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These are the two patterns for the #4 Fisher double screw vise. The patterns are sitting in their carriers. When used, the half was rammed up using special dedicated flasks. Then the whole assembly was flipped over, the carrier removed, and the other special flask half was attached. The second half was then rammed up. If you own a #4 Fisher Vise, it was made using this pattern. You might notice that the "tooth" is not on the front (left) pattern. In the later years, the pattern was modified and that part was eliminated. The front vise jaw was totally supported by the screws.
This is probably the best condition pattern I saved in 1999 from the Crossley factory before disposal and demolition. A unique feature of this pattern is that the Eagle logo is on an internal cam setup that allows the Eagle to move out and make the impression in the mold, then be withdrawn into the pattern to allow for the pattern removal(so as not the break the mold.) The top black part is the preheat pattern. This made a void in the mold for the molten iron to preheat the steel for welding. Remember, these were cast up-side down, so the black part in the mold was the lowest part.