US1353526A

US1353526A - Rotary sheet-metal cutter

Info

Publication number: US1353526A
Application number: US359321A
Authority: US
Inventors: Frengle Fred
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-02-17
Filing date: 1920-02-17
Publication date: 1920-09-21
Anticipated expiration: 1937-09-21

Description

F, FRENGLE.. ROTARY SHEET METAL CUTTER. APPLICATION FILED FEB. 17| 1920.

1,853,526.. I Patntasept. 21,1920.

2 SHEETS-SHEET v1.

l III 2l nimm 4 IN ENTOR wwe/f j/ BY Uf() Y( ATTORN? l ether penten thereofoiairnn srarne earner i FRED FRznvofLn,l on cornrr,V CALIFORNIA.

Application ined

rebfu'fy

17, 19,20.. lserial N0.- eoel.

-lar openings in sheet metal, and in which a rotating shaft carries at one vend a ycrossbar provided with acutting diskadapted to operatein conjunction ,with a die. f

An object of the inventionis to provide a Crees-bar vthat vCan fee adineted relative te. the shaft so that openingsof different diinensions may be cut.

,A further Object of the wenn@ ,is i@ `provide interchangeable diesto work inl conjunction with theAcntting-ineans.r

A still further object `s to'provide dies with :a plnralityef sreeveeeen furtherance win appear athenescription proceeds, it being understoodcthat Vchanges maybe'rnade in V theenact embodi' AI nent.oitnlyrnpneYelnente ffrelntheee ener/n in the accompanying drawings, described lin thespecication or as pointedV out `in the claims.v

In the drawings, ,throughout which like referencecharactersyrepresent like parts:

Figure v,1 is a side elevation of the.` cutter and a portion of `a post or standardto which l .the cutter issecured.

.,Fg. 2 ,1S aseetenal Yiew Online afa, Flg. 1.

Fig. V3 is Va vertical sectional view of a portion of the device.

ig. 4 ls avertical sectional View. of. an-

i 'Figs 5,6, Q/8V and oftheinvention.A e j I Fis' l-OzS a plan View' 0f-.theiran1a ,Show- 9 are rviews v of Vportions .eine one efthedes depeeed thereon- ,Y

Referring, to the Vdrawings in deta-ilf'v The, numeral v1 designates-` a franie, feennprensa Iverteal niernberieeenregt to a 1 Standaarden peet 3 lei/,means eftaetenlnsnevices 4, ,an upperbracket l5, an intermediate Abracket 6 andy a lower bracketgor. die table 17 In the freeend of the bracket 5 lis va vthreaded vertical opening V8, in whichA is -operatively disposed a screw L9, to thefupper end of which is rigidly secured an Opating Hwheel 10. The lower end oi the screwr 9,is

' operator yfor in operation.V v

tion'and yis provided witha socket "114,1,at the .base of whichis aball seat 12.

v Specicationof Letters Patent. Paftlted 1,920. l

larger, diametrically,'thannits threaded lpOr- Adjacent the free lend oi saidenlarged A portion ofthe screw 9, are twoyoppositely disposed threaded openings 1.3, 13,which connect with the socket 11v andare'tted with' i fnitneppeetely depeeedansee ,155155 hav- .lne horizontally diepeeed openingS lereeieterinevtn Openings 117 extending nennen tally'threnehfflansee 18,1%@ apap 19 removably securedto saiolfitree -end of the The free end of-the-:bracketi'is provided

screws

14, 14. The freeQendso ,the'shanks of the screwsy 14,14, project "a distance `into the eeeket 1,1;

bracket 6, by means of l epenneele, 17- The eenetrneteniand arrangement ofthe nap and .the free .enel nf vthe bracket Gris suchso as to form a vertical opening 20.7111 Wneh `is fitted. y.fen leneitnd.-

nnal aS Well Vvas for retaralnievementitnean- .terrnediatejsection of la shaft 21. 1

. ,The upperk end off the 2.1 kis fnetreally ,redneed andtted, rotatably, inte the socket 1,1, and has an'annular groovej22 adapted 'to receive" the free ends of the retaining screws 14, V14, Thenupperlen'dof vsaid reduced portion IisHprovided with a -ball seat 2-3 registering. with the ball seat12l inthe-screw `9.4 Said ball seats carry abear# j ing ball24, which is adaptedto-receive any end `thrust ,between ,the "Sferew 'V9 and the The retaining

screws

14, 14, are intended ,pto-.engage they groove22 and thereby lnor! e nially supportthe shari; .Qlfwhen ,that inein- V ,ber isnotbeing'supportedV by the dietablef'?,

c 25 `designates an operating wheelvrigidly `secured to the shaft 21` adjacent its upper end' and y*is adapted to .be engaged.bythe' 7 rotating the shaft i in either di rection.

, Extending laterally the shaftZl, adjacent itslower end, is van'openingfQt pron engage' threads v28"ot1 a `cross-bar 29,.the

-.100 vided with screw threads-27 adapted to" cross-barv29 being movable ,longitudinally adapted ,to screw up tiglyltlyagainstV oppositevsides of theshaft 21 to prevent said cross-bar from turning whenv the machine is either direction-by rotating it `in the A yproper directionpin theopening'f. f i s v .30 are nutson the cross-bar. 29which areV One end of the cross-bar 29 is diametrically reduced thereby forming an offset 31 and a bearing pintle 32, the latter disposed in aXial alinement with the cross-bar and provided at its free end withI threads 33 engaged by a nut 34.

35 designates a cutting disk having on its peripheryV an annular cutting edge 36 and a central opening 37 through which extends the pintle 32, the arrangement being such that the disk 35l may freely rotate upon said pintle, between the nut 34 and the offset 31.

Upon the cross-bar 29, on opposite sides of the shaft 21 from the disk 35, is disposed a Asleeve 38 having threads 39 engaging the threads 23, and an annular flange 40. The sleeve 33 may be moved either outwardly or inwardly upon the cross-bar 29 by rotating it in the properv direction.

41 is a jam-nut engaging the threads 28 and adapted to be screwed up tightly 'against the free end of the sleeve 38 to prevent said sleeve from Vturning upon the cross-bar 29.

Upon the sleeve 38, intermediate the flange 40 and the nut 41,V is rotatably'mounted a relier 43, the functions of which will hereinafter be fully described. Y

rlhe die table 7 is provided upon its upper side with two spaced apart ribs 44, which extend transversely relative to the table and carry set screws 45, which engage opposite 'sides of a die 46 seated on said table between the ribs 44. rThe width of said die 43 is less than the distance between the ribs, thereby permitting the die to be shifted upon the table'so that it may be brought into proper alinement with the shaft 21 which it underlies.

After the die 46 has been placed in proper position on the die table 7, the screws 45 are intended to be turned Vup until they bear equally tight against its sides. kBy loosening the screws 45,Y the die may be removed fromthe table 7 and another, die substituted. Y 1

Upon the upper or face side of the diev46 is cut a central conicaly recess 47, which during operation of the cutter, receives a conical projection 48 at the lower end of the shaft 21, which is intended to assist in alining the die relative to the shaft 21 andthe cutting disk 35 before the screws 44 are tightened. rllhe die 46 is further provided Yupon Yits upper side with annular grooves 49, in either of which grooves the disk may be made to travel when the cutter is inoperation.

lVhile the `device illustrated showsa die provided with two grooves, it is to be understood that the die is not limited to any particular number of grooves, and that, if

desired, it may be constructed with only one groove, or it may have more than two grooves.`

By loosening the nuts 30, the cross-bar 29 ytween the die and the disk 35.

Ymay be rotated to shift it longitudinally of V29 above the die 46 so as to permit the sheet metal intended to be cut to be inserted be- The wheel 10 and screw 9 are then rotated in the opposite direction to'lower the shaft 21 and its cross-bar 29, until the disk 35 engages the said sheet metal, when by rotating the wheel y 25 the shaftl 21 will be made to rotate in the 'at times cause said metal to buckle up, and

in order to prevent orv limit said upward buckling of the metal, l have provided the roller 43, which is intended to roll along on the metal as the shaft 21 revolves, or it may be so constructed and arranged as to normally travel a slight distance above the metal and to engage the same4 only when it bends or buckles up.

Having described my invention, what l claim and Vdesire to secure by Letters Patent, is Y 1. A rotary sheet metal cutter comprising a frame having a pair of spaced apart outstanding brackets disposed in the same vertical plane, a vertically disposed screw carried'by the upper one of said brackets, a vertically disposed shaft rotatably and slidably carriedV by the other of said brackets, said screw and shaft being disposed in axial alinement with eachother and having one end pivotally connected together, a screwthreaded cross-bar carried by the free end of said shaft and having its ends extending at substantially right angles from opposite sides of the shaft, saidV cross-bar movable longitudinally in either direction by rotating it relative to the shaft, nuts on said crossdisposed screw carried by the free end of the ment with said screw and having its upper.

end movably connected to the lower end thereof, said shaft being movable both longitudinally and rotatably relative to ,itsV

bracket, a screw threaded opening extending horizontally through the lower end of said shaft, a screw disposed in said opening vand having its free ends' projecting outwardly a distance from either side thereof, a cutting disk rotatably mounted on one end of said last named screw, and means coperating with said disk for cutting-circular openings in sheet metal.

In testimony whereof, I have hereunto set my hand this `1st day of January, 1920.

J FRED FRENGLE.