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1 Words to use with overlap
Q.Would any difficulty be experienced in keeping the trunnions tight in a high pressure oscillating engine? A.It is very doubtful whether the steam trunnions of a high pressure oscillating engine will continue long tight if the packing consists of hemp; and it appears preferable to introduce a brass ring, to embrace the pipe, cut spirally, with an overlap piece to cover the cut, and packed behind with hemp.