Here is a copper cocktail shaker marked “Jos. Heinrichs, New York, Pat. Feb. 22, 1910”. It measures approximately 9 inches tall.
The top cap of the shaker has a machined tooled decorative banding. The spout cap is attached with a chain which looks like brass to me. The spout cap goes on and comes off easily. There is an internal strainer at the spout opening.
I’ve written a blog post on Joseph Heinrichs which includes the patent image for this shaker. You can find it here: https://queenofsienna.wordpress.com/category/jos-heinrichs/
This shaker is available for sale at my Etsy shop. Etsy.com/shop/queenofsienna