Abstract A lock cylinder body is fabricated of a strip of sheet metal with the central portion thereof folded upon itself to define an approximate cylinder and with the end portions extending approximately radially from said cylinder and disposed against each other to define a tumbler tongue in which there are opposed, concave surfaces defining pin tumbler chambers at least partially covered by an integral lip on at least one of the strips. The lock cylinder body is made by bending the central portion of a sheet of strip metal around a cylindrical form until the end portions of the strip are in substantial juxtaposition on opposite sides of a rod projecting radially from the form and then pressing the end portions toward each other until at least one of the end portions deforms around the rod.
A lock cylinder body comprising a strip of sheet metal having a central portion folded upon itself to define an approximate cylinder and having end portions extending approximately radially from said cylinder and disposed adjacent to each other with a gap between them defining a tumbler tongue, and means on and integral with at least one of said end portions forming a tab disposed to extend from said one end portion at least part way across said gap.
Claim 2
Dependent Claim
78 words
A lock cylinder body comprising a strip of sheet metal having a central portion folded upon itself to define an approximate cylinder and having end portions extending approximately radially from said cylinder and disposed adjacent to each other with a gap between them defining a tumbler tongue, and means on and integral with at least one of said end portions forming a tab disposed to extend from said one end portion at least part way across said gap.
Claim 3
Dependent Claim
24 words
A lock cylinder body as in claim 1 in which said tab extends across the radially outer end of both of said end portions.
Claim 4
Dependent Claim
28 words
A lock cylinder body as in claim 2 in which said tab on said one end portion has fingers extending radially against the other of said end portions.