Abstract: In an index selector device of the kind for use with a stack of index cards housed between a base and a lid hinged together and having a selector on the lid to release the lid after moving card-engaging members into engagement with a card so as to raise all the cards in the stack above the one required, the selector is a plurality of push buttons, one to each card-engaging member, arranged in two rows at right angles to the hinge. Interengaging inclined surfaces on each push button and card-engaging member cause lateral sliding movement of the card-engaging member on depression of the push button. A hook on the card-engaging member moves under the edge of the card above the one required and co-operating inclined surfaces on the inner end of the card-engaging device and a central catch bar cause the catch bar to release the lid. A barb on the card-engaging member hooks into a recess on the catch bar to hold the card-engaging member in the card-engaging position while the lid is open.

Abstract: A display pack for the display and sale of an article or articles of mechandise such as a hair brush or comb which exposes a part of the article so that its quality can be tested by a prospective purchaser yet contains the article well enough to make pilfering from the card difficult. In one type of pack an article is held on a backing sheet by two flanged, transparent cover elements mounted by their flanges on the backing sheet and covering opposite ends of the article leaving the part between exposed. In another type of pack a single cover element encloses, for example, the handle of a hair brush, and another part of the article, for example the back of the brush, is held by an opening in the backing sheet. The cover elements can be made in pairs by vacuum forming sheet material with a raised central portion surrounded by a continuous peripheral flange and cutting the elements apart across the raised portion.