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modern make of cans, and the soldering process is slow 

 and costly. In a soldered can (i) the body has to be 

 cut and soldered together, (2) the bottom has to be 

 struck and soldered to the body , (3) after the can is filled 

 the top. separately struck, has to be soldered on. Hence 

 three soldc rings in each of which there may be a defect, 

 nor is the completed can attractive till supplied with 

 paper or foil labels. Moreover our solderers are apt to 

 work very slowly and unless under the strictest super- 

 vision, inefficiently. But the modern can is (i) solid 

 drawn, viz., by being stamped by a die out of the flat 

 into a seamless dish, (2) the cover is sealed on to the 

 body by a machine which folds the edges or flanges of 

 cover and body with a double fold having a rubber ring 

 between them, so that the joint is not only beautifully 

 neat but absolutely air-tight , the operation is practically 

 automatic, is extremely rapid — over 5,000 per day 

 can be sealed with one machine — failures are very 

 few, and the completed can is of good appear- 

 ance, being extremely neat and tidy, irrespective of the 

 labels. 



8. Schedule A is a pro forma invoice of a can-making 

 plant which I propose as a type-plant, viz., an installation 

 which can at any moment be reproduced by persons who 

 desire to engage in canning as a business enterprise, and 

 who can simply copy our plant and be instructed in every 

 detail of its use, larger enterprise can simply multiply the 

 units of which it is composed or obtain larger machines 

 of the same type. This will greatly help private enterprise 

 in taking up what must, at a very early date, become a 

 popular industry, by having a type plant people can know 

 beforehand exactly the cost of an enterprise and can be 

 personally instructed in its use, while repairs and re- 

 placements will be immensely simplified. The engineers 

 who supply the plant have gone carefully into the matter 

 with me, and the plant is believed to be exactly suitable 

 for the small canneries which, like the small oil and 

 guano factories, will probably be the form which develop- 

 ment will take. 



For purposes in which solderless cans are undesir- 

 able, whether on account of small size or other technical 

 reasons, I shall still have my present plant which is quite 

 efficient. 



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