US1921090A - Bell swinging device - Google Patents

Description

'2 Sheets-Sheet 1 Filed July 3, 1929 R401. Mung)? yw Hdqmey i- 1933. P. MULLER ,0

BELL SWINGING DEVICI Filed July 3. 1929 2 Shasta-Shoot 2 rangement.

Patented Aug. 8, 1933 UNITED STATES I BELL SWINGING' DEVICE Paul Muller, Neuf-Brisach, Haut-Rhin, France Application July 3, 1929, Serial No. 375,844, and

in France July 11, 1928 2 Claims.

This invention relates to a device forcontrollling the swinging of bells operated by an electromotor. Over the devices known in this art, the present invention is characterized by its exceptional simplicity and its easy, adjustable arrangement and suiting any size of hell.

In the accompanying drawings the invention has been illustrated by Way of example:

Fig. 1 is a front elevation of the device, showing its main operative parts;

Fig. 2 is a side elevation and Fig. 3 illustrates the rear side lever.

Fig. 4 illustrates diagrammatically the bell with its driving and controlling means.

Fig. 5 represents the switch and circuit arof the contact The driving of the bell axle by means of an electro-motor M is operated in a well known manner, for instance, by means of a" pulling element such as a linked Galls chain X (Fig; 4). The swinging movements of the bell axle are communicated to the shaft a of the device Y (Fig. 4) controlling the swings of the bell, which forms the object of the p re'sent application. In said device the shaft a driven by an endless belt from the motor M supports the freely swivelling contact lever b, the upper end of which constitutes a fork-shaped head with con tact elements c adapted to contact with fixed contacts arranged on the right and the left hand side. The swinging movement of the leverb causes a reversal of poles in the motor circuit by means of the contacts 0 engaging the fixed contacts, and by this the direction of rotation of the electro-motor is changed. The oscillation of the contact lever occurs each time when the swinging stroke of the bell Z has reached its maximum value. Y

When the device is not in operation, the lever b is in circuit closing position because of the unsymmetrical distribution of weight of the latter. This effect can be increased by a spring acting on the lever b.

Thel'ever b supports an electromagnet d, the armature e of which operates an axially sliding rod g arranged at the rear side of the lever b, the disposition being such that said rod is moved downwardly when the armature e is attracted. By interrupting the current in the electromagnet, a spring f brings the rod g back to its inoperative position. The magnet d is connected in the circuit of the driving motor. When the circuit is closed in the latter, the armature e is attracted and thereby the lower end 91 of the rod g engages ,inone of the notches 2 provided at the periphery of a disc h and so the coupling of the contact lever b with the disc it supported by the shaft (1 will be obtained. The disc h is loosely mounted and resiliently connected to the shaft a by means of a friction clutch formed of a sleeve '7' keyed on said shaft a and one or more spring operated brake shoes 7c acting on said sleeve. i i

For the purpose of securinga free swinging of the'lbell and obtaining a uniform beatingof the striker and in view of maintaining the swing of the bell in predetermined limits,the arrangement has been made that, for a determined amplitude of the swing of the bell; the contact lever b is brought in an intermediate inoperative position and remains out of its contact position until the swingingwill be brought below its normal amplitude. r

' For this purpose, the device supports a pinion 5 m, to which is imparted a reciprocating rotary movement by means of a pinion n fixed on the shaft az A disc p frictionally held against the pinion m under the pressure of a spring 0 and moving with same, supportstwo adjustable segments qi and qz, which afford a groove 1'1 and r2, so shaped that the widened ends of their guiding walls present a cam-shaped track. The contact lever b supports a roller 8, so arranged thatwhen overreaching a determined swinging stroke, said roller will engage the segment m or (12. When the shaft a will rotate in the right hand direction (Fig. 1) and thereby the pinion 1n will rotate in an anti-clockwise direction, the widened edge of the inner guiding wall of the segment qi will lift the rollers, whereas the widened edge simultaneously acts as an inclined plane to bring the lever b from its right hand contact position in the medium upright position. During the immediately following rotation in the left hand di- 95 rection, the lever b will be brought from its'left hand contact position in the medium position, by means of the widened end 0 of the outer guiding wall of the segment (12..

By the lifting of the lever b out of its contacts position in the right or left hand side, the working periods of the driving electro-motor become limited to a constant dimension of the swing of the bell and the bell can swing freely in both directions. The segments qi and n regulating the swinging stroke, and the abutments t1 and t2 which limit the stroke of the roller 3, are adjustably arranged with respect to the size of the bells.

The working of the device using a three-phase 10 j on which will engage at a given moment one of the notches-210i disc h. The disc h rotates with the shaft a of the motor, to which it is frictionally connected by the sleeve'j and the brake shoes is.

So the lever 22' is directly coupled with the shaft 0, of the motor and'remains coupled therewith'a's long as the circuit will not be interrupted in the switch A. The lever b will have an oscillating movement between the fixed contacts, and oper ate at each abutment with said fixed contacts the reversion of rotation of the motor. When the circuit is interrupted by means of the switch A, the action of the electromagnet d is released and the lever b is disengaged from the disc h and drops freely on one or the other of the fixed contacts. p a

2. When the swinging motion of the bell reaches a certain amplitude, it becomes necessary to suppress the propulsive action of the motor. For this purpose, the segments (11 and q2 have been provided in the arrangement as described herebefore. It is obvious that, when the swinging motion of the bell will be of importance, the rotation'of the pinion m will also be considerable. Said rotation is continuously reversed in direction, as obviously understood "from the foregoing description. When the roller -s will be engaged in one or the other of the segments qi and qz which-are arranged to lift and maintain the lever in the medium position, the motor will be no longersup plied with current and the bell itself, by its swinging motion, will make the motor rotateas a generator.

The frictional coupling .9, It allows the rotation of shaft a, without said rotation having influence onleve'r'b. As soon as the amplitude of thejsw'ing of the bell is suiiiciently decreased, the pinion "m supporting the segments qi and (12 will have a small angular displacement from its normal rest position,so that the lever b will again be allowed to {abut on the fixed contacts before the 'roller swill be engaged by the segments (11 or' qz upon increased amplitude of swing of the bell in the op-' greater than that wanted to maintain the lever 'b in the medium position.

By the fact that following the size 'of'the bell producing the movement of the pinion m, the

stroke limit of the segments wand (12 is variable, the abutments hand in are made adjustable, for allowing adjustment of the apparatus.

I claim:

1. In a bell ringing device comprising a motor,

a bell adapted to be oscillated by said motor, a shaft, mechanical means-connecting the bell and the shaft for oscillating. the latter, an electric circuit for. the motor and a fixedco'ntact in said circuit, the combination of a freely swivelling' contact lever, a contact supported by said lever and arranged to engage the fixed contact of the motor circuit, means to maintain the contact lever in circuit closing position when the circuit of the motor is interrupted, an electromagnet supported by the contact lever and connected in the circuit of the motor, a disc frictionally clutched on the shaft and having peripheral notches, a sliding rod supported by the contact lever and operated by the armature of the magnet to engage with its end. one of said notches, a return spring for the rod, a pinion keyed on the shaft, a second pinion'meshing with the aforesaid pinion, a disc frictionally held against said second pinion, an adjustable segment upon said disc having a groove With cam-shaped widened guiding walls facing the contact lever,'an adjustable abutment insaid groove, anda roller supported by the contact lever adapted to engage the groove'of said segmentfwhen the swing of the bellin one direction exceeds a predetermined amount, substantially as described and for the :purpose set forth.-

shaft, mechanical means connecting the bell and the shaft for oscillating the. latter, anelectri'c circuit for the motor and two fixed contacts in said circuit, the combination of a freely swivelling contact lever supported by said shaft, a pair of contacts supported by said lever and arranged to engage the fixed contacts of the motor circuit, means to maintain thebontact lever in circuit closing position when thecircuit of the motor.

is interrupted, an electromagnet supported by the contact lever and connected in the circuit of the motor, adisc frictionally clutched on the shaft and 'h'avingl peripheral notches, a sliding rod sup-- ported by the contact lever and operated by the armature of the magnet to engage with its end :12

PAUL ULLER.

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