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A big spring
338
Igcl,(~rl ~f Committee:
[J. F. I.,
In the Parker boiler the economizer principle has been applied iu a water--tube form ol7 construction, which embodies all the advantages of this well-known type, and to these advantages have been added self-cleaning features not possessed by older types. The essential features of forced circulation are broadly cov-ered in U. S. Patent No. 6o8.218. :lated August 2,I898; and in No. 628,6o6, dated July I i, I899. which is of less importance,. copies of which are appended to this original report. In conclusion, your committee deems it most remarkable that after the many years in which boilers have been made and in many forms in which they have appeared, each of which presented some novelty of construction or improvement, that there should be room for anything new in this well-worn field. An examination of the various types, beginning with the plain cylindrical boiler, the return tubular and last the water-tube, will show that, while great strides have been made on the score o f safety and economical performance, by decreasing the size of the heated unit and increasing the proportion of heating surface to grate, Ul) to the present there has been no radical change which would allow of the highest thermal efficiency. In recognition of the invention of an improved water-tube boiler by John C. Parker, and of his additions to our knowledge of the Art of Steam Generation, the Franklin Institute recommends to him the award of the Elliott Cresson Medal.* Adopted at the stated meeting of the Committee on Science and the Arts, held Wednesday, .March 2, 19o 4. A'I'TE.;T : WM. H. \\.ra~L, Scc'y. A BIG S P R I N G . No State in the U n i o n has larger or m o r e n u m e r o u s springs than Florida. Many of t h e m form good-sized s t r e a m s from the start, and some o f t h e m are navigable. The largest spring in the State, and one o{ the largest and probably the best k n o w n in the U n i t e d S,tates, is Silver Spring, which is located six miles east of Ocala. This spring forms the source of t h e Oklawaha River, a tributary of the St. Johns, and steamboats t r a v e r s i n g t h e river enter the spring basin, which has an area of several acres. The water is from 25 to ,3o feet deep and is wonderfully clear, appearing absolutely colorless. *Since the adoption (~f tile above report about 5o,oao H.P. of 1hese boilers have been placed in service. F.H.
Igcl,(~rl ~f Committee:
[J. F. I.,
In the Parker boiler the economizer principle has been applied iu a water--tube form ol7 construction, which embodies all the advantages of this well-known type, and to these advantages have been added self-cleaning features not possessed by older types. The essential features of forced circulation are broadly cov-ered in U. S. Patent No. 6o8.218. :lated August 2,I898; and in No. 628,6o6, dated July I i, I899. which is of less importance,. copies of which are appended to this original report. In conclusion, your committee deems it most remarkable that after the many years in which boilers have been made and in many forms in which they have appeared, each of which presented some novelty of construction or improvement, that there should be room for anything new in this well-worn field. An examination of the various types, beginning with the plain cylindrical boiler, the return tubular and last the water-tube, will show that, while great strides have been made on the score o f safety and economical performance, by decreasing the size of the heated unit and increasing the proportion of heating surface to grate, Ul) to the present there has been no radical change which would allow of the highest thermal efficiency. In recognition of the invention of an improved water-tube boiler by John C. Parker, and of his additions to our knowledge of the Art of Steam Generation, the Franklin Institute recommends to him the award of the Elliott Cresson Medal.* Adopted at the stated meeting of the Committee on Science and the Arts, held Wednesday, .March 2, 19o 4. A'I'TE.;T : WM. H. \\.ra~L, Scc'y. A BIG S P R I N G . No State in the U n i o n has larger or m o r e n u m e r o u s springs than Florida. Many of t h e m form good-sized s t r e a m s from the start, and some o f t h e m are navigable. The largest spring in the State, and one o{ the largest and probably the best k n o w n in the U n i t e d S,tates, is Silver Spring, which is located six miles east of Ocala. This spring forms the source of t h e Oklawaha River, a tributary of the St. Johns, and steamboats t r a v e r s i n g t h e river enter the spring basin, which has an area of several acres. The water is from 25 to ,3o feet deep and is wonderfully clear, appearing absolutely colorless. *Since the adoption (~f tile above report about 5o,oao H.P. of 1hese boilers have been placed in service. F.H.