Abstract: A microfiche card storage and retrieval system comprising a carousel for storing microfiche cards, card transport means for inserting and retracting microfiche cards from said carousel, said card transport device having an extended position in the plane of its movement, a card load-unload chute disposed above said carousel and defining a card-receiving chute in the plane of movement of said card transport device, the card-receiving chute comprising stop means across the chute to prevent a card from inadvertently being moved into the storage and retrieval system, means for retracting said stop means, means adjacent one edge of said chute for limiting the height of the chute to prevent oversized cards from being inserted through the chute into the storage and retrieval system, and means opposite the insert side of said chute for guiding a microfiche card moved by said transport means into said chute.

Abstract: A microfiche card storage and retrieval system utilizes a card transport to remove or insert a card from a support tray. The card transport has two pairs of fingers spaced to grasp the edge of a card and are opened to grasp an edge of the card in the tray and as the card is withdrawn the pairs of fingers separate to tension the edge of the card between the pairs of fingers.

Abstract: A portable opaque projector is characterized by a transportable mode and an operable mode. When in its transportable mode, the projector has the configuration of a compact hexahedron; when in its operable mode the top and sides of the projector are opened up, and a mirror is mounted to the top.

Abstract: A clock which comprises a clock face, a casing, and a clock mechanism positioned within the casing. In accordance with this invention the casing defines separable walls, and latch means for retaining the walls in an integral, casing-defining position, with the latch means being openable to allow separation of the walls. A striker member is operatively connected through a linkage to the latch means whereby striking of the striker member can open the latch means to permit the walls to move from their integral, casing-defining position to their separated positions.

Abstract: A measuring device for ascertaining the perimeter of a cross-section of a body comprising an integral tape and slide guide. Laterally extending tabs at one end of the tape are foldable over a portion of the tape bent back upon the tab bearing end to form the slide guide. An aperture in the tab bearing end cooperates with indicia on the tape to display the perimeter of the tape loop extending from the slide guide.

Abstract: The invention disclosed concerns a method of selecting a standard glove size. The method includes the steps of selecting a pair of two dimensional measurements which are correlated to hand volume, dividing a population of hand volumes into a predetermined number of approximately equally populated subgroup ranges, plotting two dimensional chart areas for each subgroup based upon intersections of the selected two dimensional measurements with reference to a predetermined point on the chart, and assigning one of the standard sizes to each chart area. The method further includes the steps of placing a hand on the predetermined point and plotting the intersection of the pair of two dimensional measurements for the hand to select the proper standard glove size. The chart can include areas for both left and right hands and the predetermined point can abut the web space between the middle and index fingers on the hand.

Abstract: Ground water containing ferrous compounds is first treated with aluminum sulfate before aeration followed by lime addition after aeration to produce an iron-aluminum sludge possessing an oxidative capacity. Portions of the sludge are recycled back to utilize the oxidative capacity of the sludge. Chlorine is added after the oxidative capacity of the sludge has been utilized. An improved oxidation and removal of iron is obtained, yielding a treated water low in iron content with decreased requirements for chlorine.

Abstract: A device for affecting deflection control of an elongated stringed musical instrument neck or shaft is provided to compensate for undesired neck deflections. The device includes a substantially rigid sleeve which is carried within and extends along the neck. At least one core element is removably positioned within the sleeve. A control element is adjustably secured to the sleeve and cooperates with the core element or elements to exert deflection control forces on the sleeve. The sleeve in turn, imparts such deflection control forces to the elongated neck or shaft in which it is carried.