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"When several cells are conected so that the positive plate of one is joined to the negative plate of the next...they are said to be grouped or joined in series." -Avery 1895

Series Connection

"When several cells are conected so that the positive plate of one is joined to the negative plate of…

"When a high degree of force is required, several moveable pulleys may be combined, as represented [here]. A and B are fixed pulleys; C and D are moveable ones, from the block of which the weight W is suspended" —Quackenbos 1859

Multiple Pulleys

"When a high degree of force is required, several moveable pulleys may be combined, as represented [here].…

"Features six movable pulleys aligned on the same axis. This pulley was invented to reduce the friction of each block to a single wheel." —Quackenbos 1859

White's Pulley

"Features six movable pulleys aligned on the same axis. This pulley was invented to reduce the friction…