Abstract: A breech block firearm safety device for the prevention of injury to children having unauthorized access to loaded firearms. This device will also protect gun owners from injury due to mishandling or the dropping a loaded weapon. The safety device utilizes a two piece blocking assembly having a breech member and a bore member. The breech member is inserted into the breech just as you would insert a live round to arm a weapon. The bore member is inserted into the muzzle of the firearm and screw connected to the breech member using special tooling. The chamber blocking assembly can be easily extracted but the overall length is such that the end of the bore member remains in the breech making ejection impossible. The assembly can only be returned to the breech, making manual or automatic loading of live ammunition impossible. When the above safety device is installed in a revolver the overall length prevents the rotation of the cylinder and prevents the loading of live ammunition into firing position.

Abstract: The bearing comprises a roller race formed from flat sheet material. The roller race has a roller raceway and an indent. A plurality of rollers are in contact with the roller raceway and are located in the roller race. A split ring spring member provides an axial thrust face for the rollers.The formed roller race is heat-treated. The rollers are inserted into the formed race in a single step; the split ring spring member is then placed into the indent to provide the axial thrust face for the rollers.

Abstract: A protrusion is formed on the free end of an axially extending lip of an outer race member. The free end of the protrusion is axially and radially spaced from the free end of the remaining part of the axially in-turned lip to permit the passing of a reduced end of a reduced end roller. The reduced end rollers are inserted into the outer race member through the protrusion. After all the rollers are in place within the outer race member the free end of the protrusion is closed by heating the protrusion and pressing the protrusion to provide an in-turned lip of substantially the same shape throughout the circumference of the lip.