GB826889A - Archimedean-screw hand brace for drilling and the like - Google Patents
Archimedean-screw hand brace for drilling and the likeInfo
- Publication number
- GB826889A GB826889A GB366/58A GB36658A GB826889A GB 826889 A GB826889 A GB 826889A GB 366/58 A GB366/58 A GB 366/58A GB 36658 A GB36658 A GB 36658A GB 826889 A GB826889 A GB 826889A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- screw
- balls
- flutes
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
826,889. Hand-drills. ISSARTEL, R. A. M. Jan. 3, 1958 [Jan. 5, 1957], No. 366/58. Class 83 (3). [Also in Groups XXIII and XXIV] An archimedean hand-drill comprises an archimedean screw 2 engaged by a ball 21 carried by a ring 15, which may be clutched to a collar 9 on the driving handle 5, a return spring 7 acting on the end of the screw which is guided in the handle, and a spring 22 urging the ring into driving engagement with the collar. The other polygonal end 23 of the screw engages the socket end of a drill, wrench or screwdriver (not shown). A knurled sleeve 24 in which the screw rotates in balls 25, may be gripped to facilitate guidance of the tool. A pair of diametrically opposed balls 21 in passages 17 in the ring 15 are held in the flutes of the screw by an outer ring 16 within a casing 14 secured to the collar 9 by a screw 13. Forward movements of the handle 5 engage at least two pins 19 on the ring 15 in two of a circular row of holes 12 in the collar, thus clutching the ring to the handle and rotating the screw. During return movements of the handle, effected by the spring 7, the pins 19 move out of the pockets 12, against the action of spring 22, freeing the ring for rotation on the stationary screw. In a modification, the screw 26, Fig. 6, is double-handed, one or, as illustrated, a pair of flutes of each hand being provided. Two pairs of flute-engaging balls 38a, 38b, Fig. 18, are provided, operative in opposite pairs, the inoperative pair 38b entering escape pockets 46 in the outer ring 28, which may be rotated on the inner ring 27 to change the setting of the balls. An extension 40 of the ring facilitates this rotation, and at least one ball 44 in a passage 43 in the outer ring is pressed inwardly by a spring 45 to engage index pockets 39, Fig. 17 (not shown), in the surface of the inner ring. A pair of guide-balls 42, Fig. 16, in passages in the ring 27, remain in engagement with the flutes and, located at the junction of the crossing-flutes during rotation of the outer ring in an operation to reverse the direction of rotation of the screw, prevent rotation of the inner ring during this operation, and may proceed along flutes of either hand, as decided by the operative balls 38a or 38b. In Fig. 6, the balls 42, which are phased at 45 degrees from the balls 38a, 38b, are on the level of the section 16-16.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR826889X | 1957-01-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB826889A true GB826889A (en) | 1960-01-27 |
Family
ID=9283082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB366/58A Expired GB826889A (en) | 1957-01-05 | 1958-01-03 | Archimedean-screw hand brace for drilling and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB826889A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1228890B (en) * | 1963-01-23 | 1966-11-17 | Helga Stoeckicht Geb Sellschop | Device for pushing the teeth of toothed wheels by means of a cutting wheel |
JPS51149493U (en) * | 1975-05-26 | 1976-11-30 | ||
JPS52785U (en) * | 1975-06-23 | 1977-01-06 | ||
JPS5519174U (en) * | 1978-07-24 | 1980-02-06 |
-
1958
- 1958-01-03 GB GB366/58A patent/GB826889A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1228890B (en) * | 1963-01-23 | 1966-11-17 | Helga Stoeckicht Geb Sellschop | Device for pushing the teeth of toothed wheels by means of a cutting wheel |
JPS51149493U (en) * | 1975-05-26 | 1976-11-30 | ||
JPS52785U (en) * | 1975-06-23 | 1977-01-06 | ||
JPS5519174U (en) * | 1978-07-24 | 1980-02-06 |
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