Don't use the scraper blades you'll find in the hardware or paint sections of stores like Walmart, K-Mart Home Depot, Lowes etc, they're not suitable for shaving. Walgreens carries the GEM blades made by Personna in the shaving section and they are very good blades, easy to find and relatively inexpensive. Other places carry Treet, GEM Blue Star and PAL brand shaving blades. These work as well, but they are made of carbon steel and tend to rust and lose their edge very quickly, which is what you're experiencing with those old blades you have. Or you can get in on the group buy of the Ted Pellas if you're willing to wait awhile.
The Ever-ready 1914 is an outstanding razor.
Tom--- Founding member of The ALPHA Team!
If laughter is the best medicine then why do sick people go to doctors instead of comedians?