Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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boomer press

A now obsolete modified form of the STANDING PRESS . The power of the boomer press was obtained by a combination of four levers working on toggle joints, through which passed a right and left hand screw. The rotation of these screws caused the pressing surfaces to approach or move apart with a uniform motion, according to the direction of the rotation. This press had several advantages over the regular standing press, including: 1) once the pressure was applied it did not release slightly as the ordinary press is likely to do, so that the material under pressure remained under full pressure, and could, therefore, be pressed in somewhat less time; and 2) the enormous pressure it was capable of exerting. (8 , 97 )

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