Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1982-09-30
1984-04-03
Pinkham, Richard C.
Metal working
Method of mechanical manufacture
Assembling or joining
273 73A, 273 73D, A63B 5100, B23P 1102
Patent
active
044399081
ABSTRACT:
A method for stringing a racquet characterized by forming a linearly expansible pre-strung web having a plurality of rows of diamond shaped interstices and then stretching said web row-by-row along a linear axis of expansion by starting with the innermost rows of the web and proceeding symmetrically outwardly to the outermost rows of said web. As a final step, the linearly expanded web is laced to the head of a racquet. An apparatus for accomplishing the above method is characterized by an elongated base supporting a pair of carriages for reciprocal, colinear movement. A plurality of stretcher bars are supported by the base between the carriages to stretch the web row-by-row away from a central axis. Links are provided to selectively couple the stretcher bars to the carriages.
REFERENCES:
patent: 4118029 (1978-10-01), Septier
patent: 4149722 (1979-04-01), Yager
patent: 4163553 (1979-08-01), Renfro
Hickman Paul L.
Pinkham Richard C.
Schneider Matthew L.
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