US1338704A - End-matcher - Google Patents

Description

W. S. SHERMAN.

END MATCHER.

APPLICATION FILED JUNE 29, I916.

1,338,704. Patented y 4, 1920.

5 SHEETSSHEET I.

17' ran/v0. I i

W. S. SHERMAN.

END MATCHER.

APPLICATION FILED JUNE 29, 1916.

5 SHEETS-SHEET 2.

Lim arr-00M! 5 SHEETSSHEET 3.

Patehted May 4,1920.

- W. S. SHERMAN.

END MATCHEIL APPLICATION men :uuzzs 191s.

w. s. SHERMAN. END MATCHER.

APPLICATION FILED JUNE 29, I916.

1.... 22. 57/4 Z NEW/1%:

5 SHEETS-SHEET 4.

Patented May 4,1920.

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IMM'W W. S. SHERMAN.

END MATCHER. I

APPLICATION HLEDJUNEZQ. I916,

1,33 ,704. Patented May 4,1920.

5 SHEETS-SHEEP 5.

WILLIS S. SHERMAN, OF MILWAUKEE, WISCONSIN.

END-'MATCI-IER.

0. 7. v /2.0m it may concern:

Be it known that I, lViLms S. SHERMAN,

a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Vii cousin, have invented new and useful Improvements in End-Watchers, of which the following is a description, reference-being had to the accompanying drawings, which are a part of this specification. 7

This invention relates to end matchers and the like and has for its object to provide for independent adjustment of the presser bars of the work feeding passageway.

Another object of the invention is to proride for quickly opening up the work feeding passageway to permit the removal of a strip which may have become jammed therein and then restoring the normal conditions without affecting the adjustment of the presser bars.

Another object of the invention is to so arrange the presser bars with relation to the presser head that the end of the work held in a bent position as it passes through the work feeding passagewayso that the end will be cut the same on all strips whether they are straight or warped in either direction.

Another object of the invention is to improve generally upon details of construction of such end matchers.

lVith the above and other objects in view the invention consists in the end matcher as herein claimed and all equivalents.

Referring to the accompanying drawings, in which like characters of reference indicate the same parts in the different views,

Figure 1 is a front view of an end matcher constructed in accordance with this invention, parts being broken away;

Fig. 2 is an end view thereof;

Fig. 3 is a transverse sectional view through the work guiding and clamping parts forming the work feeding passageway;

Fig. 4: is a plan view of the adjustable guide means for the presser bars;

Fi f is a horizontal sectional view there- Fig. 6 is a view showing the pair of pres sure bars next to the cutters, and a strip of tapering work being squared by the pres sure bars and showing in dotted lines the manner in which the work feeding hook Specification of Letters Patent.

Patented May 4, 1920.

Application filed June 23, 1916. Serial No. 106,573.

bars move the work into face contact with the head block;

Fig.7 is a similar view of the other pair of pressureba-rs;

Fig. 8 is a view of the pressure bars shown in Fig. 6, showing the strips of work traveling thereon;

Fig; 9 is, a View showing the manner in which the work is moved into face contact with the head blockwhen the front edge of the work is narrower than its rear edge; 7 V

10 is a view showing the manner in which the guide groove is cut in the bottom of the work parallel with the face of the work when the work is tapered;

Figs. 11 and 12 are side and plan views respectively of the point of the knife edge of one of the pressure bars next to the cutter heads;

Figs. 13 and 14- are side and plan views of the points of the knife edges of the other pressure bars;

Figs. 15 and 16 are front edge views of the respective forms of knife edges;

Fig. 17 is a plan view of the pressure bars showing the arrangement of the knife edges thereon.

In these drawings 20 indicates a main frame or casing inclosing suitably operated driving mechanism controlled by a pin clutch 21 for oscillating a swinging arm 22 which feeds work through the machine.

An oppositely shouldered knee portion 23 of the frame having adjustable pressure bars under spring pressure constitutes a work supporting table between which and an overhanging head block 24 of the frame is formed a horizontal work feeding passageway through which work is, mechanically fed past the cutters with each cycle of operation of the machine.

A vertical saw supporting frame 25 is connected at its edge to the rear face of the main frame, the points of attachment being with the base of the main frame below the knee and with the head block 24. Adjustably mounted on one side of the saw supporting frame 25 is a suitably driven arbor carrying a cut-off saw 26, while other suitably driven arbors adjustably mounted on the other side of the saw supporting frame 25 carry tongue cutting saw blades 27,

though the latter may be replaced by a single roove cutting saw if desired.

T 1e head block 24 is provided on its bottom surface with a pair of parallel, horizontal, grooved guide rails 28 which form the bearing surfaces for engaging the work, and therefore constitute the upper wall of the work feeding passageway. These guide rails 28 also form opposite grooved guide- Ways for a slide 29 which is reciprocated by the lever 22 and carries the work engaging hook members 30 receding within the deep grooves in the bottom of the guide rails.

The connection between the lever 22 and the slide 29 is such as to produce the lowering and the raising of the work feeding hook rods 39 during the feeding movement thereof and the return movement thereof respectively.

A pair of clamping rods 44 pass through the central upstanding portion of the knee 23, and while free to move longitudinally are prevented from turning therein by having central enlargements 45 approximately square in cross section fitting in openings of a similar shape in this portion of the knee. A pair of blocks 46 are clamped to the opposite faces of the said upstanding portion of the knee by means of the clamping rods 44 passing through somewhat larger openings through the blocks and having nuts 47 threaded on their ends and hearing against the blocks.- The blocks 46 are adjustable vertically, each having a rotatably mounted cam rod 48 passing longitudinally therethrough and provided with eccentric grooves 49 at two or more points which engage with vertical jack pins 50 bearing on the shouldered portions of the knee, as clearly seen in Fig. 3. The eccen tric grooves 49 are similarly disposed so that in one position of the rods 48 the pins 50 are all projected to their maximum extent, and the blocks 46 are therefore raised to their highest position, as shown in Fig. 3, while in a diametrically opposite position of said rods 48 the pins 59 are allowed to recede into the eccentric grooves 49 to permit the blocks 46 to be lowered, the openings of the blocks through which the clamping rods 44 pass permitting of such vertical adjustment of the blocks. The square enlarged middle portion of the clamping rods 44 being slidable through the upstanding portion of the knee allows both blocks 46 to be clamped in place or released for adjustment bythe turning of nuts on one end thereof. The ends of the jack rods 48 are squared to receive a Wrench or crank handle by which 7 they may be turned, and stop collars 51 are clamped thereon and have oppositely extending stop lugs to engage stationary stop pins 52 to confine the movements of the jack rods to a half turn or from one extreme position to the other.

Each of theblocks 46 has a pair of plates 53 approximately rectangular in shape adj ustably secured to its exposed face by means nesavo r of screws 54 passing through verticalslots in said plates and threaded in the blocks 46. The vertical adjustment of these plates on the faces of the blocks 46 is accomplished by means of nuts 55 threaded on studs 56 which project from the bottom of the blocks 46, said'nuts engaging rearwardly projecting lugs 57 at the lower corners of the plates. Each plate 53 is guided in its vertical adjusting movements and is held against the thrust of the traveling work by having one of its side edges at its upper part bear against a guide pin 58 projecting from the block 46.

A flange 59 standing up from the face of the plate53 at one vertical edge thereof is undercut to form a guideway for the beveled stem portion of a T-shaped pressure bar 60 which is held in place therein by means of a rectangular frame 71 secured to the face of the plate 53 by means of screws 72. Besides the frame '71 forming with the flange 59 the guideway for the stem of the pressure bar, near its opposite edge it is provided with a vertical groove in its rear face into which slidingly fits a downwardly projecting guide lug 7 3 on the front end of the head of the pressure bar. The vertical groove in the back of the frame extends the full length thereof and the guide lug 7 3 only occupies the upper part, there being a push bar 74 occupying the remaining portion of the groove, together with a vertical flange 75 projecting from the face of the plate 53. V

76 which in turn is mortised at its other end 7 into the lower end of the stem portion of the pressure bar 60. A screw stud 77 projects downwardly from the bottom of the frame 71 through an opening in the spring bar 76 and has a heavy coil spring 78 thereon bearing at one end against a nut 79 on the stud and at the other end against spring bar 76 to give pressure to the pressure bar. By this arrangement the spring action is applied to the front end of the pressure bar as well as to the stem thereof by means of the spring bar 76 connecting directly with the latter and through the push bar 74 with the former. This spring bar 76 also limits the upward movement of the pressure bar by engaging the frame 71.

Set screws 80 are threaded through the inner wall of the groove of the frame and bear against the flange 75 of the plate, thus adjusting the frame with relation-to the flange 59 of the plate so as to produce a close working fit for the stem of the pressure bar.

Acpin 81 projecting from the plate 53 passes through a horizontal, elongated opening in the frame and serves to take the downward thrust of theframe due to. the pressure of the spring 78 as communicated to the frame by the stud 77. Thus, when the screws 72 are loosened to permit of an adjustment of the frame they do not have to resist the pressure of the spring, as the pin 81 relieves them of that duty.

Each pressure bar with its guide plate is capable of. angular adjustment by tightening the adjusting nuts to a greater extent on one side than on the other, thus varying the inclination of the upper surface of the pressure bar and causing it to depart more or less from a parallel relation with the bearing surface of the guide rails 23. The pressure bars may thus be positioned nearer to or farther from the guide rails to reduce or increase the size of the work feeding passageway and again be set at a desired angularity with relation thereto by the adjustment of the nuts 55, care being taken to retain the frame in bearing contact with the guide pin 58 in all adjustments thereof in order that said pin may take the thrust due to the frictional engagement of the traveling work with the pressure bar.

It is preferred, howeveigvto have all pressure bars so adjusted as to be slightly inclined away from the flaring mouth of the work feeding passageway 'so as to be depressed to the greatest extent when the strip of work is first brought to bear thereon, and gradually rising under the action of the springs 7 8 as the work travels over them.

The end matching is usually done upon strips of flooring '01 the like which have previously had a tongue out on one edge and a groove cut on the other edge thereof, and such strips are placed by hand in the flaring throat leading to the work feeding passageway as formed between the ends of the guide rails 28 and inclined guide blocks 82 which are adjustably bolted to flanges 83 projecting from the front ends of the blocks 46. When a strip of work is placed in position to be fed through the work feeding 1a?- sageway it engages and moves a yielding trigger 61 which is mounted in one of the guide blocks 82 and carries a'crank 83 for operating a clutch. The crank 83 is connectedby a rod 84 with a lever 85 which is connected by a rod 86 with a clutch lever 87 which normally holds the spring pressed pin releasing lever 88 of the clutch 21 in position for releasing the clutch pin. hen the trigger 61 is moved by the introduction of the. work to the work feeding passageway the lever 87 is released from its engagement with the pin-releasing lever 88, permitting its spring 89 to withdraw it from the groove of the clutch so that the clutch pin may spring into its clutch e11- gagement and start thefeeding mechanism in operation.

The inclination of the top bearing surfaces of the pressure bars is preferred for various reason; In the first place, the work feeding passageway is thus contracted to such an extent at the point of entering the work that the work may be squared or positioned at right angles to the line of feed by abutting it against the beveled front ends of the pressure bars. urthermore the work is fed through the machine with its tongue edge foremost, and owing to the va rying size and shape of the work, the range, i

of movement of the pressure bars, and the degree of pressure with which they are held against the work there would be a tendency to crush the grooved edge of the work as the work leaves the pressure bars but the inclination thereof overcomes this tendency by reducing the range of movement remaining after the pressure bar has moved upwardly with the forward travel of the work. With only a very limited range of upward movement remaining for the pressure bar at the time that the work leaves it, such tendency to crush the groove of the work is minimized, and still the pressure bar is capable of applying sufficient pressure to the work to hold it firmly against the head block during its travel past the cutters. This is so whether the work is larger or smaller than the run of work for which the inurhino is set at the time.

To increase the effectiveness of the pressure bars in guiding the work in its travel some of them are provided with knife edge inserts or hardened ground guide ails 90 let into grooves along their upper surface. These knife edges besides having their upper edges beveled to form the single-line contact bearing for the work have their front ends so shaped as to facilitate their forming or followingthe grooves that are produced in the bottom of the work. Of the two pressure bars next to the cutters; the first is preferably without a knife edge, while the second is provided with a knife edge with its front end inclined and beveled to press its way into the bottom of the work v and form the groove therein. Of the two pressure bars distant. from the cutters the" first has the front end of its knife edge drawn to a sharp vertical cutting edge by beveling its sidesso that it serves to gouge or plow its way through the bottom surface of the work, forming a groove by forcing the fibers to either side instead of merely indenting the groove as with the knife edge of the other set of pressure bars, and the knife edge of the second pressure bar is similarly formed at its front end so that it will follow in the same groove that is pro- 1gluced by the knife edge of the first pressure All of the pressure bars have their front ends beveled in order that the advancing work will force them downwardly against the action of their springs, and while the 7 bar before engaging. with the knife edge.

The tongues and grooves of flooring strips should be uniformly spaced from the face thereof and should be truly parallel therewith, and in order to accomplish this it is of great importance that the work should be held with its face firmly bearing against the guide surface of the head block for the full width of the work. The work is not always the same thickness from edge to edge 7 but 1S sometimes slightly wedge-shaped with one edge thicker than the other, and in such cases it is important that the pressure bars should be so designed as to cooperate with the work feeding hook bars and position the work with its face flat against the guide surface of the head block. When so held the grooves cut or pressed in the bottom of the.

work by the knife ed e of the rear pressure bar next to the cutters will be of such varying depth with respect to the bottom of the work as to make them parallel with the face of the work.

A strip with a narrow edge foremost, as shown in Fig. 9, will have such edge pressed upwardly by the inclined ends of th. pressure bars until its face bears against the head block and will be carried forward. with a straight line movement by the hook of thework feeding member engaging its upper rear edge.

A strip with its front edge wider than its rear edge, as shown in Figs. 6 and 7, will be lifted by the pull of the work feeding hook bars by reason of the engagement thereof being at the rear upper edge of the work, for when the lower front edge of the work engages the inclined portion of the pressure bars the pulling action of the work feeding members will tend to turn the work until its face fits the bearing surface of the head block, the edge of the work sliding on the hook, or the hook lifting slightly for this purpose. The friction of the work against the pressure bar will tend to retard the front edge of the work and thus retain the work in this position during its travel.

The grooves having been originally pressed. in the bottom of the work at such a depth as to be parallel with the face of the work, the work will remain. in its flat bearing eugagement with the head block throughout its travel through the work feeding passageway, and its line of travel will be perfectly straight as it is guided by said knife edges.

It is not to be understood that the'knife edges alone. engage with the work with the pressure bars distant from the cutters, for the knife edges only extend slightly above the surface of the pressure bars, and being embedded in the grooves cut in the work the face of the pressure barat either side of the knife edge bears directly on the work.

The knife edges extend above the surface of the pressure bars the same distance from end to end thereof with the exception of the knife edge on the rear pressure bar next to the cutter heads, and here the knife edge'is tapered in height so that its bearing edge will lie parallel with the bearing surface of the head block, or even incline toward it at the rear end, although the bearing surface of the pressure bar isinclined the other way. This is to insure a firm grasp on the work as it passes the tongue groove cutting cutter heads, and thus prevent the work from departing from its straight-line travel until it has passed off of the pressure bars. The knife edges on the pressure bars distant from the cutter heads out their way into the work to firmly hold the work against back-- ing away endwise from the action of the cutter heads.

A machine of this character frequently receives strips which are warped or twisted or bent downwardly or upwardly at their forced to take, the predetermined curvature 7 that is given to all strips in their passage n) through the machine, thus enabling the matching to be uniformly done and assuring the accurate placing of the tongues and grooves at the ends of the strips with respect to the face of the strips so that the abutting strips will be in the same plane when the flooring is laid.

For this purpose a fixed runner 91 is secured to the head. block and projects downwardly through. an opening in the o 29 with its lower edge bearing on the work midway between the two guide rails 28 and at a somewhat lower plane sa that thewcrk is bent thereby to a predetermined curva ture whether it is already curved in the same direction to a lesser degree, or whether it is curved in the opposite direction or is straight, when it enters the work feeding passageway. The runner 91 is so positioned that it performs this bending operation on the work before the latter reaches the knife edge on the pressure bar next the cutters.

In operation the strips of lumber, such as side matched flooring are fed successively to the throat of the work feeding passageway and against the trigger 61 to release the clutch which starts the driving mechanism in a cycle of operation, in which the lever 22 is oscillated back and forth, starting and stopping in the position shown in Fig. 1. At the beginning of the feeding stroke the work feeding hook bars 30 are lowered into the work feeding passageway where the hooks on their ends engage the strip which released the trigger and carry it over the first set of pressure bars by which it is guided in the manner described in its travel past the cut-off saw 26. The strip in this cycle of operation is carried into engagement with the second set of pressure bars and there left until another cycle of operation is produced by entering another strip, when the first strip is engaged by the second set of hooks of the work feeding hook bars and carried over the second set of pressure bars past the cutter heads '27 which .cut the tongue or groove therein. This cycle of operation carries the first strip out of the work feeding passageway and deposits it on a suitable conveyer 92 which removes it from the machine.

The pressure bars may be adjusted toward or away from the head block or may be adjusted to the desired incline by turning the nuts 55, and the degree of pressure thereof may be varied by adjusting the nuts 79. Should a strip of work become lodged in the machine for any reason the work feeding passageway may be opened up immediately to permit of its removal, it being only necessary to loosen the nuts 47 and to turn oneor both of the cam rods 48 to lower the blocks 46, and as soon as the obstruction is removed the parts may be restored to their former positions without disturbing their nice adjustments.

The features of constructionof this invention are such as tofacilitate rapid work and at the same time insure accuracy even under the most unfavorable conditions as to the distorted shape of the work before it enters the machine, and are such as to permit the removal of work which may have blocked the machine, without disturbing adjustments.

Another and a most important advantage for the features of construction included in this invention is that in its travel through the machine the work is subjected to such pressure between guides of such a construction that its path of travel is accurately de termined so that the operation thereon will be true and uniform, and this without the danger of crushing the groove as the strips leave the pressure bars. The object -'in starting the knife edge of the second pressure bar next to the cutter heads at a considerable distance behind the front beveled end of the pressure bar is to permit the widest strip for which the machine is designed to lie wholly upon the face of such pressure bar before engaging the knife edge, thusassuring this pressure bar remaining in a fixed position throughout the travel of the work over its knife edge, with the result that the groove formed thereby will be parallel with the bearing surface of the head block, and the tongue or groove will therefore be parallel with the face of the strip, it being impossible for the pressure bar to rise further after the knife edge begins to cut the groove, because of the knife edge being parallel with the bearing surface of the head block. If the knife edge of this pressure bar should begin near the front end of the pressure bar so as to start the formation of the groove before the work was entirely upon the pressure bar the rear portion of the work, if of greater thickness than the front portion, would cause the pressure bar to move after the groove has been started and therefore disturb the parallel relation of the groove with the face of the work, and consequently the tongue or groove cut in the end of the strip would not be parallel with the face of the strip.

What I claim as new and desire to secure by Letters Patent is:

1. In a wood working machine, the combination of a head block, a member having a fixed position with relation to the head block, means for moving said member out of said fixed position, and a spring pressed presser bar angular-1y adjustable on the said member forming a work feeding passageway between its face and the head block.

2. In a woodworking machine, a head block, a member mounted on jacks, and

spring pressed presser bars angularly adjustable on the said member and havinga straight line movement and forming a work feeding passageway between their faces and the head block.

3. In a wood working machine, a head block, a stationary knee therebeneath having an upstanding web portion, blocks bolted to the web portion and capable of move ment with relation to the head block, means for moving the blocks, and spring pressed presser bars carried by the blocks with a work feeding passageway between their faces and the head block. I

4. In a woodworking machine, a head block, a knee therebeneath provided with an upstanding portion, clamping bolts passing through the upstanding portion of the knee and prevented from turning therein though capable of longitudinal movement, blocks clamped on the opposite sides of the upstanding portion of the knee by means of said clamping bolts, means for raising and lowering each block independently when the clamping bolts are loose, and spring pressed presser bars carried by the blocks with a work feeding passageway formed between their faces and the head block.

5. In a woodworking machine, a head block, a knee therebeneath having an up standing portion, blocks releasably clamped to the opposite sides of the upstanding portion of the knee, presser bars carried by the blocks with a work feeding passageway formed between their faces and the head block, cam shafts passing through the blocks, jack pins slidably mounted in the blocks hearing against the cams of the shafts and against the knee, and means for turnmg the shafts.

6. In a woodworking machine, a head block, a support, a projection on the sup port, a plate clamped to the support and engaging the projection, means for adjusting the plate on the support for varying its angularity with relation to the head block, and a presser bar slidably mounted in the plate with a work feeding passageway between its face and the head block. 7. In a woodworking machine, a head block, a support, a pin projecting from the support, a plate clamped to the support and bearing against the pin, adjusting screws projecting from the support and passing through the plate for moving the plate toward or away from the head block for varying its angularity with relation thereto, and a presser bar slidably mounted in the plate with a work feeding passageway formed between its face and the head block.

8. In a woodworking machine, a head block, an adjustable plate provided with an undercut flange and a second flange parallel thereto, a frame clamped to the plate and forming a gib with the undercut flange, a presser bar slidably mounted in said gib, said frame having a groove to receive the other flange, set screws threaded in the frame and engaging said other flange for adjusting the position of the frame, a projection on the presser bar fitting in said groove, a push bar passing through said groove and engaging the projection, a spring har engaging the push bar and the presser bar, a stud projecting from the frame and passing through an opening in the spring bar, a nut threaded on the stud, and a spring confined on the stud between the nut and the spring bar, there being a work feeding passageway formed between the face of the presser bar and the head block.

9. In a woodworking machine, a head block, a support, a plate clamped to the support and provided with an undercut flange and a second flange parallel therewith, a frame clamped to the plate and forming a gib with the undercut flange, a presser bar slidably mounted in the gib, said frame having a groove to receive the second flange of the plate, set screws in the frame engaging the second flange for adjusting the frame on the plate, a push rod passing through the groove and engaging the presser bar, a spring bar connecting the push bar with the presser bar, a stud projecting from the frame and passing throughan opening in the spring bar, a nut threaded on the stud, a spring surrounding the stud and bearing on the nut and the spring bar respectively, and a pin projecting from the plate and fitting in an opening in the frame in line with the stud to take the thrust of the spring when the frame is unclamped from the plate. I

10. In a machine for end matching flooring, a pair of parallel clamping pressure guides, a cutter in the path of the'workin its travel through the pressure guides, and a deflector between the pressure guides and in the path of the work in'its travel therethrough for bending the work to a predetermined degree.

11. In a machine for end matching flooring, a stationary head block, spring pressed presser bars cotiperating therewith to form between them pair of spaced pressure guides, means for forcing the work through said pressure guides, a cutter in the path of the work in its travel through the pressure guides, and a fixed runner between the pressure guides with its bearing surface project-V in" into the path of'the work for giving a predetermined deflection to the end of the work.

12. In an end matcher, a head block, a spring pressed presser bar cooperating therewith to form a pressure guide through which the work may pass, means for feeding the work through the pressure guide, a cutter in the path of the work in its travel through the pressure guide, said presser bar having its bearing face inclined with relation to the bearing face of the head lolock.

13. In an end matcher, ahead block, a spring pressed presser war cooperating therewith to form a pressure guide through which the work may pass, means for feed ing the work through the pressure guide, a cutter in the path of the work in its travel through the pressure guide, said presser bar having its bearing face inclined with relation to the bearing face of the head block and receding from the head block toward the discharge end thereof,

Q14. In an end matcher, a headjblock, a spring pressed presser har cooperating therewith to form a pressure guide through 'which the work may pass, means for feeding the work through the pressure guide, a cutter in the path of the work in its travel through the pressure guide, a stop for limiting the movement of the presser bar toward the head block, said presser bar having its bearing surface inclined to recede from the bearing face of the head block toward the discharge end thereof whereby the range of increment of the presser bar is reduced as the work approaches the discharge end thereof.

15. In an end matcher, a head block, a spring pressed presser bar cooperating therewith to form a pressure guide between th .21, means for forcing work through the pressure guide, a cutter in the path of the work in its travel through the pressure guide, and means for adjusting the angularity of the presser bar with relation to the head block.

16. In a woodworking machine, a head block, a pair of pressure bars cooperating with the head block to form a work feeding passageway therebetween, a cutter in the path of the work through the work feeding passageway, knife edges on the bearing faces of the pressure bars adapted to score the work in its passage through the work feeding passageway, said knife edges being in alinement with each other and having pointed front ends, the first to cut a score line in the work and the second to follow said score line whereby the knife edges hold the work in a predetermined position with relation to the cutter in its travel past the cutter.

17. In a woodworking machine, a head block, a pair of sets of pressure bars, the pressure bars of the two sets being parallel with each other and cooperating with the head block to form a work feeding passageway therebetween, a cutter in the path of the work through the work feeding passageway, knife edges on the bearing faces of the pressure bars distant from the cutter and on the bearing face of the rear pressure bar near the cutter adapted to score the work in its passage through the work feedin passageway, said knife edges hav ing pointed front ends, the first of the distant pressure bars to cut a score line whereby the knife edges hold the work in a predetermined position with relation to the cutter in its travel past the cutter, the pointed front ends of the knife edge nearest the cutter being inclined to impress the score line in the work, and the pointed front'ends of the other knife edges having a chisel edge to cut the score line in the work.

18. In a woodworking machine, a head block, a pressure bar cooperating with the head block to form a work feeding passageway therebetween, a cutter in the path of the work through the work feeding passageway, a knife edge on the bearing face of the block, a pressure bar cooperating with the head block to form a work feeding passageway therebetween, a cutter in the path of the work through the work feeding passageway, a knife edge on the bearing face of the pressure bar adapted to score the work in its passage through the work feeding passageway, said knife edge having its front end distant from the front end of the pressure bar to permit the pressure bar to receive the work before the work is engaged by the knife edge, the bearing surface of the pressure bar being inclined with relation to the bearing surface of the head block so as to recede therefrom toward the discharge end of the work feeding passageway, and the knife edge having its bearing surface approximately parallel with the bearing surface of the head block to form and occupy a groove in the work parallel with the face of the work.

20. In an end matcher a head block, a pressure bar cooperating therewith to form a pressure guide through. which the work may pass, means for feeding the work through the pressure guide, a cutter in the path of the work in its travel through the pressure guide, the bearing surface of the pressure bar being inclined with relation to the bearing surface of the head block so as to recede therefrom toward the discharge end of the pressure guide, and a knife edge on the bearing face of the pressure bar with its bearing surface approximately parallel with the bearing surface of the head block.

21. In an end matcher a head block, a pressure bar cooperating therewith to form a pressure guide through which the work may pass, means for feeding the work through the-pressure guide, and a cutter in the path of the work in its travel through the pressure guide, the bearing surface of the pressure bar being inclined its full length with relation to the bearing surface of the headblock so as to recede therefrom toward the discharge end of the pressure guide.

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

R. S. C. CALDWELL, KATHERINE HOLT.

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