EJECTOR GUIDE BLOCK
The outer end of the ejector blade is held in place and guided by the ejector guide block which sets directly back of the flange of the mold disk, and is held by two machine screws passing through each end of the block into the mold slide. This guide holds the blade in position so it will pass squarely through the mold. It also helps the buffer spring to steady the forward motion of the ejector. The point of contact of the ejector block with the ejector blade is made of brass and is held against the blade by spring tension.
The ejector blade guide should be kept free from oil, dirt, and metal shavings, as these impair the free working of the guide. The brass strip should be replaced when worn. Loose screws or a worn brass strip will cause slugs to be thrown out on the floor.
To Change an Ejector Blade
Push in on the starting and stopping lever; let the vise down to first position; back the machine by pushing back on cam No. 1 until the second elevator falls on the safety hook; turn the mold disk until the slot is in front of the blade; push the ejector lever forward; remove the blade by reaching the right-hand in alongside the mold slide and grasp the releasing lever and draw it towards the front. Change the blade for the size wanted, and then let machine come to normal position. Be careful not to get a blade wider than the slug to be cast or there is danger of damaging the liners, or the mold will be damaged. A good plan is always to check up on the ejector blade after changing the liners.
UNIVERSAL EJECTOR
The universal ejector consists of a series of blades, 5-points in thickness, in 2-em units; as a rule the first, or lower blade is a 4-em, and then in 2-em units up to 30-ems pica. These unit blades move between plates, which brace them firmly on both sides, making them rigid and preventing the blade from bending.
The back end of the unit blades are fastened to ejector blade links that move in grooves cut lengthwise of the slide. There is a link for each unit blade and they terminate at the back end of the mold slide in front of a groove milled across the slide. A movable controller bar works in a groove in the ejector slide, moving up or down in the groove, back of a lug on each of the blade links. When the ejector lever forces the ejector slide forward, the controller bar in the groove of the slide comes against the lugs of the ejector links forcing the blades forward through the mold.
The blades are withdrawn by a lug on the ejector slide coming in contact with the lugs on the links.
When desiring to change the length of the blade to be used, move the ejector blade controlling lever handle up or down. This handle is situated below the starting and stopping lever and is connected to the controller bar by a screw link. Also connected to this handle is a pica gauge which operates in a groove in the delivery channel.