US1181075A - Door-closing mechanism. - Google Patents

Description

J. HASENPFLUG.

DOOR CLOSING MECHANISM.

APPUCATION FILED APR. 29, 1909.

LlfiLUYfi. Patented Apr. 25, 1916.

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JOHN HASENPFLUG, 0F GENEVA, OHIO, ASSIGNOR TO THE CHAMPION SAFETY LOCK COMPANY, OF GENEVA, OHIO, A CORPORATION OF OHIO.

DOOR-CLOSING MEGHANISHVI.

Application filed April 29, 1909.

To all whom it may concern:

Be it known that I, Joi-IN HASENPFLUG, a citizen of the United States of America, and a resident of Geneva, in the county of Ashtabula and State of Ohio, have invented certain new and useful Improvements in Door-Closing Mechanism, of which the following is a specification.

My invention relates to improvements in door checks and springs, and is shown herein, in connection with a liquid door check operating against a suitable fluid-pressure medium, such as oil or glycerin, although said invention does not relate to this feature, but rather to the spring-actuating mechanism and the means for adjusting the same.

In certain types of door checks and springs which have been sold in the past, the provision of a double acting spring wound alternatively from either end has in volved the connection of the actuating lever-arm with exterior members upon the cover as by ratchet mechanism or engaging parts which require adjustment. These, be-

ing situated exterior of the casing, are liable to gather dirt, to be misadjusted or term pered with, and not infrequently are broken. In my improved device, I have simplified the construction by connecting only the spindle with the lever arm, and have assooiated with said spindle, suitable clutch mechanism adapted to wind the spring in either direction. In connection with one of said clutch members, whichfor the sake of simplifying the parts, the casingcover preferably forms one element, I have provided adjusting means, whereby the tension of the actuating spring may readily be regulated. Details of these improvements will best be gathered by making reference to the accompanying sheet of drawings, where1n:

Figure I illustrates in vertical and longi tudinal cross section the preferred embodiment of my invention Fig. II shows the device with the spring casing partially broken away and the spring in section. Fig. III is a view of a modified type of door closing mechanism. Figs. IV and V respec-' tively are top and bottom views of the upper clutch member of the preferred embodiment. Fig. VI is a top view of the adjust ing means and cover of Fig. III. Fig. VII shows in perspective the middle clutch member. Fig. VIII shows the bottom clutch member employed in both types of door Specification of Letters Patent.

Patented Apr. 25, 1916.. Serial No. 492,827.

spring; and Fig. IX is a view partially broken away illustrating the adjusting means provided for the upper clutch member in the device of Fig. III.

Throughout each of the several figures of the drawings, I have indicated similar parts by the same character of reference.

With the exception of the upper clutch member and its adjusting means, the diflen ent types of device herein shown are exactly the same. The checking mechanism proper is of any suitable type and'may well conform to that shown in the patent to Blount, No. 458,357, August 25, 1891.

The casing comprises an upper spring casinga, and a lower cylindrical member 6, wherein piston c is adapted to be actuated. The latter is provided with one or more ball-valves 0" opening outwardly, and the plston is connected directly with a crank arm 0? upon the spindle cl, by means of a link a. The escape of the fluid from in front of the piston is regulated by a screw Z2 controlling the passage 12, while the spindle is adapted to be rotated in either direction by means of a lever-arm (not shown) suitably connected with a door; all as will be well understood by those conversant with the art.

Within the spring chamber a; is a helical spring 0 having hooked ends at the top and bottom, and the cross section of said springbody preferably is oval. The spindle passes through the center of the spring chamber and a suitable gland or packing d; and is squared throughout its upper portion to receive, both the actuating clutch member or dog f, and the lever arm for rotating said spindle.

At the bottom of the spring chamber and engaging the lower end of the spring 6, is located the bottom clutch member 9, which normally is withheld from rotation in a clockwise direction, by means of a stop or stud g screwed into the floor of the spring chamber. The lug 7 upon the dog f, engages a corresponding lug or extension 9 upon the bottom clutch member, and is adapted to rotate the same in a contraclockwise direction against the tension of the spring a. In accordance with my improved construction, the dog 7 alone rotates in either direction with the spindle, while the lower clutch member 9 is rotatably mounted about the stufling boX, and the rotatable clutch member h and cover j of the upper clutch mechanism, are loose upon and permit the free rotation of the spindle therein in a contraclockwise direction.

The upper clutch mechanism, as stated, preferably constitutes as well, the cover or closure-part for the spring chamber, and includes adjusting means for the spring, as will now be described in detail. Within the bore of the upper clutch member h (Fig. I),

is provided a spring 2' which encircles the spindle d, and is adapted to rotate said clutch member h in a contraclockwise direction with respect to the cover, to the end that a release of the screw h formingan adjusting detent for effecting the adjustment of spring 6, will hold the clutch member in position against stopa upon the casing, and permit the cover j to be turned, inorder to secure proper tension upon said spring 6. This is accomplished by rotating said cover through'a greater or less are to increase (or diminish), as required, the distance'between the lug j engaging the upper end of the spring and the extension h" upon said clutch member h. At the left-hand end of dogf, is provided an upper extension or lug f, which is adapted to engage theextension or fin k upon the member h, carrying the arm or extension h, and thereby serving to rotate said member and the connected cover j as a whole against the tension of springe, when the spindle is turned in a clockwise direction.

With reference to the modification shown in Fig. III, it is seen that the principles of operation are exactly the same as with the devicealready explained, except that a separate adjusting member 70 passes through the; cover j, and engages the upper clutch member it. These two parts; are respectively formed with engaging recesses and shoulders lo 70', which permit of their assemblage in the position shownin Fig. III upon either side of the cover, with the upper clutch member h in engagement with the middle clutch member f. The adjustment in an analogous manner, is eifected by rotating the supplemental cover or adjusting member is with respect to cover 3', which in turn rotates the clutch member h with respect to lug j upon cover 3', whereupon the parts are secured together by means of the pin 10 engaging suitable holes arranged in an are upon the cover j. Accordingly, with either of these types of spring'adjustment, it is seen that merely by turning the cover 7' by means of a suitable spanner engaging lugs Z thereon, for example, in a clockwise direction, meanwhile retaining the clutch member h with its arm or extension i in engagement with the lug a upon the casing, will serve to secure the relative adjustment, and increase or diminish the are between said arm it" and the lug j attached'to the upper end of spring e. The parts are held in the desired position of adjustment and the spring thereby placed under the required initial tension, by means of a suitable screw or pin, as indicated.

Inasmuch as I have provided no small exterior parts for engagement with the lever arm, but have retained the operative mechanism entirely within the spring casing, and as a part of the clutch mechanism, it is apparent that my improved device is not likely to be interfered with or broken, while the adjustment is so simple and direct, that no difficulty is experienced in altering the tension of the spring.

Havingnow explained the preferred embodiments of my invention, I claim as new, and desire to secure by Letters Patent, the following 1. In a door check and closer, the combination with suitable checking means, of a spindle connected to actuate the same when rotated in either direction, a casing, a sprin therein indirectly connected at either end with said spindle, clutch mechanism for effectingsuch connection, comprising a central dog and upper and lower clutch mechanism adapted to be alternatively actuated thereby and connected respectively with the corresponding ends of said spring; a portion of the upper clutch mechanism constituting a cover for the casing and having an associated adjusting arm, and stops upon the casing respectively engaging the lower clutch member and the adjustable arm, substantially'as set forth.

2. The combination in a door-closing mechanism, with an inclosed casing, of a rotatable spindle therein, a spring connected to reactrespectively against the casing and the spindle, and an adjustable connection for one end of said spring, comprising a rotatable attaching-part positioned wholly within the casing and connected with the spring, a co-acting arm movable with relation thereto, means for retaining it in its position of adjustment, and an internal stop within the casing adapted to be engaged by said arm, substantially as set forth.

3. In a door check and closer, the combination with suitable checking means including a piston, of a spindle connectedto the piston to -actuate the same, a spring connected to said spindle to be actuated thereby, and an adjustment for said spring, comprising a rotatable attaching-part connected with one end thereof, and a co-acting arm rotatably adjustable with respect to the point of connection with the spring, means for retaining said arm in its positions of adjustment, a stop against which the arm normally bears, and a casing wherein said spring, its rotatable attaching part and adjusting arm are positioned substantially as set forth.

4. In door check and closer, the combination With a suitable checking device, of a spindle adapted to actuate the same When rotated in either direction, a-casing, a. spring therein indirectly connected With the spindle by clutch mechanism, comprising a dog, a lower clutch member connected with the corresponding end of the spring and adapted to be rotated by the dog in one direction, and an upper clutch member, comprising a casing-cover connected With the spring, and an adjusting arm associated with said cover, an adjusting detent therefor, and stops upon the casing adapted respectively to engage the lower clutch member and the arm of said upper clutch member and prevent them from rotating in like directions, substantially as set forth.

mmem of tlhdlmi patent may be obtained for five cents each, by addressing the Waahinmon, D. C."

5. In an adjusting device for door springs, the combination With a rotatable cover-member connected With the spring and adapted to place the same under tension when rotated in a clockwise direction, of an adjusting arm independently rotatable with respect to said cover-member, an adjusting detent therefor, an independent spring tending to rotate said arm in a contraclockwise direction, and a stop-member adapted to be engaged by said arm, substantially asset forth.

Signed at Geneva, Ohio, this 31st day of March 1909.

JOHN HASENPFLUG. Witnesses:

E. W. HASENPFLUG, J G. BROWN.

Commissioner of Patentt,

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