US651748A

US651748A - Spiral-die.

Info

Publication number: US651748A
Application number: US73281999A
Authority: US
Inventors: Henry B Dierdorff
Original assignee: JOSEPH A JEFFREY
Current assignee: JOSEPH A JEFFREY
Priority date: 1899-10-06
Filing date: 1899-10-06
Publication date: 1900-06-12
Anticipated expiration: 1917-06-12

Description

y No. 651,748. Patented lune 12, |900.

H. mEnnonFF.

SPIRAL DIE. (No Model.) I (Applicatin @leid Oct. 6,1899.) 3 sheetssheet I,-

Kn IWNNIM .IHIUIIUNNIUI h I LJ P J' 7 P D o A, i i /y o m 03 s #D Y f 0 I f 0 f 1 /22 l 7 Q Q l ZL'Q No. `65|.74a. PatentedY June l2, |900.L

H. mERuonFF. f

SPIBAL DIE.

(No Model.) 3 Sheets-Sheet 2.

www. mmlu ,Dief 0707 ff No. 65|,748. Patented lune I2, |900. H. B. DIERDDRFF.

SPIBL DIE.`

(Application med oct. 6, 1899.)

3 sheets-.sheet 3.

(no Model.)

A TTOH/VEY.

UNITED STATESv PATENT OFFICE.

HENRY B. DIERDORFF, OF COLUMBUS, OHIO, ASSIGNOR TO JOSEPH A. JEFFREY, OF SAMEy PLACE.

SPIRAL-DIE.

SPECIFICATION forming part of Letters Patent No; 651,748, dated June 1a, 1900.

Application inea october e, 1399. seria No. 732,819. f (remodel.)

To @ZZ whom t 11a/tty concern:

Be it known that I, HENRY B. DIERDOEEE, a citizen of the United States,` residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Spiral-Dies, of which the following is' a specication, reference being had therein to the accompanying drawings.

Figure l is a front elevation of a swaging or stamping mechanism embodying my improvements. Fig. 2 is a side elevation of the same. Fig. 3 is a detached view of part of the die-lifting device. Fig. 4 is a cross-section on the line x fr of Fig. l. Figs. 5, 6, and 7 show details. Fig. 8 shows the initial sheetmetal blank. Figs; 9, 10, and l1 illustrate the steps followed in shaping the blank before subjecting it toV the swaging or stamping machine. Fig. 12 illustrates the blank after it leaves the machine.

In the drawings the operative parts of the mechanism are shown as mounted upon a frame or bed. At the bottom of this frame there is a heavy base A, from which there eX- tend upward the standards B B, and these are joined at the top by the cross-bar B'. i The base A is preferably expanded at A to provide an enlarged horizontal table-like device at the center. Upon this is secured centrally the lower die member or matrix C, and above this is supported movably the upper die member D. The operative faces of these dies are so shaped as to describe or conform to the spiral or helical shape of the article to be pro-` duced.

The lower part of the operative face of theV lower die or matrix O colnmences at c and the projection or nose d is the lowest and the recessed end d is at the highest part. A comsultant being a spiral movement of each point of its operative surface corresponding to the spiral shape to be produced by it upon the sheet met-al. Itis guided in its vertical movement by means of the guide-rod E, which rises from and'is rigidly secured to the base A A',

there being a central verticalaperture in the upper die D to receive this guide. It is moved vertically in the construction illustrated by means of a rope or cable F and a power-shaft G. The rope can be connected to the die by any suitable device and extends upward from its connection to a Wheel or drum H on the drive-shaft G. This shaft is driven in any suitable way-.for instance, by wheel I and belt r -and rotates continuously. The rope F is taken once, twice, or more times around the Wheel or drum H, and its end is brought down to a point sufficiently near the bottom of the machine to permit it to be grasped by the operator, it preferablyhaving a handle, such as at f, attached at that end.

The die D,"as shown, has a" guiding and supporting arm or bar J secured to the upper' end of it and projecting therefrom upward to a suitable distance. The rope F can be attached directly to this, though I prefer to in: terpose a link or yoke K between them to insure flexibility. The upwardly-extending arm or bar J also serves as a means for guiding the die D in its rotating movements. For this purpose it is furnished with one or more helical, inclined, or spiral Iianges or splines L, extending from the top to the bottom on spiral lines. .-M indicates the parts (preferably antifriction-rollers) of the stationary guideway for the spiral flanges or splines L, said rollers or guides M being held by bars fm, secured to the upright parts B of the frame or bed. Vhen the die and its carrying-bar J are rising or falling, a rotary movement around the vertical axis is imparted to them by these last-described devices.' f

The verticallymoving' parts above described can be supported when desired as follows:

N are arms or wingsV extending out from the sides of the bar J.

O O are stops mounted in the upright parts B of the frame and adapted to slip into and out from the path of the arms N. Springs o IOO uponttie -beveledfaces o? push the stop3bars 'Y O outward and move up beyond them. As soon as said arms N have reached points above the stops O the springs o immediately thrust the latter to the normal position, and

the bars N are prevented from descending and heldin thisuppermost position; i but the operator can when he desires instantly release them by withdrawing. the stops O `through the following device controlled by his foot.

P P are bell-levers pivoted` to the main` frameandalso pivoted to one of the stops O,

A Q Qarelinksvpivoted to the levers P andA atzthein lower ends connected to the pitmen R R; The latter are in turn pivoted to arms s of the rock-shafts ofthe treadle device S,f

mounted near the bottom ofthe frame.

T indicates the original blank of sheet` metal. From the center of this there is punchedor cutout adisk of metal to leave anfaperturet, and there is also .cut therein therslit att, the-blank after it is cut being. indicated by- T'. The blanks are then heated, andzafterheating their edges adjacent to the slit-,15' are opened,.as shown in Fig. 1l, to provide apassage-way for the central guide-stem Eysofthat :the-blankcan be placed upon the spiralsurface of the matrix C. As soon as it' has beenfso placed lthe operator presses his foot` upon the' treadle atS and then, through the pit'manfR, the links Q,- and the bell-levers P, draws out the stops O,- and the die 4o gravity.

. faces'ofv the dies.:

D@ instantly descends under the .actionV of= It-impinges upon theblankfl" and presses it; to lconform to the shape of the surf The die D-as itdescends is@ compelled bythe splines L and the rollersorf` guides Mzto rotate as well as descend,

and=the nose-or projection'd of the die D isj c' enabled to-pass; beyond the vertical lineof the Anose c'of: the stationary matrix, and'consequentlyy theresnlting-,shape ofl-the sheet metall-is'- such thati one end; thereof l slightly: overlaps .the other, as shown in Fig. 12. This overlapping:` permits riveting one 'section-of;

thefspiraltoanother. A't the same time that theoperatorr'isthus allowingA they die to fall hef grasp's the rope F or `its handle f, `and should v the metall require one or more supplemental'rblows they are caused by his exerting slight downward pull onzthe rope Fand then releasing it, as thedownward pull increasesthe friction =of the/rope upon theI revolving drum; and'gth'isiis instantly translated into an elevation of the die D, and upon his releasingn the-rope from the strainv the die drops. Heis enabled in this way to give alargefnumberof rapid blowsin a brief period of time. As soon asethevsheettme-t-alis seentobe inthe proper` shapeiheIdraWs-fupon-therope1F continuouslylong, enough to cause ittolift. the partsD and J upward andunt vil the arms N forcethe stops O and rest upon them, after which the piece of metal that has been shaped is removed and another blank is applied.

At U thereis a device for. bending `the ends `'ofithe blanks T" from the shape idF-ig. 10 to that -nFig 1l. At V there are retaining or guiding devices secured to the dies to prevent the-blanks from escaping from the position in which they shouldy be held while forming. The die D is detachably secured to its supl,port or carrierJ, and similarly the `lower die or matrix C isreinovably secnred to thebase or bed of the trame. Each mechanism is providedwith a series of two or more pairs of dies of difterentdiameters to correspond Awith' the dierent sizes of Vspiral'dblanksthatareto be formedtherewith.

By having the guide parts L and Mfexternaltothe die and to its support-orccarrierl can cause itto be rotated :withfa'greater Vleverage and more power than it` the spiralgulde were in the interiorof the dieoriholder. With v the parts arranged as shown the central guide vE may be a simple cylindrical rodi or; stem tted intov an easily-boredl socket inthe-die C and corresponding passage-way'bored'- lthe die -D and its holderl JL.

Of course it will` be.understoodthat'there canbe modifications in several respectsw-ithl out' departing4 from thefesscn'tialf features 4,ofthe mechanism: The'gu'idingzparts f canbe inverted, .the rollers orequivalentsbeing put upon the die orholdergandthe feathersaon IOO splines or equivalent groovesl can' beprovided-on the `frame. p

What I claim isl. Inamachine forfforming sheet-metal spirals, a pair ofgdies each `havinga spiral operative face; andofwhich one isimovable longitudinally'toward and fromftheot'h'er,and`

also movable-around itslongitudinal axis,snbstantially as setfrth.-

` Y 2; In Va machineforforming spiralsections of' sheet. 'meta-l; al pair ofI dies, formed with' spirally-sha'ped` operative 'facesgfand' one ofy which is movable toward'andfromlthe other, -and one of which isl rotatable around their common axis, substantially assetfrthl` Y 3..In a machine for forming sheet-,metal Ispirals, aY die having a'spiralffaceiextending aroundacentralfaxis, andof y aalength greater than one :com plete -turnzof thespiralaaround spirals, a. die -havingan'operativespiralface, l Vanzopposing die also havinganoperative spi;

IIC

ral face', and a guide or stop to prevent the outward escaping of the blanks from said spiral face, substantially as set forth.

6. The combination, with a die having a spiral operative face, of an opposing die having a spiral operative face, means for moving one of said dies toward and from the other, means for turning one of said dies, and a friction-controlled connecting device for throwing the die mechanism into and out of operation, substantially as set forth.

7. In a machine forforming spiral metal sheets, a pair of dies, each having a spiral operative face,and of which one is movable toward and from the other, in combination with an interior guide for said die situated at its axis, and an exterior rotationcausing guide engaging therewith, substantially as set forth.

8. In a machine for shaping sheet metal a rotating and longitudinally-moving die, in combination with a spirally-arranged guide engaging with the die and situated outside thereof, substantially as set forth.

9. In a machine for shaping sheet metal a rotating and lon gitudinally-movin g die, a spirally-arranged guide feather or spline connected to the die and external thereof and a stationary guideway engaging with said guide, substantially as set forth.

10. In a machine for shaping sheet metal, a rotating and longitudinally-moving die, and a similarly-moving die-support, to which the die is detachably secured, a spirally-arranged guide feather or spline externally connected to the die-support, and a positively-acting stop for the die-support to prevent its downward movement, substantially as set forth.

1l. In a machine for shaping sheet metal the combination of a lower die or matrix, an upper rotating and longitudinally-moving die, a similarly-moving support for the die, a centrally-arranged guide for the movable die, an externally-arranged spiral guide for the mov able die, and a positive stop for holding the movable die against movement, substantially as set forth.

12. The combination of the frame, the die or matrix C removably fastened to the frame, the guide E at the center of said die, the rotating and longitudinally-moving die D, the support J for the die D detachably connected thereto, and iitted to the said guide E, the external spirally-arrang'ed guide, and the friction-controlled mechanism for moving the die E, substantially as set forth.

13. The combination of a die having a spiral operative face, an opposing die having a spiral operative face, means for moving one of said dies longitudinally, and means for turning one of said dies around a longitudinal axis, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY B. DIERDORFF.

Vitnesses:

A. D. SHAW, F. E. CoLToN.