Hayward Augustus Harvey [1824-93] was the inventor of the Harvey Process of tempering sheet steel for armor plate. Also involved with his father developing improvements in wood screws and the machinery for their production. In 1865 he founded the Continental Screw Company in Jersey City, which became the owner of Mr. Harvey’s first patents on screw machinery, covering the entire process of wood-screw making. After a short existence these works were bought out by the American Screw Company. From 1870 to 1890 Mr. Harvey was constantly at work designing new machinery for making screws, bolts, wire nails, washers, spiral springs and many other articles of that kind. The most notable of his inventions during this period is what is known as the “rolled thread” screw. Instead of cutting the screw thread into the wire, Mr. Harvey rolled or cold-forged the thread partly into, partly upon the surface of the wire itself. He gave to these screws a sharp central point, which, with the large thread and small neck, with incidental saving in the weight of wire, necessarily gave to the Harvey rolled screw such an immense advantage over all other screws that the great screw manufacturers of the world, the American Screw Company, of Providence, and the Nettlefolds, of England, were practically obliged to purchase the Harvey patents, which they did in 1886.
From the Historic American Engineering Record; RI-6 This was a complex of factory buildings of brick, timber, and iron construction dating from 1840 to 1873. These buildings were erected on land at the north end of Providence on land sloping upwards from the Moshassuc River. The principal buildings were three or four stories in height, mostly rectangular in form with gable roofs and protruding stair towers.
The first building was erected by the Eagle Screw Company, a long three story rectangular structure with a clerestory gable roof that ran parallel to Stevens Street. It had a protruding entrance and stair tower on the north side and a lesser stair tower on the west end. A gabled south wing was added soon after the original building was completed. Within ten years a second building was constructed 150 yards southeast of the original building. It was a four story gable roofed structure without a clerestory. It also had a stair tower on its north side and a privy tower on its west end. It had a connecting 2 story gabled roofed boiler house to its south.
These buildings served until 1860 when the Eagle Screw Company merged with the American Screw Company. Between 1865 and 1870 the south wing of building 1 (the original factory) was extensively altered and a mansard roof added. North of this, a new 3 story triangular shaped mill was constructed also with a mansard roof. Expansion again occurred in 1873 with the construction of the Bay State building, noted for its Lombard Italianate style and steeply pitched, hip roofed central tower. All these buildings were believed to have been designed by Alpheus Morse.Source: Art In Ruins: American Screw Company