Amusement devices: toys – Rotating or having visible rotating portion – Handle supported manually actuated rotating portion
Patent
1997-10-15
1999-12-21
Hirsch, Paul J.
Amusement devices: toys
Rotating or having visible rotating portion
Handle supported manually actuated rotating portion
A63H 100
Patent
active
060041846
DESCRIPTION:
BRIEF SUMMARY
This invention refers to a device for converting a linear movement in opposite direction into a rotary motion along an eccentric orbit, which device can have a plurality of uses and, in this application, will be described and illustrated through an example mainly intended as an amusing toy.
The invention consists of causing a body to rotate and continuously maintain its revolution about a stationary center, acting on the "constraint" that makes this generally rotary motion possible.
The applicant has empirically verified that by abruptly rythmically modifying the lenght of the constraint securing the body to its center of revolution, this revolution can be increased relatively to both its angular speed and its duration.
In this illustrative embodiment the length of the constraint is varied by using a string as a constraint and suitably modifying the length of the string, to the end of which the body to be rotated is secured.
Therefore, according to this embodiment intended as a toy, the device of the invention comprises a body, a string and a shorts length of a pipe or sleeve in the bore of which the string is fitted so as to form therealong three continuous but distinct lengths of the string, and more precisely a length running within the sleeve and two lengths protruding from the mouths thereof. The body to be rotated, which can be for example in the form of a small ball, a small aeroplane, a rocket and the like, is secured to the end of one of these lengths, which from now on is called the outer string length.
With such an arrangement, the sleeve mouth from which the outer string length protrudes is the center or origin of revolution of the string-body system, as it will be more particularly described.
In use, substantially maintaining the sleeve in a generally horizontal stationary position, for example keeping it in one hand, while grasping with the other hand the string length protruding from the sleeve mouth opposite to the mouth defined as the center of revolution of the system, which string length will be called from now on the inner string length, the body will be caused to oscillate with a pendular movement. It has been found that, with the body so oscillating with a pendular movement, any "pulling" and "releasing" action exerted on this inner string length by the relative hand and the consequent lengthening and shortening of the outer string length that secures the body to its center of revolution will cause the body to start rotating and continuously rotate at an angular speed varying from a minimum to a maximum value according to the intensity of the pulling and releasing action exerted on the inner string length.
These being the premises, a more careful study will show that the motion of the body occurs along eccentric or generally elliptical orbits having a variable dimension, wherein the sleeve mouth is the fulcrum of the outer string length, which fulcrum is one of the focuses thereof, the orbits lying in the vertical plane passing through the sleeve mouth and normal to the axis of the latter.
As it will be evident, in other future possible uses of the invention, the length of pipe or sleeve can be horizontally secured to any support, such as a stand, a pole, a framework and the like, while the action exerted by the free hand on the inner string length i n the toy can be replaced by a pulling and releasing action exerted, for example, by an eccentric or a system of eccentrics.
As it will be more particularly described, in both cases the pulling and releasing action exerted either by the eccentric or the system of eccentrics will have to be synchronized "in phase" with the position of the body along the orbit, depending on the position being above or below the horizontal plane passing through the center or origin of revolution.
The motion occurs about the center or origin of the rotary motion, which center generally consists of a hole, a vent or a mouth from which the outer string length to the end of which the body is secured is protruding.
From the foregoing it is evident that through th
REFERENCES:
patent: 3655190 (1972-04-01), Lemon
Hirsch Paul J.
Priddy Michael B.
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