US718432A - Combined bell and door-knob. - Google Patents

Description

'No. 718,432. a

T. E. GREGELIUS & G. B. PFENNIGHAUSEN.

COMBINED BELL AND DOOR KNOB.

APPLICATION FILED MAR. 17, 1902.

N0 MODEL.

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NliT-ED STATES PATENT ()FFICE.

THEODORE E. ORECELIUS AND GOTHARD E. PFENNIGHAUSEN, OF ST. LOUIS, MISSOURI. I

COMBINED BELL AND DOOR-KNOB.

SPECIFICATION forming part of Letters Patent No. 718,432, dated January 13, 1903.

Application filed March 17, 1902. Serial No. 98,653. (No model.)

To all whom it may concern:

Be it known that we, THEODOREE. CRECE- LIus and GOTHARD E. PFENNIGHAUSEN, of the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in a Combined Bell and Door-Knob, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, forming a part hereof.

Our invention relates to combined bells and door-knobs; and it consists of the novel construction, combination, and arrangement of parts hereinafter shown, described, and claimed.

Our object is to provide an improved device and place a bell on the door-knob, so that every time the knob'is operated to latch and unlatch the door the bell will ring; and our invention consists of the combination, with the shaft of a door-knob, of a clapperbase mounted loosely upon the shaft and held against rotation, a bell fixed upon the shaft and serving as a substitute for one of the knobs, posts extending outwardly from said base, clappers mounted upon said posts in position to engage the bell, balanced springs connecting said clappers to the posts, said springs being coiled cone-shaped, the small outer ends of the cones fitting tightly upon the posts and the extreme outer ends ofthe wires being placed against the end faces of the posts and soldered and the opposite ends of the wires being connected to the clappers, said springs being adjusted to hold the clappers in their normal central position, cams for operating said clappers, and an arm fixed upon the shaft of the door-knob for operating the cams. I

Figure 1 is an edge elevation of a door, showing the knobs on each side of the door, parts of the door being broken away. Fig. 2 is a View in elevation, showing the clapper-base with the clappers and cam mounted thereon. Fig. 3 is a central section on the line 3 3 of Fig. 1. Fig. 4 is an edge view as seen looking in the direction indicated by the arrow in Fig. 2. Fig. 5 isa plan of a modified construction.

Referring to the drawings in detail, the clapper-base 6 is loosely mounted upon the shaft 7 of the door-knob, and the arm 8 exthe base 6, and the balanced springs 14: and

15 connect said clappers to said posts, said springs being balanced and adjusted to hold the clappers out of engagement with the rim of the bell. The balanced springs are coiled cone shaped, the small outer end of the cone fitting tightly upon the posts, and the extreme outer end'of the wire is placed against the end face of the post and soldered, and the opposite end of the wire extending from the large end of the cone is attached to the clap per. The clapper is placed upon the post and moved to its central position. Then the spring is placed upon the post and attached to the clapper and then soldered, thus holding the clapper yieldingly in its normal central position, and the tension of the spring must be overcome to move the clapper in either direction. The arms 16 and 17 extend from the clappers 10 and 11 at an angle thereto. The cam-plate 18 is pivotally mounted upon the screw 19, secured to the base 6, and the cams 20 and 21 project from said cam-plate in position to engage the arms 16 and 17 as the plate is rocked upon its pivot. The points of the cams 20 and 21 are of such a length relative to the points of the arms 16 and 17 that when the cam-plate is rocked upon its pivot the point 20 will operate the arm 16 to wind up the spring 14 and then snap by said arm, thus releasing the spring and allowing the clapper to strike the bell. The same is true of the point of the cam 21 relative to the arm 17.

The arms 22 and 23 extend outwardly from the plate 18, and the arm 24, fixed upon the shaft 7, extends outwardly over the plate 18 and then downwardly to engage the arms 22 and 23 as required to rock the cam-plate 18 upon its pivot when the shaft 7 isrotated to latch or unlatch the door.

In Fig. 2 the clappers are mounted inside of the bell, and in Fig. 5 the clapper 10is mounted upon the post 12 outside the bell, and the cam 20 is mounted upon a post 25 and held in its normal position by the balanced spring The 26, and said cam may be manually operated by the handle 27. The spring 26 is identical with the springs 14 and 15. The point of the cam is in position to engage the point of the arm 16, move the clapper away from the bell, as shown in dotted lines, then snap by and allow the spring 14 to throw the clapper against the bell.

We claim 1. In a device of the class described, the combination with the shaft of a door-knob; of a clapper-base mounted loosely upon the shaft and held against rotation; a bell fixed upon the shaft and serving as a substitute for one of the door-knobs; posts extending outwardly from the base; clappers mounted upon said posts; independent balanced springs holding said clappers normally out of contact with the bell, said springs being coiled cone-shaped, the small outer ends of the cones fitting tightly upon the posts, and the extreme outer ends of the wires being soldered against the end faces of the posts, and the opposite ends of the wires connected to the clappers; cams for operating said clappers; and an arm fixed upon said shaft for operating the cams, substantially as specified.

2. In a bell, a post; a clapper pivotally mounted upon the post; a single independent balanced spring connecting the clapper to the post, said spring being coiled cone-shaped, the small outer end of the cone fitting tightly upon the post, and the extreme outer end of the Wire soldered against the end face of the post, and the opposite end of the wire connected to the clapper, said spring being adjusted to hold the clapper in its normal central position; an arm extending from the clapper at an angle thereto; and means of tripping said arm to operate the clapper, substantially as specified. t

3. In a bell, a clapper pivotally mounted; and a single independent balanced spring holding the clapper yieldingly in its normal central position, so that the clapper may swing either Way against the tension of the spring, substantially as specified.

In testimony whereof we alfix our signatures in presence of two witnesses.

THEODORE E. GRECELIUS. GOTIIARD E. PFENNIGHAUSEN.

Witnesses:

ALFRED A. EICKS, M. G. IRION.

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