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US785162A - Internal pipe-wrench. - Google Patents

Internal pipe-wrench. Download PDF

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Publication number
US785162A
US785162A US20541304A US1904205413A US785162A US 785162 A US785162 A US 785162A US 20541304 A US20541304 A US 20541304A US 1904205413 A US1904205413 A US 1904205413A US 785162 A US785162 A US 785162A
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US
United States
Prior art keywords
wrench
pipe
shaft
internal pipe
gripping
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
US20541304A
Inventor
Emanuel Freytag
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US20541304A priority Critical patent/US785162A/en
Application granted granted Critical
Publication of US785162A publication Critical patent/US785162A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
    • B25B13/54—Internal grip wrenches

Definitions

  • Figure 1 is a side view of the gripping end of the wrench in the interior of a pipe shown in section.
  • Fig. 2 is an end view of the pipewrench.
  • Fig. 3 is a plan of the wholev device, the disks being indicated by dotted lines.
  • Figs. 4:, 5, and 6 show the eccentrically-mounted and grooved and serrated gripping-disks of the wrench.
  • the wrench consists of a shaft (0, with a guide piece or shoulder b and a square head 0.
  • the central disk 6 is fixed to the spindle a, the two other disks, d and f, on the contrary, being movable thereon and arranged eccentrically, the outer disk f being supported by the washer g and nut t', the latter being screwed onto the threaded extension /l 0f the spindle a.
  • Fig. 1 shows the method of employing the wrench.
  • 7a is a plate or side wall into which a pipe Z is screwed.- If this pipe Z is to be removed or unscrewed, the wrench is pushed into the pipe so far that the guide-piece 6 comes even with the mouth of the pipe, and the tool is turned in the direction of the arrow by means of a crank-handle. or the like, which is applied to the squared end 0. Owing to this turning of the tool, the grooved and serrated disks spread apart, so to speak, and firmly grip the inside of the pipe. The wrench is then rotated, thus causing the end of the screwed-in pipe to become unscrewed to such an extent that the pipe can be easily removed. The same tool can also be employed for screwing in the pipe if it be turned in the opposite direction, the gripping-disks will come into close connection with the inside of the pipe.
  • a pipe-wrench comprising a shaft, a gripping-disk rigidly and eccentrically secured to said shaft, and a plurality of revoon said shaft. 7
  • a pipe-wrench comprising a shaft, a guide-piece on said shaft, a gripping-disk eccentrically and rigidly secured on said shaft, one or more gripping-disks eccentrically mounted on said shaft and adapted to coact with the first-named disk to engage the interior of a pipe, and means for turning said shaft.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

No. 785,162. PATENTED MAR. 21,1905.
HPREYTAG, INTERNAL PIPE WRENCH.
APPLIUATION FILED APR. 28, 1904:
messes. A Inventor UNITED STATES Patented March 21, 1905.
EMANUEL FREYTAG, OF HAMBURG, GERMANY.
INTERNAL PIPE-WRENCH.
SPECIFICATION forming part of Letters Patent N0. 785,162, dated March 21, 1905.
Application filed April 28, 1904. Serial No. 205.413.
1'0 (t/J iii/tom it may concern.-
and the like.
The invention is illustrated in the accompanying drawings.
Figure 1 is a side view of the gripping end of the wrench in the interior of a pipe shown in section. Fig. 2 is an end view of the pipewrench. Fig. 3 is a plan of the wholev device, the disks being indicated by dotted lines. Figs. 4:, 5, and 6 show the eccentrically-mounted and grooved and serrated gripping-disks of the wrench.
The wrench consists of a shaft (0, with a guide piece or shoulder b and a square head 0. The central disk 6 is fixed to the spindle a, the two other disks, d and f, on the contrary, being movable thereon and arranged eccentrically, the outer disk f being supported by the washer g and nut t', the latter being screwed onto the threaded extension /l 0f the spindle a.
Fig. 1 shows the method of employing the wrench. 7a is a plate or side wall into which a pipe Z is screwed.- If this pipe Z is to be removed or unscrewed, the wrench is pushed into the pipe so far that the guide-piece 6 comes even with the mouth of the pipe, and the tool is turned in the direction of the arrow by means of a crank-handle. or the like, which is applied to the squared end 0. Owing to this turning of the tool, the grooved and serrated disks spread apart, so to speak, and firmly grip the inside of the pipe. The wrench is then rotated, thus causing the end of the screwed-in pipe to become unscrewed to such an extent that the pipe can be easily removed. The same tool can also be employed for screwing in the pipe if it be turned in the opposite direction, the gripping-disks will come into close connection with the inside of the pipe.
What I claim as my invention, and desire to secure by Letters Patent, is-
1. A pipe-wrench, comprising a shaft, a gripping-disk rigidly and eccentrically secured to said shaft, and a plurality of revoon said shaft. 7
2. A pipe-wrench, comprising a shaft, a guide-piece on said shaft, a gripping-disk eccentrically and rigidly secured on said shaft, one or more gripping-disks eccentrically mounted on said shaft and adapted to coact with the first-named disk to engage the interior of a pipe, and means for turning said shaft.
In testimony whereof I afiix'mysignature in presence of two witnesses.
EMANUEL FREYTAG. Witnesses:
E. H. L. MUMMENHOFF, O'r'ro WV. HELLMRICI-I.
.luble gripping-disks eccentrically mounted
US20541304A 1904-04-28 1904-04-28 Internal pipe-wrench. Expired - Lifetime US785162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US20541304A US785162A (en) 1904-04-28 1904-04-28 Internal pipe-wrench.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20541304A US785162A (en) 1904-04-28 1904-04-28 Internal pipe-wrench.

Publications (1)

Publication Number Publication Date
US785162A true US785162A (en) 1905-03-21

Family

ID=2853654

Family Applications (1)

Application Number Title Priority Date Filing Date
US20541304A Expired - Lifetime US785162A (en) 1904-04-28 1904-04-28 Internal pipe-wrench.

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US (1) US785162A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455005A (en) * 1945-10-30 1948-11-30 Lee R Hall Internal pipe wrench
US2763304A (en) * 1953-08-31 1956-09-18 James M Neil Screw-holding screw driver
US2920894A (en) * 1956-06-11 1960-01-12 Horace C Kreinick Quick acting tool holder
US5055060A (en) * 1989-06-02 1991-10-08 Gilbert Engineering Company, Inc. Tamper-resistant cable terminator system
US5927165A (en) * 1996-10-28 1999-07-27 Maxtech, Inc. Hex keys and other tools with non-slip feature
US7140281B1 (en) 2005-01-24 2006-11-28 Jim Ruff Elastic connection wedge wrench
US20110061501A1 (en) * 2009-09-17 2011-03-17 Qun Jia Signal lock tool
US20130133487A1 (en) * 2011-11-25 2013-05-30 Yang-Ming Hsu Tool Head Structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455005A (en) * 1945-10-30 1948-11-30 Lee R Hall Internal pipe wrench
US2763304A (en) * 1953-08-31 1956-09-18 James M Neil Screw-holding screw driver
US2920894A (en) * 1956-06-11 1960-01-12 Horace C Kreinick Quick acting tool holder
US5055060A (en) * 1989-06-02 1991-10-08 Gilbert Engineering Company, Inc. Tamper-resistant cable terminator system
US5927165A (en) * 1996-10-28 1999-07-27 Maxtech, Inc. Hex keys and other tools with non-slip feature
US7140281B1 (en) 2005-01-24 2006-11-28 Jim Ruff Elastic connection wedge wrench
US20110061501A1 (en) * 2009-09-17 2011-03-17 Qun Jia Signal lock tool
US20130133487A1 (en) * 2011-11-25 2013-05-30 Yang-Ming Hsu Tool Head Structure

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