![]() Most people do not care to get this technical but there are many small changes in the first and second model and even the third model which show a progession of design changes to manufacture the safest and best top break revolver. Third model= four pins on frame between cylinder and trigger Second model= two pins on frame between cylinder and trigger the majority of the safety automatic revolver do fall into these two types.įor a quick and easy way to tell the first and second and the thrid models apart. stop) and the last fourth type (collar and lug auto cyl. your pictures only show the second (threaded cylinder bushing non auto cyl. no cylinder outside of these types are interchanable. Iver Johnson Small Frame Old Model Grips. Antique Iver Johnson Top Break Caliber 32 Sw Revolver Grips. Iver And Johnson Us Topbreak Small Frame Pistol Grips Black Plastic With Screw. Only the cylinders within these four types are interchangable. Iver Johnson Model 55 Or 57 Target Revolver Parts Lot Grip. Value (if any) Top break, 5 round cylinder, wood grips. These changes were made in all calibers 22, 32 and 38. Looking to find out the year and more details about this gun.stop)ġ895-1908= threaded cylinder bushing (non automatic cylinder stop)ġ909-1910= threaded cylinder bushing (automatic cylinder stop)ġ911-1942= collar on cylinder bushing and lug on barrel ( automatic cyl. In total there are four type of cylinders used of the safety automatic revolver.ġ894-only= retained by hook on bottom of top strap (non automatic cyl. 32 Sw Nickel Side Latch Center Post Model. this is very postive and did away with the threads on the cylinder bushing which tended to wear with age. More Information Manufacturer: Iver Johnson: Model: Top Break. Iver Johnson Top Break Revolver 4 Barrel Cylinder Parts Lot Repair. in 1911 a new type of cylinder retainer was introduced, having a lug on the bottom of the forcing cone that had to be match up to a slot on the cylinder bushing. these use the rectanglar postive stop and the cylinder stop is a seperate part. when the thrid model was introduced in 1909 one of the changes was an automatic cylinder stop was added. most first models and all second models use the threaded cylinder bushing to retain cylinder (1895-1908). these have the long enlongated cylinder stop, early first models have a hook on the top strap to retain cylinder(1894 only). the cylinder stop is actually made as part on the trigger and not a seperate part. All first and second model safety automatic revolvers have non-automatic cylinder stop.
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