Build it YOURSELF!, a REAL ELECTRIC MOTOR

& Others

© Brooke Clarke 2007

Build it Yourself! a Real Electric Motor Box Top Build it Yourself! a Real Electric Motor
Fig 1 approximately full size box top Fig 2 Kit Contents sort of arranged


G.W. Moore Build it Yourself! Motor Kit
Sience First 10-135 Version of the G.W. Moore DC Motor 
Sience First 10-100 Motor Generator  
St. Louis Motor
Industrial Arts Supply Company (IASCO) 3-Pole Self Starting Motor Kit
World's Simplest Motor
Patents
Related
Links

Instructional DC Motors

G.W. Moore Build it Yourself! Motor Kit

Background

This electric motor kit was patented in 1932.  If you look closely at the box top in Fig 1 above you can see short cut marks that appear in pairs.  The kit is built on the box top.  The Box top and patent signature say G.W. Moore, but the patent printed name is G.A. Moore, typo?

Wire

In the kit is a piece of wire coiled a little over 1 ½" in diameter with a little over 11 turns.  The O.D. is a little over 0.026 so looks like AWG 22 which has 62 feet/Ohm.
This calculates as 0.07 Ohms and when measured using a Kelvin test lead set on the HP 34401 shows 0.084 Ohms.
The box says the finished motor will run from a No. 6 Dry Cell battery.  The instruction sheet also says to use a single No. 6 battery and that the motor will turn at over 6,000 RPM.

A No. 6 batery is 1.5 Volts when fresh so the current might be I = V/R = 1.5/0.085 = 17.6 Amps.  I don't know what the Internal resistance of a No. 6 battery is but doubt you can get anywhere near that current. 

Science First p/n 10-135

Science First 10-135 Motor Kit
 Working Science First 10-135 DC Motor
as received (instructions not shown)
 Working Universal Motor

Science First has been making this motor kit mainly for schools for many decades.  I'ts very similar to the above version, except there's now a seperate plastic base with provision for a single AA battery for power and an improved commutator.  The wire size has been reduced, maybe to allow for the smaller capacity battery.  The manual is on the Science First page for the Motor kit.f

This is covered in patent 1857209 (See below)

Assembly

The furnished instructions leave something to be desired.  Maybe it's the intention of the sellers that the instructions are also a teaching tool to get the students to think ahead and not believe everything they read.  If that's the case they are OK, but if they are intended to allow you to make a working motor by following them, then they miss the mark.  With the exception of cutting a wire none of the assembly operations is permenant so the motor can be taken apart to fix a problem.

Video of Motor Running

YouTube:  Science First AA Battery Motor Kit 10-135 -

Science First 10-100 Motor Generator

Science First 10-100 Motor Generator
Sience First 10-100 Motor Generator
This Motor Generator is typically used in schools to demonstrate Faraday's and Lens's laws.  It's similar to the Saint Louis Motor, but a little more versatile.  The manual is on the Science First page for the Motor Generator.

At the left of photo the permanent magnets for the filed are installed and the electromagnets are to the side.

The armature coil is 0.35 Ohms. The red and black wires are each about 0.01 Ohms and the two "D" cells and battery holder are about 0.25 Ohms.  Battery voltage is 2.956 Open circuit.  Don't know about the commutator resistance.  When the armature is held vertical, i.e. the brushes making contact the current is 3.2 Amps.

Video 10-100

 first run with Permenant Magnet field & problem with one of the brushes.
YouTube: Science First 10-100 Motor Generator -

St. Louis Motor

This is the classic demonstration motor.  Made by Morris & Lee Inc. (Now Science First, 615-4705), 615-4700).
The Morris and Lee. Inc. p/n for the motor is 10-155-000 which includes a pair of bar magnets and the DC armature.
The optional Field Electromagnet is p/n. 10-160-000
The optional AC Generator armature is p/n 10-165-000 (Borealabs p/n: 62627-01
There is also a 3-pole armature, but not with this kit of parts.
The bar magnets are 6" x 3/4" x 1/4"

Fig 1 Probably from Boreal, but old model No.

St. Louis Motor
 Fig 2 Came with optional Field Electromagnet No. 10-160-000
St. Louis Motor		 Fig 3 The filed coil at right runs on 1-1/2 to 3 VDC. The bar magnets are 6" x 3/4" x 1/4"
St. Louis Motor		 Fig 4
St. Louis Motor

Industrial Arts Supply Company (IASCO) 3-Pole Self Starting Motor Kit

https://www.iasco-tesco.com/

This is the smallest motor kit I've seen.

Industrial Arts Supply Company (IASCO) 3-Pole Self Starting Motor Kit
 Industrial Arts Supply Company (IASCO) 3-Pole Self Starting Motor Kit

World's Simplest Motor

I learned about this on the YouTube channel of Bruce Yeany.  I got there learning about the ZipString he came up with.
Simple motors experiments, 5:54 - includes the MIT Motor;  World's simplest motor kits, 4:41 - These motor kits are made by his company Yeany Educational Products.

This is very similar to the Motor Contest (MIT) in the MIT physics 8.02 class by Walter Lewin.
YouTube: Ray Wilson: MIT Freshman Motor Challenge, 1:12 - 2 meters of magnet wire, 2 each thumb tacks, 2 each paper clips, a piece of wood and a magnet.
YouTube: Official: Motor Project Results MIT, 6:06 - also See DC Permanent Magnet Motors & Testing DC PM motors

As you can see in Fig 1 instead of thumb tacks and wood stick there's a plastic holder for a single "D" cell battery.  The two preformed metal uprights replace the paper clips.  This makes is easy for grade school kids to make pretty much the same motor as the MIT students.
One source is Teacher Source. They also have a lesson plan SS-11.pdf - which links to: 
What is the magnetic field?, 2:30 -
Electromagnets - How can electricity create a magnet?, 4:57
How to build a simple electric motor, plus how it works, 2:17 -

Fig 1
World's Simplest Motor

Patents


1857209 Toy Electric Motor, G.A. Moore, May 10, 1932, 310/1 ; 310/40MM; 310/46; 434/380 - G.W. Moore Build it Yourself! Motor Kit
 1857209 Toy Electric Motor, G.A. Moore, May 10, 1932, 310/1 ; 310/40MM; 310/46; 434/380  - G.W. Moore Build it Yourself! Motor Kit

2668924 Dynamo electric Machine, Frank Richard Merrlam (Redmond Co), Feb 9, 1954, 310/239 ; 310/216; 310/244; 310/258 -
method of construction, uses square crosssection brushes in expensive holder
Calls:
703100 Massaging Implement, JULIUS B. WANTZ (VICTOR ELECTRIC Co), Jun 24, 1902, 601/93 ; 132/73.6; 30/45; 310/164; 310/239; 310/247; 310/50; 310/80; 433/122 -
 offset shaft causes head to move back and forth
1857209 this web page
2112747 Dynamo-Electric Machine, Alexander P. Wood (GE), Mar 29 1938, 310/258 ; 29/596; 29/609; 29/897; 310/51; 336/210; 336/61; 428/578; 428/582; 428/595; 428/596
Frame construction
2477150 Portable Electric Motor or the like, Snyder et al. (Knapp-Monarch), Jul 26 1949, 310/50 ; 173/170; 173/179; 310/247; 366/129; 366/601 - kitchen hand held mixer
References:
2048096 Electric Motor, William F. Bisley (Chicago Flexible Shaft), Jul 1936
2048455 Food Mixing Device with Beater Ejector, Ernie Knapp (Dominion Electrical Mfg), Jul 21, 1936
2093534 Household Mixer, (Chicago Flexible Shaft)
2096618 MOTOR AND HOUSING ASSEMBLY, Knapp (Dominion Electrical Mfg)
2106058 ELECTRIC MOTOR, Scovill Mfg, Jan 18 1936 - Mixer or juice extractor
2114102 Radio Interference Eliminator for Electrical Appliances, Hoover
2211906 ? number
2291775 MOTOR, Hoover
2323945 MOTOR, food mixer, Dormeyer Mfg Co
2346778 PORTABLE HAND HELD ELECTRIC TOOL, electric hand drill, Independent Pneumatic Tool Co
2348341 MOTOR, kitchen mixer, Chicago Electric Mfg Co
2504564 MOTOR BRUSH MOUNTING, General Industries Co
2518479 DYNAMOELECTEIC MACHINE,  ducted fan, Lee Engineering Co
2912604 Minature Electric Motor for Toys, Eurich (Mettoy, UK), Nov 10 1959, 310/1 ; 310/40MM; 310/40R; 310/46 - model train
Calls:
1835721 PEBMANENT MAGNET MAGNETIC MOTOR, Arthur Powell, Dec 8 1931, 310/46 -
1857209 this web page
2235151 ELECTRICAL MACHINE,
2279690 COMBINATION MOTOR GENERATOR. Z. T. Lindsey, permanent magnet
2404331 ELECTROMAGNETIC MOTOR, Sture Edvard Werner, - telephone selector
2632284 Toy Electric Railway Car, Robert Louis F. Mcdonald, Mar 24, 1953,
2659317 TOY LOCOMOTIVE, Bonanno et al (Lionel), Nov17 1953, 105/49 ; 191/49; 310/219; 310/237; 310/247; 310/254; 310/43; 310/46; 310/68A; 310/71; 310/73; 310/83; 310/89; 446/467; 446/485 - model railroad
2791704 MINIATURE ELECTRIC MOTOR FOR TOY LOCOMOTIVES, 
Called by:
4199699 Motor and drive for a timepiece Apr 22, 1980
3072812 Permanent Magnet Motor
Calls:
14598 Improvement in Magneto-electric Machines, Calvin Carpenter Jr., Apr 8, 1856, 310/154.21 - Medical Magneto-electric Battery
1857209 - see above
1862248 Electro Motor Drive, E. Wesnigk, Jun 7, 1932, 105/54 ; 104/288; 104/DIG.1; 105/49; 310/1; 310/192; 310/219; 310/46 - rotary motor built into toy
Called by:
2553292 Dynamoelectric Machine
2632284 Electric Railway Car
2542959 Minature Electric Motor
2536344 Electric Propulsion Unit
3159109 Toy

2058523 TOY ELECTRIC TRAIN APPARATUS
2457637 ELECTRICAL MOTOR, Harrison D. Brailsford, Dec 28 1948, 310/46 ; 310/40MM; 310/40R - self starting (offset magnetics) pulsing clock drive motor
see my Quartz Clock page for more about this type of motor
2632284 Toy Electric Railway Car
5672564 ? number
2916684 Armature Construction 
3096452 Motor for Electric Clocks, A. W. HAYDON (Consoldated Electronics), Jul 2 1963, 310/46 ; 310/233; 310/36; 368/164; 968/494 -
Calls:
912037 Electric Motor, Gustave Seidel, Feb 9, 1909, 310/20 - permanent magnet and two pair of coils, works like steam engine
1578096 Electric Motor,  - two coils rotate inside permanent magnet
1857209 this web page
2000600 Electric Clock, slef winding motor (see Western Union Self Winding Clocks page1, page2)
2523298 MOTOR SPEED GOVERNOR
2717350 GOVERNOR FOR ELECTRICAL MOTORS
3109946 Electromagnetic Motor
Calls:
1857209 this page
2446296 Toy MOTOR, Phillip Movitz, Aug 3 1948, 310/46 ; 310/1; 310/40MM; 310/40R; 335/270 - a slightly more complex version of the Toy Motor Kit with more adjustments and better design.
References:
502377 ELECTRIC MOTOR OR DYNAMO, SAMUEL PAUGH, Aug 1, 1893, 310/40R - similar in concept the the Toy Motor Kit, only more massive and not a toy
1046834 CORE STRUCTURE FOR DYNAMO-EBECTRIC MACHINES, Westinghouse
2415715 ELECTROMAGNETIC IMPULSE MOTOR, Remington Rand
2488223 ELECTRIC TOY MOTOR, Robert Moos, Nov 15 1949, 310/1 ; 310/46 - with speed control by rotation of commutator
1857209 this page
2532700 ELECTRIC MOTOR AND GENERATOR, Eurich, - permanet magnet small for use not toy
References:
516553 ARMATURE FOR DYNAMO-ELECTRIC MACHINES OR MOTORS, WILLIAM BROOKS SAYERS, Mar 13, 1894, 310/267 ; 310/220; 310/265
Sparkless by wiring forward and backward coils to the armature terminals
2334153 ELECTRIC MOTOR, James Wilson , Nov 9, 1943, 310/46 ; 310/152 - heavy duty DC motor
2449021 DYNAMOELECTRIC MACHINE, - Hoover vacuum cleaner
2598211 TOY MOTOR, Stephen B. Beliaeff, May 27 1952, 310/46 ; 310/154.36; 310/40MM - very similar to this Motor Kit, but longer and to be sold ready to use
References:
2453101 MINIATURE PERMANENT MAGNET MOTOR, F. R. SCHULZ (Essell  Corp), Nov 2 1948, 310/46 ; 310/154.36; 310/244; 310/40MM; 310/40R -
a five pole industrial version of the this toy motor
2456967 ELECTRIC MOTOR, Carlos B. Livers (Variety Development and Engineering) -
designed to be sold as a kit, same basic design but much more heavy duty like would be used on a fan
References:
1169779 ?  RESILIENT WHEEL
1540038 ELECTRIC MOTOR, Domestic Elec Co, - frame for "fractional horsepower"
1778678 DEMOUNTABLE ELECTRIC MOTOR, for use on talking machines
1793834 ELECTRIC MOTOR, CLARENCE D. BAISCH, Feb 24, 1931, 310/46 ; 310/40MM; 310/43 -
like this motor but looks like made from solid metal castings for lower cost
2233623 SHAVER MOTOR, Westinghouse
2323945 MOTOR, food mixer, Dormeyer Mfg Co
2465446 DIRECT-CURRENT TYPE MOTOR, Gorfin et al., Mar 29 1949, 310/46 ; 310/154.36; 310/236; 310/244; 310/40MM; 310/40R - Five pole version is the motor
2894156 MINIATURE MOTOR, Allen H. Kent, Jul 7 1959, 310/154.25 ; 310/239; 310/258; 310/40MM; 310/40R; 324/151R - ring type permagnet version 3 pole
Called by:
4086510 Flat miniature dynamoelectric machine Apr 25, 1978
4150582 Rotor ring for inertial energy storage rotor Apr 24, 1979
6465928 Multi-pole generator rotor and method of making the same Oct 15, 2002

Called by:
Patent Number Title Issue date
5621258 Toy motor with partial coil rotor Apr 15, 1997
5659210 Easily constructible instructional electric motor Aug 19, 1997
6137194 Low voltage electric motor for motivational teaching Oct 24, 2000

3305741 Minature Electric Motor, J. LINDNER, Feb 21 1967, 310/261 ; 310/1; 310/264; 310/270; 310/40MM; 310/46 - 6 pole
Calls:
RE8141 IMPROVEMENT IN DYNAMO-ELECTRIC MACHINES - 6 poles
406429 DYNAMO-ARMATURE
426348 DYNAMO-ELECTRIC MACHINE
829801 ? METHOD OF MAKING HOLLOW ARTICLES
1658970 ? RF Transformer

5621258 Toy Motor with Partial Coil Rotor
Calls:
Patent Number Title Issue date
498585 ELECTRICAL ROTARY MOTOR May 30, 1893
1223375 ELECTRICAL TOY Apr 1917
1232676 RELEASE RIGGING BRACKET Jul 1917
1857209 TOY ELECTRIC MOTOR May 1932
2446296 MOTOR Aug 1948
2488223 ELECTRIC TOY MOTOR Nov 1949
3109946 ELECTRO-MAGNETIC MOTOR Nov 1963
3445692 MASAO KATO ELECTRIC MOTORS FOR TOYS May 1969
3678310 INSTRUCTIONAL ELECTRIC MOTOR Jul 1972
4314169 Magnetic motor Feb 2, 1982
Called By:
7095645 Nanoelectromechanical memory cells and data storage devices Aug 22, 2006
7148579 Energy conversion systems utilizing parallel array of automatic switches and generators Dec 12, 2006
7196450 Electromechanical assemblies using molecular-scale electrically conductive and mechanically flexible beams and methods for application of same Mar 27, 2007
7199498 Electrical assemblies using molecular-scale electrically conductive and mechanically flexible beams and methods for application of same Apr 3, 2007

D237877 Motor and Generator Educational Board
Calls:
D158705 Toy Electric Motor, Edward D. Wilk (Wilkit Toy Corp), May 23, 1950, D21/528
References:
1490125 Toy Motor, O'Leary, Apr 15 1924, 310/21 ; 104/296; 105/150; 310/29; 446/462 - model railroad uses a No. 6 Dry Cell
1857209 this motor
1857209 this motor
2826628 EDUCATIONAL APPARATUS, Olan E. Kruse, Mar 11 1958, 429/98 ; 180/90; 434/301 - electrical experiment board
D158705 see above

Related

Electro-Magnetic Toy Engine - sounds like a gas or steam engine
Gilbert DC 3-pole Electro-magnetic Machine - used with early Erector Sets & a larger small appliance motor (maybe also Gilbert).
MESCO 1011 Toy Engine - works like a steam engine
Weeden D.C. Motor -a 2 pole D.C. motor
No. 6 Dry Cell - and  Flash Amps as measured with Pocket Ampmeters
Self Winding Clock Co. "Western Union" clocks - uses electromagnetic motor to wind spring page 1, page 2
DC Permanent Magnet Motors, Testing Small DC PM Motors, Flywheel - Pulley 
DC Gauss Meter
Magnets - 
My YouTube DC PM Motor Play List

Links

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