US1850695A - Miter machine - Google Patents

Description

F. SCOTT MITER MACHINE March 22, 1.932.

Filed Sept. 19, 19:51-

2`Sheets-Sheet l Eqi.

INVENToR El ank cutt vHI.)7 `ATTORNEY F. SCOTT MI TER MACHINE March 22, 1932.

FiledSepj.. 19, 1931 2 Sheets-Sheet 2 INVENTOR :1'- r' E11/11A 5 :mit

HIS ATTORNEY WITNESS:

"25 Centtlie sides-of-saidbarfand oonneetediby With alde'pres'sio'n for :receiving spring guidefmembersfor thesawaorcuttingrimplee plane'dl YPaLfendMafL-fzz,v 1932-1 I n Y ,f 1&8-5056915;

, e IRKSCOTT; orxoRBISoNIA, rENNsvLvANInj e ikQMHERMACHINET L Animation :neaA september-19', 1,931.; `Serenatas".1563,79?. i

er Y andYhas-'oraneobjeot to'provide azdevice hav-r views.: t Y V- f .f f,

ing-guidesvvhiehmaybesetto variousangles, The improved'miter maohine,whieh"forrns;

and with a? cuttingfimplementarranged: ato.' thesubjectmatterfofthisapplication,come v y Y -prises ailoed 10, Wliiehlin ordinary construe;- 55'V e vAfuIther, object of'fthey invention isv to tionfwill be an integralscasting,` although -tlie a provide-ajdevice having `aloe/dl lWitlif guideS-inventionl'is in` no Way-limited to materia-1 Y mounted to slidethereonggandacentral-memf. or. method of making.,Tl1e bed is provided n ber?-pivotallyconnected with tlleqguides With adove taledislot `11ezztending;along Y Y 10" Wherleby'saidguidesmaybe' setto varying tlie median line ofsaidrbed, lWitha ban-12 69 f anglesforin parallel relatio-ngand'withf any mounted to: slide inssaid Vdove tailed slots such angle ;or parallel aacfutting implement :(Atfioriadjaoenttothe oppositeendsofthe to ibi'seetV tlief angle orftoeut an article at 90 barlQ', spaced pairs of uprightst, 1344-13? and n d yrelativeto the-parallel guidese# A Y- f Y 14:-141 lare -er,eet`ed..1 Thesezuprights .have 15" .vivAfurthermobjeetofthe inventionlistopro# vertically` extending grooves 15,1 as shown; 6.5 4vide-improvedmeansfor guiding the saW,-or 1' more particularly at'Figure L,vvith blocks cutting implemennrelative toi the-guide-mem- 16e-167': 'slidably'mounted in saidfgrooves bers'.f 2f" A V Both of the pairs of 4upriglits"13;13:- and A 4further `object 'of/the invention isfto vpro-` 14:-1411are substantially videntical#and' each videfimproved means Vfor#clampingV Work isfprovidedjwith across-head [1T vWhiohris I, fagainsttheguide-'members;=y k l secured/in anyy approvedmanneras'byftlie The-invention therefore,comprises-a bed boltsor screws 18, so that the upri'ghtstrue` y havingfabar-slidable longitudinallyrelativeture so formed is `rigid Withtl1e1barl2-l One thereto-,Withgui-de-membersfpivoted'adjalor'bothof thefbloeks'llffisfprovided Thisinvention)irelates'to.Lmiterfrnaeliines;l responding l, parte yl'tliroughoutA1, the several' l" 75 means offslots Withf the"fbedf;whereby-` the Y pressed member v19 Y. for holdingthe `vblocks i Y movement of the-'bar '-Wiill-change the angle'v 16S- 16" yieldingly V,at their ,upper limit Lfor y Y of [the guidesysaid'bar Carrying al'soLmovable i the reasons which i will; :beghereinafter eX "36 ment positioningk said cuttingimplementrto f Pivoted tothe barl'l2 21and .8:9

v3ltl1einventionfandthe mtas the -bar1121'so`thattheubar. may be adjusted f50-ix- Y'Like.-eharaeters:oifreferenceindicate;'cor-r 2,;,thatethe savv" is:Widenthanfthe;length-'of'LTVA accuratelyf-biseet the angle ormedwbythey VQlgsuelipivoting beingbymeansaof'serews 22, guidefand "improved *meansiflforf clamping insertedqini properly positioned'orices,one.y `Workagainstltheguides. l f' pairjof 'whielrgareshown at 23. Anynum- The drawingsillustrate anembedmentofberOf-theseorlC-es 23`may be provldedialong f 1.;- "e 'f l 'l vided With slots 24: and 525::With Clamping: Flgum 2 sa' new f the machine 'm end members;extendingjthrouglfjsuchslots; rep-V resented merely for tliepurpose ojillustrajf.

the guideblocks 16-*16 so that the cutting ed f extends below these blocks and is not v y absolutely accurate. In other words, no mata ected thereby.

The bed is also provided with other grooves 31 and 32 in which are mounted bars 33 and 34. These bars slide longitudinally, and are provided with spaced recesses 35, and a pin 36 is insertedthrough one of said recesses andinto a socket 37 in the bed, shown more particularly at Figure 5. Each ofthese bars 34 carriesan eccentric clamping member 38 which is provided with an upstandln ilange 39 so that by operating one of Vsai clamping members, work interlyingsaid clam ing member and'it-s adjacent guide may be c amped firmly therebetween. r Y

As shown at Figure 1, the guides 20 and 21 i are set approximately at 90 relative to each other, an the saw 28 is positioned to bisect this angle forming a miter ofy Mitering at 45 is, of course, done in the great majority f: cases, but mitering at othery angles is vat times necessary. To set the device to form a miter to fit any angle, the angle is first secured on abevel, and the bevel applied to the guide members. In the case of a 45 miter, the angle will be securedby the use of an ordinary carpgnters square. The clamping screws 26 will V*loosened and the bar 12 moved longitudinally yuntil ,the remote sidesof the guide members it exactly to the inside of the square. The clamping members 26 are now tightened to hold these guide members in this position, and work placed between one guide member and its adjacent clampingy member,l and clamped therein, the bar 34 being moved as necessity :requires to accommodate the work.

The saw,being now employed, ,will bisectthe 909 angle andorm a 45 angle. Mitering at a 45 angle is a relatively slmple process, but mitering to fit an yangle other than 45 is far less simple. With applicants device, kan ordinary carpenters bevel is `fitted to the angle. It isthen itted to the remote sides of the guide members 20 and 21. f

Let it be assumedk that it is an acute angle that is to be fitted byffa miter and that the bevel, when set tol fit such angle, will require the yguides `to be set 1 atdotA and 4dash line positlon, shown at Figure l. -Merely setting thesefguides` to. exactly correspond to the angle to be fitted will absolutely insure a fit i oi the miter as the sawmust in allcases bisect vrthe angle whateveriit may be. It is obvious also that an obtuse angle, wherein the guides wiki .lie between. the full line positions and Vthe'dotted linepositions, will beset in the same manner., and themiter will be rcut with absolute fidelity. n As shown in dotted-lines, the guides have been set in alinement so that thesawgwill cuta angle. `Bylthe use `of this device,v` the accurate`-itting yof a miter fjointlto any angle is extremely simple `as it is always extremely simple Vto obtainfthe exact 'angle on a. carpenterls bevel. This being obwor -a vtap ony the to of therib 29 will is in condition to operate.r

rights, means slidably connecting ktioned bars.

-Lemmens tained, and the guides 20 and 21 being t0 fit this bevel, the miter cut will always be A removed, or other worlg inserted, the saw is raised to its upper limit-where it is held yieldinglly(7 by` means of the members 19. When the is inserted and the saw is readl for use, .A iSen se it so that it wil drop to position for wor When the work to be mtered iswider than would .be `received vwith the 'parts arranged as-shown in full lines at Fi ure 1, the pivot screwsf22 are removed, the ar 12 movedt the left until thesey screws will engage some pairs ofy perforations as 4those shown at 23. Thescrews are again nserted,`and the device The miter machine, herein illustrated, may be'modied in various ,ways without ydeparting from the invention herein set forthand hereinafter claimed..V l

The invention is hereby vclaimed as follows:

1. A miter machine comprising a bed having a, plurality of longitudinally extending slots,` bars mounted in saidpslots, uprights mounted upon one ofsaid rbars and movable therewith, a cutting implement longitudinallymovable through said uprights and guided thereby, guide members mounted upon the ybed in convergence, the converging ends being connected with the bar carryin said upe guides to. thebedr upon opposite sides of said bar, work clamping mem ers carried by the other bars, and meansto secure said other bars yat various longitudinally adjusted positions.

2. Armiter machinecomprising a Vwork table havinga pluralit of parallel slots in Aits face, a ybar-,mount saw guidescarried by said bar, bars mounted inthe other slots, work 'des pivotedto the lirst mentioned barl andgldxxtending over kthe 'second v,mentioned bars, means ,to hx the second ,mentioned bars in longitudinal adjust,- ment, and clamps carried by the second mentionedflmrs.vr z y* 3. A Amiter machinecomprising a-work table havin 'a plurality of parallel slots in itsV face, a ar mounted to slidey along the 1,

median line'of thek table in one slot,"sa guidescarried by said bar,bars mounted in the other slots, work. guidespivotedto the yfirst mentioned" bar and extendin "over the second mentioned bars, means to x the second mentioned bars vin longitudinal adjustment, and clamps carried bythe second men- 4. A miter machine` comprising a work yto slide in one slot, l

its face, a bar mounted to slide inV oneslot, eccentric clamps carriedbythe second ymensaw guides carried by said bar, bars upon opposite sides. of the irst mentioned bar s mounted in the other slots, Work guides pivff oted to the first mentioned bar and extending tioned bars.

In testimony Vwhereof nI name tothis specification. i

f FR

over the second mentioned bars, meansto fix vthesecond mentioned bars in longitudinal adjustment, and :clamps 0nd mentioned bars.

V5. A; miter machine comprisingl a Work table having a plurality ofparallel slots in Acarried vby they sec`k l its face," a bar mountedy to slide in one slot, n

saw guides carried by said bar, bars mounted in the otherSlOtS, Work guides pivoted-to and 'extending upon opposite sides of the 'first' mentionedbar. and extending over the second mentioned bars, means to ix the second mentioned bars in longitudinal adjustment,"y

and vclamps carried by the second mentioned 6. .AI miter'machine comprising a Work table having a plurality of parallel 'slots in*y l its face, a bar mounted to slide in one slot,

f saw guides carried by said bar, bars mounted in the other' slots, Work guides pivoted to the first mentioned bar and extending over the second mentionedbars, means to fix the Work guides to the table, means to fix the second mentioned bars in longitudinal adjustment, and clamps carried by thesecond mentioned bars. i

` 7. A' miter machine comprising a Work table having a plurality of parallel slots in its face, a barmounted to slidein one slot,

sawV guidescarriedby said bar, vbars mounted in the other slots, Work guides pivoted to the first `mentioned bar and extending over the second mentioned bars, means to fix the Workv guides to the table atvarious identical anguf lar adjustments, means to fix the second meneV tioned bars in longitudinal adjustment, and

clamps carried by the second mentioned bars.

8. A- miter-machine .comprising a ,Worky table havinga plurality of parallel slots iny its face, a bar mounted to slide in one slot,` i sawguides'carried by said bar, bars mounted second mentioned bars, meansto ix the secs ondv mentioned k1bars in) longitudinal adjustsecond mentioned bars;

f in the other-slots, Work guides pivoted to the f first mentioned bar and extendingover` the 9."A"miter-machine comprising` ak Work' table having a plurality .of parallel slotsinv its Aface, a bar'mounted torslide, yalongfthe median .line of the table in one slot,fsaw

Y r guides carried by Vsaid-bar, bars upon opposite sides of the iirst mentioned bar mounted in; the other slots, Work guides pivotedrto and extending upon oppositesides of` the Y lirst mentioned bar @and yextending' over `the second mentioned bars, meansto x the Work guides to the tableat various identical angu-

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