| DE95223C | ||||
| DE3615441A1 | 1986-12-18 | |||
| DE26198C |
CLAIM l.The tool for the processing of arc elements made of mortar and plaster (gypsum) consists of a tool bearer (1), to which is affixed by screws (3) the lever bearer (2) with an axle bearing (36) in which rotates the axle (5) to which through the groove (6) by a tension handle (37) is affixed lever (4) onto which by screws (15) and (16) are fastened handle (7) and a scrapes bearer (8) in whose notch is inserted the lower scraper (9) which is by the screw (10) through the groove (1 1) fastened to the scraper bearer (8) on one end, while on the other end passing through notch (35) on the lever (4) it is fastened through groove (11) by the screw (19) which is the ending of the auxiliary lever (14) which is over the axle (18) connected to the bearer of tne auxiliary lever (13) which is fastened on the lever (4), while the flank scraper (12) is by the screw (20) fastened to the lower scraper (9).
2. The tool according to the claim 1, characterized by, that the lower scraper (9) by moving of the screw (19), as the ending of the auxiliary lever (14), through the groove (11), as well as by adding of an auxiliary flank scraper (22), can be moved into such a position that the working surface is processed under a desired angle - inclination.
3. The tool according to the claim 1, characterized by, that by inserting the universal profile bearer (25), which carries on itself one of the desired profiles, on the lower scraper (9), the making of a desired arc border - profile is facilitated. |
A TOOL FOR FINISHING OF ARC ELEMENTS WTTH MORTAR OR
PLASTER Technical field
The invention belongs to the field of construction industry and is used for shaping of circular and arc elements which are made of different kinds of mortar and plaster on openings. The invention solves the problem how to shape regularly and precisely the circular and arc surfaces and edges on the wanted openings and cavities and simple repetition of desired dimensions. Background Art .
Arc surfaces are shaped by the use of a pattern which has been separately manufactured from different kinds of material (wood, plywood, tin, etc.), and then fixed to an opening on order to get the desired curved surface by throwing on and removing of excess material by the given pattern. A regular centering of the pattern required a skillful worker, and such a pattern was rarely used again. Disclosure of the Invention The pictures show a tool for the processing of arc-components made of mortar and plaster consisting of tool bearer 1 to which is affixed a bar bearer 2 by screws 3 which is through a shaft 5 rotating in the bearing 36 connected to the lever 4 which has a groove 6 through which a handle 7 and a scraper carrier 8 are fastened by screws 15 and 16. The lower scraper 9 is inserted into the notch 31 on the bearer 8 and notch 35 on lever 4 and by the screw 10, through the groove 11 is affixed to the bearer 8. Bearer of the auxiliary lever 13 is fastened by screws 17 to the lever 4, and through the shaft 18 it is connected to the auxiliary lever 14 which is on its other end fastened by the screw 19 to the lower scraper 9 through groove 11. Through aperture 20 to the lower scraper 9 the side scraper 12 is fastened which on itself has openings 21 to receive an auxiliary side scraper 22 (FIG. 2) and which itself has a hole 24 for a shaft and a groove 23 for fixing the angle. To the lower scraper 9 also a universal profile bearer 25 can be fastened (FIG. 3), to which through aperture 26 the desired profiles are affixed, for example 27, 28 and 29 (FIG. 5, 6 and 7). The tool functions as follows: lever 4 slides through the groove 6 over the shaft 5, and is brought into such a position that the distance between the tip 32 of the lower scraper 9 and the midpoint of the shaft 5 is equal to the desired radius line of the facing, and then fastened by the tightening handle 37. The desired processing depth of the lower scraper 9 is adjusted by the screw 10 and the side scraper 12 leaning surface 34 should slide over the previously leveled wall where the processed opening is positioned. The tool in the desired composition is fastened to the wall so that the shaft 5 lies in the center of the radius line which enables the lower scraper 9, by swaying the lever 4 to left and right, to delineate the desired compass and by means of its top surface 32 to remove the excess of previously thrown-on material (different kinds of plaster and gypsum) from the surface which is being processed, so that - in combination with side scraper 12 - it leaves behind it level and correct surfaces and edgings. The process of
throwing on - adding material to the surfaces, and removing the excess material by swinging of the tool is repeated until the surfaces and edgings become evenly padded (full).
If the surface which is being processed is not perpendicular against the surface of the vertical wall, but stands at a certain angle, then that angle - inclination of working is adjusted by the auxiliary lever 14, which is connected to the bearer of the auxiliary lever 13 through the shaft 18 on the lower side, and on the upper end is connected to the lower scraper 9 by the screw 19 through groove 11. The screw 19 is dragged through groove 11 until the lower scraper 9 forms the desired angle of processing (FIG. 2). For the processing under a certain angle it is also necessary to affix to the side scraper 12, an auxiliary side scraper 22 by adding a shaft into the opening 24, and by shifting of the groove 23 with screw 33 the auxiliary side scraper 22 is brought into the desired position.
By adding a universal profile bearer 25 (with an appropriate profile) to the lower scraper 9, the tool facilitates the making of a shapely arc border by multiple repetition of the process of throwing on and removing the material