Needle and pin making – Needle making – Processes
Patent
1988-07-22
1989-12-05
Rosenbaum, Mark
Needle and pin making
Needle making
Processes
163 2, 264154, B21G 112
Patent
active
048846198
ABSTRACT:
A method for the production of bamboo-made knitting sticks provided with a gauge scale comprises the steps of processing a bamboo material into a rod of a round or quadratic shape in cross-section, linearly providing a groove of a concave shape in cross-section in a central surface of said rod, inserting into a bonding to said groove a scale sheet formed of paper, synthetic resin or metal and bearing length readings in cm or mm, casting and curing transparent synthetic resin in said groove to seal said scale sheet in said groove, and finish-processing the surface of the cured synthetic resin to make it uniformly contiguous to the surface of said bamboo material for a knitting stick without any step therebetween and make the circumference of said knitting stick complete, whereby said scale is seen through the cast and cured transparent synthetic resin.
REFERENCES:
patent: 2396412 (1946-03-01), Donisthorpe
patent: 2436371 (1948-02-01), Amidon
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