US2375447A

US2375447A - Scarfing device

Info

Publication number: US2375447A
Application number: US503923A
Authority: US
Inventors: Alexander H Stuart
Original assignee: JOHN WIDDICOMB Co
Current assignee: JOHN WIDDICOMB Co
Priority date: 1943-09-27
Filing date: 1943-09-27
Publication date: 1945-05-08
Anticipated expiration: 1962-05-08

Description

A. H STUART.

SCARFING -DEV-ICE May 8, 1945.

Filed Sept. 27, 1943 2 Sheets-Sheet 1 w r.. h U h I A. H. STUART SCARFING DEVICE May 1945.

2 Sheets-Sheet 2 Filed sept. 27, 1943 .cut onaboardor the; like. y

Patented May 8, 1945 as oifFl 'CE1 I "g;'37`5,447j t l v=1soliii'trriiuG nrw-reti1 ieander .r1.3 siluatjorana '.ltapi'ds, Mich.,j assignor-to John Wiidlcoml')v Company, Grand". 'Rapidi.Michgfaicorporation of Michigan I' Afppiieationseptember 27, i943, seriarNetoaem. i

" I0.Claim`s..

Thisf invention relates@ .to ai mechanism; for

The presentinventlonzisdirectedeto arelatively simple u but; very; practical and.l reflectivey attachment which maybe appliedttoxaibuzz planen-and with which the scarfingf'isifaccomplishedvrapidly andy the inclined: scarredn surfacesarei; true v and accurate asl they must-'be forf the; attaimnentf oi theproper quality'oiiuint .when-twoof the surfacesvv are' placed? together' anal-the alined boards glued atsuch surfaces. HeretoforescarngzsmachinesA for'the' purpose'fhave beeniexpensive; and

.capziizle'l of use: for vthe oneipurpose: only;y while withvmy invention aifplaneriot: therproper type may/have' the Iattachment:applied*atheretoiat rell ativelysmall expense;A and 'wmanufacturer will.

not be!y required to invest a.; relatively,y large amount ini-e scarngrmachireawhichiean be iused for no other: 'werke With 'myfihventlonf the at#- tachmentf may applied" 'toi at planerfor" the searng:4 operations;v "and rixay.-r then 1 be removed andizthe: planer used-fore its .regular :werkt-1.. The invention which I have made un.-v derstoodt'from thev followingy descriptionatakenin connection.. with.: tliexaccompa'nyingf: drawings,` rin whichy' L. I` .l

Fig;v 1 is:,a: planvviewfof the scarngfdeviceiof myinvention.

Fig; 2\ is a? longitudinal .verticali section .therethrough showing thescarngfdevice' locatedrover thefbed' ofr au planeri andiillustrating theiposltion of the parts at the completion oi theisearfmg Fig. 3 isf-a View' similarftovFig.; 2; showngfzthe position ofthefpartsfzbeforetherboard orftheylike has'beenioperated-upon. u' 4 Fig. 4- is f atransverse .iverticalase'ctiom substantiallyv oni the plane 4,-4- of- Fig. 3A looking f. inrthe directionindicated bythe arrowi t -f y Fig. v5 is van enlarged.- side elevationfoflglthe means `usedlforadjustinglthea device betweenfsuof `oessivetsearngcutsionftheworle,and; n FigiA 6 is .a iragmentaryfperspective view-illusliu- 1:27) v trative of the scarfl surface andV its-location with respectvto sidesof. the: member on-which it4 is produced; l t

Like reference. characters.xreier-toglike partsgm the d-i'iierehtig-u-resI of thedrawinge 'Theihorizontal tablet i with af-{s1mme-q2`r between sections/ofthe; table atfwhich the rotatingplaning cutter :iis locatedare'partsf aabuzzfplaner which are shownfto Jinciiexsite-.the-enviireisunent,nin whieh -`my inventiomis The scarng device of my invention.4 mountedy upon and Lliestv over theupper side oi said table and cutter;

y inthe. constructienfV of; theiscariingfdev-iee a frame: having spacedparallel sides 4 connected at one end by a cross member isflocatediover the tabled'. At the opposite endfofthe frameametal stirrupf 6i with `dewnwmehr` extending ears at i the;V ends'` thereofl extends,betweenand` cohnectedtofsaidside members-f4 oithe frame;` ySup-l piortingbars` are boltedor otherwise securedone at each-side ofthe planer table I extending there` beyond; at one I end and serving. las. supports` `for the'pivotal. mountingoithe frame; a rod ySl-.passinggthroughv the free end portions of thesuppor-t-l ingfba'rs v81v and;` the -ea-rs I of 1 thefstirrup. j It' will bei apparent from the -constructionidescribed ,that the frame may bey turned about the axis of the rodf!! isoA esto-be tilted at itsA opposite end greater or lesszdistances.- above thel table I of` the planer.

`Adjacent the barA 5 a horizontalshaft i0 extends between and passes through the side barsr i ofthe frame on whichV spacedl disks- I Il are eccentricallyi; mounted, one y'preferably adizaieenteach offthe'bars 4.; A rotationh of the shaft IIIYewill changefthe positioniof the frame described with respect-,toI the; table from itsextrem'e lower position shown-in Fig. 2 to its-extreme-upper posi- ,"complished: AtxoneV end (1i-the Sha-ft a plate I2 tionshown in Fig. 3,*passing-'through intermediate positiongwhenfadjusted from. the position ofv vsubstantiallyr circulariormis secured atthe outerrside oftheadjacentbar- (Fig. 5) An op-` eratingfhandle I3 issecured to theadjacent end off. the .shaft-.f Inland carries a spring actuated Din lmally `forced inWardbythe spring to engage and'pknob indicated at I4,- the .pin being noragainst the outer sideof theplatell! land to be drawing thefspring actuated pinfrom anopening the, vshaft may be turned andfmaybefmoved'a v upon the work.

Atfthe inner side'ofy each of the frame bars 14., l.

xstep to the nextV adjacent opening or to any of the openings which will receive the pin. The 'eccentrically mounted disks I I are vheld with pressure against the upper side of the table Ir by a weight I5 rsuspended by the yrod vIIS rfrom guides in the formv of tracks I8, one for each bar 4, are permanently secured. A cari-iiageis mounted on and extends Ybetweencsaidfguide 4 tracks. The carriage includesftwofspacedfsid plates I9 lying in vertical planesone inside` v of lshown in Figlil with the eccentrically mounted tracks.` Between thefside plates I9 a horizontal base 2|is located at'the upper side and atv each sidef edge of: 'which' an angleV bar 22v is perf manently secured'. `'Said'. angle bars,A at what may Y be termed their forwardends, are connected by suitable fasteningsi-:shown at 23, to the plates I9. At the opposite ends theplates' I9 are eri-1v tendedv upwardly to provide yvertical'extensions `24''eachhaviriga plurality of? spaced openings therethrough and removable fastenings 25 are used ,tov connectf'the'bars 22'byV said iastening's passingthrough -selected openings fin the 'fparts 24. It is evident'thatth'eangle 'of the base 2I to ther horizontalrray--be varied 'andadjusted depending'upon'jwmch of' the openings in the partsf2'4 `are"s`el'ected :to receive .the"removable fastening devices 25X" Adjacent therearend of -the'carriageva stirr'up having, a lower horizontal bar section y26 Vwith upturn'ed"er'idsfl z'I-"one iat' reach-end thereof is mounted, thefpartsA 2'I passingupwardlythrough 4suitable*openings in'thebase 2l and thehori-` zontalleg's ofthe' angle bars 2.2.' '-A rockshaft 28 is mounted^on and' extends between theupper ends of theT parts 213, orwhi'ch lshaft spaced disks or rollers-29 are veecentrically mountedvand bear uponV the "upp'erf sides ofj the V:l'iorizontal tleg's of the angle bars f2.2." -f 'IheslflaitV 2 8 'maybe rocked manually' :by afhandle ,301* connectedtherewith' to thereby raise andr'lower the horizontal section 126 oi the s'tirrup `forY clamping a boardY between it duringsuch reciprocatory. movements.

opened to provide vcommunication between the v pockets and the pipe l33 but the other valves are kept closed. Then upon opening the valve 34 and operating the air suction means connected therewith air is drawn from the pockets covered :by the board 31, and the board pressed tightly by air vpressurei'cfrom beneathagainst the rubber members 32of`th'e pocketsf-covered. z 1 f Initially the board will be heldin the position disks I I operated so as to lift the free end ofthe "frame to its uppermost position. The carriage Whicljncarriesthe board is moved back and forth K ponjftlieltrackfgudes I8 and because of the inclinationfoffthekboard 31 to the horizontal, a part ofV the board will be cut away at its under side reciprocations shaft I0 is turnedor rocked moving the holding pin I4 from one of the holes in the plate: I2eto E.the next vadjacent.andvthereafter andthe )under side ef the base 2l of thecar- 50 e p ZI-adjacent its front endat its 'under side'vis.y `p"ovidedlvvith a plurality of longitudinal pockets 1,3I""at the fsidesvof' which are rubber strips 'or bars "32 each of the`pockets'3I being sur; roun'dedvby al frame" of rubber. e A pipe v33 to ybe Aconi'iefcted ,with an air 'suctionfapparatus at' its 'rear "endlis'fsupplied:withfa' control valve 13'4, fand at its oppsiteend over thepockets 3l 'with over the bar; 26' of-'the stirrup and positioned 4with `iivzsforwalcll endsubstant'ially flush 'with the carriagfejisv clamped in placeby rocking'the shaft 28 ;to`fe l'evte`,the`stirrupasfin'Figs. 2l and 3,.it

being yunderstood that the stirrup" will .have beenl lowered whiley the bc'xardisv v'being insertedi'n to lthe others in succession. At the ,-'nal .lower-r most positionf 'of the carriagetfas inflig r2) 1` ythe scar'nf'gy '.-cut f will l be completed and an inclined surface, as at 382provided at thelunder side;` of the `board andlat theinner endeportion thereof.v Apreleasev i offtheVi suction pockets I1 at-f31I; is; 2pro vided byfopening the valve; ait-34.l and :by rocking the shaft 28 to lower the ho1dingestirrupand theA board. `or 'zother 4-nlexnber `uponf.'whichf'fthe scarn'g operation: has been performed .is removed; a1` succeeding board putin `place and thefoperaf tionsrepeated; fIt isvto beunde'rstood that with variation" of. the widths o fboards` operated 'upon opened :in `acco'rdancezw'ith the, gnumber; oft` pockets which :aref covered yat 'their under sides by.. the boardwhichist'o'be'processed; T o Y'This'scariing attachment ladapted to'be readily applied to a'suitableplaner isr of a relatively simple and inexpensive constructibnl The :only

things whichlhaveto be added'toftheplanerare -theside "supporting bars 8 lwhi'chlpivotally carry O'f courselfby-"arsimple means connected with the y shaft I Il Aand extending to y' the `machine :operator who handles the` WorkY heIv 'alone mayl effectively operate themachin'e, dispensing with one Aof the menu'sed. f '1 l if The invention y'has t proved' very z practical v `and useful"an d` with it vtrue and.y accuratel 'scarng is rapidly and eiectively accomplished and atfa minimum of cost `for Isuch purpose, v

*The vinvention is d'ened'in' thev appended claims and'- is to.be"considered comprehensive of processing? machinery for all-nforms 'of structure comingwithinfthei'r scope.-

man@ 1- 1. In a construction/ofthe classdescribed,a`

planer having a'rotatingcutter rotatable about a horizontal 'axisglocatedfbetween opposite sides" o'f the table and adapted to fprcess work/passed thereovenan open il frame located over the table,

means forpivotally connecting the frame aty one end to said table adjacent'a. side thereofmanlually controlled means' carried by jsaid `frame Aadj ac'ent` its opposite 'end lforraising vand ovvering `said opposite end offthe 'frametoj- @sigent 'distances`- with'frespect .Y'to" the' table and Y"thereby Between l agate-44'? 'uit me frameabout fitspivoter moan-uns; enf-csr'- 'ri'agle' mounted on" andi extending.L bet-Ween opposite slides VofA said ,fi-ame; for `reci'prccatcry movements/inthe directionoffthe-lngtli-offthefraine amifcver said cutter, a base on said". carriage, means' for pivotally' mounting* said base adja'- Certtone ,end on said carriage, means'A for` connecting said base at its; oppositeel'id to'said carriage at diifrent'vertlcal positions whereby the angle of the base with respect to the carriage may be changed, and means for releasably clamping a board or similar article to the under side of the` base, for the purposes described.

2. In combination, a planer table having a horizontal upper side and having a cutter rotatable about a horizontal axis between opposite sides thereof for processing work passed over the cutter, a frame pivotally mounted lat one end on said table adjacent a side thereof, said frame extending over the table, means for supporting said frame at its free end portion on said table and for adjusting said free end portion of the frame in a plurality of steps to. different positions above the table, thereby tilting the frame about its pivotal mounting, guide bars, one at the inner side of each side of the frame, a carriage having sides mounted for longitudinal movement back and forth lengthwise of the frame on said guide bars and a base between said sides,"

and releasable clamping` a' britse-flocatari1 betweenfsaid carriage side' bars,-

means for `pivotally connecting f *the* base .ati 'its innerVA end't to* said carriageA sidf'xb'ars; removable means adapted to 'f be associated witlsaid vertical' extensions' at any `selected openings* therein for securing the' base 'atV its outer end, board clamping means for 'releasably-- holdinga board z'igainstthe under` side ofE the'l base,A horizontal sha-iti rriourltedv on' andextending between 'said side bars of the frame adjacent said frame cross bar, disks eccentrically secured tosaid shaft and means for manually turning the shaft andreleasably holding it in a plurality of different positions.

5. A construction containing the elements in combination dened in claim 4, combined with a weight suspended from said cross bar, and said means for turningthe shaft and holding it in adjusted position comprising a plate with a plural- 3. A scarflng attachment for application to a table of a planer comprising, an open frame having spaced parallel sides, a cross bar connecting said sides at one end and a bar connecting said sides at the opposite end, means associated with said last mentioned bar adapting the frame to be pivotally connected by said bar at one end to a planer table at a side thereof, a reciprocable carriage mounted on and located between the sides of the frame, said carriage including spaced side members and a generally horizontal base disposed and lying betweensaid side members, means for pivotally'connecting said base at its inner end'to the side members of the carriage,

means for adjusting the base at its outer endvertically to different positions to thereby change the angle of the lower side of the base with respect to a planer table over which it may be located, means for clamping a board or similar work to be processed at the under side of said flat bar having downturned ears adapted to,

receive a pivot rod for pivotal mounting of the frame at said end thereof, horizontal guide bars at the inner sides of the side bars of the frame, a carriage having spaced side bars with rollers thereon to traverse said guide bars, said side bars at their outer ends havingvertical extensions with vertically spaced openings therethrough,

ity of openings therethrough secured at the outer side of one of the side bars of the frame, a handle secured at the adjacent end of the shaft and a spring actuated pin mounted on said handle processed against the under side of a carriage reciprocable over a rotating cutter comprising, a

-stirrup having a horizontal bar with a 'vertical leg at each end passing upwardly through said carriage with the bar located below the under side of the'carriage, a shaft rotatably mounted on and Aextending through said vertical extensions above the carriage, disks eccentricallymounted on said shaft whereby on turning the shaft said stirrup may be raised or lowered to releasably clamp a board against the under side of the carriage, and suction means at a distance from said stirrup for` additionally holding the board against the base by air pressure thereagainst. i

7. In combination with a horizontal planer having abody and a rotating cutter, of a frame, means for pivotally connecting said frame at one end to said body, means for moving the opposite' end of said frame in a direction away from said cutter, yieldable means for moving said opposite end of the frame in a direction towards said cutter, a carriage mounted for reciprocation on said frame and over said cutter, andmeans for releasably clamping work to be processed on said base.

8. The elements of claim 7 in combination in i which said means for releasably clamping the work includes suction means vfor holding the work against said carriage whereby the suction is applied to the surface of the Work remote from the cutter.v y f 9. In combination with a planer having a rotating cutter and a xed body, of a frame,l means pivotally connecting said'f-rame at one end to said body for tilting movement of the frame with respect to the cutter, means for raising and `lowering said frame adjacent its opposite'end to tilt it about said pivotal connection, a'carriage mounted for reciprocation over the cutter on said frame, said carriage having a base lying lover theA cutter and means for releasably clamping'work to be processed at the under side of said base including suction means for holding the work against the under side of the base to leave the under side of the work free of obstruction for processing by said cutter upon moving thereover.

10. A horizontal divided table having `a rotat- A4 i n Aable c utter to turn on `ahorizontal axis between parts of the tab1e,'a frame pivotally mounted at vfied by said frame, s aidcarijiage having a-.bfase .adapted to be passed ,back and forth over the cutter,` meansI fori-adjusting the baseof said. a;- riage to different angular positions, andsuotion means associated Withsaid basefoi clamping the .inner end. portion of the woikftable processed against the under sdeof'the `loase tothereby render the cutteriree v of obstruction whena'cting