US2583391A

US2583391A - Resilient strike plate

Info

Publication number: US2583391A
Authority: US
Inventors: Bert A Quinn
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-07-17
Filing date: 1947-07-17
Publication date: 1952-01-22
Anticipated expiration: 1969-01-22

Description

Jan. 22, 1952 B. A. QUINN RESILIENT STRIKE PLATE Filed July 1'7, 1947 ($12; @zzztzif QM mam Patented Jan. 22, 1952 I UNITED STATES PATENT OFFICE RESILIENT STRIKE PLATE V Bert AQQuinn, St. Paul, Minn.

Application July-17, 1947, Serial No. 761,587

My invention relates to an improvement in resilient strike plate whereinit is desired to provide a strike plate which will spring inwardly when engaged by a latch to decrease the wear upon the latch.

In recent years the use .of latches having a hingedly supported handle engageablefrom opopposite sides of the door has become increasingly popular. These latches are sometimes providedwith integral latch bolts which engage resiliently over a strike plate in closed position of a door- As a result, when the door swings shut, the handle must pivot to allow the latch bolt to engage behind the keeper. This action places a strain upon the handle supporting mechanism as the door swings shut. Furthermore, as the handle is being. held in the hand and the door is manually closed, the handle twists the hand or moveswithin the hand during the door closing operation.

. It is the object of the present invention to provide a strike plate which is resiliently supported and which is engageable with the latch bolt of a door latch. As a result, the strike plate may fiex inwardly as the door closes, thus reducing the strain upon the latch. ,Furthermore, when the strike plate is used in conjunction with a hingedly supported latch handle, the door may close without pivoting the latch handle.

A feature of the present invention lies in the provision of a strike plate including a shoulder against which the latch bolt may engage and a means for resiliently supporting this shoulder. Thus the shoulder may retract as the latch bolt travels over the same and may spring outwardly after the latch bolt has travelled thereover to hold the latch engaged.

A feature of the present invention lies in the fact that my strike plate may incllde a shoulder formed of a round bar or shaft if desired. This round bar or shaft maybe retracted by the latch bolt with a minimum of friction while, at the same time, may form a firmly supported shoulder against which the latch boltl'may engage when the door is closed.

A feature of the present invention lies in the provision of a resiliently supported strike plate and in the simple manner in which the strike plate is constructed. In the preferred form of my invention the strike plate is mounted in an elongated hollow casing having a notch therethrough through which the latch bolt may pass. A round shaft is urged against the outer closed side of this casing by spring means which may be compressed or flexed when inward pressure is applied to the shaft.

2 Claims; (01. 292 s41.15)

These and other objects and novel features of my invention will be more clearly andfully set forth in the following specification and claims.

In the drawings forming a part of my specification:

Figure 1 is a perspective view of my strike plate in. use with a hingedlysupported door latch.

Figure 2 is an elevation view of the strike plate in readiness for use.

Figure 3 is a vertical section through the strike plate showing the construction thereof.

Figure 4 is an elevation view of the bar or shaft forming the strike plate shoulder or abutment.

Figure 5 is an elevation view of a modified form of strike plate construction.

Figure 6 is a vertical sectional view through the strike plate of Figure 5.

Figure 7 is an elevation view of the strike plate bar or shaft forming the shoulder or abutment of the strike plate.

Figure 8 is a perspective view of the spring used to support the strike plate bar or shoulder.

My resilient strike plate A is adaptable for use with virtually any type of latch or latch bolt. In view of the fact that this resilient strike plate is particularly advantageous when used in conjunction with a latch of the swinging type, the strike plate is shown in Figure l in connection there: with. The manner in which a different type of latch bolt could be used is believed obvious from the following description.

The latch B is diagrammatically illustrated as it would appear mounted upon the door In. The

latch B includes a U-shaped handle II which is pivotally supported upon a frame l2. The frame I 2 is provided with an escutcheon plate [3 secured to one surface of the door by screws M or other suitable means. The pivot connecting the handle H to the frame I 2 is preferably arranged on a vertical axis so that the latch handle swings on an axis parallel to the axes of the hinges supporting the door [0. The door [0 may be opened by a pushing movement against the end l5 of the handle I I shown in full lines in the drawing, or maybe opened by a pulling motion upon the end Iii of the handle ll.

The strike plate A is mounted upon the door frame I! and is engageable with a cam shaped latch bolt !9 mounted on the handle I I. When in the closed position illustrated in Figure 1, the latch l9 firmly engages against the strike plate to hold the door ID in closed position. However, as the door I0 moves toward closed position, the cam shaped latch bolt I9 will act to retract the strike plate shoulder in a manner which will be later described in detail.

3 The strike plate A includes a body portion in the form of a flat plate having an outwardly bulged hollow enclosure 2| thereupon. The hollow enclosure 2| is provided with a notch 22 in the outer extremity thereof through which the latch bolt I9 may extend. The hollow enclosure 2| forms a means of supporting the striker plate shoulder and the resilient supporting means therefor. Screws 23 may extend through suitable apertures 24 in the strike plate for securing the same to the door frame.

As best illustrated in Figure 3 of the drawings, a pair of

tongues

25 and 26 are struck from the ends of the enclosure 2| and extend inwardly into the enclosure at an angle with the base plate 20. These

tongues

25 and 26 are of proper width to extend into the ends of

spiral springs

21 and 29. The

tongues

25 and 26 form an anchor for the ends of the springs and direct the springs toward the outer side 36 of the enclosure 2|.

The strike plate shoulder is preferably in the form of a shaft or rod 3| which may if desired be provided with reduced

diameter ends

32 and 33. These reduced

diameter ends

32 and 33 are ,inserted into the ends of the

springs

27 and 29 respectively. Thus the

springs

27 and 29 urge the shaft or rod 3| against the outer closed side 30 of the enclosure 2|. Obviously, however, inward pressure against the rod 3| may move this rod inwardly to the level of the base plate 20.

'The operation of the resilient strike plate is believed obvious from the foregoing description. If the latch bolt such as [9 moves against the rod 3| in the closing action of the door, this rod is forced inwardlytoward the level of the base plate 20, allowing the latch bolt to move past the strike plate without retracting the latch bolt. As soon as the latch bolt passes the strike plate rod 3|, the springs 2'! and 29 urge this rod outwardly into the position shown in Figure 3, whereupon the rod engages the shoulder end of the latch bolt and holds the door firmly in closed position. Outward pressure against the door can not retract the strike plate shoulder 3|.

In Figures 5 through 8 of the drawings I disclose a modified form of strike plate C. 'In this form of construction the body of the strike plate may be substantially similar to that previously described. The strike plate C includes a base plate 34 having apertures 35 therethrough by means of which the strike plate may be attached to the door frame. The strike plate C is likewise provided with an outwardly bulged enclosure 36 formed by pressing a portion of the plate 34 outwardly. A notch 31 is provided in the enclosure 35 near one'extremity thereof.

AJ-shaped spring 39 is anchored to the base plate 34 near the notched end of the enclosure, or this spring 39 may merely rest against the door frame I! within the enclosure 36. The J- shaped spring 39 includes a long arm 40 which may rest against the outer surface of the door frame. This long arm 40 is connected by the rounded end 4| to a short arm 42. The short 4 arm 42 engages within the notched end 43 of a strike plate shaft or rod 44. The rod 44 is secured to the arm 42 of the spring in any suitable manner. When in place the bar 44 lies in the enclosure 36 inwardly of the notch 31 and extends above and below this notch.

When the door I0 moves toward closed position the cam surface of the latch bolt l9 strikes againstthe rod 44, flexing the arm 42 and allowing the rod 44 to retracttoward the long arm 40 of the spring. After the latch bolt l9 passes the rod 44. the spring 39 assumes its usual position, and moves the rod 44 into the path of the shoulder side of the latch bolt. When in this position the door is prevented from moving outwardly and there is no tendency to retract the bar 44.

In accordance with the patent statutes, I have described the principles of construction and operation of my door latch, and While I have endeavored to set forth the best embodiments thereof, I desire to have it understood that obvious changes may be made within the scope of the following claims without departing from the spirit of my invention.

I claim:

1. A strike plate comprising a hollow channel shaped enclosure having a notch in the base thereof and intermediate the ends thereof, pair of ears struck from opposite ends of said enclosure, a strike plate bar bridging said notch, and spring means supported by said ears and by the ends of said bar to resiliently urge said bar forwardly into latch engaging position against the base of said enclosure.

2. A strike plate including a hollow channel shapedenclosure having a notch in the base thereof intermediate the ends thereof, a pair of ears struck from opposite ends of said enclosure, a strike plate bar bridging said notch and having projections extending from opposite ends thereof, and a pair of coil springs encircling said ears at one end thereof and said projections at the other end thereof, said springs resiliently urging said bar forwardly against the base of said enclosure. BERT A. QUINN.

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

UNITED STATES PATENTS Number Name Date 265,417 Hoover Oct. 3, 1882 521,045 Rohrbach June 5, 1894 1,657,423 Van Duzer Jan. 24, 1928 2,151,154 Roethel Mar. 21, 1939 FOREIGN PATENTS Number Country Date 431,998 France Sept. 25, 1911 561,248 Germany Oct. 12, 1932