| US2873774A | 1959-02-17 | |||
| US0025014A | 1859-08-09 | |||
| US3835901A | 1974-09-17 | |||
| RU2074810C1 | 1997-03-10 | |||
| DE3939479A1 | 1991-06-06 | |||
| DE214414C |
| 1. | Method of bowls production from stone, ivory and wood by figure cutting of material, characterized in that we take an instrument in form of a hoop (5,23) and move it to material (4,28) along an arc (13), tangential to central axis of the hoop (5,23). |
| 2. | The method as claimed in Claim 1, characterized in that we take an instrument (5) in form of close (uninterrupted) hoop with cutting elements (abrasive corns, tooth) on its border (19), put a wall of the hoop (5) between rollers (6,7), placed from one side of the central axis (14) of the hoop (5), by means of the rollers (6,7) we turn the instrument around its central axis (14) and cut the material mechanically, by sawing. |
| 3. | The instrument as claimed in Claim 2, characterized in that it made in form of close (uninterrupted) hoop (5) with cutting elements (abrasive corns, tooth) on its border (19) and with a round corrugation (16) of the wall for the best keeping of the hoop (5) by the rollers (6,7). |
| 4. | Apparatus for realization of the method as claimed in Claim 2, characterized in that it includes the instrument as claimed in Claim 3, rollers (6,7) for keeping of the instrument (5), motor for turning of the rollers (7) and hanging elements (10,12) for directing of instrument (5) along the arc (13), tangential to central axis (14) of the hoop (5). |
| 5. | The apparatus as claimed in Claim 4, characterized in that it is installed with possibility of turning around a vertical shaft (12). |
| 6. | The method as claimed in Claim 1, characterized in that we take the instrument in form of open (with interval) hoop (23), heat the hoop (23) by electric current and use it for thermal cutting of material (28) (wood) by means of burning. |
| 7. | The method as claimed in Claim 6, characterized in that we burn the bowls (22) of wood (28), using simultaneously a number of the hoops (23) bigger, than one. |
| 8. | The instrument for realization of the method as claimed in Claim 6, characterized in that it made in form of open (with interval) hoop (hoops) (23), having holders (29) on its ends and contacts (30) for putting the hoop (hoops) (23) to electric circuit. |
| 9. | The instrument for realization of the method as claimed in Claim 7, characterized in that the hoops (23) are united to electric circuit successive. |
| 10. | The apparatus for realization of the method as claimed in Claim 6, characterized in that it includes the instrument as claimed in Claim 8 and hanging elements (26,12) for directing of the instrument (23) to the central axis of the hoop (hoops) (23). AMENDED CLAIMS [received by the International Bureau on 30 April 2004 (30.04. 04); original claims 110 replaced by new claims 18 (2 pages) 1. Method of bowls production from stone, ivory and wood by means of ring cutting instrument, characterized in that we install a block of material (4,28) immovably, take the ring cutting instrument in form of a hoop (5,23), hang it in vertical position (a central axis 14 of the hoop 5,23 is directed horizontal) and move the instrument (5,23) to material (4,28) along a horizontal curved line (13), tangential to the central axis (14) of the instrument (5,23). |
| 11. | 2 The method as claimed in Claim 1, characterized in that we take the instrument (5) in form of close (uninterrupted) circular hoop with cutting elements (abrasive corns, tooth) on it's border (19), put a wall of the hoop (5) between two pairs of the rollers (6,7) with horizontal central axes (14) and move the hoop (5) to material (4), circumscribing the arc (13) around external vertical shaft (12), thereby cutting the material (4) mechanically, by sawing. |
| 12. | 3 Instrument for realization of the method as claimed in Claims 1,2, characterized in that it made by rolling of comparatively thin metal. (band, sheet) in form of close (uninterrupted) circular hoop (5) with at least one ring corrugation (16) of the wall, which border (19) is provided with cutting elements (abrasive corns, tooth). |
| 13. | 4 Apparatus for realization of the method as claimed in Claims 1,2, characterized in that it includes the instrument (5) in form of close (uninterrupted) circular hoop (5) with cutting elements on it's border (19) and with ring corrugation (16) for better keeping of the instrument's wall by rollers (6 and 7), having horizontal central axes, besides a distance between axes of driving rollers (7) is stabile, but passive rollers (6) are installed with possibility of regulation of distance between it's axes according to size of instruments; also includes a motor for turning of rollers (7), that is placed inside a body (8); a vertical shaft (12) and hanging elements (10, 11) for regulation of radius of horizontal arc (13), which may be circumscribed by the instrument (5). |
| 14. | The method as claimed in Claim 1, characterized in that we take the instrument in form of open (with interval) hoop (23), heat the hoop (23) by electric current and use it for thermal cutting of material (28) (wood) by means of burning. |
| 15. | Instrument for realization of the method as claimed in Claims 1,5, characterized in that it made in form of open (with interval) hoop (23), having holders (29) on it's ends and contacts (30) for putting the hoop (23) to electric circuit. |
| 16. | The method as claimed in Claims 1,5, characterized in that we burn bowls (22) from wood (28), using simultaneously a number of the hoops (23), bigger, than one. |
| 17. | The instrument as claimed in Claims 1,5, 7, characterized in that, the instrument (fig. 7) has the number of the hoops (23), bigger, than one, moreover the hoops (23) are united to electric circuit successive. |
Known method of the bowls production from stone, ivory and wood by means of figure cutting was described by the same author in his Patent RU 2074810, inventor Alexander Turin, priority from 21.01. 1992, published 10. 03.1997 in Bul. 7.
According to that patent the bowls in form of spherical segment are produced by means of a saw in form of spherical segment.
The aim of present invention is to make the bowls in form of thor segment (a vertical projection of the bowls is elliptical).
This is achieved thanks to the method, that we take an instrument in form of hoop and move it to material along an arc, tangential to central axis of the hoop.
For cutting of stone and ivory the instrument is made in form of close (uninterrupted) hoop with cutting elements (abrasive corns, tooth) on its borders.
Wood bowls are made of thermal cutting (burning). The instrument has form of open (with interval) hoop and is heated by an electric current.
Using two three or several instruments with different sizes, we may burn a packet of wood bowls simultaneously.
Let us see the examples of realization, which are presented on the following drawings: Figures 1 and 2 show two projections of an apparatus for sawing of the stone bowls.
Figure 3 shows a keeping of the instrument.
Figure 4 shows a provisional fixation of the stone bowl before it separation.
Figures 5 and 6 show two projections of an apparatus for burning of the wooden bowls.
Figure 7 shows an instrument for simultaneous burning of three wooden bowls.
On Figures 1and 2 we see the stone bowl 1 having thor-form surfaces: internal one 3 that was cut earlier and external surface 2, presented in process of cutting from block of stone 4 by means of instrument 5 in form of close (uninterrupted) hoop.
A wall of the instrument 5 is pressed by means of passive rollers 6 to drive rollers 7, which are turned by electric motor, installed inside of a body 8.
On Figure 2 we see that the rollers 6 and 7 keep the instrument asymmetrically, on one side from a central axis 14 of the hoop 5.
The body 8 is installed on parallel rods 10.
A screw 12 regulates a distance between the instrument 5 and a shaft 12.
The shaft 12 is installed vertical, therefore we can begin the cutting with minimal strength and speed.
We can see that the instrument 5 moves along the arc 13, tangential to central axis 14 of the hoop 5, making the cut 15 with surfaces of thor.
Figure 3 shows in section the wall of the instrument 5 with corrugation 16, which ensures a stability axis position of the instrument 5 on relation to rollers 6 and 7.
We see a border 19 with abrasive corns for cutting of stone.
Figure 4 shows a plaster plumb 21 with fiber, winded around a wood a wedge 20, which prevent a break off the stone before than the cut 15 will be finished. When we are ready to accept the cut off bowl 1, we hit on the wedge 20 by a wood hammer, breaking off the plumb 21.
Figures 5 and 6 show the wooden bowl 22 in a process of the thermal cut (burning) by means of instrument 23 in form of open (with interval) hoop 24, heated by the electric current.
A block of electric isolation 25 separates the instrument 23,29 and a hang 26, which is installed on vertical shaft 12.
Holes 27 regulate a distance between the shaft 12 and a block of wood 28.
The ends of the open hoop 23 are fitted in holders 29 with contacts 30 for putting the instrument 23 to electric circuit.
Figure 6 shows that the hoop 23 may be turned around the axis of the shaft 12 along the arc 13, which is tangential to central axis 14 of the hoop 23 (the arc 13 and the axis 14 are placed in one flatness).
We see also a scotch tape 31, which keeps the bowl 22 in moment before separation and prevent the break off a last part of wood between the bowl 22 and the block of the wood 28.
Figure 7 shows the instrument with four open hoops 23.
The ends of the hoops 23 are fitted in the holders 29, united to the electric circuit successive.
By means of that instrument it is possible to burn three wooden bowls simultaneously.