For drilling of round bores twist drills with a roof-shaped point or with a centre point are applied. ❋ Johannes Schollbach (1993)
Twist drills with a roof-shaped point and a short robust shank are mainly applied for dowel bit bores in solid wood or cross grain wood. ❋ Frank Wenghfer (1993)
File lips from below, do not interrupt the connection between the lips and the infeed thread, hone carefully. sharpening of twist drills with roof-shaped point ❋ Dieter Zemmrich (1993)
Application with square shank for breast drill with parallel shank for drill chuck and machine with entering tap for cross-piece drilling with chip groove for deep drilling with roof-shaped point for non-fibrous materials and end-grained wood with centre point for exact advance with feed thread for manual work without feed thread for machine work with short die head for flat drilling ❋ Dieter Zemmrich (1993)
Applications twist drill with roof-shaped point diameter thread length ❋ Dieter Zemmrich (1993)
He took a folded piece of tin from his pack and with a few magic passes turned it into a roof-shaped structure resting on its side on two short steel legs. ❋ Dama Margaret Smith (1932)
I can place over the ice a roof-shaped cover made of two inclined slabs of thick plate glass. ❋ John Joly (1895)
The hand set of burnishers has four which are pear-shaped and vary in size, and one which is rather small and roof-shaped. ❋ Henry Lovejoy Ambler (1883)
And from there, by rare good fortune, we do see it – a huge, roof-shaped mass, sloping, and smooth, and snowy white against a leaden sky. ❋ Unknown (1873)
We turned aside early in our march to avoid being wetted by rains, and took shelter in some old Babisa sheds; these, when the party is a slaving one, are built so as to form a circle, with but one opening: a ridge pole, or rather a succession of ridge poles, form one long shed all round, with no partitions in the roof-shaped hut. ❋ Ed (1874)
From the stream being roof-shaped, any drift which its left portion took up would have to go up hill to get to the northward. ❋ William Henry Giles Kingston (1847)
It is roof-shaped -- that is, higher in the centre than on either side. ❋ William Henry Giles Kingston (1847)
Babisa sheds; these, when the party is a slaving one, are built so as to form a circle, with but one opening: a ridge pole, or rather a succession of ridge poles, form one long shed all round, with no partitions in the roof-shaped hut. ❋ David Livingstone (1843)
