Патент USA US2404245код для вставки
July 16, 1946. A. C. OLSEN n >2,404,245 n ' - FASTENING DEVICE Filed' Dec. 8, 1944 - @BY @äh-z' -l ATTORNEY Patented July 16, 1946 2,404,245 UMTED: STATES; PATENT or17T-irren:2,404,245 EASTENING DEVIQE. Anders C'. Olsen, 'Forest Hills, N. Y; Annliootienlëeoombor 8, 1344, Seriol.l\ï9.=` 567,245.. 4» Claims. 1 (C1. Sai-b1) This invention relates toA fastening devices of the driven class. Qne adaptationof'the invention, or other nail‘dike fasteners of the driven class, the fastening device o_f~thepresentlinventionis Eig', formed 8. from The, metal a flat nietal strip .or strip blank, orblank designated shown,by is in building construction and', more particun larly, for securing flexible-type, Weatherproof covering materials, such asroofing .shingles> and the like, to sheathing or other supporting sur faces of the. type4 characterized by a low de gree of naileholding povven. My invention is particularly concerned with the provision of a fastening device for use in 10W _ the reference numeral' i0, may be cut-_ fronfiA a` cost building construction wherein flexible-type, weatherproof roofing or sidingisto be secured to sheathing of gypsumboard, fiber insulation >board thctriansiilnr niece, M'gdeiined thereby. The. thus or other similar types, of protectiveY sheathing. fold line. L5: extending». from.. the. Cntoiit. 'atr i2.; to. the. intersectionnoint. indicated. at. 1,6; t0' .foltxn generally possessing lownail-holding character istics. An object ofv the invention istoprovide a fas- ' continuonsv ribbon „intoA a' substantially rectangn lar. ooniig..trationY as Shown’. and.. Stamped.' out. or otherwise `out. along.. the converging diagpnoi lines I'I;- and. L3, n_geeting` as at lil,` or ’ifW desiredi Connected bv o.. Snort horizontal out, to.v remove. Stamped.; Strip or. blank, l0. may be. then. folded, longitudinal'lv snbßtantiallv alone the median. 15 the. inirtanosed but". separable legs.- comprising. the Shankt portion.v of tneiastener». Thel strin toning device for that purpose. which. will be or. blank .lll is» also. bent, oriolded., Substantially of simple,y inexpensive, design> and, will possess along. the lines lli and. i8.. inP a. direction.. toward. adequate holding power when driveninto sheath 2,0 thei shank., ondv reversely alone.. the lines, liV and'. ing materialsy of the> above, described character. Zinwlierebv to form. the. heed.. portion. ottho .fas It is also anÍ objectof the invention to, provide a fastener which». will be. highly efhcient in,y 5.6.-. curing flexible` and. frangible covering materials. to sheathing material ofÀ the character described», " and which is designed» to. off-enmaxìmumresiste ance tothe tearing looseÍ of. suchcoveringvmaj tener Ivins. in. plane. whinn. extends/Substanz portion.. tially at. right angles, to.` ther plane. of. the r . EO Ul in, thus forming thefastenins. devine, tnetrî: angular web or hingenortions 2 L andlî, rennen# tively defined, hv tin=«,-fol.dr o1"L bendlines, lle-.LSL and Iii-20, aradonblesi, beneath, the head non. tion. on either side of.- the. Shonlsasindìfëated. in storms. 30 Figs.. 1-5.; andthevserveto reinioroe. thehead A further object. of the inventionv is to provide portion.. Withv this. arrangement, the, .outer a fasteningY device. of.. the Character indicated, straight.. edges 1?.. and.' 2.4. of. the. blank. form. the. which can be` easilyV handled and readily ap inner edgesoi the-separable legs at a linear-posi: plied.. tion wllionissubstantiailv centrallyY located. ' 1th. Other objects andv features ofthe invention 3.5 respect. to, the, distanoe along the head. nortion willV be more clearly apparent from thev detailed betweeno- the. pointY it and the.. opposite straight, description which is to,fol1ow and from the ac terial under the stressof severe weather condi~V tions involving hignwinds, hail or driving, rain edgß. 2.5. aniiithnsnraotioallv coincident, Witiithe » companying, drawing in which: . _ » Figs. l and' 2 are. opposite> perspective viewsof a fastening. deviceembodving the present. inven-v 40. Referring noW more particularly toFigs. 1^ and 2, the. reference. numeral.. 30.. designates, the. fas. tion; Fig. 3 isf toning vertical axisnf. the=head~nortion-~- enlarged elevation View of` theias. device... , - - Figs. 4 and 5' are right and left hand views, târlìng, device of-_ the-present inventionwhich. is formed from. flotl` metal» Strip.- l0, as above, der, scribed.. As shown, the. fastener comprises a nailf 45 likeÁ device having, a. head. portion` 35 and` a .shank`r respectively, ofthe device shownâ in Fig. 3: portion 4.9., integral; therewith, As. previously.` inf Fig. t" is a fragmentary View iliustrotinsthe dicatedthe shanlcportionliesoin. a plane extend-~. action of' the fastener in one,V application of; the ing substantially marient-.angie to theheadnor present invention; Y tionandoomnrises a pair of separablelegs #Land Fig.. 7 is. a view. similar to. Eig, .6.. showing. the. 42 toeaon other along. theflongitudinal device. of the, presentinvention. in. its.. fnllv driven 50 foldconnected. 45 and to the head portionA 3,5I by the Webs nositioniand ' 2l. and.. 2.2 folded underneath thev headA portion Fig. 8. vis, a plan View of- the .stripor blank., from» and in, contact therewith, „ . ` which- thev device of, the », present invention, `is As bestshown inlî‘igs,~` Zand 3„.thß'f identically formed, with cut, and" folddinesf. indicated. thereon, beveled. legs< 4_I. and. 4.2l taper from the lower ,end> As distinguished from; thel'ordinary. wire nails 55 of the.longitudinal..fold.45E along their respectiveV » 2,404,245 3 . of the thus-*formed fastener .will preferably be, , sides Il and I3 to their respective pointed ends i 41 and 48. about %" long, measured from Thus, the pointed ends Y41 and 48 ' Í will be substantially centrally located relative to ` the perimeter 0f the head portion 35. , ends 41 and 48 are dìvergently bent from a point i § along the shank 40 indicated by the numeral , ` 49 which is preferablyat approximately the mid point between the lower end ofthe fold 45 Vand Í the pointed ends 41, 48. ï , , In utilizing the above described fastener to Vse cure, for example, plies of ñexible roofing mate- ‘y’ , the lower end of i - fold 45 to the pointed ends, and bent outwardly beginning at about ,-"e" up from the pointed ends so that the latter are spaced apart about 1/8”, for this gauge metal. This initial spread ofthe pointed ends is an important feature of the in vention as it enablesV the separable legs to be easily' forced apart, when the fastener is driven into thesheathing, to achieve the optimum in holding power with respect to the sheathing ma ' _ terial'into which the fastener is driven. ' rialto a roof deck comprising ñreproof gypsumwNv . In order to evaluate the holding power of my ï board, as illustrated in Figs. 6 and '7, the fastener Í- Y fasteners for comparison purposes, I used them f is handled in the same manner as an ordinary` -to fasten, inthe usual manner, two superposed Y ' wire roofing nail and may be driven into the roof layers of mineral surfaced roofing (weighing 90 ing and underlying sheathing with the Yaid Vofa` ` pounds pervlûö Ysquare feet) to a gypsum roof hammer. . The pointed ends 41'and 48 ofA the deck'. The ends of the roofing strips were pulled until the roofing ripped around the head of one of the fasteners.` After'a number of tests, it was foundthat an average of about`45 poundswas separable, beveled legs 4| and 42 will, of course;y readilypierce the flexiblev roofing plies 50 and 5| andk also pierce the frangible gypsum sheathing 20 V52 lying underneath. As the fastener shank is required to rip the roofing, or'pull the fastener from the gypsum board. By way of comparison,. driveninto the sheathingthe already divergent 1y >:bent legs 4I and 42 will continue to spread ` the ordinary 'M35' -galvanizedV rooñng~ nail (3/8” along >divergent paths depicted in Fig. 6, until¿ , diameter head) required only slightly more than they` ‘assume arpositionY approximately as indi-1 le pounds pulling force to remove it fro-m the Y cated in Eig. '1.V When the fastener is driven same vconstruction of two layers of 90 pound min eral surfaced roofing _secured to gypsum roof ‘fhomemso thaty the head 35fbears down against the outer ply 50 of the overlapped plies ofroofing,` . the diverging coursestaken by the separating legs, , . will resemble somewhat the illustration in Fig. '7.l With the legs of the Áfastener shank'thus exey tending in arcuately divergentpaths within the VsheathingA board 52,' it would require a substan-` tially greaterforce to render the fastener ineffec tive in securely holding the roof covering mate-> ' ' , 'y VThe enhanced holding power obtained rbynem ploying Ythe fastenersr of ' the- present invention even Vexceeds the above-stated'average of about 40 pounds required to free twohlayers of 90 pound ,A roofing> nailed .to a wood roof deck with> standard ’7/3” roofing nails. Then, too, these improved rial 50 and 5|.to a roof deck than wouldV be re--`v quired fin the -case of an ordinary wire roofing nail, Yor even one that was providedfwith abarbed fasteners-can bev handled like nails, require no _ shank, 4and especially'rwhen the roof deck is con sign as to permit rapid, large scale production at a cost which would not prohibit -their use ínplace more careto their> application than the ordinary nails, since they consistently drive well without bending or twisting, and are of such simple de f structed with gypsum or fiber insulation board or some such material that is characteristically poor.’ » in nail-holding properties. Infact, the present t invention provides ‘a fastener for use with low nail-holding power materials that will require a ' pulling force about on a part with the force re -quired to remove Va roofing nail from a roofydeck » constructed vwith a material having high nail-1holding characteristics, such as wood. , , 'Another important factor to be considered in designing .fasteners thati will be efficient in se weather conditionsl involving high winds, hail or driving rainstorms.V „Under such conditions, there` is Va tendency -for the fieXible roofing to'beY lifted up against theheads of the nails orY other type ` " vfasteners .holding the roofing in place and, unless these heads are, each wide enough to provide a to alsupporting base possessing a degree of nail holding `power ranging from the low nail Vholding power of materials on the'order of in sulation boardv to the high nail-holding power of wood, and may also be used for securing sheet material to wood in building construction. reasonable amount of bearing surface, the roofing ' ofttimes will be torn and ripped away from the fastener head. >By forming the fastener of the Present invention from a metal strip of any de sired ïwidth', therermay be provided a fastener , . head which has suñicient .bearing surface to avoid the Vaforementioned danger. In the case of Ythe ordinary wire nail, or flat-headed wire staple, on the other hand, the sizeof the head is necessarily limited to the largest >diameter of f wire _used in ‘ ‘ .y ' ` thelconstruction ofrbuildings having insulated., ñreproof'and,weatherproof roofs and side walls where it is desired to employ relatively inexpen sive Vflexible orgenerally frangiblertype covering material ,inconjunction with sheathing or roof decking of the character possessing low nail yholding power. tener as being adapted for use in the‘aforede scribed type of Vbuilding construction, it willbe understood that this form of fastener is also'ca pable of being enicientlyV used in vother type of,v construction, such as furniture, vehicles, toys'or the like,'where sheet material is vto be secured deck is the stressY and strain imposed on the roof covering and the fasteners therefor -by severe making the fastener. ' of ordinary wire nails. ' Finally, the simple, im- ` provedvfastener ofthe present invention enables While I havev particularly described »my fas v curing a'fiexible type roofing material to a roof ` deck. ` one practical embodiment ofmy invention, ' I Ymay form a fastener'of the aboveA described character from Yan V18, gauge flat strip Vof hot-. I claim: ' Y " ' 1.'.A fastening device fabricated from a'fiatV Y metal strip bent at ‘one end to provide a head portioncand folded longitudinally to yprovide a shank portion lying in a planeat a right angle to the plane of thehead portion, said shank por tion comprising'legs- juxtaposed for a substantial distance Yalong their length, said legs being con- « nected togetherl for a distance along the longi-4 tudinal fold and terminating' in divergently-bent points whereby sai'dV legs are adaptedt'o diverge? rolled, annealed sheetsteelhaVíng dimenSîOns Of ,~ f» »say 1/2" r11/rf. Inthis instanee;thebeve1ed1egs 'i5 when forced into fastening position. ,5. 2,404,245 2`. A fastening device fabricated from a flat metal strip bent at one end to provide a head p_or» t tion and folded longitudinally to provide a shank portion lying in a plane at a right angle to the plane of the head portion, said shank portion comprising legs connected together for a distance along the longitudinal fold, said legs having pointed ends and being tapered between said ` bent pointed ends and being tapered between said connection and said pointed ends and being adapted to diverge when the fastening device is driven, said pointed ends being centrally located with respect to the head portion. ` 4. A fastening device adapted to be driven, said device being fabricated from a flat metal strip bent at one end to provide a head portion and connection and said pointed ends and being folded longitudinally to provide a shank portion adapted -to diverge when forced into fastening 10 lying in a plane> at a right angle t0 the plane of position. . the head portion, said shank portion Acomprising 3. A fastening device adapted to be driven, said legs joined together and to the head portion along .device being fabricated from a iiat metal strip the fold, said legs being beveled diagonally from bent at one end to provide a head portion and the end of the fold to divergently-bent pointed folded longitudinally to provide a shank portion 15 ends and adapted to diverge when the fastening lying in a plane at a right angle to the plane of device is driven, said pointed ends lying in a plane the head portion, said shank portion comprising approximately common to the plane of the longi legs connected together for a distance along the tudinal axis of the head portion. , longitudinal fold, said legs having divergently ANDERS C. OLSEN.