Bulletin of the U.S. Department of Agriculture, Ausgaben 701-725U.S. Department of Agriculture, 1913 |
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Seite 57
... are susceptible of further improvement . The present ground logging engine consists of an upright boiler. FIG . 14. - Yarding engine and sled . FIG . 19. - Trip line head FIG . 20. LOGGING IN THE DOUGLAS FIR REGION . 57.
... are susceptible of further improvement . The present ground logging engine consists of an upright boiler. FIG . 14. - Yarding engine and sled . FIG . 19. - Trip line head FIG . 20. LOGGING IN THE DOUGLAS FIR REGION . 57.
Seite 58
... trip line , either when a new setting is being made or when roads are being changed . The engines are classified as simple and compound geared . They are further classified as yarding , swing- ing , or roading engines . An engine having ...
... trip line , either when a new setting is being made or when roads are being changed . The engines are classified as simple and compound geared . They are further classified as yarding , swing- ing , or roading engines . An engine having ...
Seite 61
... trip is less in small timber than in large . A certain amount of time is consumed in making a yarding trip regardless of the number of logs or the volume of timber hauled , since in any event approxi- mately the same amount of time is ...
... trip is less in small timber than in large . A certain amount of time is consumed in making a yarding trip regardless of the number of logs or the volume of timber hauled , since in any event approxi- mately the same amount of time is ...
Seite 67
... trip line around a week's yarding in 2 hours and 10 minutes . The ground conditions were favorable . Another crew in the same region changed ends and ran the trip line out in 1 hour and 25 minutes . The ground was exceptionally good ...
... trip line around a week's yarding in 2 hours and 10 minutes . The ground conditions were favorable . Another crew in the same region changed ends and ran the trip line out in 1 hour and 25 minutes . The ground was exceptionally good ...
Seite 68
... trip line and the other end is reeled in on the small drum . This drags the trip line out to and through the blocks and back over the road to the yarder . The straw line is then detached and the end of the main line attached to the trip ...
... trip line and the other end is reeled in on the small drum . This drags the trip line out to and through the blocks and back over the road to the yarder . The straw line is then detached and the end of the main line attached to the trip ...
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Agriculture Bulletin 555 amount aphids arsenate of lead average bad eggs binder course bituminous concrete bituminous surface treatment block Bordeaux mixture bread brick broken stone Bureau camp candlers candling cars cent clay farms clothes moth coarse aggregate coefficient of wear cold-storage Columbia River cost crew crop Department of Agriculture drum ears elutriation flannel flour following requirements French coefficient globe artichoke grading gravel ground yarding hauled inch infested killed labor laboratory screens larvæ leaf stems legumes less than_ material means of laboratory meet the following mineral filler moths naphthalene operation Passing 1-inch screen percentage plants Polk Counties Portland cement Price railroad recandling rejects Retained on 1-inch road sample sand shell shuck covering silt loam farms specification sprayed storage sumac summer fallow Table tannin tensile strength tested by means thousand feet timber Total passing U. S. Department wearing course weevils weight wheat Willamette Valley yarding engine yolk
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Seite 22 - The cement shall be stored in such a manner as to permit easy access for proper inspection and identification of each shipment, and in a suitable weather-tight building which will protect the cement from dampness.
Seite 21 - To find the pressure in pounds per square inch of a column of water, multiply the height of the column in feet by .434. Approximately, we say that every foot elevation is equal to % Ib. pressure per square inch ; this allows for ordinary friction. To find the diameter of a pump cylinder...
Seite 22 - Portland cement is the product obtained by finely pulverizing clinker produced by calcining to incipient fusion an intimate and properly proportioned mixture of argillaceous and calcareous materials, with no additions subsequent to calcination excepting water and calcined or uncalcined gypsum.
Seite 74 - ... shall be punished by a fine of not less than twenty-five dollars ($25.00), nor more than one hundred dollars $100.00) or by imprisonment in a county jail for not less than ten days nor more than thirty days, or by both such fine and imprisonment.
Seite 35 - ... and, in smoothing off, the trowel should be drawn over the mold in such a manner as to exert a moderate pressure on the excess material. The mold should be turned over and the operation repeated.
Seite 22 - The average tensile strength in pounds per square inch of not less than three standard mortar briquettes...
Seite 22 - A pat of neat cement shall remain firm and hard, and show no signs of distortion, cracking, checking, or disintegration in the steam test for soundness.
Seite 13 - Raise the safety valves cautiously and frequently, as they are liable to become fast In their seats and useless for the purpose intended. 10.
Seite 22 - The specific gravity of cement shall not be less than 3.10. Should the test of cement as received fall below this requirement, a second test may be made upon a sample ignited at a low red heat. The loss in weight of the ignited cement shall not exceed 4 per cent.
Seite 13 - ... of the number of bales, the classification, the price or bona fide price offered, and other terms of purchase or sale, of any cotton involved in any transaction participated in by him, or to produce all books, letters, papers, or documents in his possession or under his control relating to such matter.