- Email: [email protected]
Employees in the Krupp steel-works
464
Notes a~zd Comments.
[J. F. I.,
dead plates on either side of the retort. H i s first claim is as follows : (i) In a f u r n a c e t h e c o m b i n a t i o n of a fire-box of an elongated, horizontally-disposed fuel retort, dead plates u p o n each side.of the retort, said r e t o r t a n d d e a d plates s e r v i n g to afford a sealed space b e n e a t h t h e fire-box and retort, t u y e r e o p e n i n g s provided along the l o n g i t u d i n a l sides of the retort, and affording c o m m u n i c a t i o n b e t w e e n t h e firebox and the space b e n e a t h the s a m e and m e a n s for forcing air u n d e r pressure into t h e space b e n e a t h the fire-box, s u b stantially as described. In v i e w Of the fact t h a t Mr. E v a n W i l l i a m J o n e s has done such g o o d work in b r i n g i n g o u t the d e s i g n of u n d e r f e e d stoker u n d e r consideration, and in v i e w of the s i m p l i c i t y of the device from a mechanical s t a n d p o i n t , b o t h in c o n s t r u e tion and operation, we r e c o m m e n d that the J o h n S c o t t L e g a c y P r e m i u m and Medal be a w a r d e d to him. A d o p t e d at the s t a t e d m e e t i n g of the C o m m i t t e e on Science and the Arts, held W e d n e s d a y , F e b r u a r y 3, ~9o4. Attest: WM. H. WAHL, Secretary. M A G N E T I T E ARC LAMP. C. P. Steinmetz bas discovered t h a t magnetite, t h e black oxide of iron, is suitable for u s e a s an electrode in a n arc lamp. F r o m investigations w h i c h have been made with different materials, it appears t h a t t h e arc flame issues from t h e negative terminal, a n d s t r i k i n g the positive produces heat. If t h e positive electrode c a n n o t convey t h e heat away fast enough, it becomes hot, as in t h e case of the carbon arc. F o r this reason t h e flame-coloring sub. stances are introduced into the positive electrode in t h e Bremer a n d o t h e r lamps. I n the m a g n e t i t e lamp t h e positive electrode is a copper segment, which is of such size t h a t it does not get too hot, and therefore does not wear away, forming a p e r m a n e n t part of the lamp. E M P L O Y E E S IN T H E K R U P P S T E E L - W O R K S . United States Consul-General Richard G u e n t h e r , Frankfort, Germany, reports, u n d e r date of July 2Ist, t h a t , according to the published s t a t e m e n t of the K r u p p Work.% t h e total n u m b e r of persons employed by the firm on April I, I9o4, including 4,19° officials, was 45,289. Of these the cast-steel works at Essen employed 25,o4t ; t h e Gruson W o r k s at Buckau, 3,329 ; t h e G e r m a n i a shipbuilding yard at Kiel, 2,81i ; t h e coal mines, 7,877 ; the iron mines, etc., 6,23I persons.
Notes a~zd Comments.
[J. F. I.,
dead plates on either side of the retort. H i s first claim is as follows : (i) In a f u r n a c e t h e c o m b i n a t i o n of a fire-box of an elongated, horizontally-disposed fuel retort, dead plates u p o n each side.of the retort, said r e t o r t a n d d e a d plates s e r v i n g to afford a sealed space b e n e a t h t h e fire-box and retort, t u y e r e o p e n i n g s provided along the l o n g i t u d i n a l sides of the retort, and affording c o m m u n i c a t i o n b e t w e e n t h e firebox and the space b e n e a t h the s a m e and m e a n s for forcing air u n d e r pressure into t h e space b e n e a t h the fire-box, s u b stantially as described. In v i e w Of the fact t h a t Mr. E v a n W i l l i a m J o n e s has done such g o o d work in b r i n g i n g o u t the d e s i g n of u n d e r f e e d stoker u n d e r consideration, and in v i e w of the s i m p l i c i t y of the device from a mechanical s t a n d p o i n t , b o t h in c o n s t r u e tion and operation, we r e c o m m e n d that the J o h n S c o t t L e g a c y P r e m i u m and Medal be a w a r d e d to him. A d o p t e d at the s t a t e d m e e t i n g of the C o m m i t t e e on Science and the Arts, held W e d n e s d a y , F e b r u a r y 3, ~9o4. Attest: WM. H. WAHL, Secretary. M A G N E T I T E ARC LAMP. C. P. Steinmetz bas discovered t h a t magnetite, t h e black oxide of iron, is suitable for u s e a s an electrode in a n arc lamp. F r o m investigations w h i c h have been made with different materials, it appears t h a t t h e arc flame issues from t h e negative terminal, a n d s t r i k i n g the positive produces heat. If t h e positive electrode c a n n o t convey t h e heat away fast enough, it becomes hot, as in t h e case of the carbon arc. F o r this reason t h e flame-coloring sub. stances are introduced into the positive electrode in t h e Bremer a n d o t h e r lamps. I n the m a g n e t i t e lamp t h e positive electrode is a copper segment, which is of such size t h a t it does not get too hot, and therefore does not wear away, forming a p e r m a n e n t part of the lamp. E M P L O Y E E S IN T H E K R U P P S T E E L - W O R K S . United States Consul-General Richard G u e n t h e r , Frankfort, Germany, reports, u n d e r date of July 2Ist, t h a t , according to the published s t a t e m e n t of the K r u p p Work.% t h e total n u m b e r of persons employed by the firm on April I, I9o4, including 4,19° officials, was 45,289. Of these the cast-steel works at Essen employed 25,o4t ; t h e Gruson W o r k s at Buckau, 3,329 ; t h e G e r m a n i a shipbuilding yard at Kiel, 2,81i ; t h e coal mines, 7,877 ; the iron mines, etc., 6,23I persons.