. American engineer . r Turning Wrist Pins. lathe and trips the dog B, disengaging it from the arm D andallowing the coil spring E to pull the crosshead back to its start-ing position. Fig. 3 shows the crosshead just ready to betripped. The construction of the driving-dog is shown inFig. 4. When the arm F. located on the rear of the dog in a recess, comes in contact with C (Fig. 1), it turns the pin Gwhich bears on the projecting arm D on tlie crosshead. One-half of the end of pin G is cut away. This allows it todisengage from D when it is turned by the arm C. A springis fastened to the arm F
. American engineer . r Turning Wrist Pins. lathe and trips the dog B, disengaging it from the arm D andallowing the coil spring E to pull the crosshead back to its start-ing position. Fig. 3 shows the crosshead just ready to betripped. The construction of the driving-dog is shown inFig. 4. When the arm F. located on the rear of the dog in a recess, comes in contact with C (Fig. 1), it turns the pin Gwhich bears on the projecting arm D on tlie crosshead. One-half of the end of pin G is cut away. This allows it todisengage from D when it is turned by the arm C. A springis fastened to the arm F so as to return it to its original posi- ^^ li^^~M, 1 1 t^^^m ^ ^.. mm^^^mm , , ^^m m ~- •^^3wev»«4F*l viu ^Igg^tmmmm UIMmiwjsna Fig. 3—Crosshead Just Ready to be Tripped. tion after it has passed C. In this way the faceplate may ro-tate continuously and only turn the crosshead through one-half a revolution. One side of the crosshead pin is turned inthis manner and then the crosshead is reversed in the machine. Fig. ing-Dog for Turning Crosshead Wrist Pins. and the other half is turned. This device is simple andexpensive, does good work and may be applied to any englathe with a faceplate. Connections Between Valencia and Madrid, —The mucli talked of direct line from Valencia, Spain, to Madridhas not been included in the new law authorizing complimen-tary railways in Spain. The law only makes reference to theproposed line filling up the gap between the termini of existingImes at Cuenca and Utiel, and the Valencia people are not satis-fied with this route, which is circuitous. On the other hand only89 miles of line have to be built to connect these two termini,while of the proposed direct line via Motilla nothing is completedbut the section from Valencia to Utiel. Valencia is the onlylarge coast town which is not placed on one of the many directlines which radiate from Madrid to the coast, although it isnearer than any other. As the crow flies the distance bet
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
