The boys' book of engine-building; . BRASSPM Fig. 47. A Lever Safety Valve. through the disks as shown at B in Fig. 47 andscrew the disks together on the other side. Make a lever inch thick, Vs inch wide and2% inches long; drill a hole in one end of it andset the end of the lever in the slotted end of thestandard and pivot it with a pin. The plug can be made of lead, type metal orbrass; it must be a shade larger than % inch atthe bottom and a trifle larger than %6 inch atthe top. If it is made of lead, or type metal, n8 The Boys Book of Engine-Building you can fit it into the valve hole st
The boys' book of engine-building; . BRASSPM Fig. 47. A Lever Safety Valve. through the disks as shown at B in Fig. 47 andscrew the disks together on the other side. Make a lever inch thick, Vs inch wide and2% inches long; drill a hole in one end of it andset the end of the lever in the slotted end of thestandard and pivot it with a pin. The plug can be made of lead, type metal orbrass; it must be a shade larger than % inch atthe bottom and a trifle larger than %6 inch atthe top. If it is made of lead, or type metal, n8 The Boys Book of Engine-Building you can fit it into the valve hole steamtight bypressure and turning it around, but if it is ofbrass you will have to grind it with fine emerymixed with oil. Drill a /46-inch hole through the center andpush a brass wire % inches long and threaded onboth ends through it; screw a nut on both endsand file a groove in the top end of the wire sothat the lever will rest in it. All that is left to be done is to make the weight;this can be a piece of rod V2 inch in diameter and% inch long; saw a slot Yi6 inch wide
Size: 2087px × 1197px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpub, booksubjectsteamengines
