CA2052388A1 - Stays - Google Patents

Abstract

ABSTRACT
STAYS

A stay for, for example, a window has a channel section for connection to the fame and an arm for connection to the opening window leaf. A linkage extends between the arm and the channel and includes a slider on which is mounted at least one of the links and which slides along the channel during opening and closing movement of the arm.

In one embodiment, the slider carries on elongate member which is biased into a position in which the member engages a stop on the channel to restrict the opening movement of the arm. A member can be depressed to disengage it from the slot and allow full opening movement of the window.

In a second embodiment a device is provided between the slider and the base channel for selective operation to limit the opening movement of the leaf. This device may be an elongate removable intermediate stop that prevents the arm opening to the maximum extent and limits the opening to a point at which, for example, ventilation is provided but access through the window is not possible.
As a second possibility a screw may be provided on an elongate restrictor bar attached to the slider so that when the screw is in an operative position it contacts the stop before the leaf is fully open. A third possibility is to provide a screw on the slider which, when moved to an operative position, engages the slider.

Description

Ths inv~ntion rel~e~ to stays ~or connecting a ~lo~ure to an a~sociated ~rame to allow opening and closing movement of th~ closure out o~ and into the frame. Examples o~
such clo~ure# are window~ and doors.

One commonly used ~tay eompris~s a channel ~or connection to on~ o~ the part~, an arm ~or connection to the other part and a linkage ~onnecti~g th~ ch~nnel t~ the arm to allow the opening and clo~ng movement. At least one l inh o~ the linkage i~ pivotally co~n~cted at one end to a sli~e~ which slides in ~he channel ~o guide the movem~nt.

In general, the ~eomet~y o~ th~ linkage is such that sub tantial ~pening movemen~ is poRsible, for example to allow the exterio~ of a window ~o be cleaned ~ro~ the interior by mov~m~nt of th~ inner vertical edge o~ the closure lat~rally relat~vs to the fr~e. It i6 not, however, always ~esi~able to allow such full openinq movem~nt wi~hout restriction, ~in~e it mig~t be d~ngetous if a child were able to open a clos~re to it~ ullest possible extent.

Acco~dinq to the inv~ntion, th~re is provi~ed a 6tay ~or connecting a elosu~e to an as~o~iate~ ~ram~ comprisins a - , . , ". ~
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~hannel ~or connection to one o~ the p~rts, an asm or ~onnection to the other o~ ~he pa~ts and a linkage connectin~ ~he channel to the a~m to allow opening and clo~n~ mo~em~nt of ths clo~ure out o~ and into the frame, the linkage includin~ a~ 123st o~e link pivotally connected to a sl~der r~ceiv~d for ~1iding movement in the channel, an elon~ate stop member e~tending alon~ the chann~l between the slider ~nd a ~op on the channel to limit tho opening move~ent of the sli~er, the elongate ~top m~m~e~ ~einq manually di~enyageable for allowing a~di~io~al opening moveme~t of th~ slider.

~he following is a more detailed de~cription o~ five embodiments of ~he invYntion, b~ way of ~xa~ple, reference being mad~ to th~ accompanying drawin~s in which:-Figure 1 iS a side elevation o~ a fir~t frietion s~ay withan arm o~ the ~riction 6tay in an open po~ition a~d showing a ~lid~r and a second st.op member, Figure ~ shows a side elevation a plan vie~ and an end elevation o~ the second stop m~mber o~ the ~ir~t frietion stay of Figure 1, Figure 3 is a ~ide elevation o~ a second friction stay with an ~rm of the friction Stay in an open po8ition showing a slider and a re~trictor bar carr~ed by the slider, . :. . , . ~ : . :

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~ ~t~ ;3 Figure 4 is a side ~leYation, a plan view and a s~ction o~
the restrictor bar o~ the s~cond friction stay o~ ~iqure 3, ~igure 5 i~ a side ~lsvation o~ ~ third ~ric~ion stay with an arm o~ a friction s~ay in an op~n position and showing a slot and a screw which act to limit the opening rnovement of the stay, Figure 6 is a ~ide ~levation of the third é~iction ~tay of Fiqu~e 4 showing 'che screw in the slot Figur~ 7 is a s~ction on the line VII VII o~ Figur~ 6, Figuræ 8 is a plan v~e~ of a fourth window s~ay including an arm shown in a partly open posation and a ~top member engaged with a channel of the ~tay, ~ig~ ~e 9 is a similar visw 'co Figure 8 but showing ths arm in a ~econd partly open position with the stop membe~
erlgaged with the Ghannel in a ~econd position.
Figure 10 is ~ similar view to Fig~lres B and 9 ~ut showing the a rm i n a f u 1 ly open po~ i t i on, Figure 11 i5 a plan view o a i~h forrn of window st~y simi lar to the stay shown in Figures 8 to 10 but with a 5eC:Qnd eOrm of 8~0p mem~er sttached to a slider o~ the stay and engag~d with a stop on the channel to hold the arm in a partially open position, Figure 12 i8 a similar view to Figure 11 but with the arm in a fully op~n position, Fi~ure 13A is a pl~n vi~ o a puSh ~utton o~ the stay of Figur~s 11 and 12, . :

Figure 13~ is ~ seCtion on the line X-X of Figure 13P, Figut~e 13C is a ~æction on the line ~-~ o Figur~ 13A but showing the pu6h button in the ch~nnel of th~ stay o~
~igu~ ll and l~, Fi~ure 14A is an elevatlon o~ a stop bar o~ the st~y of Fiqures ll ~nd 12, Fig~lre 148 i5 a cro~s-sec~ion o~ the stop bar of Fi~ure 14A, Figu~ 14C i~ a ~riew on the a~ro~4 A of Figure 19A, Figure 15~ i8 a plan view of an end part o~ the slide~ o~
tho s~ay of Figure~ 11 an~ 12, F~gur~ 15~ is a si~e elevation of the end of the slider sho~n in Fig~lre 15A, Figu~e 16 is ~ cross~sectional view of the ~paCer o the ~t~y of Figures ll and l~, ~igu~e 17 i~ a sch~matic vie~ o~ an end o~ the chann~l of the st~y o~ Figur~ ll and 12 showing the spacer of Figure 16 lo~ated in the channel, and Figurq 18 i8 a s~r~p view o~ ~ ~hann~l of the stay o~
Fi~ures 11 and 12 ~howing an ~ar prt:~sed ou~ o~ a ~lange o~ the channel.

Re~r~ing f irst to Figure l, the ~ rst f riction ~tay conlp~lses an elongate base member lO ~ channel section with parallel guid~s ll e~tendinq ~long ~e5pective ~ide edges. A linkage, indicated g~nerally at 12, is carried ~: " '. ' . :"

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by th~ ba6~ chanalel 10 and inel~ s an arrn 13, a longe~
link 14 l 3nd ~n intermediate link 15 ~nd two short~r links 16, 17 .

As se~n in Figur~ 1, the longer link 14 has one end ~onnected to the b~se ch~nnel lo by ~ ~ixed pivot 18 located adj acent one end of th~ base member 10 . The other end o~ the longer link 14 is ~orlnect~d to the arm 13 4y a pivot lg located izlterm~diate the end~ of the arm 13.

~he intermediat~ lin~s 15 and one sho~r link 16 both have one end connected to a slide~ 2û ~or pivotal mov~ment about resp~tiv0 spaced parallel pivot a~ce~ 21,22. Th~
other end o the int~rm~di~te link 15 is cant ected inte~mediaS~ the Eands o~ the longer lin~ 14 for pivotal mo~ement and the oth~ar end of the irst shorter link 16 is connected adjacent an ~nd o~ th~ a~rn 13, al~o for pivotal movsment. The econd shorteg link 17 extends between the inte~mediate link 1~ and the ~rm 13 and i~ parallel to the longer link 14. Th~ intermedi~te link 15 is parallel to ~h~ arm 13.

The slider 20 comp~is~s a blook of gene~ally recS~ngular cro~s-~ection who~e 3ide~ lo~ate in, and ~re guided ~y, the gui~e~ 11 o~ the ~ase channel 10. Thus ~he slider 20 is constrained for rectilinear reciproc~ifl~ sliding , . . ' .

movem~nt along the base channsl 10.

T~e bas~ chann~l 10 also inclu~es a s~op 23 which project~
into the path of the ~ er 20. Tha po~ition o~ this stop 23 will ~e considered below.

A second stop member 24 (se~ Figure ~) is in the form o~
a~ ~lon~at~ bar o~ rectangula~ cross-section having a h~le 25 at one end and ~ notch 26 adjacen~ the hole. In use, as seen in Figure 1, the bar is fixed by a quick release scr~w to the base member 10 and the notch 2~ covers the ~op 23.

In use of the f ric~iorl stay, ~h~ opening window s~h (not shown) i~ mounted in a ~ixed window ~ra~e ~not shown) b~
two f riction stays of the kind d~crib@d above 5~1i th reference to ~igures 1 and 2. The bas~ channel 10 o~ each stay is mounted on ~ ~æspective opposite mernber of the f ixed ~rame ~nd si~e member~ o~ the s~6h are connected to the arm~ 13. The linka~e 12 allows t~e window sash to be moved between a~ open position, in which the li~kage is positioned as shown in ~igure ~ and a closed position. In th~ closed position, the ~rm 13 and the links 1~,15,16 and 17 are ~11 in ~egiste~ with the base channel 10. A
pointed end 27 of the arm 13 p~oi~cts into a groove 28 provided by an end cap 29 mounted at one end of the base %~3~5.~3~

ch anne 1 10 .

In the closed position, the slider 20 i6 located adjacent the end ~ap 29~ As the arm 13 moves to the open po3ition, the sli~er 20 slide~ alon~ the base channel 10, co~stra~ned by the guid~s 11, until it contacts the end o the ~top mem~r 24. Thi~ provides ~ stop which prevents further open~n~ movement o~ the arm 13. A!i will 1~e seen in Figure 1, the position of thi~ stop i~ ~uch th~t ~nly limited opening movement is possi~le - suicient ~o proYide ~erltilation but insufl~icient to all~w a person acce~s through 'che window.

I~ wid~r openin~ movem~nt i5 ~e~u~red, ~ithet in ~merger~cy or or ~le~nin~ and ~eco~ating purpoce6, the ~e~ew is removed rom the hole 25 in ~he stop m~mber 24 an~ the stop member 24 detach~d f rom the ~a~ chann~l 10. The slider 20 is th~s no long~r limited in its opening movement by the ~top member 24 ~nd can contin~le to slide ~s the ~rm 13 i~ opened unti 1 th~ sliaer 20 cont3cts the ~top 23. 12~ this position, the window is open to an extent that allows ~cass to the exterior ~ur~a~e ~or cleaning and decorating and also to an extent 'chat allows egr~ss thtough th~ windo~.

It will be appr~cia~ed that the s~op member need not be in ,, . ~ .

the form of a bar. It ~ould b~ in th~ form of a blook o~
any other member which li~nits th~ movernent of the slider 20 but which is removabl~ f~om engagem~nt with tha hase m~3mbe r .

~ef~rring now eo Figure 3, the ~acond ~riction stay con~prise~ an elongate ba~e m~mber 30 of channel section with parallel guides 31 ex~ending along respec~iv~ ~d~
~dges. ~ lin~cage, indicate~ generally at 32, is ~arri~d by ~h~ base member 30 and includ~s an arm 33, a longer link ~, an interm~diate link 35 ~nd thre~ shott~r links 36,37,3~. As ~een in Figu~ 1, th~ longer link 34 has ~ne and connecte.d to th~ ba~e channel 30 by ~ ~xed pivot 3~ loca~ed adjac~nt one end of ~he ba~e m~mbRr 30. The otlter end of the longer link 34 is conn~cted to the arm 33 ~y a pivot 40 located inte~mediate the end~ o~ the arm 33 .

The interm~diate link 35 and one æhorter link 36 both have one end connec~ed to a slider 41 for pivotal mov~m~nt about re~pective ~paced pa~allel axes 4~,4~. The other ~nd of the interm~diat~ link 3$ is conn~cted intermsdiate the ends of the longer link 34 ~or pivotal movement and the othe~ end of the ~irst shortar link 36 is connected adjacent an en~ of the arm 33, also ~or pivotal movemant . The second an~ third short~r links 37, 38 1 , '' '; ' . ~. '~ ' ~: . . .;
,. - :: ~ - : .
: .. . : . ~, ...... : . , l ' i.;' . , extend between t~e intermediate link 3S and the arm ~3 an~
are parallel to ona anothe~ and ger~erally parall~l to th~
longer link 34. ~rhe int~rmç~diate link 35 ie; par~llel to the arm 33.

The ~lider 41 comprise~ a ~lock of generally re~tangular cross-~ection wh~se sides ~ocate in, and are guided by, the guides 31 o~ the ba~e member 30. rhus the ~lider 41 is con tr~ined ~or rectillnear reciprocating slidin~
mov~m@nt ~long the base chann~l 30.

~he base channel 30 also incl~ldes a stop 44 ~hich projects into ~he path o~ the slider. The function o this sto~ 44 wi 11 be consi~ered b~low.

An elon~ate restrictor ~ar 45 i~ connect~d at one en~ to the slider 41 for movement with the sli~er ~1 and is guid~d in su~h movement by th~ guides 1~. For this purpo~e, as be~t ~een in Figure 4, the re~trictor bar ~5 has a channel shaped cro8~ seetion with p~rallal shoulders 4~ that engage the guide~ 31. A grub or slot serew 47 iS
carried by the re~rictor bar 45 at an end opposi~e its connect~on to ~he ~lider 41. The purpo~ of this screw 47 wi 1 l ~e de~cribed below, In use of the ~riction stay, an openin~ window sash (not ., . , , : . .
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. " . :, shown) i~ mounted in a fixed window rame ~not shDwn) b~
two ~rie~ion st~y~ of ~he kind ~e~cribe~ above with referen~ to Figure$ 3 and 4. The ba~e channel 30 of each stay is mounted on a re~pective opposit:e membeE of the ~ixe~ f rame and side members of the sash are connected to the arms 33. The linkage 32 allows the window l~af to ~e moved to an op~n positior~ in which th0 link~qe is posi~ion~d as shown in Figur~ 3 anCI to a clo~ed position.
~n khe closed position, the arm 33 ~nd the links 34,3S,36,37 and 38 are all in re~ist~r with t2~ ~ase member 30. A pointed ~nd 4~ of the arm 33 project~ in~o a groove 4~ provlded by an end cap 50 mounted at on~ end Of th~ base channel 30.

In the closed position, ~he slid~r 41 i8 1ocat~3a ladiacll3nt the end cap 50. As ~he arm 33 mo~e~ to the op6!n posi~ion, ~he slider ~l slides along the bas~ c:hannel 30, constrained ~y the guide~ 11, until it con~act~ the stop member 45. Thi~ provides a stop which pre1~nt8 ~urther ope2ling movernont of the arm 33. This stop ~efin~s the maxlmum opening movement of the arm 33. I~, however, only limit~d opening movoment is required, the grub or slot ~cr~w ~7 on the ~eætrictor ~ar 45 is moved downw~rdly ~rom th~ retracted position shown in Figure 4 to an extended position. When th~ grub or slo~ screw ~7 i~ so po~itioned, it will engage the s~op 44 well before the ~ . .
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2~ 3 slider 41 ~nqage~ the stop 44 and so will t~strict s~verely the available degree of opening movement, The lengtl of th~ re~tricter bar 45 and the position of t~e grub or ~lot screw 47 can be chosen so that the limitsd opening mov~ment of the arm 33 is su~h a3 to a}low adequate ventilation while providing too small a gap for a person to pass through the window, ~o increasing se~curity. ~f wid~r op~ning is required, ~ith~s for more ventilation or an emer~ency~ th~ g~ub or slot scr~w 47 can be ~uickly and easily r~tracted to allow full opening mov~m~nt.

It will, o~ course, b~ apprsciJted that the ~ngaq~m~nt between the restrictor bar 45 and the ~top 44 need not ~e by way of a qrub or ~lot screw. It could be by asy oth~r form of releasable detent.

Ref~rring next to Fi~u~e 5, the third friction ~tay comprises an elon~atR ba~e member 60 o~ channel sRc:tion with parallel guides 61 extending along respe~tive side edges. A linkage, indicat~d q~n~rally at ~2, is ca~ried by the base channel 60 and include~ an arm 63, a longer link 64, an intermediat~ link 6S ~nd a shorter link 66.

As seen in ~igure S, ~he longer link 64 ha~ ona end eonnecte~ to a base member 60 by a fix~d p~Yot 67 located , ~' ' '' "" ~
'' . ' '':

~r~ L;~ r;~

~djac~nt one end of the b~se chann~l ~0. Th~ othsr end of the lon~er link 64 is connect~d to th~ arm 63 by a pivot 68 loca~s~ int~rmediate the ~nds of th~ arm 63.

The interm~diate link S5 and the ~horter link 66 both have one end connectad to a sli~2r 69 for pivotal movement above respectiv~ spaced parall~l piYot axes 70,71. The other end o~ the intermediat~ link 65 i~ ~onn~cted in~erme~i~te the ends o~ the lon~r link 64 ~or pivot81 movemen~ and the other end o~ the shortar link 66 is connect~d adjacQnt an en~ o~ the arm 63, al~o for pivotal ~ovement, The intermediate link 65 is parallel to tht~ arm 63.

The slider ~ comprises a ~lock o~ gsn~r~lly rectangul~r cro~s-section whose si~e~ locat~ in, and ar~ guided ~y, the guides hl o~ th~ ba~ channel 60. Thus the ~lider 69 i~ ~on~trained ~or rectilinear reciprocating ~liding movement along the ~s@ chann~l 60.

The ba~e channel 60 also include6 a ~op 72 whi~h projects into th~ path o~ the ~lider 69. A3 s~en in Fi~ure S, this limits th~ maximum op~ning movement o~ the a~m 63. The bas~ channel 60 is provided with an aperture 7~ between the stop 72 and an adjac~nt end of the ba~ channel 60 in the path of the ~lider 69.

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, 13 q~ ~ h ~ 1~ ~

The slider 63 carrie~ a 6crew ~4 which is best ~n in Figure 7. The S~rew 74 h~s an enlar~ed head 75 whiCh, by ro~ation of the ~Cr~w 74, can be moved betw~n the extended po~itio~ shown in Figure t and ~ retr~cted position in which the head 75 i~ spaced upwardly ~rom the position sho~n in Figure 7.

The purpose o~ the scr~w is to provide limited op~ning of the ~rm 13. As seen in Fi~ure 6, i~ the head 75 o~ the screw 7~ is ~oved to the Ext~nded posi~ion when th~ ~crew 74 is in reqi~ter with th~ ap~tture 73, opening and closing movement o ~he arm iS prevent~d by enqaq~ment of the head 75 in the apertUre 73. Mov~ment o the head 75 to the retracted po~ition, howe~er, allow~ the slider ~9 a full ranqe o~ movemant limited only by ~h~ ~top 7~.

In use o~ ths ~riCtion st~y, th~ openinq window sa~h (not shown~ is mounted in a ~ix~d window ~rame ~no~ ~hown) by two friction stays of the kind describ~d above with referenc~ to Figure~ 5, 6 and 7. The base chann~l 6Q of each stay i~ mounted on a resp~Ctive opposit~ membe.r o~
the ~ixed ~rame and side members o the ~ash are connect~d to the a~m ~3. Th~ linkage 62 allows the window sash to be mov~d to an open po~ition, in which ~h~ lin~a~e is positioned a8 shown in Figure 5, and a closed position.

In the closed poSition, thB ar~ 63 and th~ links 64,~5 ~nd - .

`;3 6~ are ~11 in regi~ter with th2 ba~e chan~el 60. R
point~d ~nd 76 o~ the arm 63 projscts into a qroove 77 provided by an ~nd cap 78 mounted at one end of ~he base channel S0.

In the closed po~ition, the slid~r 6g is located adjac~nt ths end cap 78. As the arm 63 mov~s to the open position, the slider 69 slides alonq th~ base channel 60, constrained by th~ guides 61, until it contact~ the ~top 72. Thi~ provides a 8top which prev~nt~ furth~ openan~
mov~m~nt of the arm 53 and, a~ d~sc~ibed above, ~he position of this stop 72 is such that it provides maxi~um opening of the window.

Wh~n the æcr~w 74 is aligned wi~h th~ ~perture 73 the arm 63 i5 in only a partially open po~ition, which may be ~
po~ition which allow~ ad0quate ven~ilation but pre~nts in~ress or e~r~s~ through th~ window. When in this position, the screw 74 can b~ moved to th~ extended position in which it engages in the apertur~ ~3 to pr~v~nt either op6ning or clo~ing moYement of th~ window lea~.

I~ will be appr~ciated, o course, ~hat this lockin~ Of the arm 63 in a limited opening position need not be achiçved by ~nqagement of a ~Crew head 75 with an apertur2 73, It coul~ be achieved by any other latching ~e~ns, for .

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exam~le a rotatable or slidable detent may b~ provided on the slider which enga~es with the guides at ~oma other part o~ the ba~e.

The length of the apertu~e could be increa~ed tO extend the aperture toward~ the end c~p ~o that the arm may b~
msv~d bstween the clo~ed and the limit~d ope~inq positions with the xcrew head 75 in the ext~nded po~ition.

Two ~u~ther ~rms of stsy will now ~e d~s~rib~d with referen~e to Figures 8 to 1~. Th~ basic ~onst~uCtion o thæ two stay~ is ~he ~am~ in both ~ res 8 to 10 ~th~
ourth ~tay) and in Figure~ nd 12 tthe fi~th stay3.
This construction will now b~ cribed.

The ~tay compri6es a channel 110, an arm 111, a longer link 112, a shorter link 113 and an intermediate link 114. The channel i~ o~ metal and has a b~e 115 and parall~l upstanding ~ide walls 11~. Flan0e~ 117 projec~
inwardly ~rom the edge~ o~ ~he side wall~ 116 to define a s~Ot 11~.

Th~ channel 110 Contain~ a slider 11~ whos~ od~e~ extend into the two opposed qroo~e~ de~inQd b~tween the base 115, the side walls 116 and the ~lange 117, to Confitrain the slider 119 to slidinq mo~emen~ back and forth alonq the . ~ . , . ~
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1~

channel 110. The o~lter ~ace of the slider 120 projects through the slot lla and the shorter link 113 and the in~rmediate link 11~ are connect~d to the sli~er at spaced points therealong ~or piYotal mov~ment about parallel axes ~orm~l to the base 115. The shortet link 113 is pivotally connected at its oth~r end to one ~nd of the arm 111.

The longer lin~ 112 is connected to the ~ hannel 110 fot pivotal mo~rsment about an axis normal to the ~a~e 115 which is ixed rel~tive to th~ channel 110. The other end o~ the longer link 112 is pivotally connected to the arm 111 at a point between th~ ~nds o~ the a~m. ~he end of ~h~ int~rmediate link 114 remote rom the slide~ llg is pivotally connected to ths lon~er link 112 inte~mediate its en~s.

This conf iguration allo~ the arm 11~ to be rnov~d with pivotal and translational mov~m~nt relative to the channel, a~ shown in Figures 13 to 11, During ~his movemen~, the ~rm 11 is ~uid~d by the lin~s 11~113,114, and the slider 11~ mo~e~ ~rom a position a~jac:ellt one end o~ the channel ~10 to a poSition adjacent the oSher end of the channel 110 wher~ the longer link 112 i~ connscted to the channel 110.

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!;t L~ 3 3 In use, the channel is connecte~ to~ or ex~mplel 3 window f rame and th~ arm lll i~ conn~ted to an associa~e~ ~indow lea. The s~ay controls ~h~ opening and ~lo~ing of the window le~f into and out o~ the f ram~ .

The stay shown in th~ drawlng~ only one o a large number of stay arra!~gem~nts whic~ featur~ a channel and an arm connect~d by one or more links. I~ will b appr~iated that the invention c~n ~e appli6~d to any ~uch arrangement and i not limited to ~ha~ shown i~ the drawinqs. In addition, such stay~ can be used with other elosures su~h as doors.

Referring now to Figur~s ~ to lO, in the ourth stay, t}~e slider includ~3 a ~enerally rectarl~ular elorlgate plat~ 120 which lie~ in a plane qenerally parallel ~co the plane of the bas~ 115 and is received in the chanrl~31, projec:ting along the channel in the di~ection o opening movement of th~ slider 119~ The plate i~ made of a ~lexible m~te~ial, such a~ spring ~t~el, and is bQwed upwardly ~o that its free ~nd engages th~ under eurfa~es of the flan~es 117.
The end of the plate 121 is provided with two upward proj e~t ion~ 121.

The ~langes 117 are form~d with two cut-outs 122,1~3.

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In u~e, star~ing with the arm 111 in a po~ition in whichit overlie~ ~he channel 110, opening movement of ~Lhe arm 11 causes the slid~r 119 to ~lide along th~ channel 110.
~he projsction~ 121 on the pla~e 120 are urqed in~o engagement wi~h the inner ~urfaces of the f lsn~e~ 117 and ~lide alonq the ~lan~e~ 117. When ~he projeC~ion~ 121 reach the f irst cut outs 122, the pro jection~ ex~en~ in~o the ~ut ou~s 122 an~ pre~ent further opening mov~ment of the arm 111. Thi~ is the position shown in Figure 8. In this position, furth~r openin~ movement of th~ arm ll'L is not pos3ibl~. -If, howe~/er, the end of the plate 120 is deprRssed, for example with a ~inger, th~ proje~ctiort~ 121 are digengagad from the fir~t cut-outs 122 and opening movement of the arm can eontinue. Hos~ever, when the proj0C~ion~ 121 reach th~ second cu~-ou~s 123, the proj~ctions onCe again ~ngage in the cut-out~ 123 pr~v~ntir~g Eurther openin~ movem~nt of ;;
the arm~ This is tha position ~hown in Fi~ur~ 9.

Again, however, ~he proj~ctions 1~1 ean ~e press~d out Of the cu~-outs 123 to allow opening movement o~ th~ arm 111 to continue until the plate 120 ~ngages the end of the channel 110. Thi~ is the ~ully open po~ition o the arm ,. ,~ - . , , -,,.

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,, ~ ,- ,, , :
, , -illustrated in Figure 10.

Closin~ movement o~ the arm 111 ca~s~s th~ pro3ection~ to ratchet back over the cut-outs 122,123, 80 not interfering with this closing ~ovement, RefeEring next to Figures 11 to 18, as men~i~n~d above, the fi~th stay ~hown in these Fi~ur~s is identical to that shown in Figure~ 8 to 10 (except that ~t is of the other hand~. Its construCtion will not therefore b~ deseribed in dctai 1, In thi6 embodiment, the slider 110 is ~orme~ with ~wo e}on~ate 3top bars 175 b~st S~eQ in Figure~ 14A, 14~ and l~C. Each stop bar 1~5 is elong~te with flat upp~r and low~r surf~ces 126,127 (see Figur~ ~4B~ and a V-eh~ped groove 128 formed along on~ edge. Adj~cent one end, each stop bar 125 is ormed with an aperture 129 and ajaoent the other end one wall of the V-~hsped groove 128 is de~ormed to provid~ a projection 13~ whi~h ~fectively closes the qroov~ 128.

Th~ end o~ the slider ~s modi~ied a~ ~hown in Figures 15A
and 15~ to provide two lugs 131 proj~cting ~rom oppo~ite sides o~ an ~nd of the slider 119. Each lug 131 fits into an apertur~ 129 on a respectave one of the stop bars 125 so that th~ stop bars 1~5 are connected to the slider 119.

~ .:

Thus, each stop ba~ ext~3nds along a resp~ctive g~oove formed betw~n the 4ase 115, a sid~ wal~ 116 and an associated ~lange 117. ~he thic~ness af ~ach ~top bar 125 ( i . e . th~ distance betw~en the upper 3nd lower surf aces 126,127) is le~s than ~che width o ~he as~ociated qroove.

In this po~ition, th~ two V 8haped grooves 128 ~acc ea~h other across the channel 110.

The stop bars 125 carry a pl~sh but~on 1~2 ~hat is best ~een in Fiqures 13A, 13~ and 13C. The push ~utton 132 comp~ises a pla~tics body of q~n6~rally ~ectangular shape in plan proviàed with par~llel tt-~ec~ion qui~es 134 ext2nding along ~e8pective edges of the body 133. P,n up~er sur~ace o~ the body 133 is provided with rih~ 135.

As b~st ~een in Figure 13C, ~he guid~s 134 p~oject into ~:h~ V-shaped grooves 138 in stop bars 125, ~o ~hat the pu3h ~utton 132 is carried for 811ding movement along the stop bars 125 - united by ~he projections 130. A~ ~een in Figure 13C, the unde~-our~ac~ o~ the push ~utton 132 is hollow and receives a U-shaped leaf spring 136 wllose ends engage th~ button 132 an~ whose bas~ 61ngage~ the ~ase 115 of the channel 110 under ben~ing tension to ~orce the push button 132, and thus the stop bars 12S, out o~ the channel llO so that the body 133 o~ th~ pu~h button 132 is located . . . .
,, . , ...................... ~ :

- ..

in th~ ælot 118 between the channel f lan~es 117 as~d ~o tha~ the stop bar~ l25 engage the ~langes 117.

The f langes ll~ of the channel llO are ~orm~d ~t a point i~termediate their ends to ~orm a p~it of downwardly proj~cting ears 137, as bast seen in Figure 18.

The end o~ the langer linls 112 is mountsd on ~h~ channel llO via a ~pacer 13R shown i n Figure l6 . The sp~cer 138 i~ a r~c~anguls~ block having the same wi~tn as the slot 118 p~ovided with a central hole 13~ to rec~ive a pivot or th~ long~ link 112. The sides o~ the ~paCer l38 ~re provided with r~sp~ctive rib lqO.

rhe spac~r 138 i~ mount~d towards ~che end of ~he chann~l llO as shown in Figl~r* 17. The ri~s 140 projeCt into the channel grooves for a purpose to be d~scribed below.

In use, th~ stay is mounted in a closure as described above with reerence to the dr~wings~ Wh~n the arm i~ in the fully clos~d position, it overli~ the channel llO.
As the arm 111 moves to an open position, the associated stop ba~s 125 move along the side~ of the chann~l llO
beneatn the f langes 117 . This opening n~ovemen~ continUes until the ends o~ the Stop bars 125 engage the e~ l37.
At this point, no urther opening movement o the arm lll . .

.. .
, i3 pos~it~l~. This i~ the po~ition shown in FigurOE 11.

If the pu~h button 132 is d~pressed again~t the ~orce of the sprin~ 13~, the ends o~ the stop har~ 125 mov~ out of e~gagement with the ear~ 137 towar~s the basa llS of the channel~ 110, so allowing the ~top bar~ 125 to pass ~eneath the ears 137. ~n this way, oponing movem~nt of the arm 111 can be continued until the arm 111 rea~he~ the fully open position. ~hi~ position i~ shown i~ Fi~ur~ 12.

Toward~ the end o the op~ning movement, ~he Y-~haped g~ooves 128 in the stop ~ar~ 125 enga~e t~e rib~ 14n on the spaCer 12~ so allowin~ th~ ~top ~ars 125 to pas6 ~he ~pacer 128.

A~ wi~h ~he em~odiment of Figures 8 to lG, there m~y 4 two or more sets of ears to define a number o~ dif~erent re~tri~ted openinq positions. :~

It Will be appreciated, of course, that th~ push ~ut~on 132 need not be form~d separately from ~he s~op bars 125.
I~ could b~ formed i~tegrallr with the ~top bars. ;.
Further, the stop ~ars 125 could t~e ormed inte~rally wi~h the remainder of the slider 119.

;

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Claims (15)

1. A stay for connecting a closure to an associated frame comprising a channel for connection to one of the parts, an arm for connection to the other of the parts and a linkage connecting the channel to the arm to allow opening and closing movement of the closure out of and into the frame, the linkage including at least one link pivotally connected to a slider received for sliding movement in the channel, an elongate stop member extending along the channel between the slider and stop on the channel for limiting the opening movement of the slider, the elongate stop member being manually disengageable for allowing additional opening movement of the slider.

2. A stay according to claim 1 wherein the stop member is carried by the slider, is elongate and is urged by a spring into a position in which the stop member engages a stop on the channel, the stop member being movable against the force of the spring to disengage from said stop.

3. A stay according to claim 2 wherein the stop member comprises a spring strip having inherent flexibility to provide said spring and to urge the strip into said stop engaging position, the spring strip flexing to disengage from said stop.

4. A stay according to claim 3, wherein the channel includes a base, upstanding side walls and flanges projecting inwardly from said side walls to define an elongate slot therebetween the slider sliding in the channel and projecting through the slot to connect to said at least one link, the spring strip lying in a plane generally parallel to the base but flexing upwardly to engage inner surfaces of said flanges, the flanges including at least one stop for engagement with an end of the spring strip for limiting said opening movement, the spring strip being flexible to disengage from said at least one stop to allow said additional opening movement.

5. A stay according to claim 2, wherein a spring is provided between the stop member and the channel.

6. A stay according to claim 5, wherein the stop member includes a button at an end thereof remote from the slider, with the spring being arranged between a button and the channel so that depressing the button disengages the stop member from the stop to allow said additional opening movement.

7. A stay according to claim 6, wherein the channel includes a base, upstanding side walls and flanges projecting inwardly from said side walls to define an elongate slot therebetween, the slider including a body sliding in the channel and projecting through the slot to connect to said at least one link, the stop member comprising two parallel but spaced bars projecting from said body along respective grooves each defined by the base, one side wall and one flange of the channel, each stop bar being narrower than the associated groove and sliding in a path adjacent the associated flange, depression of the button depressing ends of the stop bars remote from the body out of said path towards the base to disengage the stop bar ends from the stop to allow said additional opening movement.

8. A stay according to claim 7, wherein the stop bars include respective elongate grooves which face each other, the button comprising parallel guides which engage said grooves to allow sliding movement of the button relative to the stop bars.

9. A stay according to claim 7 or claim 8, wherein the stop comprises a pair of ears pressed out of respective flanges to project into the associated grooves.

10. A stay according to claim 5, wherein the spring comprises a U-shaped spring, the free ends of the U-shaped spring engaging the button and the base of said spring engaging the base of the channel.

11. A friction stay according to claim 1, wherein the stop member is releasable connected to the channel in the path of the slider, for engaging the slider to permit only limited opening movement of the arm.

12. A friction stay according to claim 11, wherein the stop member comprises an elongate bar releasably fixed to the channel and extending along the channel parallel to the length of the channel, movement of the slider being limited by engagement of the slider with an end of the bar.

13. A friction stay according to claim 1, wherein the stop member comprises an elongate restrictor bar connected to the slider for movement therewith, the restrictor bar carrying a detent which, then in an operative position, engages the channel to permit only limited opening movement of the arm.

14. A friction stay according to claim 13, wherein the detent is a screw which, when in a retracted position, permits maximum opening movement of the arm but which, when in an extended position, engages the channel to permit only limited opening movement of the arm.

15. A friction stay according to claim 1, wherein the stop member is elongate and extends along the channel between the slider and a stop on the channel to limit the opening movement of the slider, the elongate stop member being manually disengageable for allowing said additional opening movement.