Rock Drilling, With Particular Reference to Open Cut Excavation And Submarine Rock Removal
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In our eReader you can find the full English version of the book. Read Rock Drilling, With Particular Reference to Open Cut Excavation And Submarine Rock Removal Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Rock Drilling, With Particular Reference to Open Cut Excavation And Submarine Rock Removal
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To quickly assess the difficulty of the text, read a short excerpt:
U-chuck.
Steam pressure 100 lbs. gauge at boiler.
Number of strokes, about 300 per minute.
The principle on which the drill frame is moved along the deck is the common hydraulic. The hydraulic cylinder in this case is 9' in length. The tracks on which the frames slide are 1X3" plate laid on a 4X6" sill at the edge of the deck and a 45-lb. standard rail for the rear track. For holding the frame in any given position a chain passes near the rear of the frame.
Each machine has one of these chains ...that is fastened at the 200 ROCK DRILLING ends to the deck. When the drill is in its desired position it is held there by snapping a clamp into a convenient link of the chain and thereby fastened securely to the rear part of the frame.
Steel bits have 4^" and 4" points.
Point is made of black diamond steel.
Length of steel, 37' 6" Circular section of steel 2 and 2I" in diameter.
Fig. 92. — Drill Boat " Exploder.
Steel handled by hand with the assistance of a hook hanging from ceiling.
Steel tempered hard till file will not touch.
What to read after Rock Drilling, With Particular Reference to Open Cut Excavation And Submarine Rock Removal?
You can find similar books in the "Read Also" column, or choose other free books by Richard Turner Dana to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
U-chuck.
Steam pressure 100 lbs. gauge at boiler.
Number of strokes, about 300 per minute.
The principle on which the drill frame is moved along the deck is the common hydraulic. The hydraulic cylinder in this case is 9' in length. The tracks on which the frames slide are 1X3" plate laid on a 4X6" sill at the edge of the deck and a 45-lb. standard rail for the rear track. For holding the frame in any given position a chain passes near the rear of the frame.
Each machine has one of these chains ...that is fastened at the 200 ROCK DRILLING ends to the deck. When the drill is in its desired position it is held there by snapping a clamp into a convenient link of the chain and thereby fastened securely to the rear part of the frame.
Steel bits have 4^" and 4" points.
Point is made of black diamond steel.
Length of steel, 37' 6" Circular section of steel 2 and 2I" in diameter.
Fig. 92. — Drill Boat " Exploder.
Steel handled by hand with the assistance of a hook hanging from ceiling.
Steel tempered hard till file will not touch.
What to read after Rock Drilling, With Particular Reference to Open Cut Excavation And Submarine Rock Removal?
You can find similar books in the "Read Also" column, or choose other free books by Richard Turner Dana to read onlineMoreLess
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