Renseignements généraux

Nº de série

870

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

CAST IRON BASE & FRAME ASSEMBLY. BRONZE BEARINGS IN CAST IRON BEARING BLOCKS. INSULATED COPPER FIELD COILS WITH LAMINATED STEEL POLES. INSULATED COPPER ARMATURE WINDINGS OVER LAMINATED STEEL CORE WITH COPPER, MICA INSULATED COMMUTATOR. CAST IRON BRUSH SUPPORT WEB, BRASS BRUSH SUPPORT SHAFTS; CARBON BRUSHES WITH BRASS SPRINGS. BRUSH HOLDERS ARE PROBABLY AN ASBESTOS BASED MOLDED ASSEMBLY WITH INSULATED HARDWARE. CAST IRON SPEED CONTROL WHEEL. STEEL GEARS & SHAFTS.

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

90,0 cm

Largeur

84,0 cm

Hauteur

93,0 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Énergie-électrique

Catégorie

Transformation

Sous-catégorie

S/O

Fabricant

Ou

STOW

Pays

United States of America

État/province

New York

Ville

Binghamton

Contexte

Pays

États-Unis d'Amérique

État/province

Inconnu

Période

THIS TYPE OF MOTOR USED C.LATE 1890S-1930.

Canada

PART OF A LARGE AND VARIED COLLECTION OF ELECTRICAL ITEMS ACQUIRED & DOCUMENTED BY ONTARIO HYDRO IN THE 1960S. THIS COLLECTION CONSISTS OF OVER 7500 ARTIFACTS, AND IS THOUGHT TO BE THE LARGEST & MOST COMPREHENSIVE IN CANADA. IT WAS DONATED IN ITS ENTIRETY TO THE NATIONAL MUSEUM OF SCIENCE & TECHNOLOGY IN 1992.

Fonction

TO CONVERT DIRECT CURRENT ELECTRICAL ENERGY INTO ROTARY MECHANICAL ENERGY.

Technique

MULTI-SPEED MOTOR PERMITTED VARIATION OF SPEED (BETWEEN EST'D MINIMUM & MAXIMUM LIMITS) BY SIMPLY TURNING SMALL HANDWHEEL ON TOP OF MOTOR. THE SPEED OF THE MACHINE IS VARIED BY CHANGING THE INTENSITY OF THE FIELD MAGNETISM. EFFICIENCY REMAINED NEARLY UNIFORM REGARDLESS OF SPEED; HP REMAINED UNCHANGED; NO SPARKING AT THE COMMUTATOR RESULTED BECAUSE MAGNETIC STRENGTH WAS MAINTAINED AT THE POLE TIPS (REF.2). THIS DESIGN PROVED SIGNIFICANT IN THE DEVELOPMENT OF VARIABLE SPEED ELECTRIC MOTORS USED FOR DIRECT DRIVE OF INDIVIDUAL MACHINES.

Notes sur la région

Inconnu

Détails

Marques

MFR'S PLATE SCREWED TO CASING READS: 'STOW MFG. CO./ BINGHAMTON, N.Y. U.S.A./ No 870/ 220 VOLTS 8 A.P. 710/ 1565 R.P.M.'/ 'STOW M'F'G CO.' CAST IN RAISED PRINT ON ONE SIDE OF CASING; 'BINGHAMTON, N.Y.' CAST IN RAISED PRINT ON OPPOSITE SIDE/ EACH OF 4 MAGNET BUNDLES NUMBERED: [CLOCKWISE, FROM TOP]: '705', '678', '[ILLEGIBLE]', '670'/ SECOND PLATE SCREWED TO CASING READS: 'MULTISPEED MOTOR/ PATENTED JAN. 18 1898/ IN UNITED STATES/ GREAT BRITAIN & FRANCE/ OTHER COUNTRIES PENDING.'/ DECAL APPLIED TO CASING TOP READS: 'PROPERTY OF/ STATE UNIVERSITY OF IOWA/ EEM 862 L7'/ '1112 C.C. [ILLEGIBLE TEXT] STAMPED ON SHAFT END.

Manque

VARIOUS PIECES OF ELECTRICAL POWER HARDWARE MISSING. FIELD COILS, BRUSHES & POWER JUMPERS NOT CONNECTED.

Fini

MOTOR CASE & BASE HAVE BLACK GLOSSENAMEL FINISH. FIELD & ARMATURE WINDINGS TAPED, VARNISHED & PAINTED BLACK. NATURAL FINISH ON ARMATURE SHAFT & PULLEYS

Décoration

S/O