Патент USA US2124249код для вставки
¿July 19, 193s. _ - - ` ¿ "|. @www . LOCKING WASHER rjoR NUTS 2,124,249 y ' Fiied_Aug'. 15, -1955 W 'f „ WMI ` 1111 l, i a MÍ / ¿Hkz/acci Perera-¿July 19, 193s . i - 'I ~ « f 2,124,249‘ liJN-rritp STATES .ini'i‘iarifi‘ll ori-‘ica ` Locxnva. _vëîâäîi‘iîtròn NUTS Igino Guiduccl, Tl‘ivoli, Italy . Application August 1s, i935, serioLNo. sacas rultoiy october' 11, 1934 = z ‘ (ci. isi-_ain4 The present linvention relates to locking wash- . y a relatively» gentle inclination slopinc in the ers for nuts, and its object is to provide'a double olOokWiBe dlreßiìion-t . _ ’ " washer of simple and economical manufacture ’ From the annular portion I there extend ra and‘at the same time one which is completely re- dially extensionsß, each o! which has a Portion' `5 vliablein'operation and which' can he- used with- 3d rigidly attached .to and in the'lilßne of the 5 out _any previous preparation oiî4 the nut. f . . annular portion i Oi'- the Wßßher. and another . The doubie washer in accordance with theA4 invenfien'is'eomposed of two. equal or sußetentlally equal simple-washers, each having one tace 1o provided with projections adapted to engage the portion 3b separated by a cutting from the said' annular portion I and inclined downwards and . bwkWardS When 4the Washer i8 Seen as shown in Fie. 2 orFls. if» and turning in a clockwise direc- io . part with which the washer co-ects during the ti011- each washer has in ~addition radial extensions ‘so Shown in F12. 1, i. e., with their _smooth faces ' tightening-up of the nut, and one smooth face; shaped 'as to permit the relative angular~ 'move15' ment of the two washers in the direction in , . . . _ ooeeting with eooh other» in Such e We? that the ` `eggl'egel'le formed-by two Washers hos the Pro" 15' i which the nut is tightened up but not the move- lemons 2 oo both the, external feoelt Whleh Pro' ' mem-„in the reverse ’dil-eenen' ' jections are intended to engage the nut and the ‘ The' ‘ two washers are varranged with.` their smooth faces in Contact with each „the-n 2“ . TWo Washers el'e used in eooi‘metlon'» “e ie ’ surface ofthe part t0 be kept tight _ In practice the double -washer may be put on _. ' other characteristics end advantages of- the the market Withthe twv 81118192 @moment ‘mh- 2°. locking washer-'in accordance with the invention ers joined. together by .means of on? adhesive will become apparent'in the course of the pres- grease- the accompanying drawing, which represents by washer' me» 1 Wm be considered ‘uppoeiog that ent description which is made with reference to‘» _, . ' _ ` ' In order t0 understand the opereuon‘ of the 25 way of example two preferred embodiments of _the nut C is not Yet tightened up' the invention. In. the drawing: - f _ _ - - ‘ ‘ - 30 ‘accordance the invention. [y «` f' Fig.V 21s an elevation of a single washer.' . » Fig' 3 is a man view from above of the washer . _ _ 25 _ the two single washers A and B', arranged 'as has Fig. 1 is en elevation or e boit provided with the preferred embodiment of double washer in .Shown-in Fig 2. . As it‘is shown, the double washer formed by _ _ been already des'efibed» is thfeßdee on ille bolt E heme the out is P‘“ °n- The“ the. out i’ Screwed @n and lipari', ñrstu turns freely. when,- 30 however’ the douwe Washer A' B' begins tó 'be ' pressed between the nut C and vthe part D. the .points oi the projections 2 commence to -bite on -Eig. 4 is an elegation of a nut and of a washer the suda-ces with which they are m Contact' and 35 of modined form, to beused'prererebiy with nuts l namely the P¥°leeu°ns 2 °f the Washer A We the 35 *of* hard Steel’ I v- y > _ . l gaat#ve thlile'fnut (ìtililvhileuttl'iäe B s ace o ep . of ' the washer - shîivä'! î-nislâglïlï'îl View from above of tn_'e -wvashîî The washer B remains ilxed, while 'the washer With‘ reference to Figs. 1‘ mp3, each simple » A is carried round by the of nutthe C inextensions its movement. . The inclined portions 3 oi( 'do e _ » . the upper washer co-act with the inclined porl-v f _40 washer comprises an .annular portion ’ I, whosev intemal diameter, i. e., the is slightly greg-¿teg than the diameter diameter ofof the thehole, bolt with Awhich the washer ' is to he used, whilst the e . tions of the lower washer in. such a way that.I “me permitting the' tightemng'up “meme” °f Prevent the 45 -external vdiameter of the said annular part i is I gli smaller than the diameter oi’ the circle .which is f It is obviou's that there inscribed i“ the Outline of 'the nut' _ ` The periphery ofthe annuler Portion 'le Pro' vided with projections 2, extending. vertically movememm the 0pm' 45 a pomüve locking be; tween >the two washers in as many points of 4the » circumference as there are extensions on each _washen ' “ , _ eo relatively tothe Plane 0f the wher. cnd'prcfcr-' . 1n this connection it should he noted that the oo ably 0fV triangular Shape with a Vertex Which iS -dimensions of- the extensions do not increase with5 asymmetrical. relatively t0 the. base 0i :the -tri-.Í the increase in'the diameter ci the nut. but-they angle, in such a way that in each triangular pro-_ are maintained substantially the, same for all” :lection there v_is a steep face 2a> sloping in a sizes of nuts. .55 counter-»clockwise direction and a i’acezb having ' ~ ` f with a small nut. ior example. there will be il.; i A2. `amante employed four extensions' per washer, with a ample necessary to make small recesses in the slightly larger nut six extensions, with/one still stationary part. larger, for example, eight extensions and so on, This does'not prevent the advantageous use in the size of the extensions being kept practically the case of emergency of Äonly one single washer_ in accordance with the invention by arranging constant for all the nu _. As these extensions 3 work in fact edgewise, v'they can support ver_ big strains without being damaged. « , » Amongst the other advantages of the double ywasher according 'to the invention, there is the advantage that it is-not necessary for the washer to be made of high quality steel, but it is suiil cient for it to be made of a good constructional steel. 15 . locking washers that the tempering should be With my Washers. , Once the points of the washer according' to the 20 invention have penetrated into uthe pieces with , ' which they co-act, evendi' the washer softens owing to its being in the neighbourhood of sources of heat it will also maintain its grip. „ On the contrary, _when other known types of 25 washers soften, they Vrelax and permit the nut to loosen itself. - sions 3. The type of washer shown in Figs. 4 and 5 is employed for steel nuts of such a hardness. that 10 they cannot be notched by the projecting points of the type of washer shown in Figs. 1 and 3. It is to be noted, however, that this type of washer ‘ In addition, while it is essential with the known very accurately carried out, this is not the case it with the projections 2 towards the nut and making on the fixed part D one or more recesses for engaging the rear edge'of one or more exten in accordance with Figs. 4'and 5 is employed for the single nut, while the washer co-acting with 15 the part on which the nut has to be tightened is of the type previously described. In the form shown in Figs. 4 and 5, the annular part l ' is of an external diameter which is greater than the diameter of the cir'cle circumscribed to 20 the co-acting nut. 'I'he washer is provided with the usual extensions 3 identical with those of the washer which has been already described. 'I’he sole diiïerence'ls that, in place of the upwardly 25 Another important advantage of the washer > turned points, there are provided'upwardly-fold- > ed portions 4, which are arranged in such a way according to the invention is that the two single Washers may be made from thin sheets even >for 30 large nuts, precisely because there is a good grip on the part of the points, even when these- pene trate to a slight extent, for example even to the extent oi' h’alf a 'millimetro only, into the co-act ing surface, and> there is also a very effective 35 interlocking » of the extensions for any strain whatsoever, since the extensions work edgewise. A still further advantage of the invention is that, when the nut is tightened up, even an un _skllled operator will be aware il’ _the double washer is in good condition; in fact, in such a case, if as to receive exactly between them the nut C. 'I'he nutC is therefore set fast between the por tions 4, and when it is tightened up it takes the washer with it in its movement. For the rem 30 nant the operation is exactly the same as has been described for vthe embodiment shown in Figs. 1 to 3. What I claim is: _ 1. A locking device composed of two òppositely 35 disposed identical washers, each Washer including an annular body. a series of spring tongues ex tending circumferentially in one direction and ~ having the ends thereof deflected laterally of .the double washer can be seen its good Working one face of the body, a series of biting teeth 40 order can be ascertained by the fact that tige projecting from the opposite face of the body washer which co-acts with the i’lxed part is t rest, While the washer which co-acts with the 45 nut follows the movement ofv the nut itseli'. If the washer. cannot be seen, its goodl working order can be ascertained by the fact that small successive sounds are~ perceived each time that the inclined portions of the extensions of one 50 washer jump in the spaces between the exten sions of the other Washer. , 'I'he size oi’ the extensions in the direction per- - " pendicular to the radius may be equal to that of the space between two lsuccessive extensions, Ul Til but it is preferable for the extension to be some» what larger than the said space, so as to prevent any interlocking of the two washers in the di‘ rection of the tightening-up of the nut. ItY will be obvious to those skilled in the art that the ,double washer according to the inven tion can be used without any prior preparation of the fixed part D, as is -necessary with other known types of washers, with which it is for ex and facing in the same circumferential direction as said tongues, the tongues of one washer inter locking with the tongues of the’ other washer to 46 linut retrograde movement of the nut. 2. A locking device composed of two oppositely disposed identical Washers, each washer including an annular~ body, a'series of spring tongues ex tending circumferentlally ln one direction and having the ends th>ereof deflected laterally of one 50 face of the body, a\series of biting teeth projecting from the opposite face of the body and facing in the same circumferential direction as said tongues, the teeth of the respective washers bein adapted to grip the work and the nut whereby one washer is rotated relative tothe other and the spring tongues snap past one another during advance of the nut, said tongues interlocking with each other to limit retrograde movement , of the nut. . IGINO GUIDUCCI.