Yale & Towne Cast Bronze Pin-tumbler Padlocks - 800 Series Models - Manufacture Date?

[Iowa Tom L]

The thumbnail attached titled "Additional Notes On The Yale 800 Series" was taken from page 125 of The National Locksmith Guide to Antique Padlocks (c) 1990 by Jack Roberts and may be of interest. It notes initial production dates of Nos. 830, 840, 850, 870, 872 and 937.

Pete Schifferli

Thank you Pete for the information and citation, I appreciate it. That gives me a place to start to investigate from and also nails down the year when the "Super Pin..." stamping began.

If someone has a photo of an 800 Series padlock with the "Patented..." stamping & an original key, I would still be interested seeing it posted.

It seems by 1908, Yale had changed the sizing of the 800 Series with 830 - 1.5", 840 - 1.75", 850 - 2", & 870 - 2.5".

Tom