Abstract: A steering guide laterally positions material running over rollers rotating in a roller carriage. The steering guide imparts angular displacement to a support platform positioned between a grooved inner track and a grooved outer track. The roller carriage, which may vary substantially is size and shape, is coupled with the support platform. The steering guide eliminates the need for a separate rack that supports the weight of the roller carriage. The steering guide thereby reduces complexity, cost, and spare part inventories, while simplifying assembly, installation, and maintenance. The steering guide also precisely locates the roller carriage with respect to a virtual center, thereby enhancing accurate steering of the web. In addition, the steering platform may be formed from strong but light aluminum, thereby reducing inertial forces that act when the steering guide moves the support platform.

Abstract: An optical metronome using sheets of music of non-sagging sheets of translucent material with notes spaced according to their value and vertically aligned measures on a display panel of light columns formed of vertical bars of triangular cross-section in white reflectors with an angular air gap and a light source for each bar. Circuitry coordinates sequential lighting of the bars in proper musical tempo and properly placed downbeat and is also attached or attachable to electronic organ circuitry or stands alone with automatic turn-off of lights to the bars if organ not counting.

Abstract: A package for a surgical blade or the like is provided which enables the blade to be readily attached to the elongated end of a handle without requiring the blade to be removed from the package during the manipulations attendant to the attachment. The package includes a flexible top panel and a flexible bottom panel which coact with one another to form an elongated blade-accommodating pocket having an opening therefor spaced from one end of the bottom panel. The accommodated blade has a slotted attachment end disposed adjacent the pocket opening. The handle end is inserted into the pocket opening between the blade and bottom panel and into the blade slot while the blade and associated panel portions are flexed a slight amount until the blade and handle end interlock with one another when the blade is returned to an unflexed condition and while the blade remains completely within the pocket. The handle end with the blade attached thereto is then withdrawn from the pocket out through the pocket opening.