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Reliable constant pull stringing machines usually cost $3,000 and more. This type of stringing machine is found at nearly all professional tournaments. There are two types of electronic tension mechanisms: constant pull and lock out. Constant pull, as the name suggests, pulls the string and continues pulling until the desired tension is reached.
In 1900, Colman invented the Hand Knotter, which could quickly and easily tie knots in string. It was in such high demand that Barber & Colman were able to open their own plant in 1902. Soon they had branches in Boston, Massachusetts and the UK. Colman's Warp Tying Machine, introduced in 1904, was also a great success.
A pullstring (pull string, pull-string), pullcord (pull cord, pull-cord), or pullchain (pull-chain, pull chain) is a string, cord, or chain wound on a spring-loaded spindle that engages a mechanism when it is pulled. It is most commonly used in toys and motorized equipment. More generally and commonly, a pullstring can be any type of string ...
This is done to make the field more uniform so that a "puller" machine can come through the corn field a few days later and pull the tassel out of the plant by catching it between two rollers moving at a high speed. This removes the majority of the tassels. Detasseling machines typically remove 60 to 90 percent of the tassels in a seed corn field.
However, tying the knot this way does not allow putting the loop around a fixed object like a tree; to do that, the knot must be tied in a two-stage process by first tying a figure-eight knot, running the end of the rope around the fixed object, and then threading the rope back through and around the figure-8 knot to create the final figure-8 ...
Continue by passing the working end over the working part, around the standing part again and back through the loop formed in the first step. Make sure this second wrap tucks in between the first wrap and the working part of the line on the inside of the loop. This detail gives this version its additional security.
A safety wire is used to ensure proper security for a fastener. The wire needed is long enough to reach from a fixed location to a hole in the removable fastener, such as a pin — a clevis fastener, sometimes a linchpin or hitch-pin through a clevis yoke for instance — and the wire pulled back upon itself, parallel to its other end, then twisted, a single end inserted through a fastener ...
This mechanism bundles the stems of grain and ties the bundle with string to form a sheaf. Once tied, the sheaf is discharged from the side of the binder, to be picked up by the 'stookers'. With the replacement of the threshing machine by the combine harvester, the binder has become almost obsolete.