US 1572247 A
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Feb. s 192e. 1,572,247A
B. C. ROCKWELL METHOD 0F MANUFACTURING VENEEREDLUMBER Filed Jan. 50, 1924 a l l //6 lkw/Zier da wif z Patented Feb. 9, 1926.
UNITED STATES PATENT OFFICE.
BYRI) C. ROCKWELL, OF SCE'.y JOSEPH, MSSOURI.
METHOD OF MANUFACTURING VENEERED LUMBER.
Application filed January 30, 1924. Serial No. 689,508.
To all whom t mayconceff'n' Be it known thatI, BYRD C. RooiwELL, a citizen of the United States, iesiding at St. Joseph, Missouri, have invented a cer-v v tain new and useful Improvement Methods of Manufacturing Veneeied Lumber, of which the following is a specification, suoli as will enable others skilled in cost and have the appearance of the more' expensive door jainbs made of solid high grade lumber, and to provide a method of manufacturing said door jambs, method can be easily practiced and is highly ,eiiicient v Further objects of the invention are to provide a method of manufacturing veneeied lumber wherein to a core or body portion of low grade lumber are applied veneer sections Vof high grade lumber and the whole is then properly linished or dressed so as to leave clear veneer edge portions and a .finished veneer face portion or portions. f
Still further objects of the invention are to provide an improved method of manufac` turing veneered lumber consisting in form ing grooves in the face and edges ot a core or body portion of low grade lumber, in-
serting in said grooves veneer strips of high` grade material, one of the walls of each.
groove being formed beveled whereby the glue face of the veneer strip is wedged and held under pressure against the glue wall of` the groove, applying a veneer face section to the face portion of said core body, and then dressing the composite lumber so as io'finish and leave exposedsaid veneerl edge strips and said face veneer portion.
lVith these and other objects in view, my invention consists in certain novel features of construction and arrangement of parts, hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which- Figure 1 is aperspective detail View of a which y core or body portion of low grade material with the grooves formed longitudinally in the tace and edges thereof. j
Figure 2 is a cross section showing the veneer edge strips glued in position in said Grooves. i3 n ligureo is a similar view showing the door stop face veneer section secured in..
Figure 4 shows the core body channeled or rabbeted at its edges and the door stop veneer edge strips and veneer face section dressed.
Figure 5 is a cross section througlithe completed door jamb and showing the veneer face sections applied to the rabbeted portions of the core body.
Figure 6 is aV detail view of a modified form ofdoor jamb. j
Figure 7 is a perspective detail View showing Ahow the edge veneer strips are made.
Figure. 8 is atletail View showing a modiv fied method 'of securing the edge veneer strips in position.
The present invention relates particularly to the manufacture of door jainbs and it is the .purpose of the invention toprovide a method whereby door jambs Ycan be manufactured out of'stock `of inferiorgradc of lumber and have their face portions andthe exposed portions of their edges linislied with veneer material of high grade lumber.y
Referring by numerals 'to Vthe accompany? ing drawings. lOindicates a body or core section of the door jambs formed of sound lumber of inferior grade. The face and edges of this core section are provided with grooves ll and l2, respectively, which are longitudinally formed therein. Grooves l1 are spaced a suitable distance from the edges la of the core section and their outer walls are formed .sloping inwaidlyand downwardly as indicated at lla. Grooves l2 are spaced a suitable distance inwardly from the face of the core section andtheir walls remote from said face are formed sloping inwardly as indicated atlZa.
Veneer edge strips l5 are placed in grooves ll and are secured therein by a suitable adhesive applied to the straight or inner sides ofY said strips and to the inner walls of said grooves as indicated at A. These strips are preferably formed wedgesha-ped having'v inclined sides a Which are designed vto co-' opeiate with the sloping Walls 11a of grooves 11. Thus when the vstrips are placed in their respective grooves the Wedgingco-actionfof i the inclined Walls 11L and sides 15a forces under pressure the glue faces of the strips in close contact With'theglue VWalls `ofthe grooves, thereby forming la secureandneat joint. m
In a similar manner veneer edge strips 16 are secured in positions in grooves 12 forined in the edges 1li but in this case the glue is applied to .tliesloping faces 1G of strips 1G and the inclined Walls of grooves `12v as indicated at A door stop face veneervsectioiilf( is new applied `by a suitable adhesive to the face oit core section n `10, `said vface veneer: section extending between vthestrips 15 .and having its side. edges terminating flush with the outer edges of said strips as indicated in Figure 8. .The remaining portions 10a of the facey of said core member.. are now removed channeling or rabbeting as indicated in dotted linesin Fig- .ure3. The .depth of ,thesechannels is arranged so. .as .to remove sii'fcient material y from the edges .of said core body so as to form a door rstop .10b` and expose the unglued facesofedge strips 16 as yshown in Figure 4. In width thechannels A.extend inwardly a suicient distance to pei'initfthe dressing or finishingof .the unglued inclined faces of the face strips 15 and of the edges :ofthe .face veneersection 17 ias shown in Figure a.
Thus the door stop portion 10b is provided.
on its face with a face veneer section 17 While lthe .edges,..ofsad door Vstop portion. have se- .n .cu-red. thereto thedressed yportions oflfface stripsln.
In nbbeting .the core body l0, undercut .grooves 18-are formed below face strips LThese'[grooves lextend inwardly and are slightly inclined downwardly andv serve to vreceive.;the inner edges. of the iainb face veneer .sections .19- Which, are glued to the( faces tif-.the rabbeted portions as shown in Figure '5 and 4haye their outer edges over lying theedge stripslt and terminate flush Lwith the outer face thereof. These outer faces, Yas well as the outer edges of said vejneer sections y19, are then dressed and in .ished in proper l manner.
Finishing strips20 may now be` applied to .the edges of the `core section so as to cover .the exposed portions ofY said core member,r
the edges .andfside finishing strips adjoining ,the outii'ardlyt presented faces of edge strips Y 16 las shown inFigure 5.v
Inl Figure 6 the door iainb Vis. shown with-` out thedoor stop portion. The core member .21 is V.provided Witlngrooves in its edges .adiacenttoiits face,l in ,which ,grooves are `se cured .edge strips 2.4.v A face veneer strip 25.
v`is then iapplied to-tlie face of said ycore meinber and vfinishing strips 26 are secured to the4 stead ofivbeing formed Wedge-shape in cross `section are formed rectangular and are securedin'positiou in the grooves of the core member l() bynieansof reiiioi'able Wedges 29. Y This modified method is particularly d ltble Where it is desired to avoidiraste inc Vdental .to dressing the veneer strips and the faceportion of the core inen'ibc-r.v
l. The method `ofmanufacturing veneei'ed.
lumber consisting of forminglongitudinally disposed gi'ooif'es in a core body wof, loiv ygrade lumber, gluing finishing veneer strips inf said grooves to forni .the exposed edges of :the veneered lumber,V and applying a face `veneersection :tothe'face .of said core body ivithitlieside edges of saidface veneer sectioniiush with ythe (interfaces of said veneer strips. i
2. The method rof inanufacturing veneered lumber consisting inY for-ming longitudinal grooves in a core section ofloiv grade lumber, securing :thereinveneer strips Aoffin-ishing v,material, securingY v,a ijeneer `face portion to the face of said core'K body ivit-h theedges of said faceveneersection adjoining said veneer. strips.
3. The, method of manufacturing veneered.
lumber ,consisting ,ing forming longitudinal grooves in acore section-.of low gradeliimbei', securing therein veneer. strips .of finishingfinaterial, securinga veneer face vpor- .tio'n to the faceof saidl core body with the.
edges of said face veneervseletion-adjoining said veneer strips, and dressing tlie.veiie er portions of the fiinisliedluinber,
i4. 4'lf-"he inetliodof manufacturing veneered lumber Vconsisting informing longitudinally .disposedgrooves in the Walls `of a core ineinber, securing il'eneer-stripsof finishing luiiiber iii said; grooves,V applying a face .Veneer section of finishingluniber tti-said core body,
the .edgesf said face veneer section being arranged vadjacent to the outer faces of said veneer strips, y. y
The `niet-liod'of manufacturing venecied lumber consisting in forming longitudinal. grooves in `the face and the'edges of a .core body of inferior Alumber,l applying veneer strips of finishing--luniberrinysaid grooves,
rabbetingthe sides of said core-bodyf said `rabbeted portions Y being.. cofextensive With the `.veneerstrips arranged in the face vand vfsidesmoffsaid core body andfapplying -face veneer fsectioiisfto isaid core body, the @dees 'of said face Veneerf sectio iis `oi'f'erlying -tlie edgesof the respective veneerstrips `rabbeted portions of said core body.
'1. The method oi' manufacturing veneered lumber consisting in forming longitudinal grooves in the face and the edges of a core body, each of said grooves having an inwardly inclined Wall, gluing veneer edge strips in said grooves, said strips being placed under pressure during' the gluing process by virtue of the inclined Walls or' said grooves, and applying a face veneer section to the face of said core body.
8. The. method of manufacturing veneered lumber consisting in forming longitudinal grooves in the face and edges of a core body of lou1 grade lumber, securing veneer edge strips in said grooves, applying a face veneer section to a portion of the face of said core body, said veneer section being co-eXtensive with the veneer strips arranged in the face of said core body, rabbeting the remaining face portions of said core body, said rabbeted portions extending adjacent to said veneer strips, and applying faceveneer sections to the faces of the rabbeted portions of said core body, there being undercut grooves Jfoi-ined in said core body to receive the inner edges of the last mentioned face veneer sections.
In testimony whereof I hereunto affix my signature this 21st day of January, 1924.
vBYRD C. ROCKWELL.