16936211032006 Hall Machines


1 At Pysht & Ring had some of the finest and also the Merrill anywhere in the To handle these largest timber found Northwest. very large logs they used some impressive machinery. early steam were powered with a vertical boiler The donkeys more steam cylinders; one on each side of the piped to two or size of the machine was indicated by the size of the The boiler. - the first numbers indicating the bore and the steam cylinders number second stroke. Thus a 13X18 indicated a machine with the of 13 and 18 inch stroke. cylinders inch bore all of Merrill & Ring's donkeys were mounted on very Nearly large sleds fashioned from two 40 to 50 feet long. fine logs Warren Billy sled maker, and he was truly an artist was the old with adze and broad axe. The little Lidgerwood skidder was the one exception being car mounted. rail a yarding donkey mounted Billy Warren's With on one of a his machine under its own sleds, good hooktender could move any where thru the woods. This could be over power almost a distance several miles. of configurations these machines. This There were several of a description of is of them. Besides the main yarding and some loading drums described here there would also be several smaller drums. For all the yarders would have a pass line drum instance for rigging the spar tree. There was also a used exclusively drum for the strawline which was carried out by hand to take out a the and mainline. The duplex loader would also have haulback car spotting drum to move rail cars.

2 loader DUPLex Duplex Loading Donkey had two duplex loader loading drums each powered The by its On the steam own set of forward drum shaft there cylinders. was drum. spotting a car also In operation, loading lines were hooked to opposite ends the two of of loading tongs. Each loading line the log with sets a block attached to a loading jack positioned on one thru passed guy lines directly over the rail car. of the engineer lower The a Bar" which controlled the steam cylinder valves used "Johnson of providing both directions. This each drum variable speed in raise lower the log on the rail to gave excellent control and also was a car. fast method of providing slack to the It very to set on the next log. This their tongs very fast loaders was a noisy operation. and

3 The Conventional Yarder conventional drum had a main drum and a haulback The yarder by one pair of steam cylinders connected to the jack powered shaft. The jack shaft was geared to the haulback and mainline its' drum Each drum was engaged to shafts. respective bull gear thru a set of beveled friction blocks.

4 Compound Yarder compound donkeys were equipped with very large The geared narrow drums offset to allow for the double diameter gearing. The by two steam cylinders was geared jack shaft powered drum shaft thru the first reduction. The haulback haulback shaft was then geared to the mainline drum shaft thru reduction. This resulted machine with a high speed in a haulback, very powerful, but much slower main line, and a yarding power a machine of this configuration would out perform any conventional machine of egual cylinder size.

5 TWO Two Yarder Speed speed yarder similar to the conventional yarder The two was it had a double set of gears on the main except drum shaft. line There high speed gear and friction was a one side of the main on drum and a low speed gear and friction on the other side. With the high speed friction engaged there high line speed for was a loads. With the slow speed friction engaged there was more light power for heavy loads. Therefore the engineer had the choice of two machines in one a very versatile machine.

6 Slack Skyline slack skyline yarders steam cylinders The had one set of very large skyline drum. a second set of steam driving A cylinders powered main yarding and haulback drums. the In operation the skyline drum could raise and lower a skyline of approximately 2 1/2" to 3" diameter. A carriage rode on the skyline which carried main line to give the end of the lift logs. The haulback and several chokers were attached to the to a block riding the "bite" of the main line. This was just one of several skyline systems employed in the Northwest.

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