Heritage Farm Museum Visit
Connect with US
  • Home
  • Dig Deeper
    • Progress Dig Deeper
    • Transportation Dig Deeper
    • Country Store Dig Deeper
    • Education Room Dig Deeper
  • Walking Tour
  • Heritage Inns
    • Applebutter Inn
    • AB History Picture Page
    • Blackberry Inn
    • Blackberry Inn Picture Page
    • Hollyberry Inn
    • Hollyberry Inn Picture Page
    • Woodbury Inn
    • Woodbury Inn Picture Page
    • Strawberry Inn
    • Strawberry Inn Picture Page
  • Contact
  • Country Store
  • Visitors Center
  • Progress Museum
  • Transportation Museum
  • LILY Thread
  • BOYE NEEDLE COMPANY
  • Tobacco Barn
  • Black Smith
  • Blacksmith Two
  • Blacksmith Picture Page
  • Country Church
    • Church Photo Gallery
  • Transportation Shed
  • Animals
    • Chickens
    • Goats
    • Rabbits
    • Llamas
    • Pea Cocks and Hens
    • Turtle
    • Heritage Breed Buffalo
  • Covered Bridge
  • Applebutter Inn
  • Virginia Caboose
  • Artisan Center 1
  • Artisan Center 2
  • Artisan Center 3
  • One Room Schoolhouse
    • One Room Teacher >
      • One Room Students
  • Hiking Trail
  • Red Caboose
  • Artisan Center Page Two
  • Conway House
  • Trappers Cabin
  • Home Stead House
  • One Room Schoolhouse Two
  • Cold Storage Cave
  • Water Tank
  • Wind Mill Village
  • Tractor Shed
  • Groundhog Kilm and Pottery Shed
  • Bee Garden
  • Saw and Shingle Mill
  • Exploration Station
  • Six Simple Machines
    • Wheel and Axle
    • Screw
    • Wedge
    • Incline Plane
    • Pulley
    • Tools
    • Lever
  • Wooden Cigar Press
  • Artisan Cafe
  • Artisan Gift Shop
  • Heritage Farm Video Page
  • Transportation Shed Two
  • Ducks
  • Humdinger Pump
  • Sears Catalog
  • Yoke
  • Humphrey's Remedies
    • REMEDIES ONE
    • REMEDIES TWO
    • REMEDIES THREE
    • REMEDIES FOUR
    • REMEDIES FIVE
    • REMEDIES SIX
    • REMEDIES SEVEN
    • REMEDIES EIGHT
    • REMEDIES NINE
  • Corliss, Coon & Co.
  • Post Office
  • Stereoscope
  • Clark's O.N.T. Thread
  • D.M.Ferry Flower Seeds
  • Linotype
  • Appalachian Facts
  • Appalachian Cultural Beliefs
  • Heritage Farm Bee Start
    • Heritage Farm Bee Page
    • Heritage Farm Bee Page Two
    • HF Bee Hands On
    • HF Bee Video Page
    • HF Bee Honey Page
    • HF Heritage Bee Page
    • HF Bee Facts
    • HF Bee Video Page Two
    • HF Bee Video Page Three
    • HF Bee Video Page Four
    • HF Bee Video Page Five
    • HF Bee Hands On Photo Two
    • HF Bee Hands On Photo One
    • HF Bee Hands On Photo Three
    • HF Bee Hands On Photo Four
    • HF Bee Hands On Photo Four
    • HF Bee Hands On Photo Five
    • HF Hive Cam
  • HF Bee Video Page Six
  • Transportation Model T
  • Model T Video
  • Progress Museum Bee Site
  • Progress Museum Bee Start Page
  • Progress video My fav
  • Progress video The Star
  • Progress video Mountain Dew
  • Progress video 1948
  • Progress video 1948
  • Progress video Grapenuts
  • Progress video Roytan
  • Heritage Quest Start Page
  • Coal Oil
  • Red Comet
  • Hearing Impaired Page
  • HI Progress Hunting and Trapping
  • HI Progress 1850
  • HI Progress 1900
  • HI Progress 1925
  • HI Progress Radio TV
  • HI Progress Music in the Hills
  • HI Progress All Aboard the Train
  • HI Progress Print the Word
  • HI Progress Soda Fountain
  • HI Progress Come to the Fair
  • HI Progress Weave a Dream
  • HI Progress That's Enertainment
  • HI Transportation
  • HI Country Store
  • HI CS The Peddler Cart
  • HI CS Farm Produce
  • HI CS Sewing
  • HI CS Store Packaged Meal and Flour
  • HI CS Can Goods
  • HI CS US Mail
  • HI CS Phone Call
  • HI CS Cool Drink
  • HI CS The Apothecary
  • HI CS Dr. Humphrey's
  • HI CS Pill Roller
  • Flax
  • Flax Two
  • HQ Fire Starting
  • HQ Fire Trading Cards
  • Penny Candy Landing Page
    • Penny Candy CS
    • Penny Candy CS2
    • Penny Candy CS3
    • Penny Candy CS4
  • Pill Roller
  • Bison
  • Cecil Sharp
  • Stage Coach
  • Stage Coach 2
  • SC Description
  • SC Parts
  • SC Details
  • Driver
  • Apothecary
  • IBM Cheese Slicer
  • Stereopticon
  • Curtis 1908
  • Quality Fruit and Produce
  • Sears Motor Buggy
  • Conestoga wagon
  • Model TT Truck
  • Ford Depot Hack
  • Gravity Gas Pumps
  • VT Progress
  • VT Transportation
  • VT Country Store
  • VT Progress 2
  • VT 1850
  • Virtual Tour
  • Gigapan
  • Sears Catalog
  • Spinners Weasel
  • Zoetrope
  • Jukebox
  • Tobacco Shop
  • Tobacco Products
  • Prince Albert in a Can
  • Scotten Dillon Company
  • John Finzer & Bros.
  • Bugler Tobacco
  • Edgewood Tobacco
  • Half and Half Tobacco
  • John Weisert Tobacco Co.
  • R. Lorillard Co.
  • R. J. Reynolds
  • Liggett Myers
  • Bull Durham
  • Sir Walter Raleigh
  • Dills
  • Daniel Scotten
  • Golden's Blue Ribbon
  • Philip Morris
  • Bull Durham Smoking Tobacco
  • Comptometer
  • Display One
    • Display One B
    • Display One C
  • Display Two
    • Display Two B
    • Display Two C
  • Display Three
    • Display Three B
    • Display Three C
  • Display Four
    • Display Four B
    • Display Four C
  • Coke Cola
  • Pepsi
  • Charles Chips
  • Tom's
  • Gillette
  • New Page
  • Arbuckle Coffee
  • The Age of Radio
  • Nehi
  • Del Monte Coffee
  • Zane's Park
  • Dyes and More
  • Easy Vacuum Electric Washer
  • Kent Knife Cleaner
  • HI Progress 1850 page two
Picture
The comptometer was the first commercially successful key-driven mechanical calculator, patented in the United States by Dorr E. Felt  in 1887.
A key-driven calculator is extremely fast because each key adds or subtracts its value to the accumulator as soon as it is pressed and a skilled operator can enter all of the digits of a number simultaneously, using as many fingers as required, making them sometimes faster to use than electronic calculators.

Picture

Comptometer

Although the comptometer was primarily an adding machine, it could also do subtractions, multiplication and division. Its keyboard consisted of eight or more columns of nine keys each. Special comptometers with varying key arrays were produced for a variety of special purposes, including calculating currency exchanges, times and Imperial weights. The name comptometer was formerly in wide use as a generic name for this class of calculating machine.
Picture

Dorr Eugene Felt

Dorr Felt began his work on comptometer in 1882 and started building first prototype during the American Thanksgiving holidays of 1884. Because of his limited amount of money, he used a macaroni box for the outside box, and skewers, staples and rubber bands for the mechanism inside. It was finished soon after New Years Day, 1885. This prototype, called the macaroni box, is in the Smithsonian Institution in Washington, D.C., United States.
Shortly after, Robert Tarrant, the owner of a Chicago workshop, gave Mr. Felt a salary of $6 a week, a bench to work on and what would add up to $5,000 to build his first practical machine which he finished in the autumn of 1886.
By September 1887, eight production machines had been built.
Education Room Dig Deeper
Picture

Patented

The original comptometer design was patented by Felt, on July 19, 1887 and on October 11, 1887.
Two years later, on June 11, 1889, he was granted a patent for the Comptograph.
Picture
Picture
Proudly powered by Weebly
  • Home
  • Dig Deeper
    • Progress Dig Deeper
    • Transportation Dig Deeper
    • Country Store Dig Deeper
    • Education Room Dig Deeper
  • Walking Tour
  • Heritage Inns
    • Applebutter Inn
    • AB History Picture Page
    • Blackberry Inn
    • Blackberry Inn Picture Page
    • Hollyberry Inn
    • Hollyberry Inn Picture Page
    • Woodbury Inn
    • Woodbury Inn Picture Page
    • Strawberry Inn
    • Strawberry Inn Picture Page
  • Contact
  • Country Store
  • Visitors Center
  • Progress Museum
  • Transportation Museum
  • LILY Thread
  • BOYE NEEDLE COMPANY
  • Tobacco Barn
  • Black Smith
  • Blacksmith Two
  • Blacksmith Picture Page
  • Country Church
    • Church Photo Gallery
  • Transportation Shed
  • Animals
    • Chickens
    • Goats
    • Rabbits
    • Llamas
    • Pea Cocks and Hens
    • Turtle
    • Heritage Breed Buffalo
  • Covered Bridge
  • Applebutter Inn
  • Virginia Caboose
  • Artisan Center 1
  • Artisan Center 2
  • Artisan Center 3
  • One Room Schoolhouse
    • One Room Teacher >
      • One Room Students
  • Hiking Trail
  • Red Caboose
  • Artisan Center Page Two
  • Conway House
  • Trappers Cabin
  • Home Stead House
  • One Room Schoolhouse Two
  • Cold Storage Cave
  • Water Tank
  • Wind Mill Village
  • Tractor Shed
  • Groundhog Kilm and Pottery Shed
  • Bee Garden
  • Saw and Shingle Mill
  • Exploration Station
  • Six Simple Machines
    • Wheel and Axle
    • Screw
    • Wedge
    • Incline Plane
    • Pulley
    • Tools
    • Lever
  • Wooden Cigar Press
  • Artisan Cafe
  • Artisan Gift Shop
  • Heritage Farm Video Page
  • Transportation Shed Two
  • Ducks
  • Humdinger Pump
  • Sears Catalog
  • Yoke
  • Humphrey's Remedies
    • REMEDIES ONE
    • REMEDIES TWO
    • REMEDIES THREE
    • REMEDIES FOUR
    • REMEDIES FIVE
    • REMEDIES SIX
    • REMEDIES SEVEN
    • REMEDIES EIGHT
    • REMEDIES NINE
  • Corliss, Coon & Co.
  • Post Office
  • Stereoscope
  • Clark's O.N.T. Thread
  • D.M.Ferry Flower Seeds
  • Linotype
  • Appalachian Facts
  • Appalachian Cultural Beliefs
  • Heritage Farm Bee Start
    • Heritage Farm Bee Page
    • Heritage Farm Bee Page Two
    • HF Bee Hands On
    • HF Bee Video Page
    • HF Bee Honey Page
    • HF Heritage Bee Page
    • HF Bee Facts
    • HF Bee Video Page Two
    • HF Bee Video Page Three
    • HF Bee Video Page Four
    • HF Bee Video Page Five
    • HF Bee Hands On Photo Two
    • HF Bee Hands On Photo One
    • HF Bee Hands On Photo Three
    • HF Bee Hands On Photo Four
    • HF Bee Hands On Photo Four
    • HF Bee Hands On Photo Five
    • HF Hive Cam
  • HF Bee Video Page Six
  • Transportation Model T
  • Model T Video
  • Progress Museum Bee Site
  • Progress Museum Bee Start Page
  • Progress video My fav
  • Progress video The Star
  • Progress video Mountain Dew
  • Progress video 1948
  • Progress video 1948
  • Progress video Grapenuts
  • Progress video Roytan
  • Heritage Quest Start Page
  • Coal Oil
  • Red Comet
  • Hearing Impaired Page
  • HI Progress Hunting and Trapping
  • HI Progress 1850
  • HI Progress 1900
  • HI Progress 1925
  • HI Progress Radio TV
  • HI Progress Music in the Hills
  • HI Progress All Aboard the Train
  • HI Progress Print the Word
  • HI Progress Soda Fountain
  • HI Progress Come to the Fair
  • HI Progress Weave a Dream
  • HI Progress That's Enertainment
  • HI Transportation
  • HI Country Store
  • HI CS The Peddler Cart
  • HI CS Farm Produce
  • HI CS Sewing
  • HI CS Store Packaged Meal and Flour
  • HI CS Can Goods
  • HI CS US Mail
  • HI CS Phone Call
  • HI CS Cool Drink
  • HI CS The Apothecary
  • HI CS Dr. Humphrey's
  • HI CS Pill Roller
  • Flax
  • Flax Two
  • HQ Fire Starting
  • HQ Fire Trading Cards
  • Penny Candy Landing Page
    • Penny Candy CS
    • Penny Candy CS2
    • Penny Candy CS3
    • Penny Candy CS4
  • Pill Roller
  • Bison
  • Cecil Sharp
  • Stage Coach
  • Stage Coach 2
  • SC Description
  • SC Parts
  • SC Details
  • Driver
  • Apothecary
  • IBM Cheese Slicer
  • Stereopticon
  • Curtis 1908
  • Quality Fruit and Produce
  • Sears Motor Buggy
  • Conestoga wagon
  • Model TT Truck
  • Ford Depot Hack
  • Gravity Gas Pumps
  • VT Progress
  • VT Transportation
  • VT Country Store
  • VT Progress 2
  • VT 1850
  • Virtual Tour
  • Gigapan
  • Sears Catalog
  • Spinners Weasel
  • Zoetrope
  • Jukebox
  • Tobacco Shop
  • Tobacco Products
  • Prince Albert in a Can
  • Scotten Dillon Company
  • John Finzer & Bros.
  • Bugler Tobacco
  • Edgewood Tobacco
  • Half and Half Tobacco
  • John Weisert Tobacco Co.
  • R. Lorillard Co.
  • R. J. Reynolds
  • Liggett Myers
  • Bull Durham
  • Sir Walter Raleigh
  • Dills
  • Daniel Scotten
  • Golden's Blue Ribbon
  • Philip Morris
  • Bull Durham Smoking Tobacco
  • Comptometer
  • Display One
    • Display One B
    • Display One C
  • Display Two
    • Display Two B
    • Display Two C
  • Display Three
    • Display Three B
    • Display Three C
  • Display Four
    • Display Four B
    • Display Four C
  • Coke Cola
  • Pepsi
  • Charles Chips
  • Tom's
  • Gillette
  • New Page
  • Arbuckle Coffee
  • The Age of Radio
  • Nehi
  • Del Monte Coffee
  • Zane's Park
  • Dyes and More
  • Easy Vacuum Electric Washer
  • Kent Knife Cleaner
  • HI Progress 1850 page two