| NON ROTATIVE. | ROTATIVE. | |||||
| WORTH- | CORNISH. | HOLLY. | LOW | HIGH | ||
| INGTON. | PRESSURE. | PRESSURE. | ||||
| Louisville, Ky. | { | — | 44189515 | — | — | — |
| { | — | 45544384 | — | — | — | |
| { | — | — | — | 56004900 | — | |
| Brooklyn, N. Y. | { | — | — | — | 59550000 | — |
| { | — | — | — | 68378000 | — | |
| Albany, N. Y. | { | — | — | — | — | — |
| { | — | — | — | — | — | |
| Toronto, Canada | { | 38477030 | — | — | — | — |
| { | 38726890 | — | — | — | — | |
| Toledo, O. | 36399973 | — | — | — | — | |
| Boston; high service | 51063000 | — | — | — | — | |
| Charleston, Mass. | 52845400 | — | — | — | — | |
| Columbus, O. | — | — | 28758135 | — | — | |
| Chicago, north side | — | — | — | 52956684 | — | |
| Chicago, west side | — | — | — | — | — | |
| Phila., Schuylkill | { | — | 24342000 | — | — | — |
| { | — | 35360000 | — | — | — | |
| { | 39000000 | — | — | — | — | |
| Phila., Belmont | { | 37900000 | — | — | — | — |
| { | 44870000 | — | — | — | — | |
| Phila., Delaware | — | — | — | — | 39000000 | |
| Phila., Roxborough | 38280000 | 36280000 | — | — | — | |
| Phila., Frankfort | 27000000 | — | — | — | — | |
| Lawrence, Mass. | — | — | — | — | — | |
| Dayton, O. | — | — | 15000000 | — | — | |
| Cleveland, O. | { | 42397185 | 30361497 | — | — | — |
| { | 31925636 | — | — | — | ||
| Lynn, Mass. | — | — | — | — | — | |
| Pawtucket, R. I. | — | — | — | — | — | |
| Lowell, Mass. | 59112831 | — | — | — | — | |
| { | — | — | — | — | 44304907 | |
| Cincinnati, O. | { | — | — | — | 38014283 | 38953517 |
| { | — | — | — | — | 45886944 | |
| COMPOUND. | MISCELLANEOUS. | |||
| LEAVITT. | MISCELLANEOUS. | |||
| Louisville, Ky. | { | — | — | 20280502[2] |
| { | — | — | 19572536 | |
| { | — | — | — | |
| Brooklyn, N. Y. | { | — | — | — |
| { | — | — | — | |
| Albany, N. Y. | { | — | 70991413 | — |
| { | — | 70327595 | — | |
| Toronto, Canada | { | — | — | — |
| { | — | — | — | |
| Toledo, O. | — | — | — | |
| Boston; high service | — | — | — | |
| Charleston, Mass. | — | — | — | |
| Columbus, O. | — | — | — | |
| Chicago, north side | — | — | — | |
| Chicago, west side | — | 58808495 | — | |
| Phila., Schuylkill | { | — | 49726000 | — |
| { | — | 55633000 | — | |
| { | — | — | — | |
| Phila., Belmont | { | — | — | — |
| { | — | — | — | |
| Phila., Delaware | — | — | — | |
| Phila., Roxborough | — | — | 28380000[3] | |
| Phila., Frankfort | — | 57160000 | — | |
| Lawrence, Mass. | 98583176 | — | — | |
| Dayton, O. | — | — | — | |
| Cleveland, O. | { | — | 29558769 | — |
| { | — | — | ||
| Lynn, Mass. | 92843506 | — | — | |
| Pawtucket, R. I. | — | — | 96046816[4] | |
| Lowell, Mass. | — | 76108012 | — | |
| { | — | — | — | |
| Cincinnati, O. | { | — | — | 21665474[5] |
| { | — | — | — | |
Remarks.—
[2] Blake pump;
[3] Knowles;
[4] Corliss;
[5] Low pressure, direct acting.
The term, duty of a pumping engine, is a conventional one, used by engineers to measure the relative merits of performance, or effective work, expressed by the ratio of product in foot pounds of the weight water into the height it is lifted, to one hundred pounds of the coal consumed to lift the water. The following tables of expert trials are taken from “Manual for Engineers and Steam Users,” by John W. Hill, M. E. (1878), with a few additions:
PERFORMANCE OF PUMPING ENGINES.