F - Mech Eng,Light,Heat,Weapons – 16 – G
Patent
F - Mech Eng,Light,Heat,Weapons
16
G
198/100, 74/85
F16G 13/06 (2006.01) B65G 15/30 (2006.01)
Patent
CA 1122036
ABSTRACT OF THE DISCLOSURE A T-headed pin for use in rivetless chain, generally of the trolley conveyor type, is disclosed. The pin can entirely replace the conventional forged pin of any ordinary size and has superior design matching abilities. It is unique in that it is constructed entirely from a flat piece of sheet metal. Rec- tangular metal blanks with paired oppositely projecting tabs are provided. The blank is first curled to form the body of the pin with the tabs projecting endwise therefrom. In automated manu- facture of chain of the type mentioned in selected lengths, the links may be readily assembled with curled pins having tabs pro- jecting axially from both ends. The tabs may then be bent as required to complete the chain length. Alternatively, the tabs at one end only may be bent and lengths of chain may be readily assembled by inserting the other end of each pin into place and then bending the tabs at said other end. In the manufacture of the pins separately of chain assembly, the curled pin with pro- jecting tabs is supported between two members of the exact width required between the T-heads of the finished pin. Opposite curling tools then move toward the tabs and form them in a se- quence of steps which prevents or reduces tearing of the metal of the edges of the tabs where they merge into a curled portion forming the pin. Alternatively, the tabs may be bent prior to curling or partially bent prior to curling followed by a com- plete bending.
346012
George H. Riches And Associates
Rexnord Inc.
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