US2039961A - Door check - Google Patents

Description

May 5, 1936.

R. c. JACOBS 2,039,961

DOOR CHECK Filed July 29, 1955 5 IQ \\,v\ 14 12 5 .1; 5 1 /11, -10 6 17 6 f 1 18 9 19 3 \LL[ I INVENTOR. 5%! CT efocos ATTORNEYS Patented May 5, 1936 UNITED STATES PATENT OFFICE 4 Claims.

This invention relates to door checks of the type shown inmy co-pending applications Serial No. 23,352, filed May 25, 1935, and Serial No. 33,636 filed July 29, 1935.

The primary object of the present invention is to provide a door check suitable for use in combination with automobile doors, the check being designed to provide a cushioning action whereby the swinging movement of a door may be stopped without setting up stresses and strains in the door, the hinges or the parts of the automobile body supporting the door. In providing a check embodying cushioning characteristics it has been found that repeated opening and closing of the door results in the metal becoming fatigued due primarily to the fact that the cushioning part of the check is repeatedly strained beyond its elastic limit. Therefore, it is another object of the invention to provide a door check with cushioning means which avoids a fatigue condition being set up in the metal of the check and thus to increase the useful life of such checks.

With the above and other ends in view the invention is more fully disclosed with reference to the accompanying drawing, in which- Figure 1 is a cross section illustrating the check in combination with a door;

Fig. 2 is a similar section illustrating the checking action, and

Fig. 3 is an elevation of the device.

Like characters of reference are employed throughout to designate corresponding parts.

The numeral I designates a door of sheet metal construction having its end wall 2 provided with an opening 3. Secured to the inner surface of the wall 3 is a socket 4, the rear wall of the socket being inclined as a 5 and provided with an aperture 6. A door jamb I has its end wall 8 provided with a pair of spaced apart lugs 9 supporting a pin Ill, one of the lugs 9 being shown in the drawing.

The door check comprises a fiat strip of metal bent to provide a loop II through which the pin I extends. Extending outwardly from the loop II and through .the aperture 6 is a bowed run I2 which terminates at the shoulder I3. The shoulder I3 merges into a flat run I4 at the end of which is formed an arcuate part I5, the terminal of. the blank extending tangential to the curvature of the arcuate part I as indicated at I6.

A flat metal strip is Welded or otherwise secured at IT to the run I2 and has a straight run l8 diverging outwardly from the run I2. The run I8 terminates at a shoulder I9 and a flat run 20 attends from the shoulder I9 past the terminal The runs I2 and I8 are normally spaced apart a distance greater than the width of the aperture 6 so that when the door is moved, from the posi- 5 tion shown in Figure 1 to that shown in Figure 2, the runs I2 and I8 must be compressed by the side walls of the aperture in order that they may be drawn through the same. This sets up a frictional condition which tends to retard movement 10 of the door after it passes a certain stage in its movement.

When the door is fully opened as shown in Figure 2 the run 20 presses against one side wall of the aperture 6 and functions to hold the end of the run I2 against the opposite side wall of the aperture. The shoulder I3 is thus held against the inclined wall 5 to prevent the run I2 from being entirely drawn through the aperture. The shoulder l9 will act to prevent movement of the door from its open to its closed position but due to the flexibility of the run I8 the shoulder I9 may be moved through the aperture 6 upon application of manual pressure on the door.

When the shoulder I3 initially engages the wall 5 the run I2 will be in a bowed condition and this bowed condition provides tensional resiliency which results inthe cushioning action.

Although a specific embodiment of the invention has been illustrated and described it will be understood that various changes may be made within the scope of. the appended claims without departing from the spirit of the invention, and such changes are contemplated.

What I claim is:

1. A door check comprising a spring metal blank bent to provide a pin retaining means, tensionally resilient means extending outwardly from said retaining means and having an abutment at its outer end, laterally resilient means united with said abutment, and a laterally yieldable strip connected at one end to said tensionally resilient means and having its other end adapted for engagement with said laterally resilient means.

2. A door check comprising a spring metal bla k bent to provide a pin retaining means, tensionally resilient means extending outwardly from said retaining means and having an abutment at its outer end, laterally resilient means united with said abutment, a laterally yieldable strip connected atone end to said tensionally resilient means and having its other end adapted for engagement with said laterally resilient means, and an abutment on said laterally yieldable strip.

3. A door'check comprising a spring metal strip 5 bent to provide a pin retaining loop at one end, a bowed run extending outwardly from said loop, a shoulder at the outer end of said run, said shoulder merging into a spring portion formed with its terminal extending at an angle relative to the plane of said run, and a flexable strip having one of its ends attached to said run and its other end extending beyond and adjacent to the end of said terminal.

4. A door check comprising a spring metal strip bent to provide a pin retaining loop at one end,

a bowed run extending outwardly from said loop,

, a shoulder at the outer end of said run, said shoulder merging into a spring portion formed of said terminal, and a shoulder on said flexible strip.'

REX C. JACOBS.

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