Multistyli recording systems
AssigneeBell & Howell Company
InventorJohn P. Ruffell
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for recording information with a reciprocating stylus assembly provide a mass which preferably corresponds to the mass of the stylus assembly. The stylus assembly and the provided mass are jointly reciprocated in phase opposition to each other, whereby stylus assembly vibrations are practically eliminated and the recording system is dynamically balanced.
Claims28
In a method of recording information with a stylus assembly in a recording area, the improvement comprising in combination the steps of:
- providing a mass;
- forming an eccentric in two halves and minimizing any force couple between said two halves by arranging said two halves immediately adjacent to each other;
- reciprocating the stylus assembly relative to the recording area with the aid of one of said two halves;
- reciprocating said mass in phase opposition to the reciprocating stylus assembly with the aid of the other of said two halves;
- and
- dynamically balancing the reciprocating stylus assembly with the reciprocating mass.
In a method of recording information with a stylus assembly in a recording area, the improvement comprising in combination the steps of:
- providing a counterweight of a mass corresponding to the mass of the stylus assembly;
- forming an eccentric in two halves and minimizing any force couple between said two halves by arranging said two halves immediately adjacent to each other;
- reciprocating the stylus assembly relative to the recording area with the aid of one of said two halves;
- reciprocating the counterweight in phase opposition to the reciprocating stylus assembly with the aid of the other of said two halves;
- and
- dynamically balancing the reciprocating stylus assembly with the reciprocating counterweight.
In a method of recording information with a stylus assembly, the improvement comprising in combination the steps of:
- providing a mass;
- forming an eccentric in two halves and minimizing any force couple between said halves by arranging said two halves immediately adjacent to each other;
- coupling one of said two halves to the stylus assembly and coupling the other of said two halves to said mass;
- and
- jointly reciprocating the stylus assembly and said mass in phase opposition to each other by rotating said eccentric.
In a method of recording information with a stylus assembly, the improvement comprising in combination the steps of:
- forming an eccentric in two halves and minimizing any force couple between said two halves by arranging said two halves immediately adjacent to each other;
- providing a counterweight of a mass corresponding to the mass of the stylus assembly;
- coupling one of said two halves to the stylus assembly and coupling the other of said two halves to the counterweight;
- and
- jointly reciprocating with said eccentric the stylus assembly and the counterweight in phase opposition to each other.
In apparatus for recording information with a stylus assembly in a recording area, the improvement comprising in combination:
- first means for reciprocating the stylus assembly relative to the recording area including an eccentric composed of two immediately adjacent halves and means for coupling one of said halves to the stylus assembly;
- and
- means for dynamically balancing the reciprocating stylus assembly including a counterweight and means coupled to the other of said two halves for reciprocating the counterweight in phase opposition to the reciprocating stylus assembly.
In apparatus for recording information with a stylus assembly, the improvement comprising in combination:
- a counterweight;
- an eccentric composed of two immediately adjacent halves;
- means for jointly reciprocating the stylus assembly and the counterweight in phase opposition to each other, including means for coupling one of said halves to said stylus assembly, means for coupling the other of said halves to said counterweight, and means for rotating said eccentric.
In apparatus for recording information with a stylus assembly in a recording area, the improvement comprising in combination:
- an eccentric comprising two immediately adjacent halves one of which is coupled to the stylus assembly for reciprocating the stylus assembly relative to the recording area;
- and
- means for dynamically balancing the reciprocating stylus assembly including a counterweight and means for coupling said two halves to each other at an extreme angular displacement relative to each other, and means for coupling the other of said two halves to the counterweight for reciprocating the counterweight in phase opposition to the reciprocating stylus assembly.
In apparatus for recording information with a stylus assembly in a recording area, the improvement comprising in combination:
- a shaft;
- means for rotating said shaft;
- an eccentric composed of two immediately adjacent halves located on said shaft, with one of said halves coupled to the stylus assembly for reciprocating the stylus assembly relative to the recording area during rotation of the shaft;
- and
- means for dynamically balancing the reciprocating stylus assembly including a counterweight and means for coupling said two halves to each other at an extreme angular displacement relative to each other, and means for coupling the other of said two halves to the counterweight for reciprocating the counterweight in phase opposition to the reciprocating stylus assembly during rotation of the shaft.
Dependencies are inferred from the claim text.