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Publication numberUS2547108 A
Publication typeGrant
Publication dateApr 3, 1951
Filing dateMay 22, 1947
Priority dateMay 22, 1947
Publication numberUS 2547108 A, US 2547108A, US-A-2547108, US2547108 A, US2547108A
InventorsAnderson Carl E
Original AssigneeAnderson Carl E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Door latch
US 2547108 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

April 3, 1951 c. E. ANDERSON 2,547,108

DOOR LATCH Filed May 22, 1947 Fig.4 2/ Fig. 2

v I 3 25 I @W I uventor Carl E. Anderson Patented Apr. 3, 1951 UNITED STATES PATENT OFFICE 7 v noon LATCH Y Carl E. Anderson, Barberton, Ohio Application May 22, 1947, Serial N0..749,793 I v The present invention relates to new and useful improvements in door latches and more particularly to means for retracting the latch bolt by a pushing or pulling movement of the opposite door knobs or handles.

More specifically, the invention embodies the provision of a transverse bar slidably mounted in a door and provided with operating knobs at the opposite sides of the door together with a spring projected sliding latch bolt operated by a cammingaction between the bar and the: bolt to retract the bolt.

A further object of the invention is to provide means for locking the bolt against retracting movement.

Another object of the invention is to provide a latch bolt having a tapered outer end adapted to engage the complementary shaped recess in a door jamb to effect a tight fitting and antirattling engagement of the bolt with the jamb.

A still further object is to provide a device of" this character of simple and practical construction, which is efiicient and reliable in operation, relatively inexpensive to manufacture and install in position on a door and which is otherwise Well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a fragmentary view in elevation of the edge of a door showing the latch bolt mounted in positiontherein.

Figure 2 is an enlarged fragmentary sectional view taken on a line 22 of Figure 1.

Figure 3 is a sectional view taken on a line 33 of Figure 2, and

Figure 4 is a view in elevation of the keeper for the latch bolt.

Referring now to the drawing in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention, the numeral 5 designates a door having a cylindrical recess o'r chamber 6 in its free edge and in the outer end of which a bushing I is secured by means of prongs 8 formed on a flange 9 on the outer end of the bushing, the prongs penetrating the outer edge of the door. The door 5 is also formed with a transverse opening l -U in which a rod ll is slidably mounted with the" ends of the rod projecting outwardly from opposite sides of the door. Knobs or handles l2 are adjustably secured atthe ends of the rod by means of shouldered set screws l3 selectively received in longitudinally spaced openings M in the rod adjacent the end-portions thereof.

The central portion of the rod I! is formed with a laterally projecting cam I5 working in a transverse opening [6 at the inner end of a sliding latch bolt I! mounted in the bushing I.

The rear end of the bolt IT in the region of the opening [6 is of hoilow construction and is provided with a roller I 8 journalled in the hollow rear end of the bolt behind the rod l I and against which the cam edge I9 of the cam I5 works during the sliding movement of the rod in one direction. A coil spring 20 is positioned at the inner end of the chamber 6 behind the bolt [1 to project the front end of the bolt outwardly of the edge of the door, said front end of the bolt being tapered as shown at 2| for entering a complementary shaped recess 22 in the edge of a door jamb 23. A keeper plate 24 is secured'to the door jamb 23 and is formed with an opening 25 in alignment with the recess 22 to guide the tapered end 2| of the bolt into the recess of the keeper.

The bolt I1 is formed with an annular groove 26 for receiving the inner end of a locking pin 27, the pin being slidably mounted in an opening 28 in one side of the door and is movable into and out of locking position in the groove 26 by means of a knob 29 at the outer endof the pin.

The pin 21 is formed with a longitudinally extending groove 30 in which a coil spring 3! is frictionally held by a shouldered set screw 32 to secure the locking pin in either an inward or outward position.

The screw 32 is carried by a lug 33 at one edge of a dome-shaped plate 34 secured to the side of the door by prongs 35, the plate having a central opening 36 through which the rod II is slidable. A similar plate 31 is secured to the opposite side of the door.

In the operation of the device, the bolt I1 is projected outwardly at the edge of the door by the spring 20 to engage the keeper of the door jamb 23. The outward movement of the bolt also causes the roller [8 to ride against the cam I 9 to move the rod H toward the left as shown in Figure 2'. The bolt I! may be retracted either by a pulling force exerted on the knob I2 at the right-hand end of the rod or by a pushing force exerted on the knob at the opposite end of the rod. The bolt l1 may be secured against retracted movement by pushing the locking pin 2'! inwardly.

I claim:

1. In combination with a sliding door bolt, a handle for operating said bolt, an escutcheon plate for the handle, a lug on one edge of the escutcheon plate, a locking pin slidable in the lug for entering a recess in the bolt to hold the latter in locked position, said pin having a longitudinal groove, and friction means carried by the lug and seated in the groove to hold the pin in either a looking or releasing position.

2. In combination with a sliding door bolt, a handle for operating said bolt, an escutcheon plate for the handle, a lug on one edge of the escutcheon plate, a locking pin slidable in the lug for entering a recess in the bolt to hold the latter in locked position, said pin having a longitudinal groove, a coil spring carried by the lug and frictionally seated in the groove to hold the pin in either a looking or releasing position, and a set screw threaded in the lug and engagin the spring to adjust the tension thereof.

' CARL E. ANDERSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

Patent Citations
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2673109 *Apr 24, 1952Mar 23, 1954Frost Horace EScreen door latch
US2721092 *Apr 17, 1953Oct 18, 1955Simmons Charles JDoor lock
US2726108 *Jun 30, 1951Dec 6, 1955Wright Products IncDoor latch
US2939308 *Feb 4, 1957Jun 7, 1960Trammell Jr Earl MSafety door locks
US3141691 *Jan 22, 1962Jul 21, 1964George S GunardAutomatic window stop
US3187868 *May 31, 1961Jun 8, 1965Sundstrand CorpPower transmission mechanism
US3314704 *Jun 17, 1964Apr 18, 1967Jensen John LDoor latch assembly
US3330341 *Dec 6, 1965Jul 11, 1967Rockwell Mfg CoRemotely positionable and removable wellhead connection and sealing apparatus
US3471188 *Nov 25, 1966Oct 7, 1969Gen Alarm CorpSecurity system
US5157953 *Sep 24, 1990Oct 27, 1992Hung Sheng HuPush and pull type cylinder lock
US5286074 *Feb 23, 1993Feb 15, 1994Lin Jui ChangHandle lock
US5941578 *Aug 7, 1997Aug 24, 1999Shamblin; RoscoImpact resistant safety door latch mechanism
US5964487 *Sep 15, 1997Oct 12, 1999Shamblin; RoscoImpact resistant security door auxiliary latch mechanism
US7293934 *Mar 15, 2005Nov 13, 2007Ho Cheng Garden Tools Co., Ltd.Telescopically adjustable pipe
US8336930 *Jan 4, 2007Dec 25, 2012Vision Industries Group, Inc.Window sash latch
US8511724Oct 6, 2009Aug 20, 2013Vision Industries Group, Inc.Window sash latch
US8757675 *Mar 31, 2009Jun 24, 2014The Young Engineers, Inc.Two assembly parts latch system
US8770634Aug 14, 2013Jul 8, 2014The Young Engineers, Inc.Two assembly parts latch system
US8789858Dec 14, 2011Jul 29, 2014The Young Engineers, Inc.Two assembly parts latch system
US9145719 *Sep 5, 2012Sep 29, 2015Milocon Inc.Apparatus for a door latch
US9394732 *Dec 1, 2015Jul 19, 2016Abdulaziz K H. M. A. A. AhmadHands-free door latch mechanism
US9556644 *Sep 26, 2014Jan 31, 2017Byungman YOONApparatus for opening and closing entrance
US9556645 *Sep 26, 2014Jan 31, 2017Byungman YOONApparatus for opening and closing front entrance
US20060208497 *Dec 5, 2005Sep 21, 2006James DelGrossoWorry-Free Lock Device
US20070158953 *Jan 4, 2007Jul 12, 2007Luke LiangWindow sash latch
US20100244465 *Mar 31, 2009Sep 30, 2010De Mola Manuel LoretTwo assembly parts latch system
US20140361552 *Sep 5, 2012Dec 11, 2014Wayne HartfordApparatus for a Door Latch
US20150007620 *Sep 26, 2014Jan 8, 2015Byungman YOONApparatus for opening and closing entrance
US20150013401 *Sep 26, 2014Jan 15, 2015Byungman YOONApparatus for opening and closing front entrance
DE1017943B *Mar 23, 1953Oct 17, 1957Bronswerk NvVorrichtung zum Bewegen eines schwenkbaren Fluegels mit Hilfe eines Druckmittels
DE1018750B *Mar 23, 1953Oct 31, 1957Bronswerk NvVorrichtung zum Schwenken eines Fluegels von Tueren od. dgl.
DE1061652B *Dec 13, 1954Jul 16, 1959Jacobson Van Den Berg & CoRiegelfallenschloss
DE1080895B *Apr 22, 1955Apr 28, 1960Jacobson Van Den Berg & CoRiegelfallenschloss
Classifications
U.S. Classification292/170, 292/150, 292/147
International ClassificationE05C1/14, E05C1/00
Cooperative ClassificationE05C1/14
European ClassificationE05C1/14