GB554336A - Improvements in the method of and means for making hollow concrete units - Google Patents

Improvements in the method of and means for making hollow concrete units

Info

Publication number
GB554336A
GB554336A GB876943A GB876943A GB554336A GB 554336 A GB554336 A GB 554336A GB 876943 A GB876943 A GB 876943A GB 876943 A GB876943 A GB 876943A GB 554336 A GB554336 A GB 554336A
Authority
GB
United Kingdom
Prior art keywords
hollow concrete
concrete units
making hollow
core
rubber
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
GB876943A
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 GB876943A priority Critical patent/GB554336A/en
Publication of GB554336A publication Critical patent/GB554336A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/28—Cores; Mandrels
    • B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
    • B28B7/306—Cores; Mandrels adjustable, collapsible, or expanding pliable or extensible

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

554,336. Bores for casting hollow concrete units. MATHEWS, C. B., and AMBROSE, J. G. Sept. 19, 1941, No. 8769/43. Divided out of 554,269. [Class 87 (ii)] A non-circular non- inflatable core comprisestwo or more rubber or like resilient tubes B laid side by side and flexibly connected together as by sponge-rubber pieces C. A loose fabric or paper casing E covers the core. Specification 554,269 is referred to.
GB876943A 1941-09-19 1941-09-19 Improvements in the method of and means for making hollow concrete units Expired GB554336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB876943A GB554336A (en) 1941-09-19 1941-09-19 Improvements in the method of and means for making hollow concrete units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB876943A GB554336A (en) 1941-09-19 1941-09-19 Improvements in the method of and means for making hollow concrete units

Publications (1)

Publication Number Publication Date
GB554336A true GB554336A (en) 1943-06-29

Family

ID=9858934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB876943A Expired GB554336A (en) 1941-09-19 1941-09-19 Improvements in the method of and means for making hollow concrete units

Country Status (1)

Country Link
GB (1) GB554336A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977658A (en) * 1958-07-21 1961-04-04 Flexicore Co Cores for manufacture of precast slabs
CN104942977A (en) * 2015-06-29 2015-09-30 中民筑友有限公司 Core pulling pipe of prefabricated member and manufacturing method of prefabricated member
CN105171907A (en) * 2015-06-29 2015-12-23 中民筑友有限公司 Prefabricated part core pulling pipe and manufacturing method for prefabricated part

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977658A (en) * 1958-07-21 1961-04-04 Flexicore Co Cores for manufacture of precast slabs
CN104942977A (en) * 2015-06-29 2015-09-30 中民筑友有限公司 Core pulling pipe of prefabricated member and manufacturing method of prefabricated member
CN105171907A (en) * 2015-06-29 2015-12-23 中民筑友有限公司 Prefabricated part core pulling pipe and manufacturing method for prefabricated part

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