EP 0016524 A3 19801029 - IMPROVEMENTS IN OR RELATING TO LENS EDGE GRINDING MACHINES
Title (en)
IMPROVEMENTS IN OR RELATING TO LENS EDGE GRINDING MACHINES
Publication
Application
Priority
GB 7905308 A 19790215
Abstract (en)
[origin: GB2041800A] In a multi-wheel lens edge grinding machine having a frame 16 pivotally mounted about a horizontal axis 15 atop a base 11 supporting a plurality of grinding wheels 24, 25, 26 which present their upper regions through an opening 12a in an upper surface 12 of the base, co-axially aligned lens supports 17, 18 in the frame, the axis of the shaft driving the grinding wheels, the pivotal axis 15 of the frame, and the axis of the lens support being parallel, and the frame being displaceable parallel to its pivotal axis, there is a difficulty in providing positive drive to displace the frame between the different grinding positions whilst allowing the frame to "float" during the grinding operation. This difficulty is resolved by driving the frame via a cam plate 30 engaged by an element 44 of the frame and which plate affords positive transverse engagement with the frame whilst the frame is elevated and a less restricting engagement with the frame when the frame is lowered to a grinding position. <IMAGE>
IPC 1-7
IPC 8 full level
B24B 9/14 (2006.01)
CPC (source: EP)
B24B 9/14 (2013.01)
Citation (search report)
- US 3332172 A 19670725 - ALBERT STERN
- GB 1369912 A 19741009 - RODWAY OPTICAL IND LTD
- US 4176498 A 19791204 - LORETO WILFREDO P [US], et al
- DE 1956327 A1 19710812 - KRAUS FELIX GUNTER
- US 3513598 A 19700526 - ASSELIN ROBERT RAYMOND MAURICE, et al
- GB 1420502 A 19760107 - RAPHAELS LTD
- GB 1516936 A 19780705 - RAPHAELS LTD
Designated contracting state (EPC)
AT BE CH DE FR IT LU NL SE
DOCDB simple family (publication)
GB 2041800 A 19800917; EP 0016524 A2 19801001; EP 0016524 A3 19801029; JP S55150958 A 19801125
DOCDB simple family (application)
GB 7905308 A 19790215; EP 80300382 A 19800211; JP 1768480 A 19800215