Grindstone to Gueridon

Grindstone to Ground detector

operate together by means of an abrasive. This. may be accomplised either by a hand or machine process.
Grindstone. A revolving stone against which tools and materials are abraded by grinding. Grindstones are natural sandstone.
Grip. (M ech.) A device for grasping or holding.
Gripe. (Mach.) A name occasionally applied to "machine clamp."
Grippers. (Print.) Small metal fingers that press against the sheet on a press, and hold it firmly in position while an impression is being taken.
Grisaille. (Furn.) A style of painting done in shades of gray.
Grit. The parcticles which are used to make up grinding wheels. The size of these particles is referred to by a grit number.
Groin. (Arch.) The line of intersection of two vaults where they cross each other.
Groined vaulting. (Arch.) The system of covering a building or passage­ways with stone vaults which cross and intersect.
Grommet. A metallic eyelet, used prin­cipally in awnings and flags. Also a ring of candle wicking used as a water tight gasket or washer around bolts and studs. (Naut.) A ring or loop or rope.
Groove. (Arch., Bookbndg.. Patmkg.) A depressed or sunken channel, usually small; so designated, whether some other part does or does not fit into it.
Grooving. (Mach.) The cutting of a groove or channel. (Sheet-Met. Wk.) The finishing or grooving of a lock joint with a grooving tool.
Grooving machine. (Sheet-Met. Wk.) A machine used in place of a hand grooving tool for setting lock seams.
Grooving stake. (Sheet-Met. Wk.) A bar in which are milled four grooves of different sizes. It is used for closing lock seams with a mal­let, without the use of a hand­grooving tool. The bar is rigidly held in a type of vise called a "holder."
Gross. Twelve dozen; 144. Grotesque. A fantastic style of ornament
Ground (Arch.) Nailing strip set in or attached to a brick or stone wall. (Auto. Elec.) (1) A direct connec­tion to frame, generator, -motor, lights, or body by means of which the circuit is completed. (2) A leak­age of current into the ground with­out performing the work intended. (Elec.) Point of contact between electric circuit and earth by means of water and gas pipes, etc.
Ground circuit. (Elec.) A circuit which makes use of the ground for one wire of a two- or three-wire circuit. ..
Ground clamp. (Elec.) A clamp used for attaching a wire or other con­ductor to a pipe to make a good electrical connection.
Ground detector. (Elec.) A lamp mounted on a switchboard, used to indicate a ground when it occurs on a circuit wire.Groubdo circuit to Gueridon
Groundoo circuit. (Elee.) The ground­ing of a circuit through faulty insu­lation, in an electrical connection between a wire, carrying current, and the ground.
Ground floor. (Arch.' and Masonry) The first floor above the ground level; . usually the main floor.
Ground gear. (Aero.) The gear or equipment necessary for the land­ing and handling of an airship on the ground.
Grounding. (Elec.) Intentional connec­tion made between a circuit wire and the ground, as in the neutral wire of a three-wire system, or the bonding together electrically of electrical conduits and water pipes.
Grounding conductor. (Elec.) A con­ductor used to connect the equip­ment or wiring system with a grounded electrode or electrodes.
Grounding out. (Film.) The removing of the background of a design in carved work.
Groundjoint. (Furn.)A fitting of parts by grinding them together with abra­sive paste, or by loose abrasive with oil or water, e.g., the grinding of automobile valves.
Ground joist. (Arch.) A joist that is blocked up from the ground.
Ground loop. (Aero.) An uncontroIla­ble, violent turn of an airplane while taxying, or during the landing or take-off run.
Ground return. (Auto. Elec.) The chas­sis and those parts of the auto-mo­bile to which all electrical devices are commonly attached to provide a complete circuit.

Ground speed. (Mro.) The velocity of an aircraft, relative to the earth, measured horizontally.
Ground-speed meter. (Aero.) An in­strument for measuring the speed of an aircraft with relation to the ground.
Ground strap. (Auto.) A stranded cop­per cable or woven copper band used to connect the battery to the frame of the .car, or the engine to the frame when the engine is mounted on rubber.
Ground water. (Plumb.) Water that is standing in or passing through the ground.
Ground wire. (Elee.) A wire con­nected between the ground and any piece of electrical apparatus. (See Ground.)
Groundwood. (Papermkg.) Also called mechanical wood, it is made by grinding logs. Grout. A fluid cement mixture for filling crevices.
Growler. (£lee.) A smaIl transformer used for detecting shorts, opens, or grounds in armatures.
Guard. (Mach.) Any protective device attached to or used in conn­ection with a machine to reduce liability of injury to the operator.
Gudgeon pin. (Auto.) Same as wrist pin or piston pin.
Gudgeons. (Print.) Metal wheels keyed to the ends of the roller. stock on job presses. They roll on the tracks and cause the roners to rotate.
Gueridon. (Fum.) A stand for lamp or vase with flowers, adapted from