Grooves

Examples

• The rifle grooves, however, were first made spiral or screwed by Koster, of Birmingham, about 1620, while straight grooves are said to have been in use as far back as 1498. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• The feature of importance in the cannon which contributed most to its efficiency was the rifling of the bore with spiral grooves. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• A Swiss machine for this purpose consists of two disks carrying diamonds in their peripheries, which, being put in rapid revolution, cut parallel grooves in the face of the stone. William Henry Doolittle. Inventions in the Century.
• In Berlin there is a rifled cannon of 1664 with thirteen grooves. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• In this there are no steps, it being composed of hardwood cleats moving in longitudinal ridges and grooves, there being a handrail on either side moving at the same speed. Various. The Wonder Book of Knowledge.
• One cylinder had a number of small circular saws that were fitted into grooves cut into the cylinder. Rupert S. Holland. Historic Inventions.
• Muskets with straight grooves are said to have been used in the fifteenth century. William Henry Doolittle. Inventions in the Century.
• They are then forced along thirty grooves in the steel clamps, which crimp the paper, and on through the crimp. Various. The Wonder Book of Knowledge.
• The record plate is then subjected to a particularly constituted acid bath, which, entering the groove or grooves formed by the stylus, cuts or etches the same into the plate. William Henry Doolittle. Inventions in the Century.
• The recording stylus is shaped like a little gouge to cut the little grooves in the wax, while the corresponding stylus of the reproducer has a ball-shaped end to travel in the groove. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• These are carved pieces of metal in the lock which fit into clefts or grooves in the key and prevent the lock from being opened except by its own proper key. William Henry Doolittle. Inventions in the Century.
• Machines have been invented to make such grooves. William Henry Doolittle. Inventions in the Century.
• We had no means of boring out the field magnets, and we cut grooves in them. Frank Lewis Dyer. Edison, His Life and Inventions.
• Instead of using a disk I designed a little machine using a cylinder provided with grooves around the surface. Frank Lewis Dyer. Edison, His Life and Inventions.
• When the gun is fired, the button is forced into the cone, and expands the lead, which thus fills up the grooves and gives a spiral direction to the bullet. Frederick C. Bakewell. Great Facts.
• The grooves in the wax, although giving forth mechanical movement that is translated into sound, are very minute, being only 6/10,000 of an inch deep. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• The hammer-block, _a_, weighing four tons, is guided in its ascent and fall by grooves in two massive uprights, which hold the whole together. Frederick C. Bakewell. Great Facts.

Typed by Deirdre