Industrial and personal hygiene / by George M. Kober. A report of the committee on social betterment.

  • Kober, George M. (George Martin), 1850-1931
Date:
1908
Catalogue details

Licence: In copyright

Credit: Industrial and personal hygiene / by George M. Kober. A report of the committee on social betterment. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    nesota, Mississippi, New Jersey, New York, South Dakota, Washing- ton, and Wisconsin, require mechanical devices for the removal of in- jurious dust or gases. Of these States several lay down specific rules concerning the construction of workbenches and hoods. The latter empty into air shafts connected with exhaust fans, and thus extract all dust and fumes without material injury from drafts to the operatives. The provisions apply especially to operations in which emery wheels or belts or other buffing processes are employed. The laws of the State of Michigan, acts of 1899, furnish a good example of regulations of this character. ACTS OF 1899. Act No. 202.—Factories and workshops—Blowers for emery wheels, etc. Section i. All persons, companies or corporations, operating any factory or workshop, where wheels or emery belts of any description are in general use, either leather, leather covered, felt, canvas paper, cotton or wheels or belts rolled or coated with emery or corundum, or cotton, wheels used as buffs, shall provide the same with fans or blowers, or similar apparatus, when ordered by the com- missioner of labor, which shall be placed in such a position or manner as to protest [protect] the person or persons using the same from the particles of the dust produced and caused thereby, and to carry away the dust arising from, or thrown off by such wheels, or belts, while in operation, directly to the outside of the building or to some other receptacle placed so as to receive and confine such dust, and the same shall be placed in such factory or workshop within three months after this act shall take effect, in the manner and according to the directions and specifications as herein, in this act set forth: Provided, That grinding machines upon which water is used at the point of grinding contact shall be exempt from the conditions of this act: And provided further, That this act shall not apply to solid emery wheels used in sawmills or planing mills or other woodworking establishments. Sec. 2. It shall be the duty of any person, company or corporation operating any such factory or workshop to provide or construct such appliances, apparatus, machinery or other things necessary to carry out the purpose of this act, as set forth in^ the preceding section, as follows: Each and every such wheel shall be fitted with a sheet or cast-iron hood or hopper of such form and so applied to such wheel or wheels that the dust or refuse therefrom will fall from such wheels or will be thrown in such hood or hopper by centrifugal force and be carried off by the current of air into a suction pipe attached to same hood or hopper. Sec. 3. Each and every such wheel six inches or less in diameter shall be provided with a three-inch suction pipe; wheels six inches to twenty-four inches in^ diameter with four-inch suction pipe; wheels from twenty-four inches to thirty-six inches in diameter with a five-inch suction pipe; and all wheels larger in diameter than those stated above shall be provided each with a suction pipe, not less than six inches in diameter. The suction pipe from each wheel, so specified, must be full sized to the main trunk suction pipe, and the said liain suction pipe to which smaller pipes are attached shall, in its diameter and capacity, be equal to the combined area of such smaller pipes attached to the same; and the discharge pipe from the exhaust fan, connected with such suction pipe or pipes, shall be as large or larger than the suction pipe.
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