Toy &amp; instructional apparatus
BACKGROUND OF THE INVENTION 
     In the past, various toys embodying the use of air pressure have been developed. In some instances, these toys have used the blowing capacity of a human being as the actuating power source. Such devices are disclosed in early prior art patents, U.S. Pat. No. 741,360 granted to Mosley, Oct. 19, 1903 and U.S. Pat. No. 793,177 granted to Cady, June 27, 1905. These two patents represent the Prior Art known to Applicant and Applicant&#39;s attorney at the time of filing the present application. In the Mosley patent, a hollow inflatable and collapsible figure is projected out of a receptacle and inflated by the force of a person blowing through a mouth piece into the receptacle. In the Cady patent, a float or follower member is mounted within a tube and is projected upwardly in the tube by the force of a person blowing into a mouth piece connected to the bottom of the tube. The force is measured by the distance the follower is moved within the tube. Neither of the two prior art patents is particularly pertinent to the present invention. 
     SUMMARY OF THE INVENTION 
     The present invention embodies a hollow tube open at both ends and having a plurality of light weight elements slidably mounted within the tube. The light weight elements are connected to each other by a flexible thread which is also anchored at one end within the tube so that when a person blows on one end of the tube, all of the light weight elements are blown out of the tube and fall serially from the exit end and are loosely connected by the flexible thread. 
    
    
     DETAILED DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a longitudinal sectional view of apparatus embodying the invention; and 
     FIG. 2 is a similar view of a slightly modified form of the invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     As shown in the accompanying drawings, a hollow generally cylindrical tube 10 is provided. A plurality of light weight spherical ball units 11 are mounted within the tube 10. The balls 11 are connected by a light weight thin thread member 12 which may extend serially through the balls, as shown. The balls may be hollow, as shown in FIG. 1, or they may be made from any light weight material such as plastic foam as shown in FIG. 2. The connecting thread may extend loosely through the diameter of the balls so that each ball is free to slide on the thread in the form shown. The thread 12 may also be elastic if desired. A stop member such as the ring 14 may be provided on the end of the thread to keep the balls from sliding off. 
     The other end of the thread 12 is positively anchored within the tube as by being connected to an anchoring post 15 which extends across the inside of the tube. The stop ring 14 may be easily removable to permit different balls to be exchanged, if desired. The balls may have a message printed on the outside thereof or otherwise decorated, if desired. 
     The open end of the tube may be provided with a closure cap 16 which will retain the balls in the tube during storage, as shown by dotted lines in FIG. 1. The cap 16 may be connected to the thread in order to prevent the cap from being lost, or it may be completely removable from the apparatus and used only for storage. 
     In operation, the balls are all stored within the tube, and the cap 16 may be removed from the end thereof. The person using the toy will then blow on the inlet end 10a of the tube to blow the connected light weight balls 11 out the discharge end 10b of the tube. If the thread is made from elastic material, the balls will bounce up and down after being ejected from the discharge end of tube 10. The balls may be quickly and easily returned to the tube by holding the ring 14 to apply tension to the thread and tipping the inlet end of the tube down. The cap element 16 may have the connecting thread 12 extended therethrough and be positioned between the last ball 11 and the ring 14, as illustrated in FIG. 1. 
     The toy apparatus may be used as an instructional aide in addition to merely providing amusement as a toy. For example, in the teaching of young children, it is important for each child to learn that certain conduct is inappropriate, such as losing your temper and abusing others. The specific act of blowing the balls out of the tube produces the natural effect of &#34;letting off steam&#34;. The instructor would have a child who was being abusive to another child to use the apparatus to immediately stop his abusive conduct and blow into the tube to &#34;let off steam&#34;.