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- Link and Pin Coupler, Used by the Michigan Central Railroad, 1850-1900 - The basic link-and-pin coupler was a constant danger to workers on early American railroads. To couple two cars, a worker had to guide the link into the receiving slot and drop the pin in place, quickly moving his hands before the couplers made contact. Missing fingers were a mark of experience. Safer automatic couplers were mandated by federal law in 1893.
- 1850-1900
- Collections - Artifact
Link and Pin Coupler, Used by the Michigan Central Railroad, 1850-1900
The basic link-and-pin coupler was a constant danger to workers on early American railroads. To couple two cars, a worker had to guide the link into the receiving slot and drop the pin in place, quickly moving his hands before the couplers made contact. Missing fingers were a mark of experience. Safer automatic couplers were mandated by federal law in 1893.
- Fire Hose Nozzle with Coupler - Firefighters use hoses fitted with nozzles to douse destructive flames. Early nozzles, like this brass one, created a simple, straight stream of water. Improvements in nozzle design since the mid-1900s have controlled water flow and pressure -- optimizing a water stream's velocity and reach -- and created new dispersal patterns to help put out the fire.
- Collections - Artifact
Fire Hose Nozzle with Coupler
Firefighters use hoses fitted with nozzles to douse destructive flames. Early nozzles, like this brass one, created a simple, straight stream of water. Improvements in nozzle design since the mid-1900s have controlled water flow and pressure -- optimizing a water stream's velocity and reach -- and created new dispersal patterns to help put out the fire.
- General Electric Model AR 1304 Radio Coupler, 1919-1922 -
- 1919-1922
- Collections - Artifact
General Electric Model AR 1304 Radio Coupler, 1919-1922