Pattern drilling machine for securing roofing insulation

Details Pattern drilling machine for securing roofing insulation Pattern drilling machine for securing roofing insulation

1988-04-04

1990-04-17

Howell, Daniel

Cutting by use of rotating axially moving tool

Processes

Bit detachable

408 42, 408 77, 408111, 408112, 408136, 408712, B23B 4100, B23B 4700

Patent

active

049175483

ABSTRACT:
A lightweight machine for drilling a pattern of fastening holes in panels of installed roofing insulation is movably supported on rollers that rest on the panels without substantially deforming them. The machine is maneuvered by a handle, and vertical movement of the handle lowers a template carrying a gang of drills. The drills proceed through a central opening in the frame of the machine to engage the panels in the sub-roof structure on which they have been installed.

REFERENCES:
patent: 1299318 (1919-04-01), Fogleman
patent: 1533381 (1925-04-01), Burton
patent: 1927006 (1933-09-01), Guibert et al.
patent: 2825372 (1958-03-01), Talboys
patent: 4059162 (1977-11-01), Zbinder et al.
patent: 4674925 (1987-06-01), Thornton et al.
patent: 4765785 (1988-08-01), Calzone

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