Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
Harris Lake Henry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Parish and Bingham Co
Original Assignee
Parish and Bingham Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Parish and Bingham CofiledCriticalParish and Bingham Co
Application grantedgrantedCritical
Publication of GB189822611ApublicationCriticalpatent/GB189822611A/en
22,611. Lake, H. H., [Parish & Bingham Co.]. Oct. 27. Forging; stamping.-Steel sprocketwheels for bicycles are made from blanks A which are pressed cold between dies B, C adapted to compress the web to a greater extent than the rim ; the teeth having been formed by punching, the wheel is again pressed cold between dies D, E of the form shown, which round off the corners of the teeth. The cold - pressing causes surface - hardening and increased density of the parts, which is greater in the web than in the rim, and greater at the sides of the teeth than at their peripheral faces.
GB189822611D1898-10-271898-10-27Improvements relating to the Manufacture of Sprocket Wheels.
ExpiredGB189822611A
(en)
Hydraulic press for making briquettes in metal turnings or other compressible materials and capable of rapid transformation into a forging, stamping and stamping press