US927498A - Closing device with stop for swinging doors. - Google Patents

Description

A. DAMITZ. CLOSING DEVICE WITH STOP FOR SWINGING DOORS.

APPLICATION FILED Juma, 1901.

Patented July 13, 1909.

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A. DAMITZ. CLOSING DEVICE WITH STOP FOR swmema noons.

APPLICATION FILED JAN. 28, 1907.

927,498. Patentd July 13, 1909.

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CLOSING 1mm WITH s'ror FOR swmeme noons.

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- Patented July 13, 1909.

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UNITED STATES PATENT OFFICE.

ADOLF DAMITZ, OF BERLIN, GERMANY.

CLOSING DEVICE WITH STOP FOR SWINGING DOORS.

T 0 all whom it may concern:

Be it known that I, AnoLF DAMITZ, manufacturer, a subject of the Empire of Germany, residing at Elisabeth-Ufer 53, in Berlin, Empire of Germany, have invented certain new and useful Improvements in Closing Devices with Steps for Swinging Doors, of which the following is a specification.

This invention relates to closing devices for doors, especially to swinging doors that swing both ways to the closed position.

The invention has for its object to provide an improved means for returning the door to its closed position when swung inwardly or outwardly, and which will insure the door being swung to a closed position without vibrating to and fro from such position in the act of closing.

The checking device or retarding means by which the present invention is controlled forms no part of the present invention. The device can be easily secured to the door without the aid of any skilled mechanic.

The accompanying drawings illustrate embodiments of my invention in which- Figure 1 is a plan view. Fig. 2 is a section Fig. 3 is a side elevation showing certain parts in vertical section. Fig. 4is an end elevation, showing certain parts in vertical section. Figs. 5, 6 and 7 show details of the levers and links connecting the closing device with the lintel of the doors; Figs. 1, 2 and 1 show details of the mechanism; and Figs. 8 and 9 show the device attached to a double door and a single door respectively.

The device is illustrated as comprising a vertical housing 23 of substantially cylindrical shape and a horizontal cylindrical housing 22 that may contain any suitable retarding means such as a dash pot. This art of the device is not illustrated but will be of a character that will permit the main spindle to be swung in either direction from an intermediate position without any material resistance being offered but will retard the return movement to the intermediate position so that the closing movement is checked. The lower housing 22 is shown as having end members 25 and 26, and the housing 23 is provided with a to member 24.

In the housing 23 is rotatab y mounted a carrier 3 comprising in its construction a sleeve 27, loosely surrounding the spindle or shaft 1, and an offset open ended cylindrical portion or base having a vertical projection Specification of Letters Patent.

Application filed January 28, 1907.

Patented July 13, 1909.

Serial No. 354,358.

7, constructed and arranged to engage an inwardly projecting lug 10 on the inner wall of the housing as shown in 2 and 4. The housing is provided with a slot or recess 9 to permit the insertion in the housing past the lug 10 of said projection 7. The lower part of the carrier rotates a collar 4 carried by a spindle 1 that rotates in the sleeve 27. A pin 5 on the spindle 1. engages a lug 6 011 the inner wall of the carrier 3 at its offset portion. In the carrier 8 is a coil spring 2 having its outer end bent back to form a hook that engages the extension 7 of the casing.

The bushing 11 surrounds the spindle 1 and is rotatably mounted on the sleeve 27. The upper part of the bushing projects through the bore in the top member 24 and has a flange provided with ratchet teeth. 11'. This bushing has a slot 12 at which. is engaged the inner end of the spring A. sleeve 13 surrounds the upper part of the spindle 1 and has a plate 14 to which is pivoted a pawl 15 that engages the ratchet teeth 11 on the bushing. The sleeve 13 also carries a lug 1 1. The spindle 1 carries a cross arm 17 fast on its upper end to which is pivoted a lever 19 having a movement in a vertical plane. The arm 17 carries a lug 18 in position to engage the lug 1 1 on the sleeve 13.

Any suitable lover or link arrangement may be used to connect the lever 19 with the lintel or other suitable part of the door. In the construction illustrated, a link 20 is pivotally connected with the arm by means of a screw 20* and a block 20*. The other end of link 20 is pivotally connected with a bracket 29. In the construction shown in Fig. 7 this pivotal connection may be by means of a threaded arm 28 on the lever 20 thatengages a threaded bore in the bracket. By this means when the lever 20 is swung it will be given a vertical movement also. By the use of this lever arrangement when the door is swung in the opposite direction from the side to which the closing device is secured, the lever 19 will swing downward and freely pass under the lintel of the door.

A simple lever arrangement is shown in. Figs. 5 and 6 in which the adjusting mechanism is not provided.

In the assembling of the mechanism the springis first tensioned before the arm 17 is placed on the spindle. This is accomplished by putting a spanner around. the ratchet wheel 1S and turning this to the left, when the inner end of the spring will be turned and the spring placed under tension, the spring being fastened at its other end to the projection 7 of the carrier 3. The spring is held under tension by the pawl 15 engaging the ratchet wheel 11 When released the pawl 15 will turn the sleeve 13 to the right until the projection 14 abuts the projection 16 of the housing cover 24. Thereupon the lever and link arrangement can be secured in place.

When the door is opened and swung away from the side to which the closing device is attached, the lug on the arm will push the plate 14 and through the pawl will rotate the sleeve 13 and wind up the spring from the inner end. When released the tension of the spring will return the parts with the lever until the abutment on the plate 14 engages the lug on the top 24, such movement being retarded by the checking device. In this described movement of the parts, the outer end of the spring will be held against movement by reasonof its engagement with the casing 3, and the latter through the projection 7 will be arrested by engagement with the lug 10. Upon the arm and lever being swung in the opposite direction, the pin 5 on the spindle will strike the lug 6 on the carrier 3, and thereby wind up the spring from its outer end. During such movement the inner end of the spring is locked by reason of the lug on the plate 14 pressing against the lug 18 on the top 24: of the housing. During the latter movement, the projection 7 on the carrier 3 moves away from the lug 10 on the inner wall of the housing being free to move in that direction and during the other movement, the pin 5 swings away from the lug 6 on the casing.

Having thus described my invention, I claim:

1. In. a door closer, the combination of a housing having a lug on its inner wall, a carrier rotatable 1n the houslng and having a projection arranged to engage said lug, a COll spring located in the carrier with its outer adapted to engage the lug on the casing, an

arm on the spindle carrying a lug, a bushing surrounding the sleeve of the carrier, the bushing having the inner end of the spring secured thereto and also having ratchet teeth on its upper part, a sleeve surrounding the spindle above the bushing and carrying a lug arranged to engage the lug on the arm, and a lug on the upper part of the housing arranged to engage the lug on the sleeve.

2. In a door closer, the combination with the spring device operable to return the door to an intermediate position upon the door being swung in either direction from said position, of a rotatable spindle to operate said device, an arm fast on the outer end of said spindle, a lever pivotally mounted on said arm to have vertical movement, a link member having one end pivotally connected with the other end of said lever, a bracket on the door frame, and the link member and bracket having a screw-threaded connection whereby the swinging of the link on the bracket will give the link an axial movement to raise and lower the lever bodily when swung in opposite directions respectively.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ADOLF DAMITZ.

Witnesses:

WOLDEMAR HAUPT, HENRY HAsPER,

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