GB529217A - Improvements in pressure applying devices for small portable drilling machines - Google Patents
Improvements in pressure applying devices for small portable drilling machinesInfo
- Publication number
- GB529217A GB529217A GB1552239A GB1552239A GB529217A GB 529217 A GB529217 A GB 529217A GB 1552239 A GB1552239 A GB 1552239A GB 1552239 A GB1552239 A GB 1552239A GB 529217 A GB529217 A GB 529217A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- lever
- rack
- link
- lower limb
- 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
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
- B25H1/0057—Devices for securing hand tools to the work
Abstract
529,217. Drilling-machines. BELBIN, G. P., and BELBIN, G. May 25, 1939, No. 15522. [Class 83 (iii)] In means for feeding a portable drilling machine g, an arm b on the machine is attached to an L-shaped frame a which carries a workengaging pad f<SP>1</SP> on a rack f slidable in the lower limb of the frame in line with the drill spindle. A further bracket i assists in securing the machine to the frame. A hand lever c is pivoted to the frame and is connected by a link d to a lever e pivoted in the lower limb of the frame and provided with a toothed segment engaging the rack f, so that the operator may exert a squeezing movement between the arm b and lever c to feed the drill relatively to the work. The levers are arranged with a mechanical advantage as shown to increase the feeding pressure, and if this does not produce sufficient movement of the rack f the link d may be connected to the lever e by a pawl and ratchet to allow a number of strokes to be given to the lever c. The frame a is formed in two parts and the link d is made telescopic to enable the lower limb to be adjusted relatively to the drilling machine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1552239A GB529217A (en) | 1939-05-25 | 1939-05-25 | Improvements in pressure applying devices for small portable drilling machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1552239A GB529217A (en) | 1939-05-25 | 1939-05-25 | Improvements in pressure applying devices for small portable drilling machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB529217A true GB529217A (en) | 1940-11-15 |
Family
ID=10060608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1552239A Expired GB529217A (en) | 1939-05-25 | 1939-05-25 | Improvements in pressure applying devices for small portable drilling machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB529217A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0450135A1 (en) * | 1990-04-05 | 1991-10-09 | MV MARKETING + VERTRIEBS GMBH WIELÄNDER & SCHILL. | Hand-drill for drilling-out of spot-welds |
US5314271A (en) * | 1992-12-03 | 1994-05-24 | Christiano Nicholas W | Portable drill guide |
-
1939
- 1939-05-25 GB GB1552239A patent/GB529217A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0450135A1 (en) * | 1990-04-05 | 1991-10-09 | MV MARKETING + VERTRIEBS GMBH WIELÄNDER & SCHILL. | Hand-drill for drilling-out of spot-welds |
US5314271A (en) * | 1992-12-03 | 1994-05-24 | Christiano Nicholas W | Portable drill guide |
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