US1147921A - Door check and lock. - Google Patents

Description

c. E. BERRY.

DOOR CHECK AND LOCK.

APPLICATION FILED APR. 5. 1915.

1,147,921 Patented July 27, 1915.

Witnesses Inventor Attorneys CHARLES EQIBERRY, 0F SOMERVILLE, M'ASSAGHUSETTS.

DOOR CHECK AND CLOCK.

Specification of Letters Patent.

Patented July 2'7, 1915.

Application filed April 5, 1915. Serial No. 19,243.

To all whom it may concern j Be it known that 1, CHARLES E. BERRY, a citizen of the United States, residing at Somerville, in the county of Middlesex and State of Massachusetts, have invented a new and useful Door Check and Look, of which the following is a specification.

This invention relates to a combined door check and lock, the same being especially useful in connection with screen doors although the same can be used equally as Well in connection with other forms of doors, with hinged windows, and the like.

One of the objects of the invention is to provide a simple form of check and lock whichcan beattached readily to a. door casing,'which occupies but little space, and the parts of which are constantly exposed where they can be easily reached for the purpose of repairing them.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafter described and' claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, canbe made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the inventionhas been shown.

In said drawings :.Figure 1 is an elevation of the combined check and lock, the parts being shown in their normal positions, the keeper on the door being illustrated as entering into engagement with the latch member. Fig. 2 is a view similar to Fig. 1 and showing the relative positions assumed by the parts immediately prior to the door reaching its closed position. Fig. 3 is a similar view showing the positions of the parts when the door is locked in closed position.

Referring to the figures by characters of reference 1 designates a base plate adapted to be secured to the inner side of the door casing C. in any suitable manner, as by means of screws 2. This plate is provided, near its upper end, with a slot 3 which, in the ar rangement illustrated, is substantially horizontal. Astop lug 4 is formed upon the upper portion of the plate adjacent the slot and another lug or projection 5 is formed adjacent the back edge of the plate. Mounted to slide in the slot 3 is a. stud 6 extending laterally from the intermediate portion of a latch 7 which, as shown in the drawings, has a head or enlargement 8 at one end, said enlargement being made up of cam-shaped tongue 9 arranged opposite to another tongue 10,'the two tongues being separated by a slot 11. The lower wall of the upper tongue 10 is cut away to form a recess l2the upper wall of which is normally inclined upwardly slightly toward the end of tongue 10, the open end. of the slot 11 being in substantially the same horizontal plane as the rear end of recess 12 as shown in Fig. 1. A knob 13 is arranged on one of the tongues of the latch and is for the purpose hereinafter pointed out. A projection 14 extends laterally from the rear portion of the latch 7 and is slidably engaged by one end of a spring 15, the other end of said spring beingsecured to the projection 5. This spring exerts a constant forward pressure against the projection 1e so as thus to hold the stud 6 normally seated against the front wall of the slot 3 with the tongues 9 and 10 projecting beyond the front face of the casing O. l/Vhen the latch is thus positioned its upper edge bears against the projection 4. I

Pivotally mounted upon the plate 1 back of and below the latch 7 is a locking lever 16 having a long arm 17 extending upwardly and a shorter arm 18 extending downwardly, said long arm being disposed back of the latch 7 so as to be engaged thereby, while the short arm 18 constitutes means for engaging the latch to lock it in holding position, as hereinbefore pointed out.

As before stated the latch 7, when in its normal position, is projected beyond the casing C, as shown in Fig. 1. The door D to be checked and locked-is provided with a bracket 19 having a tongue 20 extending at right angles therefrom and constituting a keeper, this tongue being formed with a slot 21 so proportioned as readily to receive the tongue 9 of the latch. WVhen the door D is swung to closed position, the keeper 20 enters the open end of the slot 11 and strikes againstthe upper wall of the recess 12, thus 7 swinging the rear end of the latch downis pressing against the wall of recess 12 will, with the door, rebound just as the latch 7 is caused to swing about the stud 6 as a pivot. This swinging of the latch causes the rear end of the latch 7 to move downwardly just as the keeper 21 rebounds out of the recess 12, whereupon the stud 6 will move forwardly within the slot 3 while, at the same time, the cam-shaped tongue 9 will swing upwardly into the slot 21 and operate to draw the door tightly against the casing C, as shown in Fig. 3. During the downward movement of the rear portion of the latch 7 it will strike and slip past the short arm 18 of the locking lever 16 and said short arm will assume a position in engagement with the lowered rear end of the latch as shown in Fig. 3, thus locking the latch so that the door will be secured in closed position. Before the door can be opened, it is necessary to press the long arm 17 of lever 16 forwardly to the position shown in Fig. 1 whereupon the door can be pulled open, the act of opening the door being sutficient to reset the latch 7 so that it will assume the position shown in Fig. 1. Should the latch become hung in anyway, it can be easily returned to its normal position by grasping the knob 13. As soon as the latch is shifted out of its normal position by the keeper 20 moving against the inclined upper wall of recess 12, the end of tongue v9 enters the opening 21 in the keeper. Thus when the door rebounds after moving to closed posi-- tion, the keeper will be thrown back out of the recess 12 in the latch and, the spring will thus force the tongue 9 up into the opening 21 and pull the door tightly against the casmg.

hat is claimed is t 1'. A device of the class described including a latch slidably and pivotally mounted and having one end portion formed with opposed tongues separated by a slot, there being a; recess in one wall of the slot, yielding means for holding the latch in set position, and a keeper movable into the slot against the wall of therecess to successively swing and slide the latch out of its normal position and against the action of its yieldable holding means.

2. A device of the class described including a latch slidably and pivotally mounted and having one end portion formed with opposed tongues separated by a slot, there being a recess in one wall of the slot, yielding means for holding the latch in set position, a keeper movable into the slot and against the wall of the recess to successively swing and slide the latch out of its normal position and against the action of its yieldable holding means, one of said tongues constituting a cam for entering the keeper during the swinging movement of thelatch, and. means for automatically locking the latch against return movement when swung outof its normal position.

3. The combinationpwith a latch having opposed tongues at one end separated by, a slot, there being a recess in one wall ofthe slot, of yielding means for holding the latch normally in a predetermined position, a keeper movable into the slot and vagainst the wall of the recess to successively swing and slide the latch out ,ofits normal position and against the action of its yieldable holding means, one of said tongues being adapted; to enter the keeper during the swinging movement of the latch, a lever having an arm projecting into the path of the latch to hold said latch against return movement when swung out of its normal position. I

4-. The combination with aibase plate having a slot, of a latch having a slot extending into one end thereof, formingopposed tongues, one wall of the slot having a recess, a projection upon the latch and constituting a slidable and pivotal connection between the latch and the base plate, said projec-..

tion being movably mounted in the slot, 2. spring; for holding the latch normally in. a predetermined position, a slotted keeper movable into the slot and against the- Wall of the recess to successively swing and slide the latch out of its normalv position and into the slot and against the wall of the re cess to successively swing andslide the latch out of its normal position and against the.

action of its spring, a locking, lever. pivotally mounted on the base plate and having one arm extending into.- the path of the l t during the sliding movement thereof and its as my own, Ihave hereto afiixed my signaother arm projecting into the vpath of the ture in the presence of two Witnesses. latch during the swinging movement thereof, to hold the latch against return move- CHARLES BERRY 5 ment subsequent to being swung out of Witnesses:

normal position. L. G. GREEN,

In testimony that I claim the foregoing GEORGE F. BERRY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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