US3600973A - Oscillating system - Google Patents

Abstract

An oscillating system includes two identical rotary oscillators each having a rotating mass and a vibratory spring. The rotating masses oscillate in phase opposition, and the two rotary oscillators have respective shafts mounted in spaced parallel relation in working plates. One end of each vibratory spring is connected to the associated rotating mass, and the opposite ends of the two vibratory springs are interconnected by an elastic intermediate spring part, and the two vibratory springs are wound in the same sense. The intermediate spring part extends substantially perpendicular to the shafts and is integral with the two springs. The springs may be helical springs or flat coil springs.

Description

United States Patent lnventor Albrecht Hug Schwenningen am Neckar, Germany Appl. No. 866,973 Filed Oct. 16, 1969 Patented Aug. 24, 1971 Assignee Kienzle Uhreniabriken GmbH Schwennlngen am Neckar, Germany Priority Oct. 29, 1968 Germany P 18 05 777.7

OSCILLATING SYSTEM 7 Claims, 4 Drawing Figs.

U.S. Cl 74/574, 58/23 TF, 58/28 A Int. Cl F161 15/12 Field of Search 74/574, 96;

58/28 A, 28, 23 TF; 185/29 [56] References Cited FOREIGN PATENTS 1,158,971 7/1969 England 74/96 UX 435,122 10/1967 Switzerland 58/23 TF Primary Examiner-William F. O'Dea Assistant Examiner-F. D. Shoemaker Attorney-McGlew and Toren ABSTRACT: An oscillating system includes two identical rotary oscillators each having a rotating mass and a vibratory spring. The rotating masses oscillate in phase opposition, and the two rotary oscillators have respective shafts mounted in spaced parallel relation in working plates. One end of each -vibratory spring is connected to the associated rotating mass,

and the opposite ends of the two vibratory springs are interconnected by an elastic intermediate spring part, and the two vibratory springs are wound in the same sense. The intermediate spring part extends substantially perpendicular to the shafts and is integral with the two springs. The springs may be helical springs or flat coil springs.

PATENIEUAucmsn SHEET 1 BF 2 C) 5 i i Fig.1.

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INVENTOR:

ALBRECHT HAAG By Attorneys PATENIED AUB24 IQII SHEET 2 [IF 2 INVENTOR:

Attorney OSCILLATING SYSTEM BACKGROUND OF THE INVENTION In a known oscillatingsystem of the type mentioned, each of the two rotary oscillators comprises a rotating mass and a helical spring. One end of each helical spring is secured to the associated rotating mass, while the other end of each spring is secured to a frame by a post. The two rotating masses oscillate in phase opposition. This is to avoid that a part of the energy of the rotary oscillators, havingahigh energy content, is imparted to the frame. Due to the fact that the rotating masses oscillate in phase opposition, the reactions of the rotary oscillators upon the frame are oriented in opposite directions, thus cancelling each other out.

However, this known oscillating system will impart no energy to the frame ofa time piece, for example, only if the two rotary oscillators are very accurately tuned to each other with respect totheir frequency. However, it is very difficult to effect such mutual tuning with high accuracy.

SUMMARY OF THE INVENTION This invention relates to oscillating systems and, more particularly, to an improved oscillating system comprising two identical rotary oscillators and not requiring mutual tuning of the two rotary oscillators to each other, and in'which no energy is imparted to the mounting frame.

In accordance with the invention, in an oscillating system of the type mentioned, the ends of the vibratory springs, opposite to those ends connected to the respective rotatingmasses, are interconnected by an elastic intermediate spring part and both vibratory springs are wound'in the same identical sense. Thus, and in contrast to known vibratory systems, such opposite ends of the springs are not connected to the frame but are connected to each other.

An object of the invention is to provide an improved oscillating system consisting of two identical rotary oscillators.

Another object of the invention is to provide such an improved oscillating system in which only one of the rotary oscillators need be tuned. J v

A further object of the invention is to provide such an improved oscillating system in which no energy is imparted to a mounting frame.

Another object of the invention is to provide such an oscillating system in which each rotary-oscillator includes a rotating mass and a vibratory spring, with the rotating masses oscillating 'in phase opposition and one end of each vibratory spring being connected to the associated rotating mass and the other ends of the vibratory springs being interconnected.

A further object of the invention is provide such an improved oscillating system in which both vibratory springs are wound in the same sense.

For an understanding of the principles of the invention, reference is made to the following description of a typical embodiment thereof as illustrated in the accompanied drawing.

BRIEF DESCRIPTION OF THE DRAWING to FIG. 1 of another embodiment of Referring to the drawing, an oscillating system embodying the invention consists of two identical rotary oscillators. Each rotary oscillator comprises a helical spring2 or 2 and a'rotat ing mass 3, 4 or 3, 4'. The two rotating masses, 3,4 and 3', 4', are mounted in working plates or frames 6 through the medium of respective shafts l0 and 10' which are in spaced parallel relation with each other. The rotating mass components 4 and 4' are permanent magnets which cooperate with winding 5. The arrows in FIG. 1 indicate the phase opposition of the oscillating directions of the two rotating masses.

As best seen in FIG. 2, end 8 of helical spring 2 is secured to rotating mass 3 by means of a post, and end 8 of helical spring 2 is secured to rotating mass 3' in a corresponding manner. The other ends 9 and 9' of springs 2 and 2', respectively, are interconnected, preferably through an elastic intermediate spring part 7 which extends substantially perpendicular to the shafts l0 and 10'. Springs 2 and 2 and intermediate spring part 7 preferably are formed integral with each other, as illus trated in the drawing. Also as illustrated in the drawing, helical springs 2 and 2' are wound in the same sense.

It is possible, within the scope of the invention, to substitute flatcoil springs 2", 2" for helical springs 2 and 2' as shown in FIGS. 3 and 4. The two oscillators also may be mutually spaced and staggered.

The oscillating system embodying the invention requires frequency harmonization in only one rotating mass. The nodal point may range anywhere within the area of intermediate spring part 7. Consequently, only the mass of one rotary oscillator is tuned for frequency harmonization, whereas no adjustment whatever needs to be made at the other rotary oscillator. The longer the intermediate spring part 7, the greater may be the differences in the moment of inertia of the two rotating masses.

While a specific embodiment of the invention has been shown and described in detail to illustrate the application of the principles of the invention, it should beunderstood that the invention may be embodied otherwise without departing from such principles.

What is claimed is:

1. In an oscillating system including two identical rotary oscillators each having a rotating mass and a vibratory spring, the rotating masses oscillating in phase opposition and the two rotary oscillators having respective shafts mounted in space parallel relation in support plates, with one end of each vibratory spring being connected to the associated rotating mass; the improvement comprising, in combination, means interconnecting the opposite ends of said vibratory springs; both said vibratory springs being wound in the same sense.

2. In an oscillating system, the improvement claimed in claim 1, in which said interconnecting means comprises an elastic intermediate spring part.

3. In an oscillating system, the improvement claimed in claim 2, in which said intermediate spring part extends substantially perpendicular to said shafts.

4. In an ,oscillating system, the improvement claimed in claim 2, in which said intermediate spring part is integral with said vibratory springs.

5. In an oscillating system, the improvement claimed in claim 2, in which said vibratory springs are helical springs.

6. In an oscillating system, the improvement claimed in claim 2, in which said springs are flat coil springs.

7. In an oscillating system, the improvement claimed in claim 2, in which said oscillators are mutually spaced and staggered.

Claims (7)

1. In an oscillating system including two identical rotary oscillators each having a rotating mass and a vibratory spring, the rotating masses oscillating in phase opposition and the two rotary oscillators having respective shafts mounted in space parallel relation in support plates, with one end of each vibratory spring being connected to the associated rotating mass; the improvement comprising, in combination, means interconnecting the opposite ends of said vibratory springs; both said vibratory springs being wound in the same sense.

2. In an oscillating system, the improvement claimed in claim 1, in which said interconnecting means comprises an elastic intermediate spring part.

3. In an oscillating system, the improvement claimed in claim 2, in which said intermediate spring part extends substantially perpendicular to said shafts.

4. In an oscillating system, the improvement claimed in claim 2, in which said intermediate spring part is integral with said vibratory springs.

5. In an oscillating system, the improvement claimed in claim 2, in which said vibratory springs are helical springs.

6. In an oscillating system, the improvement claimeD in claim 2, in which said springs are flat coil springs.

7. In an oscillating system, the improvement claimed in claim 2, in which said oscillators are mutually spaced and staggered.

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