US1275980A - Door stop and holder. - Google Patents

Description

L. C. NORTON.

DOOR STOP AND HOLDER.

APPLICATION FILED MAY 3. 1915.

1,275,980. Patented Aug. 13, 1918.

Fig. 1.

InvenTo v Lewis C. NorTon by MWKW ATrys.

LEWIS C. NORTON, 01E CHICAGO, ILLINOIS, ASSIGNOR T0 NORT ON DOOR CHECK COM- PANY, 0 CHIGAGO, ILLINOIS, A COOEATION OF WEST VG'IN.

DOOR S'lQP AND -HOER.

Specification of Letters Patent. Pajfl3ntig Aug 13, yet,

Application filed y 3, i910. serial No. 95,263.

To all whom it may concern:

Be it known that l, Lewis G. Non'ron, a

citizen of the United States, residing at Chicago, county of Cook, State of llllinois, have invented an Improvement in D001 Stops and Holders, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to a door stop and holder of the general type illustrated in my Patent No. 1,071,172, dated August 26,1913. The device of said application comprises two arms ormembers, each provided with a friction face adapted to engage that of the other member, one of said arms being pivotally connected to the door and the other to the door casing, and a pivotal connection between said arms or members which is so constructed that the friction faces are moved toward and into contact with each other as the door is opened.

The parts are so adjusted that the trio tion faces will be brought into firm frictional contact with each other when the door is opened to the desired point, the'friction between said faces operating to holdthe door in this position.

unlocking the door and permitting it to close in the ordinary way.

While a device such as illustrated in myposition of a little more than 90, yet it is not so satisfactory in holding the door firmly in an open position between 90 and 180. It is often important thata door should be capable of opening through a complete 180, and when this condition exists, it is often desirable to provide a stop which will hold the door firmly open at or near 180.

One of the objects of my present invention is the provision of an improved door holder which willhold the door firmly open in any position between 90 and 180.

Other objects of the invention are to provide an improved door stop and holder which is so constructed that the friction faces will always be maintained in proper come squarely into frictional engagement The application of theright amount of force to the door tending to close it will relieve the friction, thereby with each other when the door is opened,

a and also to improve door stops and holders of this type in other ways, alias will be more fully hereinafter setforth.

lln order to give an understanding of the invention l have illustrated herein a selected embodiment thereof which will now be described, after which the novel features will be pointed out in the appended claims. v

Figure 1 is a perspective view showing my improved door stop and holder as applied to a door;

Fig. 2 is a plan view showing the operation of my device;

Fig. 3 is an enlarged section on the line 2-2, Fig. l.;- 1

Fig. 4. is a perspective view of the stud 10.

In the drawings, 1 indicates a doorand 2 the door casing. My improved door holder and. stop comprises the two arms 3 and a Which are pivotally connected together at 15, and one of which is connected to the door, and the other of which is connected to the door casing. in the illustrated embodiment of'my invention the arm 4. is connected to the door and the arm 3 is connected to the door casing. The arm 3 may be connected directly to the door casing or may constitute the arm of a door check 20 which is shown as secured to a bracket 21 that is fastened to the door casing. This method of installing a door check is usually adopted where it is necessary to open the door through 180. llhe arm A: is provided ment with the head 5. When the door is opened the arm 4 will have a swinging movement relative to the door and to the shoe 7, and the construction of the screw-threaded stud is such that this movement will screw the two heads 5 and 8 toward each other so as to bring the friction faces 6 and 9 into engagement with each other, as ,shown by the full and dotted lines in Fig. 2. The stud 10 is so adjusted that when the door 1 is opened to the desired point the friction faces 6 and 9 will be brought firmly into frictional engagement, thus locking the door in open position. A slightpressure on the door tending to close it will release the fricconnection between the arm 4 and the door,

the axis of the hinge 22 of the door and the pivotal connection between the arm 3 and the door check 20 are in approximately the same line, the door may have a slight movement without appreciably changing the angle between the arms 3 and 4 and hence the door will not be firmly held ,in any position. The angle between the arm 4 and the door, however, is varied appreciably by any swinging movement of the door between the 90 and the 180 position and by placing the frictionfaces as shown in the drawings, a device is provided which will firmly hold the door in any desired position between 90 and 180.

In order that the door may be firmly locked it is desirable that the friction faces 6 and 9 should be maintained parallel to each other so that when they are in engagement, they will have firm contact with each other throughout their entire'extentQ To accomplish this it is, necessary'to' hold.

a the stud 10 exactly perpendicular to the faces. In the device illustrated in the'abovementioned patent the stud is anchored to one of the heads by means of a key, but where a key is used, the stud is apt to be forced out of its exact right-angular position, and the result is that thetwo friction faces do not stand exactly parallel and when the door is open they engage each. other at one side only. As an improvement on the construction illustrated in said patent.

I propose to make the head 8 with a noncircularopening 11, and to inake the in 10 with a non-circular portion 12 which tightly fits the opening 11. A nut 16 serves as a means for adjusting the pin or stud 10 in the head 8 so as to bring the friction faces into contact when the door is opened to the desired extent. By means of this construcpose of this construction is to provide for shifting the arms 3 and 4 relative to each other in a vertical direction to permit the device to 'be readily attached to any door. I claim:

1. In a door 'holder, the combination with a door and its casing, of a shoe secured to the door and provided with a head having a friction-face, a bracket secured to the door casing, a door check sustained by said bracket, an arm pivotally connected to the door check, a link pivotally connected at one end to the arm and having at its other end a head provided with a friction face, one of said heads havinga non-circular aperture therein, a'stud having a non-circular portion fitting said aperture and provided with a screw-threaded portion having screwthreaded engagement with the other head whereby opening movement of the door will move. said friction faces toward each other and closing movement of the door will separate said faces from each other. 2

2. In a door holder, the combinationwith a door and its door casing, of a door-holding device connecting the door and door casing and comprising two members, each having a head provided with a friction face, one of saidheads having a non-circular opening extending therethrough atright angles to said face, a stud having a central non-circular portion fitting said opening and provided with screw-threaded portions. at each end projecting beyond said head, one of said screw-threaded portions having screwthreaded engagement with the other head, and a nut on the other-screw-threaded end of the stud whereby opening movement of the door will bring the frictional faces into frictional engagement and the stud will be maintained at all times at right angles to the friction faces.

Intestimony whereof Ihave signed my name to this specification.

- LEWIBCJNORTON.

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