Meeker's
Mechanical
Nature Antiques
Larry and Carole
Meeker

Purveyors of Americana
Patented & Mechanical Antiques
www.Patented-Antiques.com

patentedantiques@gmail.com
Orders / Inquiries / Questions

530-748-7297
(ORDERS ONLY)


Scientific / Technology & Office Related Antiques

Electrical / Typewriters / Telegraph / Appliances
Light Bulbs / Pencil Sharpeners / Calculation & More



K & E / Keuffel & Esser 4012 Thacher Slide Rule / CalculatorK & E / Keuffel & Esser 4012 Thacher Slide Rule / Calculator (Last Model) This #4012 Thatcher calculator / slide rule is in super nice condition.  The serial # is 6285 and this # can be found on the original OAK mounting board near the top back edge.  Near the end of production K & E stopped using the typical mahogany mounting board and outer box and began using oak for the last few hundred before ending production.  This 4012 oak box & base variant is much harder to find than the earlier mahogany versions.  In addition to the K & E serial number there is also a brass plaque on the base board indicating it was property of the US Navy at one time. 

The inner scales on the drum are white and very nice.  The scales on the outer frame are near perfect as well.  They have hardly yellowed at all and there is no lifting of the paper scales or spotting to be seen.  The instructions on the base are very nice as can be seen in the pics, . The oak box is nice noting a few scratches and some loses to the finish. There are no names, initials, or other carved into the box, base, or calculator.

The Thacher calculator has a near unique sliding drum design whose scales total over 30' long if laid out in a line. Edwin Thacher first patented the idea for this slide rule / calculator in 1881 in England. The idea was an immediate success with the scientific and engineering communities. K & E bought they rights to sell and manufacture the popular rule.  Stanley initially produced them in England for K & E. and production was moved to the states near the turn of the century.  The Thatcher calculator was first offered by K & E in their 1887 catalog as the 1740-N. In 1890 they dropped the N. In 1899 they changed the calculators catalog # to 4012 or 4013. The 4013 being the upgraded model w/ a built in magnifier. There were approx. 7000 total units made. The inventors name is Thacher, but it was misspelled Thatcher on almost all versions of the calculator that K & E offered, hence the use of two different spellings of Thatcher / Thacher in this ad and on the rule itself.

A nice piece that will display well and be a great addition to the old office or calculation related collection!!  Enjoy.

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SR-4012N

Fine . . . . . $1295.00

To Order Email:  patentedantiques@gmail.com





Curta Type 2 CalculatorCurta Type II Calculator # 558022   This is a very nice Type II Curta calculator. The serial number 558022. It is a later model and has the two tone color scheme on the body. The original fold out instruction sheet and manual show some use, but are nice as well.  They are dated 1974. Cosmetically this Curta is very nice. It functions smoothly and flawlessly. The black plastic case with its rubber bumpers is in great condition as well.

The main difference between a Type 1 & 2 are the number of places it has. They were both being offered simultaneously although the Type 1 was introduced first a few years before the Type 2 came to market.The Curta calculator is one of the most interesting designs of manual calculators ever designed. Before the advent of hand held electronic calculators they wereCurta Calculator Type II cutting edge technology and the final word in mechanical calculators. The type II Curta has a larger capacity than the type 1, and has 11 columns that carry out to 15 places. It is pretty incredible that they were able to get all that capacity and capability to fit into the palm of a users hand. The introduction of the hand held electronic calculator ended the Curtas reign as the calculator of choice for use, and began it accent into the realm of one of the most sought after of collectible calculating devices.

These devices were first invented by Carl Herzstark while imprisoned in a German concentration camp during World War II. On the bottom of the calculator is the manufacturer info, and it says Made in Liechtenstein, (Customs Union with Switzerland.) by Contina LTD. Mauren System Curt Herzstark.  The black plastic case dimensions are approximately 4 5/8" tall by 2 1/4" diameter. Inside of the black plastic case has both foam pads to protect the device. The end of an era!!

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Excellent  . . . . . $1295.00






The Equationor or Universal Calculator - Patented & Copyrighted by Walter HartThe Equationor or Universal Calculator Patented & Copyrighted by Walter Hart The Equationor circular slide rule / calculator patented & copyrighted by Walter Hart is one of the rarest and most unusual slide rules ever produced.  There are no other examples, other than this one, to be found or viewed with internet searches.  There is one article by Conrad Schure about the Hart Equationor in a 1992 issue of  Oughtred Society's publication.  Also the Library of Congress has a copy of the 32 page instruction booklet that anyone can download for free as a PDF.  Beyond that there are just resellers trying to market copies of the instructions that can be had for free further down the page. 

The face of the calculator has a wealth of information printed on it.  In the left top corner are the 2 copyright dates from 1888, and 1889. In the left corner are patents from July 31 1888, and April 29 1890.  The 1888 patent # is 387,070 and is titled Sliding Logarithmic Scale.  It is viewable with a Google search. The second patent from April 29th 1890 closely resembles the calculator as it exists, right down to the sliding magnifier.  That patent # is 426,444 and is titled Sliding Calculating Scale.  It too comes up with a Google search. 

The simple and ingenious logo Walter Hart came up with to market his calculating slide rule, that took 32 pages to explain how to use, was "Arithmetic Without Figuring".  Simple Genius. 

The condition of this Hart Equationor is exceptional.  Many circular slide rules have a problem with the scales peeling, chipping, or otherwise deteriorating.  Not so here.  There is a fine alligatoring texture to the surface that looks to be factory and not damage.  The face is near flawless w/ one small dent chip.  The magnifier is very nice.  The box is original and w/o lid. A super nice and rare piece of calculation history that will display well and be a great addition to the old office, slide rule, or calculation related collection!!  Enjoy.

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SR-HART

Fine . . . . . $9895.00

To Order Email:  patentedantiques@gmail.com



Slide Rules & Calculators
By Curta - Pickett - Sun Hemmi - Aristo & Others



Pickett N1010-ES Trig 4' Classroom Teaching Aid Slide RulePickett N1010-ES Trig 4' Classroom Teaching Aid Slide Rule  The condition of this 4' teaching aid sliderule is very nice.  It is model # N01010-ES Trig rule. It dates from the 1960's or 70's.  I do not think it was ever used.  Nice!!

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SR-P1010-2

Fine . . . . . $325.00

To Order Email:  patentedantiques@gmail.com





Sharp Compet Elsi-Mate EL-8002 CalculatorSharp Compet Elsi-Mate EL-8002 Calculator   This calculator is NOS / never been used.  Started right up when I installed 3 AA batteries.  You can read all about this model at  the Calculator.org site  https://www.calculator.org/calculators/Sharp_EL-8002.html   Offered in 1974 only.  Nice!!

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CALC-SHARP-8002

Fine . . . . . $45.00

To Order Email:  patentedantiques@gmail.com





Panasonic 860 CalculatorPanasonic 860 Electronic Calculator   This calculator is NOS / never been used.  First offered in 1973. Started right up when I plugged in the adapter. The original battery pack is dead and just beginning to leak.  You can see specs about this model at  the Calculator.org site   https://www.calculator.org/calculators/Panasonic_860.html

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CALC-PANA-860

Fine . . . . . $75.00

To Order Email:  patentedantiques@gmail.com





Melcor 1000 Electronic CalculatorMelcor 1000 Electronic Calculator   This calculator is NOS / never been used.  It had an original Melcor Battery in it that leaked a bit.  I could not get it to light up with a new battery or with the adapter seen. 

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CALC-MELCOR-1000

Fine . . . . . $25.00

To Order Email:  patentedantiques@gmail.com





6 Sharp Compet Elsi-Mate Calculators6 NOS Sharp Compet Elsi-Mate Calculators   These calculators are NOS / never been used.  Buy them all or individually.  Most work, one does not. 

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CALC-6SHARP

Fine . . . . . $195.00 / Lot

To Order Email:  patentedantiques@gmail.com





Sharp Compet Elsi-Mate EL-8106 Calculator - NOSSharp EL-8106 Calculator - NOS NOS / never been used w/ original box and more.  Fired right up with 3 AA batteries installed. 

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CALC-SHARP-8106

Fine . . . . . $50.00

To Order Email:  patentedantiques@gmail.com





Sharp Elsi Mate EL-8018 Calculator - NOS Sharp Elsi Mate EL-8018 Calculator - NOS NOS / never been used.  Fired right up w/ 2 AA Batteries.   

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CALC-SHARP-8018

Fine . . . . . $40.00

To Order Email:  patentedantiques@gmail.com





Sharp Elsi Mate EL-8010 Slim Line CalculatorSharp Elsi Mate EL-8010 Slim Line Calculator   NOS / never been used.  The small disc batteries got left in too long and leaked.  It looks like it can be cleaned, but is untested.

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CALC-SHARP-8010

Good . . . . . $20.00

To Order Email:  patentedantiques@gmail.com





Sharp Elsi Mate EL-8114 CalculatorSharp Elsi Mate EL-8114 Calculator   NOS / never been used.  Fired right up w/ 4 AA Batteries. 

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CALC-SHARP-8114

Fine . . . . . $40.00

To Order Email:  patentedantiques@gmail.com





Sharp Compet Elsi Mate EL-5000 Electronic CalculatorSharp Compet Elsi Mate EL-5000 Electronic Calculator   NOS / never been used.  Fired right up w/ 4 AA Batteries or the adapter. The Sharp EL-5000 is a scientific calculator with 10 digits, precision and algebraic logic. It has 36 functions, 40 keys, and a VFD (vacuum fluorescent) display. The power source is 4 AA. The calculator was manufactured in Japan. Offered in 1976 only.

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CALC-SHARP-5000

Fine . . . . . $85.00

To Order Email:  patentedantiques@gmail.com





Sharp Compet Elsi Mate EL-8002 Electronic CalculatorSharp Compet Elsi Mate EL-8002 Electronic Calculator   NOS / never been used.  Original batteries leaked and there is minor corrosion.  Fired right up w/ 3 AA Batteries.

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CALC-SHARP-8002

Fine . . . . . $35.00

To Order Email:  patentedantiques@gmail.com



Electric Motors / Dynamos / Fans / Steam Engines / Water Motors
& Other Early Power Devices



Carlisle & Finch No 27 10 Volt Electric Bipolar DynamoCarlisle & Finch No 27 10 Volt Electric Bipolar Dynamo    The tag or maker id info on this early and interesting open frame exposed coil electric dynamo is at the top. The plate reads "NO. 27 DYNAMO ~ 10 VOLTS ~ SPEED 1200 ~ THE CARLISLE & FINCH CO. CINCINNATI, O.". The base is cast iron.  The brass drip oilers & connecting terminals are present and the motor runs. Overall it measures 10'' in length by 5 1/4'' wide and stands 6 1/2'' at its tallest point. Super nice condition.

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ALA-CFM

Good + . . . . . $495.00

To Order Email:  patentedantiques@gmail.com






Thomas Edison Mary-Ann Dynamo / Electric Motor ModelThomas Edison Mary-Ann Dynamo / Electric Motor Model   Wonderful representation. Clean, straight from the collection and ready for yours.   Nice!!    

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SE-MARYANN

Fine . . . . . $495.00 

To Order Email:  patentedantiques@gmail.com








Erector Set Plastic Electric MotorErector Set Plastic Electric Motor What the world has evolved to.    

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SE-PLAS-MTR

Fine . . . . . 10.00 

To Order Email:  patentedantiques@gmail.com







B. F. Sturtevant Co. 1/8 Horsepower Electric MotorB. F. Sturtevant Co. 1/8 Horsepower Electric Motor  A nice looking Pancake style electric motor that dates from near the turn of the century.  The founder of the company hailed from Maine, but this is marked Boston Mass where the company was formed.  The tag calls it off as being 104 volts and 1200 RPM. There is a Sturtevant history website that describes the history and more   Nice!!    

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SE-STURT-EM

Fine . . . . . $245.00        SOLD!!

To Order Email:  patentedantiques@gmail.com



Telegraph & Telephones & More



Electrical World and Engineer Magazine April 14 1900Electrical World and Engineer Magazine April 27 1901  I have about 20 issues of this magazine in similar condition.  The first 40 or so pages are all advertising.  So are the last 10 - 15.  The middle discusses cutting edge developments in the emerging field of electricity and engineering.  There are ads for all sorts of rare things one could only wish to find.  There are fans, motors, steam engines, light bulbs, arc lamps, telephone and telegraphy related ads, tools and much more.  The ads near the end mostly deal with larger things like steam engines, locomotives and large pieces of machinery and tools like milling machines, lathes and the like.  Most all are in very nice condition noting the covers are very fragile and some are loose.  The interiors on all are nice.   

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SE-MAGS-EWE-2

Good +  . . . . . . . $25.00 / Each

To Order Email:  patentedantiques@gmail.com






Crouse Hinds 500 Amp - 125 Volt Copper & Bronze Electric Knife SwitchCrouse Hinds 500 Amp - 125 Volt Copper & Bronze Electric Knife Switch  This huge antique electrical knife switch is made of almost all copper & bronze save the 2 mounting posts at the rear of the switch and the Bakelite handle and attaching bar. All told, with all seen on the table, there is over 70 lbs of copper in this switch and attachment parts. At something over $2.00 / lb scrap that comes to $150.00 or so in scrap. 

The large switch measures approx. 18" long from handle to back joint w/ vertical post. The last two of the 1" dia. by 1 1/2 long threaded rods are steel w/ bronze or copper uppers. Note the decorative knurling and cove on each of the upper bolsters. All of the other 8 contact rods are all copper, including the threaded rods and nuts as they carried electrical current.  The smaller switch seen further back, 1 of 5, is described in the ad below. 

This large electrical knife switch came off a large lighting control panel made of a marble slab that was disassembled. It dates from right around the turn of the century.  1900 that is. It can easily be remounted to a block of wood or other material to be displayed or be put back into service.   The last 4 pics show that panel before it was taken apart.  Perfect for the Frankenstein / Steampunk / Man-cave application.  HUGE!!

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SE-BIG-SWITCH

Good    . . . . . . . $250.00

To Order Email:  patentedantiques@gmail.com







Crouse Hinds 100 Amp - 125 Volt Copper & Bronze Electric Knife SwitchCrouse Hinds 100 Amp - 125 Volt Copper & Bronze Electric Knife Switch  This antique knife switch is made of almost all copper & bronze save the Bakelite handle and attaching bar. It weighs close to 5 lbs.

The switch measures approx. 10" long from handle to back joint w/ vertical post. The last two of the 1/2" dia. by 1 1/2 long threaded rods are steel w/ bronze or copper uppers. Note the decorative knurling and cove on each of the upper bolsters. All of the other 4 contact rods are all copper, including the threaded rods and nuts as they carried electrical current.

This large electrical knife switch came off a large lighting control panel made of a marble slab that was disassembled. It dates from right around the turn of the century.  1900 that is. The condition is excellent.  It can easily be mounted to a block of wood, marble, granite or other material to be displayed or be put back into service.   Perfect for the Frankenstein / Steampunk / Mancave application.  Nice!!

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SE-K-SWITCH

Good +   . . . . . . . $125.00

To Order Email:  patentedantiques@gmail.com







Zeitsinnapparat by Spindler & Hoyer, GöttingenZeitsinnapparat Scientific Psychological Recording Device by Spindler & Hoyer, Göttingen   It is a large and graphic instrument at over 28" across.

This unusual and large scientific apparatus was designed to measure & record optical and acoustic stimuli.   There is an ID tag on one top arm with the manufacturers name Spindler & Hoyer, Göttingen. It dates from approx. 1900 and is German.

Descriptions online make this type if machine sound like a forerunner of the polygraph machine.   Information also refers to its use in the study of time. There are numerous line drawings of similar devices using the word Zeitsinnapparat online that all lead to foreign or German sites.  Here is a linkn to one of those German Scientific sites.

It is unclear how exactly it would work, but it seems it was meant to be driven by a motor and would be hooked up to a drum like recording machine similar to those used on steam indicators.

Very graphic, and an interesting and important part of the history of Psychological study.  Nice!!

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TIDD-TIME

Good + . . . . . $595.00

To Order Email:  patentedantiques@gmail.com



Thomas A. Edison Related



Southern California Edison SignSouthern California Edison Sign  Approx. 14" across the bottom.  On Masonite.   Nice!!

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SE-EDSIGN

Good   . . . . . . . $30.00

To Order Email:  patentedantiques@gmail.com






Thomas A. Edison Sign / BannerThomas A. Edison Sign / Banner  Approx. 15" across the bottom.  On Fabric.  Same logo as the sign above, but not marked other than the Edison name.  It has a plastic or saran wrap like covering on it of which most I removed.   Nice!!

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SE-EDSIGN-2

Good   . . . . . . . $40.00

To Order Email:  patentedantiques@gmail.com




Antique Appliances & Misc. Electric



Antique Chase Bomb 2 Cell FlashlightChase "Bomb" 2 Cell Flashlight   This dates from the 30s or so.  It turns on.  The lens ring can be twisted to act like a second switch?  I think. Marked on back Pat Apld For.  Later versions have a patent date.   Nice overall condition.

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TX-BOMB-FL

Good +  . . . . . $25.00

To Order Email:  patentedantiques@gmail.com


Please See Past Sales Archives at our sister site www.AntiqBuyer.com for Examples of Past Sales

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Larry & Carole Meeker