e’s throat and chamber to the vertical tube. When the air in the air the breast, in fitting the jacket to a person.’ In this prevent him from being choked. chamber becomes rarefied, or a partial vacuum is manner an elastic jacket is formed which can be made formed, the valve is lifted by external… … A MACHINE FOR FORMING SQUARE TIN CANS. DOBSON’S PUMP. The special construction of tin can machine here- with shown has been patented by Messrs. James W. For further particulars concerning this invention, WEIR’S MEASURING JACKET. on the main frame, the outer end of the crank shaft the positions of…
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