US2480477A - Apparatus for removing forms from concrete blocks - Google Patents
Apparatus for removing forms from concrete blocks Download PDFInfo
- Publication number
- US2480477A US2480477A US690113A US69011346A US2480477A US 2480477 A US2480477 A US 2480477A US 690113 A US690113 A US 690113A US 69011346 A US69011346 A US 69011346A US 2480477 A US2480477 A US 2480477A
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- US
- United States
- Prior art keywords
- sections
- aperture
- section
- plug
- concrete blocks
- 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
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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
- B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
- B28B7/12—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article by fluid pressure, e.g. acting through flexible wall parts or linings of the moulds
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
Definitions
- My invention relatestoforms for producing concrete blocks or the like and more particularly toapparatus tOTGli-ljOlftH tom-from the finished block.
- the object of invention is to provide an apparatus to be pieced between the'mold and the material tobe forriiedtlierein and adapted to be filled with compressed air to lift andremove the formfrom the finished product.
- FIG. 1 is a top View of an apparatus according temy invention.
- 7 I I i Figure'2- is asectional view taken on line Z -2 in Figure 1 the apparatus beingshown in deflated position.
- 7 I H Figure 3' is a sectionalview similar to Figures, but showing the apparatus in inflated position and showing a connection between the apparatus and a pipe line for compressed air, and
- Figure 4 is an exploded sectional detail view of a fragment of the upper section of the apparatus and the lower section thereof, showing a compressed air outlet in the upper section and a guide pin fitting in said outlet and rigidly mounted on the lower section, the two sections being made from a center layer of textile and two layers of rubber covering the center layer.
- the apparatus has preferably a circular outline.
- Figures 2 and 3 it is shown as being made from automobile body metal or the like. It has a circular upper section It], on which an upwardly extending hollow boss H is either formed integrally or fastened rigidly, as by welding.
- the boss is located centrally of the circular section,
- a pipe I2 is located in and extends through the hollow boss II and through the top or upper section l0. It is securely fastened in position by means of a washer l3, firmly attached to the underside of the upper section Ill, for instance, by welding.
- the upper end of the pipe I2 is provided with an outside thread It adapted to be threadedly engaged by a coupling nut IS on s'oiaime (01. 25-120) .2 e 5 ahose f6 or the like connected with a source-of compressed air (not shown).
- a plurality or holes :1 is provided in the upper section HF, and these holes are arrangedat equal distances from the centrally located pipe 12 and at equal angular distances from each other.
- a lower section t8 has the same shape and size as the top section [0 and-the two' sections are.
- a plurality guide plugs l'9 are securely fas tenee'onto the upper" surface or the lower section it and are locatedthereon, so that they come-- spend with the location of the holes 11 in the upper section to.
- Theplugs are finished to fit slidably said: holes.
- ccnisistirig of an inner layer 2t made from: teX tiIe' fabric and two outside layers 22' and 23 respec- 2i? ti vefii 1132166 from rubber and covering the in tial layer;
- Thelbwer section 24 illustratedin Figure- 4 is also made or aninr ier textile layer 25 and two outside rubber layers ⁇ 26 and 21 respectively coyering the inner textile layer 25.
- This pipe corresponds to the pipe 2 in Figme sz'and 3 and adapted be engaged by acoupl-ing similar to the nut It
- a plurality of holes 28, corresponding to the holes I! in Figure 3, is provided in the upper section 20 and the edges of these holes are protected against damage by thin steel washers 29 embedded in the textile layer 2
- frustoconical countersunk washers 30 are provided in the lower section 24 .
- extends upwardly, and a plug 32 is adapted to be engaged threadedly by and securely held on each screw.
- the screws are located so that the plugs 32 fit slidably into the holes 28 in the upper section 20, when the two sections are connected with each other on their circumference to form an air-tight unit.
- the above described apparatus is arranged on a form 33, in which a concrete block. 34 or the like is to be formed, before the concrete is poured. After the block 34 is finished and ready for removal, compressed air is permitted to flow into the apparatus, expanding it, as shown in Figure 3 and separating the form from the block easily and readily.
- An apparatus for stripping a form from a molded article by fluid pressure comprising an expansible member adapted to be interposed between an inner surface of a form and the molding material contained therein, said member comprising inner and outer coextensive sections of impervious sheet material disposed in superposed relation, said sections including marginal portions hermetically sealed together, means for introducing fluid under pressure between said sections to expand said member, one of said sections being formed with at least one aperture therethrough, a plug carried by the other section and extending through said aperture, said plug being formed to have a close sliding flt in said aperture, and said plug being adapted to be completely withdrawn from 'said aperture after predetermined expansion of said member, whereby to relieve fluid pressure therein.
- An apparatus for stripping a form from a molded article by fluid pressure comprising an expansible member adapted to be interposed between an inner surface of a form and the molding material contained therein, said member comprising inner and outer coextensive sections of impervious sheet material disposed in superposed relation, said sections including marginal portions hermetically sealed together, means for introducing fluid under pressure between said sections to expand said member, said outer section being formed with at least one aperture therethrough, an inwardly directed plug carried by said inner section and extending through said aperture, said plug being formed to have a close sliding fit in said aperture, and said plug being adapted to be completely withdrawn from said aperture after predetermined expansion of said member, whereby to relieve fluid pressure therein.
- An apparatus for stripping a form from a molded article by fluid pressure comprising an expansible member adapted to be interposed between an inner surface of a form and the molding material contained therein, said member comprising inner and outer coextensive sections of sheet metal disposed in superposed relation, said sections including marginal portions hermetically sealed together, and means for introducing fluid under pressure between said sections to expand said member.
- An apparatus for stripping a form from a molded article by fluid pressure comprising an expansible member adapted to be interposed between an inner surface of a form and the molding material contained therein, said member com prising inner and outer coextensive sections of impervious textile sheets disposed in superposed relation, said sections including marginal portions hermetically sealed together, and means for introducing fluid under pressure between said sections to expand said member.
- An apparatus for stripping a form from a molded article by fluid pressure comprising an expansible member adapted to be interposed between an inner surface of a form and the molding material contained therein, said member comprising inner and outer coextensive sections of impervious sheet material disposed. in superposed relation, said sections including marginal.portions hermetically sealed together, means for introducing fluid under pressure between said sections to expand said member, one of said sections being formed with at least one aperture therethrough, annular means reinforcing said aperture, a plug slidable in said aperture, means'detachably connecting said plug to the other section, and said plug being adapted to be completely withdrawn from said aperture after predetermined'expansion of said member, whereby to relieve fluid pressure therein.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Description
Aug. 30, 1949. 7 s 2,480,477
APPARATUS FOR REMOVING FORMS FROM CONCRETE BLOCKS Filed Aug. 13, 1946 I Z-rrzsf I Johzs Patented Aug. 30, 1949 UNITED STATES PATENT F FICE- APPARATUSjQREEMOVING- Foams FRQM I coNon 'rE BLGGKS ForrestH. Jones, Rockport, Wash. Application August 13, 1946;, seriai No. 690,113
My inventionrelatestoforms for producing concrete blocks or the like and more particularly toapparatus tOTGli-ljOlftH tom-from the finished block.
The object of invention is to provide an apparatus to be pieced between the'mold and the material tobe forriiedtlierein and adapted to be filled with compressed air to lift andremove the formfrom the finished product. v 7
other objeets of the invention nray'appeari n thefolIowi-iig specification describing my ir'n err-- tion with reference to the accompanying drawing illustrating preferred {embodiment of my imfntifi.
It is, however, to be understood thatmy inven tior-i is not tobe limited or restricted to the exact construction and combination of parts described in the specification and shown in the drawing, but that such changes and'modifications can; be made which fall within the scope of the claims appended hereto.
In the drawing Figure 1 is a top View of an apparatus according temy invention. 7 I I i Figure'2- is asectional view taken on line Z -2 in Figure 1 the apparatus beingshown in deflated position. 7 I H Figure 3' is a sectionalview similar to Figures, but showing the apparatus in inflated position and showing a connection between the apparatus and a pipe line for compressed air, and
Figure 4 is an exploded sectional detail view of a fragment of the upper section of the apparatus and the lower section thereof, showing a compressed air outlet in the upper section and a guide pin fitting in said outlet and rigidly mounted on the lower section, the two sections being made from a center layer of textile and two layers of rubber covering the center layer.
Referring now ,in detail to the drawing the apparatus according to my invention has preferably a circular outline. In Figures 2 and 3 it is shown as being made from automobile body metal or the like. It has a circular upper section It], on which an upwardly extending hollow boss H is either formed integrally or fastened rigidly, as by welding. The boss is located centrally of the circular section, A pipe I2 is located in and extends through the hollow boss II and through the top or upper section l0. It is securely fastened in position by means of a washer l3, firmly attached to the underside of the upper section Ill, for instance, by welding. The upper end of the pipe I2 is provided with an outside thread It adapted to be threadedly engaged by a coupling nut IS on s'oiaime (01. 25-120) .2 e 5 ahose f6 or the like connected with a source-of compressed air (not shown).
a plurality or holes :1 is provided in the upper section HF, and these holes are arrangedat equal distances from the centrally located pipe 12 and at equal angular distances from each other.
A lower section t8 has the same shape and size as the top section [0 and-the two' sections are.
securely welded together at their circumference; so that the seam is air-' tigh-t.
' A plurality guide plugs l'9 are securely fas tenee'onto the upper" surface or the lower section it and are locatedthereon, so that they come-- spend with the location of the holes 11 in the upper section to. Theplugs are finished to fit slidably said: holes. e
-, In: Figure 4;-
upper section is illustrated ccnisistirig of an inner layer 2t made from: teX tiIe' fabric and two outside layers 22' and 23 respec- 2i? ti vefii 1132166 from rubber and covering the in tial layer; Thelbwer section 24 illustratedin Figure- 4 is also made or aninr ier textile layer 25 and two outside rubber layers} 26 and 21 respectively coyering the inner textile layer 25.
embedded; This pipe corresponds to the pipe 2 in Figme sz'and 3 and adapted be engaged by acoupl-ing similar to the nut It A plurality of holes 28, corresponding to the holes I! in Figure 3, is provided in the upper section 20 and the edges of these holes are protected against damage by thin steel washers 29 embedded in the textile layer 2| or by wales provided in said layer.
In the lower section 24 frustoconical countersunk washers 30 are provided. Through each countersunk washer a countersunk screw 3| extends upwardly, and a plug 32 is adapted to be engaged threadedly by and securely held on each screw. The screws are located so that the plugs 32 fit slidably into the holes 28 in the upper section 20, when the two sections are connected with each other on their circumference to form an air-tight unit.
In use the above described apparatus is arranged on a form 33, in which a concrete block. 34 or the like is to be formed, before the concrete is poured. After the block 34 is finished and ready for removal, compressed air is permitted to flow into the apparatus, expanding it, as shown in Figure 3 and separating the form from the block easily and readily.
While my invention has been described in use 3 for removing cement blocks from the forms or vice versa, it is to be understood that it can also be used for stripping forms from concrete walls and all other types of concrete constructions.
Having described my invention I claim as new and desire to secure by Letters Patent:
1. An apparatus for stripping a form from a molded article by fluid pressure, comprising an expansible member adapted to be interposed between an inner surface of a form and the molding material contained therein, said member comprising inner and outer coextensive sections of impervious sheet material disposed in superposed relation, said sections including marginal portions hermetically sealed together, means for introducing fluid under pressure between said sections to expand said member, one of said sections being formed with at least one aperture therethrough, a plug carried by the other section and extending through said aperture, said plug being formed to have a close sliding flt in said aperture, and said plug being adapted to be completely withdrawn from 'said aperture after predetermined expansion of said member, whereby to relieve fluid pressure therein.
An apparatus for stripping a form from a molded article by fluid pressure, comprising an expansible member adapted to be interposed between an inner surface of a form and the molding material contained therein, said member comprising inner and outer coextensive sections of impervious sheet material disposed in superposed relation, said sections including marginal portions hermetically sealed together, means for introducing fluid under pressure between said sections to expand said member, said outer section being formed with at least one aperture therethrough, an inwardly directed plug carried by said inner section and extending through said aperture, said plug being formed to have a close sliding fit in said aperture, and said plug being adapted to be completely withdrawn from said aperture after predetermined expansion of said member, whereby to relieve fluid pressure therein.
3. An apparatus for stripping a form from a molded article by fluid pressure, comprising an expansible member adapted to be interposed between an inner surface of a form and the molding material contained therein, said member comprising inner and outer coextensive sections of sheet metal disposed in superposed relation, said sections including marginal portions hermetically sealed together, and means for introducing fluid under pressure between said sections to expand said member.
4. An apparatus for stripping a form from a molded article by fluid pressure, comprising an expansible member adapted to be interposed between an inner surface of a form and the molding material contained therein, said member com prising inner and outer coextensive sections of impervious textile sheets disposed in superposed relation, said sections including marginal portions hermetically sealed together, and means for introducing fluid under pressure between said sections to expand said member.
5. An apparatus for stripping a form from a molded article by fluid pressure, comprising an expansible member adapted to be interposed between an inner surface of a form and the molding material contained therein, said member comprising inner and outer coextensive sections of impervious sheet material disposed. in superposed relation, said sections including marginal.portions hermetically sealed together, means for introducing fluid under pressure between said sections to expand said member, one of said sections being formed with at least one aperture therethrough, annular means reinforcing said aperture, a plug slidable in said aperture, means'detachably connecting said plug to the other section, and said plug being adapted to be completely withdrawn from said aperture after predetermined'expansion of said member, whereby to relieve fluid pressure therein. r
FORREST H. JONES.
REFERENCES CITED The following references are of record in the
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US690113A US2480477A (en) | 1946-08-13 | 1946-08-13 | Apparatus for removing forms from concrete blocks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US690113A US2480477A (en) | 1946-08-13 | 1946-08-13 | Apparatus for removing forms from concrete blocks |
Publications (1)
Publication Number | Publication Date |
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US2480477A true US2480477A (en) | 1949-08-30 |
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Application Number | Title | Priority Date | Filing Date |
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US690113A Expired - Lifetime US2480477A (en) | 1946-08-13 | 1946-08-13 | Apparatus for removing forms from concrete blocks |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2716796A (en) * | 1950-12-21 | 1955-09-06 | Smith William Herbert | Presses for moulding plastic substances |
US2792614A (en) * | 1953-11-06 | 1957-05-21 | Robert L Altschuler | Device for making building blocks |
US2850785A (en) * | 1957-01-04 | 1958-09-09 | Ceco Steel Products Corp | Method and means for releasing molding forms from a molded product |
US3092366A (en) * | 1960-09-15 | 1963-06-04 | Frank R Kobee | Pneumatic jack |
US3181213A (en) * | 1963-03-06 | 1965-05-04 | Altamil Corp | Method for the use of dynamic vacuum in foundry operations |
US3418767A (en) * | 1965-03-24 | 1968-12-31 | Seeger Fritz | Wall structure with expellable insert |
US3512756A (en) * | 1967-09-05 | 1970-05-19 | Dike O Seal Inc | Pressurizable elastomeric thrusting device |
US3666229A (en) * | 1970-05-18 | 1972-05-30 | Materiel Special Entr | Valve apparatus for shuttering removal |
US3822861A (en) * | 1973-05-21 | 1974-07-09 | S Scott | Inflatable form breaker for molded construction |
US3958790A (en) * | 1974-05-06 | 1976-05-25 | Scott Samuel C | Concrete wall forming panel with inflatable liner means |
WO1985002170A1 (en) * | 1983-11-14 | 1985-05-23 | Stith Morris Randall Jr | Expansible support and method of use |
US6298539B1 (en) * | 1997-05-20 | 2001-10-09 | Claus Hornstrup Dissing | Appliance for the emergency opening of the doors of a vehicle |
WO2012129614A1 (en) * | 2011-03-31 | 2012-10-04 | DE BONTE INTERNATIONAL, besloten vennootschap met beperkte aansprakelijkheid | Mould for casting a concrete element, a method applied with it and a production line equipped with it |
US10889477B2 (en) * | 2017-04-12 | 2021-01-12 | Xtreme Air Wedge, LLC | Inflatable air wedge with tool channel and associated method |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1146413A (en) * | 1911-12-20 | 1915-07-13 | New Jersey Patent Co | Method for producing tablets for sound-records. |
US1806861A (en) * | 1931-05-26 | Apparatus for making composite glass | ||
US2138620A (en) * | 1937-05-24 | 1938-11-29 | Eric J Pilblad | Vulcanizing device |
US2168285A (en) * | 1935-07-26 | 1939-08-01 | Compo Shoe Machinery Corp | Method of making shoe press pads |
US2281133A (en) * | 1940-03-04 | 1942-04-28 | Tyler D Abercrombic | Mold for concrete blocks |
US2292410A (en) * | 1940-12-31 | 1942-08-11 | Pierce John B Foundation | Molding apparatus |
US2314823A (en) * | 1939-08-10 | 1943-03-23 | Jenkins Bros | Molding apparatus |
-
1946
- 1946-08-13 US US690113A patent/US2480477A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1806861A (en) * | 1931-05-26 | Apparatus for making composite glass | ||
US1146413A (en) * | 1911-12-20 | 1915-07-13 | New Jersey Patent Co | Method for producing tablets for sound-records. |
US2168285A (en) * | 1935-07-26 | 1939-08-01 | Compo Shoe Machinery Corp | Method of making shoe press pads |
US2138620A (en) * | 1937-05-24 | 1938-11-29 | Eric J Pilblad | Vulcanizing device |
US2314823A (en) * | 1939-08-10 | 1943-03-23 | Jenkins Bros | Molding apparatus |
US2281133A (en) * | 1940-03-04 | 1942-04-28 | Tyler D Abercrombic | Mold for concrete blocks |
US2292410A (en) * | 1940-12-31 | 1942-08-11 | Pierce John B Foundation | Molding apparatus |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2716796A (en) * | 1950-12-21 | 1955-09-06 | Smith William Herbert | Presses for moulding plastic substances |
US2792614A (en) * | 1953-11-06 | 1957-05-21 | Robert L Altschuler | Device for making building blocks |
US2850785A (en) * | 1957-01-04 | 1958-09-09 | Ceco Steel Products Corp | Method and means for releasing molding forms from a molded product |
US3092366A (en) * | 1960-09-15 | 1963-06-04 | Frank R Kobee | Pneumatic jack |
US3181213A (en) * | 1963-03-06 | 1965-05-04 | Altamil Corp | Method for the use of dynamic vacuum in foundry operations |
US3418767A (en) * | 1965-03-24 | 1968-12-31 | Seeger Fritz | Wall structure with expellable insert |
US3512756A (en) * | 1967-09-05 | 1970-05-19 | Dike O Seal Inc | Pressurizable elastomeric thrusting device |
US3666229A (en) * | 1970-05-18 | 1972-05-30 | Materiel Special Entr | Valve apparatus for shuttering removal |
US3822861A (en) * | 1973-05-21 | 1974-07-09 | S Scott | Inflatable form breaker for molded construction |
US3958790A (en) * | 1974-05-06 | 1976-05-25 | Scott Samuel C | Concrete wall forming panel with inflatable liner means |
WO1985002170A1 (en) * | 1983-11-14 | 1985-05-23 | Stith Morris Randall Jr | Expansible support and method of use |
US4592532A (en) * | 1983-11-14 | 1986-06-03 | Stith Jr M Randall | Expansible support and method of use |
US6298539B1 (en) * | 1997-05-20 | 2001-10-09 | Claus Hornstrup Dissing | Appliance for the emergency opening of the doors of a vehicle |
WO2012129614A1 (en) * | 2011-03-31 | 2012-10-04 | DE BONTE INTERNATIONAL, besloten vennootschap met beperkte aansprakelijkheid | Mould for casting a concrete element, a method applied with it and a production line equipped with it |
BE1020140A3 (en) * | 2011-03-31 | 2013-05-07 | Bonte International Bv Met Beperkte Aansprakelijkheid De | CASTING MOLD FOR CASTING A CONCRETE ELEMENT, METHOD THEREOF APPLIED AND PRODUCTION LINE FITTED OUT THEREFORE. |
US10889477B2 (en) * | 2017-04-12 | 2021-01-12 | Xtreme Air Wedge, LLC | Inflatable air wedge with tool channel and associated method |
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