US 2526979 A
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Description (OCR text may contain errors)
24, 1950 J. E. TOMLINSON AUTOMATIC SCREEN DOOR HOOK Filed June 27, 1947 Patented Oct. 24, 1950 UNITED STATES PATENT OFFICE 2,526,979 AUTOMATIC SCREEN DOOR HOOK John E. Tomlinson, Los Angeles, Calif.
Application June 27, 1947, Serial No. 757,399
1 Claim. 1
The present invention relates to automatic screen door hooks and it consists in the combinations, constructions and arrangements of parts herein described and claimed.
It is an object of the invention to provide an automatic latch for screen doors or the like.
A further object of the invention is the provision of a simple, compact, inexpensive and efficient closure latch.
Another object of the invention is the provision, in a latch, of a simple and effective means for unlatching the same.
Other and further objects of the invention will become apparent from a reading of the follow- 2 25 formed longitudinally therein. The bolts 22 are adapted to engage in the grooves 25. Integrally formed with the dog 24 is an operating button 26.
In operation, it will be apparent that when the door is closed either by hand operation or by the operation of a sprin in the conventional manner, that the hook 16, due to its angular inner face 21, will ride over the detent l8 and fall into position thereover in such manner that the detent [8 will lie within the notch l1, thereby effectively latching the door. When it is desired to unlatch the door, the button 26 is pressed in- Wardly of the door l3 thereby causing the dog 24 nc p a i n ken in conjun ion with h to move against the cammed portion 2| of the drawings, in which: hook I6 and thereby causing the hook l6 to be Figure 1 is an elevational view of an embodiraised at its inner end thereby becoming disenment of the invention, gaged from the detent I8 whereupon the door Figure 2 is a plan view, partly in section, taken may be opened in the conventional manner. along line of gure 1 in the direction of the While but one form of the invention has been arrows, shown and described herein, it will be readily ap- Figure 3 is an elevational sectional view taken parent to those skilled in the art that many along line 3--3 of Figure 2, and minor modifications may be made without de- Figure 4 is an exploded perspective view illusparting from the spirit of the invention or the trating the method of assembly of the invention. scope of the appended claim.
Generally, the invention comprises a latch con- What i claimed is; sistin of a hook pivotally Carried in a frame A device of the character described comprismemb u d in a (1001 the like and p ing a pair of plates mounted at either side of an ed to en a detent Carried y th lamb of a aperture in a door, a pair of bolts interconnecting d rpon the outer side of the door and carthe plates, a hook pivotally mounted in the inner ried by the frame is a slidably mounted detent m t d having a cammed rear a dog hav g an outwardly extending Operating ing a pair of grooves adapted to slidably engage ton and p ed to engage at its inner d a the bolts between the plates. a button formed inca P01431011 0f the hOOk y, When the tegrally with the dog and protruding through the button is pressed, the hook will be raised to disouter plate d adapted when pressed inwardly engage from the detent carried by the jamb. to force the dog into engagement with the rear Ref m p t la ly t the dra end of the hook to thereby lift the outer end of there is shown therein a latch having an inner the hook against t ti of gravity, plate member Ill and an outer plate member ll JOHN E MLINS N, adapted to be mounted at either side of an open- V ing l2 formed in a door I3. The plate H) has REFERENCES CITED integrally formed therein a pair of inwardly The following references are of record in the tending ears l4 which carry an axle l5 therebefile of this patent. tween upon which is pivotally mounted a hook 16 which extends inwardly and is provided with UNITED STATES PATENTS a notch l7 adjacent its inner end and which is Number N Date adapted to engage with a) detent l8zzgflixed to a 4 95 Netschert July 14 1931 jamb [9 as, for example, y a screw The inner end of the hook I6 is provided with FOREIGN PATENTS a downwardly extending cammed end 2|. A pair Number Country Date of bolts 22 are adapted to interconnect the 687,042 Germany Jan. 22, 1940 plates In and II and act as guides for a dog 24 1,399 Great Britain Nov. 25, 1893 having a pair of diametrically opposed grooves