Abstract: An improved supply tank opening cover assembly facilitates excellent fluid transfer between a supply tank and a reservoir, while minimizing leaks. Useful in machines that produce or affix labels, such as franking machines, the preferred embodiment of the assembly includes: an outer cap with an aperture for fluid transfer therethrough; an elastomeric flap placed in the outer cap; a spring member that impinges at one end on the flap, and impinges at the other end on a portion of a support cage; and an inner gasket. With the aid of the spring member, the flap is biased to normally cover the aperture and prevent leakage of the fluid. To allow the transfer of fluid from the supply tank to a reservoir, a reservoir peg is inserted into the aperture and displaces the flap from its sealed position. Liquid transfer from the supply tank to the reservoir is aided by the transposition of air from outside the tank to replace vacated supply tank liquid.

Abstract: A cutting element substrate for use with an earth-boring drill bit. The substrate includes a base, or outer shell, with a cavity opening to an end thereof. The base is fabricated from an erosion-resistant and abrasion-resistant material. A core that is configured substantially complementarily to the cavity is disposed within the cavity. The core base is fabricated from a material that is more ductile than the material of the base. The core and base each includes a cutting end to which a superabrasive cutting table, such as a polycrystalline diamond compact, may be secured. The substrate may be secured within a corresponding receptacle of a bit body in order to secure a superabrasive cutting table to the bit body in a desired orientation. The present invention also includes methods of fabricating the cutting element substrate.