US627877A - Spraying-machine. - Google Patents

Description

Nu. 627,877. Patented lune 27,1899.

' w. o. s.. F. E. nue-sT. f

SPRAYING MACHINE.

(Application led June 3, 1898.1

2 Sheets-Sheet l.

(N0 Model.)

WITNESSES JMW/A i No. 627,877. Patented lune 27, |899.

w. o. &.'F. E. QUEST.

SPRAYING MACHINE.

(Application filed June 3, 1898;)

(No Model.) 2 Sheets-Sheet 2.

A TTORIVEV.

TME No NITED STATES j PATENT rtree. i

VILLIAM O. QUEST, OF KNOXVILLE, AND FRANCIS E. QUEST, OF MCKEES ROCKS, PENNSYLVANIA.

MAcHlNE.

` SPECIFICATION forming part of Letters Patent No. 627,877, dated J une 27', 1899.

Application filed .Tune 3, 1898. Serial No. 682,461. (No model.)

To all whom it may concern:

Be it known that we, WILLIAM O. QUEST, residing at Knoxville, and FRANCIS E. QUEST, residing at McKees Rocks, in the county of 5 Allegheny and State of Pennsylvania, citizens of the United States of America, have invented certain new and useful Improvements in Spraying-Machines, of which the following is a specification, reference being had therein lo to the accompanying drawings.

Our invention relates to certain new and 'useful improvements in spraying devices.

The object of our invention isto provide a device of this character which can be used 15 for the spraying of paint or other liquids upon car-bodies and other objects.

A still further object fA our invention is t0 provide a device of thisy character with suitable means when in operation which will prezo vent the dripping of the spraying material at the mouth of the spraying device.

- Our invention further consists in the novel means for regulating the flow of the spraying material and also separately controlling the z air-passage, thereby permitting the air to be used as a cleaning medium for the object to be sprayed before applying the spraying material. 4

Our invention further consists in the novel 3o means, hereinafter more fully described, for forcing the spraying material to any desired height.

Our invention finally consists in the novel combination and arrangement of parts here- 3 5 inafter more fully described, and particularly pointed out in the claims hereunto appended.

In describing the invention in detail reference is had t0 the accompanying drawings, forming a part -of this specification, wherein `4o like numerals of reference indicate corresponding parts throughout the several views thereof, and in which* Figure lis a perspective view of our improved spraying device. Fig. 2 is a perspec- 45 tive view of a part of the storage-tank, the

lower wall thereof being partly broken away,

showinga perforated air-pipe and a discharge- 4 pipe with strainer attached. Fig. 3 is a side view of the paint and air discharge pipes,

5o showing the spraying device in longitudinal section and the valves and adjusting mechanism partly in section. Fig. l is a detail perspective view of the adjustable connecting means for the adjusting lever and rod. Fig. 5 is a detail perspective view of the ad- 55 j ustable cap to which the adj usting-rod is connected. Fig. 6 is a front view of the spraying device.

.Referring to the drawings by reference-numerals, 1 indicates the air-tight storage-tank 6o for the spraying material, which when used, as shown in the drawings, is secured by a suitable ,fastening means 2 to the top 3 of a barrow or cart having legs or supports 4, wheels 5, and handle 6. The tank 1 is provided with 65 an adjustable gate 7 for the admission of the spraying material therein and is also provided with a top 7', having suitable openings or apertures formed therein for the insertion of the air or gas pipe 8, which has a series of 7c perforations 9 formed in its lower end to allow the air or gas to issue therethrough and agitate the liquid.

10 indicates an outlet-pipe for the liquid, having a strainer 11 secured to its lower end. 75

Mounted in the tank is a pipe 12, which is adapted to regulate the pressure ofthe air or gas therein, and connected to this pipe is a blow-off pipe 12.

13 and 13 indicate the cut-off valves, which 8o are mounted in the pipes 8 and lO to allorir the ingress and, egress of the air or gas and spraying material. The pipe 8 has secured to its upper end a T-pipe 14 for connecting the same with the members 15 and 16. The 85 pipe 10 has an elbow 17 secured to its upper end for connecting thereto the member 18.

indicates the air-discharge pipe, which is suitably connected to the member 15 by means of the coupling 19, and 20' indicates 9o the paint-discharge pipe, which is connected to the member 18 by the coupling 19. The pipes 20 and 20' are secured in alinement with each other by means of the coupling device 2l.

Secured to the air-discharge pipe 20 is a 95 valve-chamber 22, and secured to the paintdischarge pipe 2l is a valve-chamber 22. These valve-chambers are of the ordinary construction and have operating therein the piston-rods 23 23. These piston-rods have roo mounted thereon a suitable coiled tension or resistance spring and also the valves 24, which receives the end of the air-pipe 20.

are adapted to rest upon the valve-seats 25. The valve-chambers 22 22 are mounted on the pipes 2O 20 adjacent to each other, one extending upwardly and the other downwardly,V as shown. Mounted upon the air-discharge pipe 20 is an upright 26, to which is pivotally connected, as at 27, the adj Listing-lever 28, and formed integral with this adjusting-lever 28, near one end thereof, is an adjusting-frame for adjusting the rod 3l. The adjustingframe consists of a pair of longitudinal extensions or the rods 30, suitably spaced apart, one thereof being cut away, as at 30', and formed integral with the outer end of these extensions or rods is the bar 34'. The cutaway portion 30 is formed to allow of the mounting upon the bar 34 of the securingcap 32. The rod 3l is adapted to be connected to one side of the cap 32 by means of the set-screw 33, the end thereof being suitably apertured to receive the screw as well asthe side of the cap. The cap 32 is mounted on the bar 34 and secured thereon by means of the set-screw 33', which operates over the cap and against the upper edge ofthe bar. Connected to the lower end of the adjustingframe is a screw-threaded shaft 34, having operating thereon the nut 35 to retain the adjusting-rod in the position desired. The adjusting-rod 3l is pivotally connected at its opposite end, as at 36, to the end of the pistonrod 23'. The air-discharge pipe 20 is connected at its other end to the spraying device, and the paint-discharge pipe 20 is connected to the spraying device by means of the coupling 38, elbow 39, and the screw-threaded circular flange 40, which is formed integral with the outer cylindrical casing 4l of the spraying device and is adapted to receive the opposite end of the elbow 39.

The spraying device is constructed of a cylindrical casing 41, which is screw-threaded on its periphery at each end and has secured thereon the screw-threaded caps 42 43,wl1ich hold the parts when assembled in a compact position. Formed in the screw-threaded cap 43 is the inlet-opening 44, having a screwthreaded wall surrounding the same and extending outwardly through said opening and The screw-threaded cap 42 has the outlet-opening 46 formed therein to allow the end of the nozzle 47 to extend therethrough. rlhe nozzle 47 has formed on its periphery o r integral therewith a circular screwthreaded flange 4S, which is adapted to have secured thereto one end of the inner cylindrical casing 49, which is of such diameter as to allow an air-passage to be formed between its periphery and the inner face of the cylindrical casing 41, and the opposite end of the inner cylindrical casing is secured to Jthe screw-threaded end of the air-inlet nipple 52, thereby forming a chamber 50. The cylindrical casing is held in position to allow the passage of air to pass between its periphery and the inner face of the outer casing by means of providing the same with a screw-threaded opening, which is adapted to receive the screw-threaded upper end of the elbow 39, the end of the elbow 39 acting as a support therefor. The opposite end of the inlet-nipple 'is adapted to coincide with the converging inner end 54 of the spraying-nozzle, as shown.

55, 56, 57, and 58 are-air-passages, which are formed between the outer end of the inlet-nipple and the screw-threaded cap 43, the periphery of the inner cylindrical casing and the inner face of the outer casing, the cylindrical flange and the spraying-nozzle, and the mouth of the nozzle and the screw-threaded cap 42.

59 is a gasket which is mounted between the nipple 52 'and the screw-threaded cap 43 and is provided with a central opening, which registers with the air-passage 56.

The member 16 of the air-inlet pipe is connected to an air or gas supply.

Owing to the novel construction of our adjusting means for the valves, the paint-discharge and air pipes can be used separately.- that is to say', that by the adjustment of the adjusting-lever, thereby seating the valve, which is desired to be closed, it will prevent the passage of air or material through the pipe. This .means is particularly adapted, when -it is desired to clean the spraying mechanism of any accumulation therefrom of the spraying material and is also particularly adapted to be used when it is desired to cleanse the object to be sprayed upon from any dust or dirt which may be thereon.

Owing to the air-passages formed in our spraying device and theforce ofthe air passing therethrough and thence outwardly around the mouth ot' the nozzle, the spraying mate'- rial is prevented from dripping, which dripping is of com mon occurrence in this kind of devices. The air will arrest the movement of any dripping of the spraying material and force the same against the object to be sprayed.

It will be readily understood that as the spraying material enters the chamber 50 the air as forced through the inlet-nipple Will eject the spraying material through the nozzle 47 in a steady stream.

It will be observed that after the paint or spraying material has been placed into the storage-tank air or gas is admitted thereto by the opening of the valve 13', which agitates the paint or spraying material contained in the storage-tank and forces the same up through the outlet-pipe l0 into the paint-discharge pipe and then into the chamber 50 of the spraying device. At the same time the air or will be forced through the air or gas discharge pipe (which is connected to the air or gas inlet pipe) into the spraying device. The air or gas will enter the spraying device through the cap 43 and thence through the inlet-nipple and will force the paint which has accumulated in the chamber 50 through the spraying-nozzle on the object to be sprayed IOO IIO

in a steady stream. A portion of the air as it enters the spraying device will pass through the air-passage formed therein and be discharged therefrom around the mouth ofthe spraying-nozzle with such force that the dripping of the spraying-nozzle will be prevented, as any dripping from the spraying material will be arrested by the air and carried against the object that is to be sprayed.

Owing to the simplicity of our improved spraying device, it is thought that no further explanation of its operation is deemed necessary.

It may be noted that various changes may be made in the details of construction without departing from the general spirit of our invention.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. A paint-spraying device consisting of an outer and inner casing, a paint-inlet pipe extending through the outer casing and terminating in the chamber of the inner casing, a paint-discharge nozzle attached to the inner casing and, projecting through the outer casing, an air-inlet communicating through the inner and outer casings to the chamber of the inner casing, and an air-passage between the inner and outer casings communicating with the air-inlet and adapted to discharge air around and exteriorly to the paint-discharge nozzle whereby the dripping of the sprayed material is prevented, substantially as described.

2. In a spraying-machine, the combination of a tank, a paint-spraying device consisting of an outer and inner casing, a paint-inlet pipe connected to the tank and extending through the outer casing and terminating in the inner casing of the spraying device, a paint-discharge nozzle attached to the inner casing and projecting through the outer casing, an air-inlet pipe communicating with the chamber of the inner casing, and an airpassage between the inner and outer casings to discharge air around and exteriorly to Y the paint-discharge nozzle whereby the dripping ofthe sprayed material is prevented, substantially as described.

a paint-inlet pipe communicating with the interior of the inner casing, a paint-discharge nozzle attached to the inner casing and extending through the outer casing, and an airpassage between the inner and outer casings and adapted to discharge air arou'nd and eX- teriorly to the paint-discharge nozzle whereby the dripping of the sprayed Vmaterial is prevented, substantially as described.

4. In a spraying-machine, an air-tight storage-tank or paint-receptacle, a paint or spraying-material outlet pipe projecting downwardly therein, a strainer secured to one end of said pipe, an air or gas inlet pipe eXtend ing downwardly in said tank-and having its inner end perforated to permit the air or gas admitted through said pipe to agitate the paint or spraying material within the tank or receptacle, an air-discharge pipe connected to said inlet-pipe, valves mounted in said airinlet and paint-outlet pipes, and means connected to said valves for regulating the flow of air or spraying material, substantially as described.

5. In a spraying-machine, the combination of a storage-tank, an air or gas inlet pipe arranged therein and connected to the source of air or gas supply, the inner end of said pipe being provided with perforations to permit the escape of the air or gas into the storage-tank to agitate the material therein, an air or gas discharge pipe connected to said inlet-pipe, a discharge-pipe for the spraying material, a strainer secured to the inner end of 'said pipe, and means connected to said pipes for regulating the flow of air or gas and of the spraying material, substantially as described. p In testimony whereof we affix our signatures in the presence of two witnesses.

WILLIAM O. QUEST. FRANCIS E. QUEST. Vitnesses:

ALBERT J. WALKER, A. M. WILSON.'

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