US1974979A

US1974979A - Machine for installing a marking element in concrete pavement

Info

Publication number: US1974979A
Application number: US658537A
Authority: US
Inventors: David Y Bate
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-02-25
Filing date: 1933-02-25
Publication date: 1934-09-25
Anticipated expiration: 1951-09-25

Description

D. Y. BATE Sept. 25, 1934.

MACHINE FOR INSTALLING A MARKING ELEMENT IN CONCRETE PAVEMENT Filed Feb. 25, 1953 2 Sheets-Sheet l a km N Sept. 25, 1934. D. Y. BATE 1,974,979

MACHINE FOR INSTALLING A MARKING ELEMENT IN CONCRETE PAVEMENT Filed Feb. 25, 1953 2 Sheets-Sheet 2 w" n L U Patented Sept. 25, 1934 UNITED STATES PATENT OFFICE MACHINE FOR INSTALLING A MARKING ELEMENT IN CONCRETE PAVEMENT.

My invention relates to a machine to install a marking element, composed of white cement concrete, in newly laid concrete pavement at the time the pavement slab is constructed, or, by dispensing with certain operating parts, enable the machine to be used in applying the marking element to old pavements. This marking element serving to designate traflic lanes, is in color contrast to the adjacent commercial gray concrete pavement and being of the same material, concrete, as the main pavement slab, bonds to said slab and forms an integral part of the pavement, wearing to the same extent as the pave ment proper.

It is the principal object of this invention to provide a machine for economically placing this white concrete stripe or marking element into and bonding it with the newly laid pavement slab while said slab is yet in a plastic, workable condition.

Certain pavement finishing machinery is now in use and known as a screed and tamper, whereby a slab of pavement can be finished progressively and without interruption. This machine is provided with a cross-bar, which is the tamper", extending the full width of the slab, and. having an up and down motion against the concrete which serves to compress the concrete to the desired cross-section for the slab.

It is an object of my invention to make use of this cross-bar attachment and the movement thereof by providing a shoe with a width sufficient to provide a recess of the width desired for the marking element and to indent into the newly laid slab to a predetermined depth by riding on the contact side of the tamper and extending suificiently below it.

Another object of this machine is to provide a marking machine to follow the above mentioned screed and tamper, adapted to use the same tracks as said screed and tamper, powered to run at, or about the same speed, said machine further being adapted to carry a quantity of the white concrete in a plastic form, in a suitable hopper ready to be applied in the recess or trench previously formed by the shoe on the tamper.

Another object of this invention is to provide a machine to place the plastic white concrete in the recess or trench formed by the above mentioned arrangement and action of the shoe and to shape said white concrete.

Another object of the invention is to provide a means for covering the plastic white concrete with protective paper, preventing the blending of the slab concrete with the white concrete, also to protect the color of the white concrete when sealing compound is sprayed over the entire pavement slab for curing, after which the covering paper will be worn off by traflic or may be removed to expose the marking element immediately after expiration of the curing period.

The white concrete above mentioned shall consist of commercial white cement, coarse aggregate and fine aggregate and water in such proportions as will comply with specifications for the general construction of the pavement slab to be marked by this machine.

A still further object of this invention is to provide such a machine with adjustable features to accommodate for variation in width, depth, number and location of stripes desired for the marking outof trafllc lanes.

With the foregoing objects in view, together with such other objects and advantages as may subsequently appear, my invention resides in the parts, their construction, arrangement and combination of parts or the equivalents thereof, hereinafter described and claimed and illustrated in the accompanying drawings, in which,

Figure 1 is a plan view of a preferred embodiment of my invention.

Figure 2 is a side elevational view of the same with parts broken away for clearer illustration.

Figure 3 is a rear elevational view of a preferred embodiment of my invention.

The following views are taken in the direction indicated by the arrows and are partly in elevation and partly in section.

Figure 4 is taken from Figure 2 and on the line 104-104.

Figure 5 is taken from Figure 2 and on the line 105105.

Figure 6 is taken from Figure 2 and on the line 106-106.

Figure 7 is taken from 107107.

Figure 8 is taken from Figure 2 and on the line Figure 9 is taken from Figure 2 and on the line 109109.

Figure 10 is a plan below the line 110-110, from Figure '7.

Figure 11 is taken from Figure 2 and on the line Figure 2 and on the line 113-113 from Figure 9. 9

Figure 14 is a cross-section taken on the line 114-114 from Figure 9.

More specially, referring to the drawings, 20 designates a screed finishing machine, a type sold to the trade for finishing concrete pavements under construction. The screed frame 21 carries a tamper bar 22 designated to have an up and down motion against the newly laid concrete pavement slab 23.

In carrying out my invention, I intend to utilize the tamper bar 22 and its action as an aid in forming a trench 24 necessary for the reception of the marking element 25 to be used.

A shoe 26 is provided and adapted to be attached to the tamper bar 22 by bolts 27. The bottom surface is flat and curved upward at the forward end to join the top, thus formed it will extend above the surface 28 of the concrete at the forward edge 29 and therefore ride over the .concrete 23 and depress it by action of the tamper bar 22 and the advance of the screed 20 on the track 30 and make a clean trench 24. The shoe will be made in several widths, as some pavements may require a narrow mark to indicate lanes while others may require a wide mark.

In order to perform the various functions necessary to carry out the objects above mentioned, I have provided a machine, a general description of which will be given and thereafter will follow a detailed description of the working parts of the machine.

A frame structure 31 having traction wheels 32 and designed to follow the screed 20 and to run on the same track 30 and straddle the newly laid concrete slab 23, forms the main body of the machine.

Adjustably secured to the frame structure 31 is a subframe 33 that carries the operating units in their proper sequence comprising a trench reforming roller 34, a hopper 35 for holding a quantity of the pre-mixed marking element 25, and immediately below, a marking element guide and shaper 36.

A covering material 37 is carried on bracket 38 above the sub-frame 33 and is led downwardly and under a forming roller 39 after which it is run between the cover laying guide 40. Behind this is a presser roller 41 that presses the covering material 37 and marking element 25 into shape in the trench 24. Following the presser roller is a flattening or finishing roller 42 to level the marking element 25 and covering material 37 to the finished level or surface of the concrete slab 43. f

The machine may be power driven so that it may advance much the same as the screed so it will travel at approximately the same speed, or it may be manually operated by a crank, not shown, or other suitable means for advancing the machine.

As shown, a power plant is indicated at 44 which drives a transmission indicated at 45 to drive shafts at 46 and 47 connected by universal joints 48 to drive the traction wheels 32 while the forward wheels may run free.

Expansion springs 49 are placed on the axles abutting the wheels on one side to cause the traction wheels to grip the outside of the track, or in case the flange of the wheels is arranged on the .inside of the track the spring location will be on the inside of the wheels, so the machine will be steady and not creep or sway sideways, therefore the trench will be reasonably straight and even along the edges so as to leave a clear definition for marking.

It is necessary, due to curvature of the roadway being built, to employ jacks 50, (or other suitable means not shown may be employed), one or more of which are to be mounted on either side of the framed structure 31 so that the machine may be raised to allow one side to advance while the other side on the jack will remain at rest and thus the machine may round a curve while working. This is only an explanation of the use of the jacks employed and not as new or original herein.

The sub-frame 33 may be lowered or raised by the lever 51 and connected linkage 52 thru bell cranks 53 and tie bars 54 pivotally connected to the sub-frame 33.

Referring to Figures 5, 6, and '7, it will-be noted that the sectional showing of the concrete slab 23 is spaced away from the operating parts of the machine as when the sub-frame is raised to more clearly define the work performed by parts in each view.

In Figure 5, a front view is had of the shoe 26 attached to the tamper bar 22 the sides of the shoe 26 being sloped outwardly from bottom to top, thus giving the shoe 26 a slight draft for easy entrance and exit from the concrete, thereby making clean side walls and a good edge to the trench 24, also leaving the surface 28 of the concrete 23 undisturbed along the edge of the said trench.

In Figure 6, the trench finishing roller 34 is shown to be composed of several parts, a middle roller 55 and a cone-shape roller 56 on either side, the middle roller 55 being the trench finisher which has shoulders 5'? on either side, of a lesser diameter than the main body, with the surface between forming a slight curve or fillet so as to round the sides of the trench 24. The tapered rollers 56 are of the same diameter as the shoulders 57 where they adjoin thereto and extend outwardly a short distance. The middle roller 55 is made in various widths to accommodate for the various widths of trenches desired to be made. The roller assembly rotates freely on a shaft 58 fixed in hangers 59 that are adjustably mounted on the sub-frame 33 so as to accommodate for the width of the trench finishing roller 34.

In Figure 7, the hopper 35 is provided with sloping sides 60 with an opening 61 in the bottom,

said bottom is provided with a gate 62 suitably operated by lever 63 for opening and closing the same. The marking element guide and shaper 36 is made of steel plate, or other suitable material, in members consisting of

side members

64 and 65 turned inwardly to overlap at the rear so that they may be spaced apart and still have a wall 66 at the rear. Said wall so formed is cut away to a little more than the depthof the trench 24 and rounded toward the middle to form a half oval or arch 67, then as the shaper 36 passes over the marking element 25 it will be given an oval form in cross-section and be slightly higher than the finished surface 43 of the concrete slab 23.

The forward under edge of each

member

64 and 65 is curved upwardly so as to over run the bottom of the trench as shown in Figure 2.

In Figure 8, the cover forming roller 39 is concaved transversely on its outer surface 68 and wide enough to accommodate the widest covering material 3'? that will be used. Said roller isrotatably fixed on a shaft 69 that is hung in bracket 70 adjustably secured to the sub-frame 33. Tension bar 38' is fastened to the brackets 38 and extends around the forward side of the paper roll 37 and bears against the outer surface thereof to place a tension on the paper passing under the roller 38 so as to keep it taut while the machine is in operation. The purpose of said roller is to partially prepare said covering material 37 for easy entrance to the cover laying guide 40 in which it is further formed for covering the marking element 25.

In Figure 9, the cover laying guide 40 is shaped from plate steel or other suitable material, consisting of three members fastened together. The bottom edge of the two side members 71 is curved forward and upwardly as shown in Figure 2 so as to over run the bottom of the trench 24. The third or cross member 72 is curved to form an oval or arch to match the shape of the end wall 66 of the marking element shaper 36, and positioned slopingly toward the rear, high enough for the cover material 37 to be carried above the marking element 25. The cross member will be made in various widths for different widths of marks. The bracket '73 supporting said laying guide 40 is adjustable on the sub-frame as shown in Figures 13 and 14. This type of adjustment is typical for several of the units of the machine where a width and height adjustment is necessary. The cross bar is slotted at 74- so the downwardly extending arms '75 of the members '71 may be drawn inwardly or outwardly.

The upturned ends 76 of the cross bar are slotted at 77 to obtain the raising and lowering adjustment in relation to the sub-frame 33 to which the bar 73 is attached.

In Figure 10, a plan view shows,the bracket 78 and rods 79 on which the marking element guide and shaper 36 is adjustably supported. The turned in ends forming the end wall 66 are shown overlapping as stated before. The

side members

64 and 65 are provided with ends 80 provided with openings adapted to slide on the rods 79, there being set screws 81 threaded in said ends to lock said side members on said rods.

In Figure 11, the presser roller assembly 41 is made of two flanged rollers 82 spaced on either side of a spacer roller 83 and a spacer collar 85 is placed on either side of said flanged rollers so that a change in width may be effected by using a wider spacer roller 83 and shorter spacer collars 85.

The flanged portions 86 of the roller 82 extend beyond the main body to a diameter sufiiciently larger so the outer edge 8'7 will reach the bottom of the trench, while the contour of the rolling surface in cross-section of the assembled rollers between the flanges forms substantially the same arch 67 as that of the marking element shaper wall 66 and the cover material 37 fits within and against the underside thereof.

The outer portion of the flanged rollers are filleted at 88 after which the surface is slightly cone-shaped to the edge to form a relief for the concrete surface 43. The shaft 84, which is supported in bracket 89 is adjustably secured to the sub-frame 33.

When in operating position the rollers 41 press the cover material 37 on to the marking element 25 leaving the pressed marking element and cover slightly above the surface of the concrete surface 43.

In Figure 12, the flattening or finishing roller 42 is considerably wider than the widest mark that may be made. It is slightly tapered towards the ends 90 so as to form a relief at each end of said roller. Said roller is rotatably mounted on a shaft 90' fixed in adjustable supporting bracket 90' secured to the sub-frame 33. Said roller rolls the marking element 25 and covering material 37 down flush with finished surface 43 of the concrete slab which closes up the gaps 91 (shown by dotted lines) left by the flanged portion of the pressing roller 41 between the sides of the trench 24 and turned down cover material 37 thereby sealing said marking element 25 and securing the margins of said covering material 3'7 in the slab 23.

A cleaning scraper 92 bears on the finishing roller 42 to insure a clean surface. Finishing rollers 34 and presser 41 are provided with suitable scrapers 92 and 92" respectively.

An operators platform 93, fixed to the frame structure 31 projects from either side thereof to about the full width of the end portions 94 and 95 of the frame structure 31 and a marginal walk 96 extends the full length between end 94 on either side of said frame structure and the operator's platform 93.

Tie bars 9'7 reach from near the wheels on the ends 94 and 95 of the frame structure 31 to the middle portion thereof for stiffness of the said framed structure.

In order to accommodate for the construction of more than one stripe simultaneously, several operating units may be constructed in gangs on several sub-frames 5, adjustably fixed to the main framed structure 31, with respective shoes 26 fixed to the tamper 22 of the screed 20.

Where it is desirable to apply the marking element 25 to old pavement the machine may be adapted therefor by removing the trench finishing roller 34 and changing the type of traction wheels 32 used. of course, the use of the screed and tamper will be unnecessary.

When operating the machine it may be desirable to relocate the sub-frame 33 laterally of the framed structure 31. This may be accomplished by the means herein employed and as shown in Figures 1 and 2. The linkage consisting of the ratcheted lever 51, tie rod 52, bellcranks 53, and links 53 are carried on shafts 98, supported in bearings 99 secured to the framed structure 31.

The shafts 98 are threaded for a suitable distance back from one end and the bearings 99 correspondingly have complementary threads therein for the reception of said threaded shafts.

Handwheels 100 are fixed to one end of each shaft 98 and as the bellcranks 53 linked to the sub-frame 33 are fixed to said shafts, rotation by i an operator will cause said sub-frame to move laterally right or left by reason of the action of the arrangement described.

It will be noted that ample space is provided between the sides of the sub-frame 33 and the framed structure 31 to allow for this lateral movement.

In the practical operation of my invention, any distortion of the pavement slab contour caused by the action of the shoe on the tamper is immediately corrected by the action of the tamper while the slab concrete is in a plastic condition.

Due to the vibration of the slab concrete, caused by the action of the tamper, there will result a certain amount of subsidence in the sides of the trench as formed by the shoe on the tamper, which subsidence is corrected by the reforming roller on the machine which follows the tamper after a sufficient length of time to prevent the blending of the slab concrete with ,the marking element from vibration or other cause. The placing of the marking element, laying the protective covering and the other operations of the machine follow in proper sequence as shown by the drawings.

While I have shown an operative construction or'specific embodiment of my invention, I do not limit myself to the exact details of construction, but may employ such changes in the details of construction and the arrangement of parts as come within the scope of the appended claims.

I claim:

1. The combination of wheeled machines adapted to run on rails for lane marking of pavement while under construction, comprising a screed finishing machine equipped with a tamper, trench tamping means secured thereto for forming a trench, a marking element, and a marking element machine for applying said marking element in said trench, a cover material, means for covering said marking element with said material, both machines being separated and power driven.

2. The combination of wheeled machines adapted to run on rails for lane marking of pavement while under construction, comprisinga screed finishing machine equipped with a tamper, trench tamping means secured thereto for forming a trench, a marking element, a marking element machine for applying said marking element in said trench, a cover material and means consisting of guides and rollers for placing said cover material over said marking element carried by said marking element machine, both machines being separated and power driven.

3. The combination of wheeled machines adapted to run on rails for lane marking of pavement whiie under construction, comprising a screed finishing machine equipped with a tamper, trench tamping means secured thereto for forming a trench, a marking element, a marking element machine for applying said marking element in said trench, said machine provided with trench reforming means after which said marking element is applied, a cover material, means for covering said marking element with said material, both machines being separated and power driven.

4. The combination of wheeled machines adapted to run on rails for lane marking of pavement while under construction, comprising a screed finishing machine equipped with a tamper, trench tamping means secured thereto for forming a trench, a marking element, a marking element machine for applying said marking element in said trench, cover material, means for covering said marking element with said material, said machine provided with a trench reforming means and a valved hopper fixed to the marking element machine for holding a quantity of said marking element.

5. The combination cf wheeled machines adapted to run on rails for marking of pavement while under construction, comprising a screed finishing machine equipped with a tamper, trench tamping means secured thereto for forming a trench, a marking element, a marking element machine for applying said marking element in said trench, said machine provided with trench reforming means, a valved hopper fixed to the I marking element machine for holding a quantity secured thereto for forming a trench, a marking element, a marking element machine for applying said mark'mg element in said trench, said machine provided with trench reforming means, a valved hopper fixed to the marking element machine for holding a quantity of said marking element, guide and forming means for positioning said marking element in said trench, a cover material, means consisting of guides and rollers for placing said cover material over said marking element, and a finishing roller for forming the covered marking element flush with the finished surface of said pavement in which it is placed, both machines being separated "and power driven.

7.- The combination of wheeled machines, each having a frame structure, adapted to run on rails, for lane marking of pavement while under construction, comprising a screed finishing machine equipped with a tamper, trench tamping means secured thereto for forming a trench, a marking element, a marking element machine for applying said marking element in said trench, said machine provided with trench reforming means, a valved hopper fixed to the marking element machine for holding a quantity of said marking element, guide and forming means for positioning said marking element in said trench, a cover material, means consisting of guides and rollers for placing said cover material over said marking element, and a finishing roller for forming the covered marking element flush with the finished surface of said pavement in which it is placed, all of said reforming means, guides and forming means, guides and finishing roller adjustably secured to said frame structure, both machines being separated and power driven.

8. The combination of wheeled machines, each having a frame structure, adapted to run on rails for lane marking of a pavement while under construction, comprising a screed finishing machine equipped with a tamper, trench tamping means secured thereto for forming a trench, a marking element, a, marking element machine for applying said marking element in said trench, said machine provided with a sub-frame adapted for adjustment vertically of said frame structure, trench reforming means, a valved hopper fixed to the marking element machine for holding a quantity of said marking element, guide and forming means for positioning said marking element in said trench, a cover material, means consisting of guides and rollers for placing said cover material over said marking element, and a finishing roller for forming the covered marking element flush with the'finished surface of said pavement in which it is placed, all of said trench reforming means, marking element guides and forming means, cover guides and rollers and finishing roller adjustably secured to said subframe, said sub-frame further being adapted to be fixed laterally of said frame structure.

9. In combination, means for forming a trench in a concrete pavement under construction, and

-means for depositing a marking element therein,

a cover for said element and means for applying said cover on said marking element.

concrete pavement while under construction, comprising a concrete finishing machine having a tamper, means attached thereto for forming a trench in a pavement being finished, a marking element, a cover material therefor and a machine for depositing said marking element in said pavement.

12. In combination, means for lane marking of concrete pavement while under construction, comprising a concrete finishing machine provided with a tamper, means attached thereto for forming a trench in a pavement being finished, a marking element, a machine adapted for carrying a quantity of said marking element, means for depositing said element in said trench, a cover material, means for covering said marking element laid in said concrete, and means for leveling said element substantially flush with the contour of said pavement.

13. In combination, means for lane marking of concrete pavement while under construction, comprising a concrete finishing machine provided with a tamper, means attached thereto for forming a trench in a pavement being finished, a marking element, a machine adapted for carrying and depositing said marking element in said trench, a cover material and means for laying said cover over said marking element deposited in said trench, and means for leveling said covered element flush with the contour of said finished pavement.

14. A power driven machine adapted to operate on the side headers and over the newly laid concrete slab, comprising means for forming a trench in said concrete slab, a marking element, means for depositing said element in said trench, means for covering said element with paper and means for rolling said element and paper flush with the surface of the newly laid slab.

DAVID Y. BATE.