US2379970A - Safety window screen and door lock - Google Patents

Description

y 1945- J. H. KOEBEL. I 9 I SAFETY WINDOW SCREEN AND DOOR LOOK Filed Sept. 11, 1943 IN VEN TOR.

wee 07L ff. foebel Patented July 10, 1945 SAFETYWINDOW omen. 9

SCREEN AND noon LOCK V Josepl H.KoebeLRoclrlslanmlll. I H Application September 11, 1943, Serial No.5 1 ,913

3 Claims. (01. 292-106) This invention is directed to means comprising a safety mechanism for locking windows, screens, doors or the like. primarily adapted for coacting with a hook and eye unit, so that such device need not necessarily The device of this invention'is be limitedto lock the aforesaid articles, but has other uses wherever hooks and eyes are employed as for container or box covers or for any other hook locked members.

It is known from experience that when hooks and eyes are usedas for locking ascreen door, a

window screen or any kind of a door, that chilv dren will invariably find a way to open such hooks as a matter of natural curiosity or to be able to open a door to get out when not watched. Dogsor even cats may also be able to cause unlatching of a hook by jumping against a door. The situation is not fool proof by anymeans.

Anotherthing which occurs every now and then is the self latchingof the hook upon the slamofa door which is purely accidental but also very annoying and diiiicult when that does occur. l i

One of the main objects therefore-of this in vention is to provide a locking mechanism in combination with a hook and eye in such a manner as to guard again'sthooks becoming unhooked from hook eyesparticularly where doors are being rattled or otherwiseshaken by a small child, animals orevenby some outsider whois trying to gain entry-by jarring or 'poundinga hooked door. I

Another "object of this inventionis to be able to use .ahook and eye so mounted as to eliminate any accidental latching of the hook with the eye. Also the hook is mounted for swinging in a horizontal plane instead of the usual verticallyoper ableposition when'employed for looking 'a door which permits greater ease ofhandling since the hook is moved out of the adjacent corner between the door and door frame instead of upwardly in said corner in' the usual way. 1

A iurther object is to provide alockin g device which can be easily operated manually by adults through proper. manipulation but also one which is of a nat'ureiasto be maintained secretly operable to younger children so that they cannot readily acquire the knack of opening the same.

Otherobjects' and advantages shall hereinafter appear in the following detailed description of the device of this invention having: reference to the accompanying drawing forming a part of this disclosure.

In the drawing:

Fig. 1 is a front elevational view of a preferred a window or the like.

embodiment of this invention, viewed as seen from the interior of ahouse andlooking at a screen door; I a 1 p p 1 Fig.2 is a sectional'view edgewise of the plane of the door substantially as seen along the.

,2--2 in Fig. 1; i i

Fig. 3 is i a plan sectionalzlview of the. above device as taken along the line 3 3 in Fig. 1; f

Fig. 4 is an illustration identical withF'ig. 2' but withthe hook lockmoved to inoperative position forpermitting theremoval of the hook from its latching eye; 1 i I c Fig. 5 is an illustration of a modified locking mechanism coacting with a hook and as viewedin the same" manner as Fig. 2;

. Fig. 6 is another view of the modified arrange ment of Fig. 5 with the locking means shiftedto permit removal of the hook fromits eye; and

Fig. 7 is a diagrammatic showingof one. of:

either form of hook and lock means as applied to Figs. 11to 4 inclusive are concerned with a preferred arrangement? of the present device. 1 These 7 figures show a hook II) with its connected screw eye II secured to a screen door. l2. with the hook having latching engagement with thescreweye l3 fastened tothe'doorcasing M. It shouldbe noted that the hookismountedfor-swinging in a horizontal plane as best shown in Fig. 3.

A guard or look in the form' of a shield I5 is mounted on the casing l4 adjacent the endof the hook. Hi that'is' connectible with the eye I3 l The shield I5 is shiftablegenerally verticallyupon the screws l6 and I1 which provide the instrumentalities for mounting shield l5; and slots l8 and 20 .of the shiel'dcooperate with the screws to permit theshiftingof the shield; e

Shield I5 is preferably made by bending a fialt plate or thin sheet metal piece to forrntw'o distinct. legs 2| and 22, the "former providing a safety guardsurfaceqprimarily for holding the hook Hi locked whenin latched position, and the latterhaving the screw slots 18" and 20 therein which cooperate with ;the screws lfi and I l to dispose the leg 22 in substantial parallel relation to the wall of the casing as best shown in Figs. 1 and3. i v

Theslots I8 and 20 in leg 22 aredi sposed at an angle to a vertical line bisecting" screws IB' and Fig. 4 whereby sufficient clearance is provided for permitting thehook to be freed from screw eye The shield I5 could be utilized so as to be moved up and down at will, but to provide a means for securing the shield in its hook locking position is one of the essential attributes of this invention. The locking of shield I5 is accomplished by providing a latch 23 swingable on screw H as a pivot. When shield i5 is down as in Figs. 1 and 2 the latch 23 may be swung upwardly over the edge 24 of the shield by taking hold of theprojecting car 25 provided for that purpose. By swinging latch 23 down into the position shown in Fig. 4, the shield can be freely moved to either holding or to the disengaged-- be construed to being limited to the partIcular position.

For all practical purposes, the screws I6 and 11 can be'adjusted to establish enough friction between the parts such as shield l5,,1atch 23 and the heads of the screws wherebythe shield will stay in its raised position as in Fig. 4 without being so held manually. Also, latch 23 will be frictionally held in the position indicated in'Figs;

1, 2and 3 by the friction of the shield I5 on one side, and the wall of the door casing M on the other side. If such latch 23 should become dislodged forsome unexplained reason, it is'very unlikely that shield l5 would ever be displaced vertically a suflicient' amount during normal use to all w hook ID to become accidentally unhooked from its receiving eye [3.

In the modification illustrated in Figs. 5 and 6, the construction isvery much'thesame as in the' first described form of hook locking mechanism. The difference is exemplified by having the shield and latch provided with cooperating means "for causing raising of the shield during the unlatch-' slot 20.

By manipulating the latch 3| through catching hold 'of the ear 33 thereof and moving same to position the latch as in Fig. 6, the shield is automatically raised clear of the hookin the same fashion as heretofore by one operation. The limits of movement of the latch 3! are determined by a lug: 34 when the latch 'is in locked position, while the scr'ews'lfi and I1 in their respective slots will stopfthe shield and prevent further movement of latch 3-I beyond the'position shown in Fig. 6 inasmuch'as the pin 30 will then also be stopped by the shield l5.

Inthe latter'construction, the latch 3| is also shaped'in the manner of a hook having an 'arcuate notch 35 for the purpose of engaging the shank of screw I6. This permits the center of gravity ofthe, latch to be disposed in a location substantially at the screen door side of the screws l6 and I! to aid in holding the latch in shield locking relationship. The-latch 23 may'also be made in a like manner so that it will not be solely dependent-uponfriction alone to hold the same in its Fig. 2'position. In the form in'Figs. 5 and 6, the weight of the shield on pin 30 will also hold the latch against the shank of screw best illustrated in Fig. 5. I

In Fig, '7, one form of device is shown in position to hold a window 36 in locked relation with edge of the pin slot 32 in safety respect .to its sill 31. Other applications of the invention have not been illustrated as they are merely variations of the embodiments shown and tions. Obviously the parts are interchangeable from the positions portrayed in the drawing if conditions require the same to be so used or as a matter of choice.

It is to be understood that certain changes are possible in the device of the pres'entinvention and that the same is not to be limited to the exact form, construction, arrangement or combination of parts disclosed or described, nor shall the same uses herein set forth.

I claim:

' '1. A safety hook locking mechanism for use fwith a hook and eye, comprising a guard shield, ..vertically spaced supporting members for positioning said shield adjacent said hook, said shield having slots therein to permit limited movement of said shield relative to said supporting members, whereby'said shield may be moved into a position to prevent release of said hook from the hook eye, said shield slots being angularly positioned with respect to a line bisecting said spaced supporting: members to permit said shieldto be shifted diagonally with respect to said hook to provide clearance for the latterto unhook the same from the hook eye, and pivotallysupported releasable latch means. to optionally hold said shield in its hook guarding position, said latch means upon release allowing said diagonal shifting ofsaidshield to move the same out of'the path of the hook.

2. A mechanism for preventing accidental release of a hook from its hook eye, comprising a' guard shield supported for movement into and out of the path of motion of the swinga'bleend of said hook, said shield having a slotted portion and a hook holding portion disposed at an angle to said slotted portion,fastening means for said shield coacting with the slots in the slottedyportion of said shield to permit limited-movement of thelatter, theshape of said slots in the slotted portion being such as to-allow said shield to move generallyvertically with respect tosaid hook and also in a direction laterally away therefrom,

whereby said hook holding portion is moved vertically and laterally out of the normal path of said hook to permit release thereof from its hook eye,

and latch means to lock said shield against movement while said hook holding portion is in guard position'to preventaccidental release of the hook from the hook'eye r I g normal swinging path of said hook, lock means to'hold said shield in the path of said swingable hook to prevent removal of the latter from the hooking eye, and cooperative means carried by said lock means and shield respectively to cause said shield to move out of the hook path simul i taneously with the release of said shield locking

Images