Self-leveling dispenser

US3941440A · kind A · utility

Assignee

• Peters · FR

Inventors

• Marvin Menzin · Lexington, US
• Hugh Robinson · Stuttgart, DE

Key dates

• Filing date: Sep 17, 1974
• Grant date: Mar 2, 1976
• Expiry date: Sep 17, 1994

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65G1/07
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

Self-leveling dispenser of the type having an elongated lever which serves to balance the spring and platform, with a member being adjustable along the lever for altering the ratio of effective moment arms to change the effective spring rating of the dispenser. An adjustment feature comprises felxible strands connected to opposite sides of the adjustable member. By means of a pulley surface, both strands leave the lever at the pivot point and proceed to a take-up pay-out device, shown as a dentent-controlled reel. For avoiding working against the spring during adjustment the lever concavely curves about the line of action of a tension spring acting upon the lever. In combination of these features the strands are guided by longitudinally convex surfaces of the curved member. The platform and spring loads are shown to act in one diagonal direction of a rectangular frame with the frame braced by a tension member extending in the opposite diagonal direction.