. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . guide for locomotives. It is 13 ft. lYz in. longover all. There is a botton piece B Ji in. thick and 6 on wheel which are set the two side pieces, C, meas-uring lyi in. by 2^ in. and above these are the two toppieces D measuring % in- by 2 7/32 in. The whole struc-ture is held together by fillister headed screws spaced 12in. apart from center to center. To one end of this structure the stationary dog E isfastened. This dog extends across the full width of thebase, and its teeth rise 1
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . guide for locomotives. It is 13 ft. lYz in. longover all. There is a botton piece B Ji in. thick and 6 on wheel which are set the two side pieces, C, meas-uring lyi in. by 2^ in. and above these are the two toppieces D measuring % in- by 2 7/32 in. The whole struc-ture is held together by fillister headed screws spaced 12in. apart from center to center. To one end of this structure the stationary dog E isfastened. This dog extends across the full width of thebase, and its teeth rise 1 in. above its upper surface. Thiswith the base forms the fixed portion of the device. At the other end the clamping dog F is inserted. Thishas a bearing face lOyi in. long that extends into thespace formed by the parts B, C and D, and its length pre-vents it from tilting when it is drawn against the bolt 1,14 ill- in diameter is passed through the holes inthe two dogs and b> means of the nuts at the ends the twoare drawn towards each other. c: — 7^—>k- -I—(■ w ---^ © © c:i1. BOLT Jig for Shoe and Wedge Planer When setting up, a spacing dog F is placed betweeneach two shoes or wedges so that each piece is caughtand held at each end. These dogs, like the movable end dog, have jaws 4 , but unlike the other two their jaws are made torise to different heights above the top of the base accord-ing to the character and thickness of the work that theyare to hold. They are made in four sizes for the dimen-sion A, namely 1 in., 1^ in., and 2^/4 in. In setting up the work is laid on top of the base andone of these spacing dogs is dropped down between eachtwo adjacent pieces. The 1>4 in- holt is then passedthrough the set and, by tightening one of the end nuts, thewhole is clamped firmly together. When the work is done a loosening of an end nut makeseverything free and it is unnecessary to remove the tight- ening bolt either to take off the finished pieces
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
