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Physics > Heat and Thermodynamics
 
BALL AND RING APPARATUS   (1321)

A brass ball 25mm dia with a metal chain attached to wooden handle which holds a metal ring on a rod. Cool Ball passes through the ring but hot will not pass through.


BAR AND GAUGE   (1322)

A brass casted gauge with wooden handle sliding fit over ends of a bar 110 x 12mm dia. The gauge has two holes of l2mm. dia. in both the arms. The bar is held by a metal rod fixed into a wooden handle.


BAR BREAKING APPARATUS   (1323)

To show the force of contraction or expansion. A heavy cast iron base with 4 uprights, an iron rod one end of which is screwed by a hand nut. The other end is drilled with holes to carry a 75 x 6mm cast iron rod bearing against narrow flats.


HYPSOMETER   (1324)

To determine the upper fixed point of thermometers and boiling points at barometer pressure. Comprises an upper boiling vessel with a steam jacketed inner tube. A lid with a tubular projection is provided which holds the thermometer in a rubber bung. A side outlet draining tube and a glass manometric tube mounted in a tubular with bung. Made of copper sheet. Size 300 x 75mm dia.


HOPE’S APPARATUS   (1325)

Made of GI sheet 50mm dia x 300mm height mounted on a base having 2 tube inlets for thermometers, with a gallery of 60mm Ht. x 150mm dia. for placing mixture of ice and salt. Complete with bungs and thermometers.


EXPANSION APPARATUS   (1326)

Comprising two iron casted stand of 180 mm height joined by 2 chrome plated rods, with an expansion rod, length 380 mm, fixed on one stand and resting on a Friction Pointer placed at the other. With graduated scale 0-90 with 3 expansion bars of Iron, Aluminium and Brass.


LINEAR EXPANSION APPARATUS   (1327)

A 50cm long 2.5cm dia brass nickel plated pipe with inlet and outlet tubes for steam and an opening for thermometer is fitted with a metal rod and is held on a metal frame work. The expansion of the metal rod is recorded by a spherometer. Two 4mm socket of screw. Supplied with three different metal experiment rods.



PRECISION LINEAR EXPANSION APPARATUS   (1328)

Ideal for collage level. Allows students to determine the coefficient of expansion for a variety of metals and is 10 times more accurate than other models. Designed with a dial indicator gauge that has high-contrast numerals sensitive to 1/100 mm and a heat shield between the tube and base to ensure accurate reading. Unit comes completely assembled and includes 4 expansion rods (steel, brass, aluminium, copper).


COMPOUND STRIPS   (1329)

For demonstrating the differential expansion of two different metals. One each brass and iron plates 350mm x 35mm riveted together from end to end with wooden handle.


STEAM GENERATOR   (1334)

Copper, cylindrical vessel 280 x 115 mm overall height x diameter, capacity 1.5 liters, neck 23 mm dia. With riffled side tube 9.5 mm maximum outer dia. and water gauge.


CONDUCTIVITY APPARATUS   (1335)

Comprises four metal strips of copper, brass, aluminium and iron of 100 x l5mm size having cavities at outer ends screwed on a wooden ring 125mm dia meeting in the center.



INGEN-HAUZ APPARATUS   (1336)

Comprises a metal tank 150 x 90 x 100mm L x B x H has six orifices on one side through which 100 x 3mm L X H dia metal rods of different metals pass. The outer end of each rod has a cavity to support wax.


THERMAL CONDUCTIVITY KIT   (1337)

A set of 6 different metals, material rods of size 250x3 mm length x dia of copper, brass, aluminium iron and borosilicate glass. Set consists of 8 rods each packed in a card box.



CALORIMETER   (1338)

A copper calorimeter 75 x 50mm fitted with bakelite top cover with a hole for thermometer and two terminals for connecting to a heating coil and a stirrer of copper wire.


CALORIMETER SET   (1339)

Consisting of a spun copper cylinder 75 x 50mm dia contained within a large 75mm dia x 100mm aluminium outer vessel with l0mm of insulating material in between. Supplied with bung for thermometer, a stirrer and an adjustable thermometer support clip.


JOULE’S CALORIMETER   (1340)

Comprises a nickel plated 50mm dia x 75mm copper vessel housed in wooden box fitted with bakelite top with a hole for thermometer and two terminals connected to a heating coil. A thermometer support clip is provided on a rod fitted to the wooden box.


METAL BLOCK CALORIMETERS   (1341)

For the experimental determination of the specific heat capacity of different matala. Cylindrical metal blocks, mass 1 kg. adjusted to an accuracy of ±2%.



LATENT HEAT OF STEAM APPARATUS   (1342)

Comprising a thick brass calorimeter, a bung with steam inlet and outlet glass tubes, a felt cover, complete with 2 liter tin plate boiler with bung to take the steam tube which connects to the calorimeter.



CYLINDERS SET EQUAL IN SIZE   (1343)

A set of 6 metal cylinders 40x10 mm dia of copper, brass, iron, zinc, lead and
aluminium, packed in card box. Each is drilled for suspension.



CYLINDERS SET EQUAL IN MASS   (1344)

A set of 6 metals copper, brass, aluminium, zinc, iron and lead of 100 gms and are drilled for suspension.



ETHER THERMOSCOPE   (1345)

For determining thermal radiation with bulb 30mm dia approx. one bulb painted matt black. Partially evacuated.



SEARLE'S APPARATUS   (1346)

Cylindrical copper rod 300 mm length 25 mm dia., one end containing a steam chamber connected to inlet and outlet tubes, other end of copper rod has cavity connected via thermometer pockets to water inlet and outlet tubes. Through two thermometers support tubes 75 mm apart are inserted in the rod for finding the temperature at two points. Fitted in teakwood polished case packed with felt with removable front, WITHOUT thermometers.


THERMOSCOPE ETHER   (1347)

For detecting thermal radiation. With bulbs approx. 33mm diameter, one bulb painted matt black. Apparatus partially evacuated, mounted on wooden stand.
a. As above but without stand.



CHARLE’S LAW APPARATUS   (1348)

Glass U-tube 14mm dia with one plane limb 22cm long and one graduated limb, overall length 12 cm. Limb graduated 25-35ml x 0.2ml terminating in a bulb 37mm diameter with third limb 18.5 cm x 6 mm length x bore, joined at right angles to the plain of the other two. Short length of rubber tubing with two pinch clips on short length of glass tubing mounted in end of wide bore plain limb with rubber bu ng. With tall form Corning glass beaker 800 ml. capacity and stirrer, but without thermometer.



CONSTANT VOLUME AIR THERMOMETER   (1349)

Consists of a polished teakwood stand approx. 750mm height fitted with a wooden scale reading from 0 to 60cm x 1mm and supporting an adjustable mercury reservoir by a metal rod. A detachable air thermometer bulb about 70mm dia, connected via three way stopcock to mercury tube with zero index fused inside its upper end. A metal vessel surrounding the bulb supported by detachable metal shelf mounted on insulating asbestos screen. Mounted on a teakwood stand with a deep tray which serves to catch any mercury which has accidentally spilled from the reservoir. Supplied complete with one meter of rubber pressure tubing l0mm O.D. 1x5 mm bore for connecting the reservoir to the bulb (about 750gm of mercury is required) without mercury.


SPOUTING CYLINDER   (1350)

Demonstrates variation of pressure of liquids with depth. Consists of a well-painted, metallic cylinder with three orifices of th e same size but all different heights, one beow


CROOKES RADIOMETER SINGLE   (1351)

Evacuated glass bulb of approx. 70mm dia having fine pivot at its center which supports four light-weight vane of mica l0mm square approx. and black on one surface. Mounted on a backelite stand. When exposed to sunlight or bright lamp, the rotor rotates rapidly.



CROOKES RADIOMETER DOUBLE   (1352)

Construction is same as above but having two bulbs with 2 sets of vane, when exposed to sunlight the vanes rotate in opposite directions.


HANDWHEEL DRIVING UNIT   (1353)

The driving and output pulleys are both 75mm diameter, and the intermediate pulley is 20mm diameter giving a step up ratio of 3.75. Mounted on base. Dimenions of laminated wooden base 155 x 105mm.


FLY WHEEL UNIT   (1354)

For use with a large motor/generator and a lamp unit to demonstrate the conversion of electric energy to kinetic energy and than back again. comprising of an iron fly wheel 115mm dia, mass 1.2kg. mounted in cast brackets with nylon bearings. The shaft has an aluminium 'V' shape pulley 44mm dia for driving with the spring belt supplied


LINE SHAFT UNIT   (1355)

For showing the conversion from electrical energy, via mechanical, to potential energy by winding up a weight on a cord. Th e falling weight is than used to drive the generator and light a lamp showing the reversal of conversion cycle. One end of the 6mm steel shaft carries a aluminium 'V' pulley 56mm dia, and the other end is fitted with a cord anchoring collar. Dimensions: 220x100x115mm high. Supplied complete with driving belt.


VENTILATION APPARATUS   (1356)

For demonstration of convection of Gases. Comprising a metal box 250x75x75mm length x width x height with a removable glass front and 2 detachable glass chimneys mounted in clips.


TWO-STROKE DIESEL ENGINE   (1357)

A model of two-stroke diesel engine similar as above. Ignition is shown by means of a miniature bulb. Fuel supply is also sectioned. With hand crank, provided for manual operation. Mounted on base, with printed diagram showing working.



FOUR-STROKE DIESEL ENGINE   (1358)

A model of four-stroke water-cooled diesel engine. This is of the chain-driven overhead camshaft type. And all functional components like camshaft, rocker -arms, tappets etc. are clearly demonstrated. The functioning of fuel injection syste m is also represented. Ignition is shown by means of a miniature bulb. Mounted on b ase, with printed diagram showing working.



AIR THERMOMETER CONSTANT VOLUME   (1359)

With detachable air thermometer bulb 40mm dia. approx. Connected via three way stopcock to mercury tube. Reservoir tube sliding on vertical clamping rod a long side boxwood scale graduated to 0-50mmx1mm. Copper vessel100x75mm surrounding the bulb supported by detachable shelf mounted on insulating asbestos screen wood polished stand. Mounted on wood stand with base in the form of mercury tray. All glass parts made from Corning Glass. Complete with pressure rubber tubing and copper vessel.



ENERGY TRANSFER APPARATUS (MALVERN)   (1360)

The Malvern Energy transfer kit comprises a number of separately available units which enable the user to show qualitatively energy conversion from one form of energy to another in a variety of different ways. All units are carried on a standard 165x100mm base and provided with 4mm socket terminals where appropriate.



LARGE MOTOR/GENERATOR   (1360-A)

For use as a driving unit or dynamo. Comprises a 2 to 6V D.C. motor provided with a 15mm dia. 'V' pulley. Supplied with driving belt.


SMALL MOTOR/GENERATOR   (1360-B)

For use with a large motor/generator in comparing power input and output by driving each in turn with the other and metering the voltage and currents.


LAMP UNIT TRIPLE   (1360-C)

For use with a large motor/generators to give an indication of their output when used as dynamos. The lamp holders are connected in parallel. Supplied with three lamps 3.5V 0.25A, M.E.S.


FLY WHEEL UNIT   (1360-D)

For use with a large motor/generator and a lamp unit to demonstrate the conversion of electrical energy to kinetic energy and then back again. Comprising an iron flywheel 115mm dia., mass 1.2kg, mounted in a cast brackets with bearings. The shaft has an aluminium 'V' pulley 44m dia, for driving with the spring belt supplied.


LINE SHAFT UNIT   (1360-E)

For showing the conversion from electrical energy, via mechanical, to potential energy by winding up a weight on a cord. One end of the 6mm steel shaft carries an aluminium 'V' pulley 56mm dia, and the other end is fitted with a cord anchoring collar. Supplied complete with driving belt.


DEMONSTRATION PETROL ENGINE 4 STROKE   (1361)

A one cylinder, 4 cycled and double valve system gas engine, showing all the operations including intake, compression, explosion, exhaust, advanced and retarded spark etc. A lamp (3 volts) indicates the spark plug, with battery, fitted on wooden polished base. Overall Dimensions: 250 x 140 x 150 mm length x width x height approx.



GAS TURBINE/TURBOJET ENGINE   (1362)

The section cut model is constructed of light and strong metal showing air intake, axial flow, double stage compressor, fuel supply, combustion chamber, turbine rotar, jet thrust, exhaust etc. Complete on base, with printed diagram showing working.


WANKEL ENGINE   (1363)

The model demonstrates the principle operation. It is cut way to show the internal constructional details. Unlike other engines the rotary piston engine avoids reciprocating parts. The power piston is an arch like triangular rotar which on rotating generates an epitrechoid. Mounted on base, with printed diagram showing working.


STEAM ENGINE SECTIONAL DEMONSTRATION MODEL   (1364)

Locomotive design showing cross section of the piston and sliding valve as positioned in the steam chamber (cylinder), clearly visible through air tight glass front and movement of these parts are smooth enough to demonstrate working even by blowing. Other parts are also clearly visible such as crank-shaft, valve control, drive wheel etc. All brass parts (except fly wheel) are C.F, mounted on heavy metal base synthetic hammer finish. Overall dimensions: 375 x 95 x 160 mm length x width x height approx.


STEAM ENGINE FACTORY MODEL   (1365)

Capable of running a small dynamo to light the lamp with the help of its fly wheel and driving gear. Complete-with pressure gauge, whistle and safety valve. The model is mounted on thick metal sheet base synthetic hammer finish.
Overall Dimensions: 410 x 325 x 370 mm length x width x height approx.


STEAM ENGINE (SMALL)   (1366)

Demonstration working model with oscillating cylinder, safety valve and whistle, mounted on metal base with spirit lamp with wick. Overall Dimensions: 195 x 145 x 170 mm length x width x height approx. The above list does not include the entire range of instruments available, please feel free to request other items throughout this field.


HERO’S ENGINE   (1367)

Illustrates the principles behind the world's oldest steam engine. It is constructed of sturdy metal and is supported by a weighted stand that eliminates the problems of hanging chains and breakable glass flasks. Fill half full of water and gently heat with Bunsen burner to observe rotation as steam escapes from the jets mounted on the sides of the boiler.


HERO'S ENGINE (EOLIPILE)   (1368)

A functional glass model of the earliest form of steam turbine. Comprising a borosilicate glass bulb 70 mm diameter approximately, with side arms bent at right angles and formed into jets at their tips. The bulb is carried upon a metal stand which 3 leaves it free to rotate about its horizontal axis. If about 25 to 30 cm of water are introduced into the bulb and boiled the issuing steam causes rapid rotation. Supplied complete on stand but WITHOUT burner.
Dimensions of base 180 x 120 mm.
A. Spare glass Bulb for above.
B. As above, but supplied with wooden stand.


THERMOMETERS, MERCURY, WHITE SHELL BACKED   (1369)

Packed in cardboard case.
RangeGraduationLength
a.0 to 50ºC300 mm
b.-10 to 110ºC300 mm
c.-10 to 110ºC½º300 mm
d.0 to 150ºC300 mm
e.0 to 200ºC300 mm
f.0 to 250ºC300 mm
g.0 to 300ºC300 mm
h.0 to 360ºC300 mm
i.0 to 400ºC300 mm
j.0 to 120ºF300 mm
k.0 to 220ºF300 mm
l.0 to 400ºF300 mm



THERMOMETER, RED SPIRIT FILLED   (1370)

RangeGraduationLength
a.0 to 50ºC300 mm
b.-10 to 110ºC300 mm
c.-10 to 110ºC½º300 mm
d.0 to 150ºC300 mm
e.0 to 200ºC300 mm
f.0 to 250ºC300 mm
g.0 to 300ºC300 mm
h.0 to 360ºC300 mm
i.0 to 400ºC300 mm
j.0 to 120ºF300 mm
k.0 to 220ºF300 mm
l.0 to 400ºF300 mm


THERMOMETER, WALL, CELSIUS AND FAHRENHEIT   (1371)

Comprises red spirit filled magnifying lens tube in wooden frame with black engraved markings and figures.
Range: -20º to +50ºCx1ºC,  -20ºF to 120ºFx2ºF.
a. As above, but scale printed on aluminium sheet which is fixed on wooden base.
b. As above, but scale printed on plastic, made of all plastic.



THERMOMETER, MAXIMUM AND MINIMUM   (1372)

All plastic, good quality, range -20º to 120ºF and -10º to 50ºC x 1ºC.


HEAT TRANSFER KIT   (1373)

Used to observe and measure heat transfer. Consists of 2 insulated containers with lids, an aluminum transfer bar, thermometer, and instructions.




 
 
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