US1112542A - Adjustable and variable centering for concrete arches, &c.. - Google Patents
Adjustable and variable centering for concrete arches, &c.. Download PDFInfo
- Publication number
- US1112542A US1112542A US74912613A US1913749126A US1112542A US 1112542 A US1112542 A US 1112542A US 74912613 A US74912613 A US 74912613A US 1913749126 A US1913749126 A US 1913749126A US 1112542 A US1112542 A US 1112542A
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- Prior art keywords
- adjustable
- centering
- concrete
- section
- truss
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- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
Definitions
- My invention relates to adjustable and variable centering for reinforced concrete arches, bridges, culverts, tunnels and sewers, and in all places where it is necessary to use a curved supporting frame during construction work.
- the objects of my invention are first, to provide a construction of centering which 1s strong and compact in form and cheaply manufactured, and at the same time be quickly assembled, adjusted in position, and removed or knocked down in the shortest time, after the concrete arch has set, and transported to be again set up with the least cost; second, to provide a series of independent and adjustable sections which cooperate with an adjustable center section, whereby an arch of any radius not necessarily a multiple of the center section, and any depth, may be quickly and cheaply constructed; third, further objects and advantages of construction which will readily appear from the detailed description of the apparatus and mode of operating the same.
- FIG. 1 is a side elevation of the invention as it appears when assembled;
- Fig. 2 is a side view, partly in section, and on an enlarged scale, of two of the adjustable sections, forming the centering;
- Fig. 3 is an end view on an enlarged scale of an adjustable section;
- Fig. 4c is an enlarged side view, half in section and half in elevation, of the adjustable center section;
- Fig. 5 is a sec tion taken on line VV, of Fig. 4
- the intermediate sections 7, 7, are composed of triangular trusses made preferably of base members composed of channel irons 8, 8, and side members 9, 9, composed of angle irons, rigidly connected at one end to said base members by plates 9, 9 riveted to said base and side members and at their other or apex end of the truss, to plates 10,
- Said angle irons 9, 9, are connected and v braced together by cross pieces 11, 11, which securely hold the pieces forming the triangular trusses together in one rigid whole.
- the base members 8, 8, have secured to their ends plates 12, each of which is provided 7 with a round opening 13 to receive a pin 14,
- the plates 10 near the inner ends of angle irons 9, 9, are provided with openings 15 5 to receive pins 16 which pass through the eyes of right and left screw threaded rods 17, the ends of which are engaged by turnbuckles 18, as shown in Fig. 2.
- a hole 19 At the extreme outer end of each of the plates 10 is provided a hole 19 through which is passed a suitable rod 20 connecting the lower ends of two or more of the sections 7 7 to insure lateral rigidity, and said rod is kept from sliding through said holes 19 by a circular clamp 21 interposed between the ends of the plates 10 and encircling andfirmly gripping the rod 20.
- the adjustable center section shown in Figs. 1 and 5 is composed of a strut member 23 and two adjustable members 2 1, 24:, adapted to slide over the ends of the said strut member.
- the strut member is preferably of a hollow or box form and is composed of two pieces 25,25, U-shaped in cross section, and connected together by side pieces 26, 26, which side pieces are provided with a series of holes to receive bolts 27, 27 as shown.
- the adjustable members 24, 2 1, are likewise made of hollow or box form and adapted to fit and easily slide over the ends of the strut member 23, and consist of two U-shaped pieces 28, 2S, and side pieces 29, 29, riveted together as shown.
- the side pieces 29, 29, have slots 30, 30, corresponding to the bolt holes in the strut member 23 and at the lower ends are holes 31, for the purpose of receiving a pin 16 to engage the eye of a threaded rod 17 similar to that described with respect to the intermediate sections 7, 7
- Each of said adjustable members 24 are provided at their upper and outer ends with a plate 24 with a hole 25 to receive a pin l l, similar to and as described with reference to the intermediate sections 7, 7.
- the end sections 32 are composed of a riveted structural truss frame as shown, and provided with pins 33 for connecting the same to the pin seats 1, l.
- the arrangements for attachment to the adjacent intermediate 'ection may be of any other form and construction, if so desired, and forms no essential part of the present invention.
- the center section in an arch whose length is not an exact multiple of the intermediate section 7, the center section can be adjusted so that the members 2st, 2% firmly abut against the adjacent intermediate sections 7,7, as shown in Fig. 1 when the bolts 27, 27, are screwed up, thereby securely holding together said center section to receive the weight of the load when the concrete is filled in to form the arch.
- the curvature of the arch can also be easily changed and the adjustment of any particular intermediate section '2' can be readily ellected, by simply turning one, several, or all of the turnbuckles 18 to properly and uniformly distribute the load on the centering. After the concrete has hardened and the arch is self supporting, the centering can be readily removed in sections and easily transported to be again. set up.
- An intermediate section for an adjustable or variable centering to form concrete arches comprising a triangular truss having a base member, and side members having one of their ends connected to opposite ends of the base and their other ends connected to each other to form the apex of the truss, means at the ends of the base member for pivotally connecting the same to an adjoining intermediate section, a pin rigidly sup ported in said. section at the apex of the truss, and two separate and independent rods pivotally connected at one of their ends to said pin and free at the other end, and means adjustably connecting the free ends of each two adjacent rods.
- An intermediate section for an adjustble or variable centering to form concrete arches comprising a triangular tru s having a base member having pin openings at its ends, and side members having one of their ends connected to the opposite ends of the base ant their other ends connected to each other to form the apex of the truss, removable pins inserted in the openings at the ends of the base member for pivotally connecting one section to an adjoining section, a pin rigidly supported in said section at the apex of the truss, two separate and independent rods pivotally connected at one end to said pin in said apex of the truss and threaded at the other end, and means adjustably conecting the threaded ends of each two adjacent rods.
- An adjustable center section for an adjustable or variable centering to form concrete arches comprising a central strut member, an adjustable side piece adapted to be connected to each of the ends of the strut meinb r, and means for rigidly leckin g said strut member and side pieces together after having been properly adjusted with respect to each other, and means at the bottom out each of said side pieces for adjustably con necting a truss of the centering to each of said side pieces.
- An adjustable center section for an adjustable and variable centering to form con crete arcl es comprising a central strut member, an adjustable side piece adapted to slide over each ot the ends of the strut member, and fastening bolts passing through the strut member and side pieces for rigidly locking said strut member and side pieces together after having been prop-- erly adjusted with respect to each other, means at the top of each of said side pieces fer pivotahy connecting a truss of the centering to each of said side pieces, and means at the bottom of each of said pieces for adjustably connecting a truss of the centering to each of said side pieces.
Description
- H. A. LOSER. ADJUSTABLE AND VARIABLE OENTERING FOR CONCRETE ARGHES, aw. APPLICATION IILED 1'38. 18, 1913.
1,1 12,542. Patented 0015.6,1914.
Q?i%o co?) 2213: ZZZ? a, 4%
THE NORRIS PETERS CO P'HbTQ-LITHDH WASHINGTON. D. c.
TQE.
HARRY A. LOSER, OF BALTIMORE, MARYLAND.
ADJUSTABLE AND VARIABLE CENTERING FOR CONCRETE ARCHES, 850.
To all whom it may concern:
Be it known that I, HARRY A. Losnn, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Adjustable and Variable Centering for Concrete Arches, &c., of which the following is a specification.
My invention relates to adjustable and variable centering for reinforced concrete arches, bridges, culverts, tunnels and sewers, and in all places where it is necessary to use a curved supporting frame during construction work.
The objects of my invention are first, to provide a construction of centering which 1s strong and compact in form and cheaply manufactured, and at the same time be quickly assembled, adjusted in position, and removed or knocked down in the shortest time, after the concrete arch has set, and transported to be again set up with the least cost; second, to provide a series of independent and adjustable sections which cooperate with an adjustable center section, whereby an arch of any radius not necessarily a multiple of the center section, and any depth, may be quickly and cheaply constructed; third, further objects and advantages of construction which will readily appear from the detailed description of the apparatus and mode of operating the same.
The invention consists of structural characteristics and relative arrangements of the several parts as will be hereinafter more fully set forth and particularly pointed out in the appended claims.
Reference is to be had to the accompanying drawings wherein similar reference characters indicate the same parts in the several figures, in which- Figure 1 is a side elevation of the invention as it appears when assembled; Fig. 2 is a side view, partly in section, and on an enlarged scale, of two of the adjustable sections, forming the centering; Fig. 3 is an end view on an enlarged scale of an adjustable section; Fig. 4c is an enlarged side view, half in section and half in elevation, of the adjustable center section; and Fig. 5 is a sec tion taken on line VV, of Fig. 4
Referring to the drawings 1, 1, are pin seats, resting upon screws or jacks 2, 2, capable of vertical adjustment and bearlng against blocks 3, 3, capable of adjustment on upright blocks 1, 1, and held in a fast and Specification of Letters Patent.
Application filed February 18, 1913.
Patented Oct. 6, 1914.
Serial No. 749,126.
rigid position by means of horizontal wedges 5, 5, said jacks 2, 2, and upright blocks 4:, 4c, abutting against suitable piers or abutments 6, of concrete, placed in proper position before the centering is put in place and the arch is poured, and forms no part of the present invention.
The intermediate sections 7, 7, are composed of triangular trusses made preferably of base members composed of channel irons 8, 8, and side members 9, 9, composed of angle irons, rigidly connected at one end to said base members by plates 9, 9 riveted to said base and side members and at their other or apex end of the truss, to plates 10,
10. Said angle irons 9, 9, are connected and v braced together by cross pieces 11, 11, which securely hold the pieces forming the triangular trusses together in one rigid whole. The base members 8, 8, have secured to their ends plates 12, each of which is provided 7 with a round opening 13 to receive a pin 14,
and hingedly connect the said intermediate sections 7, 7 at th ends of their bases.
The plates 10 near the inner ends of angle irons 9, 9, are provided with openings 15 5 to receive pins 16 which pass through the eyes of right and left screw threaded rods 17, the ends of which are engaged by turnbuckles 18, as shown in Fig. 2. At the extreme outer end of each of the plates 10 is provided a hole 19 through which is passed a suitable rod 20 connecting the lower ends of two or more of the sections 7 7 to insure lateral rigidity, and said rod is kept from sliding through said holes 19 by a circular clamp 21 interposed between the ends of the plates 10 and encircling andfirmly gripping the rod 20. The adjustable center section shown in Figs. 1 and 5 is composed of a strut member 23 and two adjustable members 2 1, 24:, adapted to slide over the ends of the said strut member. The strut member is preferably of a hollow or box form and is composed of two pieces 25,25, U-shaped in cross section, and connected together by side pieces 26, 26, which side pieces are provided with a series of holes to receive bolts 27, 27 as shown. The adjustable members 24, 2 1, are likewise made of hollow or box form and adapted to fit and easily slide over the ends of the strut member 23, and consist of two U-shaped pieces 28, 2S, and side pieces 29, 29, riveted together as shown. The side pieces 29, 29, have slots 30, 30, corresponding to the bolt holes in the strut member 23 and at the lower ends are holes 31, for the purpose of receiving a pin 16 to engage the eye of a threaded rod 17 similar to that described with respect to the intermediate sections 7, 7 Each of said adjustable members 24: are provided at their upper and outer ends with a plate 24 with a hole 25 to receive a pin l l, similar to and as described with reference to the intermediate sections 7, 7.
The end sections 32, see Fig. 1, are composed of a riveted structural truss frame as shown, and provided with pins 33 for connecting the same to the pin seats 1, l. The arrangements for attachment to the adjacent intermediate 'ection may be of any other form and construction, if so desired, and forms no essential part of the present invention.
34 is a flooring over the top of the centering which in turn carries any suitable covering 35 to sustain the mixed concrete 36 and form a finished surface to the curved outer side of theconcrete arch, when the centering, flooring and covering are removed.
From the foregoing disclosure it will be seen that in an arch whose length is not an exact multiple of the intermediate section 7, the center section can be adjusted so that the members 2st, 2% firmly abut against the adjacent intermediate sections 7,7, as shown in Fig. 1 when the bolts 27, 27, are screwed up, thereby securely holding together said center section to receive the weight of the load when the concrete is filled in to form the arch. The curvature of the arch can also be easily changed and the adjustment of any particular intermediate section '2' can be readily ellected, by simply turning one, several, or all of the turnbuckles 18 to properly and uniformly distribute the load on the centering. After the concrete has hardened and the arch is self supporting, the centering can be readily removed in sections and easily transported to be again. set up.
lVhat I claim is 1. An intermediate section for an adjustable or variable centering to form concrete arches comprising a triangular truss having a base member, and side members having one of their ends connected to opposite ends of the base and their other ends connected to each other to form the apex of the truss, means at the ends of the base member for pivotally connecting the same to an adjoining intermediate section, a pin rigidly sup ported in said. section at the apex of the truss, and two separate and independent rods pivotally connected at one of their ends to said pin and free at the other end, and means adjustably connecting the free ends of each two adjacent rods.
2. An intermediate section for an adjustble or variable centering to form concrete arches comprising a triangular tru s having a base member having pin openings at its ends, and side members having one of their ends connected to the opposite ends of the base ant their other ends connected to each other to form the apex of the truss, removable pins inserted in the openings at the ends of the base member for pivotally connecting one section to an adjoining section, a pin rigidly supported in said section at the apex of the truss, two separate and independent rods pivotally connected at one end to said pin in said apex of the truss and threaded at the other end, and means adjustably conecting the threaded ends of each two adjacent rods.
3. An adjustable center section for an adjustable or variable centering to form concrete arches comprising a central strut member, an adjustable side piece adapted to be connected to each of the ends of the strut meinb r, and means for rigidly leckin g said strut member and side pieces together after having been properly adjusted with respect to each other, and means at the bottom out each of said side pieces for adjustably con necting a truss of the centering to each of said side pieces.
4-. An adjustable center section for an adjustable and variable centering to form con crete arcl es comprising a central strut member, an adjustable side piece adapted to slide over each ot the ends of the strut member, and fastening bolts passing through the strut member and side pieces for rigidly locking said strut member and side pieces together after having been prop-- erly adjusted with respect to each other, means at the top of each of said side pieces fer pivotahy connecting a truss of the centering to each of said side pieces, and means at the bottom of each of said pieces for adjustably connecting a truss of the centering to each of said side pieces.
In testimony whereof I a'liix my signature in presence of two witnesses,
HARRY A. LOSER.
ld itn esses Josnrn N. Cnannlon, JOHN T. Fanny.
Uopies of this patent may be obtained for five cents each, by addressing the fiommissioner of Patents,
Washington, D. G.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US74912613A US1112542A (en) | 1913-02-18 | 1913-02-18 | Adjustable and variable centering for concrete arches, &c.. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US74912613A US1112542A (en) | 1913-02-18 | 1913-02-18 | Adjustable and variable centering for concrete arches, &c.. |
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US1112542A true US1112542A (en) | 1914-10-06 |
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US74912613A Expired - Lifetime US1112542A (en) | 1913-02-18 | 1913-02-18 | Adjustable and variable centering for concrete arches, &c.. |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2642163A (en) * | 1949-04-29 | 1953-06-16 | Emmett E Mcvey | Arch form for furnace roofs |
US2687193A (en) * | 1950-08-18 | 1954-08-24 | Johann Friedrich Zwicky | Metal falsework carrier for reinforced brickwork and reinforced concrete structures |
DE895825C (en) * | 1948-10-02 | 1954-10-18 | Otto Hinze | Metallic formwork support that spans the space freely, can be folded and consists of at least two elements |
US2985264A (en) * | 1954-10-19 | 1961-05-23 | Julius G Forstmann | Form supporting girder |
US4190990A (en) * | 1976-08-06 | 1980-03-04 | Mcallister Jack G | Frame assembly |
US4641477A (en) * | 1986-01-06 | 1987-02-10 | Schleck Herman A | Adjustable modular building |
US4864796A (en) * | 1988-03-09 | 1989-09-12 | Gary Diamond | Variable polyhedral framework |
US5337531A (en) * | 1992-10-15 | 1994-08-16 | Thompson Fabricating Company, Inc. | Adjustable camber truss |
US6045114A (en) * | 1996-05-15 | 2000-04-04 | Nogami; Shinichi | Elongated, curved framework with a variable degree of curvature |
US20060059859A1 (en) * | 2004-08-05 | 2006-03-23 | Knerr Jacoby L | Arch support device |
US20110142591A1 (en) * | 2009-12-15 | 2011-06-16 | Production Resource Group L.L.C | Truss Hinge |
US9481993B2 (en) | 2011-03-15 | 2016-11-01 | Lock-Block Ltd. | Formwork for use in the construction of arched structures and a method of constructing arched structures |
US11021955B2 (en) | 2019-02-20 | 2021-06-01 | Dsi Tunneling Llc | Tunnel support system and method |
-
1913
- 1913-02-18 US US74912613A patent/US1112542A/en not_active Expired - Lifetime
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE895825C (en) * | 1948-10-02 | 1954-10-18 | Otto Hinze | Metallic formwork support that spans the space freely, can be folded and consists of at least two elements |
US2642163A (en) * | 1949-04-29 | 1953-06-16 | Emmett E Mcvey | Arch form for furnace roofs |
US2687193A (en) * | 1950-08-18 | 1954-08-24 | Johann Friedrich Zwicky | Metal falsework carrier for reinforced brickwork and reinforced concrete structures |
US2985264A (en) * | 1954-10-19 | 1961-05-23 | Julius G Forstmann | Form supporting girder |
US4190990A (en) * | 1976-08-06 | 1980-03-04 | Mcallister Jack G | Frame assembly |
US4641477A (en) * | 1986-01-06 | 1987-02-10 | Schleck Herman A | Adjustable modular building |
US4864796A (en) * | 1988-03-09 | 1989-09-12 | Gary Diamond | Variable polyhedral framework |
US5337531A (en) * | 1992-10-15 | 1994-08-16 | Thompson Fabricating Company, Inc. | Adjustable camber truss |
US6045114A (en) * | 1996-05-15 | 2000-04-04 | Nogami; Shinichi | Elongated, curved framework with a variable degree of curvature |
US20060059859A1 (en) * | 2004-08-05 | 2006-03-23 | Knerr Jacoby L | Arch support device |
US20110142591A1 (en) * | 2009-12-15 | 2011-06-16 | Production Resource Group L.L.C | Truss Hinge |
US8850774B2 (en) * | 2009-12-15 | 2014-10-07 | Production Resource Group Llc | Truss hinge for a stage truss |
US9422972B2 (en) | 2009-12-15 | 2016-08-23 | Production Resource Group, Llc | Truss hinge with variations in angular settings |
US9732511B2 (en) | 2009-12-15 | 2017-08-15 | Production Resource Group, Llc | Truss hinge with variations in angular settings |
US9957709B2 (en) | 2009-12-15 | 2018-05-01 | Production Resource Group, Llc | Truss hinge with variations in angular settings |
US9481993B2 (en) | 2011-03-15 | 2016-11-01 | Lock-Block Ltd. | Formwork for use in the construction of arched structures and a method of constructing arched structures |
US20170051496A1 (en) * | 2011-03-15 | 2017-02-23 | Lock-Block Ltd. | Formwork for use in the construction of arched structures and method of constructing arched structures |
US9828760B2 (en) * | 2011-03-15 | 2017-11-28 | Lock-Block Ltd. | Formwork for use in the construction of arched structures and method of constructing arched structures |
US11021955B2 (en) | 2019-02-20 | 2021-06-01 | Dsi Tunneling Llc | Tunnel support system and method |
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