K & 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
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 were
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 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 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 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
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 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
NOS Sharp Compet Elsi-Mate Calculators These
calculators are NOS / never been used. Buy them all or individually.
Most work, one does not.
CALC-6SHARP
Fine . . . . . $195.00 / Lot
To Order Email: patentedantiques@gmail.com
Sharp
EL-8106 Calculator - NOS
NOS / never been used w/ original box and more. Fired right up with 3 AA
batteries installed.
CALC-SHARP-8106
Fine . . . . . $50.00
To Order Email: patentedantiques@gmail.com
Sharp
Elsi Mate EL-8018 Calculator - NOS
NOS / never been used. Fired right up w/ 2 AA
Batteries.
CALC-SHARP-8018
Fine . . . . . $40.00
To Order Email: patentedantiques@gmail.com
Sharp
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
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CALC-SHARP-8010
Good . . . . . $20.00
To Order Email: patentedantiques@gmail.com
Sharp
Elsi Mate EL-8114 Calculator
NOS / never been used. Fired right up w/ 4 AA
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CALC-SHARP-8114
Fine . . . . . $40.00
To Order Email: patentedantiques@gmail.com
Sharp
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.
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CALC-SHARP-5000
Fine . . . . . $85.00
To Order Email: patentedantiques@gmail.com
Sharp
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 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
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ALA-CFM
Good + . . . . . $495.00
To Order Email: patentedantiques@gmail.com
Thomas 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 Motor What
the world has evolved to.
SE-PLAS-MTR
Fine . . . . . 10.00
To Order Email: patentedantiques@gmail.com
B.
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 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 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 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 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 Sign
Approx. 14" across the bottom. On Masonite. Nice!!
SE-EDSIGN
Good . . . . . . . $30.00
To Order Email: patentedantiques@gmail.com
Thomas 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!!
SE-EDSIGN-2
Good . . . . . . . $40.00
To Order Email: patentedantiques@gmail.com
Antique Appliances & Misc. Electric
Chase
"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.Click for Pic Click for Pic Click for Pic Click for Pic
TX-BOMB-FL
Good + . . . . . $25.00
To Order Email: patentedantiques@gmail.com
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Larry & Carole Meeker