Highfield lever Highfield lever A Highfield lever is a lever device which allows tension to be rapidly set up in a wire and equally rapidly released to the required extent. It is frequently used in sailing boats where tension in some part of the rigging needs to be adjusted to a pre-set amount as the wind impinges on one side of the sails or the other. It is typically used in running backstays (runners). To make it work, the backstay is led through a block or fairlead along the deck to a two-legged, second order lever mounted with its fulcrum above deck
Colt Ring Lever rifles a year after acquiring fifty First Model rifles, Colonel Harney remarked that all but two were in good working order. Later in July 1839, however, a surprise Seminole attack led to the loss of thirty Ring Lever rifles, though fourteen were eventually recovered. In spite of the rifle's reliability problems, support for Colt's rifles was garnered from field officers, especially from Lieutenant Colonel Harney. Harney commented on Colt's Ring Lever rifle favorably, stating: "I honestly believe that, but for these arms, the Indians would now be luxuriating in the Everglades of Florida." Colt capitalized on Harney's testimony to produce a