Use these instructions help you use a tap & die set correctly to create perfectly threaded holes and matching screw threads for the fabrication needs of your designs. If you are having trouble viewing the PDF, please visit click the link below.
Brief History of IRS. Origin. The roots of IRS go back to the Civil War when President Lincoln and Congress, in 1862, created the position of commissioner of Internal Revenue and enacted an income tax to pay war expenses.The income tax was repealed 10 years later.hat same year, the first Form 1040 appeared after Congress levied a 1 percent tax on net personal incomes above $3,000 with a 6 percent surtax on incomes of more than $500,000. In 1918, during World War I, the top rate of the income tax rose to 77 percent to help finance the war effort.
But in 1913 when Congress passed an income tax law after the ratification of the 16th Amendment, the tax burden shifted to the richâat least for a while. Roots of the Income Tax. Although an income tax was proposed as early as 1812, Congress did not enact one until 1861, when the Civil War began.ith the income tax increases, federal receipts climbed from under $1 billion in 1917 to nearly $4 billion in 1918. At war's end, about 60 percent of federal tax money came from the income tax. It replaced tariff duties and excise taxes as the main source of revenue for the U.S. government.