US930022A - Electric power-hammer. - Google Patents

Description

T. F. B AILY.

ELECTRIC POWER HAMMER.

APPLICATION FILED MAY 19, 19 09.

Patented Aug. 3, 1909.

umummuunnn- 20 an'ddurabl CCIlSl' I'IIGlZ-IQD, which will he eflii so mers by the wearing or breaking of the sold Moo 'rnhnnnnsr. BAILY, OAQFALLIAN'OE, OHIO, ASSIGNOR or ONE HALF Jro THE Tiinnsos &

' W L IAMS C PANY, or ALLEANOE, onio, A oonronmionor 01110.,

nnno'rmo POWER-HAMMER.

Toiall whom it may concern:

- Be it known that I, THADDEUS BAILY, a

citizen of the'United States, residing at Allisince, in the county ofStark and State of to such a device as the trolled Ohimhave invented mnewnnd usefulElec- ,trrc Power-Hanmier, Of WhICh the following is a. specification.

My invention relates to improvements in power-hammers adapted for use in forging and otherwork requiring the use of p. haun- .-1'ner adapted to yield blows of varying intensity as the nature of thepnrtleular work to be done'mey require, and-lies peculiarrefcrence entioned in which an alternatingelectriocurrent1s used to sup- The objects of my improvement are to provide an electric power-hammer ndopted.

to beoperated by sin alternating current, the hammer being; ofmecuhnrly simple, compact cient and which me be fully and easily coni Qne ofthc importantohjects of the invention especially to he noted is to do away with the pistgn rod or other intermediate connecting means 'hetweentheram and that movable portion of the construction to whichthe power is applied. Heretol'ore much annoyance has been'caused the users of power hampiston rodjor connectingjnieans. ilnthe ronstruetion hereina liter set l'orth it will be noted that all of thennnoying diliieulties.hereto fore experienced by reason ol" theso called piston head eonstruetirm are wlmllv obviated. H I i llhese ohjeets, together with other objects readily lrw-a-renji. lo 'those'shillml in. the art, I

.accon'rplish by the construction illustrated in the ccconr;:nnyingdrawing, in whirh-- Fmurc is n lroht eli'walion ol' unelertrie V i i power-hammer embodying my lllVlllillOll,

. pnrts including the front "{:['llii2l-l' rolls living broken away to more fully disclose the construction. Fig. '2 1S lew partly in trans- ;verse vertical section ol the hummer illustratod in Fig. 1 lire. 3 is a herspectivr View either-emf Fig. 4- is zn enhrrgo'kl l'rngrniontars: view illustrating ekportion ol' the home I V Specification of Letters Patent. Appi iegtion filed my 19, 1909. SerialNorMZO'i'B.

' The numeralyl indicates.

reference to the said arms. .har 16 is arranged upon-end connected to the Patntd'AugBQlQQQ.

hammer which may be of thcforniillustrsted and preferably of considerable weight-and of great strength. Upon the base l'is suitebly arranged inany desired mechanical manner the anvil 2 upon which the work is intended to be laid. Mounted uoon thehase" 1L and connected thereto on both sides of thc'zmvil 2 are the vertical frame pieces and 4 the inner-sides of which are arranged in *nnrollel relation to each other and provided 'witli the vertical parallel grooves a'nd ridges .5 adgioted to guide the rain in the manner hcreinhftcr to be more fully described. Formed integrelly with the vertical iii-timepieces are; the forwardly and rearwnrdly extending: arms 6 and 7 at the too and 8 and 9 intermedioite the top and the base 1. The purpose of the said arms is to support the laminated polojni'cees upon which the primary coils are arranged.

The front-lnniinated pole piece 10 end the rear laminated pole pie cc 11 aloof s'uhston; tisllv the same construction; Encli; iicce consists of a built up or lan'iinsted structure, each of the lnmin-ations being nrofernhly stamped fronrsheet metal and of the fornr illustrated in Fig. 2. l\i'hen con'rpleted each pole piece presents eninnen ilot, vertically disposed face in which ardenttrm-isvei'se grooves vertically spaced fronr emlnothcr and adapted to receive the primary coils. .lt may also he desirehle to arrange the pole pieces with the vertically dis-posed slots From one arm 6 to the other ar nfh cxtends the front pole piece sup'nortingfhnr 1 3,,whieh extends through the said pole "piece tronsverse to the lnniinotionsnnd nuivhc located at the top end of the slot .12 il desirodl bolts l i. extend vertically through the bar 13 The and the arm 6 for the purposmpi' tif'lllllng the said hm" to the said arms. .lllxtending through tlnrlpole pieces l'roinside to sidennd transw-rsely with reference to the laminations is an aperture through which the crossbar 15 extends, thc'soid her being:securely fastened to the arms 8 in any :io'nroin'inte meclninirnl manner [or the "rt-F9030 ofpreventing, movement of the pole piece 10 with The supqiorting rem" arms 7 in it inaniuir similar to'that just pole piece 11 is supported upon the supporting bar 16 {L5 the pole "piece 10 is supported upon the bar 13. l iliewisothe crossbar 17 s' grnsggrfihT @FFWE? the .h as'e' of the i described for the crossbar- 13, and the rear extends from one arm 9 to the other arm Qfand performs a function with reference to said arms and pole piece 11 similar to that performed bygthe cross-bar 15 with reference to the pole piece 10 and the arms 8. It should be noted that the inner faces of the pole pieces 10 and 11 should-be arranged in parallel relation to each other.

The transverse grooves in the inner faces .of the pole pieces are preferably an equal distance-from each other and constitute two vertically arranged series oi such groovds,

' each groove on one pole piece corresponding to a similar groove in the other vertical series of grooves in theother pole piece. Arranged ineach transverse groove in the pole pieces is a primary coil 18, eachcoil'being separately prepared, slipped into its appropriate groove and secured in said groove in any .1 with the twelfth and so on through the series, 7 the said coils and connections being arranged suitable manner. The coils so arranged thus constitute two parallel. vertically disposed series arrarfged opposite each other and of similar construction. Vertical conin the manner common in the construction of three-phase induction motors. At the I upper end of each series is an appropriate three-phase motor triangular connection 19 forming the resistance inter-connection of the'last three coils of each series.

" It should be noted that the two series of coils are connected in parallel, the conductor 20 leading to the first coil on both series, the conductor 21 leading to. the'second coil in both series and the conductor 22 leading to the third coil in both. series.

Mounted upon the vertical frame piece 4- is a controller 23 adapted to throw e'c'urrent ofi, to throw it into circuit under great resistance, to throw 7 it into circuit under small resistance, to throw it into circuit without resistance and to throw it entirely out of circuit in the order mentioned. The'details of the construction of the controller are in no wise claimed in the present invention and, such details are therefore not shown or described. The conductors 24, 25 and 26 are adapted to cdnduct a tri-phase alternating current from a suitable generator to the 'con. troller, the resistance shown at '27 being thrown into circuit by the controller when it is desired'to have relative] small resistance and theTesistance 28 is a so adapted to be thrown into circuit when it is desired to have relatively greater resistance. l controller isoperated by the rotation of shaft 29 which protrudes from the controller case and is provided with the controller lever 30 fixedly mounted on said shaft. Formed in tegrally with the lever 30 the pointer 31 may be arranged if desired and a disk rovided with appropriate graduations, as ll ustrated at 32 may be provided over which the In the controller I lllustrated in the drawings when the pointer 31 is directed substantially in a' downward ointer 31 may move.-

direction the current is cut out of circuit. When the shaft 29 is rotated to bring the j pointer 31' to the first division of the gradua tions the-resistance at 28 is thrown into circuit. When the pointer 31 is brought to the, second graduation the resistance 27 is 1 thrown into circuit. When the pointer 31 is brought to the third graduation all resistance is cut out of circuit and the current isallowed to flow into the conductors 20, 21 and I 22 at the full strength at which it is received from the (generator through the ; conductors 24, 25 an to the fourth graduation or top the current is entirely cut oil. The shaft 29 is not intended to make a complete revolution but 26. When thepointer 31 moves, ,90

only a substantially one-half revolution. If

the pointer 31 is brought to the top or fourth graduation and then returned to the downward position first mentioned the current will remain cut out of'circuit durin the IG-r turn movement of the said pointer lowest osition. If, however, the ointer is tions and then caused to return, to the down- I om the 1 said fourth graduation downwardly toits roe ward or first osition the current will remain I in circuit an will be caused topass throu 'h 1 the various resistances denoted by t e graduations in the reverse order from that t m which they have been thrown into-circuit as the wardly. K The treadle 33 is pivoted to the basal at the points 34 and a wei ht 35 upon an exten:

pointer was-previously moved up sion 36 of the said tread e is adapted to main I V tain the said treadle normally in its upper...

position, in which position the operatormay readily depress the said treadle 33 byp'ush ing downward upon the same with his foot? Pivotally connected to the treadle 38 and to the controller lever3O is the connecting rod 37 The arrangementof said connects ing rod is such that when the treadle' 33 is depressed the lever 30 will be pulled downwardly, rotating the shaft 29and moving the i j; pointer 31 over the various graduations upon I the disk 32, as hereinafter described. It! r should be stated that the purpose of thetreadle 33 and the connecting bar. 37,is only forconvenience in operating thegcontroller 23 audit will be obvious that the treadle 33-- and connecting rod 37 may well be excha for some equivalent mec anism adap 5 described ltfslu I i thntii' thetreedle b so depr'essedns to stop 60 in circuit beoporsted by hand if so desired. It should also noted that the. controller 23 may be located at some'di tiinoe fromxthe power hammer, if desired 5 and 22and 24, 25 sndg zobeing extended and appropriately eonnehted to. the said controller located at a distance from the said stances it f may be ,waudlytrsvlling mng netic field will be pro- ,20 duced adjacent *thegtwo vertical series of coils the pole pie es, each pole piece with hus resembling to an f It should be note "thatwhen the treadle 25-"133is-i-n its upper osition andthe pointer 32 5directedsubstantiallydownward the current i will be out out-ociijcuit and no magnetism will be present -sdjscjent the pole pieces. If

now the treadle is depressed slightlyyfbring-H ithe first graduation srtion the resistance 28:

rcuit fand' a relatively etism' will beproduced 30 ing the pointer 31 be ondthe ofi wil hwthrown int small amount of m ad jacent the pole pie s H then the trcad'lc 35 is depressed until th second graduation on the controlleris reached the magnetism in the pole pioces willh'e increased by reason of the fact that theresistance 27 0111 will be placed in the'circu t. If the tread e is then 40 depressed until. the *thii'd graduation is xreaehcdpthe full steength' current will be conducted to the coilsjin the pole pieces and i the ifu-l l strength. of upwardly traveling magmnetic iieltl;willibe produced. lithe treadle be further (-lepressedfso as to bringthe pointer lit-to the fourth greglnat-ion or-uppermost a 'positionuthc currentfiw llbe-cut oif and the magnctls'nradgacentthe pole picccs mmediately discontii-rued,yllhetreadle maythen. ,be allowed to return to its upper {)OSltiOIl 1' travels again down while ;the pointer r '3 ,OH position, no curwardly to the lower rent being throw returnjol'f the edit "winter, as hercinbei'orc be noted, however,

the pointcrfli sh of the extreme upper )ositionQand then allower-llto rcturn to the ower otl' positionj thcfcurrent will remain I during the return of. the said 1 pointer,g the resis nccs 37 and 28 being thrown into circui nthe reverse order from that in'wl' ch tlicygverc thrown into circuit as the pointer 31; as previously moved scopes the conductors 20, 21

remove the controller necessary jarring incident to" an induction motor.

wear. 40 is a built up or laminated structure 421' "which projects slightly beyond theiront and "into circuit during the I being.

It should be noted that the controller 23 i may be .so arranged that the current mrty not only be thrown onwith varying resistancesnnd oiiegain, but may also be reversed,

and this reversal of current, by means of an appropriateficonstructron of the controller, may be accompanied" with the throwing in of appropriate resistances. The construc-j tron oi the controller,- as herein-before were tione-d, is not herein claimed as a part of: the invention and hence no detailed description of the same 1s deemed necessary. It. will beobvious, however; to those skilled in the art,

that the controller'msy be so variedin its construction that-the magnetic field edj acent the pole pieces may be caused to-travel either upwardly or downwardly and at varying intensities or may be cut off when desired.

i The ram consists of the head portion 38 to which the hammer 39 is adapted to be connected and also. the integral, spsced, unwardly extending side flanges LO'toaWhich,

as also to the head '38, are connected the grooves and ridges 41adapted to engage the grooves and ridges 5 in theirs-me pieces'S and 4 hereinbefo're previously described. It should be *IlOtMliJhfiit the grooves end-ridges 41 extend practicaliy the ful-lflength "ot the' ram end-that there is a plurality of such grooves'end ridges, such construction being preferable because of the accuracy of movement thereby produced: and also bemusef.ol the reduction of friction and of celpparcnt f x I flanges Arranged bGiLWE GIIZthB spacer rear er gcs of the saidflsnges, Intheflfront' and rear projecting portions of thelarni natedw providing for the inlaying of the copper bars 43, const1tu-trng-tir secondary winding.-

structure a transverse groovesefs cut thus" 06 each end of the copper bars; all of the hers-10f the vertical series are connected bythe bar L 44 in the manner well understood to those skilled in the art of induction motor building,

and 44 thus constituting what is cbmmonliy called a short circuited secondary. t

should be understood that thcstructure 42" is firmly fixed with reference to the fian esm 1 end thehead 38, and this is preferably etc-11;

cornplished by means of bolts or pins extends 111g transversely of the laminated sheets cone stityutinp; the structure 42 Land firmly designated by the numeral 46. thought desirnblc'to l'orn the laminated sheets 42 in two sccthins, as fully illustrated in, Fig. 2, the insulation 47 being arranged betwecn'the two series of sheets.

When constructed, the rain'should be irrranged between the vcrtlcal frnme pieces 3 and 4, with the grooves and ridges 41 in enfl con-L nectedto the flangcs ii, such bolt-so pins'fi i numbered 45 in th g drawing and; adapted to beentcred through the mperturefs J It maybe the laminated, structure 42 with the bars 453 ill:

' grooves and ridges 5, and he lure 43 locater adjacent the polopicces' ll.) and ii. .lt will thus be seen that the pole piece IEO together withthe adjacent side of the short circuitcd secondary constitutes one olcctro-niagnetic motive element, while the-polo piece ll, together with its adjacent portion of the short circuitod secondary circustitutes a second clectro-magnetic motive element, and that the magnetic pull of the appropriate hooks connected with a tackle may be arranged for lifting and-placing the said rain. it should be noted that when the ram is lifted from the frame work all parts of the primary winding willbe readily accessi lilo and that if desired. rains of dilierent weights may he usedon the same power hammer by merely lifti g one ram out of the frame Work andsul s'tituting another rain of appropriate weight for a' difi'erent class of work to he done. Such sul' stitution of rains unity also he found convenient if -for any reason the rain in use should become injured. Such'injuredranrs may be easily lifted out andjrepaired while a substituterain is placed within the frame, thus avoiding unnecessary delays for repairs. It should be especially noted in this connection that the said ram may be lifted out without removing or displacing anyof the parts of the hammer.

A power-hammer of the character de scribed having been provided a rain of appropriate weight should be selected and an ranged within the frame. The anvil 2 and the hammer 39 being properly placed ztnd attached andlieing of appropr ate shape for thework in hand the ram ere lifted at will bythe operation of the controller 23 through the treadle 33. The rain incl-y be lifted to the full height of thepolc piecesand allowed to drop of its ownweigl1t by bringing the pointer 31 gradually over the gradu'ations on the disk 32 until the said pointer reaches the uppermost graduation when the current will be cut out of circuit Ifdcsired, however, the ointer 31 may be raised but a few of the gra nations on the disk 32 and then allowed to descend, in which case the resistance being switched into circuit-in the inverse order from that in which it is switched into circuit by the' ascending pointer, the ram will be re tarded in its downward movement, thus do:

scopes sccnding with loss forceand speed, thereby dealing a blow of less intensity. If desired an appropriate controller may be arranged wherehy the current may not only be gradu- I ated-and out in and out ofcircuit, butalso be reversed, in which case therein may be but lay a downwardly traveling magnetic field similar to'tlic upwardly moving magnetic field by which the ra n is raised." It willthusi be seen that by properly controlling the triphasc alternating current supplied to the conductors 20, 21' and 22 the movements of,

the rain may be fully and completely C011",

trolled, we that blows of varying intensity and rapidity maybe produced'atthe will "of to operator. i l

While lhave shown and described my in.- venticn as being operated by a three-phase alternating current anrhsuch s the preferable: l J

construction, yet I do not desire. tob'eli'rn' itedto such construction, .as it is evident that the construction might be adapted for single or twophase currents" withoutdepartr ing from the spirit of'th'c invention. It

should also be'stated that by the use of the wordcontroller herein 1 do not desire to be limited to any particular kind of controller, as it is evident that 1n someunstancesla simple switch'or autostarter1m ht be sufficient to properly operate the (lY1C6 and that in anysuch instances the said switcher autos starter would'be such ac'ontroller asj'wo'uldf fulfil the spirit and meaning of the term com.

trollerasus d I the f desire to inter!v met the word controller as meam g de vice for switching or controlling the electric current supplied to the device.

I claim: c

1. An electric power-hammer comprising" I wound and conncctedin accordancefwith thrce-phae induction motor construction,

the coils in the series connected 11' paralleltoconductors of atr1-phase alternat1ngcurrent,. Y -l 3 a plurality of spaced, parallel series cf coils a controller arranged withiuthe circuitof said conductors forcontrolling the current supplied to the said coils aiidafram comprising a hcad,.a hammer andia'short circuited secondary connected to saidhcad, the said ram located between the said parallel series;

of coils andadaptcd to be moved in a line parallel with said coils by the traveling mag netic field produced adjacent to said coils by the said current. v I: r I

2'. An electric power-hammer comprising a plurality of spaced series 0i, coils arranged on pole pieces, thesaid coils wound, disposed and connected in accordancewith induction mo torconstruction, the coils in the different series connected in parallel to conductors of;

alternating current, a controller arranged within the circuit of said conductors for con v I trolling the currentsupplicd to the said coils,

hrougl tdownwardnot only by its own weight i ondary immediately connects the coils in the various sericsifconnectedin parallel to conductors of a tri-pha'se alternat mgcurrent, a controllenarranged Within the i circuit ofsaid conductors fo'i lcjontrolling the current supplied to the said'coils, and a ram 520, comprising a head and a shortfcircuited sec-' li-to said head,

the said ram located betwee the, saidparif allel series of coils and adapt 1 to he moved an a line parallel with said parallel series.

2,5 4. An electric power-hammer comprising a plurality of spaced series of jcoils'arranged 'on ole pieces, the said coils Wound, disposed anc inter-connected in accordance with in duction motor construction, the coils in the so different serles connected miparallel to condoctors of an alternating current, a controller arranged withiri thecirc lit ofwthe said con ductors for controlling t e current sup lied to said coils, and a ram comprising a earl 5 and short circuited secondariesimmediately connected to said head, each-rot said seccnrh ,aries located adjacent one offithe series of coils, the said ram locatedbetfween the said plurality of series of coilsand ladapted to he I moved 1n a line parallel withfsaid series.

5. In an electr c power-haninicr, in combi nation, a pluralit of vertically disposed series of spaced coi s Wound and'connected in accordance with induction motor construction, with a ram adapted forfWerticalmovement intermediate said plurality of series of coils, said ram comprising a head, a hammer connected thereto, spaced flaii cs connected to said head and a plurality offlsliort circuited 0 secondaries connected tosa" ,head, eacli of said secondaries being arrang d adjacent one of the'series ofcoils andfadapted to remain. adjacent the said series du g, the move ments of said ram. 9 i

I 6. In an electric power-hammer the comlhination of a plurality oflaterally s )aced longitudinal series of coils, (th coils of each series wound, dis osed" ncted in ace; cordance with in uetio'n inotor constmctio ,f

' and a rarnlocated intermediate the various laterally spaced series of coils and adapted for movement in line withftlie said series, the said ram provided witliwjshort circuited secondaries, each of said, secondaries adapted to be actuated by a corresponding series of ees f'r AVAlLABLE coca coils means for conducting" alterhating, on 4 rent to said' series of coils snd the' 'varioixsg series c'cnnectedinparallels :i "711mm electric ower hammer the comvbination of a plum ity; ofspaced,- paralleh straight series of coilsconstituting a plurality:-

of induction motor primaries and aramv lo-j cated between said spaced series and ads. ted for movement'in aline alallel with sa-i serie's, saidram provide 'With'a' plurality of secondaries, each secondary having its face I adjacent its corresponding primary parallel, with said rimary thevarious series consti tuting sai primaries connected in parallel;

rent to said primaries, whereby thesaid ram may be movedin a line parallelwith said s aced primaries and maintained in aco ition ofequi oise during said movement;

8. In an e ectric power hamrner a ram comprising a head, a hammer connected to. said head, spaced flanges connected to said head, a laminated structure arranged-lie said head, and a vertical seriesjof transversely, disposed copper bars inlaid ingrooves in saic laminated structure, and means for short circuiting the said bars. p i 9. In an electric power-hammer a mm.

spaccd:. :'vertical, parallel position; said pole pleces provided with, transverse slots upon their inner sides, avertical'series of coils a r ranged in the slots ofeach pole'piece, said,

ings,'a ramlocatedbetwen the spaced frame said ram'com risixtlg a head, a hammer. con; nected to sai hea 1 nected tozsaid head, said flanges and head mg to and adapted to slidevertically 1n the said grooves and fridges in the said! frame tween said flanges and connected .thereto, said laminated structure havin its sides- M ran ed closely adjacent the --sai H "pole pieces, sai structurei pro ideal withej transverssv grooves, copper a and means for conducting an alternating cur- ,853

, tween said spaced flanges and; connected to" comprising a head, a hammer connected-tote I frame pieces o r tending arms, front and reanpolejpieces' -l m'ounwdupon. said arms, and h d. in fixed,

,icoils being connectedj n ,accoidancc with I15 three-phase induction,motonprimary wind P196 and between ref r po e. Pie'ceflfl nd'spaced flanges eon- 12 :1"

)rovidedWithgroovesiandridgescorrespond pieces, a laminated structure located hen jf s inlaid inpaid grooves ,coils in thetwo vertical'serie s connected in parallel-to said conductors and-a controller and adapted for ontrolling the current con- 1 I ducted to the primary windings substantially as described;

5 arranged; in the circuit of said conductors of two witnesses.

In testimony that .l claim the nbove,1havej f l hereunto subscribed my nzm'le in fille'pl'eseneu I l? T AmmUs l5.

Witnesses: I I

IRENE LUTZ, v WILLIAM H. MILLER.

Plum;

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