This is all I have, so if you have anything else post it up and fill in the blanks. I'd like to learn more about them.
1906- The Rock Island Tool Co., Rock Island Ill., recently organized, has taken over the business of the Jacobson Machine Mfg Co., Warren, Pa., and will manufacture a full line of vises and other tools. The company states that it expects to build next fall, but is at present occupying temporary foundry and machine shops and is in the market for foundry equipment, machine tools, electric motors and power plant equipment.
Another announcement:
The Jacobson Machine Mfg Co., of Warren, Pa, has completed all arrangements with a new corporation organized in Rock Island, Ill, incorporated as the Rock Island Tool Co., providing for the complete transfer of the Jacobson Machine Mfg. Co. vise business. The Jacobson people have built up a good trade on these automatic vises, and as they are taxing their capacity with gas and gasoline engine work they consider it advisable to divide the business in this way. The Jacobson Company will retain a considerable interest in the new concern, and as those engaged in the management of the new company are accustomed to manufacture of this kind the Jacobson vise business will be well take care of. The new concern expects to be under way by April1.
At some point they were bought by the Birtman Electric Company. Vises from this era had a label attached that read BIRTMAN ELECTRIC COMPANY, ROCK ISLAND DIVISION, ROCK ISLAND ILLINOIS.