Felling trees safely for a lifetime 来自 EBSCO 喜欢 0 阅读量: 14 作者: NE Johnson 摘要: Presents advice on how to cut trees and avoid injuries from chain saw accidents. Recommended time in cutting down a tree; Determining which way the tree is leaning; Making an undercut; Avoiding trunk...
If the tree is leaning you get a more accurate result if you measure from the side, so that the tree is neither leaning towards you nor away from you. The distance between you and the tree is now equal to the height of the tree.How to measure the lean of a tree with a plumbline ...
Before you go ahead and fell a tree, you need to take a look at it carefully and assess the while situation. Here are some of the questions you should ask yourself: What shape is the tree? Which way is it leaning? Does it hold a lot of mass on one side?
An hydraulic ram connected to the blade swings it at a preselected slice rate chosen to cause, during slicing, a blade travel speed which has a predetermined relationship to the rate of trunk leaning.doi:US4384599 AJoseph E. Dagenais
Wedges help the tree fall in the direction of the notch cut by actually lifting the tree in that direction. Used to prevent the tree from pinching the saw (or leaning back on the saw) while making a backcut. Also can be used for bucking trees already on the ground. Made of high ...
1. A fluid operated ram to assist in felling a tree by engagement between top and bottom portions of a backcut in the tree, comprising (a) a cylinder housing (b) a piston slidable in said cylinder housing and projecting from one end of said cylinder housing whereby upon operation of said...
• A "must-have" when felling trees. Wedges help the tree fall in the direction of the notch cut by actually lifting the tree in that direction. Used to prevent the tree from pinching the saw (or leaning back on the saw) while making a backcut. Can also be used for bucking trees...
Wedges help the tree fall in the direction of the notch cut by actually lifting the tree in that direction. Used to prevent the tree from pinching the saw, or leaning back on the saw, while making a back cut. Often allowing a safer, cleaner felling experience.Show more Specifications ...