US1862672A - Doorlock - Google Patents

Description

Patented June i4, 1932 PATENT' OFFC THOMAS FLEMING, OF EAST ST. LOUIS, ILLINOIS DOORLOCK Application led April 6,

My invention relates to improvements in door locks, and is particularly intended for the positive locking of large double swinging doors, such as are commonly used on garages,

Y, barns, etc.

' This invention has among its objects, the production of locks of the kind described, which will be neat and attractive in appearance, simple and sturdy in construction, comm pact, reliable, and eiiicient and satisfactory for use wherever found applicable.

One of the objects of my invention is to provide a lock for such doors, which can be operated from either within or from without ,5, the structure, thereby making the saine more perfectly adapted for use and saving the time that would be otherwise required to first enter the building` to open the doors from within.

Another object of my invention is to provide a locking means for swinging doors, in which the door may be unlocked from within the structure at all times, but which can be unlocked from without the same, only after the 5 latch-operating` means have been unlocked for use, as with a key or the like.

Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art to which n this invention appertains, from the disclosures herein given.

To this end, my invention consists in the novel construction, arrangement and combination of parts herein shown and described,

5;; and uses'mentioned, and more particularly pointed out in the claims.

In the drawing, wherein like reference characters indicate like or corresponding parts throughout the views,

Figure 1 is a fragmentary interior view of a structure, showing my lock in its normal locked position;

Figure 2 is a vertical section, taken substantially along the line 2 2 of Figure 1;

Figure 3 is an enlarged cross-sectional detail, showing the latch rod at its uppermost position;

Figure 4 is a cross-sectional view, taken substantially along the line 4 4 of Fig. 3;

. 0 and 1931. Serial No. 527,986.

Figure 5 is a cross-sectional view, taken substantially along the line 5 5 of Fig. 3.

Referring more particularly to the drawing, wherein I have illustrated apreferred embodiment of my invention, A represents one wall or side of any suitable enclosed structure, such as a garage or the like, the same being provided with a pair of co-operating doors l and 2 of any suitable size, shape or material and adapted to close an opening in said wall of the structure, the lintel of the door being indicated at 3, and especially that part of the door frame extending across the top of the door. 4 indicates the floor of the structure,

the same preferably having a latch rod opening 5 in the same, and adjacent the bottom of the door l when the latter is in its fully closed position.

A bracket 6 is carried by the lintel, this ybracket extending inwardly of the structure,

Said bracket is provided with a the same preferably consisting of a U-shaped seat l0 in vertical registry with the lower ends of the slots, and an extension or projection l1 leads in a direction inwardly of the structure from one leg` of the U-shaped guide. The purpose of these extensions laterally of the U-shaped portions of the guides is to form a scat for a locking bar (to be more clearly hereinafter described) at all points of pivotal movement of the latter.

A vertically extending latch rod l2 is carried by the door l, as by brackets 13 14 spaced at suitable intervals vertically of the door. This latch rod has a laterally offset upper end at an angle as at l5. the front and rear ends of said offset portion forming cam surfaces 1G and 17 respectively. for engagement with said bar. Intermediate said cam portions is a shoulder 21 forming a limit stop for movement of the rod l2, as will be described. The lower end of tbe rod is adapted to seat within the opening 5 when thedoor is in its locked position. An elongated slot 1S is provided through the rod at a point intermediate its length, for the reception of rodopera-ting means, as wili be more clearly hereinafter described.

A bar 19, having sufficient weight to rest within the guides and the extensions thereon, is provided for movement within the bracket, this bar having trunnions -20 adjacent the upper edge for insertion through Vthe slots 8 8. Thus, the bar will have freedom of movement vertically of the slots, to positions above and below the top of the latch rod.

In the latched position of the door, the latch rod wili be in its lowermost position, as shown in Figs. 1 and 2, and the stop shoulder 19 will project labove the bottom edge of the bar, and any pressure inwardly of the door wiil not permit the door to be opened, the latch rod having engagement at both its top and bottom to prevent this movement.

However, if the rod is lifted (to the position shown in Fig. 3) from either within or without the structure, the bar 19 will be unseated and iifted therewith, the lower edge of said bar being supported upon the front cam surface 17 of the latch rod, in which position said bar will tend to slide down said cam surface onto the extension or lip 11 leading from the U-shaped guide. As the door is moved inwardly the bar will be actuated to its innermost position with its lower edge supported on said extension lip of the guide, somewhat as shown in dotted lines in Fig. 3, permitting fuil opening movement of the door inwardly until the latch rod is fully clear of the bar.

IVhen the door is moving in outward position to close, the other cam surface 16 will ride under and engage with the lower edge of the bar 19 causing the latter to pivotally move outwardly and move bodily upwardly in the slots 8-8, until the limit shoulder passes the lower edge of the bar, whereupon the latter will drop by gravity and seat in the U-shaped 1 portion of the guides. In this position, the

U-scat will prevent opening movement of the door on account of abutment against the shoulder 21 of the rod.

An operating lever 22 extends through a vertical opening :23 of the door and through the slot 18 of the rod, the rear end of the lever being prevented against accidental withdrawal by offsets 24. This lever may be operated by a second lever 25 pivoted at one end to the exterior of the door, and engaging against a pin 26 or other extension, so that pivotai movement of the lever 25 will impart a pull to the lever 2Q. Obviously, a full outward pull on the lever 25 will pivot the f lever 2Q about a point intermediate the ends of the iatter and thus cause the rod 12 to be lifted.

The lever Q2 is provided intermediate its ends with a slot 27 for the reception of the bar of a key-controlled lock 28. In order, to

open the door, the lock 28 must first be operated to release from engagement with the lever 22. Then, a forward pull upon the lever Q5 will lift the latch rod to lift the bar and permit the same to move to its inclined position, whereupon the rod may pass inwardly of the bar, the latter being supported on the lips of the guides when the door is opened.

The closing movement of the door is suicient to cause the rod to lift the bar, the same dropping to its seated position after the shoulder of the rod has moved past the bar, and thereby locking the door against accidental opening.

The rod may be operated from within the structure simply by lifting the rod itself, or lifting of the lever 22.

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same without departing from the spirit of my invention; hence I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown and described, or uses mentioned, except as limited by the state of the art to which this invention appertains, or the claims hereto appended.

What I claim as new and desire to secure by Letters Patent is 1. A latch for a hinged door, comprising a bracket mounted above said door and having upwardly extending elongated slots therein and U-shaped guides below said slots; a bar vertically and hingedly movable in said slots and seating on said guides; a vertically movable latch rod carried by said door and having its upper end adapted to actuate said bar pivotally and vertically when the door is swung with the rod lifted; and means for operating said rod from without said door.

2. A latch for a hinged door, comprising a bracket above said door and having upwardly extending slots therein and a bar seat in i alignment with and below said slots, said seats having laterally extending lips to support a bar when the latter is pivotally moved therein; a bar vertically and pivotally movable in said slots and seating in said seats; a vertically movable latch rod carried by said door to lift said bar from said seat and pivot the same onto said lips; and means for operably lifting said rod for moving said door.

3. A latch for a hinged door, comprising a bracket mounted above said door and having upwardly extending elongated slots therein and having guides therebelow; a bar seated in said guides and having extensions adjacent its top through said slots, whereby said bar is vertically and pivotally movable; a vertically movable latch rod carried by said door and having a limit stop shoulder projecting above the bottom edge of said bar when the rod is in latched position; and means for lifting said rod, whereby opening movement of said door will move said lifted latch rod to actuate the bar upwardly and the lower edge of the latter inwardly, and a closing movement of the door will move said lifted latch rod to move the bar upwardly and the lower edge of the latter outwardly to permit the bar to drop and seat in said guides after said shoulder of said rod has passed beneath said bar.

4. A latch for a hinged door, comprising a bracket positioned above said door and having upwardly extending elongated slots therein, and having guides below said slots; a bar supported by said guides at all times of its movement, and having extensions through said slots to permit pivotal movement of the bar as well as vertical movement; a vertically movable latch rod on said door and having an offset upper end, the front and rear of said offset end forming cam surfaces engageable with said bar, and provided with a limit stop shoulder intermediate said front and rear cam surfaces and means for lifting said latch rod, whereby inward opening movement of the door will cause the lifted rod to actuate the bar upwardly and the lower edge inwardly, and an outward closing movement of the door will cause said lifted rod to actuate the bar upwardly and the lower edge outwardly to permit the latter to drop to the lowermost portion of the guides after said shoulder has passed said bar.

In testimony whereof I have affixed my signature.

THOMAS FLEMING.

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