US1893082A - Crack sealer for concrete pavements - Google Patents

Description

Jan. 3, 1933. QVV D 1,893,082

CRACK SEALER FOR CONCRETE PAVEMENTS Filed July 24, 1929 2 4 27 I2 INVENTOR o E.T. HOWARD TTORNEYS Fatented Jan. 1%, 1933 are.

EARL T. I-IOWARD OF FULLERTON, CALIFORNIA, ASSIGNOE OF ONE-HALF TO AGNES RUTH l-IONABD, OF FULLEETON, CALZFOR-NIA CRACK SEALER FOR CON PAVEM'FNTS Application filed July 24,

My invention pertains to a crack sealer for concrete pavements, to sealcracks in the pavement by injecting a liquid oil or other plastic substance which will flow into the crack.

An object of my invention is the construction of a hand operated implement which may be drawn by the operator along a crack and having a guide means to follow the crack in concrete pavements, so that the filler will flow into the crack and in which the flow may be controlled and thus preventing the oils or other plastic substance from spreading on the surface of the pavement. My invention may be applied to. cracks which form in a finished pavement, or may be employed for inserting a filler in the expansion joints.

In this type of work in the prior practice, the oil or plastic material has overflowed the crack, forming a coating on the surface of the pavement, which coating forms a slightly raised surface on the pavement. This is particularly no iceable in the prior practice of filling expansion joints and gives vehicles a series of bumps when driving over pavement in which the cracks have been filled in the manner of the prior practice.

A further object of my invention and as exemplified in my device, is the use of a container for the plastic or liquid material, which is mounted on a handle and has a valve, the valve being readily actuated from the handle. At the bottom of the container or receptacle there is a discharge outlet or orifice which has a guide device which follows the crack or groove in the pavement. Therefore the operator may place this guide device in the crack and then by drawing or pulling the handle may partly slide the implement along the pavement, this following the crack and immediately feeding the liquid or plastic material into the crack, con- M trolling the flow so that it does not overflow the crack or spread on the surface of the 1929. Serial No. 380,683.

pavement. In one type of structure I prefer to mount the receptacle or container on wheels. This is particularly useful for filling expansion joints in concrete pavements.

My invention is illustrated in the accompanying drawing, in which,

Figure 1 is an elevation of my invention taken in the direction of the arrow 1 of Fig. 2;

Fig. tion of the arrow 2 of Fig. 1, partly broken away;

Fig. 3 is a detail vertical section through the lower part of the receptacle in the valve, showing the valve closed;

Fig. 4 is a view similar to Fig. 3, with the valve open;

Fig. 5 is an elevation taken in the direction of the arrow 5 of Fig. 6, being a modified construction of mounting the tool;

Fig. 6 is an elevation taken in the direction of the arrow 6 of Fig. 5.

My invention has the following main elements, these being a receptacle 11, having a discharge tip 12, a valve 13 connected with N the tip. A handle 14; is used to support the receptacle by means of the yoke 15. The valve has a valve stem 16 operating through a guide 17 on the top of the receptacle having an offset portion 18 with a hand grip end 19 extending alongside of the handle. The handle is preferably circular in cross section at the upper part 20 and square in cross section at the lower part 21.

In detail the discharge tip 12 has a conical outside lower surface 22 with a squared lower end 25 through which there is the nozzle 26. A slight prong or projection 27 is utilized to form a guide to follow the crack or groove in the pavement. This is preferably made of stcelite or other hard material. The tip shown with a slight cylindrical section 28, an annular shoulder 29 and an upwardly extending section 30: this latter forming a housing for the valve. This valve 2 is an elevation taken. in the direcstructure has a valve seat 31 communicating with the nozzle 26, an inlet chamber 32 with a lateral Opening 33 through the side of the upward extension 30. A bore 34 leads to the top of the extension to the inlet chamber 32 and accommodates the lower part of the valve stem, this stem having a plug section 35, bearing or; the seat 31 (note particularly Figs. 3 and 4 The guide 17 is preferably supported on a partial cover 36 which extends upwardly and inwardly from the rim 37 at the top of the receptacle 11. This receptacle is preferably made conical with the apex down and has a lower rim 38 which bears on the shoulder 28 and is preferably welded thereto. The upper portion 18 of the stem passes through a guide bracket 39 mounted on the handle and a compression spring 40 engaging between this bracket and the pin il'on the stem functions to force the stem-downwardly, to normally maintain the valve closed.

he construction of Figs. 1 and 2 is-particularly adapted for use with irregular cracks. The device is operated by inserting the lower end in the crack so that the prong 15 fits therein andby drawing the device at an inclination, the nozzle follows the crack. The hot oil or other plastic material placed in the receptacle may be gradually ted by the operator by controlling the valve, this being done by liftingon the handle end 19 and again allowing the stem to drop to the action of the spring 40 to shut off the supply.

Thus the operator may accurately gauge the amount of oil or plastic filler flowing into the crack.

The construction of Figs. 5, and 6 is preferably used for filling expansion cracks in concrete pavement. In this case they have brackets .42 secured adjacent the lower part of the tacle having the apex down with the lower end secured to the tip, a yoke connected to the upper end of the receptacleand having a handl in axial alignment with the receptacle, a valve connected to the tip, a slidable stem, to operate the valve,extending upwardly through the said receptacle and having an 7 extension along the handle with means on the stem adjacent the handle to operate the stem of thevalve. r p 3. A crack sealer, comprising in combination a metal discharge tip having a nozzlev therethrough, a conical shaped receptacle having the apex down and connected to the tip, a yoke connected to the upper end of the receptacle, a handle attached to the yoke and 'inaxial alignment with the receptacle, a valve connected to the tip, an opening in the receptacle, a slidable stem to operatethe valve, aguide means for the stem connected to the receptacle, an extension of the stem along the handle, whereby the stem may be operated to control the valve from a position adjacent the handle.

In testimony whereof I name to this specification.

EARL T; HOWARD. f

have signed; my

receptacle and these have caster wheels 43,

there'being a wheel on opposite sides of the nozzle 36. This allows use of a larger con tainer without being troublesome for the;

operator to handle, the operation being sub stantially thesamej The prong 27 forms a guide to follow the crack or joint of the pavement.

Various changes may be made in the principles of my invention without departing from the spirit'thereot as set forth in the description, drawing and claims.

I claim 1. A crack sealer, comprising in cornbina- I tion a metal discharge tip having a vertical nozzle therethrouglnwitha prong on one side to follow a crack, a conical-shaped receptacle having the apex downand with the lower end secured to the tip, a yoke connected to the upper end of the receptacle and having a handle in axial alignment with the receptacle, the tip having an upward extension in the receptacle with a valve constructed therein, having a lateral opening to the receptacle,

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