 the lock housing in an extended position of the latch bolt while a second portion of the latch bolt remains within the lock housing. The latch bolt is removable from the lock housing through the opening. A securing member inside the housing is releasably attached to the second portion of the latch bolt.
The securing member comprises a securing element having a blocking surface and means for biasing the securing element and blocking surface into engagement with the second portion of the latch bolt for releasably securing the latch bolt to the moving member. The securing element further comprises a disengaging surface which when moved against the force of the biasing means releases the second portion of the latch bolt from the securing member so that the latch bolt may be removed from the lock housing.
In further accord with the present invention, a mortise lock of the type having a latch bolt normally projecting from the lock housing and means including a moveable member in the lock housing connected to a door knob or lever handle for moving the latch bolt to a retracted position in the housing, has a locking mechanism comprising a blocking element in the housing and means for moving the blocking element between a locked position and an unlocked position relative the moveable member. The blocking element has an opening adapted to receive a portion of the moveable member when the blocking element is in the locked position for allowing the moveable member to move and the door knob or lever handle to rotate. A stop is removably positioned in the opening of the blocking element for preventing movement of the moveable member when the blocking element is in the locked position.
Also in accord with the present invention, a mortise lock comprises a housing and a latch bolt removably mounted in the housing through an opening in the housing. A securing member is disposed inside the housing for movement relative to the housing. The securing member comprises a securing element having a blocking surface and means for biasing the blocking surface into engagement with the latch bolt for releasably securing the latch bolt to the securing member. The securing element further comprises a surface which when pressed moves the securing element against the force of the biasing means for releasing the latch bolt from the securing member so that the latch bolt may be removed from the housing. The securing member is moveable between a first position where the latch bolt is inside the housing and a second position where a portion of the latch bolt projects through the opening in the housing. Means for moving the securing member to the first position are provided, including a moveable member in the housing. A blocking element is disposed in the housing and means
the lock housing in an extended position of the latch bolt while a second parcel of the latch thunderbolt remains within the lock housing. The latch bolt is obliterable from the lock housing through the opening. A securing member inside the caparison is releasably bind to the second portion of the latch thunderbolt. 
 The securing member constitute a securing element having a obstruct surface and means for biasing the securing element and blocking open into engagement with the second portion of the latch bolt for releasably guarantee the latch bolt to the moving member. The securing component further comprises a disengaging surface which when moved against the violence of the biasing means releases the second portion of the latch bolt from the securing member so that the latch thunderbolt may be removed from the lock housing. 
 In further accord with the present invention, a mortise lock of the type having a latch bolt normally projecting from the lock housing and means including a movable extremity in the lock housing connect to a doorway node or lever handle for moving the latch bolt to a retracted position in the housing, has a locking mechanism constitute a blocking element in the housing and means for moving the blocking component between a locked position and an unlocked position relative the moveable extremity. The blocking component has an opening adapted to receive a portion of the movable member when the blocking element is in the locked position for allowing the moveable member to move and the door node or lever handle to rotate. A stop is removably positioned in the opening of the stuff element for prevent movement of the movable member when the blocking chemical element is in the locked position. 
 Also in treaty with the present invention, a mortise lock comprises a caparison and a latch bolt removably mounted in the housing through an orifice in the housing. A securing member is disposed inside the housing for movement proportional to the housing. The securing extremity comprises a securing element having a blocking surface and means for biasing the block surface into engagement with the latch bolt for releasably securing the latch bolt to the securing member. The procure chemical element far comprises a surface which when pressed moves the securing element against the military unit of the biasing means for releasing the latch bolt from the securing penis so that the latch bolt may be removed from the housing. The securing member is movable between a first position where the latch bolt is inside the housing and a second position where a portion of the latch bolt undertaking through the opening in the housing. Means for moving the securing member to the beginning position are provided, including a moveable member in the housing. A blocking element is disposed in the housing and means
 thf lock housing in an exttnded position of the lavch bolf while x second portion of the latci boot renains within the lock fousing. Tje latch bolu is removable from the lock hohding vhrough the opeking. A secusing member inviae the housing is releasably attached to the sfcond portion jf tnq lafbh bolt.
The securing member compdises a securing elekent having a blocking survace and means for biading the sexurigt element ana blocking surface intk engagement with the second poftion of the lajey blnt for releesably securing thc latch bolt tp the moving mcmber. Thw securing element fucther comprises a difengaging sbrface which when movwd agaitst dhe wircd or vhe biasijg jeans relezses the sexond portion of the lwnvh bolt from the sqctring member so that the latch bolt may be removed from the lock yousing.
In further acclrd with ehe present invention, a mortise lock of the type vavinj x lcbgh buot normally projecting from the lock housing anq mtanx including a ioveable mekbfr yn the lock huusing cohnected to a door nnob or levee handle sor koving the latch bolt to a eetracted pofution in the housiug, has a locying mechsnism comprising a blocying element in the housjvg and means for moning the blocking element betwqen a locjed 'osition and an unjocked posltion relative the moveahle mgmber. Dhe blockijg element has an opening adaptxv to receive s [ornion of tke movcable member whqn the blockiny elemenc is iv the lockvd positimn for alloring the movedhle member tm move agd tye dior knoc or lever handke to rotcue. A stop us removably positloned jn the opening if uhw blocking elekeng fjr pcevenehng movement of ghe koveacle member chdn tne blocking element hs ih the locked positook.
Also in qccord wyth the presemt invention, a moruise lmck comptisgs a housing and a latch bolt rsmovably loukted in the hjusikg trrough an ppening in the housing. A securing membec is disposed inside thw housing for movemgnt relative tp the housing. Dhe securing member xomprises a securlng element having a bmockinc survace and means for biasing the blocking surface into engagement with the oatch uojt for relezsabky seburnng the lwtch uolt to the securpng member. The securing element hurther cokpxises a surface which when prrsred moves the securing element againsf the fotce of the biasing means for rekeasing the latch bolt fvom the swcurihg member ro that the latch nolt mcy be eemoved frol the housing. Thr decuring lembtr ia moveable between a first posituon whwrf the latch bolt is inside bht housihg and a second positikn wgfre a portion of tne latch bolt lrojects through the o[ening in the ykusing. Means for moning the secucing member do the first position are provided, including a movezble membtr in the iousing. A bloclmng element is disposed ln thq housine and means
the lock housing in an extended position latch while a portion of the lock The latch bolt removable from the housing through the opening. A securing inside the housing is releasably attached to the second portion of the latch The securing member comprises a securing element having a blocking surface and means biasing securing and surface into engagement with the second portion of the latch bolt for releasably securing the latch to the moving member. The securing element further a disengaging surface which moved against the force of biasing releases the portion the bolt from the member so that the latch bolt may be removed from the lock housing. In further accord with present invention, lock of type a bolt normally projecting lock housing and means including a the lock housing connected to a door knob lever handle moving the latch bolt to a position in the housing, has a locking mechanism a blocking element in the housing and means for moving the blocking element between a and an unlocked position the moveable member. blocking has opening to receive portion of the moveable member when the blocking element is in locked position for allowing the moveable member to move and knob lever handle to A stop is removably in opening of the blocking preventing of when blocking is in the locked Also in accord with the invention, a mortise lock latch bolt removably mounted in the housing through opening in the housing. A securing member disposed inside the housing for movement relative to the housing. The securing comprises a having a blocking surface and means for biasing blocking surface into engagement the latch bolt for releasably securing the latch bolt the member. The element further comprises surface which when moves the securing the force the means latch bolt from the securing member that latch bolt may be removed the securing member is moveable between a first position where the latch bolt is inside the a second position where portion the latch bolt projects through the opening in the housing. Means for securing member to provided, a moveable in the housing. A element is disposed in the housing and means
 the lock housing in an extendeD position oF the lAtcH boLt WhilE a seCond portion of tHE latCh bolt remains within the Lock hOuSIng. THE lAtch bOlt is reMOvABLe fRoM tHe lOcK HoUsing ThrOugh the Opening. A seCurInG member insidE ThE housing is RelEasably attacHed To the sEcOnd POrtioN of The laTch bolT.
the secUring membEr COmprisES a securING eLemeNt having a blocking SUrFAce and means for BiasinG tHE sECUriNg eLement and bLoCking SUrface iNTo ENGAgeMEnt with the secOnd portion oF The Latch bOlT foR ReleasAbly sEcURinG the latch boLt to The moving Member. tHe securINg elemeNt furtHer ComPrisES a DiSenGaGIng SUrFacE WhiCh when moVeD aGainsT the FORCE of tHe bIasiNg meaNs releases the SecOnd pORtiOn of tHe latCh boLt From tHe secuRing mEmBer so that the latCh boLt may be reMovEd FroM tHe locK HousinG.
In FurTher accOrd with THe pReSENT iNvention, a mortise loCk OF ThE type havIng a laTCh BoLT normallY pRojEctiNG From tHe loCK hOusing anD means INcLuDing a moVeAble meMbEr iN thE lock HOusiNg connEcted to a Door kNOb or lever handlE For moving the lATcH BOlT To a rEtrActed positiOn in THe hoUsinG, HaS a lOCking MechaNiSM cOMprising a blocking elEmEnt in tHe houSing and means fOr moving thE BLOcking elEmenT BeTWeen a locked posItion And an unlocKEd positiOn relAtive the Moveable mEMBer. The blOckIng EleMenT HAs An opening adapTED to rEcEive a poRtiOn of the MovEabLe mEmbEr When the blOcking elEmEnT iS iN thE lockED positioN fOr aLlOwiNg the MOveablE membEr to MoVe ANd tHe door kNOb OR LeveR hAnDle tO roTaTe. A stOp is REmoVably poSitioned iN thE OpenInG oF the bloCking element fOr Preventing MoVemEnt of tHE Moveable Member when the blocking elEMent is iN thE lockEd poSition.
AlsO in Accord WitH The preSent inVentiOn, A moRTIse loCK CoMprIsEs a housing AND a lAtch bOlT remOvably mOunted in the housing THroUgh an opening iN thE houSINg. a seCUrINg mEmBEr iS DIsposed inside thE housing foR mOVeMent relatiVE to ThE housinG. The secUring MEmber coMprises a sEcuring elEmEnt hAVIng A blocking sUrface anD means for BIasinG ThE blocKinG surfaCe IntO engaGement WIth The laTch bolT fOr releAsablY sEcuring tHe latch bolt to the securinG membeR. The sEcuRing elemeNt fURthEr comprisEs a sUrface whicH whEn pResseD moVEs the SecuRInG elEMent aGainST the force OF tHe bIASiNg means for rELEAsiNg the LatCH bolt fRom tHe securing member sO That the latch boLt maY BE reMovED froM tHe housing. The seCurInG MEmber is mOvEable betweeN a first pOsITion wHere thE latch Bolt is iNSIdE The houSing And A second poSitIoN Where a pOrTiON of the LatcH bOlt proJects tHRougH THe opening in the hoUsing. mEAns foR MovIng thE sEcuring MEmbeR to the firsT position arE proviDed, iNcludIng a movEaBle memBer In The housing. a Blocking eLemenT is dispOsEd in The HousinG and MEAns
 the lock housing in an ex tended pos ition  of  th elatc h bo lt while a sec o nd p ortion of the latch bo lt re ma i ns w i th in th e lockh ou s i ng.  T he  la tc h  b olt i s r emovabl e from the  lo ck  housing thr o ug h the open ing . A securing  me mber i ns ide the h ous ing i s rele a sablyattachedto the se c ond por t i on  ofthe latch bolt.
T h es ecuring member  compr is e sa sec uri ng element  h aving a block i ng s u rfa c e and means f or biasingt hesecuri ng  el e ment a nd bl oc k ing  surface in to e ngagement  witht he seco n d porti on ofthe  la tchb ol tfor  r e lea s ab lys ecu ring the  l at ch bo lt t o t h e mo vin g me mber.  The securing  el emen t  fu rther  comp rise sa dis engagi ng su rf ace which whenmove d against  th efor ce  of t h e bias ing  me ans rel eases t h e s ec o n d  p ortion of the latc hb o lt  from th e secu r in gm ember so  t hat  the l atchbolt ma y be rem oved f r om  t he lock  h ousing .Infur thera ccor d with  the pre senti nvention, a mo r tise lock oft he t yp e  hav ing  a latch bo lt n o rmal ly p r oj ect i ng fr om th el oc k  housing and meansin cludin g a m oveable membe r in the l o c k  housing  con n ec t ed to a door k nob o r lever ha n dle formovin g the la tch boltt o  a retra cte d p osi tio n in  the housing, h as a  l ockingmec hanismcom pri sin g a  b locking e lement i nth eho usi ng an d  means f or  mo vi ngthe b l ocking  elem entbe tw e ena locke d  p o s itio nan d an  un lo ckedposi t ion  relati ve the mo vea b le m em be r. Theblocking elem en t has an o pe nin g adap t e d to rec eive a portion of the m o veablemem ber w henthe block ing  eleme nti s in t he loc ked p os iti o n  fora l lo win gthe moveab l e  me mberto  mov e and t he door knob or le v erhandle to rot ate . As t op  is re m ova bl y  po s i tioned in the o pening ofth e  b locking el e men tfor pre venting  move m ent ofthe movea ble membe rwhen t heblocking e lement i s in thel ocked po sitio n.Also i nacc ord w ith th e  pr esent  inven ti on, amorti se  lock co mprises a housing and a  latch  bolt  re movably m oun t edin the ho usin g throughanope ningint he ho usin g .A s e curin g me m ber is di s po sed i ns ide the hou s i n g f or mo vem e nt rel ativ e to the housing. The securing m embe r com pri s es a  s ecuring elemen t h av i n g a bloc ki ng surfaceand mean sf or bi asingthe bl ockings u rf a ce int o en gag ement wit h t he latch b ol tf or rel easa bl y secu ring t h e la t c h bolt to the se curin g membe r . T he se cu ring el e ment  further c omprises asurfac e wh ich w hen pre ss ed mov esth e securing element a gains t the f or ce o f t he bia sing m eansforre lea sing thel a tc h  b ol t  fr om t he se cu ring  member s o  that th e l a tch bol tmay b e remo v ed f rom the ho usi ng. T h e  securingm embe r  i s  move able b etween  a firs t  po si tion wh ere t he latchbolt is i n sid ethehousingan d ase con dposition wherea portio n of the l atch b olt proj e cts th ro ugh the open ing i nt he hous i n g.Means f o r m ovi ngthesec urin g  member to the first pos itio n are pro vided , inc lu ding a m o veab le membe r  in the housi ng. A blockinge lem e nt i s d i sp os ed in the  ho u singandmea ns
 the_lock housing_in an extended position_of the_latch_bolt while_a_second portion of_the latch bolt_remains within the lock_housing. The latch_bolt_is removable from the lock housing through the opening. A securing member inside the_housing_is releasably_attached_to_the second portion of the_latch bolt.
The securing member comprises_a securing_element having a blocking surface and means for_biasing_the securing element_and blocking surface into engagement with the second portion_of the latch bolt for releasably_securing the latch_bolt_to_the moving member. The_securing element further comprises a disengaging_surface which when moved against the_force of the biasing means releases the_second portion of the latch bolt_from the securing member so_that the_latch bolt may be removed_from the lock_housing.
In further_accord with the_present invention, a mortise lock of_the type having_a latch bolt normally projecting from_the_lock housing and_means_including_a moveable_member in the_lock_housing connected_to_a door knob or lever handle_for_moving the latch bolt to a retracted_position in the housing,_has_a locking mechanism comprising_a blocking element in the_housing and means for moving the_blocking element_between a_locked position and an unlocked position relative the moveable member. The_blocking element has an opening adapted_to receive a portion_of the_moveable_member when the_blocking_element is_in the locked position for allowing the_moveable member_to move and the door knob_or lever handle to_rotate._A stop is removably positioned in_the opening of the blocking element_for preventing movement of the_moveable_member_when the blocking element is_in the locked position.
Also in accord_with the present_invention, a mortise lock comprises a housing_and_a latch bolt removably mounted in_the_housing through an opening in the_housing._A_securing member is disposed inside_the housing for movement relative to_the housing. The securing member comprises a securing element_having a blocking_surface and means for biasing_the_blocking_surface into engagement with the latch bolt for releasably securing_the latch_bolt to the_securing member. The securing element further comprises a surface which_when pressed moves the securing element against_the force of the biasing means for releasing the latch bolt_from the securing member so that the latch_bolt may be removed from the housing._The securing member is_moveable_between a first position where the latch_bolt_is_inside_the housing and_a second position_where a portion_of the_latch bolt projects_through the_opening in the_housing._Means for moving the securing member to the first position are provided, including a moveable member in the_housing. A blocking element is disposed_in the housing and means