US1650943A - Automatic feed rivet heater - Google Patents

Description

Novo 29, 1927.

G. A. E. JONES AUTOMATIC FEED RIVET HEATER Filed May 20, 1921 3 Sheets-Sheet l Nov. 29, 1927. 1,650,943

` G. A. E. JONES AUTOMATIC FEED RIVET HEATER Filed May 2o, 1921 s sheets-sheet 2 Nav. 29, 1927.

1,650,943 G. A. E. JONES AUTOMATIC FEED RIVET HEATER Filed May 20. 1921 3 Sheets-Sheet 3 Patented 29, ll. i i

tl EPATENT GFFICE.

l-RGE A. JUNL, OF NEW LGNGN, 'NNECTIUUT, ASSIG-NOBJ OF ONE-THIRD TO LBERT B. HART AIM@ ONE-THIRD TG HAROLD E. STARR, BOTH OF LONDON,

CNNECTC'UT.

A'UTQMATEG FEED RVE'I HEATER.

Application filed 'May 20, 192i. Serial No. iV/1,288.

My invention relates to a new and imnumber, as shown; the tour outer slots openproved method oit', and apparatus tor, use ing outward at the periphery, and' the four 55 m metal working operations, in which, low like inner .slots opening inward, into the voltage, high amperage electric currents are orifices' of the central open spider-hub porpassed through the work, such as bolts, tion oil such carricreplate; a 'guiding-memrivets or other like articles or stock, and ber for each ot such carrier-plates lior pre through the inherent resistances of such venting the rivets when once inserted in such bolts, etc., raise them to the desired worlcarrienslots, from passing out of said slots ing plasticity tor forming, Ytorging rivetuntil they are automatically gravitationally lo heading in situ etc., or other desired manipudischarged from the open ends thereof alter lation at high temperatures, and the same is having been heated tothe necessary teman improvement upon my copending ap perature, 'for the working required by the 65 plication tor Letters Patent ot the United autoniatic action et the guiding-member; States, Seria-l No. 431,999, tiled December mechanism for intermittently rotating the 15 20, 1920, and as in such tiled application, in carrier-plate or plates with a dwell between so far as it concerns the apparatus, although each movement; a heating electrode or plunot limited to such use, relates more particurality ot electrodes beneath each carrierlarly to electric-forges, or similar apparatus plate; means for positionally vertically adt'or passing an electric current ol high ain- `pisting the electrodes for rivets of dilierent 2o perage and heating quality, through the lengths; an electric supply usually but not rivets, or other stock, tor making the same necessarily a transformer, ior producing a plastic for permanently rivet-heading the direct or intermittent straight heating cursame in position, in boilers, buildings, rent ot the required high-amperage; derived bridges, etc. trom a suitable alternating current supply;

"-5 Broadly, the objects ot my invention as an electro-conductive bridge-inember situto the apparatus which l have devised 'tor ated above each ot the carrier-plates, against carrying out my said method, are to provide which, the head or upper end portion of the an automatic apparatus, preferably and rivets or other articles will be forced into usually portable, being mounted on wheels, contact, upon the raising upward into con- Bo or casters, as shown in Fig. G, by the use oit tacting position ot the movable lower elecwhich, a greater number out rivets can, by trodes, in such manner that the heating-curmy new method, be heated in a given time, rent will usually, but not necessarily in all and automatically ejected therefrom when at cases, pass in series through one rivet, then the right heat; which l consider to be the the bridge-nieinber, then the other rivet caras very crux and salient pointo't myV invenried by the Sain@ Carrierplate and Complet@ tion, or inventions, as hereinafter more parthe heating circuit; means er mechanism ticularly pointed out in the claims thus for intermittently raising and lowering the 90 lnfinging` about lgreater and quicker heating lower reciprocating electrode or electrodes, ot rivets, etc. than has ever hitherto been with a dwell between such movements sut- 4e 1irnon'n, and this at less cost. licient to bring the rivet to the proper heat rlo such ends, my said improved electric ttor working; and a constantly rotating heating apparatus comprises a movable carprime-mover usually an electric motor, actu 95 Vier, usually. but not necessarily ot the revating` such i'i'iovlug mechanism, the times of oluble cor r-plate torni shown, and de the ii'otation and the beating dwell being con* scribed herein, or any desired plural miur trolled by varying the speed ot the primeber ot such vcarrier-platcs '(or any other mover. i suitable Aterm et movingl carrier) such car- Such apparatus of a simple and cheap rie"-plale or plaies being provided with a 'form ol' construction, easily operated, highly plurality el stockH airying slots open at one efficient and ot long life. Other objects ot 5U end, tor the ejerY n et the stock when heatthe invention will appear as the descriptiei'i ed, which bolt slots, in the circular ds; and while herein minute details i te shown and described c :mid inme and preferably eigbt .in

l not limited to like t.

tions, combinations or positioning of the various elements there-ot' shown; as many changes mayY he made therein, both in constructioi'i, combination and arrangement, without in any manner departing from the scope ot' my invention. which is tully shown and described in the following specification, of which the aecomparij/ing` drawings form a, part, wherein similar letters or numerals of reference designate like or equivalent parts wherever 'tound through the several views, and in which:

Figure l is a front persgective view in elevation ot my said improved electric l'ieatingdevice `for heating rivets, etc.

Fig. 2 is a view in detail on an enlarged scale, lookingy trom the top oi: Fig. .loit the mechanism tor interu'iittently rotating` each of the rotating carrier-plates by a step by step movement. with. a heating` dwell hel tween. the movements.

Fig. S is a like trout detail view ot portion ot the mech; m shown in' l. and 4. taken in section on the line 3-3 ot Fig'. 41, sl'iowing the lett-hand carrier-plate. with its two lower electrodes in the lower and depressed and rivetvreleasiney position; and in dotted lines showing' the two already heated rivets released and .fl-ravitationally tolling; trom the carrier-plate7 into any suit* able receptacle, not shown.

Fig'. et is a top-plan oi" the device.

Fig. 5 is a top-plan view of the two curved guide members situated immediately below the two carrier-plates lool-:ine` downward as to Fig'. l. and trom helov, looking` upward in Fig. l.

Fig. 5 is a side view in perfuiective and ele vation, partially in section, o t the complete device looking' toward the lett ot Figs. l and 1lin tl'ie direction ot' the arrows.

Fie'. i' top-plan detail view ot u portion et a` moditied torni ot cerrierqglate, showing means tor ifarvinaY the width of the slots to adapt the same for use in holding` rivets ot' different diameters.

Fig. S is a diagrammatic View ot the bridgingelectrtrcontact members, movableelect-rodes, transformers. primary current generator. electric wiring'. prime-mover mon tor, etc., in a machine ot the two carrierplate form of construction shown herein.` with rivets in process ot heating; and

Fig. 9 is a front exterior view in elevation on a reduced scale, oit the particular type et variabletransformer, which l prefer to use in such device, as shown in the diagrammatic View, Fig. 8.

As shown in the drawing The main tramer supporting portion of my said electric rivet heating apparatus eoir sists ot a main-trame F, in this particular case usually and preferably built. up of four upright rolled steel corner members l, usually or L-angle-har shape in cross section; like steel top side har-members 2; intermediate members 2. and 2; and trent inter rediatc members 3 and 55': the bottom memher 3. and top and bottom horizontal like members -i and 5, which are usually of the forms in cross section indicated. sfo-:ne being; llat plates, and others oli substantially Lehaped form in cross-section as shown.

At or adjacent, to the center ot such main iframe, extending across, and rigidly secured at either end to the intermediate side pieces or members 2. are two channel-bars indicated hy the letters U and U, and supporting the motor Iii, which is rigidly secured thereto bj; bolts As shown iu Fig'. l. the trout bar 3 is provided adjacent to either end with two outer vertical, journal boxes t'. in which are rotating'lv mounted the, shafts 22, 22. upon the upper end., which are rigidly secured the rivet carricr-ilatcs C, C. between which are four like journal-bormes 7; in each of which are rotatively and reciprocatiugly mounted the verticul upper portions S of the lower vertically n'iovable electrode shafl'ts S): the lower portions l0 ot which are connected with the upper portion 8 by a turn-buckle O by the manipulation oit which each of the said electroueeshalits may be lengthened or shortened, to operate upon bolts, rivets, etc., ot various lengths; and such turnduicklc shafts are suliiijiortcd at the lower ends iu step journal-boxes il, so as to be revohihle and vertically reciprocatahle therein.

And secured within the L-shaped upright corner-members l otl the trame are horizon.- tal journal-botes l2 (Figur. l) in which arc revoluhly mounted the jourirds ot the camshai't '13, having; mounted thereon a worn screw gcar-wheel 14. actuated by the wru1- screw gear 1.5 mounted upon the shalt iti. czirrying o spur `gear-wheel 'fr'. meshing with the smaller spur geanpiuion itl. mounted upon the shaft lti, ot' the prime mover or motor M.

Rigidly secured to the canwhr; vertical line with the two o n. lower joiu'uahboxes G and l". is a mutilated spiral grearovheel or cen'i-n'ieuiher :20 heviugj a huh 20 secured in auf.' desired por ay set screw 20 iiu'ovided with a who mutilated spiral screw meiuhe meshing` therewith and upon the supporting); op Q2 the case may be. carril per ends respectivelvn the magazines or stock terrier-)3121 constituting` a rotatabie .vcrlt h' is the coactin ioi-.i'tiootlied wheel 23 hai' the Yfour screw-threads and h v th' that upon the will he seen cam shaft lf3 each oi" said lli) lli)

rotation of the cam shaft 13, with a dwell between each ot such movements, ot sui'hcient time to heat the two rivets at the time ineluded in the high amperage electric heart ing-circuit or circuits, to the enact plastic working temperature required; and no more; whereby over-heating, burning, scae formation etc., ot such rivets absolutely prevented.

And it will be also seen that it one ot the members 2O has its tooth 21 at the :forward side, while the other has its lille member at the rear, while one carrier-plate in the dwell, the other in rotative 'feeding ino tion, while if both are inlike position, as both teeth 2l to the lfront and rear both are Simultaneously in heat or dwell.

Located immediately below the cam-shatt 1S, andsecured rigidly upon the lower portion l oi each ot the turirbucltle shafts, is a peripherally slotted collar And termed integral with, or rigidly secured to, the. front portion ot the channehbar il, which together with the lilre shorter l,-shaped channel-bar U', Fig. it, supports the prinioniover or motor lil, are the upwardly extending bracket-inen'ibers 3l, and 31, pivotally secured within which by the pivot nut- bolts 32, and 32, are the rear ends of the electrode depressing levers 33, (Figs. l and 6) g such levers 3B and 83 cach carrying at their torward ends, (as shown in Figs. l, t and 6) the double electrode-shaft depressing 'forks Sil; the inwardly extending pins 2T, ot which extend inward into the peripheral slot 2T, of the adjacent registering littcollar 25, rigidly secured to the electrode turn-buckle shaft l0; between which collars 25, and the lower journal boxes ll, in which such turn-buckle shafts are vertically and reciprocally mounted, are interposed coilsprings 351, which normally torce such twotwin electrodes and 30 simultaneously up 'arch against the lower ends ot the tworivets in the particular carrier-plate immediately above such electrodes E30 or 30, at the moment, so as to bring the heads ot such rivets into contact with the lower surface oit the electrwconductive bridge-member B or B` accordingly as such rivets are carried by the carriereplate C or C".

Rigidly secured upon the cani shaft 13, one between the two turnfhuclfle shatts l0 ot the twin'carrying electrodes 30; and the other in the saine. position between the like shafts supiliorting the electrodes 30', are two cams 36 and 36 respectively, the peripheral surfaces ot which are in constant contact with a 'friction roller 37, rotating upon a stud-pin mounted upon a shaft 38, the ends which are supported in the opposing faces ot the double tork of the llever or 33', the case may be, (Fig. ft) and it will be seen that when the depressing outer larger diametereol peripheral portion 39, ot such cam pr seing lever 33, 33', as the case may be, (Fig. 6) such lever will be Yforced down- "ward in such manner as to depress such double forked-lever, so to carry simultaneously downward tue tno twin turnbuclle shafts, with which 3T is connected into the' rivet relVeasing-iosition shown in lli@ t3; but that when the lesser diametered .ion 39 (Figmti), ot' such cam 36, or 36', is in Contact with 2li, (Fig. o) g that the resiliency et the coil springs 35, by their action upc-n the collars 25, will torce the turn-buckle shafts and the twin electrodes 30, or 30', carried 'thereon upward in such manner as to litt the registering rivets or other stock in 'the carrier-slots into contact with the coi'iductive briegeunember immediately above; thus closiiig the heating circuit thrusuch registering rivets. And `the path ot the current .is usually ot what is known as 'andeii'i-series, tlowingv first -trom the plus pole nioving-electrode through the rivet to the confluctire-britige-member, trom the bridge "eniher through tlie'othcr rivet, to the otn twin iii-oving-electrode, thence to the minus pole ot the electric heating supply, all shown in diagram in Fig. 8, by the arrows and plus and minus signs.

and it is also evident that by having the conductive bi'icl,f eiiieiiibei', or members, connected to, say the .minus pole ot the heating current si'ipply, or vice versa, as by 42', in dotted lines, 6, while the two coacting movable electrodes are connected with the opposite er plus pole, or vice versa, as shown at 422 in dotted lines, two rivets, etc., can. be heated in like manner, without beingl connected in tainlem-series; the path of the heating current beingv ot the typo oit what is known as in. parallel series.

rlfhat is, troni each ot the twin plus poles (or vice versa) ot each ot the electrodes 30, or 30', the pluscurrent passes through its individual rivet or stock-piece to the particular conductire-bridgc-nieinher situated above such electrode, and thence to the minus pole ofthe electric heating current supply. find it will he seen that by using this conductive circuit in parallel series, and by melting the carrier whether et the rotating vtorni showin or ol" any other suitable moriiuitorni, which will carry and bring siruultaueously into position between the plus and minus electrodes, a plurality ol' riif'ets or other stock` that a single rivet or stool; piece, or an almost innumerable number ot such rivets, ctc.` may be heated and delivered siinultaneously.

And. it is evident, although i have not deemed it essential to show the saine in the drawing herein, that the circular carriervplate in the form here shown could easily be made with a second, or any desired ninnber of spiders, having delivery orifices connected with rivet holding` slots, such spider or spiders being` situater, soncentrically eX- terior to the single central-spider shovn in Figs. l and 3, whereby 'tl could be lealed und delivered sinniltaneously. And it is also evident that With the parallel 'f1 s type oi heating;` current a single bridge-iiieinlier, could be used V.tor the lower movable as well as the upper immovable bridge-member or electrode.

It will :lso be 'that the particular form of construction shown in the drawings, will be especially valuable tor gene Eal conractors, Where there is :llreeuentlv need for simultaneous delivery oit several rivets of different dianiete consequently needing variation olf the diameters or the carryingH slots; and also dill amper:` j'es of heat,- ing current; and it also evieent that by the use oit my said maehiie viiL tivo carrierplatcs With adjustable rivet slots, and like electrodes, each carried l 'in a 'able and reciprocat-inrg` turi -bucl'i sli when coua'i t, pled with the universally 'rai singole primary coil, and double variable secondary coil transformer as shown, as many as four rivets or pieces oit the same size stock, or or different diameters and lengths, may be cle trically heater and delivered simultaneously or only a single rivet can be heated and delivered.

lVhile tivo transformers serving;l both of electrodes and 30 each oit which transfo 'mers is variable as to its prin'iary, but not as to its secondary, may be used, the cost oit installation7 space, weight and cost et current used are each reduced to a minin'ium by the use oit` the particular' type oi; universally variable transformer sho vn in Figs. 23 and 9; wherein the transformer inducing magrnetic-meniber is et' the ii'orm shown in Fig'. i), with two erterior and one interior neu1- ber in a closed niagrnetic circuit. li such device the priniary coil Zl() is concentrically mounted upon the central olf the :nag:lnetic member, While the secondary coils A and l, ilanlringl the sanie on opposite sides are each mounted upon one olf the side legis ot' such magnetic member. rind as in this type ot' transl'ornier alreadv in use and on the inarlrel, both prima and secondary currents 'ier each two electrodes il() and 30', may be separately Widely varied, by the use oit' only one transformer, the hea i. reu-l. passing' through the electrode conductive bridge-member ll or lil', maj,r each lie made vto deliver currents oil dillferent voilages, or an'ioerag or both, as may be required, merely by setting;I the n'iniary-eoil switch member l), in such position that it will give the required greatest heating current to one set ot electrodes, ane at the same time give the requisite lesser heating; curn secondary coil B, n' at the moment parsing` through L.he primary central A. C. current coil K (which nay be Widely varied by proper positioning or" the Cut-out suitcli-nieii-iber O (Fig. et such `elle primary Coil K, Figs. 8 and a.) that the amper-age delivered by the secondary coil A, when its circuit is closed through the bringing ol the rivet-heads into ontaet with the elcctro-eonductiJe bridge-- bei' l', will he et just one-halt` the amperage, l.nd consequently of' just one-halt the rivetdieating power, oi the eu'rent delivered by the secondary coil B.

'lui l connections, and a eontrolling,r

taaie rheosrift, and s vitch.. are oit course provided Yl'or the prime-mover motor nl, but they being ol" well known torni I have not deemed it :enliial to show the same in the drawings. lier have lf deemed it necessary to show (Fig. (S) more than the hand-levers on the switch-board ol" the primary, and two secondary coils ol the universally variable trans ormer T, such hand-levers beingl each po ioned to accord with the circuits as sh rin in diagram in Fig. S.

The electrodes 3() and 30', are prete lably 'formed ol` cold-rolled eleearolytio pure copper; and are made oiE suiiieient mass as not to be highly heated th1'ou 'liout by the passage ol the current. lllach pair ot movable electrodes 30 and 3 are each separately mounted on top of one oi the turn-buckle vertically reciprocating shafts 9; are insulated from such sha'lt by an insulating block Li0; and are connected one with the plus, and, the other with the minus pole of one ot the secondary coilsI ol the trans'lim'mer by tlex''ile resilient. conductive ribboli-.f-:trips #il and 4l. usually ol 'opper, brass, etc., while the elec!ro-couductivc bridge members B and ll are suliported by like thicker, less resilient supportinebars Ll2 (Fig. 6) bolted to the frame, so to be practically immovable, and are Yinsulated from the supporting bars a2, by insulation eti/l; in such manner that when either pair oit the reciliirocating turn-lnielrle shafts supporting' the electrodes 3l), or 80. are raised up by the action of the prings 35, the two rivets the moment ituated underneath such electro-conduc- .j bridge memlier B- or B', will have the s thereinc brought into Contact with. such iilperposed bridge-member, so as to make a ive closed heating-circuit in series thru each pair of rivets by way oi: such bridge-member, all as clearly idicated in the diagram Fig. 8.

lvlounted upon the interniittently rotated carriei-shatts 22 and Q2" are the carrierpiates C md C, constituting,` the rivet holding magra es, which are usually and prei erably ot the circula;l central open spiderlilie t'orm shown. `While the number of rivet-carrying slots ot .such carrier or support shown in the drawing` total eight in number; tour upon the periphery with the open ends outward; and four at the periphery ot the centralspider, with open ends delivering the heated rivets inward to the inA terstices or oriiices ot the tour-spoked central spider, it is ot course evident that the number oit such slots may be increased or diminished without in any manner departing` 'from the scope oit my invention.

Secured at either end to the iront corner standards o'i the main-trame is an l.bar 44- located and lyi'eieiiibly immediately below and adjacent to the rearward edges of the rotating'v carrier-plates C and C', and secured to such bar lll usually by a screw or screws 4.4; is a rivet giiide member G usually and preferably ot' the single integral-piece double inner and outer volute whorl coil form and shape shown in detail in the top-plan View thereof, find it will be seen (Figs. 25, l and -tnat when the rivets are dropped by hand into the carrier-plate Lili, when they are in the extreme i'orward feeding' position indicated at 46', Figs. l, Ll; and 5, their lower ends will project slightly below the guide member (l with the outer side oit the rivets in the outer ieed slots in con tact vritli the inner concave face ot the outer whorl or volute ot the guide member G, and with the inner side of the rivets in the ts in contact with the outer l side ot the inner smaller diainetered or volute oi such guide member G,

inne-r spitten @Ol l V', wb ori :iso that th y vill be retained in such open end slt as the carrier-plates are rotated :is .indicated by the arrows in Figs. Ll and 5, as the carrier shafts 22 and 22 are intermittently rotated step by step the left hand one 22, clockwise, and the right hand one 22 anti-clock-wise, as indicated by the arrows in 4 and 5, until they register with anc are located between either the'electro-conducti ve bridge member B orB, and the electrodes 30 or 30, the case may be; bei ng positioned ai' shown in dotted lines in Figs. fl and 5, as indicated at H; and as soon the two rivets are so placed the. circuit is closed by the automatic lifting up ot the electrodes as shown in Fig. l, so as to brimr the headed upper ends oi the rivets "ntowc tact with bridge member B or l5, as the case may be. Thus it will be seen that the worlr holdiiw magazines C and C/ f toadvancc intervals relative to the reciprocation of the electrodes 30 and 30 so that the rivets supported in such magaines will advanced by such magazines C and C into heating position between the electrodes B and 30, 3U, or B and 30', 30", and zitter heating, again advance by said magaziin-xs out of ."ieatirgl -position. ln trom live to six seconds ot electric contact, the rivet or rivets Yin circuit will have reached working heat, and as soon as the carrierplate begins its next succeeding intermittent step movement, the hot rivets will both be brought into contact with the closed looped portion ot the guide member Gr, as shown at t?, and di", or Fig. 5; `and as the carrier-plate continues to revolve Y will be iorced along the outer peripheral carrierslot, and il?" along` the inner spider-slot and when in the position indicated by crosses surrounded by dotted lines 1li/'1 and 472, being wholly out of their respective slots, they will tall together by gravity into any suitable receptacle (not shown) situated in pro position beneath, the hot rivets, being, ejected, and in the act of dropping,` being indicated in 'the dotted lines in Figs. 3 and 5, the outer rivet by lil and the inner by 472.

By n'iy said new and improved method, and by the use oit my said new and improved antoniatic rivet heating machine and apparatus heretofore described, rivets of 34 X Eil/j length can be delivered at the proper heat ilior handwiveting at the rate of ten per minute; and ifor Abull riveting at the rate oic twelve per minute, as l have proven by actual operation oli such machine or apparatus.

illhile l have shown herein two intermittently rotatino peripherally and interiorly sL ider-lile, slottec carrier-plates, each heating two rivets at a time as the two carrierplates are intermittently rotated step by step with a suihcient dwell between such movements to bring,` the rivets to the proper working heat, l do not intend to limit myselt to the exact form of carrier or other parts thereo't shown and described herein; but, believing that l am the iirst person to conceive of and practically embody and put into actual working` use such an automatic electric heating device, l claim as my invention, both as to method and apparatus, the broad principle of a moving carrier for rivets, etc., as shown inthe machine her-ein described, whereby and wherein a plurality of rivets or other stock, without human assistance, save for the feeding` oi the rivetsl to suoli carrier, are automatically and intermittently singly, or in any desired plurality,

brought into position, and in contact with a suitable electrode or electrodes with a sufricient dwell, while included in the closed elecn tric heatingl circuit, to bring,` such rivets or other stoclr to be treated to proper plasticity by an electric heating` current, which rivets or stock as soon as heated to the proper point, will be autoinatically ejected Yfrom such carrier into a suitable receptacle irrespective ol the particular form shown herein, as I consider any method or apparatus performing` the same 'functions in substantially the same way the method and machine herein described and claimed, to be clearly within the scope and purview ot' the broad claims hereof, wherefore I consider that in its broad scope my invention or inventions cover and include, any method or machine ot the broadest class or kind described, including any and all 'forms et moving carriers, which will carry a plurality ot rivets or other like articles, and which will automatically, singly in sequence, or in any desired plural number in sequence, in like manner, bring them into posit-ion to close the electric heating circuit through such rivets, heat them and thereafter automatically eject them from the machine or apparatus, and then simultaneously and automatically bring,l another fresh rivet or rivets into position to be heated to be within the broad scope and purview ot' my invention or inventions as set forth in the claims hereof.

Neither do I intend in the broad claims hereof, to limit n'iyselt to any particular number of such carriers or carrier-plates, nor to any particular construction, combination or arrangen'xent oit the various parts making up and comprising` my said ew and improved automatic rivet heating` machine and apparatus herein shown; and itV is evident that many various changes in the construction, or oit' the combination and arrallgement of the various elements and parts making up and coniprising said apil'iaratus, may be made by any sltilled mechanician, without in any manner departing from the broad scope ot' my invention.

It is highly essential, especially ior use by the general contractor@I in such arts as the erection olf structural steel buildings, bridges, etc., that some means should be provided for quickly and easily varying the width of the ri vet-carrying slots l@ l'or use in heating` rivets o'lt widely variant diameters; and to this end I have devised the adjustable mechanism 'hown in detail in Fig. 7 which comprises a slotvarying plate 50 contoured at the inner side 5l to the outer edge ot the inner slot and contoured at its outer edge at 5l to the inner edge of the outer slot coincident in axial line with such inner slot. Such slot varying plate 50, tor the salte of lightness and cheapness, is drop Yforged or otherwise formed trom thin sheet-steel or other suitable metal, and is preferably providedy withthe inner and they( outer depending 'flanges lg and 513, shown in dotted lines in Fig. 7, which ended down into the inner or outer rivet .carrying slots sutliciently far to hold the rivets upright iu the :lot whatever their diameter, such llanges being preferably integral, and at their unction point itting into a suitable shaped top-cavity iti il'ormed in the upper face oli the carrier-plate. This plate 50, 'tor purposes ot adjustment is provided with a longitdinal seniiarircular or segmental adjusting-slot struck 'troni tl 'i axial center ot the spider carrier-plate in which are located one or more (preferably two as shown in Fig. i) securinio screw-bolts 58 and lt preferably with driver slotted heads, screwing into the carri r-plate- As shown in Fig. i', the plate 50 is in its extreme right hand position with the rivet-plato rearniost, and it will be seen that when shifted baclo ward toward the leit't of such Fig. 7, until the securing screw is at the extreme right hand end ol the slot 52, indicated by 53', this will widen both the outer peripheral and the inner spider rivet heating-slots in the same degree to the full diameter possible, or to any minute graduations in be tween.

inasmuch as in some eases it may be desired to have rivets or stock ot ditlerent diameters carried in the inner and outer immediately adjacent carrier-slots; in such case the plat-e 5() is usually separated into two parti: along the curved line one Oil Fig. i', passingl through the conter oli the adjusting-slot 52, and in such case, by using se- ;rinj screws and oel, with heads ot considerable dian'ioter, both plates whatever their position, may ce held securely in place without danger et' accidental displaf-emeut, as but little strain is ever brought thereon; or each halt of such plate may be provided with a .separate curved slot 52, as may be desired.

In some cases, and :tor certain purposes, it may be extremely desirable that rivets or other stoel; ol 'liilierent diameters, or lengths, and consetpiently (as electric resistance is dependen'` upon requiring' currents ot dill/rent alnperapf to bring;- thein to just the required state ot worling plfuiticity witl.- out danger of over-heating.

Y rind it will be seen that two or more stool-1 pieces reduiriug; heating currents oit diilierent amperaiges, though carried by the saine carrier late` may be simultaneously heated and delivered by eliminating' the elcetro-conductive bridge member by dividing; it into two separate electrodes, a and b, as indicated by the dotted lines titl, SO on the bridgemember I5 of the diagram oit Fig. tlandicounecting each separately in circuit with one pole ot one oit the secondari.' coils ot the tyie ot universally if'ariable t-"i1is;toiiiier shown .in such 'o' S, and connecting in lil-:e manner each electrodes 230 with the opper es of the same two separate and disfariable secennary coils of the same Li tansieormer. But in such case, if each of 1gru) the two carrier-plates is to carry say, two rivets other stock-pieces, eachV requiring a current ot a different amperage, in that case, the transform-er T, while having but one variable primary coil, has one variable secondary coil tor each dii'i'erent amper-age currt-:ntl required. find it will be seen that with a transformer ot the universally variable type shown, that in a rotary stock-carrier machine ot the type shown, having two rotary carrier-plates each simultaneously heating two riv-ets etc., and having my two part slot-adjusting plates 50 combined with a universal primary and secondary transformer having one central magnetic core leg, carrying the variable primary coil and tour exterior magnetic core legs, each carrying a variable secondary coil, that four rivets or other stock, each of a. different mass, and consequently different electric conductivity requiring tour currents each of different amperage, to bring them generally to proper Working plastic heat may be simultaneously delivered, in proper -.vorliing plastie condition.

And by this arrangen'ient, it will be seen that rivets ot' widely varying dia 'meters and lengths may be at the same or ditierent times, heated in such apparatus or machines by varying the heating current supplied to the electrodes ot cach carrier b v using the particular form oi universal variable transformer hereinbeforc described, and the other hcreinbeloro enumerated mechanism; and this'also, without the slightest; danger of over-heating; and consequently deterioration of such rivets or stock by burning', scaling etc. But. while such curved slotted double adjusting plate shown is the device for varying the width of the rivet carrying` slots. which l preferably use, it is evident that other devices may be used 'for such purposes in place thereof, and in the broad Vclaims hereof relating thereto, l do not intend to in any manner limit myself to such form of plate; but intend to cover and include in Erich broad claims designated thereto, any device tor so varying the width ot rivet or stoel; carrying-slots, in a movable carrier of any term, in any form ot electric stock heating machines. Y

By the words rivet or rivets, article or articles, stock or stock-pieces, when used in the description or claims hereof, l intend to cover and include not alone headed rivets or bolts etc, but alsofunheaded, or any other work or bodies, such as small articles or pieces ot stock, to which the broad principle ot' my said method, and my .said automatic heating apparatus may be adapted and used, 'tor any purpose, such as stamping, swaging, forging, or in any other mannerchanging the shape thereof, while in a plastic heated condition, my said apparatus may with ii'nmaterial changes therein be made adaptable to an almost innumerable number ot such uses with stoel; or articles desired to be contoured to any shape, without in any manner departing 'trom the scope of my said invention or inventions herein first disclosed and claimed.

And inasmuch as several individual portions of the mechanism herein claimed individually, are applicable to be used in automatic feeding and delivering machines other than electric heating machines, l `do not intend to limit myself in the broader claims hereof, strictly to use thereof in such type of machines, as it is evident that my improved slotted circular carrier-plates with axially and peripherally holding, and delivering slots, especially when coupled with my combined stock-guard and ejector member, as well as my adjustable slot-plates tor varying the widths ot each individual carrier-slot are each and all generally and combined adaptable tor use in any and all machines, electric-heating or non-electric-heating', where automatic feed and delivery is desirable; and in the broad claims hercoi' relating` to such mechanisms immediately above enumerated, l intend to claim such mechanisms both individually and collectively, vhen applied to and used in automatically feeding and delivering machines for every name and nature, wherever such mech nisms, singly or collectively in combination, are capable ot use therein.

l claim- 1. ln a device ot the class described, a moving carrier-member having a plurality of rivet carrying slots open ended their rear encsrelative to the direction of movement of the carrier-member tor the ejectionot' the he ated rivets; a guide-member located adjacent to the moving carrier-ineniber for preventing accidental removal ot' the rivets alter insertion in the carrier-slots,` during a step by step, intermittent movement thereof with a dwell tor a predetermined time between each two sequential movements, said guide member terminating to the rear ot" the ejecting position, and means tor automatically ejecting the rivet or rivets 'trom the cm'rier-meniber upon the lirst partial movement oi' such carrier-member a'lter the bringing ot the said rivet or rivets sequentially to plastic Working heat.

ln a device ot the class described, a moving carrier-member having` a plurality ot rivet carrying slots open ended their rear ends relative to the direction ot movement ol the carrier-member for the ejection ot the heated rivets; a guide-member located adjacent to the moving ca 1ier-member tor areventine' accideiital removal ot the rivets v D atter insertion in the carrier-slots, during a step by step, intermittent movement thereoli with a dwell for a predetermined time between each movement, said guide member llt) terminating to the rear of the ejecting positien, nieenil vfor automatically ejecting;` the rivet or rivett1 troni 'he carrier-inemliiei upon the irfit partiel movement oi such carrierinunber after the bringing ot the rivet or ri ete sequentially to plaetic wlnliing heat; und incline or inechanieni 'tor simultaneously :nitolnatically bring-inge,` a fresh rivet or rivets to heetinggpeeition.

Il. i ice of the character describe4 moving carrier adapted to receive a rality Ol' articles be eequentially heated; an elett c heating current enpply; n plurality 0i movable eleclrodee; a bri ging electr-ej conductor nieniber alla`L ted to "ic-rin closed electric-circuit throigh articlesy 'to he heated'ivhen the i trodee by their movement bring sluch'aiii` clee into contact with therbridgii L, electroF conductive Ineinher, wit a dwell ennicient to bring such anclcs to the proper workingheut; means or niechani in for automatically intermittently inoviui; lli ier; and means il'or autonnitically ejcc" iticlcs when they have been heated to the required working teinperaturee.

i- In L device oi the chai-z a moving carrier adapted to rality of artieleS to be seque an electric lieatii'ig,` current imply: a plurality oi1 inovablc electrodes; a cridging clec tro-conductor ineinlier adapted to torni a closed electrician-cui t through a plurality ot the articles to be heated when tl movable electrodes by their nioveinent bring euch articlesf)` into contact with the bridging,I eiectro-conductive nieniber, with a dwell eu'li'icient to bringl Such articee to the proper r deecribcd, a pluhealed;

vfm'ling-lieat; the current passing thru one movable electrode thru one article 'to the bridge-uieinher, thru which it paeece in fiericeI thru another article to Second nievable electrode, and thence to the minus (n) pole of the electric heating current supply; ineans or niechaiiieni for automatically intermittently inovini the carrier; and ineane for automatically ejecting, the articles when they have been heated to the required Werl:- :ingv teinperaturefs.

5. A device ot the clase described, coniprieing a moving carrier lniving; a plurality et stoclecarrying l slots open one end to deliver the stoel; when heated to pleeticity; and adjustable ine-ans 'l'or varying the width o'l each ot Such Slots 'tor use with Stoch oit diiiierent einen or diameters.

I1 device of the clase describe( coinprieing` u. substantially circular intermittently rotatingv carrienplate having' a Spider openvforli portion surrounding` the huh; :i plurality oi.E curved Stoclrfcarrying Slots open at the `peripheinl end; a plurality of like slots opening,v into the c-rilicee oit the Spider; and an adjustable ineinber 'for individually varying,l the Width of each adjacent pair of inner and outer slots, in such inanner as to :adapt the Seine to holding therein Stock oil diii'ereut sizes or dieinetere.

7. A device ot the clase described, coniprieingl a eu tantially circular interinittent` ly rotzting carrier-plate having a spider open-worn portion eurrounding the hub; a plurality elf curved stock 4::i1'z5yf'ii'igeliile open at the peripheral end; a plurality ot' like slots opening,I into the oriliee-i ot the `epider; and an adjustable-member ior varying the v.'id'th oi' each iuljacent pair ot' inner und outer slots, concaved on the inner side to the contour oi" the curved outer Wall-face ot the inner spider-slots, and on the outer eide convened the contour oil the inner Wallface ci the outer peripheral slots; und ineans for securing such zuljustable ineuiber er ineinbez-s in any required position.

8. A, device oiE the class described, com` prieing a fnihstuntially circular intermittently rotating carrier-plate having a spider `:pen-work portion surrounding the hub; a

plurality oi' curved stock carrying slots open at the peripheral end, a plurality of like Slots openinn' into the orilices of the Spider, and an adjuetable-ineinber or nieinbers ior varying the width ot' each adjacent pair ot' inner and outer slots, eoncaved on the inncr eide to the contour 0i" the curved outer- \vall'lface olj the inner spider-slots; and on the outer Side couver-:ed to the contour of the inner frail-:tace ot the outer periplicral slots; and ineane for eecurinw such adjustable incinber or Inen'ibers in any required poeition, in euch nianner as to adapt the Sau/1e. to holding therein stocke oili ditlcreut sizes or dian'ieters.

9, A (flevice of the claus described, coniprising a Substantiall y circular interinittently rotating cari'iei--jLilate having a spider open-work portion surrounding the hub; a plurality of curved Steel; carrying slots open at the peripheral end; a plurality ot like slots opening into the orifices ot the spider; and an adjustableeineinber ior varying the Width ol each adiacent pair of inner and outer elote, concaved on the inner side to the contour ot the curved outer wall-'tace of the inner spider-elots, and on the outer side convexed to the contour of the inner Wall- 'face ot' the outer peripheral Slots; and ineens 'tor securing such adjustable ineinber in any required position in such manner as to adapt the Slots to hold therein stocke of dilierent 'lianieters, Such adjustable members coinprieing,` a curved-slot or slots, and Securing means located on such slot, und screwing into the carrier-plete.

it). A device of nrizrirf CIJ lll-5 lll) and an adjustable-member tor varying the width oi' each adjacent pair of inner' and outer slots, (split into two parte along` the line of its curved path ot adjustment, whereby the inner slot may be made ot one width, and the outer oit another) concavcd on the inner side to the contour ot the curved outer walldfaces oitl the inner spider-slots; and on the outer side convexed to the contour or the inner wall-tace oit the outer peripheral slots; and means ior securing such adjustable member in any required position in such manner as to adapt the slots to hold therein stocks et dilierent diameters, such adjustable members comprising a curved slot or slots, and securine means located in such slot, and screwing into the carrier-plate.

11. .fr ilevice o'j the class described, comi prising a plurality oit substantially circular stock eai.'rying-plates having stock-carrying slots open toward the anis, and other like stoclecarrying and delivering slots opening at the periphery; and n'icehanism tor automatically intermittently rotating such stoclecarrying plates by a step by step movement, with a predetermined timed working dwell between movements.

12. il device or' the class described, comprising a plurality ol substantially circular stock carrying-plates having steelt-carrying slots open toward the axis, and other like stock-carrying and delivering slots opening at the periphery; and mechanism tor' automatically intermittently rotating such carrying-plates by .a step by step movement with a predetern'iined timed working dwell between movements; in such manner that the adjacent. abutting` edges or cach pair of wheels move toward the trout olf the niachine, whereby the empty stock-carrying slots to be supplied with tresh stock are tound at or adjacent to the extreme front of the. machine. Y

123. A. device ot the class described, comprising a plurality o't substantially circular stock-carrying plates having stock-carrying and delivering slots open toward the axis, and other like stock-carrying and delivering slots opening at the peripl'icry; and mechanism 'tor automatically intern'iittently rotating such stoel?earryin g` plaies by a step Vby step movement with a predeleri'nined timed working dwell between movements; in such manner that the adjacent abutting edges ot each pair ol wheel-like caimiew plates move toward the front ot the ma chine, whereby the empty stock-carrying slots to be supplied with fresh stoclr are found at or adjacent to the extreme front of the machine; the two wheels rotating alternately so that when one is in the heating dwell, the other is in rotative movement.

14:. A device of the class described, comprising a plurality or' substantially circular steelt-carrying plates having Stock-carrying and delivering slots open toward the axis; and other like stock-carrying` and delivering slots, opening at the periphery; the open ends olf the slots being at the rear relative to the direction -o't movement ot said plates, and mechanism ior automatically intermittently rotating such stock-carrying plates by a step by step movement with a predetermined timed working dwell between move ments.

15. ln a rivet heater, a clamp comprising upper and lower rivet engaging electrodes, and a disl; rotatable upon a vertical aXi said disk beingpositioned with a peripheral portion between said electrodes and having a plurality or rivet receiving notches in the periphery thereof.

16. ln a rivet heater, clamp comprisingrivet engaging electrodes, a rotatable disk having a peripheral portion positioned between said electrodes anu having means adjacent its periphery supportine a plurality oi rivets, and means 'for simultaneously openingsaiil clamp and imparting a rota tive movement to said dish.

17. ,ln a rivet heater, a clamp comprising a stationary and a movable electrode, a rotatably mounted disl; having a peripheral portion positioned between said electrodes and having means adjacent its periphery Jror supporting` a series of rivets, means for opening the clamp and means operably connected to said clamp for imparting a step by step motion to said disk.

18. A rivet heater comprising a pair ot clznnping electrodes, one ot said electrodes being movable toward and from the other, a spring for pressing said movable electrode toward the opposing electrode, a lever con-- nected to said movable electrode 'for moving said electrode away `from the opposing electrede, and a rivet feeding mechanism opern ably connected to said lever to feed a rivet into position between the electrodes upon operation ot said lever.

19. lin a rivet heater, a clamp comprising a pair of opposed electrodes, means 'for operating said clamp, a magazine tor holding a plurality ot rivets and means operably connected to said clamp operating means tor transferring rivets trom said magazine to a position between said electrodes.

20. ln a rivet heater, a clamp comprising pair ot opposed electrodes, a rivet magazine, and means tor opening said clamp and 'for transferring rivets Yfrom the magazine to the clamp.

21. lfn a rivet heater, a clamp comprising a pair clamping electrodes, one or" said electrodes being movable toward and from the other, a support for supporting rivet by its head, means for actuating said support to feed a rivet into position between said electrodes, and means for moving said movable electrode into engagement With the ill lower end of the rivet to press the head of the rivet into engagement with the other electrode,

22. In a rivet heater, a clamp comprising' a pair ot clamping electrodes, one of said electrodes being movable toward and from the other, a support i'or a rivet with its ends exposed, means for actuating said support to feed a rivet into position between said electrodes, and means 'tor moving' said movable electrode into engagement with one end ot the rivet and to actuate said rivet to press the other end oi said rivet into engagement with the other electrode.

23. In a rivet heater, a magazine for rivets, means ii'or aetnating said magazine in one direction to position the rivet to be heated in axial alinement with its heating position, and means for elampingythe rivet in its heating position.

2li. In a rivet heater, a magazine ior rivets, a pair ot opposed electrodes, means 'tor actuating said magin'zine in one direct-ion to position the rivet to be heated in axial alinement with its heating position in Contact with said electrodes, and moans ior clamping the rivet in engagen'ient with said elec-- trodes in its heating position.

25. In a rivet heater having` a heating position for a rivet, a magazine for rivets, means for actuating said magazine in one direction to position the rivet to be heated in alinement with its heating position preparatory to being positioned in its heating position, and a movable member for anchoring' the member to be heated in heating' position.

2G. In a rivet heater having a heating position for a rivet to be heated, a magazine ior rivets, a pair o1" opposed electrodes, and means Ytor actuating;` said magazine in one direction lo position the rivet to be hea.o l in alinement with its heating; position. the magazine eonstitnt'ng; a guide to guide the rivet during` its movement into heating position.

27. In a rivet heater having' a heating; po` sition tor a rivet to be heated, a n'nrfgazine tor rivets, a pair ol" opposed electrodes, moans i'or actuating said magazine in one direction to position the rivet ii, be heated in alinement with its heating; position, the magazine ('oi'istitnting a rinde to raide the rivet during its movement into heating; pi tion, and a movable member iior elan'ipinoj the member to be heated in the heating;1 pi tion. i i

Q8. In a rivet heater, a clamp comprising;- a pair ot electrodes, one ot said electrodes heingr movable toward and from the other, a support for a rivet, means for aetnatinn' s: 'ffl support to feed a rivet into alinement wit said electrodes, and a spring' operatively om neeted to actnate said movable electrode to clamp the alined rivet between said pair ot' electrodes.

29. In a rivet heater, a Clamp comprising a pair oi" el etrodesq one. oiE said eloetroees being; movable towarn and iioin the other, a support tor a rivet. a spring Yfor moving` the movable electrode into heatingv position, a lever operatively connected to said movable electrode, and means tor actnating said support to 'toed a rivet into alinfiment with sain electrodes and tor actuating said lever to withdraw said movable electrode ont of heating; position.

30. In a rivet heatn'. a clamp ooinprisingiA a pair oit electrodes, one ot said elmtroder-i being' movable toward and from the other, a support 'for a rivet with its ends exposed. a springV operativelv connected to said niov able electrode, lever operatively connected to aait-L novahle eleetrofe, and means Ytor at tinitinA` said snpport toy tend a rivet into :'-lineinmt with irl. eleetrodesand tor s hseqnentlv actuating' said lever to withdraw said n'iovable elontrode ont of heating posi` tion. the sprang' lveing operable to act at'e the movable electrode into one rement with onY` end of the rivet to he heated and ino *in the rivet into its heating' position in engagement with the other electrode.

31. In a rivet heater,y a rotatable rivet hol( ing means ifo r snpportin 1' the rivets with thei ei s exposed, a pair ot' opposed olertrodes, means for advancing' said rivet holrl inn; n'ieans at intervals sneeessivel'v to present the exposed ends ot tinn rivets into Contact with the eleetrodes tor heatii and rfnans tor Ciampino; the exposed ends oi the rivet@1 into enlnaemont with said eleetrodes to hf heated.

3Q. In an eleetrie heater` the combination with a rotatable `work holdin;Y means' 'tor snini'iortinggj the work to he olortrif-allv heatod oi" a pair o'i" opposed electrodos.. inearn: for rotating' said work holding means al intervals snerossivelv to i'n'esont the work to h'x heated to the oleetrodes and nieans for clainivino' exiionod portions ol snrh work in direct ei'iaapjennnt with said elortrodrs to he hrated.

33. In a rivet liraler coniprisinf." a pair ol ,lnnning electrodes, a rivet 'temlinar inechai ana Ytor operatinf" raid 'lnedinjr mechanism at .intervals snee: ivelv to nresent the rivets to the electrodo for heatnn` Ricans for nornrllv.cansino .said el-ff'i'i-orlef, to appz-mich one another and elanipinglv rn- ;ran'e ih" exposed onda out a rivet. and means awingv said olor:-

c he ted rivet and the rei-,en sneceedinn' rivet.

GEGRGE A. E. JONES

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