US3540100A - Apparatus for forming two spaced bosses on metal cable - Google Patents

Apparatus for forming two spaced bosses on metal cable Download PDF

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Publication number
US3540100A
US3540100A US736858A US3540100DA US3540100A US 3540100 A US3540100 A US 3540100A US 736858 A US736858 A US 736858A US 3540100D A US3540100D A US 3540100DA US 3540100 A US3540100 A US 3540100A
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US
United States
Prior art keywords
cable
bench
bosses
carriage
sleeve
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
US736858A
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English (en)
Inventor
Robert Ernest Carriere
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.)
BAUDIN CHATEAUNEUF LOIRET
Original Assignee
BAUDIN CHATEAUNEUF LOIRET
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 BAUDIN CHATEAUNEUF LOIRET filed Critical BAUDIN CHATEAUNEUF LOIRET
Application granted granted Critical
Publication of US3540100A publication Critical patent/US3540100A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F5/00—Upsetting wire or pressing operations affecting the wire cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F45/00—Wire-working in the manufacture of other particular articles
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/16—Auxiliary apparatus
    • D07B7/18—Auxiliary apparatus for spreading or untwisting ropes or cables into constituent parts for treatment or splicing purposes
    • D07B7/187—Auxiliary apparatus for spreading or untwisting ropes or cables into constituent parts for treatment or splicing purposes for forming bulbs in ropes or cables
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5102—Binding or covering and cutting

Definitions

  • the equipment includes a bench equipped with means for gripping a cable at a certain distance from one of its ends, and with means for the compression of part of the cable between its end and its gripped part and two shells the internal forms which match the forms of the two bosses to be formed on the cable, and by an intermediate sleeve dismantleable into several parts, the internal diameter of which is equal to the diameter of the cable and the length of which is substantially equal to the distance between the two bosses to be formed.
  • This invention relates to the construction of equipment for the formation of double bosses on prestressing cables for reinforced concrete work, namely a traction boss formed following an anchoring boss.
  • the equipment according to the invention is noteworthy in that it is constituted on the one hand by a bench equipped with means for gripping a cable at a certain distance from one of its ends, and with means for compression of the part of the cable between its end and its gripped part, and on the other hand by two shells the internal forms of which match the forms of the two bosses to be formed on the cable, and by intermediate sleeve dismantleable into several parts, the internal diameter of which is equal to the diameter of the cable and the length of which is substantially equal to the distance between the two bosses to be formed.
  • the engagement is such that by the setting in action of the compression means the gripped cable is compelled to distend into the two shells, while its part received in the intermediate sleeve placed between the two shells retains its original diameter, therefore the bosses are stabilized by pouring mortar or other appropriate product into the shells and is permitted to set the mortar before the cable equipped with its two shells enclosing the bosses is withdrawn from the bench and the intermediate sleeve is removed.
  • the bench is in the form of a box of elongated form, one end wall of which forms a bearing face for the means for gripping the cable, while its opposite end wall forms the bearing face for a hydraulic jack for compression of the said cable.
  • the bottom of the box is equipped with centering supports for the shells and the intermediate sleeve.
  • the intermediate sleeve is supported by a carriage mounted for longitudinal sliding in the bench, preferably in two slideways formed in the longitudinal walls of the said bench.
  • a lower half-sleeve is rigidly fixed on the carrier and an upper half-sleeve is hingedly mounted thereon and equipped with means for tightening it against the lower half-sleeve.
  • the means for gripping the cable consist of an assembly of wedges or jaws having a common cylindrical bore the external faces of which possess a certain slope, and which are in contact with the internal faces of similar slope of a guide intended to bear against an internal end face of the bench.
  • the device for gripping the cable at a predetermined distance from its end can also be constituted by two half vice-jaws gripped by high-strength bolts.
  • a thrust piece is disposed which is guided axially in the bench and comprises a ferrule for reception of the end of the said cable.
  • the thrust piece is equipped with a screw or other locking element adapted to keep the cable under compression after release and removal of the jack, for the purpose of the casting of the mortar, or other appropriate product, for stabilization of the bosses.
  • FIG. 1 represents diagrammatically, in perspective, the whole of the equipment and the cable end upon which two bosses are to be formed, the intermediate sleeve being assumed to be detached from the bench and the form of the thrust piece being simplified, for reasons of clarity of representation,
  • FIG. 2 is a plan view of the whole of the equipment in position for an operation of formation of two bosses on a cable end
  • FIG. 3 is a vertical section along the line IIIIII in FIG. 2,
  • FIG. 4 is a cross-section along the line IVIV in FIG. 3, and
  • FIG. 5 is a cross-section along the line VV in FIG. 3.
  • the equipment as represented comprises a special bench designated as a whole by 5 (FIG. 1) and a certain number of special pieces for fitting on the cable.
  • These special pieces include a set of pieces forming a device for gripping the cable at a predetermined distance from its end.
  • This set is constituted by two wedges 11, 12 which possess. a common cylindrical bore, the diameter of which is equal to that of the cable 3 (see also FIGS.
  • the guide 17 possesses a cylindrical outer surface lodged in a corresponding cylindrical bore 21 of an anchoring piece 22 and it is equipped with a collar 23 intended to bear against a face of the anchoring piece.
  • a shell 26 (FIGS. 1 to 3) for the anchoring boss and a shell 27 for the traction boss possess internal forms matching the forms which the said bosses are to possess.
  • Their cylindrical outer surface presents a diameter smaller than that of the bore 21 of the anchoring piece so that subsequently the latter can be withdrawn by passing it over the shells, after the two bosses have been formed, the guide 17 and the wedges being dismantleable since they are in two parts.
  • the bench is constituted by an assembly of box form formed from steel plates welded to one another, one of the end plates 31 being intended to serve with its internal face as a bearing surface for the anchoring piece 22, and, so that the cable end equipped with the said anchoring piece may be lowered within the bench, this wall 31 has a slot 32 of width corresponding to the diameter of the cable.
  • the bottom of the bench is equipped with two cradles 34, 35 of suitable shape, adapted to support the two shells 26, 27 respectively at the correct height.
  • the two lateral walls 36, 37 of the bench 5 possess two longitudinal slots 38, 39' which serve as slideways for the heads of four screws, such as 41 which is secured to a carriage generally designated by 43 and which is intended to support an intermediate sleeve 44.
  • the sleeve 44 is indicated on the cable 3 of FIG. 1, solely for clarity of representation. In reality the sleeve 44 is formed by a lower half-sleeve 4411 which is secured to the carriage 43 and an upper half-sleeve 44b hingedly mounted on the carriage.
  • the sleeve 44 is carried on two levers 48, 49 (see also FIG. 4) pivotably mounted on spindles 51, 52 carried by this carriage.
  • the cable 3 can be gripped between the two half-sleeves by means of two handles 55, 56 respectively.
  • the handles intended to bear respectively on the tops of the ends of the two levers 48, 49, are screwed into the central part of two caps 57, 58 which are pivotably mounted about horizontal spindles 61, 62 carried by the carriage 43.
  • Locking nuts 63, 64 permit the locking the handles 55, 56.
  • another carriage 71 can slide, and this carries screws 72, 73 slidingly mounted in two horizontal slots 74, 75 serv ing as slideways for the heads of the said screws.
  • This carriage also slides on two straight strips 68, 69 fixed against the inner faces of the bench and forming slideways.
  • the carriage 71 is equipped with a ferrule 77 the end of which has a hollow 78 of suitable dimensions to receive the preferably suitably whipped end of the cable 3.
  • a hydraulic jack 82 In the space between the carriage 71 and the end wall 81 of the bench 5, a hydraulic jack 82 can be received.
  • the jack 82 is (FIG. 1) equipped with two pistons 83, 84 disposed on either side of the central vertical plane of the said jack, so as to come to bear against the adjacent face of the carriage 71 on either side of the geomet rical axis of the ferrule 77 and consequently of the cable to be compressed.
  • This screw is for example equipped with a head 87 pierced with radial holes into which a tommy bar can be introduced to rotate it.
  • the removable jack assembly 82 possesses a central groove 89 in which the blocking screw 86 can be received.
  • the two longitudinal Walls of the bench 5 possess two upper flanges 91, 92 situated in one and the same plane.
  • a horse-shoe-shaped packing piece 94 of variable thickness can be interposed between the intermediate sleeve 44 and the shell 26.
  • This equipment can be utilised in the following manner:
  • the anchoring piece 22 is solidly fixed on a cable 3 at a specific distance from its end by means of the wedges 11, 12 and the guides 17a, 17b. Then the anchoring boss S shell 26 and the traction boss shell 27 are successively slipped onto the cable.
  • the two shells 26, 27 rest on their respective cradles 34 and 35, while the anchoring piece 22 rests on the support cross-piece 85.
  • This anchoring piece is of the same width as the bench, it is immobilised in rotation also.
  • the upper half-sleeve 44b is turned down on the cable and tightened by means of the two handles 55, 56.
  • the carriage 71 is brought closer to the traction boss shell 27, it being ensured that the ferrule 77 is well engaged on the end of the cable.
  • the removable jack 82 is put into position abutting against the end face 81 of the bench. This jack is set in action so that the cable parts situated in the two shells are distended, forming the two bosses 1 and 2.
  • the intermediate part of the cable included between these two bosses is unable to distend since it is imprisoned and gripped in the intermediate sleeve 44.
  • the blocking screw 86 is tightened until its end bears against the carriage 71. Thereafter the hydraulic jack 82 can be released and removed from the bench.
  • the assembly comprising the bench and the cable part which it encloses is erected so that the mortar 98, 99 for stabilization of the bosses can be poured into the two shells.
  • the blocking screw 86 can be released, the sleeve 44 opened and the cable end equipped with its two shells and the anchoring piece assembly 22 can be withdrawn upwards.
  • the guide 17 is expelled on the side opposite to the anchoring boss 1, so that the wedges 15 and 16 are released.
  • the wedges and the two halves 17a, 17b of the guide 17 are withdrawn and finally it is then possible to withdraw the anchoring piece 22 itself, by passing it over the two shells 26, 27.
  • the external diameters of the shells 26 and 27 are made smaller than the bore 21 of the said anchoring piece for this purpose.
  • the device for gripping the cable at a predetermined distance from its end can equally be constituted by two half vice jaws gripped by high-strength bolts.
  • An apparatus for forming two bosses on a metal cable used for reinforced concrete comprising a bench having a box-like shape, means non-rotatably carried by the bench for gripping the cable at a distance from one of its ends, means supported on the bench for compressing the part of the cable between said one end and the gripped part, two shells each having an internal shape corresponding to the shape of the boss to be formed, an intermediate sleeve being separable into at least two parts, said sleeve having an internal diameter being equal to the diameter of the cable and the length thereof being substantially equal to the desired distance between the two bosses to be formed, whereupon actuation of said compressing means causes the cable to be distended into the two shells placed on it while the shape of the part of the cable in the intermediate sleeve is retained in its normal shape, said intermediate sleeve being removable from the cable and the cable being removable from the bench, and means being provided for retaining, at least temporarily, the shells around the bosses after the cable is removed from the
  • the bench is in the form of an elongated box having one end wall forming a bearing face for the means for gripping the cable and an opposite end wall forming a bearing face for the compressing means and wherein the compressing means is a hydraulic jack.
  • An apparatus as claimed in claim 2 having a carriage mounted in two slideways formed in the longitudinal walls of the box, a lower half-sleeve of the intermediate sleeve rigidly mounted on the carriage, an upper halfsleeve hinged to the carriage and means on the carriage for tightening the upper half-sleeve against the lower half-sleeve.
  • means for gripping the cable comprises a guide having a 4.
  • An apparatus for forming an anchoring boss and a traction boss on a metal cable used for reinforced concrete comprising an elongated rectangular box forming a bench, a wall at one end of the bench having a U-shaped recess of a width corresponding to the diameter of the cable, an anchoring piece received therein having a width equal to the internal width of the bench and having a cylindrical bore, a two-piece guide received in said anchoring piece having an outer diameter equal to the diameter of the cylindrical bore and having a tapered internal bore, two wedges received in said guide having inclined external surfaces slidable on the surfaces of the tapered bore and having together an internal bore equal to the diameter of the cable, a first cradle spaced from the wall of the bench for supporting a first shell for the anchoring boss, a second cradle spaced from the first cradle for supporting a second shell for the traction boss, each of said shells having an internal shape of the boss to be formed, a first carriage mounted in two slideways formed in the longitudinal walls of the box

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Cable Accessories (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
US736858A 1967-06-26 1968-06-13 Apparatus for forming two spaced bosses on metal cable Expired - Lifetime US3540100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR111849 1967-06-26

Publications (1)

Publication Number Publication Date
US3540100A true US3540100A (en) 1970-11-17

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US736858A Expired - Lifetime US3540100A (en) 1967-06-26 1968-06-13 Apparatus for forming two spaced bosses on metal cable

Country Status (3)

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US (1) US3540100A (fr)
FR (1) FR1548330A (fr)
GB (1) GB1186283A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060054748A1 (en) * 2004-09-13 2006-03-16 Dywidag-Systems International Pty Limited Apparatus and method for manufacturing a rock bolt

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538919A1 (de) * 1985-11-02 1987-05-21 Dyckerhoff & Widmann Ag Vorrichtung zum erzeugen einer ausbauchung an einer litze aus stahldraht
US6684585B2 (en) * 2001-05-30 2004-02-03 Robert Campbell Method and apparatus for providing a visual indication of the tension applied to a tendon of a post-tension system
CN108097735B (zh) * 2017-12-20 2019-11-05 施仙增 一种局部圆凸钢板条的制造方法
CN108057783B (zh) * 2017-12-20 2019-05-24 中山森利科技有限公司 一种用于制造局部圆凸钢坯的局部圆凸模具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1817854A (en) * 1929-06-11 1931-08-04 Sorensen John Process of producing coupling flanges
US2193078A (en) * 1938-08-25 1940-03-12 Richmond Screw Anchor Co Inc Method of making form ties
US3124090A (en) * 1964-03-10 Zatykq

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124090A (en) * 1964-03-10 Zatykq
US1817854A (en) * 1929-06-11 1931-08-04 Sorensen John Process of producing coupling flanges
US2193078A (en) * 1938-08-25 1940-03-12 Richmond Screw Anchor Co Inc Method of making form ties

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060054748A1 (en) * 2004-09-13 2006-03-16 Dywidag-Systems International Pty Limited Apparatus and method for manufacturing a rock bolt
US7458242B2 (en) 2004-09-13 2008-12-02 Dywidag-Systems International Pty Limited Apparatus and method for manufacturing a rock bolt

Also Published As

Publication number Publication date
FR1548330A (fr) 1968-12-06
GB1186283A (en) 1970-04-02
DE1759979A1 (de) 1971-09-23

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