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Publication numberUS1517447 A
Publication typeGrant
Publication dateDec 2, 1924
Filing dateFeb 4, 1924
Priority dateFeb 4, 1924
Publication numberUS 1517447 A, US 1517447A, US-A-1517447, US1517447 A, US1517447A
InventorsOtto H Merz
Original AssigneeOtto H Merz
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Locking means
US 1517447 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Dec, 2, 11924. LEMAN o. H. MERZ LOCKING MEANS Filed Feb. 4, 1224 Passati nee. 2, i924.



Application filed February 4, 1924. Serial No. 690,411.

To all whom t may concern: Be it known that LOrio H. MERZ, a citizen of the United States, and a resident of Fond du Lac, in the county of Fond du Lac and State of Wisconsin, have invented certain new and useful Improvements in Locking Means, of whichthe following is a specification.

My invention relates to improved locking means which is particularly adaptable for use in such structures as combination storm and screen doors for detachably looking either the glazed or screened closures in the door frame or casing. rlhe object is to provide a simple, inexpensive locking means which will securely lock the respective closures in the door frame.

On the accompanying drawing, I have clearly represented my improved construction and arrangement.

On the drawing, "Fig 1 is an elevational view of the corner of a door frame and closure insert secured therein by means of my improved locking means. v

` Fig. 2 is a similar view of a section of the door frame showing a locking means in unlocking position, and

F ig. 3 is a sectional view on plane 3 3, Fig. 1.

Referring to the drawing 10 represents the door frame surrounding the rectangular opening 11 for either a glazed or screened closure frame 12. The door frame has the weather ledge 13 along one edge surrounding the opening 11, while the closure frame 12 has the ledge 14 along the opposite edge, the

frame 12 engaging against the ledge 13 and the ledge 14 engaging againstthe frame 10 when the closure is inserted in the opening 11 to thus form a weather tight fit. The closure frame shown supports the glass 15, it being understood that instead of glass it could support a screen.

The fitting for locking the closure frame within the door frame opening comprises a frame 16 which has the rectangular guide groove 17 therein. This frame may be stamped integral from suitable sheet metal and is secured to the door frame 10 by being inserted in the depression or pocket 18 so that the flange sections 19 on the frame 18 may engage against the face of the door frame, the locking frame being then secured as by means of nails or screws 20. Slidable in the groove 17 is locking plate or latch 21 which is rectangular and has at its outer end the extension `22 forming an abutment by means of which the plate can be readily shifted into locking or unlocking position. The plate has the longitudinally extending slot 23 through which engages a screw 24 which passes through a hole 25 in the bottom of the frame 16 and threads into the door frame 10, a washer 26 being preferably inserted between the screw head and top of the plate. This lscrew and slot connection limits the sliding movement of the plate.

It is understood that any desired number of locking fittings may be provided. The 'locking plates when shifted inwardly have their inner ends projecting beyond the inner edge of the door frame, and in the closure frame 12 adjacent each plate fitting there is a recess 27 for receiving the projected plate. As indicated at 28 each plate is beveled at its lower inner edge so that whenthe plate is projected into locking position it will have wedging engagement with the adjacent wall 29 of the recess 27 and thus force the closure frame 12 intimately into position against the ledges 13 and with its ledges 14 against the door frame 10, as clearly sho'wn in Fig. 3. B means of the screw 24 the wedging power o the plate against the closure frame can be readily adjusted. y

I preferably apply the locking ttings to the door frame in inclined position so that the weight of the locking plates will hold them in locking position should they inadverently become loose. To insure uniformity of application of the fittings in such inclined position I therefore form the inner edge of the plate supporting frame 16-on the bias so that when the bias edge is applied parallel with the inner edge of the door frame the littings will all be in corresponding angular position.

I thus provide a simple I'inexpensive and eflicient fitting which can be quickly applied to the door frame and which can be readily manipulated to lock or release the closure frame. The locking plate supporting frame can be inexpensively made integral of Sheet metal and the locking plate can be formed integral from llat bar material or can be in the form of a casting. The angular arrangement of the fittings on the door frame prevent any accidental opening of the latchv plates.

I do not however deslre to be limited to the exact construction and arrangement shown sol as changes can be made which would still come within the scope of the invention.

I claim as follows:

The combination with a wall having an opening, and a closure frame seating in said opening and having a recess in its side edge, of a locking device comprising a supporting frame, a locking bar, and a screw, said supporting frame being of U-shape cross-section to form a longitudinally extending guide groove for said bar, said wall having a depression for receiving said supporting frame and to bring said bar into alignment with said recess, said bar having a longitudinal slot and said screw extending through said slot and the bottom of said supporting frame and threading into said wall to hold said frame in said depression and to limit the movement of said bar, the end of said supporting frame being 0n the bias and said wall depression being inclined toward said recess to receive said frame with its bias edge parallel with the side edge of said closure frame, the inclination of said depression and frame causing said bar to tend to keep itself in locking position with its end in said recess.

In witness whereof, I hereunto subscribe my name this 25th day of January A. D., 1924.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3279738 *Mar 18, 1963Oct 18, 1966Meyers Walter AConcrete forming system
US3581533 *Mar 5, 1969Jun 1, 1971Emhart CorpWindow lock
US4161333 *Jan 27, 1978Jul 17, 1979Milton GuttmanProtective means against unauthorized entry for a doorway
US4226452 *Feb 1, 1979Oct 7, 1980Port-A-Crib, Inc.Latch
US5076621 *Jan 2, 1991Dec 31, 1991Colin TaylorCorral or stall latch
US5253440 *Sep 14, 1992Oct 19, 1993Thomas ChangStructure of a picture frame
US8695939 *Dec 27, 2010Apr 15, 2014Au Optronics CorporationStand structure and display device
US20050155301 *Jan 16, 2004Jul 21, 2005Hapka Jerome A.Impact resistant window assembly
US20120104194 *May 3, 2012Au Optronics CorporationStand structure and display device
US20130154457 *Sep 5, 2012Jun 20, 2013Wei-Chih KuoHard disk drive filler
US20150048628 *Oct 28, 2014Feb 19, 2015Anlin IndustriesLow Profile Latch and Closing Panel for Pet Door
WO1994007230A1 *Jan 22, 1993Mar 31, 1994Kit, Franklin, T.Structure of a picture frame
U.S. Classification292/145
International ClassificationE05D15/00
Cooperative ClassificationE05D2700/10, E05D15/00
European ClassificationE05D15/00