On the Economy of Machinery and Manufactures eBook

This eBook from the Gutenberg Project consists of approximately 358 pages of information about On the Economy of Machinery and Manufactures.

On the Economy of Machinery and Manufactures eBook

This eBook from the Gutenberg Project consists of approximately 358 pages of information about On the Economy of Machinery and Manufactures.
thousand per day, but from ten to fifteen thousand is the usual quantity:  children head a much smaller number:  varying, of course, with the degree of their skill.  About one per cent of the pins are spoiled in the process; these are picked out afterwards by women, and are reserved, along with the waste from other processes, for the melting-pot.  The die in which the heads are struck is varied in form according to the fashion of the time; but the repeated blows to which it is subject render it necessary that it should be repaired after it has been used for about thirty pounds of pins.

233. 6.  Tinning.  The pins are now fit to be tinned, a process which is usually executed by a man, assisted by his wife, or by a lad.  The quantity of pins operated upon at this stage is usually fifty-six pounds. (a) They are first placed in a pickle, in order to remove any grease or dirt from their surface, and also to render them rough, which facilitates the adherence of the tin with which they are to be covered. (b) They are then placed in a boiler full of a solution of tartar in water, in which they are mixed with a quantity of tin in small grains.  In this they are generally kept boiling for about two hours and a half, and are then removed into a tub of water into which some bran has been thrown, for the purpose of washing off the acid liquor. (c) They are then taken out, and, being placed in wooden trays, are well shaken in dry bran:  this removes any water adhering to them; and by giving the wooden tray a peculiar kind of motion, the pins are thrown up, and the bran gradually flies off, and leaves them behind in the tray.  The man who pickles and tins the pins usually gets one penny per pound for the work, and employs himself, during the boiling of one batch of pins, in drying those previously tinned.  He can earn about 9s. per day; but out of this he pays about 3s. for his assistant.

234. 7.  Papering.  The pins come from the tinner in wooden bowls, with the points projecting in all directions:  the arranging of them side by side in paper is generally performed by women. (a) A woman takes up some, and places them on a comb, and shaking them, some of the pins fall back into the bowl, and the rest, being caught by their heads, are detained between the teeth of the comb. (b) Having thus arranged them in a parallel direction, she fixes the requisite number between two pieces of iron, having twenty-five small grooves, at equal distances; (c) and having previously doubled the paper, she presses it against the points of the pins until they have passed through the two folds which are to retain them.  The pins are then relieved from the grasp of the tool, and the process is repeated.  A woman gains about 1s. 6d. per day by papering; but children are sometimes employed, who earn from 6d. per day, and upwards.

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On the Economy of Machinery and Manufactures from Project Gutenberg. Public domain.