First report of the Departmental Committee appointed to inquire into the ventilation of factories and workshops : with appendices.

  • Great Britain. Home Office. Committee on Ventilation of Factories and Workshops.
Date:
1902
Catalogue details

Licence: Public Domain Mark

Credit: First report of the Departmental Committee appointed to inquire into the ventilation of factories and workshops : with appendices. Source: Wellcome Collection.

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    SS eee AP PIENDEX: I. ReEsuLTS OF EXAMINATION OF VENTILATION. CONTENTS. PAGE. INTRODUCTION - - - - - : : 3 : - E 3 2 . 1 ; aan oie Results of Examination of Ventilation : TasLe A.—Clothing Factories - - : - . - - - - - - - oting = TaBLE B.—Tailoring Workshops (English)! hee pean Tia ES CE aR aes 8 TABLE C.—Tailoring Workshops (Jewish) - - - - - - - <- : - 20 Taste D.—Workshops for Dressmaking, Millinery, Underclothing, &. — - - ; ~ = 23 TaBLE E.—Boot Workshops ~— - - - : : - . : - - Be a - 26 Tec a ee a em gg TABLE G.—Cabinet and Upholstery Works . - - - : - . - - - 31 ‘TABLE H.—Bread, Confectionery, and Articles of Food - - - - - : - vin BO TABLE |].—Letter Press Printing, Bookbinding, &c. - - - - - - : - = 34 TABLE J.—Stationery, Cardboard Boxes, &c. - : : - - . - : - - 44 TABLE K.—Engineering and Metal Trades - : - . - + = - : - - 46 TABLE L.—File Cutting (Sheffield) - - - - - - - - - - - - 49 TABLE M.—Textile Factories—Cotton Weaving and Miscellaneous Processes (Non-humidified) - 54 TABLE N.—Textile Factories—Cotton Weaving (Humidified) - - - - - - - 61 TaBLE O.—Textile Factories—Cotton Spinning - - -~— - Om ES ee! ee iQ TABLE P.—Textile Factories—Wool Weaving - - - : : - : - : - 81 TABLE Q.—Miscellaneous - - - - . - - . . - - - - - 84 Coloured chart illustrating relations of CO, to cubic space in certain large cotton spinning rooms | To face p. 90 INTRODUCTION. The present Appendix contains a series of Tables giving the results of the examination by the Committee of the general ventilation of factories and workshops visited by them in the course of their inquiries. To facilitate reference the Tables are classified according to the nature of the work. The carbonic acid determinations were made by the method described in Appendix III., partly on the spot and partly from samples collected in bottles. The determinations of bacteria, which were only made in a few cases, were by a slightly modified form of Frankland’s method (Philosophical Transactions, 1887, B.) The air was drawn through a sterilised plug of glass wool by means of a brass syringe of known capacity, the number of strokes of which served asa measure of the volume of air taken. The glass tubes containing the glass wool plugs were each enclosed in a separate outside sterilised glass tube, with an asbestos plug. On this outside tube the label was placed. In taking the sample of air the inside tube was attached directly to the pump by means of a short piece of.stout rubber tubing. The plug was afterwards transferred, with the necessary precautions, to a shallow flat- bottomed flask, containing a small quantity of liquefied nutrient jelly, which was shaken so as to disintegrate and spread the glass wool. The jelly having been allowed to set, the flask was kept at a temperature of 20 degrees C. till no further colonies of bacteria or moulds developed. The number of colonies which grew indicated the number of bacteria in the air taken. In cases where two temperatures are given these refer to readings of the dry and wet bulb thermometers. For nearly all the analyses of air in file-cutting workshops we are indebted to Dr. Robertson, Medical Officer of Health for Sheffield, who very kindly placed at the disposal of the Committee a number of unpublished data obtained by himself. His analyses will be found in Table L.