Abstract: A plastic molded snap fastener including a stud head having solid thin annular base flange and a top, the top and the flange being held in spaced relation by radial ribs preferably in the form of a cross piece, the top being annular but "flattened" on the outer perimeter in the area of the ends of the cross piece. Where the plastic is compatible with the plastic of the fabric, the fastener parts may be molded directly on the fabric. In a modification the base flange is split by a plane perpendicular to the axis of the fastener part. The base fabric is sandwiched between the parts of the flange. This modification is useful where the plastic of the fastener is not compatible with the plastic of the fabric. The invention also includes a mold apparatus for forming the fastener on a strip of fabric wherein core pins on one side of the mold cooperate with spring-pressed ejection pins on the other side and with cavities in the mold retainer plates to shape the parts.

Abstract: A plastic molded snap fastener including a stud head having solid thin annular base flange and a top, the top and the flange being held in spaced relation by radial ribs preferably in the form of a cross piece, the top being annular but "flattened" on the outer perimeter in the area of the ends of the cross piece. Where the plastic is compatible with the plastic of the fabric, the fastener parts may be molded directly on the fabric. In a modification the base flange is split by a plane perpendicular to the axis of the fastener part. The base fabric is sandwiched between the parts of the flange. This modification is useful where the plastic of the fastener is not compatible with the plastic of the fabric. The invention also includes a mold apparatus for forming the fastener on a stip of fabric wherein core pins on one side of the mold cooperate with spring-pressed ejection pins on the other side and with cavities in the mold retainer plates to shape the parts.

Abstract: The disclosure is of a spring cartridge for a spring operated re-wind mechanism such, for example, as those used with pull cord type engine starters.

Abstract: The disclosure is of a mechanism for raising and lowering a window, such as the window of an automobile, the mechanism being of the type in which a flexible belt or chain connected to the window is moved along a fixed track, and a window counterbalancing spring is provided.

Abstract: The invention relates to a spring assembly for retracting a spirally wound seat belt to retracted condition after extension in use, and provides means for locking the spring in pre-wound condition prior to assembly with the seat belt.

Abstract: The invention is a spring device which is connected to the shaft on which a seat belt or the like is spirally wound and which is operable to retract the strip to a wound condition after it is extended and released, in which means are provided for holding the spring in pre-wound condition prior to installation in a seat belt assembly.

Abstract: The disclosure is of a spring operated re-wind mechanism such, for example, as those used with pull cord type engine starters.