THE BUTTON-DOWN MACHINE
THE LINHART MACHINE IS DESCRIBED FOR PLACING CERAMIC MARKERS ON HIGHWAY PAVEMENTS. TRAFFIC LANE BUTTONS HAVE PREVIOUSLY BEEN PLACED BY HAND, A SLOW, MESSY BUSINESS AT BEST. WHEN THE MACHINE IS OPERATING PROPERLY AT FULL SPEED, IT CAN PUT DOWN MARKERS AT ONE MILE AN HOUR. THE EPOXY, MIXED IN A BLENDER-LIKE HOUSING, IS METERED ONTO A CERAMIC BUTTON THAT AUTOMATICALLY ROTATES ONCE, INSURING SOLID COVERAGE OF EPOXY. AN INSPECTOR RIDING ON THE MACHINE CHECKS FOR EVEN DISTRIBUTION, THEN PLACES BUTTON IN A TRAY OVER THE CONVEYER BELT. COATED BUTTONS ARE PICKED UP BY A BUCKET ON THE CONVEYER BELT AND PLACED ON PAVEMENT. AS THE BUTTON COMES IN CONTACT WITH THE PAVEMENT, A ROLLER PRESSES THE BUTTON INTO THE EPOXY SO THAT A UNIFORM BEADING IS OBTAINED AROUND THE EDGE. THERE ARE SEVERAL CRITICAL FACTORS IN SUBMITTING BUTTONS TO CONCRETE EPOXY: MIXING IS CRITICAL AND SO ARE THE EXACT PROPORTIONS, AND THE EPOXY MUST HAVE THE CONSISTENCY OF TOOTHPASTE (AT LEAST ENOUGH CONSISTENCY TO SUPPORT THE BUTTON). A SIX-MILE SECTION OF FREEWAY IN TEXAS WAS MARKED WITH THE BUTTON MACHINE SUCCESSFULLY.
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Supplemental Notes:
- Vol 14, No 12, PP 18-19, 6 PHOT
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Authors:
- Lively, F
- Publication Date: 1967-12
Media Info
Subject/Index Terms
- TRT Terms: Ceramic materials; Coatings; Consistency; Epoxides; Equipment; Mix design; Pavements; Road markings
- Old TRIS Terms: Buttons; Epoxy; Highway pavement; Traffic marking; Traffic marking equipment
- Subject Areas: Highways; Pavements; Vehicles and Equipment;
Filing Info
- Accession Number: 00219287
- Record Type: Publication
- Files: TRIS
- Created Date: May 24 1994 12:00AM