Demonstration Model "Murphy's Mechanical Movement", c. 1900

Bell Telephone Demonstration Model, c. 1900 Manufacturer: E. Leybold's Nachfolger, Coeln-Rhein. Open-works telephone model for demonstrating the mechanism, on mahogany base, very good original condit

Group of Physical Demonstration Models, c. 1900 1) Wimshurst's influence machine, Trüb, Fierz & Cie., Zurich, height 14 ½ in., complete, rubber straps need to be renewed. - 2) 8 chromic acid

4 Interesting Physical Demonstration Models, c. 1900 1) Ebert's phosphorescent lamp with 2 electrodes. – 2) Crookes' apparatus for experiments on radiant matter. – 3) Crookes' radiometer. – And:

2 Electrostatic Induction Demonstration Models, c. 1900 Glass balls with hanging gold strips, conductors on the top, height 7 ½ and 9 7/8 in. 2 Demonstrationsmodelle "Influenz-Elektrizität", um 1900

Ampère Table, c. 1900 Physical demonstration model, used for experiments on the relationship between magnetic fields and electric currents, probably France, with pole changer, overall height 15 3/4 i

Electromagnetic Motor with Geissler Tube, c. 1900 Physical demonstration model, for tubes up to 6 in., overall height 8 in. Elektromagnetischer Motor mit Geißler'scher Röhre, um 1900 Physikalisches

Chordephon Mechanical Zither Model 10, c. 1900 Chordephon Musikwerke Claus & Co., Leipzig, Germany. 44-note self-playing zither, for discs of Ø 14 1/3 in., hand-cranked, metal frame, playing conditio

Orpheus Mechanical Piano, c. 1900 Model no. 17, handcranked, for Ariston cardboard discs of 13 in. Ø, manufactured by Musikwerke Ludwig & Co., Leipzig, formerly Paul Ehrlich. 24 notes, steel strings,

Demonstration Model of an Early Carbon Grain Microphone, c. 1900 With series resistor and switch, wood base stamped with no. 188937. Demonstrationsmodell eines frühen Kohle-körnermikrophons,

Orpheus Mechanical Piano, c. 1900 Musikwerke Ludwig & Co., Leipzig, formerly Paul Ehrlich. Model 18, serial no. 148180, hand-cranked, for Ariston cardboard discs of 13 in. Ø, 24 notes, steel stri

English, c.1900, unsigned but the Watson Fram model, with unusual black glass polarising mirror, mechanical stage engraved 'Watson & Sons', triple nosepiece with three objectives in an associated maho

3 Magic Lanterns and Cinematographs, c. 1900 35 mm, on wood bases. 1) Lapierre, Paris. "Lapierre Cinema", with beater movement, for 50 mm wide slides, height 43 cm. - 2) Unmarked model with Art-Nouvea

Continental Typewriter Demonstration Model, c. 1935 Official model of Wanderer-Werke, Siegmar-Schönau, no. P072545, for demonstrating all functions of a typewriter, carriage movement defective, o

Tesla Coil Demonstration Model, c. 1915 With label: "Elektro Vulkan, Kromeriz", circular wood base, inner coil on porcelain isolator, outer coil on 3 glass columns, height 15 ¾ in., Ø 10 1/5 in.,

Electrophysical Demonstration Model, c. 1890 France, marked "HRFA", mahogany, thick-walled glass container (fixed to the base), 6 electric connections, 2 coils, 2 electrodes inside of the glass, one s

3 American Steam-Engine Demonstration Models, c. 1910 1) Cast-iron model of a railroad locomotive engine, reversible, with Stephenson steering, hand-cranked, width 18 ¼ in. - 2) Steam motor, cas

Swiss Chair with Musical Movement, c. 1900 With inscription "Chamonix". Carved walnut, decorated with flowers and leaves, turned legs, Swiss 1-air movement under the seat, as soon you sit down, the m

4 Physical Demonstration Models, c. 1910 1) Reflection and refraction apparatus by "Max Kohl, Chemnitz". – 2) Filament lamp on wooden stand. – 3) Voltmeter by "Radiguet à Paris", brass. – And:

3 Electro-Physical Demonstration Models, c. 1915 1) Stand with 2 copper spirals separated by a glass cylinder, with an incandescent lamp, height 13 in. - 2) Kolbe's electrometer, aluminum, standard b

2 Physical Demonstration Models, c. 1910 1) Crookes' radiant matter tube, height 16 ½ in. – And: 2) Winkelmann-type vacuum double bulb, 1 glass tip broken, height 15 ¾ in. 2 physikalische Demonstr

6 Physical Demonstration Models, c. 1910 1) 2 Leyden jars, height 15 and 20 ½ in. – 2) Discharger, with 2 ebonite handles and hinge. – And: 3) 3 conductors on glass pillars, one by Robert Droste

French architectural roof model c. 1900 tin, porcelain, carved mahogany 28 w x 14.25 d x 22.5 h inches Sold with original box and framed rendering.

Steam Engine Large Scale Metal Model. Huge flywheel on this working model c.1900. Base is 30 inches long and 16 inches tall. Flywheel is 15 inches tall.

WATERBURY RENAISSANCE REVIVAL CARVED MAHOGANY HALL CLOCK, NO. 68 WITH MOON PHASE MOVEMENT, C.1900. HEIGHT 8'8"