US1772726A

US1772726A - Veneer-cutting machine

Info

Publication number: US1772726A
Application number: US244007A
Authority: US
Inventors: Joseph T Mengel
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-12-31
Filing date: 1927-12-31
Publication date: 1930-08-12
Anticipated expiration: 1947-08-12

Description

v Aug. 12, 1930. MEN 'E 1,772,726

VENEERCUITING 11110111115 Filed Dec. 31. 1927 2 Sheets-Sheet 1 "vi Mon v M16214:

Aug. 12, 1930.

J. T. MENGEL VENEER CUTTING IAQHINB Filed Dec. :51, 1927 2 Shoots-Swot I I INVENTORQ ATTORNEY from a straight line being sufficient to cause Patented Aug. 12,

" i 3 GER HQiiiiI QL T -I NESS F I fvniinnaeu'mme r 7 Application filed December 31,1927. semi-no. 244,007.

a This invention relates to machines: for cutting veneer from logs or.b1ocks or sections of wood, themachine comprising a knife which is adapted to cut from the face of the wood a thin sheet orlayer of wood while the piece of'wood and ithe knife are movedjrelative toaeh other, the knife bear ing onthe surface "of the W0Od., i

The object of this invention is to produce a machine which is adapted to cut the wood along a sinuous or wavy line, the variations parts of the cutting to be in orthrough one fiber layer. of the wood while other portions of the cutting are in another layer or layers of the wood fiber, such cutting resultingin a veneer sheet which .1s corrugated or, wavy or sinuous zin transverse section and wh ch has a greater variety of surface appearance;

thanis possessed by the surface of a veneer sheet cut by means of a knife having itscutting edge in a straight line. Furthermore, the veneer sheet cut by a knife having the sinuous cutting edge cuts through the wood fiber at different angles. Thereby idifierent parts of the face of the veneersheet absorb in different proportions or! quantities oils,

. stains,'shellacs, and varnishesand other mas b rials used for g-the aceof the,

veneer sheet. This variationiin absorption is another factor in giving'to the veneer sheet a Variety'of appearance.

My invention" relateslparticularly to the form of the knife andithe formof the pres i sure bar which cooperate in the" cutting the discharge of the' veneeig; 7

In the accompanyingdrawings, I

Fig. 1 illustrates a c1. ss cutting machine or latheembodyingmyim provement; i

' the knife and a part of the pressureibar positioned in relation to each other, 1 v Fig. 3. is a perspective View of a partfof the' knife showing the sinuous cutting edge;

' ,7 Fig. 4 is an upright section on the line,

44., of Fig. 3, looking'in the directionfof the arrow; 7 p 1 7 Fig. 5 is a similar sectlonron'the hne, .5 5, I

of Fig-3, looking in the direction 'of the arrow, I135 Fig. .6 is a horizontalsec-tion-on the line, 6.fi,.of Fig-5; a:

Fig. 7lillustrates one face ofa part ofa veneer sheet cut by my improved maChineL 1 Machines for cutting veneer by means of a knife and a pressure bar are wellknown in this art. Hence it is considered-unneces- V sary to fully illustrate and describe such flap-Q machine. 7 r

Fig. 11 is atr'ansverse upright section of such a machineadapted to cutting-a veneer sheetfrom a log, the logbeing rotated,asis now done in similar machines and the*Cl1t-:1 tingknife and the pressurexbfar being statlOnitlY. r

In the drawings, A is a lower-, horizontal, stationary frame member, and C is an upper, horizontal stationary Y frame member. I The girl" frame member, A, supports the knife andith'e frame member, C, supports the pressure bar.

Thesetwo frame members have their-ends immovably supported by the ends of the gem:

eral'structure ofthe niachine,as' is already f On 'saidifaceis a lug or bracket, A integral ":with the -member,iA.: The cutting knife, Byis go j placed against said plane face above'the lug,

A 1 Any desired numberof lugsfA areto be placed on the flange, A below thekn'ife.

A bolt, AF, is: threaded upward through i the "lug, A :andfrnade to bear against the lower 855 edge iof. the knife. "Byl' turning said boltfso V as to varyits"height,;the height ofthefiknife through a, slot, B (Fig; 2) "and is threaded into the i frame memberfA. "A nut,'iA*," sur- .330

Fig 2 is a perspectigelshowinga a lrounds the outer part of said boltandtii'sio be'driven toward the member, A,;for binding the knifeagainstsaid 'memberiwhenz the kiiife has been "adjusted to thedes1red heightt=b means of thebolt', A Any number of-su 3.5

bolts, A and slots, B*, are tojlbe u'sed. 1 e

fl g anilippergfler F300 extends upward and toward the right so as to stand in a plane which forms an acute angle with the plane of the flan e, C The 7 frame member, 0, is so positione as to bring I f the intersection of those planes close to the edge of the cutting knife, B. At the junction ofihosevthe membenfl is chan-fi :eledb flint W to receive the pressure downward-directed face, C and extending u is cut away far enough to receive the clamp- G; cutting away to make'noom ior'this late, a shoulder, C is formed on A n, whieheonetitutee ian, abutment for the a jacent edge of the clamping c fiaidjilate overlaps a part ofthe presi r a Since the pressure bar extends belowthe adiace'nt face of the mem Ln, fie'owerlapping part of the clamping the pressure bar and not face of the member, C. Adjacent theshonliz-67 5116 M M 'ng plate-bears against said I A b812,: extends obliquely upward clamping plate and the adjacent at the frame member, C, and serves to plate against the pressure we knife, B. new and; just billin is to be again made tight.

. of the knife, B, which. rests 1. {ace of the framemem- M A ds 'in a u no '"which slightl -cut'sthe lh'lwflieh'is close to the wailing-edge B, is beveled-so as to red; near the I permi -the faced the log, L.

cutting of m nia, B, were the w e ofithe adjaoentafaoe 7 r,'.A, or parallel toor matjflanalhhe knife would but a straight am (from the rotating log; and

dumb; would benpproximately parallel f) Q)!! hyets in the log, and theveneer would befldt and not sinuous or wavy.

' n. '2 4915, show the form of knit: whereby the knifeis-adaptu duo-m new sheet in wavy or sinuous in $1 in fiber layers. l

. hmthis outting lmi'fe,a steel plate of a propritwe thickness and "length and disused. For the* purpose of ezrplana- QM, i is med thatthe upper edge of D, said bar resting against a horizontal downward a little the adiacent partof the lower face of the member, C. \From.

the pressure bar toward the free edge of the flange, C, thelower iaoe ofthemember,

cutting main an the plane of the up I from which the knife 15 formed, 'sairl ad'peentpart of .the adjacent v .i r and madeto bear against the the; Weber. The opposite side of 1m ,flfflm aesuoh ententas may he necessary when the the plate is straight and flat and in a lane whichis perpendicular to the body 0 said plate. i

In Figs. 3, 4 and 5, the beveled face of the cutting knife is shown turned toward the "right. In Fig. 2, it is shown toward the iront or. left. To illustrate the manner of de wlopingahe sinuous or wavy cutting adge, let

it he assumed that alternate portions of the part ofthat face are made slanting totheopposite face of the knife a disward tance equalling the distance at which parts of the cutting edge, 13, are to stand from theplane of the straight face of the knife. And let it be assumed that the beveled face of theoattingknife lissimila'rly outon :s'eotionsalternating the cat sections of the oeite .faoe ofthe knife, this cutting on a tel-ed fice being only enough to fformn redge olflthe lane being perpendiculartoithe body ofthe 5 Whose cuttingsat each eideof the knifieare *to been curved as to make the cutting edge sinuous orwave form, the deviation from n straight line being only asmnch as will'cause such tlifierence in depth voi cutting into the surface as will present on the veneer sunfaoe the desired fiberi variation.

1 fl he function of the pressure bar, D, press upon and to mmeclegree condense the :logrsurfiace immediately above the cutting iodgeof the knife, B. The approximately "u night or side iface oi thepressure bar is ma .wavy *to conform to the waves orsinuousities the uprightface of the knife, B, inorder that the gap or passage between the pressure bar and the cadzting edge of the knife .may be heiferand in order that the pressure by flnepmssnre bar upon the wood. may be approximately uniform on all parts of the sbeet wpassing firomrthelog. In other word-s, the

which is sure bar is to present an edge pamlzlelstn 'the sinuous lknife edge. a

To attain that parallelism, 1thelovwerfaee ssune bar is also to he made sinuous are baris'in a plane which iisut an mgie of less than ninetyedegneesto the {dune of edge, the metal being allowed rte re- 1 llii the adjacent face of the cutting knifie, B.

Thecmtingedgewof. the knife being ina lnori- .zmital plane, andthe pressure bar being in clined, as above described, the abovementioned arallelismgcan be attained only by also we ing the lower face of the press me bar sinuous,

But the planeof the knife edge and the inl'inationof the pressure bar may sore- 1mm to each other as to allow making only the, upright face of the pressure bar smnous to create the parallelism above described;

It is to be notedthat as soon as a cnt ass 'eeemmaaaeme the iegjthe log wiflhave 2 other, and means for "supporting abody of a sinuous surface conforming to the sinuosities of the pressure bar. Then all parts pressure baredge will bear on the. I

- bination of a flat-faced knife body havinga t to the knife body, a pressure bar in a plane forming an angleless than ninety degrees to of the wood. g

The veneer sheet, V, issuing from the edges of the knife, B, and the pressure bar, moves" away between the upper frame member, C,

and the lower frame member,A. Said sheetL may descend from the positionshown in Fig.

1 and slide on any. number of supports, A7, seated on the outeredge, AF, of'the frame member, A.

I claim as my invention I 1. In a veneer cutting machine, the combmation of a knife having a'sinuous cutting 1 edge, a pressure bar having a sinuous edge conforming to the cutting edge of theknife, means for supporting the knife and the pressure'bar in relation to each other, and means for supporting abody of wood, said means and the knife and pressure bar supporting means being adapted to impart relative movement. 7

2. In a veneer cutting machine, the combination of a knife having a sinuous cutting edge, a pressure bar having two sinuous faces forming an edge parallel to said cutting edge of the knife, means for supportingthe knife and the pressure bar in relationto each wood, said means and the knife andpressure bar supporting means being adapted'to impart relative movement. a

3. In a veneer cutting-machinm-the combination of a flat-faced knife body having a sinuous cutting edgeinga planeperpendicular I to the knife body, a pressure bar having a sinuous edge conforming'to the cutting edge of the knife, means forsupportingtheknifes and thepressure bar in relation to each other,

and means for supporting'a body of wood,

said means and the knife and pressure bar supporting means being adapted to impart relative'movement. v H V 4a In aveneer cutting machine, the combination of a fiat-facedknife body the upper part of which has its sides'grooved alternately to form a sinuous knife'edge, a pressure bar having a sinuous edge conforming to the cut-V ting edge of the knife, means for supporting the knife and the pressure bar in rela .tion to each other, and means for support pressure barsupporting means being adapted to impart relative movement. 6-. In a; veneer cutting machine, the comsinuous cuttingedge in a plane perpendicular bination of a knife having a sinuous cutting edge, extending to a plane transverse tothe knife andhaving an edge which is sinuous to conform to the sinuosities of the knife 8. In a veneer cutting machine,.the com- 'bination of a knife having a sinuous cutting edge extending to a plane transverse to the body of'theknife, and a pressure bar having an inolined'facedirected toward the position" for the Ilog and the lower part of said inclined face being near the cutting edge of the body of the knife, and a "pressure bar having an inclined face directed toward the position for the log and said pressure bar having a lower face meeting said inclined face near the cutting edge of the knife and said inclined face and said lower face being sinuous and forming a sinuous edge at their junction the sinuosities of which edge conform to the sinuosities of the cutting edge of the knife.

7 9. In a veneer cutting machine,the combination of a knife having a flat body and having a sinuous cutting edge in a plane approximately perpendicular to'the body of the info, a pressure bar having'a sinuous edge conforming tothe cutting edge of the knife,

means for supporting the knife and the pres sure bar in relation to each other, and means for supporting a body of Wood, said means and the knife and pressure bar supporting means being adapted to impart relative movement.

V In testimony whereof'I have signed my name, this 21st day of December, in the year one thousand nine hundred and twenty-seven.

JOSEPH T; MENGEL.

ing a body of wood, saidmeans and the knife 5. In a veneer cutting machine, the com.- bination of a flat-faced knife body the upper part of which has its sides grooved alternately to from a sinuous knife edge in a plane perpendicularto the knife body, a pressure bar'having a sinuous edge conforming to V the cutting edge of the knife, means forsupporting the knife and the pressure bar in relation to each other, andmeans for supporting a body of wood, said meansand the knife and