This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...large foundries, which will be described briefly. Four foundries were visited in the course of this inquiry, but one of them was small and bought its metal already mixed. The others mixed their own alloys. The largest one has this work done in" separate room, large and fairly well ventilated, but with a badly broken ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...large foundries, which will be described briefly. Four foundries were visited in the course of this inquiry, but one of them was small and bought its metal already mixed. The others mixed their own alloys. The largest one has this work done in" separate room, large and fairly well ventilated, but with a badly broken cement floor which could not possibly be kept clean awl which actually is covered with dross and scrap. The dross is shoveled into the kettle through a feed door which is not protected by a hood and the lead runs out into an uncovered pot. There is a great kettle for mixing metal, capable of holding 15,000 pounds at a time. Thb is covered, but the feed door on the top and the tapping door are both unprotected. The temperature of the lead is usually at about 800 F. Dross from this kettle is worked up in a small smeltin? furnace. The five men working here are exposed to much lead dust as well as fumes, but they have only cold water to wash with, no soap or towels, nor are they forbidden to eat their lunch in this room. In the second establishment the metal mixing is carried on at the end of the foundry, one man being employed in mixing 3,000 to 5,500 pounds a day. There are two cmered kettles, but the covers must be raised for feeding or skimming and also for ladling out the metal into molds. Dross is not worked up here; it is sold. Here, too, the only provision for washing is cold water. In the third the mixing is done in the basement beside a window. The cement floor is new and clean, the place well ventilated, and both mixing pot and refining furnace are well hooded. The risks in this place consist in feeding the furnace with dross, which is always very dusty, and in the fumes which rise from the tapping doors of metal pot and refining fur...
Read Less
Add this copy of Hygiene of the Printing Trades... to cart. $48.36, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2011 by Nabu Press.
Add this copy of Hygiene of the Printing Trades... to cart. $73.57, new condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2011 by Nabu Press.
