Farrow's military encyclopedia : a dictionary of military knowledge . Fig. ). Kig. S. Kig. Fig. 3. •ward, then work it perpendicularly until the weightis at the required height, or the number of inchesthe jack runs out. To lower the weight, push thelever to the bottom of the stroke, take it out, turn itwith the projection upward, and with a slight pres-sure of the hiind. the weight may be lowered as slow-as required, or stopped at any point. Sometimes itliappeus that another stroke of the lever woidd raisethe weight too high ; then raise the lever a little, andpush itdowu slowly, by which
Farrow's military encyclopedia : a dictionary of military knowledge . Fig. ). Kig. S. Kig. Fig. 3. •ward, then work it perpendicularly until the weightis at the required height, or the number of inchesthe jack runs out. To lower the weight, push thelever to the bottom of the stroke, take it out, turn itwith the projection upward, and with a slight pres-sure of the hiind. the weight may be lowered as slow-as required, or stopped at any point. Sometimes itliappeus that another stroke of the lever woidd raisethe weight too high ; then raise the lever a little, andpush itdowu slowly, by which the stroke will bemissed. Should the valve stick to its seat, and pre-vent the jack working, by striking the lever a fewsliarp blows up anil down, the valve will be ^. 1 shows the style used when the jack standsiipoii the groimd or light board, and can be placedunder the work, or where steadiness is 2 .shows the style used when there is not suf-ficient room to get the head of the jack under thework, and is the pattern used for moving heavyguns, boilers, machinery
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Keywords: ., bookcentury1800, bookdecade188, booksubjectmilitaryartandscience
