Search results
Results from the WOW.Com Content Network
Level winders can be hydraulically or electrically driven and computer controlled, or they can be simple mechanical devices. A mechanical level winder comprises a main shaft (the lead screw) with helical screw grooving along which the rope feeder travels. The rope feeder housing includes two vertical roller bars and one horizontal roller, or ...
Drawworks (#7) is the mechanical section that contains the spool, whose main function is to reel in/out the drill line to raise/lower the traveling block. Drill bit (#26) is a device attached to the end of the drill string that breaks apart the rock being drilled. It contains jets through which the drilling fluid exits.
[12] Diagram 3 shows that now three rope parts support the load W which means the tension in the rope is W/3. Thus, the mechanical advantage is three. By adding a pulley to the fixed block of a gun tackle the direction of the pulling force is reversed though the mechanical advantage remains the same, Diagram 3a. This is an example of the Luff ...
Historically, jewel pivots were made by grinding using diamond abrasive. [1] Modern jewel pivots are often made using high-powered lasers, chemical etching , and ultrasonic milling . During World War II jewel bearings were one of the products restricted by the United States government War Production Board as critical to the war effort.
The Shakespeare Company is a subsidiary of Pure Fishing which manufactures fishing equipment. It was founded by William Shakespeare Jr. in Kalamazoo, Michigan in 1897. [1] It was moved to Columbia, South Carolina in 1970.
Exploration diamond drilling differs from other geological drilling (such as Reverse Circulation (RC) Drilling [3]) in that a solid core is extracted from depth, for examination on the surface. The key technology of the diamond drill is the actual diamond bit itself. [4] It is composed of industrial diamonds set into a soft metallic matrix.
A spinning reel. A fishing reel is a device used for the deployment and retrieval of a fishing line using a spool mounted on an axle. Fishing reels are traditionally used in angling. They are most often used in conjunction with a fishing rod, though some specialized reels are mounted on crossbows or to boat gunwales or transoms. The earliest ...
The steps used to tie a diamond hitch with six points of anchorage. In the diagram shown to the left, six points are used, but the top left, right, bottom left and right points can be ignored by simply "tucking" the rope beneath the load to be tied down, provided its shape and size allow, as is the case when the knot is used on a pack-saddle where those four extra points are simply the four ...