GB950846A - Method and tools for improving the sound absorbing qualities of wall board and the like - Google Patents
Method and tools for improving the sound absorbing qualities of wall board and the likeInfo
- Publication number
- GB950846A GB950846A GB2761660A GB2761660A GB950846A GB 950846 A GB950846 A GB 950846A GB 2761660 A GB2761660 A GB 2761660A GB 2761660 A GB2761660 A GB 2761660A GB 950846 A GB950846 A GB 950846A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tapered end
- tools
- shank portion
- shank
- improving
- 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
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/04—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by punching out
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Building Environments (AREA)
Abstract
950,846. Punches. WOOD CONVERSION CO. Aug. 9, 1960, No. 27616/60. Addition to 927,865. Heading B3W. [Also in Division B4] A punch for use in making sound-absorbing panels from cellulosic fibreboard, described in the parent Specification, comprises a tapered end portion and a shank portion. The junction of the tapered end portion 26 and the shank portion 25 has a crosssection at least as large as the greatest cross-section of the shank portion and is in the range from 0.000765 to 0.0123 square inches. The punch has a flat end 27 substantially perpendicular to the longitudinal axis, the area of which is in the range from 0.0000196 to 0.00125 square inches, the side walls of the tapered end being inclined at an angle of between 7.5 and 30 degrees to the longitudinal axis. The shank portion may be cylindrical and the end portion frusto-conical, or, the cross-section of the shank may be square, triangular, crescent, or, of irregular form, and the tapered end of corresponding form. A bank of tools and a stripper plate are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2761660A GB950846A (en) | 1960-08-09 | 1960-08-09 | Method and tools for improving the sound absorbing qualities of wall board and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2761660A GB950846A (en) | 1960-08-09 | 1960-08-09 | Method and tools for improving the sound absorbing qualities of wall board and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB950846A true GB950846A (en) | 1964-02-26 |
Family
ID=10262497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2761660A Expired GB950846A (en) | 1960-08-09 | 1960-08-09 | Method and tools for improving the sound absorbing qualities of wall board and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB950846A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58143197U (en) * | 1982-03-19 | 1983-09-27 | 東海ゴム工業株式会社 | Hole punch for rubber plate |
-
1960
- 1960-08-09 GB GB2761660A patent/GB950846A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58143197U (en) * | 1982-03-19 | 1983-09-27 | 東海ゴム工業株式会社 | Hole punch for rubber plate |
| JPH0230239Y2 (en) * | 1982-03-19 | 1990-08-14 |
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