Accession Number : ADD003981

Title :   Drilling Machine.

Descriptive Note : Patent,


Personal Author(s) : Nakano,Gregory ; Orillo,Stephen , Jr ; Uyetake,Tadao ; Higa,Teikichi

Report Date : 08 Mar 1977

Pagination or Media Count : 7

Abstract : Properly aligned threaded or smooth bores are machined in a pipe boss flange without requiring supplementary staging or makeshift rigs. An expandable holding sleeve is inserted in the throat of the pipe and a mounting unit is brought to rest on the outer surface of the pipe boss flange. A holding sleeve is expanded to engage the pipe and a bracket grips a projection from the mounting unit at a predetermined angular rotation while an extension of the bracket ensures a perpendicular orientation. A vertical feed mechanism mounted on the bracket directs a motor driven drill assembly through holes located in the mounting plate. After the holes and threads are machined in the pipe boss flange, the expandable sleeve is loosened and the unit is removed at a minimal time and effort expenditure. (Author)

Descriptors :   *Patents, *Drilling machines, *Pipes, *Flanges, Drilling, Alignment, Positioning devices(Machinery), Jigs

Subject Categories : Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE