US2775000A

US2775000A - Locking mechanism for awning type windows

Info

Publication number: US2775000A
Application number: US568220A
Authority: US
Inventors: George M Kleinknecht
Original assignee: WOODCO CORP
Current assignee: WOODCO Corp
Priority date: 1956-02-28
Filing date: 1956-02-28
Publication date: 1956-12-25
Anticipated expiration: 1973-12-25

Description

Dec. 25, 1956 G. M. KLEINKNECHT LOCKING MECHANISM FOR AWNING TYPE wmoows Filed Feb. 28, 1956- 2 Sheets-Sheet 1 A u 6% 4W 1% I 8 T? mi w mm KWM/ m m Z W e 4 Dec. 25, 1956 G. M. KLEINKNECHT 7 2,775,000

LOCKING MECHANISM FOR AWNING TYPE WINDOWS Filed Feb. 28, '1956- 2 Sheets-Sheet 2 ATTORNEY Woodco Corporation, North. Bergen, N. 3., a corporation of New Jersey Application February 28,1956, s nal No. 568,220

15 Claims.' or. 20-42 7 The invention relates to awning type windows having sliding and swinging sash members.

In sash structures of the typeunder consideration, a manually operable locking lever or crank is located on the inside of the window frame to secure the sashes against untoward efforts to pry them open from the outside. One of the difiiculties encountered has been that it is possible to move the locking lever, accidentally or otherwise, when the sashes are in open position, and as a result, when the operating elements are moved to bring the sashes to closed position, the elements of the lockingmechanism are not in a position to permit complete closing and locking of the sashes. If one is not conversant with the relationship of the concealed linkage and the locking elements, as is frequently the situation, the window structure is considered out of order or is damaged by attempts to close it.

In accordance with my invention, the foregoing difficulty is obviated by novel means which functions to maintain the elements of the locking mechanism in their proper relationship. By virtue of my construction, the locking lever cannot be moved, either purposely or accidentally, to disturb the proper relationship of the ele ments comprising the means for opening, closing and locking the sashes. Operation and secure locking of the sashes is assured at all times.

These, and other objects, advantages and results of the invention will be brought out by the following description, taken in conjunction with the accompanying drawings, in which:

Fig. l is an elevational view taken from the inside of a window frame having awning type, vertically sliding and swinging window sashes therein, the sashes being shown in their fully closed and'locked position;

Fig. 2 is a vertical cross-sectional view taken approximately in the plane of line 22 of Fig. 1 showingthe novel locking mechanism of my invention, the sashes being omitted for the purpose of clarity in illustration;

1 Fig. 3 is, a horizontal cross-sectional 'view taken approximately in the plane of line 3-3 of Fig. 2;-

Fig. 4 is a view similar to Fig. 2, but showing the.

position of the sashes (shown in phantom) in their fully opened position; and

Fig. '5 is a view similar to Fig. 4 showing the sashes in a partly open position, just prior. to their being moved to the fully closed andlocked position shownin Fig. 2.

'

members

12 and 14 secured to a pair of horizontally extending spaced upper and

lower frame members

16 and 18. In the embodiment illustrated, two (2) rectangularly shaped

sashes

20 and 22 are shown within which are set the

glass panes

24 and 26, respectively.

The sashes may be of wood or-metal, with the former preferred. Although two sashes are shown, it is within the ber of sashes may be used. 70.

posite or inside wall 30, the side walls being connected .by the base wall 32. The end of each side wall is'provided with a similar vertically extending groove 34 to receive the tongue portion 36 of flexible molding or weather-stripping 38, thereby assuring a secure weathertight fit of the sashes within the frame when the sashes are in fully closed position. The wall 30 is provided with a vertically extending trackway 40, which preferably is formed as an integral part of the extruded channel memher.

To actuate or move the sashes from opened to closed positions, and vice-versa, an actuating slide bar 42 is mounted within the channel 12 for reciprocable movement in a vertical direction. The movement of the slide bar may be properly confined by means of spaced guide blocks (not shown) located within the trackway 40 and secured to the slide bar. A sash bracket 44, to which the sash 20 is fastened, is pivoted at one end to the lower end of the slide bar by means of a pin 46. A link 48 is provided to support the sash bracket. The top end of the link is pivotally connected to the bracket by means of a pin 50 intermediate the ends of the bracket. The lower end of the link is pivotally secured to the channel 12 bya pivot pin 52. The link is provided with an obliquely, extending locking slot 54 near the end adjacent the sash bracket.

To lock the sash bracket 44 and its sash 20 in closed position, a locking bar 56 is mounted for reciprocable movement in a vertical direction in the window frame channel 12. The locking bar is preferably confined for its up .and down movement by means of spaced guide blocks 58 which ride in the trackway 40, one of such guide blocks being shown in Fig. 3. The upper end of the locking bar is located below the lower end of the slide bar. Near the upper end of the locking bar, a locking stud 60 is provided. The locking stud extends laterally from the locking bar, and is preferably provided with a rotatable collar 62 at its end. The locking stud may also serve to secure the locking bar 56 to the guide block '58, as shown in Fig. 3. A manually operable locking lever or crank 64 is secured to the lower end of the locking barby a pin 66, the lever being pivoted for rotation about the axis provided by the link pivot pin 52.

: tion, as shown in Fig. 4, the sash 20 is in its fully opened position. As the slide bar is moved upwardly, as to the position shown in Fig. 5, the sash is moved toward .closed position, and when the slide bar is raised to its fullest height, as shown in Fig. 2, the sash is in fully closed position. .Any suitable operating mechanism may be provided'for imparting movement to the slide bar to open and close the sashes.

A conventional rack and pinion drive (not shown) may be used, the mechanism being actuated by the crank 68 mounted on the window frame, as shown in Fig. 1.

It will be understood, of course, that any desired num- In the embodiment of the inyention illustrated, one other such sash 22 and the actuat- -,-ing elementstherefor being shown. 'The sash' 22 is secured to a sash bracket 70, one end of which is pivotally connected by a pin 72 to the upper end of the slide bar 42. A second pin 73 connects the sash bracket to a slide bar guide block (not shown) located in the trackway 40. The connection is of the floating type, there being a heart-shaped opening '74 to receive'the

pins

72 and 73 for a purpose to be subsequently described. A link 76 for supporting the sash bracket 70 and sash 22 is pivotally connected to the bracket at its top end by a pin 78 intermediate the ends of the bracket' At its lower end the link is pivotally connected to the channel 12 by' a pin 80.- The link is provided with an obliquely extending locking slot 82 near the end adjacent the sash bracket, the slot being adapted to cooperate with a locking stud 84 secured to the slide bar and extending laterally therefrom.

In the construction thus far described, the manually operable locking lever 64 may be rotated from its uppermost position, as shown in Fig. 4, to its extreme lowermost position, as shown in Fig. 2, or to some intermediate position, even though the sashes are in fully opened or partially opened position. Such movement of the locking lever may be caused by an inquisitive child, or accidentally by an adult. If the locking lever is prematurely rotated, the locking stud 64 is moved in an upward direction so that when the operating crank 68 is turned to close the sash or sashes, the locking stud 60 will not be in a position to be received within the locking slot 54 as the sash is about to be fully closed, as shown in Fig. 5. The nose portion of the link, designated 86, will then engage the locking stud and full closure of the sashes is prevented. Also, the link 76 cannot move to fully closed position to allow locking stud 84 to enter slot 82. The sashes cannot be locked, because they cannot be fully closed.

In order to prevent the foregoing from occurring, I have provided locking stud positioning means, generally designated 88, associated with the locking bar which normally acts to prevent movement of the locking lever, thereby preventing movement of the locking bar and undue displacement of the locking stud 60, until the locking stud is received within the locking slot. The locking stud positioning means is rotatably mounted so that it is engageable by, and is responsive to the movement of, the link Only when the locking stud is received within the locking slot, may the locking lever be moved, and at such time the operating linkage cannot be jammed. Means 88 is preferably a thin metal plate pivotally mounted on the locking stud 60. The plate constitutes a holding means for the locking bar, and with it the locking lever, until the link providing the locking slot engages it to release the holding means and allow movement of the locking bar.

In the preferred embodiment shown, the plate 88 is in the form of a toothed pawl or dog, and is provided with a series of teeth 90 on one side and a laterally extending lug 92 on the other side. The plate is generally triangular in shape andis pivoted to rotate about the axis provided by the stud 60. The geometry of the plate and the point at which it is pivotally mounted on the stud are such that the plate normally, or by gravity alone, has the teeth in engagement with an adjacent area of the frame channel 12. Any attempt to prematurely move the locking lever 64 from its uppermost position,'as shown in Fig. 4, will cause the teeth to bite into the adjacent surface and prevent movement of the locking lever.- When, however, the slidebar is actuated to bring the sashes to closed position, and the supporting link 48 reaches the position shown in Fig. 5, the link engages the lug 92 and causes the plate 88 to rotate. The teeth 90 move away from holding position so that the locking lever may then be moved or rotated toward locking position." At this point, the locking stud 60 has already entered the locking slot 54, so that rotation of the locking lever downwardly or toward the position shown in Fig. 2, locks the sashes. As the locking lever is moved down, the locking bar' slides in an upward direction and causes the locking stud 60 to move up to the base of the slot 54, and the link 48 is cammed to upright position. The link being connected to the sash bracket 44, which in turn is connected to the slide bar 42, the slide bar is caused to move up an amount substantially equal to the effective vertical height of the slot 54. The heart-shaped opening 74 permits theresulting relative movement between the sash bracket 70 and the slide bar of the linkage, the pin 72 being then seated at the lower end of the opening. It will be evident that the elements are so arranged that-the-sash 22 is also locked, because the looking slot 82 of the link 76 has also passed over the locking stud 84.

To open the sashes, the locking lever is rotated from the position shown in Fig. 2 in an upward direction to the position shown in Fig. 5; The slide bar 42 moves down and the locking studs ride out of their respective locking slots. As the link 48 swings out of the channel 12, the lug 92 is disengaged, permitting the plate 88 to rotate about its pivot so that-the teeth 90 now engage the adjacent area of the channel to prevent movement of the locking stud 60, the locking bar 56 and locking lever 64. Turning the crank 68 swings the sashes toward more fully opened position.

The locking stud positioning or holding plate illustrated is a preferred form of the invention. It is within the purview of the invention to provide a friction material, such as rubber, on the plate as the holding means instead of the toothed structure. Also, instead of using the base wall 32 as the surface for cooperation with the holding portion of the plate, it is within the scope of the invention to-provide some other surface for this purpose. This, however, would require an additional element, and it is preferred to simply use an adjacent area of the window channel frame.

While in the illustrated form of the invention, sash brackets are provided for mounting of the sashes, itwill be understood that the sash members themselvesmay be used in the described linkages and the sash brackets eliminated. It is preferred, however, to use intermediate sash brackets because these may be of a light, weatherresistant material such as aluminum, and the sash frames may be of wood. It will be understood that reference to a sash bracket in the claims is intended to include either a sash member directly connected to a supporting link, or a sash bracket having a sash member secured thereto as illustrated.

The invention has been described in connection with the drawings which illustrate a window frame in which the slide bar and locking lever are mounted for movement in a vertical direction to swing the sash members in a vertical plane, and reference is also made to upper and lower ends of some of the operating parts. Such indications of direction and location are merely convenient terms to best describe the invention in relation to the orientation of the window frame and its operating structure as illustrated. It will be understood that the entire window frame may be turned 90, if desired, so that the slide bar and locking bar, instead of being moved in a vertical direction would be moveable in a horizontal plane or'from side to side, whereupon the sashes would correspondingly be opened and closed in a horizontal plane.

It is believedthat the advantages of the described improved awning type window and locking mechanism therefor Will be apparent from the foregoing detailed description It will also be apparent that while the invention has been shown and described in its preferred form, changes may be made without departing from the spirit and scope ofthe invention as sought to be defined in the following claims.

I claim:

1. A window structure of the awning type comprising a window frame channel, a slide bar mounted in said channel for reciprocable movement, a sash bracket pivotally connected to said slidebar, a link pivotally connected at one end to said channel and at' the other end to said sash bracket, said link having a locking slot near the end adjacent said sash bracket, a locking bar mounted in said channel for reciprocable movement, a locking stud provided near the upper end of said locking bar for cooperattion with said slot, a locking lever connected to the lower end of said locking bar for imparting reciprocable movement to said locking bar, and means normally acting to prevent movement of the locking lever and locking bar to thereby maintain said stud in position to be received within said slot, saidmeans being engaged by said link as the stud is received within the slot to allow movement of the locking lever and locking bar to sash-locking position.

2. A window structure of the awning type comprising a window frame channel, a slide bar mounted in said channel for reciprocable movement, a sash bracket pivotally connected to said slide bar, a link pivotally connected at one end to said channel and at the other end to said sash bracket, said link having a locking slot near the end adjacent said sash bracket, a locking bar mounted in said channel for reciprocable movement, a locking stud provided near the upper end of said locking bar for cooperation with said slot, a locking lever connected to the lower end of said locking bar for imparting reciprocable movement to said locking bar, and holding means associated with said locking bar normally acting to prevent movement of the locking lever and locking bar to thereby maintain said stud in position to be received within said slot, said holding means being engaged by said link as the stud is received within the slot to cause said holding means to move to a position allowing movement of the locking lever and locking bar to sash-locking position.

3. A window structure of the awning type comprising a window frame channel, a slide bar mounted in said channel for reciprocable movement, a sash bracket pivotally connected to said slide bar, a link pivotally connected at one end to said channel and at the other end to said sash bracket, said link having a locking slot near the end adjacent said sash bracket, a locking bar mounted in said channel for reciprocable movement, a locking stud 7 provided near the upper end of said locking bar for cooperation with said slot, a locking lever connected to the lower end of said locking bar for imparting reciprocable movement to said locking bar, and a stud positioning plate rotatably mounted on said locking bar, said plate having a holding portion normally engaging an adjacent area of said channel to prevent movement of the locking lever and locking bar to thereby maintain said stud in position to be received within said slot, said plate having another portion engaged by said link as the stud is received within the slot to cause said holding portion to rotate to a position allowing movement of the locking lever and locking bar to sash-locking position.

4. A window structure of the awning type comprising a window frame channel, a slide bar mounted in said channel for reciprocable movement, a sash bracket pivotally connected to said slide bar, a link pivotally connected at one end to said channel and at the other end to said sash bracket, said link having a locking slot near the end adjacent said sash bracket, a locking bar mounted in said channel for reciprocable movement, a locking stud provided near the upper end of said locking bar for cooperation with said slot, a locking lever connected to the lower end of said locking bar for imparting reciprocable movement to said locking bar, and a stud positioning plate, said plate having a holding portion on one side and a link-engaging portion on the other, said plate being so shaped and pivoted on said stud that the holding portion normally engages an adjacent area of said channel to prevent movement of the locking lever and locking bar to thereby maintain said stud in position to be received within said slot, engagement of the link with said linkengaging portion causing said holding portion to rotate to a position allowing movement of the locking lever and locking bar to sash-locking position.

5. A window structure of the awning type comprising a window frame channel, a slide bar mounted in said channel for reciprocable movement, a sash bracket pivotally connected to said slide bar, a link pivotally. connected at one end to said channel and at the other end to said sash bracket, said link having a locking slot near the end adjacent said sash bracket, a locking bar mounted in said channel for reciprocable movement, a locking stud provided near the upper end of said locking bar for cooperation with said slot, a locking lever connected to the lower end of said locking bar for imparting reciprocable movement to said locking bar, and a stud positioning plate, said plate having a toothed portion on one side and a laterally extending lug on the other, said plate being so shaped and pivoted on said stud that the toothedlportion normally engages an adjacent area of said channel to preventmovement of the locking lever and locking bar to thereby maintain said stud in position to be received within said slot, engagement of the link with said lug causing said toothed portion to rotate to a position allowing movement of the locking lever and locking bar to sash-locking position. a r

6. A window structure of the awning type comprising a window frame channel, a trackway formed within said channel and extending along the length thereof, a slide bar mounted for reciprocable movement along said trackway, a sash bracket pivotally connected at one end :to said slide bar, a link pivotally connected at one end to said channel and at the other end to said sash bracket,

said link having a locking slot near the end adjacent said sash bracket, a locking bar mounted for reciprocable movement along said trackway, the upper end of the locking bar being located below the lower end of said slide bar, a locking stud provided near the upper end of said locking bar, a locking lever pivotally connectedto said channel and secured to the lower end of said locking bar for imparting reciprocable movement to the locking bar, and means normally acting to prevent movement of'the locking lever and locking bar to thereby maintain said stud in position to be received within said slot, said means being engaged by said link as the stud is received within the slot to allow movement of the locking lever and locking bar to sash-locking position.

7. A window structure of the awning type comprising a window frame channel, a trackway formed within said channel and extending along the length thereof, a slide bar mounted for reciprocable movement along said trackway, a sash bracket pivotally connected at one end to said slide bar, a link pivotally connected at one end to said channel and at the other end to said sash bracket, said link having a locking slot near the end adjacent said sash bracket, a locking bar mounted for reciprocable movement along said trackway, the upper end of the locking bar being located below the lower end of said slide bar, a locking stud provided near the upper end of said locking bar, a locking lever pivotally connected to said channel and secured to the lower end of said locking bar for imparting reciprocable movement to the locking bar, and holding means associated with said locking bar normally acting to prevent movement of the locking lever and locking bar to thereby maintain said stud in position to be received within said slot, said holding means being engaged by said link as the stud is received within the slot to cause said holding means to move to a position allowing movement of the locking lever and locking bar to sash-locking position.

8. A window structure of the awning type comprising a window frame channel, a trackway formed within said channel and extending along the length thereof, a slide bar mounted for reciprocable movement along said trackway, a sash bracket pivotally connected at one end to said slide bar, a link pivotally connected at one end to said channel and at the other end to said sash bracket,

said link having a locking slot near the end adjacent said sash bracket, alocking bar mounted for reciprocable movement along said trackway, the upper end of the locking bar being located below the lower end of said slide bar, a locking stud provided near the upper end of said locking bar, a locking lever pivotally connected to said channel and secured to the lower end of said locking bar for imparting reciprocable movement to the locking bar, and a stud positioning plate rotatably mounted on said locking bar, said plate having a holding portion normally engaging an adjacent area of said channel to prevent movement of the locking lever and locking bar to thereby maintain said stud in position to be received within said slot, said plate having another portion engaged by said link as the stud is received within the slot to cause said holding portion to rotate to a position allowing movement of the locking lever and locking bar to sash-locking position.

9. A Window structure of the awning type comprising a window frame channel, a trackway formed within said channel and extending along the length thereof, a slide bar mounted for reciprocable movement along said track- Way, a sash bracket pivotally connected at one end to said slide bar, a link pivotally connected at one end to said channel and at the other end to said sash bracket, said link having a locking slot near the end adjacent said sash bracket, a locking bar mounted for reciprocable movement along said trackway, the upper end of the locking barbeing located below the lower end of said slide bar, a locking stud provided near the upper end of said locking bar, a locking lever pivotally connected to said channel and secured to the lower end of said locking bar for imparting reciprocable movement to the locking bar, and a stud positioning plate, said plate having a holding portion on one side and a link-engaging portion on the other, said plate being so shaped and pivoted on said stud that the holding portion normally engages an adjacent area of said channel to prevent movement of the locking lever and locking bar to thereby maintain said stud in position to be received within said slot, engagement of the link with said linkengaging portion causing said holding portion to rotate to a position allowing movement of the locking lever and locking bar to sash-locking position.

10. A Window structure of the awning type comprising a window frame channel, a trackway formed within said channel and extending along the length thereof, a slide bar mounted for reciprocable movement along said trackway, a sash bracket pivotally connected at one end to said slide bar, a link pivotally connected at one end to said channel and at the other end to said sash bracket, said link having a locking slot near the end adjacent said sash bracket, a locking bar mounted for reciprocable movement along said trackway, the upper end of the locking bar being located below the lower end of said slide bar, a locking stud provided near the upper end of said locking bar, a locking lever pivotally connected to said channel and secured to the lower end of said locking bar for imparting reciprocable movement to the locking bar, and a stud positioning plate, said plate having a toothed portion on one side and a laterally extending lug on the other, said plate being so shaped and pivoted on said stud that the toothed portion normally engages an adjacent area of said channel to prevent movement of the locking lever and locking bar to thereby maintain said stud in position to be received within said slot, engagement of the link with said lug causing said toothed portion to rotate to a position allowing movement of the locking lever and locking bar to sash-locking position.

ii. A window structure as set forth in claim 6, wherein a second sash bracket is pivotally connected at one end to said slide bar, and a second link is pivotally connected to said channel and the second sash bracket, the second link being provided with a locking slot near the end adjacent the second sash bracket for cooperation with a second locking stud secured to the slide bar.

12. A window structure as set forth in claim 7, wherein a second sash bracket is pivotally connected at one end to said slide bar and a second link is pivotally con nected to said channel and the second sash bracket, the second link being provided with a locking slot near the end adjacent the second sash bracket for cooperation with a second locking stud secured to the slide bar.

13. A window structure as set forth in claim 8, wherein a second sash bracket is pivotally connected at one end to said slide'bar, and a second link is pivotally connected to said channel and the second sash bracket, the second link being provided with a locking slot near the end adjacent the second sash bracket tor cooperation with a second locking stud secured to the slide bar.

14. A window structure as set forth in claim 9, wherein a second sash bracket is pivotally connected at one end to said slide bar, and a second link is pivotally connected to said channel and the second sash bracket, the second link being provided with a locking slot near the end adjacent the second sash bracket for cooperation with a second locking stud secured to the slide bar.

15. A window structure as set forth in claim 10, wherein a second sash bracket is pivotally connected at one end to said slide bar, and a second link is pivotally connected to said channel and the second sash bracket, the second link being provided with a locking slot near the end adjacent the second sash bracket for cooperation with a second locking stud secured to the slide bar.

No references cited.