CA1043611A - Gutter attachment for asphalt spreader - Google Patents
Gutter attachment for asphalt spreaderInfo
- Publication number
- CA1043611A CA1043611A CA278,926A CA278926A CA1043611A CA 1043611 A CA1043611 A CA 1043611A CA 278926 A CA278926 A CA 278926A CA 1043611 A CA1043611 A CA 1043611A
- Authority
- CA
- Canada
- Prior art keywords
- attachment
- gutter
- secured
- screed
- machine
- 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
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- Road Paving Machines (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An attachment for one side of an asphalt paving machine to permit laying of a gutter adjacent to and integral with a roadway surface at the same time as the roadway surface is being paved. The device comprises an extension plate to be vertically oriented in alignment with the screed of the asphalt paving machine and means associated with the extension plate to secure it in this position The extension plate has a rearwardly curved, L-shaped base extending from side to side along the bottom of the plate for smoothing the asphalt. An end gate is provided at the outer end of the attachment to control the spread of asphalt to the required width. The attachment is intended to be bolted to an automatic screed extension or to the side of the screed of the asphalt paving machine, to replace the screed end gate.
An attachment for one side of an asphalt paving machine to permit laying of a gutter adjacent to and integral with a roadway surface at the same time as the roadway surface is being paved. The device comprises an extension plate to be vertically oriented in alignment with the screed of the asphalt paving machine and means associated with the extension plate to secure it in this position The extension plate has a rearwardly curved, L-shaped base extending from side to side along the bottom of the plate for smoothing the asphalt. An end gate is provided at the outer end of the attachment to control the spread of asphalt to the required width. The attachment is intended to be bolted to an automatic screed extension or to the side of the screed of the asphalt paving machine, to replace the screed end gate.
Description
BACKGROUND PF THE INVENTION
This invention relates generally to an attachment for an asphalt paving machlne and more specifically to an attachment for such a machine which will permit the laying of a gutter ad~acent to and integral with a roadway surface which is being simultaneously laid by the machine.
In asphalt paving operations requiring a gutter strip ad~acent to and co-extensive with the roadway surface, it is traditional to pave the roadway first and in a separate operation pave the narrow gutter beside it.
Such a second operation adds considerably to the expense of the paving opera-tion not only in respect of time taken but also in respect of equipment and energy used.
The gutter forming operation is a fairly precise one since the width and cross-sectional profile of gutters heside highways are carefully controlled by Government regulations. In Ontario, for example, regulations often require that the gutter be thirty-two inches in width and have a cross-sectional profile such that the half of the gutter nearest the roadway is downwardly sloped, away from the roadway, two inches oyer its width, and the other half of the gutter is then upwardly sloped from the lowest point of the first half a total of six inches over its wldth. This gives an uneyen "V"-shaped cross-sectional profile or contour to the gutter. The first, downward slope is relatively gradual to prevent a driver, who may have accidentaly steered a wheel onto the gutter from losing control of the car bef~re he can return that wheel to the normal surface of the roadway. The outer, upward slope of the gutter i9 steeper to minimize the spillover of water which may be running along the gutter, over the outer edge of the gutter down into the shoulders.
When this occurs, erosion of the shoulders results with consequent undermining of the roadbed and damage to the edge surfaces of the roadway.
Many attachments for asphalt spreading machines have been proposed in the prior art for a variety of purpQses. Indeed, the automatic screed extension, to which the attachment of the present invention may be attached, is itself an attach~ent to such machine. North American asphalt paving machines ;~ are customarily made for laying ten foot wide strips of asphalt. In order to ,''.
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pave half the width of a twenty-two foot or twenty-four foot wide roadway, however, it i8 necessary to provide for an extension of the strip which the machines can pave. This is done by means of an automatic extension which is secured to and adjustable sideways on the original screed of the paving machine.
Using such an extension, it is possible then to pave the required width of one-half the road surface, one-half the road surface normally being paved at .,:
one time in an asphalt highway paving pro~ect. Such a screed extension is described and illustrated in Canadian Patent No. 779,653 of J.D. Layton, issued March 5, 1968, this extension being used on a paver to be towed behind a dump truck. Curb and gutter paving machines, of general background interest, are described and illustrated in Canadian Patents No. 502,483 of E.S. Clark, et al., issued May 18, 1954; Canadian Patent No. 596,171 of W.E. Canfield, et al., issued April 12, 1960 and Canadian Patent No. 768,4~8 of J.Sigmund, issued October 3, 1968.
Unlted States Patent No. 3,680,451 of R. D. Birtchet, issued August 1, 1972 descrlbes a plvotable wing attachment for an automatlc screed extenslon whlch enables elther, but not a combination of, upward or down~ard sloplng o~
a margln of the roadway durlng paving. The wing is made up of an elongsted blade havlng a substantially straight and horizontal lower edge and a second, shorter elongated blade extending parallel to the first blade but cut at an angle so that the departure point of the sloping portion relative to the horizontal portion of the roadway remains the same when the angle of the main blade is changed. The Birtchet device however is not intended to be an attachment for formlng a gutter beslde a roadway and indeed would be unable to operate as such since, if it were modlfied to provlde both downward and upward slopes to form an appropriate gutter, the device w~uld be unable to provide a sufflcient slope to the outslde portion of the gutter, i.e. the backing, to satisfy Government requirements. The reason for this is that the screed backing, in order to provide adequate support for the device, must be so low that only a very limited upward angle could be achie~ed. In addition, such attachment is not readily movable since the piyot bolt, being positioned so close to the asphalt being spread, would become extremely hot and di~ficult to work during ~o~
the paving operation.
It i5 an object of the present inventian to provide an Attachment for an asphalt paving machine which may be readily attached or detached there-from, which will enable laying of a gutter simultaneously with the laying of t~e roadway surface. It is a further object of the invention to provide an attachment which will enable laying of a gutter integral with a roadway surface and having a cross-sectional profile complying with Government standards and regulations.
In accordance with the invention such an attachment ls provided for one side of an asphalt paving machine, whlch machine i8 provlded with a draw arm, screw auger and screed, to permit laying of a gutter ad~acent to and integral with a roadway surface which is simultaneously laid. The attachment co~prlses a flat extension plate for vertical orientation, the plate having opposite sides and a top and bottom, with appropriate supports secured at each side. Means are associated with the extension plate to easily and releasably secure it ln this vertical orientatlon, parallel to and sllgned with the screed. A rearwardly curved base extends from side to side along the bottom of the plate, for example in the shape of a wide "V", to confon~ to the desired cross-sectional profile shape of the gutter, the attachment being attachable v to the asphalt paving machine 80 that the bottom portion of the base nearest the screed when the attachment is in position on the machine is more or less flush with the proxlmate portion of the bottom of the screed, and 80 that the apex of the "V" of the base is substantially below the bottom of the screed.
~ It is preferred that the base of the extension plate be of uneven "V"
;., shape and, in one construction which would form a gutter according to acceptable Government standards, would have a downward slope of about two inches, over a sixteen inch width of the plate, to a point away from the side securable to the asphalt paving machine, and an upward slope of about six inches, over a sixteen inch width, continuing from that point in that same direction. By providing angle iron supports at each side of the extension plate, with the support to be secured to the asphalt paving ~achine having aPpropriately i, '" ' ' ' ' ' " ' ' ' ' ' ' ' . ~ !. ~
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positioned cut-away channels for receiving bolts, a readlly attachable or detachable gutter paving device is provided. Preferably the bolts to secure the extension plate to the asphalt paving machine are the same bolts which , normally secure the paving machine end gate on the one side of the machine, , that end gate being removed or rotated out of the way when the attachment in question is used.
In operation on the-machine, it may be desirable to have a screw auger extension to ensure spreading of asphalt into the region in front of the attachment and within the attachment end gate. ~ roller of appropriate con-~- lO tour, dragged behind the asphalt paving machine in alignment with the attach-ment can simultaneously provide the appropriate rolling of the asphalt gutter.
It will be understood that because of ~he simple means of attachment of this device to the asphalt paving machine, the device may be made 90 that lt can be appropriately attached to virtually any make of asphalt paving machine, with little or no machining or alteration of the structure of the machlne. Of course, depending upon which side of the machlne the attachment 18 to be secured, a "left hand" or "right hand" attachment is provided.
BRIEF DESCRIPTION OF THE DRAWINGS
; Other ob~ects and advantages of the invention will become apparent l 20 upon reading the following detailed description and upon referring to the -, drawings in which:
,~ Figure 1 is a perspective YieW of the right rear side portion of an . ~,, ,- asphalt paving machine to which has been secured an attachment according to the present invention;
Figure 2 is a sectional view of the attachment al,ong line II-II in Figure l;
Figure 3 is a front yie~ of an attachment according to Figure 1, but intended for attachment to the other slde of the paying machine;
`~ Figure 4 is a front view of the attachment of Figure 3 hav,ing additional-ly spacers which perm~t minor ad~ustment of the orientation of the attachment in position on the asphalt paving machine.
In the drawings s,imilar features ha,ve been given sim,il~r reference ,,/~ numerals.
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While the invention will be described in connection with an example embodiments, it will be understood that it is not intended to limit the inven-tion to these embodiments. On the contrary it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
DETAILED DESCRIPTION OF T~E INVENTION
Turning first to Figure 1, there is shown an attachment 2 according to the present invention secured to the right side of an asphalt paving machine 4, the machine having screed 6, screw auger 8 and draw arm lO as parts thereof.
Attachment 2 has extension plate 12 which is vertically aligned ad~acent to screed 6. To the sldes of extension plate 12 are secured vertical angle irons 14 and 16. Bolts 18 and nuts 19 (Figures 3, 4) secure angle iron 14 and attachment 2 to paving machine 4. Cut-outs 20, as can be seen in Figure 2, are appropriately positioned in angle iron 14 to receive the stems of bolts 18 80 that the bolts used to secure the end gate 22 of screed 6 (or the automatlc screed extension where one is used) can be used. In such instance, endgate 22 o the 6creed 6 is either removed (Pigures 3 and 4) or, as in Figure 1, by the use of appropriate cut-outs 23 in the end gate, that 8ate is plvoted out of the way when installing attachment 2.
Extending along the bottom of plate 12, from side to side is base 24, rearwardly curved as can be seen in Figure 2. The base has a "V" shape, when viewed from front or back, formed to give the desired shape of the gutter.
The bottom portion of the base nearest the screed, when the attachment is se-cured in posltion on the machine i8 more or less flush with the bottom of screed 6, as seen in Figure 3.
Turning to Figure 3, the extension plate illustrated is deslgned to provide a gutter to satisfy Government regulations for example requiring a i gutter thirty-two inches wide, with a first base section 24a downwardly sloped two inches over half this width, and a second half section 24b rising six inches to form the gutter backing and prevent water fro~ spilling over the ~` edge of the gutter onto the shoulder of the road and causing erosion. End gate 26 is secured to angle iron 16 to ensure spreading of asphalt to the ., - 5 _ ~(~4~
required width in laying the gutter, and preferably e~tends below the adjacent portion o~ the base 24 at least a suf~icient distance to ensure proper depth of asphalt formed on the corresponding outer shoulder of the gutter. In the extension plate of these dimensions 8ate 26 may be a flat plate of steel approximately three-eighth inches thick, thirty-two inches long and fourteen inches wide, bolted onto angle iron 16 so that approximately twenty inches of this plate extends in front of extension plate 12 to control the width of asphalt laid, and six inches of this end 8ate 26 extends below the portion of base 24 adjacent thereto.
Chain 28 provides additional gupport to the att~chment 2 as it is pulled along the side machine 4, extending between draw arm 10 and angle iron 16.
As illustrated in Figure 4, a spacer 30 may be in$erted on bolt 18 ; between angle iron 14 and support 32 on the machine to incline the plate.
Thls permlts llmlted alteration of the hei8ht of the outside edge of the gutter and of the Rlope of the surfaces of the gutter formed by the device.
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~ For lnstance, a three~eighth inch lower spscer would elevate the outer ~houlder ,~ of the gutter to ~even to eight lnche~ from six based on the dimen~ions referred to.
As shown in Figure 1, a gutter roller 34 of appropriate profile may be dragged behind the attachment to roll the gutter once the asphalt has been laid in the appropriate amount and form.
To remove the gutter attachment, once a paving operation is ended or when a gutter is not required, all that need be done i9 to loosen bolts 18 and ~` nuts 19 on angle iron 14, slide attachment 2 off of the bolts, swing ~creed end gate 11 back into position, (or where it wa~ completely removed, replace : i-t it) and tighten bolts 18. This can be carried out in a very few minutes.
¦ If necessary, extension 40 (seen in cbain line in ~igure 3~ may be ;~ added to the end of screw auger 8 to ensure pr~per deli~ery of asphalt material in front of extens~on plate 12 for paving.
~ It will be noted, from ~igure 2, that base 24 is L-shaped and rounded j at the bend in the "L". This enables smooth spreading and laying of the i.;
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asphalt gutter. Of course, since the asphalt for the road surface and for the gutter is spread and paved at the one time, the asphalt gutter is integrally bound with the roadway.
Thus there has been provided in Accordance with the invention an attachment for an asphalt paving machine for laying a gutter that fully satis-fies the objects, aims and advantages set forth aboYe. While the invention has been described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in llght of the foregoing descriptlon. Accord-ingly lt is intedned to embrace all such alternatives, madifications and varlatio=~ a~ eall wlthin the apirit and broad 9cope of the appeDded clai=s.
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This invention relates generally to an attachment for an asphalt paving machlne and more specifically to an attachment for such a machine which will permit the laying of a gutter ad~acent to and integral with a roadway surface which is being simultaneously laid by the machine.
In asphalt paving operations requiring a gutter strip ad~acent to and co-extensive with the roadway surface, it is traditional to pave the roadway first and in a separate operation pave the narrow gutter beside it.
Such a second operation adds considerably to the expense of the paving opera-tion not only in respect of time taken but also in respect of equipment and energy used.
The gutter forming operation is a fairly precise one since the width and cross-sectional profile of gutters heside highways are carefully controlled by Government regulations. In Ontario, for example, regulations often require that the gutter be thirty-two inches in width and have a cross-sectional profile such that the half of the gutter nearest the roadway is downwardly sloped, away from the roadway, two inches oyer its width, and the other half of the gutter is then upwardly sloped from the lowest point of the first half a total of six inches over its wldth. This gives an uneyen "V"-shaped cross-sectional profile or contour to the gutter. The first, downward slope is relatively gradual to prevent a driver, who may have accidentaly steered a wheel onto the gutter from losing control of the car bef~re he can return that wheel to the normal surface of the roadway. The outer, upward slope of the gutter i9 steeper to minimize the spillover of water which may be running along the gutter, over the outer edge of the gutter down into the shoulders.
When this occurs, erosion of the shoulders results with consequent undermining of the roadbed and damage to the edge surfaces of the roadway.
Many attachments for asphalt spreading machines have been proposed in the prior art for a variety of purpQses. Indeed, the automatic screed extension, to which the attachment of the present invention may be attached, is itself an attach~ent to such machine. North American asphalt paving machines ;~ are customarily made for laying ten foot wide strips of asphalt. In order to ,''.
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.' .. : , . . . . . .
104~
pave half the width of a twenty-two foot or twenty-four foot wide roadway, however, it i8 necessary to provide for an extension of the strip which the machines can pave. This is done by means of an automatic extension which is secured to and adjustable sideways on the original screed of the paving machine.
Using such an extension, it is possible then to pave the required width of one-half the road surface, one-half the road surface normally being paved at .,:
one time in an asphalt highway paving pro~ect. Such a screed extension is described and illustrated in Canadian Patent No. 779,653 of J.D. Layton, issued March 5, 1968, this extension being used on a paver to be towed behind a dump truck. Curb and gutter paving machines, of general background interest, are described and illustrated in Canadian Patents No. 502,483 of E.S. Clark, et al., issued May 18, 1954; Canadian Patent No. 596,171 of W.E. Canfield, et al., issued April 12, 1960 and Canadian Patent No. 768,4~8 of J.Sigmund, issued October 3, 1968.
Unlted States Patent No. 3,680,451 of R. D. Birtchet, issued August 1, 1972 descrlbes a plvotable wing attachment for an automatlc screed extenslon whlch enables elther, but not a combination of, upward or down~ard sloplng o~
a margln of the roadway durlng paving. The wing is made up of an elongsted blade havlng a substantially straight and horizontal lower edge and a second, shorter elongated blade extending parallel to the first blade but cut at an angle so that the departure point of the sloping portion relative to the horizontal portion of the roadway remains the same when the angle of the main blade is changed. The Birtchet device however is not intended to be an attachment for formlng a gutter beslde a roadway and indeed would be unable to operate as such since, if it were modlfied to provlde both downward and upward slopes to form an appropriate gutter, the device w~uld be unable to provide a sufflcient slope to the outslde portion of the gutter, i.e. the backing, to satisfy Government requirements. The reason for this is that the screed backing, in order to provide adequate support for the device, must be so low that only a very limited upward angle could be achie~ed. In addition, such attachment is not readily movable since the piyot bolt, being positioned so close to the asphalt being spread, would become extremely hot and di~ficult to work during ~o~
the paving operation.
It i5 an object of the present inventian to provide an Attachment for an asphalt paving machine which may be readily attached or detached there-from, which will enable laying of a gutter simultaneously with the laying of t~e roadway surface. It is a further object of the invention to provide an attachment which will enable laying of a gutter integral with a roadway surface and having a cross-sectional profile complying with Government standards and regulations.
In accordance with the invention such an attachment ls provided for one side of an asphalt paving machine, whlch machine i8 provlded with a draw arm, screw auger and screed, to permit laying of a gutter ad~acent to and integral with a roadway surface which is simultaneously laid. The attachment co~prlses a flat extension plate for vertical orientation, the plate having opposite sides and a top and bottom, with appropriate supports secured at each side. Means are associated with the extension plate to easily and releasably secure it ln this vertical orientatlon, parallel to and sllgned with the screed. A rearwardly curved base extends from side to side along the bottom of the plate, for example in the shape of a wide "V", to confon~ to the desired cross-sectional profile shape of the gutter, the attachment being attachable v to the asphalt paving machine 80 that the bottom portion of the base nearest the screed when the attachment is in position on the machine is more or less flush with the proxlmate portion of the bottom of the screed, and 80 that the apex of the "V" of the base is substantially below the bottom of the screed.
~ It is preferred that the base of the extension plate be of uneven "V"
;., shape and, in one construction which would form a gutter according to acceptable Government standards, would have a downward slope of about two inches, over a sixteen inch width of the plate, to a point away from the side securable to the asphalt paving machine, and an upward slope of about six inches, over a sixteen inch width, continuing from that point in that same direction. By providing angle iron supports at each side of the extension plate, with the support to be secured to the asphalt paving ~achine having aPpropriately i, '" ' ' ' ' ' " ' ' ' ' ' ' ' . ~ !. ~
, '~' ' . ' , : ' . . ' ' .
lU4~
positioned cut-away channels for receiving bolts, a readlly attachable or detachable gutter paving device is provided. Preferably the bolts to secure the extension plate to the asphalt paving machine are the same bolts which , normally secure the paving machine end gate on the one side of the machine, , that end gate being removed or rotated out of the way when the attachment in question is used.
In operation on the-machine, it may be desirable to have a screw auger extension to ensure spreading of asphalt into the region in front of the attachment and within the attachment end gate. ~ roller of appropriate con-~- lO tour, dragged behind the asphalt paving machine in alignment with the attach-ment can simultaneously provide the appropriate rolling of the asphalt gutter.
It will be understood that because of ~he simple means of attachment of this device to the asphalt paving machine, the device may be made 90 that lt can be appropriately attached to virtually any make of asphalt paving machine, with little or no machining or alteration of the structure of the machlne. Of course, depending upon which side of the machlne the attachment 18 to be secured, a "left hand" or "right hand" attachment is provided.
BRIEF DESCRIPTION OF THE DRAWINGS
; Other ob~ects and advantages of the invention will become apparent l 20 upon reading the following detailed description and upon referring to the -, drawings in which:
,~ Figure 1 is a perspective YieW of the right rear side portion of an . ~,, ,- asphalt paving machine to which has been secured an attachment according to the present invention;
Figure 2 is a sectional view of the attachment al,ong line II-II in Figure l;
Figure 3 is a front yie~ of an attachment according to Figure 1, but intended for attachment to the other slde of the paying machine;
`~ Figure 4 is a front view of the attachment of Figure 3 hav,ing additional-ly spacers which perm~t minor ad~ustment of the orientation of the attachment in position on the asphalt paving machine.
In the drawings s,imilar features ha,ve been given sim,il~r reference ,,/~ numerals.
, -- 4 --..
While the invention will be described in connection with an example embodiments, it will be understood that it is not intended to limit the inven-tion to these embodiments. On the contrary it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
DETAILED DESCRIPTION OF T~E INVENTION
Turning first to Figure 1, there is shown an attachment 2 according to the present invention secured to the right side of an asphalt paving machine 4, the machine having screed 6, screw auger 8 and draw arm lO as parts thereof.
Attachment 2 has extension plate 12 which is vertically aligned ad~acent to screed 6. To the sldes of extension plate 12 are secured vertical angle irons 14 and 16. Bolts 18 and nuts 19 (Figures 3, 4) secure angle iron 14 and attachment 2 to paving machine 4. Cut-outs 20, as can be seen in Figure 2, are appropriately positioned in angle iron 14 to receive the stems of bolts 18 80 that the bolts used to secure the end gate 22 of screed 6 (or the automatlc screed extension where one is used) can be used. In such instance, endgate 22 o the 6creed 6 is either removed (Pigures 3 and 4) or, as in Figure 1, by the use of appropriate cut-outs 23 in the end gate, that 8ate is plvoted out of the way when installing attachment 2.
Extending along the bottom of plate 12, from side to side is base 24, rearwardly curved as can be seen in Figure 2. The base has a "V" shape, when viewed from front or back, formed to give the desired shape of the gutter.
The bottom portion of the base nearest the screed, when the attachment is se-cured in posltion on the machine i8 more or less flush with the bottom of screed 6, as seen in Figure 3.
Turning to Figure 3, the extension plate illustrated is deslgned to provide a gutter to satisfy Government regulations for example requiring a i gutter thirty-two inches wide, with a first base section 24a downwardly sloped two inches over half this width, and a second half section 24b rising six inches to form the gutter backing and prevent water fro~ spilling over the ~` edge of the gutter onto the shoulder of the road and causing erosion. End gate 26 is secured to angle iron 16 to ensure spreading of asphalt to the ., - 5 _ ~(~4~
required width in laying the gutter, and preferably e~tends below the adjacent portion o~ the base 24 at least a suf~icient distance to ensure proper depth of asphalt formed on the corresponding outer shoulder of the gutter. In the extension plate of these dimensions 8ate 26 may be a flat plate of steel approximately three-eighth inches thick, thirty-two inches long and fourteen inches wide, bolted onto angle iron 16 so that approximately twenty inches of this plate extends in front of extension plate 12 to control the width of asphalt laid, and six inches of this end 8ate 26 extends below the portion of base 24 adjacent thereto.
Chain 28 provides additional gupport to the att~chment 2 as it is pulled along the side machine 4, extending between draw arm 10 and angle iron 16.
As illustrated in Figure 4, a spacer 30 may be in$erted on bolt 18 ; between angle iron 14 and support 32 on the machine to incline the plate.
Thls permlts llmlted alteration of the hei8ht of the outside edge of the gutter and of the Rlope of the surfaces of the gutter formed by the device.
'"
~ For lnstance, a three~eighth inch lower spscer would elevate the outer ~houlder ,~ of the gutter to ~even to eight lnche~ from six based on the dimen~ions referred to.
As shown in Figure 1, a gutter roller 34 of appropriate profile may be dragged behind the attachment to roll the gutter once the asphalt has been laid in the appropriate amount and form.
To remove the gutter attachment, once a paving operation is ended or when a gutter is not required, all that need be done i9 to loosen bolts 18 and ~` nuts 19 on angle iron 14, slide attachment 2 off of the bolts, swing ~creed end gate 11 back into position, (or where it wa~ completely removed, replace : i-t it) and tighten bolts 18. This can be carried out in a very few minutes.
¦ If necessary, extension 40 (seen in cbain line in ~igure 3~ may be ;~ added to the end of screw auger 8 to ensure pr~per deli~ery of asphalt material in front of extens~on plate 12 for paving.
~ It will be noted, from ~igure 2, that base 24 is L-shaped and rounded j at the bend in the "L". This enables smooth spreading and laying of the i.;
1~3~ ~ ~
asphalt gutter. Of course, since the asphalt for the road surface and for the gutter is spread and paved at the one time, the asphalt gutter is integrally bound with the roadway.
Thus there has been provided in Accordance with the invention an attachment for an asphalt paving machine for laying a gutter that fully satis-fies the objects, aims and advantages set forth aboYe. While the invention has been described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in llght of the foregoing descriptlon. Accord-ingly lt is intedned to embrace all such alternatives, madifications and varlatio=~ a~ eall wlthin the apirit and broad 9cope of the appeDded clai=s.
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Claims (12)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An attachment for one side of an asphalt paving machine, the paving machine having draw arms, a screw auger and a screed, to permit the laying of a gutter adjacent to and integral with a roadway surface being simultaneously laid, the attachment comprising:
(a) a flat extension plate for vertical orientation, the plate having top and bottom and opposite sides, and supports secured to each side thereof;
(b) means associated with one of the supports to releasably secure the plate in vertical orientation parallel to and aligned with the screed;
(c) a rearwardly curved base secured to and extending from side to side along the bottom of the extension plate to conform to the desired cross-sectional profile shape of the gutter, the bottom of the portion of the base nearest the screed, when the attachment is secured in position to the machine, being more or less flush with the bottom of the screed;
(d) an end gate secured to the outer support to ensure proper width and edging of asphalt gutter.
(a) a flat extension plate for vertical orientation, the plate having top and bottom and opposite sides, and supports secured to each side thereof;
(b) means associated with one of the supports to releasably secure the plate in vertical orientation parallel to and aligned with the screed;
(c) a rearwardly curved base secured to and extending from side to side along the bottom of the extension plate to conform to the desired cross-sectional profile shape of the gutter, the bottom of the portion of the base nearest the screed, when the attachment is secured in position to the machine, being more or less flush with the bottom of the screed;
(d) an end gate secured to the outer support to ensure proper width and edging of asphalt gutter.
2. An attachment according to claim 1, wherein the base is in the shape of a wide "V", and the apex of this "V" is substantially below the bottom of the screed when the attachment is secured in position to the machine.
3. An attachment according to claim 2, wherein the extension plate is about thirty-two inches from side to side, and, with the extension plate in vertical orientation to be secured to the paving machine, the base slopes down-wardly about two inches over about half the width of the plate, and extends upwardly about six inches over the remaining half, of the width of the plate to the outer support.
4. An attachment according to claim 2, wherein the slope of the half of the base to be farthest from the machine is about two to three tires as great as the slope of the half of the base to be nearest the machine.
5. An attachment according to claim 4, wherein said supports comprise vertical angle irons secured to each side of the extension plate.
6. An attachment according to claim 5, wherein bolt means are provided to secure one of the angle irons to a co-operating support means secured to one side of the paving machine.
7. An attachment according to claim 6, further comprising spacer means associated with the bolt means and positioned between the angle iron and the paving machine support means whereby the height of the outside edge of the gutter formed by the machine and the inclination of the surfaces of the gutter formed by the attachment may be altered.
8. An attachment according to claim 1, further comprising a chain to be secured to and extend from the extension plate to the side of the adjacent draw arm of the paving machine, in advance of the attachment, to provide further support for the attachment.
9. An attachment according to claim 2 or 3, wherein the end gate 18 made of steel approximately three-eighth inches thick by thirty-two inches long by fourteen inches wide and is secured to the outer support of the attach-ment so that approximately twenty inches of the end plate extends forwardly of the extension plate, the end plate extending downwardly below the bottom corner of the base proximate thereto by about six inches.
10. An attachment according to claim 1, wherein the base consists of an L-shaped flange secured to the bottom of the extension plate, the front sur-face of the bend of the flange being rounded to prevent buildup of asphalt in front thereof during the paving operation.
11. The combination of an attachment according to claim 1, and a paving machine having a draw arm, screw auger and screed, the paving machine being provided with spreader means to ensure that adequate quantities of asphalt are delivered to the area between the paving machine and the end plate of the attachment for simultaneous paving of the gutter of the roadway.
12. The combination according to claim 11, further comprising a roller of a contour corresponding to that of the base of the extension plate, pulled, by appropriate support means, in a line behind the attachment, for rolling the gutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA278,926A CA1043611A (en) | 1977-05-20 | 1977-05-20 | Gutter attachment for asphalt spreader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA278,926A CA1043611A (en) | 1977-05-20 | 1977-05-20 | Gutter attachment for asphalt spreader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1043611A true CA1043611A (en) | 1978-12-05 |
Family
ID=4108708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA278,926A Expired CA1043611A (en) | 1977-05-20 | 1977-05-20 | Gutter attachment for asphalt spreader |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1043611A (en) |
-
1977
- 1977-05-20 CA CA278,926A patent/CA1043611A/en not_active Expired
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