Transactions, Issues 48-551890 Includes its Constitution, by-laws and list of members. |
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Page 32
... belts . But ropes had long been used to drive small machines and in a large way for cable haulage in mines and on inclined railways . Hemp and cotton ropes have been employed for this purpose in England for several years . The ...
... belts . But ropes had long been used to drive small machines and in a large way for cable haulage in mines and on inclined railways . Hemp and cotton ropes have been employed for this purpose in England for several years . The ...
Page 33
... belt of convenient size , another rope belt is added , and so on . English System . This system has several disadvantages , among which are prom- inent the impossibility of securing uniform tension on the sev eral ropes , and the ...
... belt of convenient size , another rope belt is added , and so on . English System . This system has several disadvantages , among which are prom- inent the impossibility of securing uniform tension on the sev eral ropes , and the ...
Page 34
... belt ; but the modern growth of mechani- cal science in this country has led to many experiments look- ing to an avoidance of the cost and mechanical losses attending the wide belt . The outcome of these experiments is the American ...
... belt ; but the modern growth of mechani- cal science in this country has led to many experiments look- ing to an avoidance of the cost and mechanical losses attending the wide belt . The outcome of these experiments is the American ...
Page 38
... belt transmission the amount of friction between the belt and pulley governs the transmitting capacity ; but in the manila rope system the principle of multiplied coil friction adopted renders it possible , with a few turns , to remove ...
... belt transmission the amount of friction between the belt and pulley governs the transmitting capacity ; but in the manila rope system the principle of multiplied coil friction adopted renders it possible , with a few turns , to remove ...
Page 40
... power has been adopted for long - distance transmission more rapidly than in locations where belts can still be employed without marked difficulty . In connection with rope transmissions over considerable distances , the friction clutch 40.
... power has been adopted for long - distance transmission more rapidly than in locations where belts can still be employed without marked difficulty . In connection with rope transmissions over considerable distances , the friction clutch 40.
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Common terms and phrases
Aerophor amount apparatus Association ATKINSON average bale belt Biddeford Board of Government bobbin boiler Boston BOURNE cards cent Charles cloth coal Conn cost per pound Cotton Mills cylinder dollars Draper EDWARD ATKINSON electric engine experience factory Fall River feet fire floor frame friction fuel George glass GOODALE heat Hooksett Hopedale horse-power humidity hundred inch Indian Orchard John John Birkenhead KENT KNIGHT kyanized labor Lancaster Mills Lawrence Lewiston light looms Lowell machine machinery Manchester Manuf manufacturers Mass meeting metallic rolls method moisture motor operation paper PARKER pipe plant PRESIDENT pressure Providence question Rabbeth ribbed ring rope running Sawyer shafting shell-feed speed spindle Spindle Oil spinning spinning frames steam stoker temperature tests THOMAS timber tion to-day transmission vapor warp weaving week weight West Boylston wheel Whitin Whitinsville William William F Willimantic wire wood WOODBURY yarn
Popular passages
Page 66 - ... for a term of one year, two for a term of two years, and two for a term of three years.
Page 59 - The earth round the place, for above two miles, has this surprising property, that by taking up two or three inches of the surface, and applying a live coal, the part which is so uncovered immediately takes fire, almost before the coal touches the earth ; the flame makes the soil hot, but does not consume it, nor affect what is near it with any degree of heat.
Page 59 - When the weather is thick and hazy, the springs boil up the higher, and the naphtha often takes fire on the surface of the earth, and runs in a flame into the sea in great quantities, to a distance almost incredible.
Page 59 - ... close the mouth of the spring : sometimes it is quite closed, and forms hillocks that look as black as pitch, but the spring, which is resisted in one place, breaks out in another. Some of the springs, which have not been long open, form a mouth of eight or ten feet diameter.
Page 129 - ... immersion; but this practice was soon abandoned and injection by pressure substituted. In 1838 Sir William Burnett, formerly Director General of the Medical Department of the English Navy, made known to the public his new process for treating wood. The invention consists of destroyng the tendencies of certain vegetable and animal substances to decay by submitting them to the action of chloride of zinc. The degree of dilution recommended by Mr. Burnett is one part volume by fifty parts of water....
Page 28 - This method of transmitting power depends upon two principles in mechanics: (1) The dynamic force is measured by the product of the force and the velocity with which it moves ; (2) In mechanical work, power may be exchanged for velocity, and velocity for power. To illustrate, let us suppose a bar of iron, having a cross sectional area of one square inch, to move endlong at the rate of two feet per second. Now, if the resistance overcome is say 5,000 pounds, work will be performed at the rate of 10,000...
Page 9 - AM for the election of a Board of Directors for the ensuing year, and the transaction of such other business as may properly come before the meeting.
Page 25 - The Sawyer spindle was limited in speed. With an unbalanced load it would vibrate and gyrate, at more than 7,500 turns per minute, so as to become useless. The Rabbeth spindle, on the contrary, will bear any speed desired, and the limit of production of the frame is transferred from the speed that the spindles will bear to the speed with which operatives can make good piecings of yarn broken in the o|)eration of spinning.