GB431539A - Improvements relating to electric hand boring machines - Google Patents
Improvements relating to electric hand boring machinesInfo
- Publication number
- GB431539A GB431539A GB23054/34A GB2305434A GB431539A GB 431539 A GB431539 A GB 431539A GB 23054/34 A GB23054/34 A GB 23054/34A GB 2305434 A GB2305434 A GB 2305434A GB 431539 A GB431539 A GB 431539A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- motor
- spindle
- drilling
- handles
- 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
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/001—Housing of the drill, e.g. handgrip
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
431,539. Drilling-machines. SIEMENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Aug. 9, 1934, No. 23054. Convention date, July 27. [Class 83 (iii)] In a portable electrically-driven drilling- machine, particularly for use in drilling coal and rock, at least one of the laterally projecting handles 3 carries a switch-operating lever 4 which swings in a plane parallel to the drill axis. A cooling fan 10 is mounted on the motor spindle within a protecting casing 9, the bearing 11 for the spindle being external to the motor casing 12 so that it may be renewed on removal of the casing 9 only. The current of air from the fan sweeps over the exterior of the motor casing 12 and also over the handles 3. The drill spindle 8<b> is rotated through a single reduction gear 6 and has its outer ball bearing located within a steel sleeve 7 pressed into the gear casing, the motor pinion 6<a> being keyed to a short shaft 8 which is coupled to the motor shaft 8<a> by driving pins, (not shown), and forms an extension thereof.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE431539X | 1934-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB431539A true GB431539A (en) | 1935-07-10 |
Family
ID=6487596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23054/34A Expired GB431539A (en) | 1934-07-27 | 1934-08-09 | Improvements relating to electric hand boring machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB431539A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1010928B (en) * | 1952-12-06 | 1957-06-27 | Siemens Ag | Electric hand drill for making drill holes in minerals or other hand-held tools |
-
1934
- 1934-08-09 GB GB23054/34A patent/GB431539A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1010928B (en) * | 1952-12-06 | 1957-06-27 | Siemens Ag | Electric hand drill for making drill holes in minerals or other hand-held tools |
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