US2012576A - Woodworking machine - Google Patents

Description

19357- F. E. MONTGOMERY 2,012,576

WOODWORK ING MACHINE Filed Aug. 17, 1935 2 Sheets-Sheet l Morzzgpr Aug. 27, 1935. E MQNTGOMERY 2,012,576

WOODWORKING MACHINEv Filed Aug. 17, 1955 2 Sheets-$heet 2 Mayan/ 02 /Z,

Patented Aug. 27, '1935 UNITED ST woonwoakmq MAQHINE Francis E. Montgomery,

Des .Moines, Iowa; ras- .signor of forty-nine: per cent to Lee 1 K. Weil,

Des Moines, Iowa.

Application August 17', 1933; Sa No. 685573 The object oi my invention is to provide a wood working machine which is simple and durable; 'A further object of y inventionis'to provide n a woodworking machine having 'novel'features ofconstruetion whereby partsthereof requiring accuracy can be inexpensively manufactured yet by thesubstitution or said elements for elements now'generally'used in a wood working machine,"

the desired accuracy can be obtained.

More particularlyit ismy object to provide a wood working machine in which a work table is made adjustable in parallel planes without the necessity of having accurately machined sliding guide-ways which have a tendency to clog up 15 with dirt and wear to such an extent that ac-V curacy, after considerable 'use, is destroyed. A'furtherobjectis to provide means for supporting a worktable relative to a saw mandrel or the like by means of 'linksi or'bell cranks arranged in parallel, and adjusting means for the table in the form of a screw threaded shaft for swinging one of the links. 7

stillj'afurther object is to provide novel means formounting a motor and counter-shaft so that motor andcou'nter-shaft belts canbe changed on the various pulleys in a facile manner, and adjus'tment of v the counters-shaft belt can be effected as desired. v I

Still'a further object is to provide anovel form ofgbase' plate for supporting workwith relation tothemandrel, which base plate .is carried byla slidable-frame, the frame itself being movable by novel mechanism. Y l f 7 A further object is to provide stop and depth gauges for the baseplate and a means for springreturning the base plate, with the tension of the spring equal, regardless of i the position of the base plate from the-mandrel, this being effected by a spring urged element which relativeto the base-plate. a

, With these and other objects in view my invention'consists in the construction, arrangement and combination of the various parts of my device,; whereby-the objects contemplated "are attained, as hereinafter morefully set forth, pointed outjin' my claims, andillustrate'd in the accompanying drawingsinwhich: I 'Figure' 1 is a side elevation of a wood working" machine'embodying' my invention. it

Figure 2 is a plan View on the linef2-2 of Figuretzl, the work table of the machine being're moved-' and its supporting ears being shownfin section.

Figure '31s a-partialplan and partial sectional is adjustable view on the line 3 3 of Figure' 1, sho win"g afba se jplatefor work adjusted toadiiferentposition; I A

Figuree ,is a sectional'viewon-;the'=1ine4+4 of Figure3u Figure 5 is ayertiCalsectional view on the line 5-5 of Figurel; and

Figure6 is a view similar to aportion'of 5 showing a different adjustment of parts.

.On the accompanying dra I s, I have I reference character A to indicate generally-a main frame. 'The frame -A *has supporting legs l0;

whereby it may be supported relative to noo surface or the like l2.*

cmss bars e t dpri the name A a d a support bearings J6; in which a mandrel 18 1s rotatably mounted. 'Thegmaridrel 8.-is adapted: to have various; tools mounted thereon, for v in stance a circular saw blade Manda lathe chuck 22, other tools} may be supported in a manner well. known to ithose familiar with wood 1 work- 'For; driving the mandrel l8; I mere? 24 'mountecl'on a basej plate. 26; The baseplatelfi uses? the g,

is hinged at 28 to a motor and counterg-shaft' sup- 5 p r 3 i support so is hinged at 322m the main frameA. a

A counter-shaft 34"is beltedto the motor by a; m motor belt SBand to the mandrel: l8 byacountershaftbelt38 v 1 The'support 30 and the motor 26 andicounter- The position of p i v h u t can be maintained by means of a bolt and wingnut 412 coasting vwith a slotted link 44 having its lower end pivoted to the support 30 and with a stationary v bracket 46 extendingifromthe frameA.

In connection with the saw blade20,; Ipro vide a work table 48 which canbe ye'rtically adjusted yet maintained in positions at right angles to the.

saw bladelbyl a supporting arrangementiwhich will now be described. Supporting; ears 50 depend from the loweri surface of the work table'48- and links 52 have their upper ends pivotedfthereto. The lower ends of the links are secured to shafts 54 oscillatable in the Crossbars l4.

80 I shaft 34 carried thereby are counterbalancedby a: v

j The shafts 54 are connected for simultaneous;

oscillationby depending arms 56 connectedto-f gether bya link 5 8,v i'l'he shafts. 54 maybe-0 c lated and the position of the work table48 thereby? changed 'by means ofa crank 60; 'I'he crank 60" i which is threaded into a yoke 64 conne'ctedvwith one of the arms 56.

is secured toa rod 62 The rod-62 is'rotatably but non-slidably extended; 1

through iai'side bar oftheframe A. p In'association with the'mandrel l8, or more par positionl fc l t r A slidabl'eframe B is'provided consistingiofinner rods 16, outer rods 18 and cross bars S ll, Theseare all assembled in rigid position relative to each other. v the cross bars-H1 and 12 while the rods Hi-extend through the cross bar Ill only; iThe base plate the slidable frame B; l v V a The base plate 64 is adjustably connectedto the slidable frame'B by means of a rod 82 rotatably and non-slidab1y associated with the base platev angi rscre threaded relative to the'right hand on the drawings, A crank 84 is prot t iatinet ero g .1 V A stop collar 86 is secured to one of the inner reds {Hi-zto limit;ita-m'ovementtoward the right. A gauge collar 88 is adjustable along the other inn ql lmt 16-; Aset screw 90. is'provided for one i of the base plate rods fl. The p rpose of these will herei afterbedescribedi l slidably; mounted on" one ofthe innerrods 16 is a-lsprin g urged-elementflz. It is of U' shape, having one of ;its ,ar nsslidable on the rod 16 yet c'apa-e ble of being'locked relativethereto by a set screw 5 tfA'sprm SQsurrOundsthe'rod. i6 and ;is-inter-.

" posed between the cross member 10 and'one arm ofthegspring urgedelem'ent 92. The other arm ofwthespring urged element engages the opposite side ,of the crossbar 10; i l

4 ,A.eaa m' 9:1 isv connected 'withIthe spring urged otedl at liiiand; has a yoke! I04 \to selectively ,rece ive any'linkbf the chain'91. j When it is desired to adjust the height of the work table l8,'the crank-en can be rotated in the proper directionhforl swinging the-{shafts 54 to positions as shown in ,Figu'refB, one in" solid lines andthe other in dottedliiies. It will be noted that 503 triple pulleys are provided-for. the 'motor' belt A 36.

By s'wi'nginglthemotorba'seZS to the dotted position of, Figure 6,4the motor shaft approaches the counter-shaft .softhat this belt can be slipped, from one pulley to the other'for changing 'the relative, speedsebetween the shafts. The. motor then returns the base to thefull line position in whichposition the'belt istaut. F Y

Double pulleysl; jare-provided forthe countershaft belt38i T This v-belt' "can be loosened by raise. support .31]. to the'position fof 'lEigur'e '5 so an belslipped fromrone to the other. To

raiseftthesupport,"the bolt '42:"is first loosened whereupon the, support, counterbalanced Y by V the i spring llfl can; beflraised with. 31 y little effort. After the belt'is placed upontheproper pulleys, h the link 44 'canbe-lsliddow nwardly and thebolt Hire-tightened r I d v v :With the. setscrewlflib and the gauge collar 88 lopse,l wut the,set, screw4 of;the1spring: urged l 70?; e entaz tightened, Work; can be placed against) the base-plate 64 and pulled towardthetool on the mahdrel lflLso that the'fltool will operate on the.

worn fIf hJs,pullingisaccomplished by depressing the foot'pedal' "10' against 'theiaction of the-spring;

l m Pi s- -W9 c nt ui k bore routing bits are used.

The rods 16 extend through both,-

will stop feed movement of the base plate; In rods 68 are slidable through the cross bars 80 of i said basejplate comprising'a slidable frame supwhen angers: or bits are used or routed when To compensate for a thicker piece of work, the set screw 94 can be loosened and the frame B adjusted further to the right and then the set screw 94 re-tightene'd or some adjustment can be had by rotating the'crank 84. Where a slow speed of feedis de sired, the cranl; 84 can be r0- tated without using the pedal I00.

In'routingor boring work; it" is sometimes desired to. rout or bore only-to a rdesir'eddepthb "This depth can be regulatedby tightening the collar 88in the-proper position so, that when it engages the cross bar Hi-of the main frame A it routingwvork it is {sometimes desirable to use this 7 gauge to the required depth and then hold the material at this depth while moving it over the base plate fi l tolengthen the routing hole into a routing slotfi For this purpose the set screw '90 can be 20 tightened to retain the base plate Bl-ma predeterminedposition relative to the frame'A. v 5 t a The Iat'hechuck 22 can be used in. conjunction with aftail center 106, removably positioned on 'the-base..plate 64,:and thus the device can'be 25 used as alathe withthe crank 84'as an adjusting means ffor'thl tail 1 center. suitable. tool rest,

I notjshown; would then be used in connection with the machineg'whenlu'sed as a lathe.

Aplatformilflii maybe mounted on theframe A- for-supporting aplaner jig :saw or other apv paratus, .the count'ershafti l being provided with a, pulley H li for driving suchapparatus.

Some .changesmaybe made in. the construction and arrangement of theparts of my devicewithout" departing from the realcspirit and purpose of myqinvention, wand my intention tocover bymy claims, any modified forms ofstructure or,

use of mechanical equivalents, which may i be v reasonably. included within their scope. element 92 and extends over a pu1ley98 and then;

to-aifootpedalJ00; The foot pedal I00 .isfpiv .11 claim as my'invention: I} v 1. In a wood working machine,- a main frame, a ,mandrel. rotatable thereon, a, base plate for work to rest against, and meansfor mounting ported on s'aidmain framegflsaid base plate being carried 'thereby, stop, means for" said" slidable frame, a member slidable relative to said slidable frameand having a'stOp portion engageable with said mainframe, a'jspring urging said member to assume'its stopped position, means for locking said; member to said slidable frame and a pedal for-moving said member and thereby said slidable fram'e when the two are locked together; against the action' of said spring. 2. -In a woodworking machine, a main frame, a second frame comprising rods slidably carried by said main frame and cross bars connected with said rods, a work rest carried by said second, frame-a yoke on one of said rods and straddling 6m a part of said main frame,'a spring on said rod between said main frame and one arm of said yoke -to constrain the-other arm to engage said main frame, means for-locking'said yoke to said rod, and manually operable means forlmoving said yokeagainst the action of said spring. 7 3. In a woodworking machine, a main frame, a second frame comprisingrods slidably carried by said main frame and cross bars connected with said rods, a yokeon one ofrsaid rods and strad-- dl-ing a part of said main frame, a spring on said rod'between said mainframe and one arm ofsaid yoke tocons'train the other arm. to'engage. said main frame, means for locking said yoke to said rod manually operablemeahs for movingsaid 7 p,

yoke against the action of said spring," a third frame slidable relative to said second frame,

screw-threaded means for adjustingsaid third frame relative to said second frame, and a work rest carried by said third frame.

4. In a wood working machine, amain frame, a mandrel rotatable thereon, a base plate for work to rest against, and means formounting said base plate comprising a slidable frame supported on said main frame, said base plate being carried thereby, a stop member for said slidable frame said stop member being movable relative to said slidable frame in the direction of itssliding movement, means for connecting said stop member in any desired position relative to said sliding frame, an abutment on said frame member for said stop member to normally engage, a spring urging said j stop member toward said abutment, and a pedal operatively connected with said stop member to move it and thereby said slidable frame against the :action of said 1, spring; 7 T

5. In a wood working machine, a mam/frame, I

atmandrel rotatable thereon, a base plate for i work to rest against, and means for gnounting v said base plate comprising a 'slidable frame sup,- 3 a v I ported on said main frame, said base plate being carried thereby, a stop member for saidfslidable frame, said stop member being movable relative to said slidable frame sliding movement, means for connecting said stop I a member in any desired position, relative to said sliding frame, an abutment on said frame memher for said stop member to normally engage, a spring urging said stop member toward said in the direction of its abutment and manually operable means for moving said stop member and therebyjs'aid slidable r frame against the action of said spring. 7

FRANCIS E. MONTGOMERY. 2o

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