US1163375A - Form for concrete. - Google Patents

Form for concrete. Download PDF

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Publication number
US1163375A
US1163375A US84910214A US1914849102A US1163375A US 1163375 A US1163375 A US 1163375A US 84910214 A US84910214 A US 84910214A US 1914849102 A US1914849102 A US 1914849102A US 1163375 A US1163375 A US 1163375A
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United States
Prior art keywords
concrete
forms
edges
tube
california
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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
US84910214A
Inventor
James R Selfridge
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SELFRIDGE HOLDING Co
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SELFRIDGE HOLDING Co
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 SELFRIDGE HOLDING Co filed Critical SELFRIDGE HOLDING Co
Priority to US84910214A priority Critical patent/US1163375A/en
Application granted granted Critical
Publication of US1163375A publication Critical patent/US1163375A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17Floor structures partly formed in situ
    • E04B5/18Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members
    • E04B5/19Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members the filling members acting as self-supporting permanent forms
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S249/00Static molds
    • Y10S249/02Paper core

Definitions

  • the invention relates to forms which are to be used to support concrete before it has set.
  • the object of the invention is to provide a new concrete form.
  • a further object of the invention is to provide a light, cheap and eflicient form for concrete which may be quickly made and which may be used a plurality of times if desirable.
  • Figure 1 is a perspective View of a spiral wound tube from which the forms of my invention are made.
  • Fig. 2 is a perspective view of one form of the concrete form.
  • Fig. 3 is a perspective view of a modified form of the concrete form.
  • Fig. 4 is a vertical section of a portion of concrete floor construction showin the application of one species of the form of my invention.
  • the form or mold of my invention is formed of a spiral wound tube formed of paper or similar material.
  • the paper or material from which the tube is made may be of waterproof construction or the tube may be waterproofed after it is made.
  • the tube consists of several spirally wound strips, one overlying the other and arranged in a staggered relation therewith, so that one sheet overlies and seals the joint formed in the adjacent sheet.
  • the sheets are held together by glue or other adhesive, and the tube consists preferably of two spiral sheets one overlying the other, although a greater number of sheets may be used when desirable.
  • the spirally wound tube 2 is split longitudinally, producing the segmental form 3 and the segmental form may be semi-circular, or the angle subtended by the segment may be greater or less than a straight angle, depending upon the circumstances of the concrete construction.
  • edges of the segmental form may be waterproofed by dipping into a waterproofing material or otherwise applying the waterproofing material, or the edges may be bound with sheet metal strips 4 which are preferably crimped over the edges.
  • the metal binding not only prevents the form from absorbing moisture at the edges, but also reinforces the form, and protects the edges from inury.
  • Fig. 4 I have illustrated an application of the forms of my invention to concrete floor construction, but it is to be understood that the form is not limited in use to floor construction, but may be used in any type of concrete construction.
  • the forms 3 are spaced from each other, forming a series of spaced arches and the forms are held in place by suitable supports which are removed after the concrete has set.
  • the longitudinal edges of the forms rest on the timbers 5, and in the beam formed between the arches is placed the reinforcing material 6.
  • the timbers 5 are supported by suitable framing 7 which may either be hung from the I-beams 8 or supported from beneath or both.
  • the upper or crown portion of the form is held down by the reinforcing bar or bars 9, which preferably spans from one I-beam to the next and is attached to said beams.
  • This arrangement of floor, formed of concrete beams separated by arches, is very economical in consumption of concrete in relation to the floor load, and I have found that by employing the arched forms having a diticular diameter.
  • the forms are waterproofed, they do not absorb moisture and thereby become weakened, and may be removed after the concrete has set and be subsequently used.
  • the forms are Very light, so that a great saving in labor is effected on account of their use, and they may be nested and stored in a small space.
  • a form for concrete consisting of a segment of spirally wound paper tube provided on its edges with a metal binding.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Description

J. R. SELFRIDGE.
FORM FOR CONCRETE.
APPLICATION FILED JULY 6. I914 1,163,375. Patented Dec. 7, 1915.
. INV EN TOR. WITNESSES: J/fi SEA F/F/D 6-5 7 BY Mum mM- fi ATTORNEYS.
@TATEfl PATENT ()FFIQE.
JAMES R. SELFRIDGE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO SELFRIDGE HOLDING COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.
FORM FOR CONCRETE.
Specification of Letters Patent.
Patented Dec. 7, 1915.
To all whom it may concern:
Be it known that I, JAMES R. Snnrnmen, a citizen of the United States, and a resident of the city and county of San Francisco, State of California, have invented certain new and useful Improvements in Forms for Concrete, of which the following is a specification.
The invention relates to forms which are to be used to support concrete before it has set.
The object of the invention is to provide a new concrete form.
A further object of the invention is to provide a light, cheap and eflicient form for concrete which may be quickly made and which may be used a plurality of times if desirable.
The invention possesses other advantageous features, some of which, with the foregoing, will be set forth at length in the following description, whereI shall outline in full that form of the invention which I have selected for illustration in the drawings accompanying and forming part of the present specification.
In the drawings I have shown one specific form of my generic invention, but it is to be understood that I do not limit myself to such form because my invention may be embodied in a multiplicity of forms, each being a species of my said invention. It is also to be understood that by the claims succeeding the description of my invention, I desire to cover the invention in whatever form it may be embodied.
Referring to said drawings: Figure 1 is a perspective View of a spiral wound tube from which the forms of my invention are made. Fig. 2 is a perspective view of one form of the concrete form. Fig. 3 is a perspective view of a modified form of the concrete form. Fig. 4 is a vertical section of a portion of concrete floor construction showin the application of one species of the form of my invention.
The form or mold of my invention is formed of a spiral wound tube formed of paper or similar material. The paper or material from which the tube is made may be of waterproof construction or the tube may be waterproofed after it is made. The tube consists of several spirally wound strips, one overlying the other and arranged in a staggered relation therewith, so that one sheet overlies and seals the joint formed in the adjacent sheet. The sheets are held together by glue or other adhesive, and the tube consists preferably of two spiral sheets one overlying the other, although a greater number of sheets may be used when desirable.
When the forms are to be used as supports for a concrete floor, the spirally wound tube 2 is split longitudinally, producing the segmental form 3 and the segmental form may be semi-circular, or the angle subtended by the segment may be greater or less than a straight angle, depending upon the circumstances of the concrete construction.
The edges of the segmental form may be waterproofed by dipping into a waterproofing material or otherwise applying the waterproofing material, or the edges may be bound with sheet metal strips 4 which are preferably crimped over the edges. The metal binding not only prevents the form from absorbing moisture at the edges, but also reinforces the form, and protects the edges from inury.
In Fig. 4, I have illustrated an application of the forms of my invention to concrete floor construction, but it is to be understood that the form is not limited in use to floor construction, but may be used in any type of concrete construction. In the application illustrated, the forms 3 are spaced from each other, forming a series of spaced arches and the forms are held in place by suitable supports which are removed after the concrete has set. The longitudinal edges of the forms rest on the timbers 5, and in the beam formed between the arches is placed the reinforcing material 6. The timbers 5 are supported by suitable framing 7 which may either be hung from the I-beams 8 or supported from beneath or both. The upper or crown portion of the form is held down by the reinforcing bar or bars 9, which preferably spans from one I-beam to the next and is attached to said beams. This arrangement of floor, formed of concrete beams separated by arches, is very economical in consumption of concrete in relation to the floor load, and I have found that by employing the arched forms having a diticular diameter.
On account of the fact that the forms are waterproofed, they do not absorb moisture and thereby become weakened, and may be removed after the concrete has set and be subsequently used. The forms are Very light, so that a great saving in labor is effected on account of their use, and they may be nested and stored in a small space.
I claim:
1. A form for concrete consisting of a segment of spirally wound paper tube provided on its edges with a metal binding.
2. In a form for concrete floor construe tion, a plurality of arched segments of spirally wound paper tube spaced apart laterally adapted to support the fresh concrete and supporting means engaging the longitudinal edges of the segments. 7
In testimony whereof, I have hereunto set my hand at San Francisco, California, this 29th day of June, 1914:.
JAMES R. SELFRIDGE.
In presence of- H. G. Pnos'r, J. BLGARDN R.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents J Washington, D. C.
US84910214A 1914-07-06 1914-07-06 Form for concrete. Expired - Lifetime US1163375A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US84910214A US1163375A (en) 1914-07-06 1914-07-06 Form for concrete.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84910214A US1163375A (en) 1914-07-06 1914-07-06 Form for concrete.

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US1163375A true US1163375A (en) 1915-12-07

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US84910214A Expired - Lifetime US1163375A (en) 1914-07-06 1914-07-06 Form for concrete.

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893098A (en) * 1955-01-20 1959-07-07 David H Tilley Means for applying simulated masonry to walls and the exterior surfaces of buildings
US3178856A (en) * 1960-09-05 1965-04-20 Grebner Fritz Form arrangement for casting transverse connecting members in a concrete girder ceiling
US3216875A (en) * 1958-04-17 1965-11-09 John L Seymour Method of making structural materials
US5328142A (en) * 1992-07-17 1994-07-12 Sonoco Products Company Concrete column forming tube
US20090179137A1 (en) * 2007-02-15 2009-07-16 Abzac Canada Inc. Retaining device for assembling two panels, recyclable formwork for forming a concrete structure and packaging assembly using the same
US8083203B2 (en) 2007-02-15 2011-12-27 Abzac Canada Inc. Retaining device for assembling two panels, recyclable formwork for forming a concrete structure and packaging assembly using the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893098A (en) * 1955-01-20 1959-07-07 David H Tilley Means for applying simulated masonry to walls and the exterior surfaces of buildings
US3216875A (en) * 1958-04-17 1965-11-09 John L Seymour Method of making structural materials
US3178856A (en) * 1960-09-05 1965-04-20 Grebner Fritz Form arrangement for casting transverse connecting members in a concrete girder ceiling
US5328142A (en) * 1992-07-17 1994-07-12 Sonoco Products Company Concrete column forming tube
US5376316A (en) * 1992-07-17 1994-12-27 Sonoco Products Company Method of making a concrete column with a concrete column forming tube
US20090179137A1 (en) * 2007-02-15 2009-07-16 Abzac Canada Inc. Retaining device for assembling two panels, recyclable formwork for forming a concrete structure and packaging assembly using the same
US8083203B2 (en) 2007-02-15 2011-12-27 Abzac Canada Inc. Retaining device for assembling two panels, recyclable formwork for forming a concrete structure and packaging assembly using the same
US8313080B2 (en) 2007-02-15 2012-11-20 Abzac Canada Inc. Retaining device for assembling two panels, recyclable formwork for forming a concrete structure and packaging assembly using the same

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