Erik Valdemar Oberg, born 1881, died 1951.

• MATHEMATICAL TABLESPRINCIPAL METHODS AND FORMULAS IN ARITHMETIC AND ALGEBRALOGARITHMS AND LOGARITHMIC TABLESAREAS AND VOLUMESSOLUTION OF TRIANGLES AND TRIGONOMETRICAL TABLESGEOMETRICAL PROPOSITIONS AND PROBLEMSPRINCIPAL METHODS AND FORMULAS IN THEORETICAL MECHANICSSTRENGTH OF MATERIALSRIVETING AND RIVETED JOINTSSTRENGTH AND PROPERTIES OF STEEL WIRESTRENGTH AND PROPERTDSS OF WIRE ROPEFORMULAS AND TABLES FOR SPRING DESIGNTORSIONAL STRENGTH — SHAFTINGFRICTIONPLAIN, ROLLER AND BALL BEARINGSKEYS AND KEYWAYSCLUTCHES AND COUPLINGSFRICTION BRAKESCAM DESIGN AND CAM MILLINGSPUR GEARINGBEVEL GEARINGWORM GEARINGSPIRAL AND HERRINGBONE GEARING. EPICYCLIC GEARING. BELTS AND PULLEYS — MACHINE TOOL DRIVESROPE TRANSMISSIONTRANSMISSION CHAIN AND CHAIN DRIVESCRANE CHAIN AND HOOKS. BOLTS, NUTS, SCREWS, WRENCHES, HANDLES, HANDWHEELS AND OTHER MACHINE DETAILSSPEEDS AND FEEDS FOR MACHINE TOOLS — TOOL GRINDINGAUTOMATIC SCREW MACHINE PRACTICETAPPING AND THREADINGLUBRICANTS FOR MACHINING OPERATIONSRUNNING, SHRINKAGE AND FORCED FIT ALLOWANCESMEASURING INSTRUMENTS AND GAGING METHODSCHANGE GEARS FOR SPIRAL MILLING — LEADS AND CORRESPONDING ANGLESMILLING MACHINE INDEXINGJIGS AND FIXTURESGRINDING AND GRINDING WHEELS — POLISHING AND LAPPINGPUNCHES, DIES AND PRESS WORK — DROP-FORGING DIESBROACHES AND BROACHING OPERATIONSCLASSIFICATION, TESTING AND APPLICATION OF FILESSCREW THREAD SYSTEMS AND THREAD GAGESTAPS AND THREADING DIESMILLING CUTTERSREAMERSTWIST DRILLS, COUNTERBORES AND BORING BARSHEAT-TREATMENT OF STEEL — HARDENING, TEMPERING AND ANNEALINGTESTING THE HARDNESS OF METALSPRINCIPLES OF IRON AND STEEL MANUFACTUREFOUNDRY AND PATTERN SHOP PRACTICEEXTRUSION OF METALSDIE CASTINGFORGE SHOP EQUIPMENTFORGE SHOP WELDING METHODSAUTOGENOUS WELDINGWELDING WITH THERMITELECTRIC WELDINGSOLDERING AND BRAZINGETCHING AND ETCHING FLUIDSCOLORING METALSHORSEPOWER REQUIRED FOR MACHINE TOOLS AND FORGING MACHINERY — ELECTRIC MOTOR DRIVECARE OF ELECTRICAL MACHINERY — DYNAMO AND MOTOR TROUBLESPROPERTIES AND WEIGHTS OF MATERIALSCOMPOSITION OF ALLOYSINFORMATION RELATING TO HEAT — COMPARISON OF THERMOMETER SCALES. PNEUMATICS — AIR COMPRESSION — FLOW OF AIRWATER PRESSURES AND FLOW OF WATERPIPE AND PIPE FITTINGSLUTES AND CEMENTSWEIGHTS AND MEASURESMETRIC SYSTEM OF MEASUREMENTS AND CONVERSION TABLESMANUFACTURING PLANT APPRAISALDRAWING, TRACING AND BLUEPRINT PAPERSPRINCIPAL PATENT LAW REGULATIONSINDEX

Erik Valdemar Oberg, born 1881, died 1951.

• MATHEMATICAL TABLESPRINCIPAL METHODS AND FORMULAS IN ARITHMETIC AND ALGEBRALOGARITHMS AND LOGARITHMIC TABLESAREAS AND VOLUMESSOLUTION OF TRIANGLES AND TRIGONOMETRICAL TABLESGEOMETRICAL PROPOSITIONS AND PROBLEMSPRINCIPAL METHODS AND FORMULAS IN THEORETICAL MECHANICSSTRENGTH OF MATERIALSRIVETING AND RIVETED JOINTSSTRENGTH AND PROPERTIES OF STEEL WIRESTRENGTH AND PROPERTDSS OF WIRE ROPEFORMULAS AND TABLES FOR SPRING DESIGNTORSIONAL STRENGTH — SHAFTINGFRICTIONPLAIN, ROLLER AND BALL BEARINGSKEYS AND KEYWAYSCLUTCHES AND COUPLINGSFRICTION BRAKESCAM DESIGN AND CAM MILLINGSPUR GEARINGBEVEL GEARINGWORM GEARINGSPIRAL AND HERRINGBONE GEARING. EPICYCLIC GEARING. BELTS AND PULLEYS — MACHINE TOOL DRIVESROPE TRANSMISSIONTRANSMISSION CHAIN AND CHAIN DRIVESCRANE CHAIN AND HOOKS. BOLTS, NUTS, SCREWS, WRENCHES, HANDLES, HANDWHEELS AND OTHER MACHINE DETAILSSPEEDS AND FEEDS FOR MACHINE TOOLS — TOOL GRINDINGAUTOMATIC SCREW MACHINE PRACTICETAPPING AND THREADINGLUBRICANTS FOR MACHINING OPERATIONSRUNNING, SHRINKAGE AND FORCED FIT ALLOWANCESMEASURING INSTRUMENTS AND GAGING METHODSCHANGE GEARS FOR SPIRAL MILLING — LEADS AND CORRESPONDING ANGLESMILLING MACHINE INDEXINGJIGS AND FIXTURESGRINDING AND GRINDING WHEELS — POLISHING AND LAPPINGPUNCHES, DIES AND PRESS WORK — DROP-FORGING DIESBROACHES AND BROACHING OPERATIONSCLASSIFICATION, TESTING AND APPLICATION OF FILESSCREW THREAD SYSTEMS AND THREAD GAGESTAPS AND THREADING DIESMILLING CUTTERSREAMERSTWIST DRILLS, COUNTERBORES AND BORING BARSHEAT-TREATMENT OF STEEL — HARDENING, TEMPERING AND ANNEALINGTESTING THE HARDNESS OF METALSPRINCIPLES OF IRON AND STEEL MANUFACTUREFOUNDRY AND PATTERN SHOP PRACTICEEXTRUSION OF METALSDIE CASTINGFORGE SHOP EQUIPMENTFORGE SHOP WELDING METHODSAUTOGENOUS WELDINGWELDING WITH THERMITELECTRIC WELDINGSOLDERING AND BRAZINGETCHING AND ETCHING FLUIDSCOLORING METALSHORSEPOWER REQUIRED FOR MACHINE TOOLS AND FORGING MACHINERY — ELECTRIC MOTOR DRIVECARE OF ELECTRICAL MACHINERY — DYNAMO AND MOTOR TROUBLESPROPERTIES AND WEIGHTS OF MATERIALSCOMPOSITION OF ALLOYSINFORMATION RELATING TO HEAT — COMPARISON OF THERMOMETER SCALES. PNEUMATICS — AIR COMPRESSION — FLOW OF AIRWATER PRESSURES AND FLOW OF WATERPIPE AND PIPE FITTINGSLUTES AND CEMENTSWEIGHTS AND MEASURESMETRIC SYSTEM OF MEASUREMENTS AND CONVERSION TABLESMANUFACTURING PLANT APPRAISALDRAWING, TRACING AND BLUEPRINT PAPERSPRINCIPAL PATENT LAW REGULATIONSINDEX

Erik Valdemar Oberg, born 1881, died 1951.

• MATHEMATICAL TABLESPRINCIPAL METHODS AND FORMULAS IN ARITHMETIC AND ALGEBRALOGARITHMS AND LOGARITHMIC TABLESAREAS AND VOLUMESSOLUTION OF TRIANGLES AND TRIGONOMETRICAL TABLESGEOMETRICAL PROPOSITIONS AND PROBLEMSPRINCIPAL METHODS AND FORMULAS IN THEORETICAL MECHANICSSTRENGTH OF MATERIALSRIVETING AND RIVETED JOINTSSTRENGTH AND PROPERTIES OF STEEL WIRESTRENGTH AND PROPERTDSS OF WIRE ROPEFORMULAS AND TABLES FOR SPRING DESIGNTORSIONAL STRENGTH — SHAFTINGFRICTIONPLAIN, ROLLER AND BALL BEARINGSKEYS AND KEYWAYSCLUTCHES AND COUPLINGSFRICTION BRAKESCAM DESIGN AND CAM MILLINGSPUR GEARINGBEVEL GEARINGWORM GEARINGSPIRAL AND HERRINGBONE GEARING. EPICYCLIC GEARING. BELTS AND PULLEYS — MACHINE TOOL DRIVESROPE TRANSMISSIONTRANSMISSION CHAIN AND CHAIN DRIVESCRANE CHAIN AND HOOKS. BOLTS, NUTS, SCREWS, WRENCHES, HANDLES, HANDWHEELS AND OTHER MACHINE DETAILSSPEEDS AND FEEDS FOR MACHINE TOOLS — TOOL GRINDINGAUTOMATIC SCREW MACHINE PRACTICETAPPING AND THREADINGLUBRICANTS FOR MACHINING OPERATIONSRUNNING, SHRINKAGE AND FORCED FIT ALLOWANCESMEASURING INSTRUMENTS AND GAGING METHODSCHANGE GEARS FOR SPIRAL MILLING — LEADS AND CORRESPONDING ANGLESMILLING MACHINE INDEXINGJIGS AND FIXTURESGRINDING AND GRINDING WHEELS — POLISHING AND LAPPINGPUNCHES, DIES AND PRESS WORK — DROP-FORGING DIESBROACHES AND BROACHING OPERATIONSCLASSIFICATION, TESTING AND APPLICATION OF FILESSCREW THREAD SYSTEMS AND THREAD GAGESTAPS AND THREADING DIESMILLING CUTTERSREAMERSTWIST DRILLS, COUNTERBORES AND BORING BARSHEAT-TREATMENT OF STEEL — HARDENING, TEMPERING AND ANNEALINGTESTING THE HARDNESS OF METALSPRINCIPLES OF IRON AND STEEL MANUFACTUREFOUNDRY AND PATTERN SHOP PRACTICEEXTRUSION OF METALSDIE CASTINGFORGE SHOP EQUIPMENTFORGE SHOP WELDING METHODSAUTOGENOUS WELDINGWELDING WITH THERMITELECTRIC WELDINGSOLDERING AND BRAZINGETCHING AND ETCHING FLUIDSCOLORING METALSHORSEPOWER REQUIRED FOR MACHINE TOOLS AND FORGING MACHINERY — ELECTRIC MOTOR DRIVECARE OF ELECTRICAL MACHINERY — DYNAMO AND MOTOR TROUBLESPROPERTIES AND WEIGHTS OF MATERIALSCOMPOSITION OF ALLOYSINFORMATION RELATING TO HEAT — COMPARISON OF THERMOMETER SCALES. PNEUMATICS — AIR COMPRESSION — FLOW OF AIRWATER PRESSURES AND FLOW OF WATERPIPE AND PIPE FITTINGSLUTES AND CEMENTSWEIGHTS AND MEASURESMETRIC SYSTEM OF MEASUREMENTS AND CONVERSION TABLESMANUFACTURING PLANT APPRAISALDRAWING, TRACING AND BLUEPRINT PAPERSPRINCIPAL PATENT LAW REGULATIONSINDEX