US2378710A - Thread protector - Google Patents
Thread protector Download PDFInfo
- Publication number
- US2378710A US2378710A US511309A US51130943A US2378710A US 2378710 A US2378710 A US 2378710A US 511309 A US511309 A US 511309A US 51130943 A US51130943 A US 51130943A US 2378710 A US2378710 A US 2378710A
- Authority
- US
- United States
- Prior art keywords
- shell
- threads
- liner
- pipe
- protector
- 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
- 230000001012 protector Effects 0.000 title description 9
- 239000002184 metal Substances 0.000 description 7
- 230000006378 damage Effects 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 230000035939 shock Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D59/00—Plugs, sleeves, caps, or like rigid or semi-rigid elements for protecting parts of articles or for bundling articles, e.g. protectors for screw-threads, end caps for tubes or for bundling rod-shaped articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/005—Protection of pipes or objects of similar shape against external or internal damage or wear specially adapted for the ends of pipes
Definitions
- This invention relates to thread protectors for protecting screw threads from damage during the time the threaded element, such as pipe, is being transported, handled or stored. Not only does the invention afford protection to the threads from injury by chance violent contact with another object likely to harm the threads, but it serves as well toexclude dirt, sand, and other similar foreign substances and thus eliminate chance injury to the threads from. this cause. g
- Figure 1 is a vertical sectional view of the invention applied to the external threads of an end of a pipe;
- Figure 2 is an enlarged fragmentary vertical sectional view of the protector designed for application to an externally threaded object
- Figure 3 is a sectional view taken on line 33 of Fig. l with the pipe removed;
- Figure 4 is a vertical sectional view of a modifled form of the invention showing one of its applications for internal threads.
- the reference numeral l designates a section 'ofone end of a pipe, both ends of which are provided with external screw threads.
- the reference numeral 2 in said drawing designates a sheet metal shell of a gauge appropriately heavy for the purpose for which the shell is designed, the shell being of slightly larger diameter than the pipe I.
- a bushinglike insert or liner 3 is provided-interiorly of the shell 2 .
- said liner preferably having a length materially less than the exterior shell 2 and being fabricated from sheet metal of substantially lighter gauge than said shell.
- the liner3 may be immovably fixed within the shell by any of a number of available means common in the art. In the drawing, it is shown as being maintained rigidly in position by a plurality of registering nodule-like studs l formed simultaneously in the shell and liner by suitable rolls applied to the assembled parts.
- the liner 3 has formed in its side wall, as, for instance, by means of rolling, a, set of threads 5. As shown in the drawing, the threads are formed in that portion of the liner adjacent its outer end and do not extend throughoutthe entire length of the liner. Moreover, it may here be pointed out that the threads 5 are rolled into the comparatively light gauge sheet metal wall of the liner 3 sotha't they will accommodate themselves to substantially any size or type of external screw thread borne by the end of the pipe I.
- the gauge of sheet metal from which the liner is formed is suificiently light and flexible that it, together with its rolled threads, will become adapted to and mesh with substantially any size or type of screw thread borne by a, .pipe of a size for which the protector is designed.
- the lighter gauge liner affords means of attachment of the protector to the pipe substantially preventing chance displacement while the heavier smooth wall of the shell 2 servesas a shield to absorb damaging shocks to prevent injury to the threads therefrom.
- Theouter ends of the shell 2 and liner 3 are turned inward, as shown at 6, to form a flange or seat which forms a stop as well as a seal to prevent access of objectionable foreign substances.
- Figure 4 depicts a typical protector for internally threaded elements, as, for example, the end of an oil well sucker rod 1.
- the device comprises a sheet metal shell having a male member 8 adapted to be received within the tapped bore 9 of the end of the sucker rod.
- the shell is provided at its outer end with an outwardly and downwardly turned flange 9' adapted to embrace the end of the sucker rod.
- the inner portion of the male portion 8 is encased within a sheet metal cap l0.
- Said cap is fabricated from sheet metal of a gauge lighter the side walls of the cap and shell are spaced away from each other to provide a slight intervening space.
- Said cap may be fixedto the shell by crimping, as shown at l2, but any other appropriate means of attachment may be employed.
- 'A series of threads I3 is rolled in the cap Ill to become engaged with the internal screw threads of the bore 9.
- Arectangularlyshaped slot I4 is provided in the inner end of the shell toaccommodate an appropriate tool for attaching and detaching the protector.
Description
Patented June 19, 1945 THREAD PROTECTOR Ernest W. Krause, Wheeling, W. Va., assignor to Krause Stamping & Manufacturing'Company, Wheeling, W. Va., a corporation of West Virginia Application November 22, 1943, Serial No. 511,309
' (c1. 1ss 9s 1 Claim. This invention relates to thread protectors for protecting screw threads from damage during the time the threaded element, such as pipe, is being transported, handled or stored. Not only does the invention afford protection to the threads from injury by chance violent contact with another object likely to harm the threads, but it serves as well toexclude dirt, sand, and other similar foreign substances and thus eliminate chance injury to the threads from. this cause. g
In describing the invention in detail, reference is herein made to the accompanying drawing,
in -which Figure 1 is a vertical sectional view of the invention applied to the external threads of an end of a pipe;
Figure 2 is an enlarged fragmentary vertical sectional view of the protector designed for application to an externally threaded object;
Figure 3 is a sectional view taken on line 33 of Fig. l with the pipe removed; and
Figure 4 is a vertical sectional view of a modifled form of the invention showing one of its applications for internal threads.
Referring to Fig. 1 of said drawing, the reference numeral l designates a section 'ofone end ofa pipe, both ends of which are provided with external screw threads.
The reference numeral 2 in said drawing designates a sheet metal shell of a gauge appropriately heavy for the purpose for which the shell is designed, the shell being of slightly larger diameter than the pipe I.
Provided-interiorly of the shell 2 isa bushinglike insert or liner 3, said liner preferably having a length materially less than the exterior shell 2 and being fabricated from sheet metal of substantially lighter gauge than said shell.
The liner3 may be immovably fixed within the shell by any of a number of available means common in the art. In the drawing, it is shown as being maintained rigidly in position by a plurality of registering nodule-like studs l formed simultaneously in the shell and liner by suitable rolls applied to the assembled parts.
This means of permanently attaching the two j piecesis for purpose of illustration only since other and equally satisfactory means are now well known and common in the art.
The liner 3 has formed in its side wall, as, for instance, by means of rolling, a, set of threads 5. As shown in the drawing, the threads are formed in that portion of the liner adjacent its outer end and do not extend throughoutthe entire length of the liner. Moreover, it may here be pointed out that the threads 5 are rolled into the comparatively light gauge sheet metal wall of the liner 3 sotha't they will accommodate themselves to substantially any size or type of external screw thread borne by the end of the pipe I. In other words, the gauge of sheet metal from which the liner is formed is suificiently light and flexible that it, together with its rolled threads, will become adapted to and mesh with substantially any size or type of screw thread borne by a, .pipe of a size for which the protector is designed. Thus, the lighter gauge liner affords means of attachment of the protector to the pipe substantially preventing chance displacement while the heavier smooth wall of the shell 2 servesas a shield to absorb damaging shocks to prevent injury to the threads therefrom.
Theouter ends of the shell 2 and liner 3 are turned inward, as shown at 6, to form a flange or seat which forms a stop as well as a seal to prevent access of objectionable foreign substances.
Figure 4 depicts a typical protector for internally threaded elements, as, for example, the end of an oil well sucker rod 1. As illustrated. the device comprises a sheet metal shell having a male member 8 adapted to be received within the tapped bore 9 of the end of the sucker rod. The shell is provided at its outer end with an outwardly and downwardly turned flange 9' adapted to embrace the end of the sucker rod.
' The inner portion of the male portion 8 is encased within a sheet metal cap l0. Said cap is fabricated from sheet metal of a gauge lighter the side walls of the cap and shell are spaced away from each other to provide a slight intervening space. Said cap may be fixedto the shell by crimping, as shown at l2, but any other appropriate means of attachment may be employed. 'A series of threads I3 is rolled in the cap Ill to become engaged with the internal screw threads of the bore 9. Arectangularlyshaped slot I4 is provided in the inner end of the shell toaccommodate an appropriate tool for attaching and detaching the protector. The lighter gauge cap l0 with its versatile threads affords means of attachment of the protector to the threaded element while the heavier smooth wall of the shell serves as a shield to absorb chance damaging shocks likely to injure the delicate screw threads of the bore 9. Moreover, as will be noted from an examination of' associated with said shell, said element having,
a continuous rolled thread for connection to pipe threads of varying pitch, and means for rigidly connecting the shell and element in telescoping relation to each other.
ERNEST w. KRAUSE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US511309A US2378710A (en) | 1943-11-22 | 1943-11-22 | Thread protector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US511309A US2378710A (en) | 1943-11-22 | 1943-11-22 | Thread protector |
Publications (1)
Publication Number | Publication Date |
---|---|
US2378710A true US2378710A (en) | 1945-06-19 |
Family
ID=24034344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US511309A Expired - Lifetime US2378710A (en) | 1943-11-22 | 1943-11-22 | Thread protector |
Country Status (1)
Country | Link |
---|---|
US (1) | US2378710A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2701584A (en) * | 1950-05-29 | 1955-02-08 | Protector Products Inc | Thread and tube protector |
US2709456A (en) * | 1950-03-07 | 1955-05-31 | Wedge Protectors Inc | Thread protectors |
US4020873A (en) * | 1975-07-18 | 1977-05-03 | Precise Metals & Plastics, Inc. | Thread protector for an externally threaded pipe |
US20060237966A1 (en) * | 2003-07-17 | 2006-10-26 | Harald Scheider | Screw connection element and protective sleeve therefor |
US11136832B2 (en) | 2017-06-28 | 2021-10-05 | Uniarmour Llc | Thread protector for use with sucker rods and oil tools |
-
1943
- 1943-11-22 US US511309A patent/US2378710A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2709456A (en) * | 1950-03-07 | 1955-05-31 | Wedge Protectors Inc | Thread protectors |
US2701584A (en) * | 1950-05-29 | 1955-02-08 | Protector Products Inc | Thread and tube protector |
US4020873A (en) * | 1975-07-18 | 1977-05-03 | Precise Metals & Plastics, Inc. | Thread protector for an externally threaded pipe |
US20060237966A1 (en) * | 2003-07-17 | 2006-10-26 | Harald Scheider | Screw connection element and protective sleeve therefor |
US20090184516A1 (en) * | 2003-07-17 | 2009-07-23 | Harald Schneider | Screw connection element and protective covering therefor |
US7571936B2 (en) * | 2003-07-17 | 2009-08-11 | Harald Schneider | Screw connection element and protective sleeve therefor |
US11136832B2 (en) | 2017-06-28 | 2021-10-05 | Uniarmour Llc | Thread protector for use with sucker rods and oil tools |
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