Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB37911/46A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HENDRIK DE HOOP
Original Assignee
HENDRIK DE HOOP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HENDRIK DE HOOPfiledCriticalHENDRIK DE HOOP
Publication of GB621227ApublicationCriticalpatent/GB621227A/en
B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
B24D9/08—Circular back-plates for carrying flexible material
B24D9/085—Devices for mounting sheets on a backing plate
Abstract
621,227. Grinding and polishing; polishing discs. HOOP, H. DE. Dec. 24, 1946, No. 37911. Convention date, Jan. 28, 1944. [Classes 19 and 60] The face of a disc 1 is clothed with a sheet 2 of sandpaper, flannel etc.; the face of the disc has a conically bevelled portion 3 in which is provided, as e.g. by turning a groove 4 to receive the edge of the sheet; the face 5 of the marginal portion of the disc lies behind the front face of the sandpaper.
GB37911/46A1944-01-281946-12-24Improvements in or relating to abrasive polishing and like discs
ExpiredGB621227A
(en)