a crank-pin 2S,irranged near the periphery of the latter and engages a slide-block 29, having a compartment 29' for receiving oil, the latterin communication with an outlet-port 29, so that oil can be fed to the crank-pin 28 through the hub portion 28aL of the block 29. Said block 29 is adapted to reciprocate in a slot 27 in the back of the log-bed 5x, whereby as the crank-disk rotates the said bed 5 is caused to reciprocate vertically in accordance with the throw of the crank-pin.

The slot 27 is formed by an overhanging x ledge 27a, integral with the log-bed 5, and at the inner upper face thereof is a wearinglate 27 b, held in position for adjustment by bolt members 27 C, passing through the said ledge 27 The bottom of the slot is formed by a guide-plate 27d. Adjustably secured to the log-bed 5 by bolt me .nbers 27e and for decreasing the width of the slot to take up wear caused by the move nent of the block 29 is rovided an outlet-extending flange 27 f the atter having adjustable bolt nienbers 27g, adapted to engage the guide-plate 27d and to hold the same in a fixed adjusted position. The shafts 3 project. sufficiently to the rear of the machine to receive spur-gears 9,' which mesh with a pinion 8, carried by a drivingshaft 7, mounted in suitable bearings carried by the edestals 61, supported on the bedplate of) the machine. This driving-shaft carries a belt-pulley 10 for imparting motion to said shafts and can be provided with any well-known means for starting and stopping the machine at any desired point. Therefore I have not shown the same for the rea- IOO son that an well-known type of frictionclutch may e instituted, so such disclosure is not deemed necessary.

The log-bed is slidably mounted in inclined guides 6, the latter having a wearinglate 6a, secured to the guides 6 by bolt memers 6b, thus forming detachable wearing-4 plates, and for bracing the said guides is provided brace members 6c, secured in any suitable manner to the guides and to the frame of themachine, secured to the sides of the bedlates, so that when thelog-bed is raised and owered by the rotation of the'crankthrough they medium of the crank-pins 28 and blocks 29 the said guides will impart a movement in a diagonal direction to said log-bed with respect to a plane parallel to the V knife, and consequently as theblock of wood carried by the log-bed is moved across the stationary knife the latter will cut the veneer therefrom by what is known as a draw- Extending across the back of the log-bed is a series of undercut grooves 81, in which are slidably mounted blocks 39, through which ss adjusting-screws 32.

atter are adapted to adjust the lowermost blocks 30 and the remaining number for adjusting the uppermost blocks, so as to position the-log on the log-bed at an inclination with respect to the longitudinal. extent of the stationary knife and that when thelog-bed is Y are attached metal plates;

steel, having their -j-inner'edges beveled so as between them when'said p yfor clamping and securing the block to saidl moved to bring the log into position to be acted upon by the knife the latter will cut the veneer 'therefor in a more positive raw-cut manner. The upper ends of the adjustingfand also when moving will not bind the op- I posing screw. Thus it bet-ree to slide on the slidable bolt member SObthroughout the fextenti ofthe slot 3 0a in said' plate, .thereby can be shifted to an inclination with respect -to the alinementof the movement of the vscrews 30 in the log-bed.

Secured to the front of the each side of the machine is forming slideways for guide -brackets 36, upon which are mounted the pressure-bar35 and the knife-bar 34, the latter of whichis held stationary in the desired adjusted tion during the cutting operation, while the log-bedl moves diagonally downward to carry A plurality of the through the medium of bed-plate 1l ona bracket 37;,

feed

` knife-bar the required distance, acconling the predetermined thickness of the vveneer to .be cuton the next cutting motion, and for posithe log in cutting contact with the knife 50 on said bed. Each of the guide-brackets 36 is provided withfa nut 62, through which one end of the feed-screws 11 1passes, the opposite end passing through as ort release-screw 40, rotatably mounted in a nut 3.9, secured to 'the back of the bed-plate and acting against a collar or stop 67 on said feed-screw:

The opposite ends of the knife-bar l34 are provided with j ournals`53 which are mounted in corresponding bearings carried by the guide-plates 36, 'and end flanges 63 on said.

knife-bar are provided with slots 54, through which pass adjusting-screws .55, said screws passing into the guide-brackets L36, and thus providing means for adjusting the angleof the knife-bar. upon th'e knife-bar byset-screws l51 :and bears against a series of adjusting-screws 52, whereby the knife may be properly alined and adjusted upon the knife-bar. 35 rests upon ledges 58 on the ,guide-brackets 36 and is clamped or bolted thereto in any suitable manne The lower edge" of .said pressure-bar is provided with an adjustable pressure-strap 56, which is seated in a recess in said lower edge and is held therein by suitable screws 64. This strap may be lateraiiy adjusted by adjusting-screws 57, which bear upon the edge of the strap and are vreadily accessible for .the adjustment of said strap with relation tothe block.

The Vlinifef50 is supportedV The pressure-bar The feed-screws 11 areconnected'together v and a sprocket-chain 13, so that both screws may be caused to turn simultaneously in the same direction, and the v'proper feed motion is imparted to one of the .screws by means of a cam-disk 14, mounted upon one of the shafts 3, as shown in Fig. 2, where it will be seen thatsaid cam 14 is providedwith a groovel 15 spretiket-wheel s 12 Y IOO in which is coniined. a roller 16, carried by a' vibratinglever 1 7, fulcrumed to the bed of the with an arm-19 on a rock-shaft 44. "lhe arm 19 is connected toa ratchetlever 2l., journaled on a short shaft 24, mounted in suitable bearings on the bed-plate, upon which shaft' -machine at 41 and connected by-a link 18 is alsoxedly mounted a ratchet-Wheel 23,'

adapted to be engaged vby a ratchet 22,08.:- riedv by the arml 21- A' ysprocketV 25 'isv also mounted on said shaft 24 and servesto transmit motion to one of the feed-screws 11 by means' of a sprocket-chain 26 and a sprocketvwheel 12, mounted on said feed-screw. As theshafts 3 rotate, and. the bed returns to v normal position, prior to its cutting or descending motion, 'the cam-disk, 14 will,

through the lever 1.7 the pawl and ratchet 22 and'l23, and the coperating parts, cause the screwsV 11 to turn a predetermined amonnt,..and thuis move the pressure-bar and ished and the bed moves upwardly which the knife has been adjusted with relation to the block or log-bed and the block or log carried thereby. The rock-shaft 44 is also provided with an arm 42, connected by a link 45 with an arm 43, journaled on the feedscrew 11, and connected to or integral with the short release-screw 40. This arm 43A is connected to a similar arm 43 on the other feed-screw shaft 11 by a rod 46, so that move- 43 and likewise the ment of one of the arms short release feed-screw 40 will cause a similar movement of the other short 'release feedscrew whichrelease-screws, it will be observed, bear against the collars 67 on the feed-screws 11 and Work independently of the feedscrews 1 1. I'Ience when lthe cut has been fintothe position for another cut a slight and quick mo- 'apparent that tion will first be imparted to the feed-screws 11 through the mechanism just described, thereby causingl the knife-bar to move back uickly a slight distance sufficiently to clear t e wood on the back or return motion of the bed.

In order to impart a quickback-and-for- Ward motion of considerable extent to the guide-brackets carrying the knife and pressure bars when the cutting of a particular block is finished or to be started, I connect one of the feed-screws 11 with two frictionclutch pulleys 47 and 48, driven by open and cross belts, the lever 49 of the clutch being manipulated to throw either pulley into operative connection with the counter-shaft on which they are mounted, this shaft being connected by a sprocket-chain 46 with a sprocket on said feed-screw, such mechanism being conventionally shown in Fig.. 3.

I preferably cushion both the back and forward motions of the feed-screws and the cooperating parts by suitable dash parts 64,

having their plunger-rods connected to the opposite ends of an arm 66 on the rock- -shaft 44.

From the foregoing description the mode of operation of my improved machine will be readily understood, and it should be noted that I provide three distinct sets of mechanism for operating the feed-screws-one for the normal operation, whereby the knife-bar is moved at the proper time to determine the thickness of the veneer, a second to impart a quick motion and of slight extent as the log-bed returns, so as to remove the block of Wood clear of the knife on the back stroke of the bed, and the third for imparting a quick motion forward or backv and of considerable extent when starting and stopping the cutting of a given log-block. Furthermore', it will be l springing in the center there is provided cenguides 67a, bolted which work against ,short on theface of main frame 1, the same extended to prevent the log-bed from centrally swaying and to give the proper ter bearings 66a,

to prevent the log-bed 5 from l movement thereto during the operation thereof and also to brace the said log-bed.

Having described the invention, what is claimed is 1. In a veneer-cutting machine, the combination with a bed-plate and a stationary knife, of inclined guides arranged centrally' and in proximity to the ends of the bed-plate and havin detachable wearing-plates, a logbed slidabIy mounted in said guides and provided with slots, counter-shafts journaled on the bed-plate, crank-pins carried by the shafts and having slide-blocks provided with oil-compartments'for distributing oil tothe said pins, said blocks engaging said slots, a drive-shaft having connections for operating said counter-shafts, mechanism for actuating the knife to bring the same into operative position with respect to the log-bed and for returning the same to an inoperative osition at predetermined distances, adjustab e screw members mounted in the body of the log-bed, clamping-plates for the log actuated by the screw members, and means for adjusting the knife.

2. In a veneer-cuttin machine, a bedplate forming a base, a p urality of pedestals arranged in pairs and other near opposite ends of the bed-plate and extending upwardly therefrom, shafts extending transversely of the bedlate and having their bearings in the pe estals, a crank-disk fixed to said shafts, a crank-pin arranged near the periphery of the disk, a lo bed having slots formed therein, movabI blocks arranged in the slots and having oilcompartments, the latter provided with openings, said crank-pins in engagement with the movable blocks and the oi contained therein bein ada ted to be fed to the crankpins, incline gui es for the lo -bed arranged at the ends and intermediate t 1e same, brace members for the guides, the latter for directing a diagonal movement of the log-bed when actuated, means cooperative with the log-bed for supporting material thereon to be operated upon, brackets supported on the bed-plate, pressure-bars coperative with said brackets, a knife-bar carried by the brackets, feed mechanism for actuating'the pressure and knife bars to bring the same into'operative position and also for returning said knife to an inoperative position at predetermined distances, adjustable wearing plates for the guides and the slots formed in the log-bed, and means for actuating the shafts to impart movement to the crank-disks.

3. In a veneer-cutting machine, the combination with a bed-plate and adjustable knife, of a lo bed, inclined guides for the log-bed and aving wearing-plates, rotary shafts supported on the bed-plate, crankdisks fixed to said shafts and having crankpins, said log-bed provided with elongated slots, blocks having oil-compartments movin alinement with each IOO able in said slots, said crank-pins on the said i disks inengagement With the blocks, the

-latter adapted to distribute oil to the crankplns, driving mechanism coperative with the shafts, mechanism for actuating the knife to bring the same into operative position knife, sal

log-bed and for returning the same to an inoperative-position at predetermined distances, means on said log-bed for clamping the material to be acted upon thereto,van inclined guide intermediate the log-bed, and bracesy for the respective'inclined guides.Y

4. In a veneer-cutting machine, the cornbination With a bedlate and knife, a logbed, means on the oglbedV for supporting material to be operated upon, inclined guides With respect to the centrally of and at the`ends of the log-bed to bracke/ts also supporting the knife, feedl,

screws` to cause. the `pressure-bar and knife to move in unison into operatlve position with respect to the log-bedl and for returning the` same to an inoperative .position at predetermined distanees mechanism for lsimultaneously actuatingv the feed-screws, and

means for imparting movement to the rotary shafts.

5. In a veneer-cutting' machine, the combination with a bed-plate, of horizontal guides thereon, guide# brackets slidablymounted on said guides, a knife-bar having a knife carried by said brackets, a rassure-bar above said.y knife-bar and' mova le with the brackets, inclined guides on said bed-plates, a log-bed movable'in said' guides, said logbed having slots near itsnppermost edge, blocks lmovable' in Ysaid lslots-and havin oilcompartments, rotary shafts' mounte y onI said' bed-plate, crank-disks carried by the shafts and having crank-pins for engagement with the blocks., said eil-compartments in the blocks adapted to distribute oil to the crank-pins, means for clamping a log'to the log-bed', feed-screws extending transversely sae-,seo

of the bed-plate and engaging the guidebrackets, andmechanism for actuating the feed-screws to cause the knife-bar and pres.- sure-bar to move in unison into operative Sition With respect to the log-bed and for returning the same to an inoperative position.

6. In a veneer-cutting machine, the combination with a bed-plate, of horizontal guides thereon, guide brackets slidably mounted on said guides, a knife-bar having a knife carried by said brackets, a pressure-bar above said knife-bar and movable with the brackets, inclined guides on said bed-plates, 'a log-bed movable in said guides, said logbed having slots near its uppermost edge,

blocks movable in said slotsand having oilcompartments, rotary shafts mounted on saidl bed-plate, crank-disks carried by the shafts and having crank-pins for `engagement With the blocks, said oil-compartments in the blocks adapted to distribute oil to the crankpins, means for clamping a log to the log-bed, feed-screws extending transversely ofv the lbed-plate and engaging the guidef brackets,y

mechanism for actuating the feed-screws to cause the knife-bar and pressure-bar to move in unison into operative position With respect to the log-bed and for returning the same to yaninoperative position, and means for imparting movement to the rotary shafts.V 7. In a veneer-cutting machine, the conrbinatio-n with a bed-plate and a stations knife, of inclined guides having detachable *Y Wearing-plates, a log-bed slidably mounted m said guides and provided with slots in its back portion, counter-shafts journaled on the bed-plate, crank-pins-carried by the shafts and having slide-blocks provided with loilconartments for distributing oil to the era -pins, said blocks said counter-shafts, mechanism for actuating the knife to bring the same into operative position With respect'to the log-bed and for returning the same to an inoperative at' predetermined distances, adjustab ie screw engaging said slots, a drive-shaft having connections for operating' lOO ition members mounted in said slots of the log-bed,

and clamping-plates for the log actuated the screw members vIn testimony' whereof I have hereunto set`v handv in presence of two subscribing Witnesses.l

' BENJAMIN J. srr'roN.

Witnesses: I l

,FT. SMrrn, MARY PORTER.

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