20) 
ig. 33. 
r, 34. 
. 35. 
. 36. 
5 Bc 
ig. 38. 
Fig. 
Fig. 
39. 
40. 
ig. 40a 
ig. 41. 
Fig. 
43: 
r, 44, 
. 45. 
. 46. 
47. 
. AS. 
42. 
5 4b). 
ig. 50. 
ig. 51. 
Be. 
, BB. 
g. 5A. 
5D. 
_ 56. 
, Bi. 
58. 
59. 
. 60. 
pacts 
. 62. 
Oo: 
. 64. 
. 65. 
ig. 66. 
g. 67. 
. 68. 
g. 69. 
5 (AO) 
ig. 71. 
ANNUAL REPORT 
Spindle crusher, Gates type. . Susp eu Pe 
Diagram illustrating the aperation oh Guisitne role e 
Diagram illustrating the angle of nip of rolls... Sic pene, anaes 
Intermediate rolls, with feed rolls, for ?44nch matecatee CE Ray nn i 
Three-high rolls, of the Edison ‘Bontlnad Cement Company. .......... 
Disintegrator of the hinged-hammer type,.as made by Wiiliams..... 
Williams pulverizer, showing hinged hammers or flails, and grating. .. 
Cross-sectionmotm@lemtpraail| Peper sree anne teary evan hae 
Ball-mill’crosstsectrom. sapteaite citer eae Cae ee reer 
View of a ball-mill, as erected by the Gates: Iron Works........... 
Tule mille. sie se Rios ep Gtet tara oa erate vee ca cee cee aa 
Diagram illustrating action of stb mill, after Fischer. . 
Grittin mill’ SCrOssss CCbIONN ian as oh teenie eu nea Uae ae ees ete 
Curve, showing rate of reduction of quartz in fine grinding. ......... 
Rotary kiln as constructed by the Allis-Chalnrers Company........ 
Diagram, showing method of feeding a rotary kiln, with dry powdered 
GUNMAN OEM Me eee Shoo abolo ema lbs Jbob dacs 5 LR AbeT pcos ind Ws hae 
Rotary cement kiln, as constructed by the Bomnot Co............. 
View of two rotary kilns, at the furnace end, showing the pipes 
ROU A, WANE WS HNEUNES SUYHONEC, ooncconcccascovacgsovocncvee 
View along the side of a rotary kiln, showing the coal-dust storage 
tank, and pipe through which the dust is being blown into the fur- 
nace. The cement-batch tanks in the distance at the other end of 
thre’ kein 20 27 See Aa ie ae ness re cere ye tgs aes AN RN PN 
Cross-section of fixed-erate gas producer. )....-2.4-....... 4.2055. 
Opticalspyrometernoinuhea\\ ate Tati) Caen te ene ne 
ANN INERTIA WOURIAY GUM er COON, os soe0ccsscccoocenssvovuecucs 
The Wentz vertical clinker cooler....... ac Diet 2a oan eile Cure An ROTEL Coa 
The Galschioet grate cooler for cement clinker. . 
The double-jet dust-coal firing system, proposed by IBaliscrn.. 
Diebzschuverticalacelne nm tpkeli eee eee ene ine 
The system of the aero pulverizer, applied to coal grinding, and di- 
AH NANONIR ON GHG NUNS 6 Goon osnasdeunednoosesiooodosoodous 
General ground plan of a Portland cement works, showing sequence 
OfemechramiCalletmecytinae ltarewe eae ie eae eer 
View of the Alma Portland cement plant at Wellston, Ohie........ 
View of the Castalia Portland cement plant, at Castalia, Ohio...... 
View of the Lehigh Portland cement plant, at Wellston, Ohio...... 
Curves, showing heat evolved in setting, as observed in four typical — 
AIMeTICAN) CEMENtSa cima can cen tame ea anon ae aie one ae 
Fairbanks tensile strength cement testing machine...... 
Amsler-Laffon machine for crushing test. . ; 
Portable machine for crushing large eomennette Goes. re 
Mold and die in which the correct consistency of tari) coment 
concrete mixtures is determined; water must begin to leak out 
at issue-holes, after certain number of blows, from standard ham- 
Steinbrueck mixer for preparing cement.mixtures for test.......... 
Boehme hammer,for compacting cement in molds with uniform den- 
ETL IN eT RE MERE RC ERE cca ere meee Gono S Hind DIE LLO 8 Aolore aididha'b 
Bauschinger apparatus for determining constancy of volume....... 
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