Originally Posted By: PA24
Were the file cut ribs made for anti-glare or for heat distortion rising from hot barrels.....as a predecessor of the raised vent rib...?

We know that Italian, American, German, Spainish and French makers commonly file cut (and drill turned) their ribs, whether swamped or flat........So why didn't the English...?


By the 1890's most companies owned matting machines. You feed the stock in and a matted rib comes out.

I can only surmise that some British makers were saving money by cutting out a step.

Pete

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