US1404994A - Machine for making lock washers - Google Patents

Description

A. MOORE.

MACHINE FOR MAKING LOCK WASHERS. APPLICATION FILED JULY 3,1919.

1,404,994. Patented Jan. 31,- 1922.

2 SHEETS-SHEET l.

Inn/anion 18 66-0 nay WWW A. MOORE.

MACHINE FOR MAKI NG'LOCK WASHERS. APPLICATION FILED wLY 3.1919.

1,404,994, Patented Jan. 31, 1922.

Am iiqtlfbikr mbrtrig or WORCESTER, mAssAcntTsEwTsgAssmnibg BB A FKCTfiifi-NG' COMPANY; 012* WORCESTER, ASSACHUSETTSQYA CORPORATION F MA'S'AGEUSETTS.

' A ne'ait bn fil ed July 3,

T allivhmn 2' i (meeting a Be it .khwn that I; ARLINGTON .MOOREQ a. Citizen. of th Uriited 'Stttes,' rgsicling at Wbi'Cstefl inthecqu ty of Worcester @nd C-o mmn'wealth of Mais'Qchustts; 'havg jlm ve'nt'ed'a new and us'eiul'lmprovement 1n Machine forfMakingf LOCk W&She1$,'" of Whih the fdllbyving'; tqgthr with thef"ac-' compahyihgfdriiwings, is a' specification.

The presilt'iiivntioil" relates to. a ma; chine fd l" hiakiiig ldc'lfwdshe s'; b'y'thebon j-f tinuous coiling of a strip in spn al forrg;' anfdfl th sliccessi've s'ev' 'era'nc'e' ofthe convolution s thus coilclf IVIdi' particularly; the max .chin of the p'rese'nt invntioh contemplates improvements; co'nstrfiction' and operatlon ofvr Existing machines of this class, 'Where-' byfth pyoduc tionof lock wzishrsis greatly" incfe'ase'chth frictibl'iiincitlnt t0 the spiral tcoiliflg of th matelifa'l' gratlfy reclilci'a nd the machifie madd adjustable,overfalfwld range; to' accommqclate; its" operatidn" tp various sizes' of" Washers" and Various: s ec-f tions of Washer material; f

the: cbnstru'ction; combination 'and anra geniefitof partsi'herei nalftr' set, forth in Fig. 1 1s 3 is an enlzifgecl-dtttil view ofthel coiling jand cuttinQ-me'chamsms of the maf' i I r Fig; 4 isa View of the same parts aS they apfpgir' in at plane at'right 'angl'efsf t0 Flg,

Withi a'jbjlse o'rl anvil 'portiibn' 2 Y and; spaced 1 latter is causegl' tortravel up 11111 down; inthe Spgecification of Letters Pat 'ntr he above; and other ob ect ar attained? a view'in fs'l'de ejlevati'o r i 'illus j tmti-nga machine constructed in accordance'f withthe invehti )n.g V Fig. i2 i's a similar ew showin theopr erating' parts as they appear from the 'iothe'xfi MACHINE FOR MAKINGLOGKVWASVHERSR td i vhih titatihhfis cbhtihilously imp rted v, by a" belt,"'1 10't shbwng connected with any suitable Source 2 of 'pQWr. f

ateitt d qan; 3.1, 1922. "1s19. "se ia11 io. 505,522 i by army? andbbniicting link Stdpfb-h i cur the int'i'mitt e'nt operation f suitable feed r9115 "9;" 9 and 10,} 10,1 which servet' to "eachrup gtrtikfof th head; 451a; t precltermlhed lengthof washer hi zitrialjll;

is" thus; fed"fintfmittntly iii-{each yc pfigzs PL J e-F uptin, ancl b p iriomw e'di e lyim ea h1ttl rti ly relcii-prcz tihg heaclf; Within the b190 1: F17" I the mandrel. As shown'clearly in the drawings, the end of the bushing 19 that projects from. theblock 17 has a helical orspiral edge surface 22, for the purpose of impart ing an initial helical twist to the materlal 11 as'the latter is fed against the same.

. The, direction of feed of the material 11 is" substantially, tangential to the upper surface of mandrel 18 and across the face Q of bushing 19, as shown in Fig. 2. Any suitable nieans, such as straightening rolls, not

shown, may be with. advantage employed to maintain the'material in the proper aline ment as it approaches the coiling mandrel,

' but afs such straightening devices form of themselves no part of the present invention, a detailed reference thereof 18 unnecessary. For the purpose of causmg the material to wrap around the mandrel 18, the"block 17 is provided .witha set of'coil confining or "pressingrolls 2 1, 24, here shown as three inynumber one above and one below the mandrel 18,- and the other on the opposite side'of said mandrel from the feed of'mas' terial 11. Each roll 24 is adapted to be rotated freely about its own axis by the friction oflthe material 11 as the latter is fed, the rolls being so arranged that their pe riphera-l surfaces will tend to crowd the material inwardly onthe mandrel 18 and cause said material to be wound in spiral form thereon. Theupper roll 24', or that one which is first in'the path of the ma terial, projects slightly beyond the helical;

edge 22 of bushing 19' and at its end has I a flange 25 with a bevelled inner surface 26,

that confines the material between it and the Surface 22- v V V V v j i w The roll '24 whichv next vmakes contact with the material as the latter winds about the mandrel, is the one directly opposite to the lineof feed, andthis roll 24 projects a greater distance outwardlyfromthe block 17 than the first roll, so that its bevelled flange 27 will hold the coiled material 11 inproper position on the mandrel 18, at a pointf beyond thecontact therewith of the first roll.- The final roll 24 has a still greater overhang, as shown clearly in Fig. 4:, thus disposing its bevelled guiding flange 28 against the coiled material at a point which is "approximately one-half of a convolution own centers on the ends of eccentric shafts or necks 29, 29 that extend transversely through the, block 17 On the opposite side of said block these eccentric shaftsv 29 are equipped. with segmental adjusting arms 30, 80, having elongated slots 31, 81 there in for the passageof bolts32 that are'let into the rear of block 17. By loosening the bolts 32, the arms 80 may be swung in eitherdirection to turn the shafts 29 inthe.

block;" this will throw the rolls 24 either inwardly or outwardly with respect to the mandrel 18. In this way, the rolls are ad- 11, being thrown outwardly from the mandrel' as the thickness of the material increases, and viceversa, being set up close to "the mandrel when thinmaterial is being coiled.

As shown in Fig. 5,the mandrel 18 at its end is cut away for approximately one-quarter of its circumference to provide a sub stantially vertical cutting edge 33. Corresponding to this edge, the reciprocating head 1- carries a cutter"34c, which, on the descent ofthe head, cooperates with the edge 33, and procures' the severance of the single convolution 35 of coiled material that partly overhangs the end of the'mandrel, on the free end of the coiled strip. Inwardly'of the cutter 3 1, the head jet carries a second cutter 36 that cooperates with another ver-' tical cutting edge 37 of the mandrel for the severance of the next mnermost convolution 38 of the coiled strip. Both cut-" ting operations takeplace onthe same descent of the head 4; thefirst, resultingin the severance of the convolution 35, takes place slightly in advance of the second by reason of the fact that the cutter is longer than the cutter 36 and hence strikesithe coil alittle earlier. This'delay in the severance of the second convolution is necessary in order that the first convolution may be adequately supported'while it is cut.

The feed or the mean 11 is St adjusted as to bring 'thefree end of the coil on man drel18 almost but not quite oppositeithe point of first severance. the production of a correctly formed spiral This results in lock washer, with, just enough circumfel ential-gap between its ends to permitthe straightening out of the materialnndericompression. To obtain asimilar result with the secondfor any subsequent washers out at-the same operation of-head-ehthe cutting edge 37 :is slightly offset from'theedge33, as shown in Fig. 5, and the edge of cutter 36 iscorrespondingly disposed slightly: at the rear of the corresponding edge of cutter 34. The'machine of my invention has been described in connection. With the, production oftWo Washers at a single operationof the cutting devices, but obviously theinvention is applicable to the simultaneous production of a greater number than this, simply by the adjustment of the feed devices to provide j at each: stroke a coil of greater:

' length, and by the provision ofadditional stepped-cutting devices on thehead-" and e r i r f g -of material in a plurality ofplacesat one mandrel 18.

I claim, 1. In a of material, and meansoperable'ata plural-- ity of points to sever simultaneously, a

plurality of the individual convolutions thus formed.

2. In a machine of the class described, means for coiling a plurality of spiral con-j I volutions in the end of a continuous strip of ma'terial, and means-for severing sald coiled "portion at a plurality of points' p 3. In a machine of the class described,

means for producing a coil, and means'for severing said coil, atone operation at aplurality of points.

74:. In a machine meanslfor supporting the coiled end-offa continuous strip of materiaL-and' means cooperating Wltll said supporting means to sever said coiled end in a plurality of places" at one operation.

5;,In a machine of the class: described,

means for supporting thecoiled end of a con t nuous rSllllp of material, and means co:

- operating With said supporting means to sever said coiled end in a plurality ofplaces tinuous strip of material, and means coconvolutions of a coil with a lapse of time between successive severances. 50s

machine of the class described,- means for spirallylcoiling a continuous strip 15 volutions" of the l-coiled end of a strip ofmaterial, e chconvolution, at'the time "of, its;severance, supported by the next ad 'jacent one'.. 7 1

{coil supportingarbor and a pluralityfof cut-' of the class described, 3

VVitneSSBS:

atone operation, and at success ve times;

o7; Infa ma'chlne of the class descr bed,

means for severing in a plurality. of -places',1

at one operation, a plurality ofindividual 1 8. In a machine of the class described, means for cutting the coiled end of a strip operation, with the cuts taken consecutively from the outer toward the inner portion of the'coil; i :1 9. 'In a machineof the class described,

means for severing consecutively, at" one operation, a plurality of the individualcon- 10. In a machine of the class described, a

ting devices: cooperating, with said arbor and movable in unison to sever the coil at a I pluralityof places, said devices being un equally spaced from the arbor, whereby to 1, produce. a lapse of time betvveentheir openations. 1 I

l1. In a machine of the class describe'd,"'a

coil supporting arbor and a plurality oficut- V ting devices for cooperation with said arbor to sever at one operation a pluralityof the individual convolutionsof the-coil, said de-i. Y

vices being out of alinement, whereby to pro; duce'a circumferentlal gap between the ends of each severed convolution.

' Dated this'23rd da of June,l19: 19. V AR INGTON MOORE-Lj- I I Pnmorn CQMBERBACHL of? 6 i

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