US517591A - Insulating-tube - Google Patents
Insulating-tube Download PDFInfo
- Publication number
- US517591A US517591A US517591DA US517591A US 517591 A US517591 A US 517591A US 517591D A US517591D A US 517591DA US 517591 A US517591 A US 517591A
- Authority
- US
- United States
- Prior art keywords
- tube
- insulating
- hole
- timber
- ridges
- 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 - Lifetime
Links
- 238000009413 insulation Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 241000217377 Amblema plicata Species 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
Definitions
- MINER ROBINSON OF NEWTON, MASSACHUSETTS.
- My invention consists of animproved insulating tube for leading electric wires through timbers or other material, my object being to so construct the tube that it is rigidly held in any position within the hole in the timber previously made for it, and that it is always concentric with the hole, an air space being interposed between the outer surface of the tube and the inner surface of the hole for the purpose of more complete insulation.
- the tube is provided with narrow ridges arranged longitudinally in the manner hereinafter described.
- FIG. 1 shows in perspective the tube itself
- Fig. 2 is a sectional view showing the tube in place within the timber.
- I make my improved tube preferably of glass or porcelain, or other fire-proof non-absorbing insulating material.
- A is the body of the tube or the portion intended to pass through or rest within the hole I) in the timber B,and A is the enlarged head of the tube.
- the portion A of the tube is provided with three or more ridges a presenting a narrow edge along the top and passing continuously lengthwise of the tube from the head to a point at or near the outer end thereof.
- a hole is bored in the timber B of a diameter slightly less than that of a circle inclosing the ridges a, so that it is necessary to use some force in driving the tube into the hole.
- the tube may be either driven clear in so that the enlarged head rests against one surface of the timber, or only partially so that acousiderable portion of the tube at the head end projects beyond the timber, which latter position is desirable forthe purpose of turning Saria1No.495.9ti3. (No model.)
- the tube is held very firmly in the wood against any possibility of being turned around or changed in position, or easily withdrawn.
- Very high insulation resistance is secured by reason of the fact that the tube is in contact with the wood along the three ridges (to, a only, there being an air space between the main portion of the tube and the inner surface of the hole.
- This construction acts not only to greatly increase the insulation by reason of the small portion of the tube in contact with the wood, but also insures a quick drying out of the tube and hole in case of wetting.
- An insulating tube A provided with longitudinal ridgesathroughoutthe entire length of the body of the tube substantially as and for the purposes described.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Insulators (AREA)
- Insulating Bodies (AREA)
Description
IN V BE. v
Patented Apr. 3,1894.
M. R 'INSU' (No Model) Y UNTTED STATES PATENT OFFICE.
MINER ROBINSON, OF NEWTON, MASSACHUSETTS.
INSULATING-TUBE.
SPECIFICATION forming part of Letters Patent No.517,591, dated April 3, 1894.
Application filed January 6, 1894.
To an whom it may concern.-
Be it known that I, MINER ROBINSON, of Newton, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Insulating-Tubes, of which the following, taken in connection with the accompanying drawings, isaspecification.
My invention consists of animproved insulating tube for leading electric wires through timbers or other material, my object being to so construct the tube that it is rigidly held in any position within the hole in the timber previously made for it, and that it is always concentric with the hole, an air space being interposed between the outer surface of the tube and the inner surface of the hole for the purpose of more complete insulation. To this end, the tube is provided with narrow ridges arranged longitudinally in the manner hereinafter described.
Referring to the accompanying drawings Figure 1 shows in perspective the tube itself, and Fig. 2 is a sectional view showing the tube in place within the timber.
I make my improved tube preferably of glass or porcelain, or other fire-proof non-absorbing insulating material.
A, is the body of the tube or the portion intended to pass through or rest within the hole I) in the timber B,and A is the enlarged head of the tube.
The portion A of the tube is provided with three or more ridges a presenting a narrow edge along the top and passing continuously lengthwise of the tube from the head to a point at or near the outer end thereof.
A hole is bored in the timber B of a diameter slightly less than that of a circle inclosing the ridges a, so that it is necessary to use some force in driving the tube into the hole. The tube may be either driven clear in so that the enlarged head rests against one surface of the timber, or only partially so that acousiderable portion of the tube at the head end projects beyond the timber, which latter position is desirable forthe purpose of turning Saria1No.495.9ti3. (No model.)
a corner with the wire or changing its direction, thereby rendering an additional insulator or fastening at that point unnecessary. In either case whether wholly or partially driven in, the tube is held very firmly in the wood against any possibility of being turned around or changed in position, or easily withdrawn.
Very high insulation resistance is secured by reason of the fact that the tube is in contact with the wood along the three ridges (to, a only, there being an air space between the main portion of the tube and the inner surface of the hole. This construction acts not only to greatly increase the insulation by reason of the small portion of the tube in contact with the wood, but also insures a quick drying out of the tube and hole in case of wetting.
Although I have considered the use of the tube in connection with a timber, it is of course tobeunderstood that the tubeis equally applicable for use in brick work or other material in buildings.
1. A timber or other part of a wall or floor provided with the hole I) in combination with an insulating tube A having the longitudinal ridges a throughout the entire length of the body of the tube whereby the tube is firmly held concentrically in the hole with an insulating air space on all sides of the tube between it and the timber, substantially as described.
2. An insulating tube A provided with longitudinal ridgesathroughoutthe entire length of the body of the tube substantially as and for the purposes described.
in testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 24th day of November, A. D. 1893.
' MINER ROBINSON.
Witnesses:
ALBERT E. LEAOH, G. GUNTHER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US517591A true US517591A (en) | 1894-04-03 |
Family
ID=2586394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US517591D Expired - Lifetime US517591A (en) | Insulating-tube |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US517591A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4580767A (en) * | 1984-12-31 | 1986-04-08 | Lifetime Fence Company | Electric fence including a ribbed tubular sleeve insulator |
| US6779490B1 (en) * | 2000-04-17 | 2004-08-24 | Keith M. Betzen | Electrode separator for deer repellent device |
| US20050125837A1 (en) * | 2001-07-05 | 2005-06-09 | Wave7 Optics, Inc. | Method and system for providing a return path for signals generated by legacy video service terminals in an optical network |
| US20070219553A1 (en) * | 2004-04-20 | 2007-09-20 | James Chappuis | Internal Pedicle Insulator Implants Assemblies and Methods of Use |
| DE102010037139A1 (en) * | 2010-08-24 | 2012-03-01 | Georg Jordan Gmbh | Low-voltage insulator |
-
0
- US US517591D patent/US517591A/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4580767A (en) * | 1984-12-31 | 1986-04-08 | Lifetime Fence Company | Electric fence including a ribbed tubular sleeve insulator |
| US6779490B1 (en) * | 2000-04-17 | 2004-08-24 | Keith M. Betzen | Electrode separator for deer repellent device |
| US20050125837A1 (en) * | 2001-07-05 | 2005-06-09 | Wave7 Optics, Inc. | Method and system for providing a return path for signals generated by legacy video service terminals in an optical network |
| US20070219553A1 (en) * | 2004-04-20 | 2007-09-20 | James Chappuis | Internal Pedicle Insulator Implants Assemblies and Methods of Use |
| US8900236B2 (en) * | 2004-04-20 | 2014-12-02 | James Chappuis | Internal pedicle insulator implants assemblies and methods of use |
| DE102010037139A1 (en) * | 2010-08-24 | 2012-03-01 | Georg Jordan Gmbh | Low-voltage insulator |
| EP2423926A3 (en) * | 2010-08-24 | 2013-11-13 | Georg Jordan GmbH | Low-voltage insulator |
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