Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers . Fig. 11 Corner of Observation Room showing Bicycle Ergometer. This device isfitted with an electrical resistance controlled thorugh a rheostat, and a as to give an exact measure of the foot pounds of work accomplished. EXPERIMENTAL LABORATORY OF NEW YORK STATE COMMISSIONBODY TEMPERATURE RECORDER 177 From the Leeds & Northrup Company of Philadelphia wassecured a temperature recorder operated by changes in electricalresistance. This device was placed on the wall of the ObservationRoom where it
Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers . Fig. 11 Corner of Observation Room showing Bicycle Ergometer. This device isfitted with an electrical resistance controlled thorugh a rheostat, and a as to give an exact measure of the foot pounds of work accomplished. EXPERIMENTAL LABORATORY OF NEW YORK STATE COMMISSIONBODY TEMPERATURE RECORDER 177 From the Leeds & Northrup Company of Philadelphia wassecured a temperature recorder operated by changes in electricalresistance. This device was placed on the wall of the ObservationRoom where it has been used to give a continuous record of bodytemperature over an extended period of time (see Fig. 18). The. Fig. 18 View in Observation Room looking toward south wall. In the upper center ofthe picture is the Body Temperature Recorder. In the lower right corner Is theBicycle Ergometer, the controlling rheostat being located on the table. At theleft is seen a spirometer used to collect and measure exhaled air. thermometer bulb is connected to a galvanometer. As the tempera-ture changes the needle is deflected causing a readjustment in theposition of a travelling Wheatstone bridge. The recording pen ismoved in consequence, travelling on a horizontal track marked outin degrees Centigrade. A small motor operates the mechanism andturns out the co-ordinate paper with the inked record. The use ofthis device has been somewhat restricted by numerous operatingdifficulties. SUMMARY OF AIR CONDITIONS MAINTAINED IN OBSERVATION ROOM,DECEMBER 9, 1913, TO DECEMBER 5, 1914 In Table 9 is presented a chronological summary of the variousair conditions maintained in the experiments during the past year. 178 EXP
Size: 1870px × 1336px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidtransactions, bookyear1895
