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In 1970, Kyoritsu claimed to have 'revolutionized' outdoor cleaning with the PB-9, a backpack power blower. The Echo brand of hand-held petrol powered tools including chainsaws, brushcutters, hedge trimmers and leaf blowers are manufactured in Yokosuka and Morioka, with other major plants in Shenzhen, China and Lake Zurich, Illinois. [5]
Dolmar chainsaw 1950s log bucking bandsaws Makita Engineering Germany GmbH (Dolmar) is one of the oldest manufacturers of portable gasoline chainsaws and is headquartered in Hamburg , Germany. The company founder, Emil Lerp , developed in 1927 the "type A" saw, which weighed 125 lb (57 kg) and required two men to operate. [ 1 ]
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The chain has to be properly matched to the guide bar and the saw. Chainsaw manufacturers specify a selection of suitable chains for each model of saw. Best safety requires that the chain is properly sharpened. One key sharpening parameter is the depth gauge setting. The depth gauge is the small steel protubera
The force on an anchor may be much greater than the weight of the climber. There are various mechanisms that contribute to excess force, including Direction of pull, or vector pulling; Fall factor (if a fall occurs) Stiffness (reduced elasticity) of the climbing rope and anchor materials; improper slippage through the belay device
Between time spent surfing and climbing, he sold pitons out of the back of his car to support himself. The improved pitons were a big factor in the birth of big-wall climbing from 1957 to 1960 in Yosemite. The success of his pitons caused him to found Chouinard Equipment, Ltd. [8]
This is a list of climbers and mountaineers who are notable for their activities in mountaineering (including alpine climbing), rock climbing (including aid climbing, free climbing, bouldering, speed climbing and competition climbing) or in ice climbing (including mixed climbing