US2134799A - Marker - Google Patents

Description

v. N. was 2, 134,799

MARKER Filed May 8, 1936 2 Sheets-Sheet l imam/1 4 V. N. PASS MARKER Filed May 8, 1956 2 Sheets-Sheet 2 Patented Nov. 1, 1938 UNITED STATES PATENT OFFICE 9 Claims.

This invention relates to a marker and has particularrelation to means for marking lines on highways, streets and the like to separate the paving into distinct traffic lanes although the in vention is adapted for use in marking lines wherever desired and for other general purposes.

It is an object of the invention to provide a very simple type of apparatus, particularly de- Signed for marking lines on roadways, and streets, to designate the traffic lanes and it may be used for marking off reserved parking areas on streets or roads and for other like purposes.

The apparatus is particularly designed for using hot asphalt, to be used for marking the dividing lines on the paving, or other hot liquids which may be used in lieu of the asphalt; however the apparatus is capable of using any liquid that may be found suitable for marking off traffic lanes or other areas, particularly on paving. It is a further object of the invention to provide a special type of delivery nozzle which will readily deliver a stream of hot marking material with means for moving the nozzle along the paving in such manner as to deliver a smooth uniform strip of the coating or marking material onto the paving surface.

It is another object of the invention to provide a nozzle of the character referred to through which a pressure fluid may be ejected onto the paving so as to remove all sand, dirt and other loose material in advance of the application of the marking material.

A still further object of the invention is to provide a feed nozzle for the marking material which is equipped with means for readily closing the nozzle while the apparatus is being transported from place to place to prevent waste of the marking material.

' It is another object to provide a nozzle wherein provision is made for varying both the length and the transverse diameter of the outlet opening to vary the width and thickness of the film of material delivered on to the paving.

With the above and other objects in view, the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein:--

Figure 1 shows a plan view of the marking apparatus shown connected to a transporting vehicle.

Figure 2 shows a side elevation thereof.

Figure 3 shows a vertical sectional view of the container for the marking material.

.ings wherein like numerals of reference designate similar parts in each of the figures, the numeral I designates the supporting framework of a carriage having the rear wheels 2, 2, and the front wheel 3 and mounted on this carriage there is a pressure pump 4 which may be driven by a suitable belt 5 from a motor 6. A suction line 1 leads from the tank 8 and is connected into the pump and leading from the pump there is a discharge line 9 which is attached to the tul5 bular connection ll] of a nozzle which is designated generally by the numeral I l. A return line 12 is connected at one end to the connection [3 of the nozzle and at its other end is connected into the tank 8. The nozzle H is of special formation having the elongated receiving chamber Hi therein into which the hot asphalt or other material is delivered through the discharge line 9 and from which the excess material is returned into the tank 8 through the return line l2. The cham- 5 her i l has a wide nozzle opening l5 extending approximately from end to end thereof and which is shaped to deliver a thin sheet of the material onto the paving to form. a mark having smooth, well defined margins. Hot asphalt will usually be employed as a marking material. This hardens quickly at atmospheric temperatures and will not readily run after it is once exposedto the air as it is delivered onto the paving and consequently the margins of the mark will not become irregular and the material forms a reflecting surface to the end that the mark will be visible at all times either day or night.

It will be noted that the chamber 14 tapers downwardly and merges into the nozzle opening I5. Within said chamber there is a downwardly tapering wedge it which extends the full width of the nozzle opening and which is swung from the links 11, ll whose lower ends are pivoted thereto. The upper ends of these links are piv-, oted to the arms l8 which are fixed to the shaft Hi. This shaft is mounted in the nozzle and rotates in suitable bearings and has one end extended beyond the nozzle and fixed to the extended end there is an operating lever 2B. When the nozzle is in use the lever 2|] will be manipulated to lift the Wedge Iii so as to open the nozzle opening l5 to permit the material to feed onto the paving. When the machine is not being used for marking purposes the lever 21] may be manip- 5 ulated to another position to permit the wedge I6 to descend to close the opening I5 as shown in Figure 5 so that the material will not waste while the machine is being transported from place to place. The material will be delivered from the tank 8 through the pipes 1 and 9 into the chamber I4 under pressure sufiicient to cause the material to feed out onto the roadway through the opening I5 but the excess material will be returned into the tank through the return line I2.

There is a suitable air compressor 2I mounted on the vehicle 2Ia which also supports the tank 8. This compressor may be driven in any approved manner and leading from it there is a pressure line 22 which is formed into a coil in the tank 8 and which emerges from said tank adjacent the lines 1 and I2 and is coiled around said lines as well as around the line 9 as more accurately shown in Figures 1 and 2. This pressure line divides formingthe branches 23, 24, the former of which enters the front nozzle chamber 25 in the nozzle and the latter of which enters the rear nozzle chamber 26 of the nozzle. The forward chamber 25 terminates in a forwardly directed nozzle opening 21 extending the full width of the nozzle and the chamber 25 has an outlet port 28. In mounting, the nozzle II is arranged in angular relation to the paving 29 so that the nozzle opening 21 will be directed forwardly and arranged in front of the opening I5 to the end that a blast of air will be ejected across the area to be marked so as to clean said area of all loose material thereon before the marking material is applied.

It is to be noted that the tank 8 is equipped with the lower tubes 30 which lead from the rear end thereof forwardly into the chamber 3| which is separated from the main tank by the vertical partition 32. Suitable burners as 33 are provided in the rear ends of the tubes 30 which project a flame through said tubes to heat the same and to heat the asphalt or other marking material with which the tubes are surrounded in the tank 8. The heated air returns through an upper series of tubes 34 leading from the chamber 3I and terminating in the chamber 35 at the rear of the tank from which the outlet or smoke stack 36 leads. The asphalt will therefore be delivered into the chamber I 4 in a heated state and the air passing through the coil 22 will also be heated and since this pipe 22 coils around the pipes I, 9 and I2 the material passing through these pipes will be maintained in a heated state. The hot air in the chambers 25, 26 will also maintain the nozzle I I hot to the end that the asphalt in the chamber I4 will not become too cold and clog the nozzle outlet opening I5.

In operation the vehicle 2Ia will be moved along the paving to be marked and may be guided in the usual way. The nozzle carriage is suitably anchored to the vehicle and the nozzle II will be positioned so as to move along the line to be marked. The asphalt will be delivered through the opening I5 directly on to the paving, leaving a coating of the required thickness along said line, the area to be marked having been previously cleaned by a brush of conventional construction which may be mounted on the carriage and by the air blast ejected through the nozzle opening 21.

Special attention is called to the means for varying the width and thickness of the film of marking material delivered onto the paving. It will be noted that the nozzle I I is made up of two sections I la and I Ib as clearly shown in Figures 4, 5 and 6. These sections are secured together in any preferred manner, preferably by means of bolts 31 with a shim 38 clamped between the margins of the sections as shown in Figures 5 and 6. The outlet opening I5 is provided by merely omitting the shim from the outlet end of the nozzle. Accordingly the transverse diameter of the nozzle opening I5 may be varied as desired by varying the thickness of the shim and the thickness of the film of marking material delivered will be correspondingly varied. The length of the nozzle opening I5 may also be varied by varying the projecting ends of the shim across the outlet end of the nozzle, that is, the ends of the shim may be extended any desired distance toward each other, as shown in Figure 4, to vary the length of said outlet opening I5. As shown in Figure 4 the ends 3811 of the shim are extended only a short distance inwardly toward each other but said ends may be extended inwardly toward each other any desired distance thereby varying the length of the opening I5 and the width of the film delivered onto the paving will be correspondingly varied.

Although asphalt will ordinarily be used, the nozzle is capable of handling other suitable marking materials in liquid state.

The drawings and description disclose what is now considered to be a preferred form of the invention by way of illustration only, while the broad principle of the invention will be defined by the appended claims.

What I claim is:

1. In a device of the character described a nozzle having a chamber for containing liquid, said chamber terminating in a slot forming a discharge opening, said nozzle also having an air chamber terminating in a nozzle opening diverging from the discharge opening, and means for supplying liquid and pressure fluid respectively to said respective chambers.

2. A device of the character described comprising a container for liquid marking material, a nozzle having an internal chamber terminating in a transverse discharge slot, means for delivering the liquid material from the container into the chamber under pressure, a Wedge Within the chamber movable into one position to completely close said slot and into another position to open the slot and a return line leading from the chamber above the discharge slot, and terminating in the container.

3. A device of the character described comprising a container for liquid marking material,

a nozzle having an internal chamber terminating in a transverse discharge opening, means for delivering the liquid material from the container into the chamber, under pressure, said nozzle also having an air chamber terminating in a transverse nozzle opening in advance of the liquid chamber, said openings diverging outwardly means for delivering air into the air chamber under pressure whereby the air may be ejected from the air chamber through the opening of said air chamber and means for heating said air and liquid.

4. A device of the character described comprising a container for liquid marking material, a nozzle having an internal chamber terminating in a transverse discharge slot, means for heating the liquid material in the container, a delivery line leading from the container into the chamber, a return line leading from said chamber above said slot and terminating in the container,

said nozzle having also an air chamber terminating in a. discharge slot arranged in advance of the slot leading from the liquid chamber, an air line arranged in the container to be submerged by the liquid material therein, said air line being coiled about the liquid conducting lines and terminating in said air chamber, means for delivering the liquid and air into said respective chambers under pressure. 1

5. A device of the character described comprising a container for liquid marking material, a nozzle having an internal chamber terminating in a transverse discharge slot, means for heating the liquid material in the container, a delivery line leading from the container into the chamber, a return line leading from said chamber above said slot and terminating in the container, said nozzle having also an air chamber terminating in a discharge slot arranged in advance of the slot leading from the liquid chamber, an air line arranged in the container to be submerged by the liquid material therein, to heat the air passing therethrough said air line being arranged adjacent the liquid conducting lines and terminating in said air chamber, means for delivering the liquid and air into said respective chambers under pressure.

6. In. a device of the character described a nozzle having a liquid chamber therein terminating in a discharge opening, said nozzle also having front and rear air chambers therein, the front air chamber terminating in a nozzle opening in front of the opening in the liquid chamber diverging outwardly therefrom and the rear air chamber having an outlet, means for delivering liquid and air into the liquid chamber and air chambers respectively and means for heating the air delivered into the air chambers.

'7. In a device of the character described a nozzle formed of sections and having a chamber for containing liquid, said chamber terminating in an outlet slot forming a discharge opening between the sections a wedge within the chamber movable into one position to completely close said opening and into another position to open said opening and spacing means whereby the length and transverse diameter of said opening may be varied.

8. In a marker for roadways a nozzle having a transverse nozzle opening shaped to feed a thin film of marking material, said nozzle also having a transverse opening for the discharge of an air blast, said openings. being directed at approximately right angular directions and the blast nozzle opening being arranged in front of the material nozzle opening whereby when the material nozzle opening is arranged to feed material downwardly on to a roadway the blast nozzle opening will be directed to discharge a blast of air over the surface of the roadway in the fonward direction.

9. In a device of the character described a nozzle formed of two sections detachably secured together and having a marginal spacer between them, a portion of which is omitted to provide a Wide nozzle opening, the thickness of the spacer being variable to vary the width of the opening, said nozzle having an elongated receiving chamber therein provided with an inlet and an outlet, one of said sections having a nozzle chamber enclosed therein and provided with a blast nozzle outlet and the other section having an enclosed chamber therein surrounding the outlet from the receiving chamber and a wedge-like member in the receiving chamber having its apex aligned with the outlet opening from the receiving chamber and means for adjusting said wedge-like member to control the discharge of material through said last mentioned opening.

VERNIA N. PASS.

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