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)


Antique & Vintage Calculation 

Stick Type Slide Rules & Calculators etc.
By Keuffel & Esser / K & E



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 . . . . . $1350.00

To Order Email:  patentedantiques@gmail.com





K & E Keuffel & Esser 4053-3 Polyphase 7' Classroom Teaching Aid Slide RuleK & E - Keuffel & Esser 4053-3 Polyphase 7' Classroom Teaching Aid Slide Rule  The condition of this 7' teaching aid sliderule is very nice.  It is model 4053-3 Polyphase.  It dates from the 1960's or 70's.  I do not think it was ever used.  It was missing the cursor and I made a new one for it.  A perfectionist might not like it, but it is functional and looks pretty good.  The finish is near perfect noting that there is a clear coat on it that is peeling in places, leaving the original paint below. Nice!!

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SR-KE-7FT

Fine . . . . . $350.00

To Order Email:  patentedantiques@gmail.com



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



Curta Type I Calculator w/ Box & PaperworkCurta Type I Calculator w/ Box & Paperwork  This is one of the finest condition Type I Curta Calculators I have ever handled.  It has its original cardboard case as well as the original guarantee card from the store it came from, plus the 2 typical pieces of instructional paper, the manual and a quick start guide one finds.  It shows little if any wear and looks to have seen little if any use.  It operates flawlessly. 

This Type I Curta calculator has serial number 46797. The cardboard box has a label with the same number.  The paperwork indicates it was first sold in the early 1960s.  There are sites online that are devoted to the science of dating these where one can determine a more precise production date. The outer case is metal and both pads are present.  On the bottom of the calculator is written  "Type I No 46797 Made in Liechtenstein Customs Union with Switzerland, by Contina LTD Mauren, System Curt Herzstark,

The Curta Calculator was invented by Carl Herzstark while imprisoned in a German concentration camp during World War II and was the calculator of choice before the advent of electronic calculators ended their run in that sense and they became a much sought after collectible of today.   


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CURTA-T1-46797

Fine. . . . . $1100.00    SOLD!!

To Order Email:  patentedantiques@gmail.com





Pickett N500-ES 4' Classroom Teaching Aid Slide RulePickett N500-ES 4' Classroom Teaching Aid Slide Rule  The condition of this 4' teaching aid sliderule is very nice.  It is model # N500-ES Log Log rule and has 22 scales.  It dates from the 1960's.    Nice!!

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SBRG-PIC500-SR2

Fine . . . . . $325.00

To Order Email:  patentedantiques@gmail.com





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


We can help you sell your quality Antiques in this and other categories of Antiques.

If you have similar antiques or collectibles you want to sell please see our
FAQ Page, the Appraisal / Selling Page, and the Selling Your Collection Pages for further info about selling with us.

To view examples of the types of antiques and collectibles we have previously sold and are always interested in helping you sell please visit our Past Sales Archive Pages at our sister website www.AntiqBuyer.com.

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Larry & Carole Meeker