GB190504951A - Improvements in Machines for Punching Roofing and like Slates. - Google Patents
Improvements in Machines for Punching Roofing and like Slates.Info
- Publication number
- GB190504951A GB190504951A GB190504951DA GB190504951A GB 190504951 A GB190504951 A GB 190504951A GB 190504951D A GB190504951D A GB 190504951DA GB 190504951 A GB190504951 A GB 190504951A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spindle
- slates
- punching
- pin
- slate
- 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
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Punching Or Piercing (AREA)
Abstract
4951. Preston, E. March 9. Punching slates.-A machine for punching and countersinking holes in roofing-slates has a plain punch carrying a spindle b working in a tubular head a and having a projecting pin b<2> engaging with a helical slot a<2> in the head. When a slate d to be punched is placed on the die c, and a handle b<1> turned to lower the spindle, the punch e pierces the slate, while the edge of the die c effects the chipping of the slate in a circle, concentric with the punched hole, to form a countersink as shown in Fig. 3. An ordinary adjustable and removable stop f may be provided. To allow detachment of the spindle b, the hole in the tubular head has a vertical groove a' which terminates at the top of the inclined slot a'. The groove a<1> may be dispensed with and the head may be a continuous tube, in which case a spring pin b<2> is used, bevelled on one side, so that, when the handle b<1> is turned and the pin b<2> raised to the top of the inclined slot, the end of the slot acts on the bevelled side of the pin and forces it inwards. The spindle can then be removed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB190504951T | 1905-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB190504951A true GB190504951A (en) | 1905-09-07 |
Family
ID=32194497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB190504951D Expired GB190504951A (en) | 1905-03-09 | 1905-03-09 | Improvements in Machines for Punching Roofing and like Slates. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB190504951A (en) |
-
1905
- 1905-03-09 GB GB190504951D patent/GB190504951A/en not_active Expired
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