These photocells control the reading photocells so that changes in ambient light levels will not cause errors in reading the projected encoded intelligence impressed into the bottle bottom.The identification numbers will normally be two digit numbers (which, of course, includes 0-9).To this end, the identification indicia are in two groups, the first group of three being the tens and the second group of three being the units.
amber dating three men - Dating owens illinois glass bottles
More particularly, this invention relates to the identification of the mold of origin of glass bottles.
Each of a plurality of molds is provided with a unique identification indicia.
The reading device has photocells which are responsive to the dark spots.
The rotating dove prism causes the image of the bottom to be rotated on the plane of the reading device, thus bringing the dark spots past the fixed photocells.
The product of the mold, a glass bottle in the preferred embodiment, will have the coded indicia im pressed in its bottom area in the form of small integrally molded protuberances.
The bottles are conveyed to an inspection station where the mold indicia are read, one at a time, for each bottle.
10 Claims, 8 Drawing Figures Patented July 10, 1973 4 Sheets-Sheet 2 Patented bcvv July 10, 1973 3,745,314 4 Sheets-Sheet 5 COUNTER SHIFT REGISTER UNITS TENS DECODER 8 READ-OUT INVENTORS Zf AMZ, Mary/4 ATT Y3.
Patented July 10, 1973 I I 3,745,314 4 Sheets-Sheet 4 CONTAINER I CAVITY INFORMATION LETTERl Qi y F V 9/ 9f 9 V7 0P1) r-" f[ f A W F I B "/W H HH/ 70 n 95 CAVITY IDENTIFICATION BACKGROUND o F THE INVENTION It is well known in the bottle making art that many defects are cavity oriented.
8 is a time scale drawing of the wave forms of signals appearing at various points in the circuit of FIG.
This invention relates to a method of and apparatus for determining which of a plurality of molds produced a parituclar object.
2 is a sectional view, on an enlargedscale, taken at line 22 of FIG. 3 is an exploded view of the optical system of FIG. 4 is a bottom view of a container showing the identifying indicia; FIG.