DE278420C - - Google Patents
Info
- Publication number
- DE278420C DE278420C DENDAT278420D DE278420DA DE278420C DE 278420 C DE278420 C DE 278420C DE NDAT278420 D DENDAT278420 D DE NDAT278420D DE 278420D A DE278420D A DE 278420DA DE 278420 C DE278420 C DE 278420C
- Authority
- DE
- Germany
- Prior art keywords
- pressed
- protective cage
- rawhide
- cage according
- suspension hook
- 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.)
- Active
Links
- 230000001681 protective Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims 2
- 210000003491 Skin Anatomy 0.000 claims 1
- 239000010985 leather Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V15/00—Protecting lighting devices from damage
- F21V15/02—Cages
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Insulators (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Bei elektrischen Handlampen, die in der Nähe spannungsführender Teile (hinter Schalttafeln, in Fernsprechämtern) gebraucht werden, dürfen äußerlich keine Metallteile, ebenso auch keine metallischen Schutzkörbe verwendet werden.In the case of electric hand lamps that are close to live parts (behind control panels, in telephone exchanges), no metal parts may be used on the outside, as well no metallic protective baskets are used either.
Eine Glasglocke allein würde zwar dieser Bedingung genügen, eignet sich aber in vielen Fällen nicht wegen ihrer Zerbrechlichkeit. EinA bell jar on its own would meet this requirement, but it is suitable for many Cases not because of their fragility. A
ίο Stoff, der allen Anforderungen für derartige Handlampen genügt, bietet sich in der getrockneten oder gepreßten Rohhaut (gepreßtes Leder eignet sich weniger hierfür wegen der geringeren Steifigkeit). Diese Rohhaut besitzt nicht nur genügend Isolierfähigkeit, sondern auch eine praktisch unbegrenzte mechanische Festigkeit gegen alle vorkommenden Beanspruchungen. .ίο substance that meets all requirements for such Hand lamps are sufficient, they can be found in the dried or pressed rawhide (pressed Leather is less suitable for this because of its lower stiffness). This rawhide possesses not only sufficient insulation, but also a practically unlimited mechanical Resistance to all occurring stresses. .
Der Schutzkorb erhält zweckmäßig die in der Fig. 1 dargestellte Form. Zum Aufschrauben auf den isolierten Griff ist ein Gewindering R aus Metall mit der Rohhauthülle umpreßt. Diese ist nur an etwa 2/3 ihres Umfanges gitterartig durchbrochen, während die Rückwand der Festigkeit wegen voll stehen bleibt und inwendig mit einem Reflektor versehen werden kann.The protective cage is expediently given the shape shown in FIG. 1. For screwing onto the insulated handle, a threaded ring R made of metal is pressed around with the rawhide shell. This is perforated like a grid only at approximately 2/3 of its circumference, while the rear wall of the strength remains for full and can be internally provided with a reflector.
Statt die Querstücke S, wie abgebildet, aus dem Vollen auszustanzen, können sie auch in Form von Rohhaut oder Lederringen um die Hülle herumgelegt und festgepreßt werden.Instead of punching the cross pieces S out of the solid, as shown, they can also be placed around the casing in the form of raw hide or leather rings and pressed into place.
Für den Haken H wird zweckmäßig nach Fig. 2 ein mit Rohhaut umpreßter Bügel verwendet, oder er wird nach Fig. 3 aus Rohhaut ausgeschnitten und mit einer Öffnung für den Splint Sp versehen.For the hook H , a bracket pressed around with rawhide is expediently used according to FIG. 2, or it is cut out of rawhide according to FIG. 3 and provided with an opening for the splint Sp .
Claims (5)
Publications (1)
Publication Number | Publication Date |
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DE278420C true DE278420C (en) |
Family
ID=534425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT278420D Active DE278420C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE278420C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2789208A (en) * | 1955-08-02 | 1957-04-16 | Chester R Thatcher | Welder's light guard |
-
0
- DE DENDAT278420D patent/DE278420C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2789208A (en) * | 1955-08-02 | 1957-04-16 | Chester R Thatcher | Welder's light guard |
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