Constructive Text-book of Practical Mathematics, Volumen1J. Wiley & sons, Incorporated, 1912 |
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Página 258
... leadscrew . FIG . 160 . At each turn of the leadscrew the carriage accordingly moves a distance equal to the pitch of the leadscrew . By the definition of pitch given at the beginning of the chapter , a leadscrew having 8 threads to the ...
... leadscrew . FIG . 160 . At each turn of the leadscrew the carriage accordingly moves a distance equal to the pitch of the leadscrew . By the definition of pitch given at the beginning of the chapter , a leadscrew having 8 threads to the ...
Página 259
... leadscrew only when spindle and leadscrew revolve at different rates . Therefore if 16 threads per inch are to be cut with a pitch leadscrew , the spindle must make two turns while the leadscrew makes one ; if 28 threads per inch are ...
... leadscrew only when spindle and leadscrew revolve at different rates . Therefore if 16 threads per inch are to be cut with a pitch leadscrew , the spindle must make two turns while the leadscrew makes one ; if 28 threads per inch are ...
Página 260
... leadscrew gear . 215. Effect of Idlers . When the lever V is in the posi- tion shown , both spindle and leadscrew will turn in the same direction . For example , suppose S to revolve clockwise . I will turn counter - clockwise and F and ...
... leadscrew gear . 215. Effect of Idlers . When the lever V is in the posi- tion shown , both spindle and leadscrew will turn in the same direction . For example , suppose S to revolve clockwise . I will turn counter - clockwise and F and ...
Página 261
... leadscrew and spindle depends on , and is the same as , the relation between the number of teeth on spindle and leadscrew gears . If L has a greater number of teeth than C , it will turn slower ; if it has a less number , it will turn ...
... leadscrew and spindle depends on , and is the same as , the relation between the number of teeth on spindle and leadscrew gears . If L has a greater number of teeth than C , it will turn slower ; if it has a less number , it will turn ...
Página 262
... leadscrew with 4 threads to the inch and that 12 threads to the inch are wanted on a bolt . The threads on bolt and leadscrew are in the ratio of 12 to 4 , and the spindle must therefore turn three times as fast as the leadscrew . If it ...
... leadscrew with 4 threads to the inch and that 12 threads to the inch are wanted on a bolt . The threads on bolt and leadscrew are in the ratio of 12 to 4 , and the spindle must therefore turn three times as fast as the leadscrew . If it ...
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Términos y frases comunes
10-thousandths acute angle amperes apothem avoirdupois belt boiler circumference Compute and fill Compute the horse-power Compute the number Compute the weight cosine cubic foot cubic inches cylinder decimal places decimal point denotes depth determined dimensions distance divided division divisor Draw effective pull engine equals equation exponent feet per minute following table formula Formulate and compute fraction frustum gallons graduation hypotenuse inches in diameter integral figures kilowatts lathe leadscrew logarithm mantissa Measure meter metric micrometer motor multiplied notation number of revolutions number of threads omitted entries paragraph number piece piston pitch pounds preceding pressure pulley pump radius ratio reading regular polygon revolutions per minute right triangle rule scale screw screw thread SECTION shown side sine slide-rule Solve the following spindle square inch standard thread stroke subtracted tangent thimble threads per inch units velocity vernier voltage volume work-book
Pasajes populares
Página 28 - Divide as in whole numbers, and point off" as many decimal places in the quotient as the number of decimal places in the dividend exceeds the number in the divisor.
Página 448 - In a triangle, the square of any side is equal to the sum of the squares of the other two sides minus...
Página 208 - How many cubic yards of earth must be .removed in digging a cellar 36 ft.
Página 401 - The characteristic of the logarithm of a number greater than unity, is one less than the number of integral figures in the given number.
Página 28 - If the number of decimal places in the dividend is less than the number in the divisor, annex ciphers to the dividend till there are as many or more decimal places as in the divisor.
Página 177 - Add together the first ordinate, the last ordinate, twice, the sum of the other odd ordinates, and four times the sum of the even ordinates. Multiply this sum by the extreme length of the diagram, and divide the FIG.
Página 383 - Hence the characteristic is n — 1 ; that is, the characteristic of the logarithm of a number greater than unity is less by one than the number of digits in its integral part, and is positive.
Página 57 - J, is called reducing the fraction to its lowest terms. A fraction is said to be in its lowest terms when no number greater than 1 will divide its numerator and denominator without a remainder.
Página 389 - The logarithm of the quotient of two positive numbers is found by subtracting the logarithm of the divisor from the logarithm of the dividend. (6) The logarithm of a power of a positive number is found by multiplying the logarithm of the number by the exponent of the power. For, N" = (oT)
Página 225 - Specific Gravity. The specific gravity of a substance is the ratio of the weight of the substance to the weight of the same volume of...