Mechanical guns and projectors – Spring – Elastic band
Patent
1975-01-06
1976-06-15
Pinkham, Richard C.
Mechanical guns and projectors
Spring
Elastic band
124 80, 2731065C, 124 22, 124 40, 124 41R, F41B 700
Patent
active
039630170
ABSTRACT:
A projectile launcher includes a housing formed of releasably secured longitudinal sections. The housing defines a bore extending fore-to-aft and including a spring-carrying compartment and a projectile discharge channel. A spring tube is anchored adjacent the forward end of the bore and extends rearwardly within the bore over a reaction guide pulley. A plunger is slidably disposed within the bore and includes a projectile impact portion slidably disposed within the projectile discharge channel. A cord is fastened at one end to the spring tube and at its other end to the plunger. A cocking aperture is provided in the plunger and is operable to receive a removable cocking bar. Rearward movement of the cocking bar when disposed within the cocking aperture causes the plunger to expand the spring in an energy-storing manner. A trigger mechanism is provided at the rear of the housing to retain the plunger and the spring tube in a cocked position. Activation of the trigger enables the spring tube to propel the plunger forwardly within the bore to advance and discharge a projectile located in the projectile discharge channel ahead of the plunger. The reaction pulley is disposed intermediate the ends of the spring tube and is arranged to contract when the trigger mechanism releases the plunger from a cocked position to propel the plunger forwardly, together with a projectile located ahead of the plunger and is also arranged to bend around the reaction guide pulley during forward travel of the plunger to exert rearward forces on the plunger to gradually brake the speed of the plunger.
REFERENCES:
patent: 310873 (1885-01-01), Bradley
patent: 408062 (1889-07-01), Adams
patent: 1571643 (1926-02-01), Renick
patent: 2053152 (1936-09-01), Kiesel
patent: 2760480 (1956-08-01), Carroll
patent: 3415239 (1968-12-01), Swett
patent: 3476100 (1969-11-01), Carbonneau
Browne William R.
Pinkham Richard C.
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