MUSEUM & COLLECTIONS OF SCIENTIFIC INSTRUMENTS
W1TP TELEGRAPH AND SCIENTIFIC INSTRUMENT MUSEUMS: http://w1tp.com
Prof. Tom Perera - W 1 T P - Historian and Collector.

(I am always looking to buy, trade, or photograph telegraph keys and scientific instruments.)
This museum contains a number of interesting scientific instruments which I have acquired while searching for telegraph instruments. I am always interested in trading scientific instruments for early and interesting telegraph instruments. The items in this museum which are still in my possession are available for such trades. Items which have been traded are also included in the museum for reference purposes.

MUSEUM & COLLECTIONS OF SCIENTIFIC INSTRUMENTS

TABLE OF CONTENTS:
1. VERY EARLY AND MODERN "PHILOSOPHICAL" APPARATUS:
2. GALVANOMETERS:
3. DECADE BOXES AND STANDARDS:
4. STATIC ELECTRICITY AND RELATED INSTRUMENTS:
5. METERS, TEST INSTRUMENTS, WAVEMETERS, ETC.:
6. TUBES AND RELATED ITEMS:
7. OPTICAL INSTRUMENTS:
8. MISCELANEOUS AND ODDITIES:
9. SCIENTIFIC SHOWS, PUBLICATIONS, AND DEALERS:


1. VERY EARLY AND MODERN "PHILOSOPHICAL" APPARATUS:

FARADAY PHILOSOPHICAL MOTOR (Now in the John Williams Collection):(32KB) This early motor was used to demonstrate the turning force of an electric current passing through a wire It consists of two circular pools which are to be filled with mercury. Into these pools dip contacts at each end of a vertically mounted iron bar that is suspended by two pivot points at top and bottom. When electricity is applied by way of the mercury pools, the bar rotates in a horizontal plane. One of these units is on permanent exhibit at the Smithsonian Institution. Circa 1830s. (Traded to John Williams).

KING MENDHAM PHILOSOPHICAL MOTOR:(37KB) This copper wheel spins in a pool of mercury when a voltage is passed through it. The label reads: KING, MENDHAM & Co. Electrical Engineers & Contractors. Bristol.
Another front view of the motor:(15KB)
A rear view of the motor:(14KB)
A close-up view of the ivory label:(15KB)
A view of the bottom of the motor:(15KB)

BARLOW'S WHEEL MOTOR & FARADAY DISK DYNAMO:(21KB) Demonstration apparatus manufactured by CENCO to show principles of Barlow's Wheel, the Faraday Disk, Magnetic Braking, and Lenz's Law. -traded.

PHILOSOPHICAL MAGNETIC FORCE DEMONSTRATION APPARATUS:(16KB) This extremely early coil was used to study and demonstrate the principles of magnetic force.-traded.

EXTREMELY EARLY INDUCTION COIL WITH MANUAL INTERRUPTOR:(13KB) This is an extremely early example of an induction coil. Turning the knob interrupts the DC going to the coil allowing it to step up the voltage. It may have been used for philosophical demonstrations or for medical "treatments" but since it is not labeled, it's use is unclear. It is owned by collector Peter Malvasi - W2PM.
Another View of the Induction Coil:(10KB)
Another View of the Induction Coil:(11KB)
Another View of the Induction Coil:(12KB)

19th CENTURY GYROSCOPE:(6KB) This is a very lovely and early gyroscope. It was used for demonstrations of gyroscopic principles in an early University. It is put into operation by winding a string around the lower section and pulling it while keeping your finger on the cupped surface on top of the shaft. It is nicely machined.
ANOTHER 19th CENTURY GYROSCOPE:(6KB)Very similar to the one shown above without the finger cup on the top.

MENDOCINO BEARINGLESS FLUX-SUPPORTED ELECTRIC MOTOR:(10KB) This modern but interesting motor has no bearings and is supported by the magnetic flux from several torroidal magnets. Solar panels generate electricity which flows through coils of wire, interacts with the magnetic fields, and produces rotation. These motors are constructed by Thomas C. Vales who may be contacted by email at: tcv@genrad.com


2. GALVANOMETERS:

PYE COULOMB BALANCE:(48KB) This unusual device balances out the attraction between the two balls and a magnetic field created by the horizontally mounted coil of wire. It is capable of measuring very small amounts of current.

EARLY THOMPSON MIRROR GALVANOMETER:(18KB) Manufactured by ELLIOTT BROS. - LONDON: This tripod-based all brass Thompson mirror galvanometer number 502 has overhead compensating magnets extending up from the top. This unit is the same kind as the one on Thomas Edison's desk while he was experimentg with early telegraph systems. - TRADED.
THOMAS EDISON USING A THOMPSON GALVANOMETER: (144KB)

KNOTT APPARATUS COMPANY MIRROR GALVANOMETER: (12KB) The Ivory label reads: Designed for International Correspondence Schools, Scranton, PA. Manufactured by L. E. Knott Apparatus Company, Scientific Supplies, Boston, MASS.

CAMBRIDGE INSTRUMENT CO. Ltd - ENGLAND: (94KB) A large beautiful complex brass galvanometer with hair thin meter needle, compensating magnet, and mechanism sticking up out of center of a large round brass base with leveling screws. Number C143520. - TRADED.

EARLY GRAMME RING HORIZONTAL COIL GALVANOMETER:(16KB) Very early and primitive horizontally mounted multi-tapped coil surrounding a horizontally oriented compass.

CAMBRIDGE INSTRUMENT CO. LTD - ENGLAND Very very very tiny table top oil-filled mirror galvanometer with leveling screws.Number L-18096. -TRADED.
CAMBRIDGE INSTRUMENT CO. LTD - ENGLAND strange and very heavy mirror galvanometer marked C 92451. Oil filled precision mirror movement mounted on heavy metal apparatus with round metal arms and a thermometer sticking upwards.-TRADED

ABRAHAM RHEOGRAPH PRISM SYNCHROSCOPE: (32KB) This extremely rare prism synchroscope has an early synchronous-motor driven horizontally rotating triangular prism and mirror system that provides the time-base for the light beams from the two low-mass mirror galvanometers. This provides a dual-trace plus time-base display. Original finished wooden case.

W. G. PYE & Co. - Cambridge England Small table-top mirror galvanometer with large magnet and 3 leveling screws- TRADED.

LEEDS & NORTHRUP strange, very tall table-top mirror galvanometer with very large magnet and 3 leveling screws. Hard rubber panel -TRADED.

LEEDS & NORTHRUP wall mounted mirror galvanometers with wooden bases and brass cover plates. # 101063 and unnumbered.-TRADED

LEEDS & NORTHRUP Table-top round mirror galvanometers with cylindrical brass vertical cylinder, Bakelite base, and 3 leveling screws. # 189352, 360738, and 732521. - TRADED

WOODEN MIRROR GALVANOMETER in large wooden box with built-in light source mounted on wooden base. Also on base are metal pedistals sticking up into the light beam.-TRADED

PHILIP HARRIS TANGENT GALVANOMETER:(25KB) A large 4" diameter horizontally oriented compass indicator is located in the center of a 7" vertically oriented coil of wire all mounted on a wooden stand with leveling screws. The coil taps are marked 2,50,& 500. Made by Philip Harris Ltd,Birmingham, England.

WELCH TANGENT GALVANOMETER:(14KB) Large diameter vertically mounted multi-tapped coil surrounding a horizontally mounted compass. The amount of current in the coil is proportional to the tangent of the angle of deflection of the compass.-traded.

CENTRAL SCIENTIFIC TANGENT GALVANOMETER:(13KB) Similar to the Welch galvanometer described above.-traded.
Close-up view of base:(17KB)
Close-up view of compass:(19KB)

STOELTING TANGENT GALVANOMETER:(18KB) Very simple and primitive tangent galvanometer consisting of a compass mounted in a wooden block with a coil of wire wound around the block in a vertical plane.

EARLY GENERAL RADIO MODEL 129 GALVANOMETER:(24KB) This is an early General Radio Galvanometer. It uses two internal horseshoe magnets and shows signs of having been partly manufactured by hand.
A View of the early General Radio Galvanometer with cover removed:(35KB)


3. DECADE BOXES AND STANDARDS:

1 Hartmann & Braun huge decade box with elaborate brass contacts on very old hard rubber or ebonite panel mounted on a wooden base. Stamped: Made by Hartmann & Braun, Frankfurt A/M for Queen & Co. Philadelphia. Richtig Bei, 18, Grad Celsius. Extremely impressive with mounting hole in center for meter or additional decades. -TRADED.

2 ELLIOTT BROS - LONDON round brass decade boxes (galvanometer shunts) with very old hard rubber or ebonite top panels and contact blocks marked 1/9, 1/99/ 1/999. -TRADED.

1 VERY EARLY ROUND BRASS DECADE BOX with old hard rubber panel marked G, R, +, 1, 10, 10 squared, 10 cubed, 10 to the 4th. Manufacturer's Logo only is capital "A" with "C" through it in the middle of a meter face symbol - TRADED.

1 LEEDS & NORTHRUP very early style resistance decade box. Hard rubber panel, brass contacts, rectangular wooden base- TRADED.

1 ELLIOTT BROS - LONDON very early # 623 decade box with Hard rubber panel, brass contacts, and rectangular wooden base - TRADED.

QUEEN & Co. Maker, number 25, 1-ohm standard:(14KB) Very early round brass base with hard rubber top panel and thick copper conductors all contained in fitted wooden carrying case. This was the standard used to define the first standard ohm.-traded.
Closer view of standard in box:(17KB)
View of interior of standard:(16KB)
Close-up view of label on standard:(17KB)
Close-up view of wire resistor:(18KB)
Another view of internal wiring:(20KB)

1 WESTON CLARKE STANDARD ELEMENT: A very old 5" high cylindrical metal base with rubber panel on top engraved Zn and Hc. 2 Brass terminals- TRADED.
1 WESTON CLARKE STANDARD: A very old 1-1/2" cylindrical metal base with rubber panel on top & tapped coil of thick wire inside. Four Brass terminals are located on top - TRADED.


4. STATIC ELECTRICITY AND RELATED INSTRUMENTS

VERY EARLY GERMAN STATIC ELECTRIC GENERATOR:(9KB) This very early German machine was used to demonstrate the generation and characteristics of static electricity. The leather pads which brushed against the disk and the disk itself have been replaced with more recent parts. The lead foil which was glued to the upper part to conduct the electric voltage has mostly worn away but some of it is visible. The following pictures provide closer views of different parts of the instrument.-traded.
A Closer view of the hub of the machine:(15KB)
A Closer view of the leather pad:(18KB)
A Closer view of the bottom of the machine showing the wooden nuts:(15KB)

EARLY GERMAN STATIC ELECTRICITY SPARK GAP:(10KB) This small unit measures 5 inches wide. It provides a 1-1/2 inch spark gap for demonstrating the characteristics of electric sparks. The wooden lower post was covered with a thin layer of lead foil which conducted the voltage and which is mostly worn away.-traded.
Closer view of the spark gap:(7KB)

EARLY WIMSHURST STATIC ELECTRICITY GENERATOR:(15KB)This is an early example of a simple Wimshurst static electricity generator which was used in many universities to demonstrate the generation and characteristics of high voltages. The two Leyden jars stored the generated voltages like modern-day condensers.-traded.
Another view of the Wimshurst Generator:(16KB)
A closer view of the front of the hub:(17KB)
A view of the rear of the hub:(17KB)

EARLY WIMSHURST STATIC ELECTRICITY GENERATOR:(19KB)This is a small Wimshurst static electricity generator which was used in Physics courses to demonstrate the generation and characteristics of high voltages. It is nicely decorated but it is missing the two Leyden jars.-traded.
ANOTHER VIEW of the Early Wimshurst machine:(16KB)

MORE RECENT WIMSHURST STATIC ELECTRICITY GENERATOR:(12KB)This machine was made by Central Scientific Corporation and is shown in their 1941 catalog. Several of the parts and both of the Leyden jars are missing but it is an example of the kind of devices which were used in schools and colleges to give demonstrations. It is shown next to a static ball which was also used in demonstrations: -traded.
A closer view of the center of the generator:(15KB)
A closer view of the static ball:(8KB)

EXTREMELY UNUSUAL SHINN "THUNDER STORM MACHINE" WIMSHURST MACHINE:(42KB) This is an unusual portable Wimshurst machine mounted inside an oak box with a glass window on the front through which one can watch the rotating disks. Two unusual flat rectangular Leyden jars are also mounted inside the box. The Spark balls extend through the top of the box. Label reads: W. C. Shinn. Maker of the Copper Cable Lightning Rod. also Shinn's Thunder Storm Machine. Pat'd Dec 10, 1907. Apparently used to demonstrate lightning rods in action to potential customers.-TRADED

GILBERT CLOUD CHAMBER TOY:(13KB) The air pressure in the cloud chamber is increased by pumping the hand-pump to produce a "cloud" of water vopor. Then a high voltage is applied allowing the trails of the particles emitted by the source to become visible.

3 LARGE LEYDEN JARS:(20KB) From a very large Wimshurst machine. TRADED.
1 LEYDEN JAR: Very early and beautiful tapered glass Leyden Jar. -TRADED.

1 PITH BALL ELECTROMETER.Pith ball hangs from glass rod. Wood base. TRADED

1 ELECTROSCOPE: Not exceptionally old but an interesting one.-TRADED.


5. METERS, TEST INSTRUMENTS, WAVEMETERS, ETC.

1 STOELTING wind-up metronome / mercury-dip variable repetition rate square wave pulse generator. Consists of a typical spring wound metronome with separate mercury dip make and brake contacts that are activated every time the metronome ticks.

1 EARLY "FIRTH" Wavemeter. Old unit in lovely oak case. Label reads: WAVE METER, Bureau of Standards. Type L, Serial No. 38. Range 1500 - 20,000 Meters. Manufactured by John Firth, 81 New St. New York-TRADED.

1 HAND CRANKED DEMONSTRATION GENERATOR: This large old hand cranked generator has both slip rings for generating AC, and a commutator for generating DC. Made by Central Scientific. -TRADED

1 Very unusual HAND-MADE VOLTMETER with unusual tapered pole piece.

1 WESTON neck-worn model 280 multimeter for hands-off operation.

1 LEEDS & NORTHRUP 78770 Ultra high voltage double pole, double throw knife switch on very old hard rubber base.-TRADED.


6. TUBES AND RELATED ITEMS:

1 LARGE VERY VERY EARLY X-RAY TUBE. - TRADED.

MEDIUM SIZE VERY EARLY X-RAY TUBE. - TRADED.

1 CROOKES TUBE with travelling & rotating moving paddle wheel. TRADED

1 CROOKES TUBE with horizontal rotating moving paddle whee.-TRADED.

1 CROOKES TUBE with vertical rotating moving paddle & glass base.-TRADED

1 MALTESE CROSS EARLY RAY TUBE. -TRADED.

1 EARLY TUBE WITH ROCKS THAT GLOW WHEN ELECTRICITY IS APPLIED. -TRADED

PHOTOGRAPH OF 6 OF THE ABOVE TUBES: (164KB)

1 ELECTRICAL TESTING LABS. Photometric Standard Lamp # 9351. A calibrated and numbered lamp in a fitted wooden box. - TRADED.

1 SIGNAL CORPS VT-1 TUBE (Traded out)

1 WESTERN ELECTRIC 102 Golf-ball tube. (Traded out)

1 KELLOGG type 403 tube. (Traded)

2 FRANKE - HERTZ tubes. (Traded out)

1 CATHODE RAY TUBE GUN ASSEMBLY PROTOTYPE in glass tube neck with uncut connecting leads. - TRADED.


7. OPTICAL INSTRUMENTS

BUFF THEODOLITE:(25KB)

BUFF THEODOLITE AND CASE:(30KB)

LARGE PRISM SPECTROMETER:(15KB)

PHOTOMETER:(20KB)
Another view of the photometer:(15KB)


8. MISCELANEOUS AND ODDITIES, ETC.

19th CENTURY SALESMAN'S SAMPLE TOWN FIRE PUMP:(23KB) This small working model of a 19th Century center-of-town-mounted Fire Pump was used to demonstrate how the pump works for prospective purchasers. The completed full size pump measures about 20 feet by 8 feet. The glass trough is filled with water and at least two firemen pump the handles on each of the trough in an up-and-down motion to spray water on the fire.-traded.
Another view of the salesman's sample fire pump:(26KB)

ORIGINAL PATENT MODEL OF EARLY WINDOW SCREEN:(14KB) This is an original model which was submitted in support of a patent number 213,091 which was granted on March 11, 1879. The patent model was stored in the US patent office until recently. The patent covers an improvement to a window-mounted window screen which allowed the screen to be tightened through the use of a concealed roller.-traded.
Closer view of the model:(15KB)
Closer view of the patent:(10KB)

1 CURTA MODEL 1 POCKET CALCULATOR:(29KB) This is a most complex mechanical pocket calculator with elaborate internal gear systems. Complete with original plastic carrying case and instruction manual. Traded 12-17-97.


9. SCIENTIFIC INSTRUMENT SHOWS, PUBLICATIONS, AND DEALERS:

Tom Perera at the 1996 AWA show in Rochester, NY:(38KB) This photograph was taken by Austrian collector Dr. Franz Pichler.

The AWA or Antique Wireless Association show is held every August in Rochester, NY. Membership in the AWA is $ 15 per year and the address is: Post Office Box E, Breesport, NY 14816. The website is: http://www.antiquewireless.org

ANTIQUE SCIENTIFIC INSTRUMENT FAIR: This big show WAS held semi-annually in Central New Jersey and run by Marvin Hurvitz. It is no longer in operation.
A photograph taken at the October 4, 1998 show:(15KB)
A photograph taken at the October, 1999 show:(35KB)
A photograph taken at the October, 2000 show:(20KB)

SCIENTIFIC, MEDICAL, AND MECHANICAL ANTIQUES - ISSN: 1080-2088: This publication contains interesting articles and advertisements and lists the important scientific instrument shows in the USA.
Subscription is $ 24 per year.
Greybird Publishing, PO. Box 412, Taneytown, MD. 21784.

THE GEMMARY: Dealer in Scientific Instruments:
P.O.Box 2560, Fallbrook, CA 92088. (619) 728-3321
Online Internet Catalog: http://www.gemmary.com/rcb/


LINKS TO MY OTHER SCIENTIFIC INSTRUMENT-RELATED MUSEUMS:

TELEGRAPH AND SCIENTIFIC INSTRUMENT CYBER-MUSEUMS, HISTORY AND COLLECTING (2KB)
The main museum page.

MUSEUM OF THE HISTORY OF PSYCHOLOGICAL INSTRUMENTATION (4KB)

THE BARNARD COLLEGE HISTORY OF PSYCHOLOGY COLLECTION (2KB)



Professor Tom Perera
Montclair State University

Internet On-Line Telegraph & Scientific Instrument Museum:
http://w1tp.com
or:
http://www.chss.montclair.edu/~pererat/telegrap.htm
Internet ENIGMA Museum: http://w1tp.com/enigma