GB855179A - Improvements in the manufacture of gratings - Google Patents

Improvements in the manufacture of gratings

Info

Publication number
GB855179A
GB855179A GB3271257A GB3271257A GB855179A GB 855179 A GB855179 A GB 855179A GB 3271257 A GB3271257 A GB 3271257A GB 3271257 A GB3271257 A GB 3271257A GB 855179 A GB855179 A GB 855179A
Authority
GB
United Kingdom
Prior art keywords
bearers
stay
cross
notches
carriage
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
Application number
GB3271257A
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 GB3271257A priority Critical patent/GB855179A/en
Publication of GB855179A publication Critical patent/GB855179A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/005—Making gratings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

855,179. Making gratings; jointing by forging; broaching. MENTIS, A. Oct. 14, 1958 [Oct. 10, 1957], No. 32712/57. Classes 83 (2), 83 (3) and 83 (4). In a method of making metal gratings, e.g. for flooring &c., having bearers 12 and crossstays 19, Fig. 4, bearers are assembled in parallel-spaced relationship, and simultaneous and repetitive operations are then carried out to cut notches 18 in the bearers 19, to insert and cross-stay in previously cut notches, and to press a previously-inserted cross-stay to deform the metal at the junctions to secure the cross-stay to the bearers. A carriage 13 straddles the bearers 12, which are supported on a slotted bed 11 and carries mechanisms 14-16. Mechanism 14 comprises a saw 17 which, during a traverse of the carriage, progressively cuts notches 18 and slightly undercuts the bottom of the notches with the broach-like trailing part of the saw. Mechanism 15 having a grip 21, simultaneously with the action of the notching-saw, engages a cross-stay 19 in previously-formed notches. Both mechanisms 14, 15, are retracted upwards on the return traverse of the carriage 13 by a spring 34 released by a cam 35. The joint is made at each junction between the bearers 12 and the cross-stays 19 by a series of swaging-blocks 29 resiliently mounted on a cross-member 28, the blocks 29 working in conjunction with anvils 31 which engage the bottom of the bearers and cross-stay. During the traverse of the carriage in both directions, a roller 24, held down by heavy supports 27, presses the swaging-blocks 29 into engagement with the junctions of the grating to deform the metal of bearers 12 and stays 19 about each other and to press the bottom of the stay into the bottoms of the notches 18, which shear slightly, a preformed thickening on the underside of the stay being thus caused to swell into the undercut-portions of the notches. After each traverse of the carriage the fingers 38, 39 feed the grating one step to the right, and a cutting-action, to sever a length of strip 19 from a roll, may be associated with the movement of the fingers. The carriage may be reciprocated by a rack-andpinion. The swaging-pressure may be applied by an hydraulic-jack or jacks or by the pressure-plate of a press.
GB3271257A 1957-10-19 1957-10-19 Improvements in the manufacture of gratings Expired GB855179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3271257A GB855179A (en) 1957-10-19 1957-10-19 Improvements in the manufacture of gratings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3271257A GB855179A (en) 1957-10-19 1957-10-19 Improvements in the manufacture of gratings

Publications (1)

Publication Number Publication Date
GB855179A true GB855179A (en) 1960-11-30

Family

ID=10342883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3271257A Expired GB855179A (en) 1957-10-19 1957-10-19 Improvements in the manufacture of gratings

Country Status (1)

Country Link
GB (1) GB855179A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725927A1 (en) * 1994-10-21 1996-04-26 Caillebotis France System for manufacturing grid with inclined blades
ES2296555A1 (en) * 2007-07-12 2008-04-16 Juan Carlos Muñoz Arroyo Method for obtaining strips fixing and holding system for bars, involves applying push or pressure on strips, particularly on area that includes cuts or transverse grooves allowing assembly of strips, where stamping is also carried out

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725927A1 (en) * 1994-10-21 1996-04-26 Caillebotis France System for manufacturing grid with inclined blades
ES2296555A1 (en) * 2007-07-12 2008-04-16 Juan Carlos Muñoz Arroyo Method for obtaining strips fixing and holding system for bars, involves applying push or pressure on strips, particularly on area that includes cuts or transverse grooves allowing assembly of strips, where stamping is also carried out

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