claim is:. 90 1. In a paiiic bar lock, ,L lock case mouiited - Ldjacent the edge of the door, a bolt pivoted to the cae:,e to move to protracted and ]@etricte @t positions by a rotary iiioveiiient, itie @ins to dog said bolt iii protracted posi- 95 tion to hold the door closed saicl bolt being adap ted to be retr,@teted by an opening n-iovement of the door wheii the clo(,Ygi'ng iueaiis is inoperitive, ineal'is to lilove said dog@-Yii-@g mem ber to iiiopc-rative positioii, s@ild ineans 100 bein g also coniiected to s,,iid bolt to actuat(, the s,,in-ie. 2 . In a panic b@ir lock, a lock case motintecl adja cent the edge of tlie door, @t bolt pivoted. to'tli e'ease toMONTe to protracted and re- 105 tract ed positions by a rotary movellielit, iiiea ns to dog saict bolt ill protracted position to hold the door closed. said bolt beii-ig adap ted to be reti-acted by aii 6pening irioi,oing iiieaiis is iiient of the clooi- whell the do(,Yg' 110 inop erative, iiie,,tiis to moATe said dogging iii,Dibei, to inoperatiare position, said meins ha)7i ng a lost .,Ilotion connection Avitli said bolt whereby a coiitinliecl iiioitement tl-iereof retra cts the bolt after said dogging i-iieaiis is reiidered inoperative' 3 . Ii-i a I)anic bolt lock, a case seciired adj,,tce nt the edge of the dooi-, ,i bolt piltoted to the case to iiiove to pi-oti-actecl and reti-acted posit ions by a rotary motion, and adapted to 120 be retr,,icted into the case l@).)T contact witli the door strike a doo-o'illg member pivot,illy mounted ii-i the case and ,tdapted to engage the bolt to dog it in protracted positioii, a paiiie bar moiintecl on tlio dooi.- aiid 125 ,tn operatliig i-od exteiidino.- longittidiiially of the door and actuated by slid pinic bar and colitr ollino, said d6g. 4 . In i 1:)aiiie bolt I.ock. a ca@,,e seeLire(I to the df)or near the ed(,,e thereof, a bolt iiiount- 130

-a 1,593,852 ed oi-i a pivo'L-. qxed in the casc, and adaptect to be swling aboiit its pii,ot 'co reti-acted posi.tioii by (!oiitact witli tl-ie slrike, iiieans to ui-ge said @)olt noriii-,tll.-@ to pro"racteclposi.tion, ,5 aiid iiieaiis to liold the bolt in said reti-,tctect positioii wlieii tiie ctoor is opeii. 5. Iii a door lock, t case, a bolt fiioliiii-ed on i fixed idii,ot tlievei-n to be iiioncd to i-etracted positioii I)y contact@ witli the cloor 10 sti-ike !he is opetied. a bolt ope-latin-- iiiembei@ slidably iiiotinted in t@he -in(I u connec'ce(-l to s(iicl bolt 'o fiiove @t iboi-it its I)iiot, ,iiicl iiie,,,iiis to bold s@ii(l. bolt, iii @@etractect _I)osl'cioii Ai,lieji the dooi@ is (1)(1111. 1 15 C). Iii i, I)aiiie bai- (i loclc case iaio,,i.,,itecl adjaceiit the edo,e of ttle (looll, a bolt 1)'Ivotallv ii-lotiiitecl aiid ,,idal-,)ted to J)(,e i-etracte,d 1,)y con@iic'L- Nvitli the sti,il@e, @i I I - .y operable bolt op,%i-,it-ii,,y iiieiiib er - m(,,iiiited 20 oii the door iDcl coniiected to said iolt-. iiieiiis to iioi-iiially tirgg, said I)olt to proti-actecl posii,ion, ajid i-vieads iiiclii(-Iiiig s;iicl 1.,)olt opei-:itii,ig i-ileiiaber to liold tli(, 1)olt iii @,,et'i-acted positioii agaiiist the ictioii of - i@irgin,,@)- 25 means wheii the door is ol)eii. 7. In ,i paiiie b,,ir lock, -a lock c@isc@ iiiotciited adjicent, tt-ie edge of the door. a bolt. i)iv-.,t,,tllv iiioiinted therein aii(i ,,(tai)ted to be retracte@l by contact -witli tlic,, a bolt-@ 30 opei@,,iting ii-ieiiiber ii-iotintecl on -lie door :tn(I coiiiiected to @i,,ilcl bolt, ,f)eans to iiornially i,trae s,,iid bolt to s-",iii-- ai)otit its pin,ot to protractecl positioii, aiicl iiieaiis to liolcl the bolt iii re[r,-Letecl positioii ao@iin,@t the action 35 of said iit- 'iig ineans wheii tl-ie dooi, is open, ,g] said jyie@ins bein,7 released t-c) pei,iiit protrcietioii of the bolt wh(,n the door is efosecl. 8. Tn ,t 1),inic bar locl@, ,i locli@ cq,.@e ii-iounted adj,,icciit the edge of tl-te door, a bolt 40 piN,otglIN, iiioiiiit(@d tliereiii, a I)olt ol)ei-atiiig .tiieiuber iiiotintecl on tbe, cloor ,ind coiinected to sal(-l I)oltl iiieans to iioi.-mallv i@,rge said bolt to swi-ng aboiit its pivot to protracted I)ositioii, @incl iiiean@-, to liold the bolt iii re45 tracted positioii al)oiit. its -I)ivot i@_v@iinst the ,,tct;on of siicl urg'ii- iiicaiis ivbeii the @toor is opeii, ,iiicl ii-ie,,,tns to cl(,,g saicl bolt iii I)rotracted position. 9. Tn a 1)@inic bat- lock, a locl@@ cise i-tiou-nttio (@d adiic(,iit, 1-1,,e ecl,-e of the clooi-, t bolt i),iotini,(,.d (n i fixed pivot tlierein, ,t bolt operatiii,(, ii-ioiii-ited on the cloor anct coi-iiie(@ted to s!licl bolt, iiieans to noriiially iirge s,,iid bolt to pi-otrtet-ed positioii, me,,iiis to 55 liolcl tli(,, bolt ii-i i-eti@,tetecl position a(,ainst the action of s,,t;d ui-@4ino- 1-ne,,tns iihen the dooi- is open. said iiaealis I)ein(, release(I to perinit protraelioi-i of the bolt - when the dooi.@ is closed, and ii-ieiiis to clog s,,iid bolt 60 in 1)roti-acted positi.on. iO. ii.@ ,t ptiiie bar lock, ,t case ad,,tpted to be i-iiotinted iii tl-ic ed-e o-f the cloor, a bolt pivot,,tily molinted iii the clse to swin,(Iv tboiit 65 its pivot and to contact with the dooi, stril,:e, a dog(-iiimember pivoted in the case aiid adapte(,'[ to dog the bolt in protractecl posiLion, 9 bolt operating iiieiiiber slidably i-i-iotintecl iii the case und coi-inected to the bolt t,) operate the san-ie, and clamping iiieaiis tipon srtid bolt oper,,it,ing iiiembei, to 70 eiigag(, s,,iid dog and ii:iove it to iiiopei-,,ttii,-e positioii I-)i-ior to the retractioii of the bolt. 11. Iii a paiiie I)ar lock, a, case ad,,ipted to I)e iiiotintecl in ttie edge of the dool-, a bolt 1)1'i,otai.lv iiioiiiit-,ed in ilie case to svvliig tb(ut 7,i 'Lts pivot-, in(I to contact witli the door g strike. a do(, in,, iiiembei- I)ivoted to the case aiid adapted to dog the bolt @ii-i protracted posi.tion, ,t bolt operatii)gii-ieiiiber sliclal.)Iy iyiouii.ted in the case 1),ivini)@ a lost iiif)tioti coniiectioi,, wit@li the bolt to operate the s,,ime,, :iiid ctiiii-riiiig iiiearis iil)on - @ai(i bolt oi)ei-ating iiieiiiber to eng,,tlcye saic-I dog and move it to ii-ioperative position pi-ior to the retractioii of tlie bolt. -1-2. Iii zi paiiie lock, a lock cas-, iiiotiiitcl c(i at, tlie, iipper c',!2:e of the dooi-, ,i, secoii(I lock case iiiotiiitect ,it the lowei, edge of the door, bolt opei.-ating meelianism moiiiited oii Cbe doc)r intermediate said lock cases, ,i boll. J)ivote(I to o-r s,,iid c,,ist,.s aiid adapted to cooper,,tte with strike members on the liiitel aiid floor respectively, doggiiig means to liol(t said bolts in protracted position, tetiia-tirig i-neans for said dop,,giiig iileans, 5 and Tneaiis to retai-.n s,,iid bolts in retractecl positic)l-l -when the door is open. 13. Irt a panic bar loclc, a lock case moitnted it the iipper edge of the dooi-, a secoiid locl@c case moiinted at the loiver edge of the 100 door, bclt ol)ei,ating meebl,ilism inounted oil tli.e cloor intermecli,,ite s,,tid locl@ cases, a bolt pivote@,t to each of said cases i,nd adapted to cooperite -witb. strike members on tlle lintel @ind floor, respect,ively, dogo-inv@ meaiis to 105 hold said bolts in pi@otracted I)osition, aettiating ir,,e,,iiis for said doggi-n,.)- meaiis, oi-ie of said bolts being retainecl by gravity into retracted position when the door is open, a-nd gaid bolt, -when in such position, ret,,iiiiin,,), 1 the otber bolt in retracted position. 14. Iii a panic bar lock, a, lock case iyiotinted adjacent the lo-wer edge of the door, t bolt pivotally secured to the locli@ case and , idaptecl to be retracted by ,t rotary motion, 115 a strili:e plate motiiited beloii, the door and having a keeper to cooperate ivitli s,,iid bolt, said strike plate being provided 'With a i-ecess extending on three sides of said keeper. 15. iri a paiiie L-,ar lock, a lock case ii-iount- 120 ed adjacent tl'le lower ed e of the door, a g bolt pivotally secured to the lock case alid adapted to be retracted by a rotary motioti, a strike plate mounted below the door and having a,keeper to cooperate -with said bolt, 125 said strike plate being provicled with a recess extendin on three sides of s-,iid keeper., 9 and th.,- bottom of said recess sloping up-Nvardl.f in ,tll directions a-way from said 150 keeper.

1,593,852 16. Iii a paiiie bar lock, ,t locli: case moliilted idjacent the loivei, edge of-, the door, a bolt pivotally secured to the lock case and adapted to be reti-acted by a rolari, iiiolioi-i, ,i, strike plate lilotinted b(@lo)v the cloor aiid havijig a keeper to cooper,,,te ivitli F,@,,i,id bolt, said strike plate beii-ig provided iiitli ,t recess, the bottom o-f wbieli extencis iipinal-dly iii all directioiis a,ivay froiii said l@eepei,. 17. In a panic bar locl@:, a loek case mounted adjaceiit the lower edge of tl-ie door, a bolt pivotally secured to tlae lock case aiid adapted to be, retraeted bv a iotary iiiotioii, a strike plate iiiouyited f@eloi-v the door and haviiig a keeper to cooper,,tte iiill-i stiicl bolt, said sti-ike plate beiiig pi@lovi(led -witli a recess in -fi-oiit of the keepoi-, ,ind t-,I)e bottoji-i of s@tid slopiii,r dowji",ai-clly theretowa.i.-cl, ivltei-eby tlic@ epJ of the bolt, in 2(l its moveii-ient to pi-oti@acted position, reiii,,tids closely adj,,uceiit the bottom of the recess. 18. In a paiiie bai, lock, i c@lise motiiii-led @idjacent the cdge of tb(@ dooi--, a bolt pivotally secured to the clse to move to proti-acted a-nd i,etracted positioiis bv a, rotary motioii, a strike plate i-tioi-iiited ii-i the door jaiiib and baviiig a l@eel)er to coopei-,,ite with said bolt, saicl @tril@c4 plate beiiio- proi,id(-,d with 9, recess ii-i fi-ont of the kec@pei-, tlie bottoi-ri of ivbicb slopes dowl-iwarclly theretoiv,,ii-d, and s@iid bolt being pi,ovided with a beveled face wliereby said face fits -,iii-igly against the bottom of the i-ecess -wheii tl-ie bolt is pi-otracted. ,@5 19. Iii a pai-iie bar lock, t lock c,,ise motiiited adjacent tl-ie edge.of the door, ,L bolt pivotally coiinected to -,aid case to iiiove to proti-a,ete@i positioii by a rotary iiiotion, t strike plate iiiounted adjaceiit th(, dooi-, and 40 provided with tL keeper to eiiga-e said bolt, said strike plate being provided ivith a recess forwardly of said keeper, and said recess being enlarged to extei-id 1,-Lterally beyond said 1,-eeper, wherebv dirt aceiim-Lll,,tted 45 ii-i froiit of the keeper @iill be foi-ced into the enlarged part of the recess by the movement of the bolt. 20. In a door holdiiig mech,,tnism, a egsing, a bolt pivoted in the casing to swino, to 50 protricted position, dogging meaiis on@the casing to dog the bolt in such protracted position, an operating rod having a lost motioii coniiection with said bolt To callse the retraction of tlle same, alid melns whereby the aettiatioii of said i-od will niove the doo-- 55 ging me,,iiiq to iiioperative positioii. 21. In a dooi, holdilig ilieehtnism, a ea', iiig, a bolt pivot,,illy mouiited iii the casing to s-widg to pi-oti-acted position, an operatin(y rod liai,iii(, a lost motion coiinection Nvith 60 said bolt to move the same to reti-acted positioii a do(,o,ing membeipivote(I in the casing in a superl)osed position i-elative to part of said rod to dog the bolt iii protracted positioii. aiid iiienlis whereby the actuation of 6;-) said roct liaoves the doggii-ig member to position to release, the bolt. 22. Tii a door lioldiiip@ n-iechanisi-ii, a casiiig, a bolt pivotally iiiounted in the I casing to swii-ig to protra(@ted positioii, :,in opcr,,ttiiig 71) rod liaviiig a lost inotion eoiiiiectioli with said bolt to iilove the,,-,,iiiie to i-c,,tr@ieted IDosition, a dogging membeipivoted in t]-ic c@tsing in a stiperposed position relatii7e to pai@t of said rocl 'lo d.og tlio bolt iii protracted 7 r, positioti, aiid me,,tns ivhereba, the actuation of said rod moves the dogging member to positio i-i to i-elease the bolt prior to the begiiiiiiii( y of the retracting movement. 23. In i door 1-ioldiiig mechaiiisni, a cas- 80 in,(,, ,i, bolt pivotally mounted iii the casiiig to swin(y to protracted position, ail 6i)erating rod 1-iaN,iiio- a lost iiaotioli coiinectioi-i with said bolt 'L@o ii:iove the same to reti-acted positioii, a doggiiig iiieliiber pivotecl in the cas- 85 iiag in a superposed position relative to part of s,,tid rod to clog the bolt in protracted positio n, means -hereby the actuatiol'i of said rod moves the doggil-ig inel-liber to position to rele,,ise the bolt prior to the begiiiniiig 90 of the reti-actii-ig moveiiaeiit, qnd meaiis to hold said bolt ill retracted position within the lock -when the door is open. 24. In a panic bar lock, a, locl@: case mounted adjacent the lower edge of the door, a bolt 95 moliiit ed i.n the, case adapted to be moved to protra cted and retracted positi.olis, a strikepILute mounted below the door and having a keepe r to cooperate with the bel.t, said strikeplate being provided with i recess extending 100 oii thiee sides of said keeper. In witness whereof, I liave hereunto set my hand this 23rd day of Augiist, 1923. JOHN H. SHAW.

Patented July 27, 1926. 1 593@852 1 U'NI@ITED STATES PA,TENT OFF'ICE. JOHN@ 1-1,. SHAW, OF NEW IIAVEN, CONNECTICUT.. ASSIGI@TOR TO SARGENT & COKFANY, OF 1,TEW HAVEN, CONNECTICUT. PANIC BOLT. Application filed August 29,'1923. Serial No. 659,956.. This inveiition relates to emerlyency exit locks oi, so-called panic bolt locl@s @f ti@e type whicli are applied to the door of school houses, theiters, dep,@irti-neiit stores, or other r, public bliildings for facilit,,tting exit ,vhere a fire or tl-ie like caiises pai-iie, and are iistially applied to one ot2 ,t ,tip of swiiiging p doors where one of the dooi-s normally reiiiaiiis closed. This inventi.oii i-clates more par'uiciil,,trlv to panic bolt mechaiiisii,i in which the doors are pi-ovicted witli bolts adapted to eiiua(ye e7, t5 keepei-s or strike plites on the lintel and floor, respectii,ely, ,ind ai-ranged to be i-eleased from said strike plates or keepers by the operation of, a paiii.c bar ",)R tl-ie inner - fac,- of the door. In some of its aspects, I-loiv,ever the prideiples of mv inventioi ar,.- I not limited to this type of @@A,ice, altl-tou(,h sliown in connection therewith ii-i tile acco"mpai,i3Tin,o,, di-awiiios. It quite often ocelirs iii case of a p,,tnic that so iiiiieli presstire is applied to the door as to render it iii-ipossible to witliclraw the -i ace virt of the bolts from their l@eepers oi 0 frictioii due to stielt I)ress-Lire. A bolt may worl@-- peileel-ly %A,hen beiiig tried o-Lit iiiider ordii-iary con@litions, biit Nvlien its oper,,itioii is attempted in a panic, the pressure ag,,tinst the iiiner side of t]-ie door ivill cause the bolt to I)ind so ti-glitly the keeper tl:iat it 0 is practically ii-n'p ssible to retmet it. iii siieli sti-ii(,tures to provide ineeli,,tnisiii wliereby tl'le bolts, wlien retrleted to permit the door to open, will be ret,i,ined in this reti@actecl position so that the dooi- will fi-eely close,, altlioti,o,h tisu,,Lll y a sl)ring is provided to Lit-(Ye t-,Iie bolts iiorm,,tllv to protr,,ici.- ,ed' posi.ti@n. In some inStaiiees, L deteiit is pi-ovided in the bolt case to hold the bolt in retra6ted positioii, an@l a Itig oistop is provided on the door frame to coact witli the detent wliei-i the door is closed to release the bolt and permit i.ts protraction by the actuatino- spfinol-. Siieh a i-ilech,,LDis@n, however, is more or less coii:iplex atid expensive and iiot tlways ositive in p operation. One object of my invention is to overcoi-ne the defects mentioned ibove ancl to I)rovide a bolt which will roll or swing pivot,,illv iilto its case otit of engageiiient witi-i tbe" door strike so as to be practically fi-ictionless in its operatioii. my in -itioii is to PI-nAnother object of vei vide a p,@Lliie bolt eclianisiii such.thlt p,,!esstire tipoi-i the door will tend to ur,(Ye the bolt to retracted positi.oli, instea@t of i)reN,entin,)- stich movemeut by catising the bolt to biiid egains t t,@,ie li:eeper, as h,,is been the case here- 6o tofore. Anot lier object of iii 'iivent'oii is to provide paiiie bol@@s foi, the upper and lower ed(yes of t dooi- i-vhicl,. -,vill iioriii,,LII-N, be retaiiied iii i-etractecl positioii wileii tli(, door 6,,i is opened @.itit -wil@l 1:)e nioved in ti, iiovel iiiaiinei, to pi-oti.-,,icted position A-Vheii the d6or is closed . A still ftirtlier ob'ect of i-iiy i'nvention is to pi.- ovide a foi-ii:i of bolt ,tnd coopei,,ttilig 70 dooj-- strike o-,- keepe,- si-,cli thit the operalioii of the ],)olt Avill telicl to pi:eveiit ace-Limttlation of dirt iii the keel)er ol)eniiio-, "-- A,;hicli would otliei,wise with the I)rotraction of the bolt. 115 To tliese and ()tbei, ei-ids, tl@ie iitventi0ii consists ill the llo-,Tel ai-id coinbliiat-,i.ons ef pai-ts to 1),-, liereiii,-tf'L-,er described and clliiiied. In tLe ',-tCCOMPL)Dlli-iig drawiii(ys: 80 Fig. I is a fj-ont eievatioii,,@tl of @i door proii.de,,l a eii,ib(;Ctylllg lily iiiiproveiiielits, Fig. 2 is i, si--Ie elev,@,it;.cilitil vie@i, of lily panic bolt soi-tie o'@' clie, lieing slioAv.') i,,i section oii line 2-2 o-'l Fio-, l-, Fio-. i) is @l. vi(@)), sil)lll,,tr to F.I(. 9- slio - in- th.e pirts as the (lo,)j@- is being opeiied; Fig. 4 is @,t sectioll@Itl A,i:ew o@f my paiie bolt iiiecliaiiisjii, slio@Niiig the pftlts a-, the ctoor lii@ is abotit to, be closed; 5 is a fl'on(. eleN7ati.o-i-ial viei-v of the panic bolt iiieclitnism iiith tl-io cover of the ease of the lo\v(,,i- bolt reiiioa,ed; Fig. 6 i.s a sectional vi,-,w of the bolt mech@),i anisiii at the bottoi-ti of the door, tliie part.Q wlien tlae 1,)olt is iii protracted position; F',t),. 7 is a sectioi-i on lilic 7-4 of. Fio;. 5@ slioia,ing the I)olt i n i@etr.,i(,tecl po,@itioii: Fig . 8 is ,t sectiol.-i Oil Iiiie 8-8 of Fig. 'I-) Fi 9 is a IT:EW on Iiiie 9-9 of Fig. 5: Fi,- )-. 10 is @t tol) pltn vieiAT of the dooistii.i@(@ oi'keel)e@ sectired iii the @ooi- oi, 105 thi-eshold; Fi(y. 11 is i, side elev,,,itional A7iew of the saii-ie. I han,o slio%vn at 10 -Ln(i It a pair of doors, -iiiioiil,, u siicli @,ig ,ti@e coii y ii@-,ed iii ptiblic b ild-

1,593,852 ings, the door 11 being desigiied to remain iioriiitilly in closed position. The panic bolt structure inel-Lides a bolt mechanism general.ly design,,tted by the numeral 'I-9, adapted to cooperate ivith t strike plate or keeper on the Iiitel, and the secoiid bolt rpechaiiism 119) designed to cooperate Nvith a keeper in the floor or tlireshold of the door. These bolts are adapted to be oi@ei,ated b.), irjearis of a 10 lever or panic bar li pivoted to aii escutcheon plate 15 and to a case 16 seelired upon the door ivliieh encloses the opei-ating mechanism for the bolts. The eiid of the paiiie bar ,tdjacei-it the case 16 is provided -with a finger 17 iihich exten\is into the, case i-.nd is adapted to opertte t'ie bolt coiitrolli-.ng rocls oiplvtiigers IS aiid 19. TI-iese rods extei-id -witliiii the c,@ise 16 aii(I are, tlierefore, provicled ivitli latei,all)7 (,IiS@)0 i)osed Itigs ')O tiid 21 ' i-espeetiA7el,)7, eitlici- otie of 'which the ftjiger 17 is adapted to eiigagc,. -ieclianism -w The ii ithin the case l(i iiiay 1)(,. like that shoi-,n in the patent to H ' G. Voight,.-LN-o. 1,315.,841, th-e rods 18 and 19 are coi-inected by a'-%valkiiio,, beaiii so that ivhen oiie is iiioved i-ipiaardly, the o'Lher is moved downwardly, to siii-itiltaneotisiv, protract or retract the bolts on the ii p@ip and lo-wer edges of the cloor. The lug 20 ig -0 tttachecl to tl-ie uppei- rod IS and tlie IiiL@ IZI to tlle I.o-%i,er rod 19, ,@o that, as slio-v,,ii i ii FA i .;). 3, a ii:ioieiiie@it of t]-ie lever 14 doAiiiwardIv frojii the noriiial I)osition @,hoivii iii FiL,,. catises the fli-i(,er li to move the Iiig 21 iiid, .5 there,foi-e tll(, i@oct 19 i@il)wi,rdly and tlirolit@1.1 the AAalkii-ig be@iiti refei'lled 'to. caiises a sitii,,ittaneotis downA@)4rd i-tioi-ei-nent of the i,oci to reti-,tet tl-ie bolts from eiigageii@ient the ]Keepeils. A iiio-,-ei-tielit of' tl-ie patli@e: btr 14 i-ipiy,,ii-dly fiom noriiial positioi-i, is sl-IOA-Vll @iii Tj'ig. 4, causes the s,,iiiie iiioi-eii-ieiit of tlic@ ilocts by exertiiig a doiiiiwird 1)re@stii@e oii tlie I ii,- ,;.20 seettrecl to the roci 18. AATlieii tlie t)anic 1.)ar ig i-cleased, the rods a,re iii,ged toi'var(,l the ed,,@es of tl-ie dooi- to proti-act t'iie J@olts b,), tile coil sprincy 22, ilJ of )Yh@eli i.9 iiioi,e fti]13, slioavn ill the Voiqlit p,,ttei-it, aboi-e referred to. The tipper bolt nieellaiiisi-ti 12 I)c o-f50 the tll)e sliown iii the apl)'Iicatioli of AATilli,-iiii ,T. Ci,rroll, Sei,ial No. 659,969 filed Aii-tist P@9, 192'a, ia-liereiii @i I)olt 23 of @',]I,i,pe is pin,oted to the c,,.tse at 24 aiid pi@oA7ided ivith a slot 25 to reeeii,-e a liorizonti,llv '@5 d'spos I ed post (not sliown) seciii@ied to tl@e Iceel)er j)late 9-6. Tlle iil)per eiad of the ioci IS is provided -with ,i, dogging member '-)T wliieli i(-@ adapted to ii-ioa,e upivardly beli,'iad a sliotildei, 28 on the bolt 23 inbeil the dooi.tiO is ]I-lo-%,ecl to closed position, aiid the bolt is protracted. This do(ro-inoiiieliib(,i- I)y eilga(,in,,- beliiiid the shotil-der 28, iiitintaii),-, tile bolt ag,.tii-ist beinp, tiii-n;ed to proti,acte(I i@)osition 1)1, I)L.esslli@e upon the d oi-. lvheii, 0 65 hoi-;eN,er) this i)ieiyiber is Ivi@L'li(Trawn I)y tlie. aetti,,,ttion of the rod IS 'k).), the panic leA,-ei@ 14:. the bolt i,@@ fre,? to ijiove to a posit'lo)-i slio@vii iii ri ig. -v,,Illei-eiii the clooi1,@ i-elea-,e(l oil tl)e tol). In this position do!-Tgllig iiiembeiei -igages beloni, the lo-%Yer side oT the bolt aiad the i-ocls IS ai-icl 19 ai,e pl@eN-el-itel -i'i'oill iiioving outavardly ttndei'Llie in'@ii-teiicc, o-l' tlle spriiig 29-. The bolt 23 aiid, like,,v,se, bolt at the loa-ver edo-_-e of the dooi@, to IC', (,Ic-,-,cr]Led liereiiiaftei,, ai-e tlitis I)rc-A-eiite@l fi@oi-i., be'tn(y pi,otracted tint@ll the c ooi- i@,, ag,.iiii closed. The lo)yer bolt mec'ilaiiisiii clesi,-,,nated (-eriei,ally bv tl-ic iitiii-eral 1.3 coiiil)i,ise,@ a Clisc-I o,i, to tiie loiver ed(,e o@f i-.,-Ii-;ch is pi-@@oteC[ a@L3@ a bolt Tiiis'bolt if@ ,t(- Iiptecl to liaa,e @t pivotal or 1-ot,,ti.-y aild is ed ivitli a i,ecesf, i3-@.t in whicii is i,eceive(I end ol' a Iiiii@ 35 whiel-.t is PiN-o'Led to tl,.e 1)()]@ At its otlici@ (@iid, the lijil,@ e,5 is (,oil at '3(i. iiecte(I to @@, I)olt, oi)el.,Itill,',! olo@A-ei, eii(i o'l' the -)t sec,,ireci to the I i,od 19. This sli(le is iii [lie case 31, I)et@i@eeii i I)air ('I' 0,'Uiie,,; aiict 39 exteiidiii loja,),itu(iinall,), of tlic, in(,, aiid is fi-irtheii (Yitlcled iii its ,iio)-e,,iieni:@, bv iiieaii@,, of oppositely I)i,ojecti.ll(- a@cl 41, the f@opmer 'c)eiilg a(lipted 'L-,o the iiiioei@ siti-face ol. the co@-ei- ol' the \Tlill.e the ltttei- opc@rit(,,s iii a slot 4-2 in tlic, I)ase, I)Iate z]3 of the Iii the lo-wei- elid oil the o 1)(,@ 3'i is provi(led i slot 44 to i-Ibc@ .1 acent eDd of the Iiial., the IiiiAi, b(,,@iiir P"Ovideci Nvith a soiiieiA71iat eloii(- ated ,@lot i,,-hich receiies a piii 4'i sectir(,,(l to the iiioiiit@er 37, so as t,o pi-oi,ide a, loose oi@ 'to@,,t iijotioil coi-inection betaieen the operatjiitMeijiber 37 and the bolt 3i'). Aboi-e the operatin,-,, iiiecli@iiiisii-i t oi- dogging gtirriip 50 is piiotecl to se, upoll tlle piji 51, aiid ,-L spri,ii- 52 Nvotitil ibout tbi@, piii and i,e-a(,tliig ag@tili@@t ca-,(@, aiid agaiist @l ,,Iiouldei, r)3 oii the @3tit-i-tip iiieiiil),ey tends to hold this iiieiiil)el, ill I 11,@ pi-essed position, is sliown iii Ii",Y. C). stiri-tip inen-iber is provided it it,., to@%-Cl@ ell(! -",Itl-i a ei-oss piece 54 adapt-c(l. to @)0- hind the bolt 33 to doo- it iii I)Poti-,,ictecl i)osition. It will be apparent that otliei-ivise 115 bolt could be sayuii(- to rett-zieted positi(ii merely by aii. openiiig -tll)oll tlle door. The iiieixibei, ")4 iiia.)r ID,,, 1)ev@,,I'e(l tll)o"). its lower surface, I as sliown at so Ili.,I t It, 12(, ii@ill ride easily ovei- tl-ie bolt 33 ivlioi) once its edge is raised abol7e, tlle ,@d-e of 1-11i. bolt. The stii-rup 50 is pi-OA,ided witli 11 seco-.nd cross bar or ineiiib(@iits length, which is adaptecl to r,@st iii)()ii a beveled shoiilder 57 1)i-ovid(lcl til)()ji "I 1)(I-- tion of the operating iiien-ibei. 17. It will be observed that when the opc-i!atiiig rod 19 is drawn upwai-dly, tl'le @,houlder 57, b3,- ei-i(g,,ao;ement Avitli the ei@oss 56, -will cau-se the stirrtip 50 to be rai@sed, 1,10

1)593,662 ,ts si-iown in Fig. 7, tintil its low(,-r ed<,)-e is aboi,e the rear edge of the bolt 33. Due to the form of. oon-iiectioii betiieen the stein 37 and tlie Iiiilc 35 p,rovided by the elono-ated 6 slot. 46 and pin 47, tl-iis i-ii@,veiiiient of the stirrup Nvill be effecteet prior to the be,,,),,iniiin of tlio retractioii of- the bolt by the link which takes place upoxi a eoiitiiiuecl movement of the rod 19. While a coi-itinued I t) iaioveiiient oi" this rod -will, of course, reti-act the bolt b.)T SIA'ill@,Yillg it pivotally abotit tl-l,e pin 32, in practice slich a,ii opei,atiod -will I)robably iiot t',,tke 1:)Iace, ,is ironiediately the cross i-nembei, 54 of the stirrup is i-iioved 13 from its clogging I)osition behiiid the bolt 33, the bolt will be retractecl by eii-agei-iieiit -witli the keeper upoi-i .in ol,-eii;iig moveiiiei@t of the clooi-. That is,, if pi-essi-ire is ,tppliod to the dooi- in an openiiig dii-t,etion, the bolt -will be f ree to swing iiito the lock case, as shown in Fig. 7, and this movement ivill, of coul'se, be e ff ected b)T tlie, keepe,,. When [he door is opened, ilhe rod 19 @nd with it the rod 18 -will be retracted, ancl both will be 1:5 retaiiied in this position due to the coiitact of the dogging member 27 -with the lo-@ver side of the up'per bolt 23. This series to i-etain the bolt 33 in retracted position -Liiitil the door is again closed an(i the bolt 2'0 snvullg tipwardly about its piv6t, so th,,it the dog 27 -will be ' ermitted to niove iipwtirdl) p T behii-id the sl-iotilder 28. li-i this manner, the bolt 33 is prevented froii-i gouging the floor wlien the door is swingiii- to a!iid -from closed position. Secured iii the tl-iresliold or floor below the lowei- eclge of tl-ie door to coopei-ate witl-i the bolt 33 is a strike plite 60 of novel construction pi-ovidecl with a recess 61. This recess 61 is relatively deep ,it a poiiit de.,;igiiated by the nuiiiei-,il 62 whe@t-,,- it is proaided witl-i an abrupt iertically disposed shouldei63 coopei,ates wiih the bolt. Froni the poii-it 62, the bottona of the recess slopes ul)wlltilclly tow@- t,rd the i-ear edge 64 of th6 i-ecess aiid also in a lateral. direction toivai,d t]-ie sides 6r)' ai-id 65,1. The froiit edge of tl-ie recess 61 is not p,,trallel with the froiit od@,,e of the strili:e plate, is the sliouldei@- (i3 proj(,cts ii-iA),ardly beyoiid the adjacent eclges of the recess to ldrovide tl-ie taio lobes 66 and 67, the edges 68 and 69 of wliieb extend foi-wardly beyond this sliouider. The ile,stiltiiig confor!@lation pi-ovides that tl-ie deepest part of this recess is at the., sl-ioulder 63, and the bottoiii of the recess li,,ts a somewhat gradual si.ope upwai-dlv fi-oiii t.Iiis point towai'd the ddges iii all directio-.ns ai@,@y froni this shotilder. As a res Lilt, when the door is closed aii(l, the bolt 33 rele,,tsed so that it inay bo proti-acted by the sprino@ 22 and the force of (,Yl'al7ity, the bolt eiiters the sti-ike opening) @ Nyith a rotai@@7 or o,oii(-'ilg motion, Wliicl-i ser"Tes to 'I L@l U5 push apy accumulated dirt from in front 6f the keeper shoulder 63 outwatdly irito tlie lobes 66 Lnd 67. As the bottom of the l@ecess slopes iipwardly all about the eiretimfereiice of these lobes, the cl@.i-t is crowdect or pushed out of the strike opeililig alici TO does not remain coliapreted a(-Yiinst the keeper 63 in the pa:th of the bolt. The projection of t,lie IKeeper 63 iiito tl-iz@ recess beyond the, front edges 68 and 69 thereof permits the dirt or d-List accui-iiulateci iii the 17,eeper 75 Ope niiig to be plished olitwardl..),- cii-id f6rward l3T at a poii-it ,tdjacent the slioulder 63 aiid tends to prevent its accuiiliulatioil ill front of this shoulder. W hi-le I have shown ,tiid described a pre- 80 ferr ed embodimelit of my inveiltion, it -,Vill be understood that it is I-lot to be limited to all the details shown btit is cal@able of variation and modificatioii -witl-iin the spirit of the invention anti within the scope of the 66 appe i-ided claims. Claim,-, on the iiiveiitioii of t.he keeper are pres ented iii iiiy co-peiidill@,, @tppl'cation, Sorial 100,543, filed Ap 'I 8,- ri 1926. W hat I