Comments by "" (@neutronalchemist3241) on "Tribuzio Ring-Trigger Squeeze Pistol" video.

  1. The difference between 7.65mm and 8mm (0.35mm) is largely semantic. It depends if you measure the bore between the lands or the grooves of the barrel, and both methods are used. IE the .32 ACP (also known as 7.65 mm Browning) has a real diameter of the bullet of 7.94mm.
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  2. You underestimate the massive psycological effect of the Zip 22. Every tough guy screams in orror when the Zip 22 is pointed at him. Because there's a slim chance that it will work and injure him, and then, for the rest of his life, he will have to admit to have been injured by a Zip 22.
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  3. It's not locked by the finger. it's called an expander lock. Due to the direction of the respective inclined surfaces, when the bolt is pushed back by the recoil, it can only push the lever downward and not rearward, so the bolt is locked. https://patents.google.com/patent/US461968A/en
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  4. That's the patent. https://patents.google.com/patent/US461968A/en Being the lever quite sturdy, it's only the strenght of the frame that limits the power of the cartridge (Notice that the frame wraps around the pivoting point of the lever, so that it's not the hub to be stressed). In theory you can made a Tribuzio in .45 ACP capable to accept 1911 magazines. And it will still be quite compact (the bore axis is so low that the recoil will be even pleasant).
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  5. It's breechlocked. Here's the patent. It's called an "expander lock". The lever locks the bolt like a chair put at an angle under the door knob. In theory there's no limit to the power of the ammunitions this gun can use, as long as the frame is strong enough. https://patents.google.com/patent/US461968A/en
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  6. Unfortunately Ian left out the fact that's actually already a locked breech gun. It's called an "expander lock". In theory there's no limit to the power of the ammunitions this gun can use, as long as the frame is strong enough. https://patents.google.com/patent/US461968A/en
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  7. Here's the patent. It's called an "expander lock". The lever locks the bolt like a chair put at an angle under the door knob. In theory there's no limit to the power of the ammunitions this gun can use, as long as the frame is strong enough. https://patents.google.com/patent/US461968A/en
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  8. In theory you can made a Tribuzio in .45 ACP capable to accept 1911 magazines. And it will still be quite compact (the bore axis is so low that the recoil will be even pleasant).
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  9. No, it's called an "expander lock" patent US461968A. Due to the position of the pivots, the recoil tend to push the intermediate lever against the frame and not to make it rotate. There's no limit to the power of the cartridge that breech can control, as long as the frame is strong enough.
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  10. Add that, even if Ian didn't mention it, the cocking lever doubles as the locking wedge (the gun is actually breechlocked).
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  11.  @CreedManiac99  To move by bicycle and with a gun in the pocket was pretty common at the time for middle class men. And bar brawls that ended up with a shooting were common too.
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  12. The lever. It's like a chair put at an angle under the door knob.
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  13.  @antoniofdez620  Here's the patent. https://patents.google.com/patent/US461968A/en and a schematic https://ibb.co/NZW8KDm
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  14.  Lassi Kinnunen  Design patents expire in 15 years.
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  15. That's the patent. It's called an "expander lock". The lever locks the bolt like a chair put at an angle under the door knob. In theory there's no limit to the power of the ammunitions this gun can use, as long as the frame is strong enough. https://patents.google.com/patent/US461968A/en
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  16. Yeah.
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  17. It's called an expander lock. Due to the direction of the respective inclined surfaces, when the bolt is pushed back by the recoil, it can only push the lever downward and not rearward, so the bolt is locked. https://patents.google.com/patent/US461968A/en Other than the ejector doubling as the sear, the cocking lever doubles as the locking wedge. Being the lever quite sturdy, it's only the strenght of the frame that limits the power of the usable cartridge (Notice that the frame wraps around the pivoting point of the lever, so that it's not the hub to be stressed). In theory you can make a Tribuzio in .45 ACP capable to accept 1911 magazines. And it will still be quite compact (the bore axis is so low that the recoil will be even pleasant).
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  18. It's probably the diameter of the bullet, like the .32 ACP/7.65mm Browning has a 7.94mm diameter bullet.
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  19. No, it's called an "expander lock" patent US461968A. Due to the position of the pivots, the recoil tend to push the intermediate lever against the frame and not to make it rotate. There's no limit to the power of the cartridge that breech can control, as long as the frame is strong enough.
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  20. The similar .32 Extra Short had about the same power than a modern .25 ACP.
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  21. Unfortunately Ian left out the fact that's actually a LOCKED BREECH gun. It's called an "expander lock". In theory there's no limit to the power of the ammunitions this gun can use, as long as the frame is strong enough. https://patents.google.com/patent/US461968A/en
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  22. The .32 short develops twice the energy of a .25 ACP and it falls just short of a .32 ACP. Not super powerful, but nothing to laugh about.
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  23. Found the patent. it's called an expander lock. Due to the direction of the respective inclined surfaces, when the bolt is pushed back by the recoil, it can only push the cocking lever downward and not rearward, so the bolt is locked. https://patents.google.com/patent/US461968A/en
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  24. Unfortunately Ian left out the fact that's actually a locked breech gun. It's called an "expander lock". In theory there's no limit to the power of the ammunitions this gun can use, as long as the frame is strong enough. https://patents.google.com/patent/US461968A/en
    1
  25. Unfortunately Ian left out the fact that's actually a LOCKED BREECH gun. It's called an "expander lock". In theory there's no limit to the power of the ammunitions this gun can use, as long as the frame is strong enough. https://patents.google.com/patent/US461968A/en
    1
  26. Unfortunately Ian left out the fact that's actually a LOCKED BREECH gun. It's called an "expander lock". In theory there's no limit to the power of the ammunitions this gun can use, as long as the frame is strong enough. https://patents.google.com/patent/US461968A/en
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  27.  @grayeaglej  It will be enough to have two flat bars passing around the magazine instead one passing under it. Think of how the trigger bars of a modern semiauto pass around its magazine. https://www.youtube.com/watch?v=h7ri33LDHZk
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  28. Found the patent. it's called an expander lock. Due to the direction of the respective inclined surfaces, when the bolt is pushed back by the recoil, it can only push the lever downward and not rearward, so the bolt is locked. https://patents.google.com/patent/US461968A/en
    1
  29. It's called an expander lock. Due to the direction of the respective inclined surfaces, when the bolt is pushed back by the recoil, it can only push the lever downward and not rearward, so the bolt is locked. https://patents.google.com/patent/US461968A/en Other than the ejector doubling as the sear, the cocking lever doubles as the locking wedge. Being the lever quite sturdy, it's only the strenght of the frame that limits the power of the usable cartridge (Notice that the frame wraps around the pivoting point of the lever, so that it's not the hub to be stressed). In theory you can make a Tribuzio in .45 ACP capable to accept 1911 magazines. And it will still be quite compact (the bore axis is so low that the recoil will be even pleasant).
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  30. The similar .32 extra short has about the same power of a modern .25 ACP. so yes, it can kill.
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  31. Probably. The .32 ACP (7.65 Browning) real diameter of the bullet is 7.94mm. The ammos were marked "8mm". https://topwar.ru/42773-pistolet-molniya-pistola-lampo-katello-tribucio.html
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  32. It's called an expander lock. Due to the direction of the respective inclined surfaces, when the bolt is pushed back by the recoil, it can only push the lever downward and not rearward, so the bolt is locked. https://patents.google.com/patent/US461968A/en Other than the ejector doubling as the sear, the cocking lever doubles as the locking wedge. Being the lever quite sturdy, it's only the strenght of the frame that limits the power of the usable cartridge (Notice that the frame wraps around the pivoting point of the lever, so that it's not the hub to be stressed). In theory you can make a Tribuzio in .45 ACP capable to accept 1911 magazines. And it will still be quite compact (the bore axis is so low that the recoil will be even pleasant).
    1
  33. No, it's called an "expander lock" patent US461968A. Due to the position of the pivots, the recoil tend to push the intermediate lever against the frame and not to make it rotate. There's no limit to the power of the cartridge that breech can control, as long as the frame is strong enough.
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  34. Tribuzio patented the gun both in UK and USA in 1891, so probably yes, he was thinking about exporting them.
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  35. Looking at the movement of the lever when Ian releases the "trigger" (the lever recoils, but for some mm of movement the bolt doesn't follow) there is probably a lock in the last part of the movement, that's released only when the lever goes backward. https://youtu.be/-8Nm89NQK-A?t=388
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  36.  @tiortedrootsky  Yeah.
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  37. 54 grain bullet at 650 fps with 51 ft.-lbs. of energy.
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