US2464637A

US2464637A - Closure check

Info

Publication number: US2464637A
Application number: US698158A
Authority: US
Inventors: Erd Fred Grant
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-09-20
Filing date: 1946-09-20
Publication date: 1949-03-15
Anticipated expiration: 1966-03-15

Description

March 15,1949. F. GERD 2,464,637

' cLosURE CHECK Filed Sept. 20, 1946 ATTD R N EYB Patented Mar. 15, 1949 UNITEDv STATES TNT FFICE Claims.

My present invention relates generally to miscellaneous hardware in building structures, and more specifically to an improved closure check or rubber closure check of the spring-actuated type, which while especially designed for use with spring-closed screen doors, may with facility be installed for use with other types of closures.

The primary object of the invention is the provision of a door check consisting of an minimum number of parts that may readily be manufactured at low cost of production and assembled with convenience into a device that is simple in construction and automatic in operation for eective use in checking the. closing. movement of the door.

The invention consists in certain novel combinations and arrangements of component parts as will hereinafter be described and specifically set forth in the appended claims.

In the accompanying drawings I have illustrated one complete examplevof the physical embodiment of my invention in which the parts are combined and arranged in accord with one mode I have devised for the practical application of the principles of the invention. It4 will be understood that various changes and alterations are contemplated and may be made in these eX- emplifying drawings and mechanical structures within the scope of my claims without departing from the principles of the invention.

Figure 1 is a horizontal sectionalv View through a hinged screen door and its frame, showing the frame equipped with a door check embodying my invention.

Figurey 2 is a plan view of the door check with its covery plate removed showing the operating parts in projected position; and Figure 3 is a similar view with the resilient checking parts being compressed by the closing movement of the hinged door.

Figure 4 is a fragmentary detail view showing the movement of parts as the check is automatically projected to operative position.

Figure 5 is a detail view showing the position of parts While the door is closed.

Figure 6 is a transverse vertical sectional view at line 6-6 of Fig. 2; and

Figure 7 is a horizontal transverse -sectional view at line 1-1 of Fig. 2.

In the illustration illustrated in Fig. 7 the door check is mounted at a suitable height upon a jamb J of the door frame F, with the leading edge of the device flush with the exterior face or edge of the door frame, for contact of the door D, as it is automatically closed by its spring S.

The operating parts of the door check are mounted in a rectangular housing I having a closure plate 2, and both the plate and housing are provided with registering holes for screws 3 by means of which the device is attached to the door frame'. By utilizing screw holes in both the back wall of the housing and the front plate the device may be attached for use on either the left hand jamb or on the right hand of the frame for use with a spring closed door.

Within the housing is pivotally mounted the checking or cushioning elements, which include a rubber or resilient check 4 that is underhung or suspended aty its upper end on a transverse pivot pin 5 mounted in the housing. This rubber check is fashioned with a front contact lug or bumper which, when the door is opened, projects through a slot l in the leading edge of the housing, and the bumper is held in projected position by means of a spring 8 that isinterposed between the check and thel top wall of the housing. The spring 5S constantly urges the check to projected position as in Fig. 2 while the door is open; it is compressed when the check is pushed inwardly by the closing door; and by its expansion on the overbalanced check in Fig. 5 the spring, together with gravity action of the overbalanced check, project the bumper, as in Fig. 4.

At its lower edge, the integral bumper of the check is fashioned with a rounded convex cam face 9, and' the cam face terminates in a notch or shoulder I'U, While the rear portion of the bottom edge of the check is fashioned with two stepped notches II, I2', forming shoulders for coaction with a detent I3 located below the inner portion of the check 4.

The detent I3, like the check 4, is also composed of rubber or other resilient material that is compressible and expansible, and the horizontally disposed detent is pivoted, overhead, upon a transverse pin I4 mounted in the housing and offset from the vertical plane in which the checkpivot 5 is located.

The detent is provided at' its rear end with a squared edge for contact with the back wall of the housing, and its overbalanced front portion is provided with a notch I5 forming shoulders for alternate or selective coaction with the shoulders or notches I0, II, and I2 of the check 4.

Pivotally mounted below the detent and the bumper is a two-arm bracing lever having a long arm I6 for engagement with the detent, a short arm l1 for co-action with the cam face or edge 9 of the bumper, and a pivot pin I8 mounted in the housing; and a stop pin I9 is xed in the housing and located beneath the long arm I6 to limit downward swing of the long arm I6.

With the operating parts of the device in position of Fig. 2, where the bumper is projected by action of spring 8, and the detent is braced or held up in horizontal position by the brace arm i6, the bumper is in the path of the closing door. As the door contacts with the bumper as in Fig. 3, the alined bumper portion of the check and the detent contacting the back wall of the housing are compressed, as they receive and absorb the pressure of the closing door, to the shape shown in Fig. 3.

With the final closing movement of the door the check and the detent are compressed together and swung on their offset pivots until they snap out of engagement to position of Fig. 5 Where the bumper is entirely withdrawn within the housing, the bottom edge of the check is frictionally engaging the top edge of the detent, and the overbalanced detent is resting on the brace arm i6 which is supported by the stop pin I9.

In this retracted position of the operated parts they are held between the spring pressure at the rear of the check and the weight or load of the closed door at the front of the check; therefore, when the door is again opened to release the bumper, spring S expands to swing the check to projected position, and with this swinging action the cam face 9 rides down on the short arm Il to swing upwardly the long arm I6 of the bracing lever and the lever swings the detent on its pivot into horizontal position for engagement of the shoulders or notches l5 and Il, l2, as in Fig. 2.

By these compressible and expansible movements of the resilient check and detent, together with the co-acting gravity and spring-action on the check, and the lever action on the detent that is actuated by the cam arrangement between the check and lever, the device absorbs the closing movement of the door and cushions it with a noiseless action, and the parts automatically adjust themselves to their diierent positions for subsequent operations.

The minimum number of operating parts provides for simplicity in operation of the door check. and these parts may readily be replaced to compensate for wear without the necessity Ifor employment of skilled labor.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a door checking device, the combination with a housing, a resilient spring-pressed check pivotally suspended therein, and a bumper on the check projecting through a slot in the housing, of a resilient detent pivoted beneath the check and bearing against a wall of the housing, and a releasable pivoted retaining brace mounted in the housing below the check, said brace having means engaging the check and detent respectively.

2. The combination with a housing, a compressible and resilient spring-pressed check pivotally suspended in the housing, and a bumper on the check, of a compressible and resilient overbalanced detent pivoted beneath the check-pivot and axially alined with the bumper and a xed portion of the casing, and a pivoted brace on the housing below the check, said brace having means engaging the check and detent respectively.

3. The combination with an elastic rubber check and a suspending pivot therefor, and a projecting bumper on the check, ofA an elastic rubber detent having a supporting pivot and alined with the bumper, and a pivoted resilient retaining brace von the housing below the check, said brace having means engaging the check and detent respectively.

l. The combination with a housing, an elastic rubber check pivotally suspended therein, an integral bumper on the check, and a spring tending to project the bumper, of an elastic rubber detent pivoted below the check and alined with the bumper, said detent at one end engaging a wall of the housing and at its other end in engagement with the bumper, a retaining brace pivoted below the check, and said brace having means engaging the check and detent respectively.

5. The combination with a housing, a springpressed elastic-rubber check pivotally suspended in the housing and a bumper on the check, of an elastic-rubber detent pivotally mountedbeneath the check, and co-acting means on the check and detent for holding the latter against a Wall of the housing in alinement with the bumper, a y

REFERENCES CITED i The following references are of Arecord in the le of this patent:

UNITED STATES PATENTS Number Name Date 847,113 Ridgway Mar. 12, 1907 2,247,618 Moroney July 1, 1941