Abstract:
8680. Stewart, W. C. April 15. Handles. - The shaft of a pick-axe is provided with a tapered elliptical ferrule a, to fit the eye in the head b, and made in two halves secured with a screw d. The ferrule is countersunk to bring the head of the screw flush, and is strengthened at the portion e where the screw enters and may have ribs or projections f. By making the ferrule deeper than the head, the shaft is strengthened and given an increased gripping-surface,
Abstract:
A medication dispensing apparatus having a gear set (64) to provide a mechanical advantage to the plunging of the apparatus plunger (66). The gear set (64) has a first pinion (114) in meshed engagement with a rack of the plunger (102), and a second pinion (126) in meshed engagement with a rack of a drive member (80) of the apparatus. The gear set (64) operatively interconnects the plunger (66) and the drive member (62) such that after the plunger (66) is moved relative to the housing in a proximal direction to prepare the apparatus for injection, the plunger (66), when manually pushed back toward the housing, causes the drive member (62) to advance in a distal direction to force medication through an outlet, typically provided with an injection needle, at the distal end of the apparatus.