In 1862, Georgia dentist, builder, and mechanic John Gilleland raised money from a coterie of Confederate citizens in Athens, Georgia to build the chain-shot gun for a cost of $350. Cast in one piece, the gun featured side-by-side bores, each a little over 3 inches in diameter and splayed slightly outward so the shots would diverge and stretch the chain taut. The two barrels have a divergence of 3 degrees, and the cannon was designed to shoot simultaneously two cannonballs connected with a chain to “mow down the enemy somewhat as a scythe cuts wheat”. During tests, the Gilleland cannon effectively mowed down trees, tore up a cornfield, knocked down a chimney, and killed a cow. These experiments took place along Newton Bridge Road northwest of downtown Athens. None of the previously mentioned items were anywhere near the gun’s intended target.
r*ddit

  • deegeese@sopuli.xyz
    link
    fedilink
    English
    arrow-up
    99
    ·
    3 months ago

    I’m guessing the main problem is the two barrels never detonate at the same instant, so the chain flings the shot wildly somewhere in the forward field of fire.

    Regular chain shot packs the projectile in a single barrel.

    • Dr. Bob@lemmy.ca
      link
      fedilink
      English
      arrow-up
      47
      ·
      3 months ago

      If I recall I don’t think barrels and balls were precision machined so there would always be “windage” or some sort of gap between the ball and barrel. So not only the timings as you identify, but also differences in force between the balls due to windage and charge.

    • Tankton@lemm.ee
      link
      fedilink
      English
      arrow-up
      5
      ·
      3 months ago

      Isnt this a super easy fix? Just make one detonation chamber connected to 2 barrels. Or make a longer barrel holding 2 balls with the chain between them.

      • SSTF@lemmy.world
        link
        fedilink
        English
        arrow-up
        6
        ·
        3 months ago

        The even easier fix is one barrel firing chain or bar shot. The method that had been done for at least 100 years at that point.

        The only real reason for two barrels is to try and get a longer chain to be more effective against infantry formations, but at that point just load grape or canister shot and it works better and the cannon crew has an easier time of reloading.

      • Aqarius@lemmy.world
        link
        fedilink
        English
        arrow-up
        1
        ·
        3 months ago

        In theory, yes. But in practice, option 2 is how it usually is done, and option 1 would still require scrapping the gun and casting a new one, assuming it would work and not throw the shot off based on the weight difference of the balls.

      • warbond@lemmy.world
        link
        fedilink
        English
        arrow-up
        1
        ·
        3 months ago

        I think one chamber with two barrels would propel the projectiles unevenly, wouldn’t it?