Abstract: A method of producing an animal food supplement by growing a yeast that utilizes lactose on a mixture of wheat bran or husks from different grains which are mixed with dried whey, moistened with water, cooled and inoculated with yeast, a dairy culture used in making buttermilk, and Lactobacillus acidophilus, placed on perforated trays, then incubated for 12 to 24 hours at 27.degree. to 34.degree. C. and dried at 43.degree. C. and lower.

Abstract: A nut provided with a U-shaped slot laterally and threadably engagable with a rod or shaft, in combination with a C-shaped retainer member mounted on the nut and manually rotatable thereon to selectively: (a) confine the nut on the shaft in relatively rotatable lateral engagement, (b) lock the nut and shaft against relative rotation, and (c) connect the nut and shaft for yielding lateral threaded engagement and disengagement.

Abstract: A credential holder adapted to display identification data while worn upon an upper horizontally disposed border or selvage of an upright garment layer, or to display the data while manually held. The holder is composed of three flat data-bearing rectangular panels which, when unfolded, has an L-shaped outline. The panels of the unfolded holder are selectively foldable one upon the other to several laminated positions in each of which at least the data face of one of the panels is exposed to view. The three panels also may be folded into a compact package in which all of the data faces are concealed.The holder is further characterized by the provision of a detachable supplemental folder laterally adjustable and coincidable with the fold lines of the panels.

Abstract: A reversible cycle ice making machine provided with a tube-in-tube evaporator having disposed between the tubes thereof an annular chamber through which a refrigerant is adapted to flow and bond a hollow ice column upon the inside surface of the inner tube during the freezing cycle; and during the succeeding defrost cycle, to thaw the bond by a dual acting defrost system.One of the defrost actions of the system is effected by flowing a defrost fluid, such as hot gas, endwise through the annular chamber to cause the refrigerant remaining the chamber from the preceding freezing cycle to be progressively replaced by the defrost fluid while the ice column bond is progressively thawed in the endwise direction. Thus, the length of the chamber containing the defrosting fluid progressively increases as the complementary length containing the remaining refrigerant fluid decreases during the flow of both fluids in tandem and downstream through the chamber.

Abstract: A combination identification storage and display case adapted to serve the dual purpose of storing an attached insignia member therein and of fitting in a garment pocket while displaying the member on the pocket exterior.