US3030838A - Hydraulic pump-up tool - Google Patents

Hydraulic pump-up tool Download PDF

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Publication number
US3030838A
US3030838A US490377A US49037755A US3030838A US 3030838 A US3030838 A US 3030838A US 490377 A US490377 A US 490377A US 49037755 A US49037755 A US 49037755A US 3030838 A US3030838 A US 3030838A
Authority
US
United States
Prior art keywords
tool
ram
cylinder
liquid
crimping
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
US490377A
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English (en)
Inventor
Martin L Klingler
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.)
TE Connectivity Corp
Original Assignee
AMP Inc
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
Priority to NL99603D priority Critical patent/NL99603C/xx
Priority to BE545539D priority patent/BE545539A/xx
Priority to NL204637D priority patent/NL204637A/xx
Application filed by AMP Inc filed Critical AMP Inc
Priority to US490377A priority patent/US3030838A/en
Priority to FR1146207D priority patent/FR1146207A/fr
Priority to CH346268D priority patent/CH346268A/de
Priority to DEA24367A priority patent/DE1062781B/de
Application granted granted Critical
Publication of US3030838A publication Critical patent/US3030838A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping
    • H01R43/0427—Hand tools for crimping fluid actuated hand crimping tools

Definitions

  • the crimping of a connector onto an electric wire has developed into a highly specialized art. To obtain maximum efliciency in an electrical circuit, it is necessary to attach the connector to the wire in such a manner that the resistance at the junction of the wire and the connector is at least as low as the resistance of the wire. This is accomplished by crimping the connector onto the wire with a force great enough to cause a compaction of the metal of the wire and the connector so that the result is a jointure of the two. While it is possible to exert a large crimping force in a machine press, it is not always convenient to employ such a machine.
  • An object of the present invention is to provide a hydraulic, hand-operated crimping tool which has a means for insuring the free ow of fluid within the tool at all times.
  • Another object of this invention is to provide a hydraulic, hand-operated crimping tool which has a linkage between the body of the tool and the handles so as to provide a mechanical advantage.
  • Another object of this invention is to provide a hydraulic, hand-operated crimping tool which employs a special type of uid release mechanism that prevents the operator from inadvertently emptying the fluid from the tool.
  • FIGURE l shows a fragmentary cut-away plan view of a tool embodying the concepts of this invention
  • FIGURE 2 is a cross-sectional w'ew taken at 2-2 of FIGURE l;
  • FIGURE 3 is an exploded view of a part of the hydraulic system used in this device.
  • FIGURE 4 is a cross-sectional view taken along line 4 4 of FIGURE'I. This view 4represents the initial stage of the operation;
  • FIGURE 5 is a view similar to FIGURE 4, illustrating the ram-cylinder during the intake stage.
  • FIGURE 6 is a View similar to FIGURE 4 showing the relationship of parts in the linal stage of the operation.
  • the particular crimping tool shown in the drawings includes an upper nesting head generally shown at A, a main body B and handlesC. v
  • the nesting head A constitutes a part of the crimping means.
  • This head forms the subject matter of a separate application Serial No. 389,983, tiled November 3, 1953 in the name of Henry W. Demler for a Crimping Device, now Patent No. 2,762,414, and will only be described in general terms. In brief, it acts to receive the connector and wire during the crimping operation and supports the connector so that the mating die can effect the crimp.
  • the main body B as shown in FIGURE 4 includes a tubular barll Patented Apr. 24, 1962 rel 10 which forms a cylinder 11 to receive a piston member l2.
  • a cap 14 is threaded at 16 into the outer end of tubular barrel lt).
  • a set screw 18 prevents cap 14 from inadvertently unthreading from barrel 10.
  • a piston rod 2t) projects through the cap and carries a crimping die 22.
  • a spring 24 extends between a shoulder 26 on the inside of the cap and piston 12 to bias the piston away from the cap.
  • a spline 28 on the inside of the cap engages a keyway 30 on the piston to prevent rotational movement of the piston but permits longitudinal movement.
  • Sealing ring 32 forms a Huid-tight seal between piston 12 and cylinder 11.
  • a closure plate 34 with an orifice 36 therein extends across the inner end of cylinder 1l.
  • a hardened insert 38 is positioned in the opening.
  • a cylinder 40 depends from closure plate 34 to form a chamber for receiving a ram 42.
  • the opening 36 in the closure plate forms a horrd passageway between cylinder 11 and ram cylinder 40.
  • a one-way check valve 44 (IFIGURE 5) is urged against a valveseat 46 in passageway 36 by a spring 48 to permit iluid to flow from ram cylinder 4t) to piston-chamber l1, but prevents ilow in the opposite direction.
  • a second cylinder Si? is coaxially aligned with the first cylinder lt) at the lower surface of closure plate 34.
  • a plate 52 surrounds ram cylinder 40 and has a shoulder 54 which engages the lower edge of the second cylinder 50.
  • a nut 56 threaded over the outwardly projecting end of the cylinder 40 engages plate 52 ⁇ and thereby forces shoulder S4 against cylinder 5l) to secure the cylinder against closure Vplate 34.
  • This structure also forms a hollow reservoir ⁇ for the reception of liquid. Within the reservoir is an elastic, tubular member 58 which contains the liquid to be used in the system. In this particular modification one end of the elastic tubular member is seated in a recess 60' formed in closure-plate 34.
  • the elastic member is held in place by means of a neoprene O ring 62.
  • the lower end of the elastic tubular member 58 is secured to plate 52 in a similar manner.
  • a breather hole 64 is provided in cylinder 5t) ⁇ to permit free expansion and contraction of the elastic tubular member 58.
  • a second liquid passageway 66 connects the reservoir with the ram.
  • a second one-way valve 70 is positioned on a valve seat 72 and urged toward said Valve seat by a spring 74, to allow the liquid to tlow from the reservoir to the ram cylinder but to prevent flow in the opposite direction.
  • Valve seat 72 is threadedly attached to the closure plate and has a guard 76 surrounding it.
  • the guard is comprised of a tubular member having one open end which receives the valve seat. The other end of the guard is closed and an opening 7 8 is positioned in one side of the guard.
  • the opening in the guard is ⁇ located in the vicinity of the longitudinal axis of the tool body. This guard prevents the elastic member 58 from blocking the passageway of valve seat 72 when the liquid is pumped out of the reservoir and the elastic tubular member 5S is partially collapsed.
  • a bottom plate 80 is Secured to the plate 52 by filler cap screws 8l.
  • the bottom plate 80 has an opening 82 to accommodate the ram.
  • a pair of ears 83, 84 depend from plate 80 and support a pair of pivot pins 86, 88,
  • a pair of links 90, 92 are pivotally secured to pivot pins 86, 88, i.e. one link to each pin.
  • the opposite ends of the links are pivoted to handles 94, 96 by pivot pins 98 and t100 respectively.
  • the handles are also commonly pivoted to the ram 42 by means of a pivot pin 102. This toggle linkage between the handles 94 and 96 provides a mechanical advantage when the handles are operated to actuate the ram.
  • a passageway extends through the bottom plate 80 and the plate 52 to provide a means for filling the reservoir.
  • the filler cap screw 81 threads into this passageway.
  • the modification shown in the drawings has a by-pass passageway 106 provided between the opening 36 in the closure plate and the elastic tubular member 58.
  • Seated in by-pass passageway i106 is a release valve comprised of a valve body 108 which is urged against valve seat 110 by a threaded member 112. Unthreading member 112 approximately one revolution releases valve body 108 from valve seat 110, permitting the liquid to by-pass valve 44 and flow through passageway 106 into the elastic tubular member 58.
  • a spring-loaded stop member 114 (see FIGURE 2) engages a stop member 116 on threaded member 112, thus preventing threaded member 112 from completing more than one revolution.
  • Stop member 116 is composed of a screw which threads into and projects through a tapped bore in threaded member 112.
  • threaded member 112 is a screw-like member with a plurality of tapped bore holes in the head.
  • assembly member 112 is threaded into an opening 118 which communicates with by-pass opening 106.
  • the threaded member 112 is tightened until the inner end of the threaded member seats the valve tightly against the valve body.
  • stop member 116 is threaded into the bore hole in the head that is closest (in a counter-clockwise direction) to the spring-loaded stop member 114. This enables the operator to rotate threaded member 112 approximately one revolution in a counter-clockwise direction and no farther-thus insuring against the possibility of inadvertently removing screw member 1112.
  • An overload-release valve 120 (see FIGURE l) is also provided to protect the hydraulic system from too great a pressure.
  • a second by-pass passageway 122 is provided between the opening 36 and the elastic tubular member 58.
  • a conically shaped valve body 124 is urged against a complementary valve seat 128 by a spring 13-0 which acts against a backing piston 132.
  • the elastic tubular member 58 is belled outwardly in the central portion.
  • the elastic member will be somewhat wrinkled (see FIGURES l and 4) and will not be ilush with the cylinder 50.
  • Confining the elastic under pressure causes the elastic to exert a force on the liquid to provide a free flow of liquid ⁇ through the system. This arrangement also prevents the elastic member from adhering to the cylinder 50 and provides for the free contraction of the elastic member.
  • sealing means are provided wherever necessary throughout the tool.
  • a series of strokes on the handles will cause the liquid to be extracted from the elastic tubular member 58 with a corresponding deformation of this member, see FIGURE 6.
  • the liquid will raise the piston 12, and force die 22 against the die nest with a pressure sufficient to provide an extremely efficient crimp; in the particular tool shown herein the die exerts a force on the order of six tons opposed by the die nest.
  • the by-pass release valve 108 etc. is opened by rotating screw member 112 in a counterclockwise direction. Stops 114 and 116 will prevent it from being turned more than one revolution. This releases valve body 108 from valve seat 110.
  • the spring 24 urges the piston 12 downwardly to force the liquid out of the piston chamber, through opening 36 in the closure plate, through passageway 106 and back into the elastic tubular member 58.
  • the one-way valve 44 prevents liquid from being forced back into ram cylinder 40. Then the release valve is closed and the tool is ready for another operation.
  • a hydraulic hand tool for crimping an electrical connector onto a conductor of the type having a body member with a crimping die which is urged toward a die nest by hydraulic means, the hydraulic means being actuated by a hand operated pump, the subcombination comprising valving means in said tool body for causing said hydraulic means to urge said crimping die by a plurality of increments: a longitudinally movable ram mounted in the body of the tool, a pair of handles, link means pivoted between the body and each of said handles, and the handles also being pivoted to the ram to form a toggle linkage.
  • a hydraulic hand tool ⁇ for crimping electrical connectors including a tool body, handle means associated with the body means, piston operated means in the tool body for crimping the connector, and means for operating said piston operated means including a fluid chamber longitudinally disposed in said tool body, a ram movable in the chamber, toggle linkage means connected to said handle means and said ram ⁇ for actuating the ram, said toggle linkage means comprising a link means in pivotal engagement with the body and said handle means, a lluid reservoir communicating with the chamber, means for causing uid to be transported from the reservoir to the chamber when lthe ram is moved in one direction, and causing it to be transported to the piston operated means under pressure when the ram is moved in the 0pposite direction, valving means in said tool body communicating with said chamber for causing the fluid to be transported in a plurality of increments and means for returning the fluid to the reservoir after the crimp is completed.
  • the ⁇ device of ⁇ claim 2 including a fluid inlet in the chamber, said inlet located near the longitudinal axis of the tool.
  • a portable hydraulic ram type tool having Work engaging elements, a pair of handles lying in a single plane, a body member containing a ram feed pump, and a closedizid system including the ram cylinder, the feed pump and a iluid reservoir, valving means in said tool body communicating with said chamber for causing the fluid to be transported in a plurality of increments, said feed pump being disposed with its plunger disposed between and in the plane of the handles and substantially parallel to the axes of said handles, and a variable mechanical advantage linkage between the handles and the ram, including at least one of said handles in pivotal engagement with the ram, and link means pivoted between said handles and said body.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Shearing Machines (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
US490377A 1955-02-24 1955-02-24 Hydraulic pump-up tool Expired - Lifetime US3030838A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL99603D NL99603C (nl) 1955-02-24
BE545539D BE545539A (nl) 1955-02-24
NL204637D NL204637A (nl) 1955-02-24
US490377A US3030838A (en) 1955-02-24 1955-02-24 Hydraulic pump-up tool
FR1146207D FR1146207A (fr) 1955-02-24 1956-02-22 Outil à pompe hydraulique
CH346268D CH346268A (de) 1955-02-24 1956-02-24 Hydraulisches Handwerkzeug zum Eindrücken eines elektrischen Verbindungselementes auf einem elektrischen Draht
DEA24367A DE1062781B (de) 1955-02-24 1956-02-24 Hydraulisches Handwerkzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US490377A US3030838A (en) 1955-02-24 1955-02-24 Hydraulic pump-up tool

Publications (1)

Publication Number Publication Date
US3030838A true US3030838A (en) 1962-04-24

Family

ID=23947782

Family Applications (1)

Application Number Title Priority Date Filing Date
US490377A Expired - Lifetime US3030838A (en) 1955-02-24 1955-02-24 Hydraulic pump-up tool

Country Status (6)

Country Link
US (1) US3030838A (nl)
BE (1) BE545539A (nl)
CH (1) CH346268A (nl)
DE (1) DE1062781B (nl)
FR (1) FR1146207A (nl)
NL (2) NL204637A (nl)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676929A (en) * 1969-11-07 1972-07-18 Donald R Nicholson Animal dehorning apparatus
US3706245A (en) * 1970-12-28 1972-12-19 Dynamic Tools Ltd Manual hydraulically-operated tools
US4055069A (en) * 1975-04-03 1977-10-25 Alessandro Caporusso Portable manually controlled hydraulic pipe bending apparatus
US4132107A (en) * 1977-06-24 1979-01-02 Izumi Products Company Hydraulic compression tool
US4136549A (en) * 1978-01-16 1979-01-30 Burndy Corporation Electrical cable connector tool
US4226110A (en) * 1977-08-22 1980-10-07 Izumi Products Company Hydraulic compression tool
US4604890A (en) * 1982-02-08 1986-08-12 Teledyne Penn-Union Compression tool
US4667502A (en) * 1982-10-01 1987-05-26 Square D Company Hydraulic compression apparatus
US4947672A (en) * 1989-04-03 1990-08-14 Burndy Corporation Hydraulic compression tool having an improved relief and release valve
US5113679A (en) * 1990-06-27 1992-05-19 Burndy Corporation Apparatus for crimping articles
US5152162A (en) * 1990-06-27 1992-10-06 Burndy Corporation System and method for crimping articles
US5195042A (en) * 1990-06-27 1993-03-16 Burndy Corporation Apparatus and method for controlling crimping of articles
US6276186B1 (en) 1997-10-15 2001-08-21 Gustav Klauke Gmbh Hydraulic pressing device and method for operating the same
EP1176308A1 (en) * 2000-07-28 2002-01-30 Framatome Connectors International Hydraulic tool with forward surrounding reservoir
US20150283693A1 (en) * 2014-04-07 2015-10-08 Hubbell Incorporated Multi-stage hydraulic tool

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US343780A (en) * 1886-06-15 Foueth to william
GB233340A (en) * 1924-05-05 1926-03-18 Samga Et Bavox Ets Improvements in actuating mechanism for air pumps or compressors
US2096574A (en) * 1933-12-13 1937-10-19 William M Denny Hydraulic pressure tool
US2352390A (en) * 1943-05-13 1944-06-27 Everett R Kirkland Hydraulic jack
US2555421A (en) * 1947-09-19 1951-06-05 Rudolph W Ronan Hydraulic jack
US2696850A (en) * 1950-06-10 1954-12-14 Aircraft Marine Prod Inc Crimping device
FR1097092A (fr) * 1953-03-13 1955-06-29 Aircraft Marine Products Mécanisme de mise en place pour outils à main
US2714250A (en) * 1954-09-14 1955-08-02 Arthur B Twedt Hydraulic pruning and cutting tool
US2729063A (en) * 1954-05-14 1956-01-03 Manco Mfg Co Hydraulic tool
US2869407A (en) * 1954-10-15 1959-01-20 Greenlee Bros & Co Portable metal working tool

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182663A (en) * 1938-02-19 1939-12-05 Gen Electric Hydraulic press for electric cables and method of utilizing the same
US2254613A (en) * 1938-08-13 1941-09-02 Matthysse Irving Frederick Hydraulic press
FR881498A (fr) * 1942-04-23 1943-04-27 Presse portative pour la jonction, de deux conducteurs électriques par l'intermédiaire d'un manchon et autres applications
US2690562A (en) * 1948-12-16 1954-10-05 Aircraft Marine Prod Inc Automatic terminal applying machine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US343780A (en) * 1886-06-15 Foueth to william
GB233340A (en) * 1924-05-05 1926-03-18 Samga Et Bavox Ets Improvements in actuating mechanism for air pumps or compressors
US2096574A (en) * 1933-12-13 1937-10-19 William M Denny Hydraulic pressure tool
US2352390A (en) * 1943-05-13 1944-06-27 Everett R Kirkland Hydraulic jack
US2555421A (en) * 1947-09-19 1951-06-05 Rudolph W Ronan Hydraulic jack
US2696850A (en) * 1950-06-10 1954-12-14 Aircraft Marine Prod Inc Crimping device
FR1097092A (fr) * 1953-03-13 1955-06-29 Aircraft Marine Products Mécanisme de mise en place pour outils à main
US2765688A (en) * 1953-03-13 1956-10-09 Aircraft Marine Prod Inc Work locating mechanism for connector crimping tools
US2729063A (en) * 1954-05-14 1956-01-03 Manco Mfg Co Hydraulic tool
US2714250A (en) * 1954-09-14 1955-08-02 Arthur B Twedt Hydraulic pruning and cutting tool
US2869407A (en) * 1954-10-15 1959-01-20 Greenlee Bros & Co Portable metal working tool

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676929A (en) * 1969-11-07 1972-07-18 Donald R Nicholson Animal dehorning apparatus
US3706245A (en) * 1970-12-28 1972-12-19 Dynamic Tools Ltd Manual hydraulically-operated tools
US4055069A (en) * 1975-04-03 1977-10-25 Alessandro Caporusso Portable manually controlled hydraulic pipe bending apparatus
US4132107A (en) * 1977-06-24 1979-01-02 Izumi Products Company Hydraulic compression tool
US4226110A (en) * 1977-08-22 1980-10-07 Izumi Products Company Hydraulic compression tool
US4136549A (en) * 1978-01-16 1979-01-30 Burndy Corporation Electrical cable connector tool
US4604890A (en) * 1982-02-08 1986-08-12 Teledyne Penn-Union Compression tool
US4667502A (en) * 1982-10-01 1987-05-26 Square D Company Hydraulic compression apparatus
US4947672A (en) * 1989-04-03 1990-08-14 Burndy Corporation Hydraulic compression tool having an improved relief and release valve
US5113679A (en) * 1990-06-27 1992-05-19 Burndy Corporation Apparatus for crimping articles
US5152162A (en) * 1990-06-27 1992-10-06 Burndy Corporation System and method for crimping articles
US5195042A (en) * 1990-06-27 1993-03-16 Burndy Corporation Apparatus and method for controlling crimping of articles
US6276186B1 (en) 1997-10-15 2001-08-21 Gustav Klauke Gmbh Hydraulic pressing device and method for operating the same
US6401515B2 (en) 1997-10-15 2002-06-11 Gustav Klauke Gmbh Hydraulic pressing device and method for operating the same
EP1176308A1 (en) * 2000-07-28 2002-01-30 Framatome Connectors International Hydraulic tool with forward surrounding reservoir
US6453719B1 (en) * 2000-07-28 2002-09-24 Fci Usa, Inc. Hydraulic tool with forward surrounding reservoir
US20150283693A1 (en) * 2014-04-07 2015-10-08 Hubbell Incorporated Multi-stage hydraulic tool
US10093010B2 (en) * 2014-04-07 2018-10-09 Hubbell Incorporated Multi-stage hydraulic tool

Also Published As

Publication number Publication date
NL204637A (nl)
NL99603C (nl)
FR1146207A (fr) 1957-11-07
DE1062781B (de) 1959-08-06
CH346268A (de) 1960-05-15
BE545539A (nl)

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