Field of Invention
This invention relates to educational and amusement devices which provide for the observation of the motion of one body with respect to another body as a consequence of gravitational forces acting on rounded moveable members, such as balls, which move along established paths of travel. More particularly, the invention relates to amusement devices in which rounded moveable members, such as balls, are directed along two established and independent lengths of transparent tubing which are arranged within a transparent sphere.
Description of Prior Art
Prior devices are known in which the motion of balls along directed paths, (typically fixed transparent tubes), are used as educational and amusement attractions. However, in many such prior devices the transparent tubes are physically exposed and can be easily damaged when used by young children.
In many prior devices it is not possible to watch the relative motion of two different balls along independent paths. Additionally, there is typically a "base" for such devices which dictates an inherent "upright" position in which the device is normally oriented. Also, prior devices do not provide for the observation of relative motion between balls directed along a cylindrical helix and along a spherical helix.
Summary of the Invention
It is an object of the invention to provide a transparent sphere which encloses two independent lengths of transparent tubing, each containing a moveable ball.
It is another object of the present invention to provide a device of the character described that is a safe and clean toy.
It is another object of the present invention to provide a device of the character described in which the balls inside of the independent lengths of transparent tubing can be moved from one end to the other by the force of gravity.
It is another object of the present invention to provide a device of the character described in which one length of transparent tubing effects a cylindrical-helical path from the "top" to the "bottom" of the transparent sphere and a second length of transparent tubing effects a spherical-helical path from the "top" to the "bottom" of the circumference of the transparent sphere.
It is another object of the present invention to provide a device of the character described in which the balls can be caused to move by turning the sphere from "top" to "bottom".
It is another object of the present invention to provide a device of the character described in which the independent motion of the two balls can be observed relative to each other.
It is another object of the present invention to provide a device of the character described which is an educational device.
Further objects and advantages of my invention will become apparent from a consideration of the drawings and ensuing description thereof.
Brief Description of the Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an elevation view of the present invention; and
FIG. 3 is a plan view of the present invention.
Description of the Preferred Embodiment
As shown in the drawings, in the preferred embodiment of the invention a hollow transparent sphere (1) encloses a transparent tube (2). Transparent tube (2) is attached to the inside surface of transparent sphere (1).
A transparent cylindrical support (6) whose axis passes through the center of transparent sphere (1) is located inside of the transparent sphere (1). The transparent cylindrical support (6) is attached at its ends to the inside surface of transparent sphere (1).
A transparent tubing (5) having a cylindrical helix configuration whose axis is concidental with the axis of the transparent cylindrical support (6) is attached to the transparent cylindrical support (6). Transparent tubing (5) extends from one end of transparent cylindrical support (6) to the other.
The two ends of transparent tubing (2) are attached to the inside surface of transparent sphere (1) near the two ends respectively, of transparent cylindrical support (6). Transparent tubing (2) extends along the inside surface of transparent sphere (1) in a number of convolutions thus effecting a spherical-helix configuration whose axis is coincidental with the axis of the cylindrical helix described by transparent tubing (5).
Within the transparent tubing (5) is a rounded moveable member such as a ball (4) which travels within the tubing due to the force of gravity when the axis of the cylindrical helix described by the transparent tubing (5) is in a generally vertical orientation.
Within the transparent tubing (2) is a rounded moveable member such as a ball (3) which travels within the tubing due to the force of gravity when the axis of the convolutions of transparent tubing (2) is in a generally vertical orientation.
The present invention can be turned from "top" to "bottom" by children using the device whose interest may be attracted by the spiralling downward motion of balls (4) and (3) relative to each other. Specifically, the motion of ball (4) through the cylindrical helix path directed by transparent tubing (5) may be observed relative to the motion of ball (3) as it travels through its spherical-helix path as directed by the configuration of transparent tubing (2). This observation of motion of one body with respect to another moving body is educational as it shows like motion proceeding independently of each other.
The embodiment that is described by this invention as shown in the drawings is intended for illustration and does not limit modifications to these drawings that do not depart from the spirit of the invention. Accordingly, the scope of the invention should be determined not by the embodiment illustrated, but by the appended claims and their legal equivalents.