Scientific American Supplement, No. 598, June 18, 1887 by Various
page 59 of 124 (47%)
page 59 of 124 (47%)
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known expert operator can possibly guide the work under it.
It is very improbable that such speeds will ever be exceeded. The limit has no doubt been reached. Very high speed is generally a delusion, and either results in indifferent work, or actually retards its progress. Some idea of the speed of the single thread machines now shown may be gathered from the fact that, running at 4,500, and making eight stitches to the inch, they accomplish over fourteen yards of sewing every minute. Of special machines of interest, and which are too unwieldy to be shown here, I am enabled to exhibit a few photographs. One of the most novel of these is the "Twin" machine, designed by the Singer company for the connecting together of the Jacquard cards used in lace machines. The operation was formerly performed by hand. It is now done by machine at less cost. The cards are placed upon a feeding drum, and fed beneath a pair of needles. The laces forming the connection between the cards are fed above and beneath, in line with the needles, and the whole is easily stitched together. An extension of the same device is the multiple machine, in which four needles and shuttles are used, sewing all the four seams at one operation. This method of linking the cards is considered better than similar work done by hand. Of Wheeler & Wilson's new factory, at Bridgeport, and of the Singer company's great new factory near Glasgow, I am enabled to exhibit photographic views. Before drawing my remarks to a close, I would briefly indicate the nature of the various machines shown upon the power benching. Of the Singer system, there are four. A drop-feed oscillating shuttle machine for |
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