US2216668A - Closure operator and lock - Google Patents

Description

Oct. 1, 1940. w. D. JOHNSTON CLOSURE OPERATOR ND LOCK Filed Jan. 6, 1940 Fig tea Fig.5.

Hill/1am D. Jh-ns-f-on Patented Oct. 1, 1940 1 UNITED STATES rArEnr- JVOFFICE CLOSURE OPERATOR ANDsLOCK. William D. Johnston, Waco, Tex., as'signor to Wm} Cameron & Company, Inc; Application January 6, 1940, Serial No.- 312338 10 Claims. (Cl. 292 -1 99) invention relates to closure operators and locks, and more particularly to devices of this kind which are especially adapted for use in connection with casement window sash.

5 Many casement window sash structures are provided with operating devices or mechanism usually mounted atthe bottom of thewindow frame and having an arm or other element conc nected to the bottom of the hinged sash for 0 swinging the latter to open or closed position. The more efficient of such operating devices now available arescapable of closingithe bottom of the sash tightly and holding it closed, but they s. do not exert a directly applied closing or holding effort on the top of the sash. Since the sash is somewhat yieldable, such devices cannot be depended upon to close the sash top tightly, and this is particularly so when the sash is warped or sprung. I

The present invention relates particularly to a supplemental closure operator and lockadapted to close completely and to lock or hold tightly the 'portion of a sash which is otherwise not completely closed or held tightly. An object of the invention is to provide .an improved closure operator and lock of the character stated which is simple in construction and positive in its action, and which occupies a small space, as coms paredto the space occupied by devices hereto-- fore provided for the same or analogous purposes. v- I i I An illustrative embodiment of the invention is vshown in the accompanying. drawing, in which: 7 a 1 Figure lis an elevation showing a casement window structure equipped with a closer and lock embodying my invention as viewed from the inside of the window;

Figure 2 isa fragmentary vertical sectional 40 view taken on the line 22 of Figure 1; showing ascreen in addition to the parts shown in Figure 1, and drawn on an enlarged scale. In this View the parts are shown in the positions oocupied when the sash is closed at the bottom 5 but not tightly closed at the top, the parts thus being shown'in the positions occupied prior to the operation of the closing and locking device embodying the invention.

Figure 3 is a view similar to'Figure' 2 but showing the parts in the positions occupied after the operation of the closing and locking device, and with the topof the sash thus closed tightly;

Figure 4 is a sectional view of a part of them; closing and locking deviceshowing a worm andwo-rm ;gear 'nelevation; and drawn-on' an en-' largedscale; Y a 1 v I Figure 5' is a section on-the line 5-'-5-od Figure 4; and

I y 1 Figure :6 ri-Sw a detailedv sectional View showing a irame-mountedhook and supporting bracket 1 The-drawing shows a fixed frame A and movable sash B hin ed to the frame at'I --l, and a clo-senand loclr constructed in; accordance with the invention generallydesignated 0. a

The framejAis constructed in a conventional manner to include side members 2 and 3, a top 4, and a bottom 5. Strips 2', 3', 4', and 5 secured respectively to themembers 2, 3, 4, and-'5 form a marginal abutment against whichv the sash maybe closed in a conventional manners The movable sash B also is of conventional form, and includesside members 6 and 1, a top member 8, and ;a bottom member 9.

, The frame and sash structure isprovided with any suitable} s operating mechanism located. at the bottomof';the ,frame adjacent the hinged side of thesash; Such mechanism is shown as including asr-otatable memberf having a squared socket recess H) for receiving an operating crankor like Y member. As-

previously explained, such sash-operating, members cannot be depended upon; to 'eifect a tight closing of. the sash at the top, and particularly attheltopcorner diagonally oppositethe corner at which the bottom operating mechanism located.v vIn accordance with the present ,invention,-;the improved supplemental. closer and lock C is located-adjacent the cornerof the: sash diagonally opposite the corner at which the usualsash-operating mechanism I0 is located. \Theclo'se'r and lock 0 comprises a bracket ll secured to the side member 6 of the sash, and

a hook I?" pivoted as at. l3 on the bracket to swingabout an' axis perpendicular to the plane of the frame member 2'. V'Ihe hook is of such lengthvas to extend fromfthe sash within the frame opening. A heel H on the hook is engageable withfthe bracket H for limiting downward swinging movement of the hook to the position shown in Figure 2;

Mount'ed'on the frame part 6 is a gear hous ing' l5 on which is mounted a worm' gear [5 rotatable about an axle pin [1- which is parallel to the hook axis l3 when the sash is in. closed position. Integ'rally formed with the gear; I6 is a hook [8 which is adapted to move into interlocking' engagement with the sash-mounted hook l2'w'hen the gearIB is rotated in a counter-clockwise direction from the position shown in Figure 2, continued rotation of the gear applying force through the hooks I8 and I2 and the bracket ll directly to the sash and moving it forcibly and positively to completely closed and locked position.

For operating the Worm gear IS, a worm I9 in mesh with the gear is journaled as at 2020 in the housing I5. The axis of the worm I9 extends substantially parallel to the plane of the frame member 2' on which the housing I5 is mounted, and is formed at its inner ends with a squared recess 2| adapted to receive the stem or shank of an operating crank indicated in dotted lines at 22 in Figure 3.

Preferably, the gear I6 is formed at a point adjacent the hook I8 with a cam 23 adapted to engage the sash member 6 when the gear I6 is rotated in a clockwise direction from the position shown in Figure 3 so as to positively move the sash outwardly to release it.

The closer and lock C is so constructed that it may be adapted readily for use in connection with either right 'or left side hinged sash. The drawing shows it applied to a casement window with the sash hinged at the right as viewed from the inside. For use with a sash hinged at the left the pin I1 is removed from the housing I5, the'gear I6with the hook I8 thereon is turned over, and the pin I! put back in place. The worm [9, being provided with squared recesses 2| at both ends, can be operated from inside the window regardless of whether the closer and lock C is mounted at the right or left of the Window. In operation, when the sash is open and it is desired to close it, the bottom operating mechanism indicated at In is operated in the usual manner to close the sash as fully as is possible with the aid of the mechanism ID. This normally will bring the bottom of the sash to snugly closed position,but, because of the yielding of the sash or because of a permanent warp, the topof the sash still may be not completely closed. Such a position is shown in Figure 2. In order to .close the top of the sash completely, the crank 22 is inserted in the squared socket of the worm l9, and the latteris rotated so as to revolve the worm gear I6 in a counter clockwise direction as viewed in Figure 2. Engagement of the gear hook I8 with the. sash-mounted hook I2 andcontinued rotation of the gear will pull the sash to the tightly closed position shown in Figure 3. When it is desired to open the sash, the'worm I9 and gear I6 are rotated in the opposite direction, causing the cam 23 to press outwardly on the upper part of the sash, thus releasing it if it has any tendency to stick. The

opening movement of the gear I6 will be suffiient to position the gear hook I8 out of the path of thesash-mounted hook I2, after which the'sash may be moved to its fully open position by operating the mechanism In.

[The provision of the hook I8 on a rotatable gear I6 provides for a substantial closure effecting movement without requiring long, space-consuming elements. The pivoting of the hook I2 on the sash enables the hook to have definite locking engagement with the gear hook I8 while the hook I8.moves upwardly and downwardly incidentally to its arcuate travel. Proper cooperation of the two hooks is assured by provision of the heel I4 which maintains the hook I2 in the path of'the gear hook I8 but spaced above and out of engagement with the gear I6. .It-will benobserved that the closer and lock disclosed herein can be driven positively in two directions so as to effect either the complete closing of the sash or an initial release thereof to overcome sticking, and the worm and gear driving connections are such as to be self-locking at any position of the gear I6. The parts are so arranged that the mechanism can be mounted within a small space without interfering with the mounting of an inside screen such as is designated at D in Figures 2 and 3, it being necessary only to provide a small hole in the screen frame through which the operating crank'22 may be inserted. As will be clear from a consideration of Figure 4, the teeth on the worm wheel I6 extend throughout only a portion of its periphery. Consequently, the Worm wheel is limited in its rotary movement by engagement of the worm threads with the un-toothed portion of the worm wheel periphery. This prevents over travel of the worm wheel I6 sufficient to pull the hook I2 from its mooring.

The structure disclosed for the purposes of illustration embodies the invention in a preferred form, but it will be understood that various changes may be made without departing from the invention as defined in the claims.

I claim:

1. In a closure operator and lock particularly for casement windows and like structures including a frame and closure member movably mounted on the frame, a hook mounted on the closure member; a gear journaled on said frame and being formed with a gear hook rotatable with said gear and engageable with said closuremounted hook upon rotation of the gear and while said gear hook has a movement component in the direction of closing movement of the closure for drawing said closure to closed and locked position; and means for rotating said gear.

2. Ina closure operator and lock particularly for casement windows and like structures including a frame and a closure member hinged to the frame at one side thereof, a hook mounted on the closure member; a gear housing mounted on said frame; a gear journaled on said housing and being formed with a gear hook rotatable with said gear and engageable with said closuremounted hook upon rotation of the gear and while said gear hook has a movement component in the direction of closing movement of the closure for drawing said closure to closed position; and means for rotating said gear, said gear being adapted to be turned over with respect to said housing to reverse the direction of extent of the gear hook and to thus render the closure operator adapted for selective right or left mounting.

3. In a closure operator and lock particularly for casement windows and like structures including a frame and closure member movably mounted on the frame, a hook mounted on the closure member; a worm gear journaled on said frame and being formed with a gear hook rotatable with said gear and engageable with said closure-mounted hook upon rotation of the gear and while said gear hook has a movement .component in the direction of closing movement of the closure for drawing said closure to closed position; and a worm meshing with said gear for rotating the latter, said worm and gear providing a two-way drive which is self-locking at any position of said gear hook.

4. In a closure operator and lock particularly for casement windows and like structures including a frame and closure member movably mounted on the frame, a hook mounted on the closure member; a worm gear journaled on said frame and being formed with a gear hook rotatable with said gear and engageable with said closure-mounted hook upon rotation of the gear and while said gear hook has a movement component in the direction of closing movement of the closure for drawing said closure to closed position; and a worm meshing with said gear for rotating the latter,said worm gear being provided with teeth only partially along its periphery and the untoothed portion of the gear periphery at the end of the toothed section of the gear which advances toward said worm during closing-movement-effecting rotation of the gear being engageable with the worm to limit thereby the rotary movement of said gear and prevent over travel thereof sufficient to pull said closuremounted hook from its mooring on the closure.

5. In a closure operator and lock particularly for casement windows and like structures including a frame and closure member movably mounted on the frame, a hook pivotally mounted on the closure member; a gear journaled on said frame for rotating about an axis parallel to the pivotal axis of said hook and being formed with a gear hook rotatable with said gear and engageable with said closure-mounted hook upon rotation of the gear and while said gear hook has a movement component in the direction of closingmovement of the closure for drawing said closure to closed position; and means for rotating said gear.

6. In a closure operator and lock particularly for casement windows and like structures including a frame and closure member movably mounted on the frame, a hook pivotally mounted on the closure member; a worm gear journaled on said frame for rotation about an axis parallel to the pivotal axis of said hook and being formed with a gear hook rotatable with said gear and engageable with said closure-mounted hook upon rotation of the gear and while said gear hook has a movement component in the direction of closing movement of the closure for drawing said closure to closed position; and a worm meshing with said gear for rotating the latter, said worm and gear providing a two-way drive which is selflocking at any position of said gear hook.

7. In a closure operator and lock particularly for casement windows and like structures including a frame and closure member movably mounted on the frame, a hook pivotally mounted on the closure member; and a gear journaled on said frame for rotation about an axis parallel to the pivotal axis of the hook and being formed with a gear hook rotatable with said gear and engageable with said closure-mounted hook upon rotation of the gear and while said gear hook has a movement component in the direction of closing movement of the closure for drawing said closure to closed position, said closure-mounted hook being formed with a heel adapted to limit movement of the engaging portion of the closuremounted hook to a position in the path of said gear hook but clear of the remainder of the gear.

8. In a closure operator and lock particularly for casement windows and like structures including a frame and closure member movably mounted on the frame, a hook mounted on the closure member; a gear journaled on said frame and being formed with a hook rotatable with said gear and engageable with said closuremounted hook upon rotation of the gear in one direction for drawing said closure to closed position, said gear also being formed with a cam adjacent said hook and engageable with said closure for releasing it by positively forcing it toward open position when said gear is rotated in the opposite direction; and means for rotating said gear.

9. In a closure operator and lock particularly for casement windows and like structures including a frame and a closure member hinged on the frame, a bracket secured to said closure member adjacent its margin; a hook pivotally mounted on said bracket to move about an axis perpendicular to the plane of the adjacent frame part and extending to within the frame structure when the closure member is in closed position; a gear mounted on said frame part to turn about an axis parallel to said closure-mounted hook axis, said gear having a gear hook integrally formed on its periphery and said gear hook being directly engageable with said closure-mounted hook upon rotation of said gear and while said gear hook has a movement component in the direction of closing movement of the closure for drawing said closure to closed position; and means for rotating said gear.

10. In a closure operator and lock particularly for casement windows and like structures including a frame and a closure member hinged on the frame, a bracket secured to said closure member adjacent its margin; a hook pivotally mounted on said bracket to move about an axis perpendicular to the plane of the adjacent frame part and extending to within the frame structure when the closure member is in closed position; a worm gear mounted on said frame part to turn about an axis parallel to said closure-mounted hook axis, said gear having a gear hook integrally formed on its periphery andsaid gear hook being directly engageable with said closure-mounted hook upon rotation of said gear and while said gear hook has a movement component in the direction of closing movement of the closure for drawing said closure to closed position; and a worm meshing with said worm gear and being rotatable about an axis parallel to the plane of said frame part, said worm being formed to receive an operating stem member coaxial with said worm.

WILLIAM D. JOHNSTON.

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