US1656818A - Window fastener - Google Patents

Description

Jan. 17, 1928.

J. w. DILLON WINDOW FASTENER Filed Fel: 18, 1927 iNVENTOR JWBILZZOH/ m ATTORNEY WITNESSES Patented Jan. 17, 1928.

uurreo srrss JAMES WILLIAMSON DILLON, OF ATLANTA, GEORGIA.

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Application filed. February 18, 1927. Serial No. 169,171.

This invention relates to window fasteners, and has for its object the provision of a device for automatically securing a sash in predetermined position so that the room may he ventilated while at the same time preventing an unauthorized person from the outside actuating the fastener and opening the win dow sufficiently to enter.

A further object of the invention is the provision of a window fastener including a pivoted catch which is adapted to automatically drop iinto contacting relation with a plurality of spaced shoulders for automaticallysecuring a pair of sash against reciproeating movement relative to each other whereby the sash are automatically locked in any position either with one of the sash partlyopen for ventilating.purposes or with the sash closed. a

'lhis invention will he best understood from Li-consideration of the following detailed description, in view of the accompanying drawings forming a part of the specifi ation; nevertheless it is to heunfderstood that the invention is not confined to the disclosure, being susceptible of such changes and modifications which shall define no material departure from the salient features of the invention as expressed in the appended cl aim.

1n the drawing:

Figure 1 is a view in perspective of the window showing a pair of sash secured in closed position by the device constructed in accordance with the principles of my invention Figure 2 is :1V View in perspective of one form of a unitary structure of spaced keeper,

Figure 8 is a vertical section of myim proved automatic locking catch,

Figure e is a horizontal section taken along the line lal of Figure 2,

Figure 5 is a view in perspective of a modified form of unitary structure of the series of keepers,

Figure (3 is a vertical section taken along the line 6-6 of Figure 5, and

Figure '1' is a horizontal section taken along; the line 77 of Figure 5.

Referring more particularly to the drawings, 10 designates a casing in which the frames 11 and 12 are slidahly mounted and in which the outer face of the frame 12 is in close association with. the inner face of the frame 11. The lower bar 13 of the frame 11 is adapted to align with the upper bar let of the frame 12 when the frames are in closed position. Normally the inner faces of the bars 13 and 1d are in contact throughout their length and a flange (not shown) projects inwardly from the bar 13 for engagement with the outer face ofthe bar 14.

Secured to the side bar 15 of the frame 11 a keeper har'lG formed of any suitable.

material preferably sheetinetalfwhich is cut and stampedto. provide a plurality keepers 17 disposed in spaced relation at various horizontal levels. This keeper bar has side flanges 18 and 19 between which areflocated tongues 20 pressed inwardly from an upper edge of the keepers 17 and supported by flanges 21 whereby a tongue 20 is offset from the plane of the keeper 17. The underface of each keeper provides a shoulder 22 for a purpose which will he presently described; The keeper bar has aplurality of perform tions 23 adapted to receive screws or any form of securing means for stitching the to the frame 11. The lower end of the bottom 13015 the frame 11 is cut away adjacent the head 2st to permit ready sliding move menthetween the frames 11 and 12.

Referring more particularly to Figs. 5 to 7, inclusive. :1 modified form of keeper bar isshown in which the bar 25 is formed of a single strip of metal and bent to provide flanges 26 and 27. The outer face of the bar is stamped to form attachingflanges 28pm) vided with perforations 29 to receive a screw. or nail for securing the keeper bar to the window frame. The central portion 30 of the bar is so stamped that it will provide inclined faces 31 and shoulders 82. The upper edge of each inclined face is disposed adjacentthe outer edges of the flanges 26 and 27. lVhen the face of the bar is stamped inwardly as has been explained, side flanges 33 are formed for maintaining the inclined faces 31 in a predetermined position with respect to the flanges 26 and 2? A more economical form of keeper bar will he formed of a flatstrip of metal stamped to provide the shoulders 32 and connecting inclined faces 31 and thereby eliminating the side flanges 26 and 27.

A catch generally designated by the numeral 34: is adapted to cooperate with the keeper bar for locking the frames in predetermined positions.

Referring more particularly to Fi 3 a bracket plate 35is shown having side flanges 36 formed integrally with the base 35 and with a rear wall 37. The upper edges ofthe side plates are inclined at anangle to the horizontal, as shown at 38. The side walls 36, base member 35, and rear wall 37 form a chamber 39 in which the lower end of a catch 40 per se. is rockably mounted on a pin 41 .mounted in perforations in the side walls of v the bracket. It will also be noted that the greater portion of the keeper is located outwardly of the pivot pin 41 so that the head 42 of the keeper will tend to move downwardly to wards the base plate 35 by gravity. The upward movement of the head 42 is limited by the rear edge 43 of the catehby reason of the fact that itengagesthe upper edge 44 of the rear wall 37 when it is moved to its operativeposition shown. in dotted lines. The forward edge ofthe catch is provided with a shoulder 45 for a purpose which will presently be explained. 'A finger p1ece 455 is provided which may be engaged by the hand for rocking the catch 40 for releasing the same from the keepers.

The operation of my device is asfollows: Thecatch is shown in operative position at 3a in Fig. 1 in engagement with the lowermost keeper 1'? of the keeper bar and in which the rounded portion do of the head 42 is engaged beneath the keeper and prevents the frames 11 and 12 being moved relativeto each other for opening a window. In order to open the window the finger pressed upon the member 45 which causes oscillation of the catch a0 whereby the head 42 will be removed from engagement with the keeper. The windows may then be moved relative to each other. When the frames are again moved to their normal closed position the outer face l? of the catch rides over the keepers which is facilitated by the rounded portion 416 of the head a2.

By this construction it will be seen that either frame 11 may be lowered sufficiently to ventilate a room or the frame 12 may be raised a predetermined distance or both frames may be moved relative to each other to provide a space between the casing and the outer edges of the frames. In this posit-ion of the frames, however, it isiinpossible to move the frames for providing a greater opening since the head 42 of the catch will always be in engagement witha shoulder to prevent unauthorized movement of the frames. However, if it be desired to move the frames so that they will be 111 normal closed position the face 47 of the catch will ride over the keepers for this purpose. In closing the windows it is not necessary to move any locking mechanism since the frames can be moved to closed position and the gravity-actuated catch 40 will drop into place beneath a keeper and lock the win dows against further movement. it will also be appreciated that due to the particular construction of the locking mechanism and its position that the windows may be opened a sufficient amount for ventilation while pre venting any one from artuatiug the catch from the outside.

Another important feature of the invention is the particular construction which will prevent an unauthorized person from operating the catch -l-O by the insertion of a flat tool between the bars liiand 1 llor moving the head l-.2 out of engagement with the keeper. It will be noted that the head is cut away to provide a lip 50 which is disposed at an angle to the horizontal. when the head is in operative engagement with the keeper. If a an piece o1. n'ictal or a knife were inserted between the bars 13 and let and placed in engagement with the lip 50 and the knife were forced upwardly it would tend to move the head along a line which is in the vertical plane of the tool and would thus tend to prevent rocking of the catch. Furthermore, the outer edge or shoulder 45 of the catch extends sullicientl i' forwardly that is would tend to press agar at the knife or tool and wedge it against the keeper bar 16 and prevent further mo vcmcnt of the tool between the bars lfland let. The bracket which includes the base member 35, side walls :30 and rear wall 3? has flanges 5.1fm securing the bracket to the upper face of the bar l l so that the catch an will be in line with the keepers 1T. y

The asi-tion of the catch ill with respect to the keepers 32 of the modified form of keep or bars shown in Figs. 5 tot"; inclusive, identical in all respects with ilielwepers ill of the l(@(:: ')til.' bar 1.6. l l I claim li fwindow fastener comprising a keeper bar having a plurality of spaced shoulders, a bracket a catch having a body pivotally mountedon the bracket, said catch being provided with a keeper engaging head hav ing a rounded portion adapted tobe engaged beneath a shoulder, said pivotal coir nection for the catch being at one side of the center of gravity so that the head will be normally maintained in o1. erativc position with the keeper bar, the body having an angular portion projecting below the head and normally within the confines of the bracket, the head having a relatively hmg straight portion adapted tolie in lhitcon tact with a portion of the keeper bar and provided with a lip at the lower end, said lip being adjacent and in line with the apex of the angular portion of the body and forming with the body a notch, said notch disposed contiguous with an inner edge of the bracket, the notch terminating at the inner end thereof adjacent the upper end of the bracket, the disposition of the notch, the inner edge of the bracket, and lip being such that if an instrument is used to raise the catch from the outside the instrument 10 will be forced into engagement with the lip and the catch will be tightly wedged against said instrument and. prevent movement of either sash.

JAMES WILLIAMSON DILLON.

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