1876 Centennial Exposition
The exposition featured many well-known items of today such as; Alexander Graham Bell's first telephone which was set up on opposite ends of Machinery Hall to demonstrate the transfer of human voice through wires, the Automatic telegraph system and electric pen by Thomas Edison, screw-cutting machines that drastically improved the production of screws and bolts from 8,000 to 100,000 a day, and a universal grinding machine by Brown & Sharpe Manufacturing Co.
A new technology on display were air-powered tools along with the mechanical calculator by George B. Grant. John A. Roebling's Sons & Co. also displayed their 5 ¾ inch diameter slice of cable that was going to be used for the Brooklyn Bridge. Besides machinery, visitors could also find new foods such as bananas, popcorn and Heinz ketchup.
1876 Centennial Exposition
The exposition featured many well-known items of today such as; Alexander Graham Bell's first telephone which was set up on opposite ends of Machinery Hall to demonstrate the transfer of human voice through wires, the Automatic telegraph system and electric pen by Thomas Edison, screw-cutting machines that drastically improved the production of screws and bolts from 8,000 to 100,000 a day, and a universal grinding machine by Brown & Sharpe Manufacturing Co.
A new technology on display were air-powered tools along with the mechanical calculator by George B. Grant. John A. Roebling's Sons & Co. also displayed their 5 ¾ inch diameter slice of cable that was going to be used for the Brooklyn Bridge. Besides machinery, visitors could also find new foods such as bananas, popcorn and Heinz ketchup.