1,900,488 thereby eiiablin,- proper control of the sprinpressur e to be 6bta-ined. Th6 post 25 is adapted to provide anchora (,e for the, spring 26 at a, point near the movLable eiid of the wllip ind for this purpose is ratde.6'f' 'W@o@a@ 'Witil, @@ heavy'bi@e 3i (Fig. 1) haviiig paralle'l 'Sides. fi-i@'fl-iis p@ef6@red g 0 1%' form of spring, the len tl-is f ire fori-ning the op.en -end pQrtion 28,: are substantially 10 strai2@-lit. @iid disposed in liorizonti,-l @,qrooves 32 foi-n,i,-d in the opposite sides of the post. The ends of the wire are bent.towltrd 'e,,tch other -ti-id project ii-ito the post ,tt one end @of the gi-oove thereby eff6c'tLit@lly an6hoiiii 9 I r) ";Ucll@ en(is. I At the opposite ellds of the ai-@ fii,mly <9,iiehored by groqll@-e t ie wi,r@s t46lis 3'3 @.rive'n into --th6 p6si'-@rith ihei.@ hea@is o@,erl,@,iiig the ii,ires. @.-tn tfiis N@ay t.h6 unsiipf the wi-res are @rmly lield pqrtect portioiis o 20 ' @ - @ I - i,ell @s ver-tical in6vement ,iga,ns. ;,,itera, as A uble wire conaiid this 6oribinecl[ Nviih the do strtiction gives a substantial de,ree:of lateral -whole en,,tbling i@iaiditi, to the spi-ii@g vs a the clo ti@6 pa@ts of sea eiid p6rtion 27 to be 25 i relatii@ely el e t the ost 25 aiid spapel Os, 0 p th@o - I ck 19 and yet maint,,tihed at all tinaos 'i ti otit 0''--'L rubbiiio, c@nta@t t@ere-@ith. It@vill'b@a@p@rentthaitheen'tireleno-thof spriiig-- befii,@ei-i tiie poii@t of contact witl-l tlle IcnLiel@le 18 clnd the p6int c tl-le 80 )f anch6raue in t 2@ is r@i@cte@ed eff.ective 'with the mount@,os @ng above deserlibe(l. ti-ius, the s P.,@in g polssesse@ @ -hiah (leo-ree@ flexi aiid f 6f is 0 @iitially tinifoi-iii sti@eii dless of t.@ 1 ". I @ . - -35 oi-,'dinary varia-uions iii c ancl m@illitin diii,ing i-iianuf acture,. @g this reasoi-i n4D p@ovisi-6@ xlo'r aci Listine t re-quire(I and spriri,@s of the saine size -wire may @e,ii@e@@[ @@r @ei-.erhl clif;'ei-e .,Tltl Aveig@.i'Led haii-iy mers'-and only f@w diffe@ent silzes 6f wire are i,(,4tiir@cl lo@ all 6f'the liaii-imers in the 13 ir@t t y aii6horii@g the sl@rino- at a I)o f @@i-n @i@e -,ih@@ pi-@ot 10 i@a@ is @cljaeent the j @ck 19, i't@ @iill be, @b-served th'at f L'ill - 415,,tdvanta6,@ is ta@6 @n oT- the LI-Dward i-r@ovement of the wilip in. Dending t,he sp,rino,, downivardly and tliereby iiiereasing t-lip sprilia ef ti 'i tiie tiine whe@ the sp@ing coines into p,lay i@@ sust@iining i@e weigh@- of 'tlie hammer 50 " @ : during recovery @f ihe jacl@. The'sprinff@ ma.)T tiler@-]@ore be r@ade 6f @iinimulti -@vei ht ana 9 iligil@ fi@xibfliiy tiiei@l,)i, m@kiiig f6r o_Teater . . I'll -. . i f - uni'Lorinit.y in t ie constrii4@tioii o the sIDrinos. @A-not'iie@ 'Y@ay @be of @@choiin@, in 55 @ase @f ti-,@ p ted iii Figs. the O$t. @5 -is 3@ an@d-4.' In t@is'i-nstaiiee"t-h6 (,,iicis 31' of the ivire, orminc -.iei sl)riiig are f tl, bent dowiiwardl.y iiito siibst,,i@ati,,illy i-iolit. r6lation Nvith res.,pect. to th@ @ -Do;,tion,s 9,8 and se60 @urecl to the post.in the same maiiner as in the fc@l'@i first-describecl whiel-i latter is pre,@-erre'd@ becalise of the a@e@t6@ iateril -ri,-idit y 6btainecl Tho p@o@t 25 is also titilized as @a@ metns for to th 1-i 't dui -y of the e aln,,ner excelp -inp-, recovei lacl@. For thi.s I)urpose the opposite sides of the post and the edge facing the jack 19 ire liollowed oiit to fori-n an iipivirdl Y, iiieline(I shoulder 35 whicli is I)added with i piece of. 70 felt 3'- iiiici is''C)f sufficient'l-ii,)@@l@ @@f 6Nerl'e the 16@ 2-1 of -tiie@ s])ri'ng an@[ s,,tn'ie gg i shown iig. 2@ Al) I Its icat@Oll of sprii-ig p I)ileq-sure f oli:am Ai: eii the i)arfg i er )vli a i(Il e.ppsiti tl ereb..y prev(,iited. With th @ I.. I @, - i@ , e @'ii6tildei- s loc,,ited, the of @attacliing, tl-ie td 36 is redticed to a i-iiinimuiii iiiasp inueli as it n@ay be applieci i-ii strip foriii to t pltii,alii.@, of @'@osts @dispose(i side b id y s e. Prefei-a,!)Iy the sh6tilder 35 @s foi@iilecl cn tile 80 I)OST @firee - i-,Ilr O' ])])Osite fi-oiii t@lie jctel@ iii order t@ fo@ii@',,ii@'obtus6 a,n(ri e NV'tli th' e' @side o-f the I)ost m,itli ivliieli i't 1'nt"ers ect,s tl-iei-eb), fLii@tl-ier, attaclimeiit of ti@e l@ a'(! 3@. tiie i)ai@ts t6 be iii idle I)o i on ti (Fi... 'tlie a etion operates as follows@ Wh@en the ey is del)ressed., the whip i s tlir ),rdly an it o nu W d ' s i-ti@ti6n trai-i@iiiltteci -iiiiier throu(ri-i the ja-,Ii:. The latte t.6 the hai r is Witlidi-av,,@ froin beii ,tl-i tl,6'b IKR ci@ie go e. Ut-t .11 18 is the 20 eii@a ges the stol) 21 and the t ii-ioiaientui-n o 1-ie haniiiier cari-i6s the latter @@'Linsi ihe sii'ing 2@ If @ t,l-ie blo w oiie 'is lield cle @@ a si@@r'@, tl-ierpaftQ@, the t6 ec@ 7 coiiies lilt( III,, y as sh6Nvp'iii -f 11 lines in Fig. 4 aiid the sprinU _e sl@iouldei@ 36 a cl t' '-)6 is mol@,ed aNA,@@ froni tl@ n ti-@e stop 29 tliei-eby exe t@Lii@o- it@ force 6n tli6 h@immer. lil@ siiiii ,tr iva),, is @h w in .0 n dotted olitliiie iii Fi@,-. 4, tli@'sl)rliig 9-6@is Oilt 100 6i! 6@nta@t @,it 1-i @li@ shou-Ide@ 36 aii(i en(,-t@ i tli(@ @@it,t lciiuclc@le i 11-@l@t bloi,- @ ii-ie Ice der eitlier of is @,in tions just the b@t(@l,, the col-idi cli oves oiit O.-F 1-iolclino,- r6latioi@'-ki-ith re- 105 P, @l-ie li'llinii@er the eiitii-e of the s to t, ie sl)r' h is tra@sf er@ed I ing 26 wliieli is of stifficien I t sire@o- , th@u_nder th6se conditi6ns to support ha-yniiaei, iii a I)ositi@n such that the upl, )er end'@f ti-ie'j a( ,Ii: may enter 10 beiiea'ih 'the k@7Lickle iS withoiit @ai@@ng the lattert@any,@p@@e6i@bledeg'@'ee. I n this ",@y tli6 i @61i @e' iat is, move@ bac'l,: covei-s qliie i:ly, t] -Lincf@r the! l@iiii@lile t.@e@eblr r@ali:ing 1)ossible . @, 11 a qtiic@@ repetitio@ of tl-.ie @lollil. Inasm-Lieli is 115 @116 @fo'P @9 is p,ositioned tlo limit t@e - illo@ @v-ement the sl)iof the l@4inn Ing Oa I)OIlit . t - I . where@@il-ie'j'a(',l@ just Jdiiickle iii r.ecoierin .!,Y, the OI)er@@@67 'S@lenses tli@'re,covei-y 120 o@ ii@e ja@l@ th'e. sa'.itie @is i.n conientiona. piano actioi@@@ usin@--'rel)etition lei'er,;. In this @va. ''Y th@, l@ey totici@ of @@esent day actio@s is C16sel.)r si e@l arlici @ll of i-he fu'rict@ions of the c6nve al' repetl,E'lon lev6r ,t@cl' associated 'o@m@d bv ihe sprir@g 26 pa,, ,,re P61.1 Whieh 125 C, '111 be nanufact@red 'and as@em3ieci i@il tiie, cleiion ,it t siibsta,nti@ll -@edii@ y e@l cost'. ei'al m.,a, iiy i@nvention. 1. In a @iano @6ti6n, the combination 'of 65 preventing app][ication of the @priiig' e':ffect a Pivotally m@-Linf6d h@mmer h,@vina buit 130
1,900,488 knucklel a pivo.tally mounie(i whip adapted from said whip adjacel.,it the jack pivot, an to be actuated by depression of a key, a, elongated p.iece of wire bent at its center to ]a,(-,k pivoted on the fre6 end of said wliip form a spring of the hdir-pin type having and adapted to engage at its free end with open and closed end portions witli the former - 7 0 .5 said knuckle, a post rigid wit,h and upstanding from said whip adjacent the jack pivot, Z5 d repetition ring bent inand aii elonolate Sp teriiiediate its ends to form an acute angle between its en(i portions, one of saic-I por1-0 tions extending in i direction generally parallel to said whip and ancliored in said post,, the other end portion@ of said spring extending DI substantially parallel to a line, throug. h the axes of said@@whip and hammer with its l@ free end adapted - to -engage said knuelle whereby to sustain @ thle weight of the latter during recovery of said jack. 2. In a piano action ' the combination of a pivotally mounted hammer having a, butt "uckle, a pivotally mounted whip adapted to be actuated by depression of a key, a jack pivoted on the free end of said whip and adapted to engage at its free end with said knuelde. a post rigid with and upstanding 25 fr,oin said whip adjacent the jack pivot, an elongated spring of the hair-pin type bent intermediate its ends to form an acute angle between its open and closed end portions, the ends of said open portioia lying on opposite 3o sides of said post and rigidly anchored therein, the wires formi-ng said @losed end portion being disposed on opposite sides of said post and said jack and adapted to engage said knuckle adjacent the 6losed end of tho 35 SPrlng. 3. In a piano action, the combination of a, pivotally mounted hammer having a, butt knuckle, a pivotally mounted whip ada ted p to be actuated by depressii@)n of a key, a j ack 46 pivoted on the free end of said whip and adapted to engiELge at its free e nd with said ki.iuckle, a post rigid with and upstanding from said whip actjacent the jack pivot, an elongated piece of resilient wire bent at its 45 center to form a spring of the hair-pin t ype bent intermediate its ends to form open and closed end portions extendino, at an acute arigle to each other, substantial lengths of the wires forming said open portion being 50 disposed in grooves on opposite sides of said post with the ends of the wire bent toward each other and projectin- into the post near one end of said grooves and tacks driven ipto th,e post adjacent the opposite end of the 55 grooves with their heads overlying the wire, the closed end portion of said spring being arranged for engagement with the un'der side of said knuckle. 4. In a, piano action, the combination of 6o a pivotally mounted hammer having a butt knuckle, a' pivotally mounted whip adapted to be actuated bv depression of a key, a jack pivoted on the free end of said whip and a(lapted to en-age at its free end witli'said 65 knuclde, a post rigid with and upstanding anchored in said post, said closed ejid portioii being inclined upwardly anil adapted or engagement with said knuckle during i,ecovery 'of said jack, and slioulders f oi-iiied at the upper end of said post for engaging both sides of said dosed portion' 5. In a pi,,tno action, the coiiibiiiation of a i)ivotally niounted hanimer having a butt kniiekle, a pivotally iliounted whip adapted to be actuated by depressioii of a key, a jack pivoted on the f ree encl of said whip and adapted to enga--e at its f ree end with sai I<nuckle EL post rigid with aiid upstanding froni said whip adjacent the jack pivot, an eloneated @iece of wire bent at its center to form a@ spring of the hair-pin type having IE5 open and closed end portions with the en o the wire disposed on opposite @ides of said post ,tnd ancliored therein to support.said closed end portioii, the len,-ths of wire f orming the lattei- being disposed on opposite si s of said post and jack and spaced so as to be out of rubbing contact, therewith but;engageable with said knuckle, and c-Lishioned shoulders f ormed on said post at the upper end thereof to lii-nit upward flexing of said V's spring. 6. In a piano action, the conibination of a pivotally mounted haiiin-ier havin- a -butt knuckle a pivotally iiiounted whip adapted to be actuated by depression of a key, a jack @100 pivoted on the f ree end of said whip and adapted to engage at its free end with said knuckle, a repetition spring of the.hair-pin type having an elongated substantially @traight closed end portion extending in a CWG direction generally parallel to a Iiiie through the axes of said han-iiner and "rliip and: adapted to enzaze ttie under side of said knuckle, and a singfe post i@i-aid with and upstanding whi pro7iding an anchor for the @,l@10 f ron-i said p open end portion of said spring and a stop for Iiiniting the up-vvard inoveinent of said closed end portion. T. Iii a piino action, the coi-iibination of a p.ii,otally iiiounted hamnier havln,- a butt C@115 knuckle;.a pivotally n-iounted whip adapted to be actuated by depression of t key a jack pivoted on the f ree eiid of said whip and adapted to enga-e at its free end with said knuckle, an elongated repetition Spring sup- @,@120 ported by said whip aiid having a vertically movable substantially straight portion adapted to engage said knu,ckle, a post rigid with ,Lnd upstanding, from said whip and having a shoulder constituting a stop for -- 125 limiting the upward moveiiient of:said,portion and formed on the side of said post adjacent. said jack, said shoulder extending acioss the entire Nvidth of the post and pro130 jecting beyond the opposite @sides thereof,
sfrip of cllsliioning mate@ial on the surf llee of s,,tid shoulder. 8. 1-n a pi,,ino action, the con-ibination of a piN,ot,,tlly iii6tinted 'hammer having a butt kntiel,-Ie, ,t pivota:lly iiiouiited wl-t' adapted IP to b6 iotuated by dep,ression 6f.a ke3i, a jack 1),iioted oil the f ree end of sqid whip and adapt6d t@o iio-a(ye at its free eiid ivith said e n t, I'D ort(!cl by -aii elon(-Yated re-petit-ion spring sup said ivl@ip and liaviii-@ a vei@tically p iliovable -,til,,)staiiti,,tlly@ strai;ht portloii ad,,tl)ted to eiigage stid knuel-,Ie and a post 1-i,c,id with aiid tipstandilio- froii@i said wlii @:1 - p and havino- an eloiiga d s I @,ext en - @e hol-i der d a, in' t,raiisversel@ 0 @cl post ivith its ends 9 pp6-je@ctin,( - bei7ond opposite sides@thereof and provid,in(, stopq foi- en-a(,in(, said, po@tioii aiid ti-ienr"@v : iirflitiiig @,upwa@5rd@@n-i6.vellient thereof , the plane of the sho-tilder. surite I e forininz an obttise anle with the sicle of the post froin iili@ich the shoulder is cut. 9. In a piano 'Letion, the coi-iibinatioii of a ,i)ivota.Ily iiiouiited hamiiier having a butt knllckle, t pivotally molinted -",hip adapted io be actii,ated by depressio-n o-f a li:ey d jack pivoted on the f ree. end of said whip and@id'Il)"ted to eno-,to@e t@, its f ree end with said li:n-LI61cle aii el@n@@ated repetition sprino; supported by sll-d wliip tnd havirig a vertically inovable stibstai-it'lally straight plortion@ adapted t6 engage said kiiuckle, and a post. rigid with ,tiid U-,ostaiiding @from said Nvhip and liavinw a d6wiiwardly facing. shoulder f orine,d by @hollo-,viiig out said post oii the @side 'g,long ",Iiieh said sp.ring porltion extends, ,t oecond shoiilder intei-sectin(y said first.iiieilI e @d f ormed t@o,n d shollder tin Y iiollowing out .t siclo of stid p.ost dlisposed 'transverselv of sa@id spriiig I)oi-tion @and clishioning meaiis .ec,-Lirecl to ,ilid extending along said seconcl shoulder .tncl o,@Ter@l,,iT,)pino- a portion 6f said @firgt, Ml entioiied shotilder. 10. In a pitno tet-.ion, the coinbination of a @@,ith i flange projecting therefro rai M, a haini-iier ha-vino, itslbutt end pivoted oii saicl fl'a.n.ge, @a key-aettiated whip, a jack pivoted on said Nvl-i@ip @and adai.,)ted to engage a butt knuckle on saicl butt end, an eloiigated repetiti n rted from oile of its ends spl!lng suppo 0 -50 by sii-d whip ,tn@d havinz the other end extendino, iii a direction substantially par allel to a@ line tl-irough the axes of gaid hamii,ier ELnd said v@l-ii and adapted to engage p said kniiekle and assist in the recovery of the j;ack the-reu@-nder, a screw thi@eading into sai,d flange betiveen the edoe thereof 'and the axis of saici li ainilier so a-s to be di @@posed 61 ose to said 1,,nuckle, aiid a button on,the end of 'd scr w p sal 6 roviding a cushioned' stop f or the "90 freel end of- said spring- and for, limiting the -withdraiviilg movement of said jacli:. It. in a. piiiao action, the combination of a pivotall-v mounted haiiimer having a -bitt kniielli:le, a pivotdhy mounted W'hip adtpt@d to be tetuated by depression of a l@ey .,i ick ree ii pivo ' ted oi-i tlle f @ e d of -said Nllbdp an,d adapted to engaoe at its free @@ud witli s.aid,l@n.-,icj,:Ie, a.post i-i'@-,,id with and upn III 1 sta;ncli g fro 's,,tid@ w-l-i'p acljacent the jaelk 1.), ct, an cloiigated ivi i-e ber beiit -i c iv , iiieni ilt r- 70 inediate its eiids@@to @forin tw6 siibstantially straiglit le,s proje.c-@ing toward said jack It an acute,an,-Ie rela-tive to etch other one eyte-ndiiag in a geiierally@liorizontal direction a,nd hft-vi,n- its fr4@e end aiiehored in said po.st 75 k@ ,t+. a' point sp@eed,,above said jack, the olther 0 said leas extending iip-,v f vlai@cily t@-ward @said j ttek ,tnd eiqgageable, adj,,t,cent its free @ end -.Nv said,-I@iiiiekle, aiid a itli 6u@hioiii@d sh(Ulder o.@i said 1-)6st actin,g on, said lagt inentioiried so le,)-,iiite ecl' e f rin iat the encls thereol to I'mit UP Nvard flexing tliereof., In testilii@ny whereof 1, h tve hereuntq af -fixed n-iys@ioiiature CHXRLES H. DASENBROOK. 85 90 95 100 105 110 115 120 1.25 1.30
