US1544344A - Art of making corrugated fasteners - Google Patents

Description

June 30, 192s.

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v. RA'GONA ART OF MAKING CORRUGATED FASTENERS S'Sheets-Sheet 2 June 30, 1925.

Filed Sept. 29. 1921 x *S my O "QI qb.. N

v25 Sheets-Sheet 5 V.RAGONA ART OF MAKING CORRUGATED FASTENERS Filed Sept. 29 3921 June 30,1925.

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Patented June 30, 1925.

VINCENT nAGoNA; or `New. YORIL'NY., assreENoa 'rpo vmeer MANUFACTURING or BROGKLYNNEW'YORK,Aconronsirronior NEW' YORK,

earaer :ART or MAKING ccnriUeaTis-ro .rasmENna-s.

application ined september 29, i921. serial, No. 504,049.'

7'0 all whom t may concern.'

Be it known tliatl, irNcicNr RAGONA, a citizen of the UnitedV States, residing at the city of New'York, borough of Brooklyn, county of Kings, and State of New York, have invented a certainnew and'usef'ulArtof Making CorrugatedFasteners, of which the following is a specification.

This invention pertains to the art of inaking corrugated fasteners, the object being' to so fabricate the metal'stock as to impart the desired formationthereto without ydrznving the temper of said ystock by heating `the metal, while at the'same'tinie facilitatingtlie necessary operations so as to produce the character ofl fastener desired in an economical manner. i'

In the art of making corrugated fasteners it is desirableto avoid grinding "the metal at any stage in theA fabrication of the metal for the reason tliatvthe frictional contact of the' metal stock with the grinding `sui'- face results in an undesirable-heating of theA ymetal, with a consequenttendencyto draw the temper of lthe metal to such an extent as to renderit too soft, and in. addition thereto, such grinding iop'eration is relativelyslow, and it -sets free a certain amount of dust which isseri'ously objectionable in the workroom. y j

According `to the present invention, the metal stock is treated along the resulting drivingedgeso as to produce reversed bevels thereon `by a'shaving or1 paring operation,`

the utility of whicliis tosharpen the driving edge without drawing the temper of the 1netal; and should the shaved stock be utilized subsequently in the production of saw `tooth fasteners or divergent fasteners, ythe preliminary removal of the 'metal-by the shaving or paring process reducesthe quantity of metal i'equired'tofbe 'cut away for-the production of the-saw teeth on the Idriving edge of the fastener, whereby the production f lof the fasteners is facilitated and economy of manufacture is attained.

'In practically carrying out the shaving operation I employ means for directing the metal stock in a path intermediate a plurality of knives, the latter -being positioned. at opposite sides of 'said vpath and Abeing inclined to thejline ofv feed sovas to present the cutting edges for, contact Vwith the respectiveilateralfaces lofthe stock adjacent one edge thereof. `Y Said 'knives' act to pare for shave vtheimetal from the stockwith ay continuous operation vso that thiny narrow ribbons or shavings of metal `aie`pared'of the stock and dischargedout off the 'path of feed, whereby the stock is beveled Vonfthe opposite lfaces and such bevels are wreversi'ely inclined so as to converge toward each other', -iesulting'by the conjoint acti'onfof theknives 'in a sharpened edge on the -nietal. stock`.

Said knives are mounted in heads'fwhi'ch lin turn are 'fitted for lthe'requiredadjust- -at the angles required ffor'sh'aving the '.metal from the stock, andthe!knifelcarryingheads n may be raised or lowered ywithrespect to the Y rockable carriers inv 'order to present? the PCE* l knives tov tliee'dge portion. ofthe "metal 'v stock, suoliv adjustment being desirable for 'the required action of thefknilves upon ferent widths of the'metalstock.` j

l Other functions and advantages the invention will appear' from 'the '.following description takenin connection fwitli the' accompanying drawings, 'wherein- Figure l is a diagrammatic view"illusltrat-ingtliestages of operations followediii the production of corrugated saw toothfasten'ers` according to `.this invention c l y Figure2 is an enlarged viewiinfplan :of the stock shaying mechanism.

Figures 2a and 2 areicrossseotions on the lines Qa-"Va and .2b-2b, respectively, of'Figure VQillustrating the metaltstockfprior to the shaving' operation and subsequentlythereto.

Figure 3 is a side elevation of the-stockknives, the adjustable yli'ea'd 'tl'ier'e'foi',`and

the rockable `carrier lfor said head.v j

Figures 6, `7 and `8 are views 'infsection partly 1nl elevation L illustrating the 'succes- V'sivesteps forthepioduct'ion of saw tooth fasteners 'from the-'shavedniet-al-y stock. j

- Figures 9, l0 and `1l areviews "ofthe/dif 95 i shaving mechanism lookingtoward the right Y ferenttypes ,of fasteners adapted `to be pro-V duced from 'the shaved lmetal stock. Y The metal 'stock A' isa relatively narrow band ofltempered steel of the required gage and width, indefinite as toilengtli, and Vcon-` tained in a coil oi' reel a, see Figuiesland 2, `mounted Vin oiadjacenta`V table B ofthe shaving mechanism. Y

Y Said table is provided with a guide chan?` ,nel c bounded by channel-,forming 'members C C, which ineinbersai'e shown` as plates Y positioned in parallel'ielatioii and fixidlyY attached to the table. The members Vor plates `Vextend lengthwise of' ther table for ,directing the metal stock in a predetermined path, and theyoperate to retain said stock f "in` the` po'sition required for the shaving actionfofthe knives D E, the latter being mounted for 'their'cutting edges tobe presented at thenecessary angles into/contactwithftheicmetal stock on theopposite sidesv vvor[faces,thereof andadjacent thatedge of ithefstock4whichv constitutes the drivingor penetrating edge "of" the fasteners subsequently produced.l the guide channel c .suitable means, the 4feed means being :depicted in Figure'l as a'yset'of co-operating rolls F operating on I s iaidstock to impart -the feed mot-ion thereto '-,andftoffcorrugate thestockfinv a well known manner, but o twiously the means for feeding A the metal stock niay be changed l.asy desired.

` ColoperfatingV with the; tableflr are stock guides f positioned in, alineincnt withthe channel. c and operating to-diiect the stock 'to Said channel als"` itis drawn loff the reel. a

Divided with wipers for Contact with the "Vandto directthe stock afterV it passes out of inetalstockfo'r removing therefronidust or `dirtadliering to the'siirfa'ceyofthe metal.

TheknivesDE are positionedatfopposite sides oftheguide channel, and are inclined relatively thereto, whereby said knives are presented for contact with Vtherespective vsides or facesof said stock adjacent the edge Y thereof. i The Vknives D E are lpositioned one in 'therear ofthe other, and said knives are-` ,inclined injopposite d1rections one to the other, one'knif-e D being inclined in one direction vwith"respect to the plane' of the guide channel o, whereas the o'therknife E "is inclined in an oppositedirection `with `ref vver'ence to said plane .of the guide channel, see FigureQ. '60

- As shown more clearly in'Figures 2' to A5 inclusive, Aeach knife is an elongated blade "vvitli` a cutting edge at the end adjacent the `'channelguide, said knife ,being fittedin an .0 enng d of a head shown as. afblock Gf tained xedly in place bythe carriers, 'the whereby "the vknife is adapted -to be held vthe purposes of a Vsaid spindle. i n n.

There are two head blocks G, and two L Vcarriers H, one for each of the two ki'iive'svv I D E, and these cai-ricreare positionedupon he' metal stock is fed continuously with-Y fixidly in position by fa bindingl screw d sov i as to permit the desiredadjustment: of the y knife by' moving it in -a longitudinal direcl tion'. The head block is fitted'withinfa suitable 'guideway h offa rockable carrier lH, one form of said guideway vand the .form of the head block beingisliown in AFigure 5; the 7 guideway operating to'retain the head block i from rotative movemeiitiwhile permittingthe head' block and the knife to be adjusted in a vertical direction, for'rwliich: purpose af ScreW'spiDdle I i's-employed. The sci-ewV Y yspindle has' a. swiveled connection, at z' with the carrier H and athreaded connection with the head block, see'Fig'ure 4, said spindle eXteiidin` upwardly from thecai'rier and vbeingp-rovi ed with a cross pini serving handle for readily turning' the tableBat opposite sidesof thechann'el guide for the metalv stock. Each carrieris `90Y shown f as having an arm h attached pivotally 'to the table by anarbor h2, thelatter serving l `.as the axis of movement for the carrier so as to make provision foi` movement of the4 car- V'rier kandtliehead block with the knife rela-V tivelyv t0 the channel guide, as a result :of

whicheach knife may be shifted'wi'th respect tothe metal stockswhereby ,thefknife acts tocut orshave the metal stocka't a definite. angle, whereas 'the adjustment ofthe knife longitudinally with referenceftfthe head. fblock regulates -the Vdepth` of the-fout! by the s knife into theA metal stock.- Each pivoted Acarrier is held fixedly, inposit'ion byfsuitable means,V shown as-screws Jv J", one of'which finds a threaded bearinginthe armh 'of the carrier, `whereas lthe other fsci'e'w is sup-` portedjin a post extendingfupwardly from thel table. It is apparent the screw J Y may be slackened and screwJradju'sted to shift the carrierand the lknifefaftei jvliich'the vkscrew J is tightened agai'ns-t-onejof theehan-V 'nel plates ,"fand VJvll is tightened against the y .Y arm of the carrierforjfiXedly"retaining'the *knife in the requiredpositionV for cuttingV a shaving from the surface of,-theginetal stock. A` g 1 The plates"C Cbounding the channel knivesD Eto act upontheinetalf stock;

.guide are cutaway orslottedatifor vthe i flat in cross section 'with parallelsurfaces,

andl thisstock is `ilrawn b the action of the feedand corrugating ro lsfF throughthe Wipers'of. the guides ff` and the channelv i i guide n', thus vfeeding the metal -stockfwith respect to the knives D VSaid knives yare positionedforthe cuttingedges thereof to.

shave or through `parethemetal stock-"fas it ,is fed i t e "guide o, said. knives being re- Ihead 'blocks and the screws. -The knives are set to cut away the metal in directions inclined to the faces of the stock, the effect being to cut bevels a a? on the faces ofthe stock, as shown in Figure 2b, which -bevels are reversed to each otli-er and converge so as to result in a sharpened edge a3 at the penetrating or driving edge of the` resulting fastener,

It will be noted that the Vmetal stock is sha-ifed by the knives to produce the reversed bevels and the sharpened edge thereon while t-he stock is in aA flat condition, and prior to the operation of the corrugating rollsF upon said stock, sai-d rolls operating to produce traniferse criinps in the metal so as to convert thek fiat metal stock into a length of corrugated metal.

The metal stock sharpened on one edge by the shaving or paring process and crimped by the action of the cofrrugating rolls is used for the production of plain edge corrugated fasteners 'K of the form shown in'Figure 9, it only .being necessary to cut the metal into pieces of suitable length after performing the shaving operation and the corrugatin'g operation there-on, suitable means being providedl for cutting the shaved and corrugated stock transversely and at proper intervals.

T he metal stock with its edge shaved and corrugated may, however, be further manipulated to produce on the shaved edge thereof a desired saw tooth formation so as to result in the production of saw tooth corrugated fasteners L shown in Figure 10. To this end, the metal stock is conducted from the corrugating rolls F of Figure 1 to the sivaging die M of Figures 1 and 6 and to the cutting dies N O of Figures l, 7 and 8. After passing the corrugating rolls F the corrugated metal with the shaved edge is fed by a roll P within a channel g ofthe table. Q, and said stock pass-es first beneath the sivaging die M of Figure 6, the operation of which is to swage the corrugated metal below the sharpened edge @3 so as to produce the bevels m 11, for the saw teeth to be subsequently produced by the dies N O. As the metal stock passes, with an intermittent feed motion, to the dies N O, said stock is first inclined in one direction and then in an opposite direction, as shown in Figures 7 and 8. The dies N O are each formed with a corrugated face, and said dies act upon the sivagedV metal m n of the stock in a manner to cnt out the metal and produce on the edge of the corrugated stock certain saw teeth with bevels in the convex fac-es of the corrugations so as to result ultimately in a saw tooth formation with a continuous, or substantially continuous, cutting edge. In addition to cutting out the metal for the formation of saw teeth, the dies (both swaging and cutting) so act upon the metal at the driving edge astro position the points of thesaivfteeth in the plane of the lmedial line of thev corrugated metal,l thus producing fasteners'wliich drive without deflectionv into the wood, either' with the gra-in or across the grain of; the material.

The means herein shown and' describedas dies -M, N, C, for producing the saw tooth formation upon the driving edge-of thecorrugated metal stock are analogous to the mechanism for the purpose disclosed 1n United Sta-tes Patent No. 1,210,416 granted `January 2, 1917, to Cary and Bran-d, to

'J une 4,1921, said die rollers being operable `uponthe beveled edge iat'stock to. impart the-reto the divergent corrugations s sf with the flat-'interniediate web t shown in-Fi'gure 11, subsequent to which the corrugated sections of the metal are' acted on by swagfing and cutting dies similar to dies M, N, O, and so organized that said dies sivage and cut out the corrugated metal as to result in the saw teeth t on the driving edge, it being apparent that the continuous length of the prepared metal stock is cut transversely at proper intervals for the production of the individual divergent fasteners S' shown in Figure 11.

Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent is:

1. In a machineA of the class described, means for directing metal stock in a definite path, a plurality of rockable knife carriers positioned at the respective sides of the path of feed of said metal stock, a plurality of knife blocks, one for each carrier, a plurality of stationary knives, one for each knife block, said knives being positioned in oppositely inclined relation to the path of feed and at the respective sides thereof, and means for separately adjusting the knife blocks and the knives in paths parallel to the faces of the metal stock, whereby the knives are adapted for operation upon the face portions of metal stock adapted tobe fed within the stock directing means.

2. In a machine of the class described, means for directing metal stock in a definite path, a plurality of knife carriers positioned at the respective sides of the path 0f stock feed, a plurality of knife-blocks mounted in said knife carriers forI slidable movement with respect thereto, one knife block to each knifev carrier, a plurality of sta- Cil tionary knives, one foreach knife block, said stationary' knives being positioned at the respective sides of 'the pathV of stock feedland inclined'th'ereto, and means for raising and lowering vthe knife' blocks and the stationary knives in paths paralleltc the plane of the stock guide. l l

In afmachine of 'the' class described, a guide channel, means for feeding metal stock lwithin said guide channel, a plurality of knife carriers positioned at opposite sides of the guide channel, a head block mounted in each knife cariiena knife in each head block, and means for shifting the head block withV respect to the carrier. Y

4. In a machine of the class described, a

guide channel, means forV feeding metal stock within said guidechannel, a plurality of knife carriers positioned at the respective sides ofthe guide channel and mounted for pivotalmovement,Y means for fixedly retaining vsaid knife carrier in position relativelyt'o the guide channel, and a shaving knife supported in each knife carrier .forl

adjustment therewith;v Y f 5; Ina machine-l of the class described,"a guide channel, meansfor feedinginetal stock Ifwithin said guide vchannel, a plurality of ,knife 'carriers positioned at opposite sides of the guide channel, a head block mounted in each knife carrier, a yknife in each h'ead block,

means for retaining the knife` in adjusted position relatively to the head-block, andV gating the metal stock subsequently to the Y shaving thereof, and means in activeti-elat-ion tothe sharpened edge of the corrugatedV stock for cutting the said edge to produce'a saw tooth formation thereon; c

v 7. Ina'machine of the class describecka guide channel', means for feeding. metal stock therein, a plurality of knife carriers posi,- tioned adjacent the guide channel, a plu'- rality of head blocks, one foreach knife cari'ier, a knife mounted in ,each head block, j

andmeans whereby Vthe knife is adapted to be raised and lovveredrelatively to the guide channel. Y j. j Y. I

VIn testimony whereof I have heijeto signed my name this 28th day of Septemben'lQQl.

,Y VINCENT iii-teoria.:k Y

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