US3309971A - Extensible levelling apparatus to be used in connection with finishers for the spreading of bituminous conglomerates - Google Patents

Extensible levelling apparatus to be used in connection with finishers for the spreading of bituminous conglomerates Download PDF

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Publication number
US3309971A
US3309971A US369809A US36980964A US3309971A US 3309971 A US3309971 A US 3309971A US 369809 A US369809 A US 369809A US 36980964 A US36980964 A US 36980964A US 3309971 A US3309971 A US 3309971A
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US
United States
Prior art keywords
screed
vehicle body
extensions
side wall
top wall
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Expired - Lifetime
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US369809A
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English (en)
Inventor
Domenighetti Domenico
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Individual
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • E01C19/4833—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with tamping or vibrating means for consolidating or finishing, e.g. immersed vibrators, with or without non-vibratory or non-percussive pressing or smoothing means
    • E01C19/4853—Apparatus designed for railless operation, e.g. crawler-mounted, provided with portable trackway arrangements
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/18—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
    • E01C19/182—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect solely for depositing
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/14—Extendable screeds

Definitions

  • Leveling machines of the type with which this invention is concerned are vehicles equipped with screeds which are moved over the surface of the soft paving material to level the same. If the screed is fixedly attached to the vehicle, the bouncing movement of the latter, as it travels over yet irregular surfaces, causes corresponding oscillations of the screed, and waves in the pavement surface.
  • An object of the invention is the provision of a road leveling apparatus in which the vertical positions of the screed is not significantly affected by vertical movements of the vehicle to which the screed is attached.
  • the width of the vehicle is normally limited by law to a width smaller than the width of a lane in the road paved. It is desirable to level the paving in one operation over the full width of the lane. This requires a screed extending laterally beyond the width of the vehicle permissible during travel of the latter to a place of operation. Extensible screeds have been known heretofore, but are complex and difficult to handle.
  • Another object of this invention is the provision of a laterally extensible screed which is simple in its construction, and which causes the extended portions to be locked in the operative and inoperative positions in a simple manner.
  • FIG. 1 shows the machine in side elevation
  • FIG. 2 shows it in front elevation
  • FIG. 3 is a plan view of the machine.
  • the main body of a vehicle is supported on four pneumatic wheels 3 which are driven by a non-illustrated motor.
  • a forward extension of the body 10 is supported on wheels 2 which may be steered.
  • Bumpers 1 on the front end of the vehicle permit a truck carrying bituminous material to be pushed ahead of the leveling machine.
  • the forward extension of the body 10 carries a hopper 7 downwardly open toward a conveyor 9 which travels rearward from the hopper through a tunnel (not shown) in the body 10 toward screw feeders 4.
  • the feeders rotate about an axis perpendicular to the normal direction of vehicle movement and distribute the bituminous material discharged from the hopper 7 over the width of the lane to be paved.
  • the screw feeders may be extended in a known manner between a retracted position and an operative position illustrated in broken lines in FIG. 3, in which they laterally project beyond the vehicle body 10.
  • a box-shaped screed 5 is mounted on the vehicle body 10 behind the feeders 4 on the rear ends of two arms 12 whose front ends are attached to the foreward portion of the main body 10 by respective pivots 11.
  • the screed 5 has a flat bottom face 13 which is elongated transversely of the direction of vehicle movement, and a front face which extends upwardly from the bottom face 13.
  • top of the screed 5 slopes obliquely in a downward and backward direction.
  • Hinges 14 at the two lateral ends of the screed top respectively carry box-shaped screed extensions 8 which may be swung on the hinges 14 between the inoperative position shown in FIGS. 1 and 3 and the operative position illustrated in FIG. 2.
  • the screed extensions In the inoperative position, the screed extensions rest by gravity on the inclined top face of the screed 5, and their vertical side faces extend in common longitudinal planes with respective side faces of the screed 5 and pivot axes of the hinges 14.
  • the screed extensions 8 are withdrawn within the overall width of the vehicle in the inoperative position shown in FIG. 3 in fully drawn lines.
  • the inoperative position is rearwardly offset from the operative position shown in broken lines.
  • only one screed extension 8 may be in the operative position so that three operating widths are available in the leveling machine of the invention by swinging the extensions 8 about the pivot axes of the hinges 14.
  • a leveling apparatus for road pavings comprising in combination, a vehicle body having front and rear ends, a box-like screed carried by and disposed at the rear end of said vehicle body, said screed being horizontally elongated in a direction transverse of the vehicle body and including a pavement engaging bottom, a front wall, a pair of side walls and .a top wall member, the transverse length of said screed corresponding substantially to the width of the vehicle body, a pair of box-like screed extensions operatively disposed at the respective opposite sides of said screed and projecting laterally outwardly beyond sides of the vehicle body, each of said screed extensions including a pavement engaging bottom, a front wall and an inner side wall, and hinge means connecting the inner side wall of each screed extension to the adjacent side wall of the screed at the junction of the screed side wall with the screed top wall member, whereby said screed extensions may be hingedly swung from their operative position beyond sides of the vehicle body to an inoperative position wherein they are superposed on said screed

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Wind Motors (AREA)
US369809A 1963-08-05 1964-05-25 Extensible levelling apparatus to be used in connection with finishers for the spreading of bituminous conglomerates Expired - Lifetime US3309971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH978963A CH389668A (it) 1963-08-05 1963-08-05 Apparecchiatura livellatrice per macchina pavimentatrice stradale

Publications (1)

Publication Number Publication Date
US3309971A true US3309971A (en) 1967-03-21

Family

ID=4355656

Family Applications (1)

Application Number Title Priority Date Filing Date
US369809A Expired - Lifetime US3309971A (en) 1963-08-05 1964-05-25 Extensible levelling apparatus to be used in connection with finishers for the spreading of bituminous conglomerates

Country Status (7)

Country Link
US (1) US3309971A (it)
BE (1) BE646564A (it)
CH (1) CH389668A (it)
DE (1) DE1459696A1 (it)
ES (1) ES298669A1 (it)
FR (1) FR1386957A (it)
GB (1) GB1031692A (it)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415173A (en) * 1967-08-21 1968-12-10 Rogers Construction Inc Extension attachment for a paving machine
US4655633A (en) * 1985-09-23 1987-04-07 David W. Somero Screeding apparatus and method
US4930935A (en) * 1988-12-29 1990-06-05 David W. Somero Screeding apparatus and method
US6203244B1 (en) 1998-01-15 2001-03-20 Van-Boh Systems, Inc. Screeding apparatus
US20030161684A1 (en) * 2002-02-27 2003-08-28 Quenzi Philip J. Apparatus and method for subgrade preparation
US20060008323A1 (en) * 2004-07-06 2006-01-12 Torvinen Jeffrey W Apparatus and method for subgrade preparation
US7121763B1 (en) * 2004-09-10 2006-10-17 Roadtec, Inc. Folding end gate for screed assembly
CN113338138A (zh) * 2021-05-31 2021-09-03 江苏全心建设有限公司 市政路面用修复装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10040761C1 (de) * 2000-08-19 2001-12-06 Abg Allg Baumaschinen Gmbh Einbaubohle für einen Straßenfertiger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175511A (en) * 1939-02-06 1939-10-10 Charles S Wahlstrom Seal coating machine for highways
US2796811A (en) * 1953-06-03 1957-06-25 Barber Greene Co Machine for laying roads
US2948202A (en) * 1957-07-03 1960-08-09 Jaeger Machine Co Screed structure
US3095788A (en) * 1953-09-08 1963-07-02 Odell Robert Spreader and hitch therefor
US3155021A (en) * 1961-06-15 1964-11-03 Barber Greene Co Extensions for bituminous finishers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175511A (en) * 1939-02-06 1939-10-10 Charles S Wahlstrom Seal coating machine for highways
US2796811A (en) * 1953-06-03 1957-06-25 Barber Greene Co Machine for laying roads
US3095788A (en) * 1953-09-08 1963-07-02 Odell Robert Spreader and hitch therefor
US2948202A (en) * 1957-07-03 1960-08-09 Jaeger Machine Co Screed structure
US3155021A (en) * 1961-06-15 1964-11-03 Barber Greene Co Extensions for bituminous finishers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415173A (en) * 1967-08-21 1968-12-10 Rogers Construction Inc Extension attachment for a paving machine
US4655633A (en) * 1985-09-23 1987-04-07 David W. Somero Screeding apparatus and method
US4930935A (en) * 1988-12-29 1990-06-05 David W. Somero Screeding apparatus and method
US6203244B1 (en) 1998-01-15 2001-03-20 Van-Boh Systems, Inc. Screeding apparatus
US20030161684A1 (en) * 2002-02-27 2003-08-28 Quenzi Philip J. Apparatus and method for subgrade preparation
US20060008323A1 (en) * 2004-07-06 2006-01-12 Torvinen Jeffrey W Apparatus and method for subgrade preparation
US7311466B2 (en) 2004-07-06 2007-12-25 Somero Enterprises, Inc. Apparatus and method for subgrade preparation
US7121763B1 (en) * 2004-09-10 2006-10-17 Roadtec, Inc. Folding end gate for screed assembly
CN113338138A (zh) * 2021-05-31 2021-09-03 江苏全心建设有限公司 市政路面用修复装置

Also Published As

Publication number Publication date
ES298669A1 (es) 1964-08-16
CH389668A (it) 1965-03-31
FR1386957A (fr) 1965-01-22
GB1031692A (en) 1966-06-02
BE646564A (it) 1964-07-31
DE1459696A1 (de) 1968-12-05

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