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c08b813b2bc715f740ceb2f29b6b8319
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
MEEM
Description
An account of the resource
Historic scientific instruments held by the Department of Mechanical Engineering and Engineering Mechanics, Michigan Technological University, Houghton, MI, USA.
Physical Object
Use this field for any solid object.
Physical Dimensions
The actual physical size of the original image
Tracer arm: 2.25 cm width x 25.5 cm length x 3.5 cm depth
Body: 23.5 cm length x 6 cm width x 2.25 cm depth
Materials
Device: Steel, Bronze, and Silver
Case: Leather and Felt
Maker
Keuffel and Esser Co., Hoboken, NJ
Inscriptions
To the left: K&E 4242 Compensating Polar Planimeter | When Tracer Arm is set to: 2024 | One revolution of dial = 100.00 sq. in. | One revolution of wheel = 10.00 “ “ | Distance between wheel Nos. = 1.00 “ “ | Distance between graduations = 0.10 “ “ | One unit on Vernier = 0.01 “ “ | Standard setting of Pole Arm for measuring in square inches, | ”pole inside figure”. 30.79 | See instructions for other settings of arms | 12,806-9. Keuffel & Esser Co. <br /><br />To the right: Serial NO. | 109768 | 32.35 | 1000.0 sq. cm. | 100.0 “ “ | 100.0 “ “ | 10.0 “ “ | 1.0 “ “ | 0.1 “ “
History of the Object
This object's history is connected to the model number "4242". The Keuffel & Esser Company of New York sold this instrument model from 1901 to 1972. The price was $46.50 in 1909, $33.50 in 1915, and $55.00 in 1921; presumably, World War I affected Coradi's ability to export planimeters. By 1936, a German firm was manufacturing model 4242 for K&E's Paragon product line. Compare to 1998.0032.03. See 1991.0882.02 for a later instruction manual.
Location
The location of the interview
Mechanical Engineering-Engineering Mechanics Building, 3rd Floor, Second Case from the Left
Bibliography
Clark McCoy, "Collection of Pages from K&E Catalogs for the 4242 Family of Polar Planimeters," http://www.mccoys-kecatalogs.com/PlanimeterModels/ke4242family.htm;
Catalogue of Keuffel & Esser, 33rd ed. (New York, 1909), 322;
Catalogue of Keuffel & Esser, 35th ed. (New York, 1915), 315;
Catalogue of Keuffel & Esser, 36th ed. (New York, 1921), 257;
Catalogue of Keuffel & Esser, 38th ed. (New York, 1936), 340.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Language
A language of the resource
English
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Mechanical Engineering-Engineering Mechanics Building, 3rd Floor, Second Case from the Left
Title
A name given to the resource
4242 compensating polar planimeter
Subject
The topic of the resource
Engineering; Mathematics
Description
An account of the resource
<strong>Physical Description</strong>: The Keuffel and Esser polar planimeter is composed of two individual pieces. One being the main body, and the other a tracer arm. Both sections are comprised of tarnished silver square rods with black markings indicating distance in millimeter; these rods being made of some black painted metal. Two dials are attached to the main body or larger section; one is horizontal, the other vertical. These dials are made of black painted metal with white lines and white numbers. The tracer arm is composed of a long square sections with a large balled pin on one end, and a large cylindrical mass on the other end that has a small pin on the bottom. The main body has a long square rod made of tarnished silver, with a black painted metal portion attached. This metal portion holds the aforementioned two dials. On the end of the silver square rod is a spike, this being attached to the rod via a black metal tab. The tracer arm and main body are combined by inserting the large balled pin into a hole on the surface of the main body. The object's case is a black rectangular box with a metallic clip latch. The inside of the case is lined with pear green felt material. On the inside of the lid is a white paper card with black old-style lettering. Inside the case and screwed to the bottom is a bronze stamped nameplate. <br /><br /><strong>Functional Description</strong>: The planimeter was used to measure the area of a 2d surface. It did this by having a tracer arm that remained stationary about a point, while the main body rotated and translated with the area’s curve. The dials attached measured the rotation and translation, and the resulting values could be used to calculate the area of the section enclosed by the device.
Date
A point or period of time associated with an event in the lifecycle of the resource
1901-1936
Format
The file format, physical medium, or dimensions of the resource
physical object
Creator
An entity primarily responsible for making the resource
Cooper Sheldon, John Wyrzykowski, Ben Weigand, Nick Silvestri
-
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6e689993e9fe5cf310cc1175b2145231
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
A.E. Seaman Mineral Museum
Description
An account of the resource
Historic scientific instruments held by the A.E. Seaman Mineral Museum, Michigan Technological University, Houghton, MI, USA.
Physical Object
Use this field for any solid object.
Physical Dimensions
The actual physical size of the original image
Mortar: Base: 2cm Top: 3.5cm Height: 2cm Pestle: length: 4cm diameter: 8mm, 1.5cm
Materials
sonte (agate)
Maker
unknown
Inscriptions
none
Location
The location of the interview
A.E. Seaman Mineral Museum
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agate Mortar and Pestle (1/3)
Subject
The topic of the resource
Geology, Mineralogy and Crystallography
Creator
An entity primarily responsible for making the resource
Savannah de Luca
Type
The nature or genre of the resource
Physical object
Identifier
An unambiguous reference to the resource within a given context
none
Description
An account of the resource
<strong>Physical Description</strong><br />There are three unique agate mortar and pestles at A.E. Seaman Mineral Museum. The largest mortar measures three centimeters in diameter at the base, while the matching pestle measures five centimeters in length. This mortar and pestle set is a light brown color with translucent areas. The pestle is lighter than the mortar. Both are cut from agate, which gives the set a marbled and inconsistent color pattern. The mortar is a rounded bowl on the inside, but the outside edges form an octagonal shape. Each end of the pestle is rounded; one end of the pestle is smaller in diameter than the other by four and one half centimeters. <br /><br /><strong>Functional Description</strong> <br />The mortar and pestle has been used in laboratories for centuries for grinding and crushing various substances. This mortar and pestle is still in use for grinding powders for X-Ray diffraction. The mortar is shaped like a bowl in order to hold a certain amount of the substance to be ground. The pestle is then used to mash and grind the substance in the bowl until the desired consistency is reached. The agate mortar and pestle is used in circumstances where cross contamination must be avoided. This is because agate is one of the finest, most non-porous natural materials available for a grinding surface. Bacteria, contaminants, and other particles cannot penetrate the material.
Date
A point or period of time associated with an event in the lifecycle of the resource
unknown
Language
A language of the resource
n/a
-
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c525b4593875d2266b70f2f40b7a6edf
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
A.E. Seaman Mineral Museum
Description
An account of the resource
Historic scientific instruments held by the A.E. Seaman Mineral Museum, Michigan Technological University, Houghton, MI, USA.
Physical Object
Use this field for any solid object.
Physical Dimensions
The actual physical size of the original image
Mortar: Base: 3cm Top: 6cm Height:3cm Pestle: Length: 5cm Diameter: 6mm, 1.5 cm
Materials
Agate
Maker
unknown
Inscriptions
none
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agate Mortar and Pestle (1/3)
Subject
The topic of the resource
Mineralogy, Geology, Chemistry
Description
An account of the resource
<h2 dir="ltr"><span>Physical Description</span></h2>
<p dir="ltr"><span>There are three unique agate mortar and pestles at A.E. Seaman Mineral Museum. The largest mortar measures three centimeters in diameter at the base, while the matching pestle measures five centimeters in length. This mortar and pestle set is a light brown color with translucent areas. The pestle is lighter than the mortar. Both are cut from agate, which gives the set a marbled and inconsistent color pattern. The mortar is a rounded bowl on the inside, but the outside edges form an octagonal shape. Each end of the pestle is rounded; one end of the pestle is smaller in diameter than the other by four and one half centimeters.</span></p>
<h2 dir="ltr"><span>Functional Description</span></h2>
<p dir="ltr"><span>The mortar and pestle has been used in laboratories for centuries for grinding and crushing various substances. This mortar and pestle is still in use for grinding powders for X-ray diffraction. The mortar is shaped like a bowl in order to hold a certain amount of the substance to be ground. The pestle is then used to mash and grind the substance in the bowl until the desired consistency is reached. The agate mortar and pestle is used in circumstances where cross contamination must be avoided. This is because agate is one of the finest, most non-porous natural materials available for a grinding surface. Bacteria, contaminants, and other particles cannot penetrate the material. </span></p>
Creator
An entity primarily responsible for making the resource
Savannah de Luca
Language
A language of the resource
n/a
Type
The nature or genre of the resource
Physical object
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93b6c3ff493855a7af1efad8bd288feb
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
A.E. Seaman Mineral Museum
Description
An account of the resource
Historic scientific instruments held by the A.E. Seaman Mineral Museum, Michigan Technological University, Houghton, MI, USA.
Physical Object
Use this field for any solid object.
Physical Dimensions
The actual physical size of the original image
Mortar: Base: 2.5cm Top:4cm Height: 2cm Pestle: Length: 5cm diameter: 5 mm, 1 cm
Materials
Agate
Inscriptions
none
Location
The location of the interview
A.E. Seaman Mineral Museum
Maker
unknown
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agate Mortar and Pestle (2/3)
Subject
The topic of the resource
Mineralogy
Description
An account of the resource
<h2>Physical Description</h2>
There are three unique agate mortar and pestles at A.E. Seaman Mineral Museum. The second largest mortar measures two and one half centimeters in diameter at the base, while the matching pestle measures five centimeters in length. This mortar and pestle set is light pink and white colored with translucent areas. The pestle is a brown-orange at the ends. Both are cut from agate, which gives the set a marbled and inconsistent color pattern. The mortar is a rounded bowl on the inside, but the outside edges form an octagonal shape. Each end of the pestle is rounded; one end of the pestle is smaller in diameter than the other by four centimeters.
<h2>Functional Description</h2>
The mortar and pestle has been used in laboratories for centuries for grinding and crushing various substances. This mortar and pestle is still in use for grinding powders for X-Ray diffraction. The mortar is shaped like a bowl in order to hold a certain amount of the substance to be ground. The pestle is then used to mash and grind the substance in the bowl until the desired consistency is reached. The agate mortar and pestle is used in circumstances where cross contamination must be avoided. This is because agate is one of the finest, most non-porous natural materials available for a grinding surface. Bacteria, contaminants, and other particles cannot penetrate the material.
Creator
An entity primarily responsible for making the resource
Savannah de Luca
Language
A language of the resource
n/a
Type
The nature or genre of the resource
Physical object
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
A.E. Seaman Mineral Museum
Description
An account of the resource
Historic scientific instruments held by the A.E. Seaman Mineral Museum, Michigan Technological University, Houghton, MI, USA.
Physical Object
Use this field for any solid object.
Physical Dimensions
The actual physical size of the original image
Mortar: Base: 3cm Top: 6cm Height:3cm Pestle: Length: 5cm Diameter: 6mm, 1.5 cm
Inscriptions
none
Materials
agate
Maker
unknown
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agate Mortar and Pestle (3/3)
Description
An account of the resource
<h2>Physical Description</h2>
There are three unique agate mortar and pestles at A.E. Seaman Mineral Museum. The smallest mortar measures two centimeters in diameter at the base, while the matching pestle measures four centimeters in length. This mortar and pestle set is creamy white and orange–brown colored, with translucent areas. The pestle has a large diameter of eight millimeters, when compared to the other mortar and pestles. Both are cut from agate, which gives the set a marbled and inconsistent color pattern. The mortar is a rounded bowl on the inside, but the outside edges form an octagonal shape. Each end of the pestle is rounded; one end of the pestle is smaller in diameter than the other by four and one half centimeters.
<h2>Functional Description</h2>
The mortar and pestle has been used in laboratories for centuries for grinding and crushing various substances. This mortar and pestle is still in use for grinding powders for X-Ray diffraction. The mortar is shaped like a bowl in order to hold a certain amount of the substance to be ground. The pestle is then used to mash and grind the substance in the bowl until the desired consistency is reached. The agate mortar and pestle is used in circumstances where cross contamination must be avoided. This is because agate is one of the finest, most non-porous natural materials available for a grinding surface. Bacteria, contaminants, and other particles cannot penetrate the material.
Creator
An entity primarily responsible for making the resource
Savannah de Luca
Language
A language of the resource
n/a
Type
The nature or genre of the resource
Physical object
-
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Alumni House
Description
An account of the resource
Historic scientific instruments held by Alumni Affairs, Michigan Technological University, Houghton, MI, USA.
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Original Format
The type of object, such as painting, sculpture, paper, photo, and additional data
soft leather bound volume
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Ainsworth's Manual
Subject
The topic of the resource
Engineering
Robert A. Neault ('38) Collection
Creator
An entity primarily responsible for making the resource
Steven A. Walton
Date
A point or period of time associated with an event in the lifecycle of the resource
1911
Format
The file format, physical medium, or dimensions of the resource
Text
Language
A language of the resource
English
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
MEEM
Description
An account of the resource
Historic scientific instruments held by the Department of Mechanical Engineering and Engineering Mechanics, Michigan Technological University, Houghton, MI, USA.
Physical Object
Use this field for any solid object.
Physical Dimensions
The actual physical size of the original image
Box: 285 x 240 x 207 mm
Cylinders: height of 90 mm, diam. 50 mm
Springs: 53-63 mm long
Valves: thread sizes of 20 and 25 mm
Materials
Indicator: bronze, steel, rope, graphite
Box: Wood, brass
Maker
American Steam Gauge Co., Boston, MA.
Location
The location of the interview
MEEM, 3rd floor display case
Inscriptions
AMERICAN | STEAM GAUGE &. V. MFG.CO | BOSTON, U.S.A. | PAT'D. JAN. 31. 1899. | PAT'D. JUNE 7. 1904 | J.W. THOMPSON | PAT'D AUG. 31. 75 | 4994 [Indicator]<br /><br />312 | 25 [Cylinder]<br /><br />4994 [Box]<br /><br />10 | 20 | 30 | 40 | 60 | 80 [Springs]
History of the Object
<p dir="ltr"><span>The object was made by the firm the American Steam Gauge Company of Boston, MA. The indicator was initially invented by James Watt, who also is credited with the invention of the steam engine. Joseph Thompson is the creator of this steam engine indicator with his patent being granted on Aug 31, 1875. The instrument was manufactured by The American Steam Gauge Company, which was founded in 1851. The instrument was sold as the “American Thompson Improved Indicator”, and was considered to be high end among steam indicators of the time. The improvements of the Thompson indicator over previous models were that the writing component followed an elliptical pattern to maintain a straight line on the recording barrel. This resulted in less inertia and increased the engine speeds, and pressures that the indicator could be used at. The patent granted in 1904 to Earl Vaughn had the benefits of making the indicator easier to disassemble for adaptability of the indicator. For this reason it is believed that this indicator was manufactured sometime after 1904.</span></p>
Bibliography
<p dir="ltr"><span>"The Story of the Steam Engine Indicator." last modified July/August 2001 http://www.farmcollector.com/steam-traction/story-steam-engine-indicator</span></p>
<p dir="ltr"><span><em>Engineer: with which is incorporated steam engineering, volume 35</em> ..</span><span> Vol. 42. (Chicago: The Engineer Publishing Company, 1905). </span></p>
<p dir="ltr"><span>Dorn, Harold. </span><em>Dictionary of Scientific Biography</em><span>. Vol. 14. (New York: Charles Scribner's Sons, 1976), 196-99.</span></p>
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
American Thompson Steam Gauge
Description
An account of the resource
Physical Description:<br /><p dir="ltr"><span>The Thompson Improved Steam Indicator comes in a dark stained wooden box 285mm wide, 207mm deep, and 240mm tall. It opens about halfway up its height to reveal a number of objects. The box, as well as various components, are serial numbered 4994. Inside the box there are pockets as well as mounts for the various objects to go into which can be seen in the images provided.</span></p>
<p dir="ltr"><span>In the center is the steam indicator, which resembles two off-center attached cylinders screwed onto a mount. The cylinders are both 90mm in height and 50mm in diameter. The top cylinder has a slot to affix a cardstock, a stylus arm and pull string. The bottom cylinder has the arm holding the stylus and a spring inside to control the stylus arm. The bottom of the bottom cylinder has threads and ties to the mount on the bottom of the box, as well as thumb bars on the bottom to attach or unattach it by hand.</span></p>
<p dir="ltr"><span>The steam indicator comes with 6 springs numbered 10, 20, 30, 40, 60, and 80, which range in length from 53-63mm long. These springs are threaded onto mounts on the upper half of the box and can replace the spring inside the bottom cylinder of the steam indicator. This allows the system to make more precise graphs depending on the pressure that the engine is putting out.</span></p>
<p dir="ltr"><span>In addition to the above, there are also two globe shut-off valves with thread sizes of 20 and 25mm. The valves come with caps for one side to prevent damage to the threads that could result in inadequate attachment . There is also a torque wrench used to tighten the lower cylinder onto the engine that the indicator will be attached to. There is also a small vial of oil, for the joints of the stylus arm or the springs. There was also a specialized wrench designed to tighten the components in order to prevent gas leaks. The final component was a ruler with a screw driver end that allowed for the dismantling of the indicator as well as measuring the height of the graphs drawn by the arm allowing the user to find the pressure in the system.</span></p>
<p dir="ltr"><span>Functional Description:<br /></span></p>
<p dir="ltr"><span>In order to use the Thompson steam indicator, the user fastened</span><span> the stainless-steel ball valve to the steam engine being analyzed. The indicator was then be fastened to the open end of the ball valve via a threaded connection. With the ball valve opened, the steam within the engine’s piston</span><span> exerts pressure on a spring enclosed within a 100 mm tall, 30 mm diam. cylinder of the indicator. A plunger connected to the spring is </span><span> </span><span>forced upward depending upon the force received by the spring. The motion of the plunger moves the 80 mm long arm vertically, which determines the markings made by the attached pencil. The pencil marks a piece of paper, which is wrapped around the upper cylinder (90 mm tall and 51 mm dia) of the indicator. Wrapped around this upper cylinder is a string whose function is to rotate the cylinder about its center. If the string were left free to hang, the steam pressure pushes the pencil upward, making a straight vertical line on the paper. However, the string was fastened to a component of the engine to allow for the engine piston and the cylinder to move in unison. The string moves the cylinder of the steam indicator in unison with the piston throughout the entire stroke, and a continuous marking is made to illustrate the pressure at each point of the stroke as the pencil is moved upward and downward while the cylinder pivots throughout the process. Thus, the vertical motion of the pencil graphs changes in pressure, while the rotation of the cylinder indicates the phase of the piston cycle, and so in unison the pencil plots a diagram of the pressure cycle in the engine.</span></p>
<p dir="ltr"><span>The indicator was designed to record the stroke of a steam engine, particularly locomotives. At the start of the stroke, the inlet valve opens completely, allowing the maximum force to be applied to the spring by the steam. The pencil marks a horizontal line at its highest point in the cycle from left to right. At cut-off, the inlet valve closes and expansion of the steam occurs, during which the force gradually decreases. This phase is indicated by a pencil mark resembling an exponential decay curve. At release</span><span>, the exhaust valve opens, releasing the steam and the force is at its minimum, resulting in a straight horizontal pencil mark at the lowest point of the curve—this time from right to left. When the exhaust valve closes, compression occurs, causing a gradual rise in pressure. When the inlet valve opens again, the gradual increase in pressure becomes a sharp increase, causing the pencil to mark a straight vertical line returning to the first point of the cycle when the steam pressure exerts its greatest force on the spring. The end product of this device is a card illustrating the change in pressure throughout the continuous cycle of the steam engine. For an engine operating at 250 RPM, the device could generate one cycle plot (or card) per minute.</span></p>
<p dir="ltr"><span>The spring within the indicator can be replaced with a larger spring to record higher steam engine pressures. The set of springs are marked according to their compressive strength: the spring marked #100 converts the force from 100 psi gauge-pressure</span><span>steam into a pencil movement of one inch, a #80 spring converts 80 psig steam into a movement of one inch, and so on.</span></p>
<p dir="ltr"><span>Though the steam indicator was primarily used on locomotives, it could also be applied to traction engines and artillery</span><span>. Due to the high cost of the indicator, it was seldom used on traction engines beyond the confines of the factory in which it was produced. When applied to heavy artillery, the oil in the recoil chamber would replace the steam as the working fluid and exert a pressure on the spring.</span><span> The string would be fastened to the barrel to allow for the recoil movement to pull on the string.</span></p>
Creator
An entity primarily responsible for making the resource
Elsa Schwartz, Collin Graf, Sarah Hartman, Joel VanLanen, and Patrick Demorest.
Language
A language of the resource
English
Type
The nature or genre of the resource
Physical object
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
United States of America
Date
A point or period of time associated with an event in the lifecycle of the resource
1904
Identifier
An unambiguous reference to the resource within a given context
Serial no. 4994
Subject
The topic of the resource
Steam Engines; Pressure Systems; Artillery
19C
20C
mechanical
-
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Alumni House
Description
An account of the resource
Historic scientific instruments held by Alumni Affairs, Michigan Technological University, Houghton, MI, USA.
Physical Object
Use this field for any solid object.
Materials
Acrylic
Maker
The Frederick Post Co., Chicago, IL
History of the Object
Owned by Robert A. Neault ('38)
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Ames Lettering Instrument 1760
Subject
The topic of the resource
drafting
Robert A. Neault ('38) Collection
Creator
An entity primarily responsible for making the resource
Steven A. Walton
Date
A point or period of time associated with an event in the lifecycle of the resource
1930s?
Format
The file format, physical medium, or dimensions of the resource
Physical Object
Language
A language of the resource
English
-
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Chemistry
Description
An account of the resource
Historic scientific instruments held by the Department of Chemistry, Michigan Technological University, Houghton, MI, USA.
Physical Object
Use this field for any solid object.
Physical Dimensions
The actual physical size of the original image
Case-420x370x220 mm
Scale-190x280 mm
Glass disks-75mm diameter
Materials
Case-Oak and glass, metal feet and handle
Scale-brass, glass disks
Maker
Sargent and Co., Chicago
Inscriptions
SARGENT | E.H. Sargent and Company | 155 East Superior St Chicago
Location
The location of the interview
Chemical Sciences and Engineering, 607 E
Bibliography
Robb, Marlene. "Scales and Balances from the Collection." Newsletter, Orbost and District Historical Society, July 2017.
Worthpoint. "E.H. Sargent Analytical Balance Scale." https://www.worthpoint.com/worthopedia/h-sargent-analytical-balance-scale-253748262
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Assayer's Scale/Apothecary Balance
Subject
The topic of the resource
Chemistry; Metallurgy; Pharmacology
Description
An account of the resource
Physical Description: A rectangular oak case with glass panels stands on adjustable metal feet. The front page of the case is internally counterweighted to be lifted vertically by a metal handle. Inside the case is a brass beam balance with two pans suspended from curved wires. At the base of the stand is a white metal plate with horizontal markings. In front of the balance is a vertical black rod with incremental markings denoted 'milligrams'. The pans hold circular, curved glass disks.
Functional Description: Used to weight an initial sample of crushed ore to conduct an assay. The box prevents dust from accumulating and affecting accuracy of the balance, as well as restrict air flow when the assay is in process. Known standard weights would be placed in the left pan and compared to the weight of the sample in the right. Adjustable feet allowed accurate leveling of the device.
Creator
An entity primarily responsible for making the resource
Larissa Harris; Karen Oppliger
Date
A point or period of time associated with an event in the lifecycle of the resource
c. 1920
Language
A language of the resource
English
Type
The nature or genre of the resource
Physical Object
Identifier
An unambiguous reference to the resource within a given context
MTMC 9995
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
USA (Chicago)
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
School of Technology
Description
An account of the resource
Historic scientific instruments held by the Surveying Department of the Michigan Technological University School of Technology, Houghton, MI, USA.
Physical Object
Use this field for any solid object.
URL
http://www.bicoinc.com/handExtractor.html
Maker
BICO Braun International
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Bico Hand Driven Centrifuge
Subject
The topic of the resource
Civil Engineering
Description
An account of the resource
<strong>Physical Description</strong>: This machine consists of an iron base and an aluminum bowl that is mounted on the base. The bowl consists of a stationary 11” diameter outer bowl and a 9.75” diameter inner bowl that rotates. The inner bowl has a circular aluminum lid that covers the bowl and a brass funnel that screws into a center column of the bowl. The aluminum lid has three different thicknesses. The thickness increases in rings and gets thicker towards the center of the lid. The brass funnel is 3” in height total and has a 1.25” threaded chute. The chute of the funnel is closed off at the end and has two 0.099” diameter holes that pass laterally through the chute. The outer bowl has a brass spout with a 0.34”diameter that extends out of the bottom of the bowl and is 3.25” in length. The outer bowl also has a 11” diameter lid that covers the entirety of the bowl. This lid has a smaller lid with a 4.125” diameter set in the center with a small knob. The outer bowl has a latch at the top that secures the lid. The iron base has four 0.26” diameter holes for mounting to a tabletop. The base also has a crank handle that is used to rotate the inner bowl and extends 12” off the base. The top of the base has a 0.38” diameter black button that pushes in. The bottom of the machine has a base plate that is an 8.5” x 4.5” piece of aluminum covering a same dimensioned piece of rubber and is secured with 6 hex bolts. <br /><br /><strong>Functional Description</strong>: When used for asphalt extraction, the sample is weighed, and placed in the rotating aluminum bowl. A solvent is added, and the bowl is rotated by turning the handle to force all liquid out of the bowl. The process is repeated until all the solvent is forced out of the bowl and the remaining content of the bowl can be weighed and graded. The handle does not currently work to rotate the inner bowl due to an issue in the gearbox in the base of the machine.
Creator
An entity primarily responsible for making the resource
Joe Iwanicki, Clare Biolchini, Virginia Cistaro, Steve Wright
Source
A related resource from which the described resource is derived
Bicoinc.com. (2019) <a href="http://www.bicoinc.com/handExtractor.html">Hand Driven Rotarex – Asphalt Extractor</a>. [Online] Available: [Accessed 18 Nov. 2019].
Date
A point or period of time associated with an event in the lifecycle of the resource
1930-1980
Language
A language of the resource
English
Type
The nature or genre of the resource
Physical Object
Identifier
An unambiguous reference to the resource within a given context
No Accession number