Method and apparatus for removing set mortar from recovered building bricks
US4004569A · kind A · utility
Inventor
Key dates
| Filing date | May 19, 1975 |
| Grant date | Jan 25, 1977 |
| Priority date | — |
| Expiry date | May 19, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28D1/001
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of, and apparatus for, applying to the original set mortar adherent to the faces of a used brick components of force so directed as to remove the mortar from the faces. The forces are applied to the mortar on opposite side and edge faces of the brick concurrently so as to relieve the brick from bending stresses. These forces have components directed inwardly of the brick and also in directions along and across the faces of the brick for wedging, shearing, cracking, and abrading the mortar off the faces. The forces are applied as the brick is moved along a predetermined path, and are progressively increased as the brick advances, except at those surface areas at which the mortar to which the forces are applied has been removed or reduced in thickness. The freed mortar passes immediately from the site of application of the removal forces. The original faces of the bricks are not marred or scarred noticeably and the bricks are not chipped or broken, by the applied forces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.