|Place:||Foxboro (MA), USA|
|Person:||Bristol, Edgar H.|
|Internal Links:||Planimeter, Foxboro Planimeter|
|Link to the patent office:|
|US1314463 (espacenet), US1314463 (uspto)|
Filing date: Jul 26, 1915
Issue date: Aug 26, 1919
This invention relates to an apparatus to be used in reading, interpreting or otherwise procuring information from chart records and the like, as for example chart records of recording pressure gages, temperature gages, pyrometers or other instruments.
Among other objects the invention is intended to provide means for ascertaining average pressures, temperatures or the like from records indicating variations in pressure temperature or the like during given periods of time.