ical guide- trouble of measuring, using dividers or maintaining a ways, are secured to the side rails of the window frame, knife sharp enough to cut rubber. The only require- and in these guideways slide bearing blocks in which ment is to strike light with the hammer, so as not to are journaled… … rator shown in the accompanying illustration, the im- provement making it possible to dispense with a great these blocks, in connection with the shaft, form a sup- ideal of the tankage room heretofore required, and sav- porting frame in which is journaled the shade roller. ing expense and labor for…
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