US771594A - Method of making conduits. - Google Patents

Method of making conduits. Download PDF

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Publication number
US771594A
US771594A US18894604A US1904188946A US771594A US 771594 A US771594 A US 771594A US 18894604 A US18894604 A US 18894604A US 1904188946 A US1904188946 A US 1904188946A US 771594 A US771594 A US 771594A
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US
United States
Prior art keywords
tubes
making
conduits
saddles
mold
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
Application number
US18894604A
Inventor
Otto Wilhelmi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gesellschaft fur Kabelschutz - Anlagen G M Bh
Kabelschutz Anlagen Ges GmbH
Original Assignee
Kabelschutz Anlagen Ges GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kabelschutz Anlagen Ges GmbH filed Critical Kabelschutz Anlagen Ges GmbH
Priority to US18894604A priority Critical patent/US771594A/en
Application granted granted Critical
Publication of US771594A publication Critical patent/US771594A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/44—Plastic and nonmetallic article shaping or treating: processes using destructible molds or cores in molding processes

Definitions

  • This invention relates to a new method of making conduits adapted for the reception of electric wires, cables, and similar devices.
  • the invention is particularly designed to permit the ready formation of an elbow within the conduit.
  • Figure 1 is a perspective view of a conduit constructed according to my invention
  • Fig.2 a horizontal section on line 2 2, Fig. 1;
  • Fig. 3 a vertical cross-section of the conduit;
  • Fig. 4 a de tail of the flexible tube, and
  • Fig. 5 a detail of one of the saddles.
  • a mold or casing a are arranged a number of saddles b, placed at suitable intervals. These saddles are provided with grooves a to form the seats for a series of metallic flexible tubes 0, which have previously been covered with a coating of fat or other meltable material d.
  • the flexible tubes 0 are in Fig. 4 shown to be formed of a coiled strip of metal which is S-shaped in cross-section, so that the adjoining coils will become interlocked. It is evident, however, that the tubes may be of different construction. After the tubes have been fitted in the manner described the'mold a is filled with concrete 0, which is tamped around the tubes and saddles.
  • the concrete is allowed to set, and then a heating medium, such as steam, is introduced into the tubes, which will melt the coating (Z, and thus disconnect the tubes from the concrete.
  • a heating medium such as steam
  • the tubes are now withdrawn to form the conduits for the wires, cables, 860. These conduits will be coated by the retained fatty body (Z, which forms a non-conductive and moisture-excluding protective layer.
  • the tubes may beplaced in a straight direction and may also be curved or bent to form elbows of any suitable radius, Fig. 2. Owing to their resiliency, the tubes may also readily be Withdrawn from curved as well as from straight positions.
  • lVhat I claim is- The process of making aconduit, which consists in fitting saddles into a mold, covering flexible tubes with a meltable coating, mounting the covered tubes upon the saddles, tamping concrete into the mold, melting the coating, and withdrawing the tubes, substantially as specified.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Description

PATENTED OCT. 4, 1904 0. WI'LHELMI.
METHOD OF MAKING oomnmws.
APPLICATION FILED JAN.1.4, 1904.
NO MODEL.
UNITED STATES Patented October 4, 1904.
PATENT OFFICE.
GESELLSOHAFT FI IR KABELSOHUTZ BERLIN. GERMANY.
ANLAGEN, G. M. B. H., OF
METHOD OF MAKlNG.C ONDUlTS.
SPECIFIGATION fQrming part of Letters Patent No. 771,594, dated October 4, 1904. Application filed January 14, 1904. Serial No. 188,946. (No model.)
To all whom it may concern.-
Be it known that I, OTTOVVILHELMI, a citizen of Germany, residing at Berlin-Zehlendorf, Germany, have invented new and useful Improvements in Methods of Making Conduits,of which the following is a specification.
This invention relates to a new method of making conduits adapted for the reception of electric wires, cables, and similar devices.
The invention is particularly designed to permit the ready formation of an elbow within the conduit.
In the accompanying drawings, Figure 1 is a perspective view of a conduit constructed according to my invention; Fig.2, a horizontal section on line 2 2, Fig. 1; Fig. 3, a vertical cross-section of the conduit; Fig. 4, a de tail of the flexible tube, and Fig. 5 a detail of one of the saddles.
In constructing my improved conduit I proceed as followsnVVithin a mold or casing a are arranged a number of saddles b, placed at suitable intervals. These saddles are provided with grooves a to form the seats for a series of metallic flexible tubes 0, which have previously been covered with a coating of fat or other meltable material d. The flexible tubes 0 are in Fig. 4 shown to be formed of a coiled strip of metal which is S-shaped in cross-section, so that the adjoining coils will become interlocked. It is evident, however, that the tubes may be of different construction. After the tubes have been fitted in the manner described the'mold a is filled with concrete 0, which is tamped around the tubes and saddles. The concrete is allowed to set, and then a heating medium, such as steam, is introduced into the tubes, which will melt the coating (Z, and thus disconnect the tubes from the concrete. The tubes are now withdrawn to form the conduits for the wires, cables, 860. These conduits will be coated by the retained fatty body (Z, which forms a non-conductive and moisture-excluding protective layer.
It will be seen that by making the tubes flexible they may beplaced in a straight direction and may also be curved or bent to form elbows of any suitable radius, Fig. 2. Owing to their resiliency, the tubes may also readily be Withdrawn from curved as well as from straight positions.
lVhat I claim is- The process of making aconduit, which consists in fitting saddles into a mold, covering flexible tubes with a meltable coating, mounting the covered tubes upon the saddles, tamping concrete into the mold, melting the coating, and withdrawing the tubes, substantially as specified.
Signed by me at Berlin this 1st day of January, 1904. 1
' OTTO VVILHELMI.
Witnesses:
WOLDEMAR HAUPT, HENRY HASPER.
US18894604A 1904-01-14 1904-01-14 Method of making conduits. Expired - Lifetime US771594A (en)

Priority Applications (1)

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US18894604A US771594A (en) 1904-01-14 1904-01-14 Method of making conduits.

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US18894604A US771594A (en) 1904-01-14 1904-01-14 Method of making conduits.

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780837A (en) * 1951-11-27 1957-02-12 Math Fritz Method of embedding metal profiles in ceramic masses
US2820480A (en) * 1955-09-09 1958-01-21 Jr Innis O'rourke Encasement for steam pipes or the like and method of making same
US2903018A (en) * 1954-12-22 1959-09-08 Zonolite Company Parting agent for conduits
US2920456A (en) * 1956-04-24 1960-01-12 Raymond Int Inc Concrete piles and methods for forming and installing same
US2972968A (en) * 1956-11-21 1961-02-28 Thomas D Stafford Method of insulating and protecting pipe
US3027724A (en) * 1958-12-17 1962-04-03 Raymond Int Inc Method for making and installing concrete piles and the like
US3111397A (en) * 1960-12-12 1963-11-19 Arbed Method of producing dense refractory blocks having large dimensions
US3112165A (en) * 1958-11-28 1963-11-26 Atomic Energy Authority Uk Metal fabrication
US3263007A (en) * 1961-06-05 1966-07-26 Avco Corp Method of making a ceramic platen for a brazing fixture
US3320345A (en) * 1965-02-15 1967-05-16 Howmet Corp Method for the production of cored patterns
US3465432A (en) * 1966-06-06 1969-09-09 Thomas & Betts Corp Method for making memory storage units
US4438785A (en) * 1980-07-10 1984-03-27 Morrison John D Pipe enclosure
US5580104A (en) * 1995-05-03 1996-12-03 Newport News Shipbuilding & Dry Dock Company High capacity bulkhead stuffing insert
US20030230828A1 (en) * 2002-06-17 2003-12-18 Christopher Young Method of manufacturing a multi-port nozzle for dispensing liquids and nozzles produced therefrom

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780837A (en) * 1951-11-27 1957-02-12 Math Fritz Method of embedding metal profiles in ceramic masses
US2903018A (en) * 1954-12-22 1959-09-08 Zonolite Company Parting agent for conduits
US2820480A (en) * 1955-09-09 1958-01-21 Jr Innis O'rourke Encasement for steam pipes or the like and method of making same
US2920456A (en) * 1956-04-24 1960-01-12 Raymond Int Inc Concrete piles and methods for forming and installing same
US2972968A (en) * 1956-11-21 1961-02-28 Thomas D Stafford Method of insulating and protecting pipe
US3112165A (en) * 1958-11-28 1963-11-26 Atomic Energy Authority Uk Metal fabrication
US3027724A (en) * 1958-12-17 1962-04-03 Raymond Int Inc Method for making and installing concrete piles and the like
US3111397A (en) * 1960-12-12 1963-11-19 Arbed Method of producing dense refractory blocks having large dimensions
US3263007A (en) * 1961-06-05 1966-07-26 Avco Corp Method of making a ceramic platen for a brazing fixture
US3320345A (en) * 1965-02-15 1967-05-16 Howmet Corp Method for the production of cored patterns
US3465432A (en) * 1966-06-06 1969-09-09 Thomas & Betts Corp Method for making memory storage units
US4438785A (en) * 1980-07-10 1984-03-27 Morrison John D Pipe enclosure
US5580104A (en) * 1995-05-03 1996-12-03 Newport News Shipbuilding & Dry Dock Company High capacity bulkhead stuffing insert
US20030230828A1 (en) * 2002-06-17 2003-12-18 Christopher Young Method of manufacturing a multi-port nozzle for dispensing liquids and nozzles produced therefrom

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