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Publication numberUS2454794 A
Publication typeGrant
Publication dateNov 30, 1948
Filing dateJul 31, 1945
Priority dateJul 31, 1945
Publication numberUS 2454794 A, US 2454794A, US-A-2454794, US2454794 A, US2454794A
InventorsHakanson Alfred
Original AssigneeHakanson Alfred
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sash holder
US 2454794 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

, Nav. 30, 1948. A; HAKANsoN sAsn Homan Filed July :51, 1945 lllll as l FNM/Irak Hueso Hwa/vm Patented ov. 30, 1948 .OFFICE SS'I Holi Alfred ak'anson, Alhambra; Calif; Applietin July 31, 194:5', serial' Nb. 608,661"

1 claim.-

Thisinvention is concerned with sash holders, the latter term being employed to describe mechanisms elhploy'edl to hol"l`l"1`il'*lgedl doors, Windows and other closure niernbersi'n ailxe'dv angulai lelatin'shp 'Witl'l'fsljebli t6 the Opening tO which they lit. The invention provides -a com*- pa'ot s'ash holder having a' positivelocking" action which is both' simple to operate and install and which is'of simple and ruggedconstruction.

It has been proposed heretoforetoerriploy a chain as a longitudinally' rigid niember forno-1ding sashes in a desired' angular position. However, I have" discovered" that Asash holders made in accordance Vv'v'i'th prior proposals tend t'o collapse 'whenpressu'reis eiferted against thetwo ends of the chain and as a result of inyinvestigations, have developed'an improved chain type of sash holder in which such collapse need not occur. In accordance with my'` invention, I employ' as a nrincipalinember" for holding a' sash in a selected angular position with respect to ajamb, a chain formed of a plurality of links joined end'to end and so constructed that the chain flexe's freely upward., but. downward' only to a slight sagand l slightly if at" all in either llateral direction. Means are provided Vfor fastening' an en`d"f the chain to either-the sash' member or the' "frar'ne member (jarnb') and a clamp through Which the chain passes is" providedfor v'I'r`l`oli`nting` on the other memberand fornolding a given leng'tl'i of the chain-between the twoineinbe'rs in theabove described nosition,.i.e. with the freely' flexing'face of the chain upward so that th'e chain' assumes the slight permissille downward sag;

Apreferre'd embodiment of'rny invention conitemplates the combination in a; sash holder for holding a' sash member in'a chosen angularposition with respect to a frame member to which the sash member isl hinged; which comprises ,a chain formed ofA a series of links, a series'of substantially parallel pins holding the linkstogether,` the chain'be'in'g soconstructed that it is' substantially innexible inv the directions parallel to' the pins and the several links beingl provided With` Stops Which permit the chain t'ofiex freely on Qne'side tr'ansversetotheaXes of :the pins but hold the chain in a slight sag from a straight' line in the opposite direction, means'forfastening an endof'tne chain te one of the members, a clampiiolderformount; ing on the other niemberrwith thel chain passed through the hol'de'rwith* tlefeely ilexiligvsidle" of the chain turned' upward; andV a clamp in the holder for holding'successive links' of the chalnin fixed-relation with respectto the' holder.`

Preferably the clamp holder is a tubular'liiem'- ber adapted for mounting on or inv either the sash member" or the frame member and the clamp itself isA a lever moii'nted in the holder with its axis parallel to those of the pins and with one end 'projecting 4from the holder itself. A spring preferably is provided in the holder for holding one` end of the clamp leverin engagement with the chaimthe 'other end of the lever being achess'ible for control purposes.

As indicated above, I provide a fastenefo'r securing an' end of the chain to either the frame member or the sash member and in a3 preferred form of my device the clamp holder has a recess or'ho'odin or on its face toward the fastener, into which the fastenermoveswhen the' sash is closed.

Conveniently, thelclamp holder has'an aperture nits lower portion through Which the free endof theA chain hangs, for example in a vertical hole bored in the niemher in which the clamp holder is placed; i l

The chain preferably is of slight .but distinctly limited exibility'i'r the` directions parallel to the pins'vvhichj hold the'links together, i. e. in a substantially horizontal plane.f This is convenient when the sash is vertically hinged, for it permits the chain toconfor'm to the periphery of a circle drawn through the clamping means coaxially Withjthe axis of the hinge.

It is desirable-to construct the clamp holder in a t'dbular'form With the endof the tube facing the chain fastener somewhat larger than the opposite end.V rIfhis permits the clamp holder to be in`- serted in a bore wthrough the sashor frame from one side and locked by a detachable ring or collar whicngpreferebly isv threaded around the Smaller end* f't'h'etnbular holder. A

`The foregoing and' other features of myinvention will' beunderstood more thoroughly in the light of the following`- detailed `description taken in conjunction Withthe accompanying drawing, inwhich': 'i

rig. l is aplanview partly insectionU taken through a'hingedwlndoweqnipped With a preferred form of the sash holder of my invention;

Fig. 2r is afseotion talen Ythrough' the clamp hlilerof the apparatus of Fig. 1 alongthe line 22` 'Fig'. Bislan enlargedv plan view of the fastener shown' i'nFig.- 1""fo`r` holding an end of thelchain-to the frameforjarhbyof the v'vin'dovv;

Fig. 4 is a vertical view partly in section't'aken approinlnately along the section line lZ--2 "of Fig. l?, andshowingthe manner in which the free end Of the Cll'aill' hailgsrln ai VltlCallj-IC lli the" Willdivsaslig slips.

Fig. 5 is an elevation of a type of chain link somewhat different from that illustrated in the foregoing figures, but which may be employed satisfactorily in the construction of my invention;

Fig. 6 is a schematic diagram showing how the invention may be employed when the clamp holder is mounted upon the jamb instead of upon the sash member, for example in the case in which Frenchwindows open outward; and

Fig. '7 is a schematic elevational view showing the manner in which the limited sag of the chain permits the chain to act in the manner of a truss and to resist collapse when pressure is exerted from one secured end to the other.

Referring now to Fig. 1, it will be observed that a sash holder I is mounted on the unhinged side of a window sash II, held by a vertical hinge I2 in a frame or jamb member I3. The window is mounted to swing inwardly.

The sash holder comprises a fastener I4 mounted on the jamb, a chain I5 one end of which is secured tothe fastener and a clamp member or holder I6 mounted in a horizontal bore inthe unhinged side of the window sash.

As shown in Figs. 2 and 4, the clamp holder is generally tubular with an enlarged outer end I1 facing the fastening means and a smaller inner end I8 around which a threaded collar I9 may be screwed. The enlarged outer end is in the form u of a collar having a projecting hood 2B into which the fastener member I4 fits when the window is closed. A clamp lever 2l is mounted within the tubular clamp holder .by means of a pin 22 which is fastened to the holder with its axis horizontal and transverse to the major axis of the tube. The inner end 23 of the lever is adapted to engage successive notches in the chain and the outer end of the lever projects through the clamp holder to form a button 24 which is held upward by a 'spring 25 held at its ends respectively in recesses in the button and the clamp holder.

The construction of the chain Iis best seen in Fig-s. 2 and 3. The chain is composed of a series of links each of which is held to an adjoining link by a substantially horizontal pin 26. Each Ylink is provided with a bifurcated end 2'! having a vertical slot into which a projection 28 on an adjoininglink is fitted, adjoining links being held together by the pin which passes through matching holes in the two sides of the bifurcated por tion and in the extension.

The extension 28 makes a relatively tight fit in the vertical slot of the bifurcated portion and the pin ts the holes sufliciently tightly that the chain in a lateral direction has but little lexure. The links turn on the pins and permit the chain to` be flexed freely upwardly if pushed from below. However, the chain is prevented from flexing downwardly by stops 29 in the form of a boss or projection on the upper portion of the projection of each link. TheseA stops overhang and engage the bifurcated portions of adjacent links and rest upon these.

The stops, which project above the chain proper, provide a series of notches 30 on the upper side of the chain, into which the clamp end 23 In this way, the stops perform'a double function in that they limit the sag of the chain and also provide positive catching means for the clamp.

Referring now yto Fig. 3 it will be observed that the fastener is secured to the side of the window jamb by means of a screw 3l. The inside of the fastener is cut away and a hole 32 is provided on the outside for access to the screw. After the fastener has been secured to the jamb by means of the screw, one end of the chain is fastened to it by means of a special link member 33 through which a pin 34 passes into the web 35 of the fastener.

When the window is closed and the chain pulled in to its limit, the fastener on the jamb is covered by the hood on the outside clamp holder. Thus when the windowis secured. the fastener is guarded against tampering.

To consider the operation of the apparatus described in Figs. l to 4 inclusive, it will be observed that by pressing the button 24 the end 23 of the clamp lever is raised out of engagement with the notches in the chain. In this condition, the chain slides freely through the tub-ular clamp holder and the free end of the chain drops into a vertical hole bored in the sash. This hole should be long enough to accommodate the entire lengthof chain made free when the window is closed.

When the window is to be held at a selected angular position, the button is pressed to raise the clamp lever and the window is swung out to the appropriate position. ywhereupon the button is releasedV to permit the lever end 23 to drop into the nearest notch of the chain. The window is then held in the appropriate position until it is desired to change the adjustment.

Referring now to Fig. 5, lwhich illustrates another type of link which may be employed to form a chain for my window stop, it will be observed that the link comprises a bifurcated end 4I having a vertical slot within it. An extension 42 on the opposite end of the link is adapted to t into the bifurcated section on the next link, the two links being held together by a pin passing through holes43 in the bifurcated portion which are matched by a hole 44 in the extension. The extension is adapted to nt fairly snugly into the slot in the bifurcated portion. and its outer sash 45 ts against the end 46 of the slot and acts as a stop to prevent the chain from assuming more than a slight downward sag. The bifurcated portion of the link has an upwardly projecting portion 4l into which fits an upwardly projecting portion 48,011 the extension. The extensions 47, 48 form, in effect, a rigid or notched surface on the upper portion of the chain in much the same fashion as in the chain illustrated by Figs. l to 4 inclusive. It will be observed that a chain composed of links of the type illustrated in Fig. 5 will have the same behavior as that of the other chain, i. e. it will flex freely upwardly when .pressed from below, will have little or no lateral flexure, and is inflexible beyond a slight downward sag. l

Referring howto Fig. y6, it will be observed that with slight modication, Athe sash holder already described may be employed `on a window which opens outwardly. Referring to Fig. 6, it will be observed that a .French window 50 is held to swing outwardly bya vertical hinge 5I attached to a frame or jamb 52. A sash holder 53 constructed in accordance with the invention is mounted on the swinging side of the window.

Referring now to Fig. 7, it will be observed that when the chain of the sash holder of the invention is at rest, with no exterior forces being exerted upon it, it sags slightly. When pressure is exerted by trying to force the sash shut, for example by imposing the forces illustrated at 6I, the chain tends to act as a truss and tends to sag down further as compression is increased. However, the stops on the chain prevent the sag and consequently prevent the Window from closing. truss action under compression is assured. There is, to be sure, a slight slack in the chain so that the movable membery say the Window of the sash combination, is free to swing slightly but when the slack is slight, say not more than 1/2" in a 20 length of chain, the angular freedom of movement of the window is very small, say only a small fraction of an inch as measured at the chain.

For reasons of rigidity and strength, I prefer to form the chain oi solid links. These may be made by forging, stamping, machining and by other mechanical operations, but preferably are formed by die-casting.

I claim:

In a sash holder adapted to hold a sash member in a chosen angular position with respect to a frame member to which the sash member is hinged, the combination which comprises a chain formed of a plurality of adjoining links, each having a bifurcated end and an extension on Since the chain has an initial sag, theV the opposite end adapted to project Within the bifurcated end of the adjoining link, a pin journalled through the bifurcated end of each link and through the extension of the adjoining link, a boss on the upper edge of each of the eXtensions adapted to engage the bifurcated end of the adjoining link to prevent flexure of the chain in more than one direction, means for fastening an end of the chain to one of the members, and a clamp adapted to be mounted on the other member for holding a given length of chain between the two members by engagement with one of said bosses.


REFERENCES CITED The following references are of record in the nie of this patent:

UNITED STATES PATENTS Number Name Date 482,227 Conner Sept. 6, 1892 1,319,396 Jones Oct. 21, 1919 2,048,131 Madsen July 2l, 1936 2,080,656 De Vries May 18, 1937 2,131,261 Aldeen et al Sept. 27, 1938 2,185,161 Tinnerman Dec. 26, 1939 FOREIGN PATENTS Number Country Date 23,421 Great Britain Sept. 16, 1930 321,230 Great Britain Nov. 7, 1929

Patent Citations
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2755122 *Apr 7, 1954Jul 17, 1956Salo WilliamWindow brace
US2816431 *Jan 4, 1957Dec 17, 1957Harney William JChain lock for closures
US2904347 *Sep 1, 1955Sep 15, 1959Bryant Tucker LeslieSafety belt for vehicle occupants
US2985447 *Feb 7, 1958May 23, 1961Braskamp W H NvLocking and operating mechanism for a closure
US3315502 *Oct 22, 1965Apr 25, 1967Bronx Locksmiths IncAutomobile hood locking latch device
US3339963 *Sep 8, 1965Sep 5, 1967Chambers Franklin ECombination door safety chain and lock
US3431677 *Oct 12, 1967Mar 11, 1969Zoltok HarrySash release mechanism
US4027907 *Apr 8, 1976Jun 7, 1977International Top Security CorporationSecurity chain lock for doors
US4253689 *Apr 24, 1979Mar 3, 1981Scott & Fetzer CompanySpring latch mechanism
US4521993 *Aug 8, 1983Jun 11, 1985Truth IncorporatedChain operator for a window
US4580820 *Jan 28, 1985Apr 8, 1986Baber Murray JSecurity devices
US4876864 *May 6, 1988Oct 31, 1989Dowell Australia LimitedCombination lock
US6015327 *Sep 29, 1998Jan 18, 2000Kovacs; Ernest DavidWind powered bubble making device
US20070113480 *Dec 7, 2005May 24, 2007Kia Motors CorporationLink structure of power tailgate
US20110302843 *Dec 15, 2011Dallmann Brian DWindow drive with back-curving chain
U.S. Classification292/264, 292/267, 49/325, 24/116.00R
International ClassificationF16G13/18, E05C17/36
Cooperative ClassificationE05C17/36, F16G13/20
European ClassificationF16G13/20, E05C17/36