- Re: 1947 LC Smith 30" Field: how safe is the safety? Archived Message
Posted by jason on October 25, 2015, 7:01 pm, in reply to "Re: 1947 LC Smith 30" Field: how safe is the safety?"
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Ok, Safety blocks trigger from moving. That makes sense based on what it felt like. What I can't see, and probably won't see for a few years, is if the range of motion for the sear is limited by the trigger also. What I mean is: If the trigger is not able to pivot is there enough room in the mechanism for the sear to pivot and slide off of the hammer surface? I know the analogy is completely flawed, but I visualize a system similar to a 1911 and the LC Smith safety is functionally like the grip safety of the 1911. On the 1911, the grip safety prevents the trigger from moving. However, if the thumb safety were not limiting range of motion of the sear, it is mechanically possible for the sear to pivot enough to allow the hammer to fall and the firearm to fire. In the mechanism of the LC Smith shotgun, from what you are saying, some added another set of sears to prevent this from happening. However, I can conceive of a design that has the trigger both move the sear [when pulled] and limit the sear when not touched, so that the sear cannot slip off the hammer. Or, conversely, a trigger design where there is a different 'lobe' formed to align with a section of the hammer, so that the hammer cannot move off the sear unless the trigger is pulled to the rear. I never thought of these features as 'sears', and that is what throws me off. When I hear the word 'sear', I am thinking of a part that affects the smoothness of the trigger pull- not redundant safety mechanism. And I have NO idea what a 'tumbler' is for a shotgun action. A lot of this is my failure to be able to visualize how all of the parts work together. Overtime I am sure I'll have it apart and back together. I have heard references to some helpful tools, and I'll be tracking down the makers to get a few of them. Can't have enough tools! Thanks again to everyone who is helping me understand this action. I wish someone who understood all of this and had access to CAD software [or whatever type is useful] would create a 3-D animation or something to demonstrate how it all works together. The STI swf of the 1911 is my grail of such programs. If you haven't seen it and are interested in 1911s, it is worth checking out: STI 1911 interactive animation Yet, that is very complicated to do and I don't expect I'll ever have the knowledge or ability to make one. Thank you- all of you! 
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