Features
On Packing Metallic Rods
Practice at Scrap-Iron Target No. 10
With Rubber One Inch Thick Placed Between the Front Plate and Timber. July 28, 1862
The Machinists and Their Troubles
Bennett's Rubber With Iron Target
Practice at Iron Plate Target No. 15
With rubber placed between the plates and timber
Palmer's Pulley Block
1864
Another Year Closed
The People's College
Concerning Steam Boilers
Recent American Patents
Patent Claims
Issued from the United States Patent-Office
