US203509A - Improvement in machines for goring veneers for barrels - Google Patents

Description

3 Sheets'-Shee=t 1, C. W. THOMPSON. Machine for. Goring Veneers for Barrels.

No. 203,509. Patented May 7,1878.

N. PETERS, PHOTOLITHOGRAPNER, WASHINGTON. D C.

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C. W. THOMPSON. Machine for yGrorng Veneer-s for Barrels.

No. 203,509, Patented May 7,1878..

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o. W.YTH0MPS0N. Machine for Groringeneers for Barrels.

Patented May 7,1878'.

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UNITED STATES PATENT 'OEEICEQ CLARK W. THOMPSON, OF WELLS, MINNESOTA.

IMPROVEMENT IN MACHINES FOR GORING VENEERS FOR BRRELS.

Speeiiication forming part of Letters Patent No. 203,509, dated May 7, 1878 application led May l, 1877. l

To all whom it may concern: v Be it known that I, CLARK W. THOMPSON, of Wells, in the county of Faribault and State of Minnesota, have invented certain new and.

useful Improvements in Machines for Goring Veneers; and l do hereby declare that the following is a full, clear, and exact description thereof, which 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 the letters of reference marked thereon, which form a part of this specication.

Figure l is a side view of my improved machine. Fig. 2 is a plan view of the cutter-bed. Fig. 3 is a front elevation. Fig. 4 is a hori- Zontal section taken on line .c y, Fig. 3; and Fig. 5 is a detached view of the cutter-head and the cutters or dies which are rigidly attached thereto.

The frame consists, essentially, of the longitudinal sills A, transverse sills A1, and a metallic bed-plate, A2, supported upon blocks a at a short distance above the sills A A1, these parts being firmly bolted together.

. B B B B are four posts, preferably of iron,

rising from the bed-plate A2, surmounted at their upper ends by girts B1 B2 B3 B4, bolted to the posts, and forming a rectangular supporting-frame. C is a loose pulley, and G1 a xed pulley, mounted upon a shaft, c, which rotates in suitable bearings on girt B1.

Shaft c carries two pinions, O2, which mesh with two gear-wheels, D, keyed to ashaft, d, (see Fig. 1,) which is mounted upon the central girts B3. d* d1 are crank-pins projecting from the outer faces of wheels D D.

d2 Z2 D1 E constitute a pitman-frame and knife-carrier, the upper end of which is attached to the crank-pins d1 (Z1, the lower end being arranged to slide vertically in suitable supporting ways or guides, preferably connected to and moving with a platen or follower, to be hereinafter described.

The links or pitmen d2 are connected with the knife-bar `or cutter-head E by means of straps or their equivalents, to permit the desired movement of parts.

The knife or die is made in three sections, e e e1. The end sections are firmly secured to the head E, and are both thicker and wider at their outer ends, their lower cutting-edges corresponding'substantially to the throat or slot f f in the cutter-bed F, Fig. 2, and in profile to the dotted lines f f', Fig. 3, whereby as they (the knives) are forced through the veneer they have a shear-cut. l

The central section, e1, of the knife is free to risev and fall independently of the end sections c c when actuated by mechanism which will soon be described.

The cutter-bed F is secured to the bed-plate A2 in such position that the knives. e e will enter the throats f f.

' Gr Gr are togglelevers, having their upper ends pivoted to the under side of the rectangular frame on posts B B. The lower ends of the toggle-levers are pivoted to the ends of a platen or follower, G'.

\ The outer ends of links cl3 are pivoted to the toggle-levers, their inner ends being connected with crank-pins, which project from crankwheel D2.

`.lhe weighted lever D3 is keyed to the shaft d4 of the crank-wheel D2, which shaft ismounted on girt B4. D4 is a chain or other flexible device, connecting the weighted lever with a girt, D1, moving with the pitmen d2.

Thus it will be seen that the revolution of wheelsD D imparts a rising-and-falling motion to the pitman cutter-frame, and that, as this frame rises above the position shown in the drawings, it lifts the weighted lever, rotates crank-wheel D2 in the direction indicated by the arrow w, draws the central joints ofthe togglelevers toward said crank-wheel, and lifts the platen Gr.

' E1, Fig. 3, represents one oftwo arches or brackets which rise side by side nom the cutter-head E. E2 is a count-wheel, mounted between the arches E1 so as to rotate freely upon an axle, and carrying an arm, e2. e3 is a pawl mounted upon the platen G', and engaging with the ratchet-teeth of count-wheel E2, so that as this wheel rises and falls with the cutter-frame it (the wheel) is moved forward one tooth at each reciprocation. E2 represents one of a pair of bars hung side by side upon pendulum-links c4 c1. c5 c5 are stems or shanks sliding freely in an open space or spaces formed in the cutter-head E, and attached at their lower ends to the center section, e1, of the knife. e is a retracting-spring, which holds the'bars E3 in the position shown, except as hereinafter noted. H is a spur-gear mounted upon the upper frame. H is a pitman connecting the crank 71J of wheel H with the vibrating arrnI by means of a pivot-sleeve, i, which is adjusted upon said arm, and held in place by set-screw i2. Arm I carries a pawl, fi, which actuates a ratchet-wheel, K. L is a spur-gear keyed to the same shaft with ratchetwheel K. Ll is an intermediate gear-wheel, through which motion is communicated to another spurgear, L, for driving the feed-rollers, of which there are four, m m n, and another on the shaft of the wheels K L.

Each pair of rollers is provided with gears, which will time the movement and permit such spreading apart vertically as may be fbundunecessary, and the upper rollers are weighted or pressed downward by springs.

The sheet of veneer is moved vunder the platenand knife by the intermittent motion of the feed-rollers, the relation being suchthat this feed takes place while the knife and platen are up out of the way; and from an examination of the drawings it will be readily understood that as the pitman cutter-frame is descending the togglelevers press the platen firmly upon the veneer until the further downward motion of the weighted lever ischecked thereby. This occurs at about the time that outer points `or ends of the cutters e e reach the veneer. The continued descent of the pitman cuttenframe forces these knives through the veneer and into the slots f f of the cutterbed F, the chain D4 permit-ting the crankwheel D2 and togglelevers G to remain stationary until the knives have been withdrawn from the veneer, and all dan ger of splittin g the veneer thereby avoided.

At each reciprocation ofthe knives or 'cutter, and corresponding advance of the veneer, the count-wheel E2 is rotated one tooth, as has been explained, until the arm c? on said wheel is moved into a horizontal position, in which latter position the outer end of this arm will engage with one of the links e, and move bothlinks into avertical position in line with the stems e5 e5, sothat during the next downward stroke of the pitman critter-frame these links e4 e4 will force the central section el of the knife down and out the sheet between the inner points of the gores cut by the sections c c ofthe knife, thus completely cutting the gored portion of the sheet from that portion which has not been gored, as lwill be understood without further explanation.

The distance which the sheet of veneer is fed forward at each Vstroke of the knife-or, in other words, the width of each stave-is regulated by the position of the pivotsleeve il upon the arm I, and the number of staves which are formed in one piece'is governed by the number of teeth in the countwheel E2, when the machine is working automatically; but the sheet may be cut in two at any desired point moving the links e4 e4 into a vertical position-by hand.

It will, of course, be understood that when the section e1 is not .employed for thus severing the sheet, its edge merely rests upon the veneer and the cutter-head E straddles it, the stems or shanks e5 e5 passing between the bars E3 and by the sides of links e4 e4.

By an examination of Fig. 4 it will be seen i that if the machine be so operated that the knife el shall sever the sheet on the dotted lines m, Fig. 4, the veneer will be formed into staves, the width of which will be determined by the position of the pitman H on the pawllever I.

. It will also be seen, by an examination of Fig. 5, that the parts which substantially constitute the goring-die are the cutterhead E and the dies e e, the outer ends of which pro ject downward, asis indicated at e* e", l3ig. 5, in such manner that as they are forced down through the veneer they operate with a shearcut.

It will also be seen that if these dies are cut upon a vertical transverse plane--say upon the dotted line n u, Fig. 5the edges thus exposed will have parallel sides, so that the cutting-faces of the dies may be ground, when dulled, without changing the shape or size of the gores.

The result of employing this form of diesthat is, converging in both directions from eX to e* is, th`at I produce a shearcut from the edges of the sheet toward its center, avoid splitting the sheet, and can grind them (the dies)f without changing the form of the gores.

l. ln a machine for cnttin g gores in veneers, the combination, with a bed provided with slots or throats corresponding substantially to the `desired form of gore, of mechanism for feeding the veneer over said bed, two reciprocating knives or dies whichcut gores in both sides of the veneer, and an independently-acting cutting-off knife, arranged between the inner points ofthe goring-knives to sever the sheet, vsubstantially as set forth.

2. In a machine for goring veneer, the combination, with goring knives or dies which form gores in the sides of the veneer, and an intermediate independently-acting knife which s'evers the sheet, of an automatic mechanism which throws said intermediate knife into action at predetermined intervals, substantially as setforth.

3. In a machine for gorin g veneer, the combination, with the goring knife or dies and the knife which severs the gored sheet from the ungored sheet, of an automatic mechanism which throws said severing-knife into action at predetermined intervals, and which also permits the operator to throw said severing-knife into action at will. l

4. The combination,in a machine for .gering veneers, of the bedplate E, provided with throatsy f f, and the cutterehead E, carrying the 8. In a machine for goring veneer, the combination of the feeding-rollers m fm n n', gear- Wheel L L1 L2,paWl-1ever I, and adjustable pitman I-I, substantially as set forth.

In testimony that I claim the foregoing as my own I affix my signature in presence of two Witnesses.

CLARK W. THOMPSON.

Witnesses C. W. BUNN, D. C. WAGNER.

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