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Effects of Annealing Gray and Malleable Iron Bars in Copper

The Application of Powdered Coal to Malleable Annealing

Efficient Use of Pulverized Coal in Malleable Foundry Practice 277

Powdered Coal as a Fuel in the Foundry.....

Discussion-Use of Powdered Coal in Malleable Iron Found-

Melting in Air Furnace with Fuel Oil..

The Refining of Cupola Malleable Iron in the Electric Fur-

Relation Between Machining Qualities of Malleable Castings

and Physical Tests

A Note on Britain's Experimental Foundry..

Report of A. F. A. Committee on Specifications for Malleable

The Elimination of Strains in Iron Castings.

Discussion-Eliminating Strains in Iron Castings..

The Electric Furnace as an Adjunct to the Cupola..

The Side Blow Converter in the Iron Foundry..

Cerium in Cast Iron. . . . . .

Discussion-Cerium in Cast Iron..

Considerations Affecting Brass Melting in the Gray Iron Shop

Weeks' Electric Rotating Furnace as Applied to the Brass

Foundry Industry

The Care of Foundry Equipment..

The Economical Control and Handling of Patterns in a Large

How to Secure Best Results in Combining Hoisting Apparatus

with Molding Equipment

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Repairing the Broken Stern Post of the NORTHERN PACIFIC..

Progress in the Application of Electric Arc Welding.

A New Cutting Gas.....

Welding Castings of Different Metals and Different Sections.. 500

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List of Illustrations

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CHART SHOWING GROWTH IN MEMBERSHIP OF AMERICAN FOUNDRYMEN'S ASSOCIATION..

RELATION OF NUMPER OF APPRENTICES TO NUMBER OF SKILLED WORKMEN..

TYPICAL RECORD CARD USED IN UPGRADING SYSTEMS.

STANDARD CARBON-IRON CURVE..

FIG. 1-MICROGRAPH OF MALLEABLE IRON WHICH CONTAINS MORE THAN 20 PER

FIG. 2-CROSS-SECTION OF A MALI EABLE IRON BAR ANNEALED IN COPPER OXIDE

FIG. 3-MICROGRAPH OF OUTSIDE EDCE OF BAR SHOWN IN FIG. 2-NOTE PEARLITE

FIG. 4-SHOWS THE DIVIDING LINE BETWEEN A AND B FIG 2..

FIG. 5-MICROGRAPH FROM THE CENTER OF BAR, FIG. 2-NOTE THE LARGE PATCH

FIG. 6-CROSS-SECTION OF A GRAY-IRON BAR ANNEALED IN COPPER OXIDE PACKING... 266

FIG. 7-THIS SHOWS THE LINE BETWEEN 4 AND B, FIG. 6--DARK PORTIONS CON-

FIG. 3-STRUCTURE OF B AND C, FIG. 6, IS SHOWN AREA C HAS THE CHAR-

ACTERISTIC OF GRAY JRON.

FIG. 1-LONGITUDINAL SECTION A-4, FIG. 2, THROUGH ANNEALING FURNACE.......

FIG. 2-TRANSVERSE SECTION THROUGH ANNEALING FURNACE.

FIG. 3-VIEW ALONG TOPS OF ANNEALING FURNACES....

FIG. 1-DIAGRAM SHOWING MIXING ACTION IN PULVERIZED COAL BURNER.

FIG. 2-GENERAL ASSEMBLY OF BURNERS FOR AIR MELTING FURNACE..

FIG. 3-FRONT VIEW OF MELTING FURNACE AT ERIE, PA., SHOWING BURNER IN-

STALLED COMPLETE

FIG. 4-VIEW OF BURNER AND FAN DRIVF..

FIG. 5-OPERATING SIDE OF BURNER SHOWING LOCATION CONTROLS.

FIG. 6-TEMPERATURE RECORD OF MUFFLE ANNEALING OVEN.

FIG. 7-DIAGRAM OF FLAME IGNITION AND FORMATION....

FIG. 9-ARRANGEMENT OF TOP BLAST.....

8-DIAGRAM SHOWING COMPARATIVE ECONOMY OF PULVERIZED COAL BURNERS

AND HAND FIRING ON ANNEALING OVEN..

Fig. 1-RESULTS OBTAINED WITH TEST WEDGES OF LOW MANGANESE IRON.

FIG. 2-STRUCTURE OF CENTER OF TEST BAR AT 70 DIAMETERS.

FIG. 3-STRUCTURE OF RM OF TEST BAR AT 320 DIAMETERS.

FIG. 1-END VIEW OF MACHINABILITY TESTING DEVICE..

FIG. 2-DIAGRAM OF APPARATUS FOR DRILLING TEST..

FIG. 1-HIGH CHILL WHEEL WHICH I ANNEALED PROPERLY WOULD HAVE GREATER

STRENGTH AND DOUBLE THE MILEAGE...

FIG. 2-4-INCH BELOW CHILLED FACE OF OVERANNFALED CHIP OF CHILLED PART

FIG. 1-A DESIGN FOR A SIMPLE CRUCIBLE-TYPE NONFERROUS MELTING FURNACE.... 378

FIG. 2-EFFECT OF IMPROPER FIRING IN A CRUCIBLE MELTING FURNACE....

FIG. 1-WEEKS' ELECTRIC ROTATING BRASS FURNACE OF AN EARLY TYPE.....

FIG. 2-IMPROVED DESIGN OF ROTATING ELECTRIC BRASS FURNACE.

FIG. 3-A TYPICAL THREE FURNACE PLANT......

FIG. 1-THE WORK NOW HANDLED BY THIS CRANE FORMERLY HANDLED BY A JIB

CRANE-PRODUCTION WAS INCREASED FOUR TIMES BY USE OF THE CRANE

FIG. 2-CENTRAL BAY OF FOUNDRY SERVED BY CRANES ON HIGH AND Low RUN-

WAYS THE THREE CRANES OPERATING ON THE LOWER LEVEL ARE USED IN

CONNECTION WITH MOLDING

FIG. 8-MATERIAL STORAGE YARD OF FOUNDRY WHOSE INTERIOR IS SHOWN IN FIG.

2-MATERIALS ARE HANDLED BY THE CRANE AND MONORAIL HOIST SHOWN..... 414

FIG. 1-VIEW OF GRAY IRON FOUNDRY WITH COMPLETE MECHANICAL SAND HANDLING

FIG. 2-CONVEYOR UNDER FOUNDRY FLOOR FOR REMOVING USED SAND..

FIG 3-CLOSE-UP VIEW OF USED SAND CONVEYOR SHOWING HOPPER FROM FOUNDRY

FIG. 4-SCALPING OR ROUGHING SCREEN FOR PRELIMINARY SCREENING OF USED

FIG. 5-FINAL SCREEN AND CENTRIFUGAL TEMPERING MACHINE.

OVERHEAD SAND HOPPERS WHICH SUPPLY SAND TO MOLDERS AS

FIG. 7-INDIVIDUAL ÖVERHEAD SAND HOPPERS.

FIG. 8-TEMPERED SAND STORAGE BIN SHOWING CUTTING SAND FEEDERS.

FIG. 9-FLAT BELT CONVEYOR FOR DISTRIBUTING TEMPERED SAND.

FIG. 10-MAGNETIC SEPARATOR AND WASTE SAND CONVEYOR..

FIG. 1-CROSS-SECTION OF AN ELECTRIC HORN....

FIG. 2- CODE CALLING MECHANISM....

FIG. 3-THE ELECTRICAL CONNECTIONS FOR THE CALLING MECHANISM.

FIG. 1-NEAR VIEW OF STERNPOST SHOWING FRACTURE.

FIG. 2-FRACTURE CUT OUT LEAVING SPACE FOR THERMIT STEEL TO ENTER.

FIG. 3-WAX PATTERN APPLIED PREVIOUS TO BUILDING UP MOLD.

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