US1395965A

US1395965A - Atomizing and spraying device

Info

Publication number: US1395965A
Application number: US317134A
Authority: US
Inventors: Edward J Mclean; Stephen W Mcgavran
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-08-13
Filing date: 1919-08-13
Publication date: 1921-11-01
Anticipated expiration: 1938-11-01

Description

E. 1. McLEAN AND s. w. McGAVRAN,

ATOMIZING AND SPR'AYING DEVICE.

APPLICATION FILED AUG. I3, I919.

Patented Nov. 1, 1921;

'3 SHEETSSHEET 1- 10 4 ism! 1 i l .5!

E. J. McLEAN AND s w. McGAVRAN,

ATOMIZING AND SPRAYING DEVICE.

4 APPLICATION FILED AUG. I3, 1919. 1,395,965,

Patented. Nov. 1, 1921.,

3 SHEETS- SHE ET 2.

E. J. McLEAN AND s. w. McGAVRAN.

ATOMIZING AND SPRAYING DEVICE.

APPLICATION FILED AUG. 13, 1919.

Patented Nov. 1, 192

3 SH EETSSHEET 3.

.merous other analogous UNITED STATES' PATENT OFFICE.

EDWARD J. McLnANfor SAN" FRANCISCO, AND STEPHEN w. McGAVRAN, or BUR- LINGnMn, CALIFORNIA.

ATOMIZING AND SPRAYING DEVICE.

- To all whom it may concern:

Be it known that we, EDWARD J. MCLEAN, a citizen of the United States, residin in the city and county of San Francisco, tate of California, and STEPHEN W. MoGAvRAN, a citizen of theUnited' States, residing at .Burlingame, county of San Mateo, State of California, have invented a new and useful Atomizing and Spraying Device, of which the following is a specification.

Our invention relates to a novel construction ofv an atomizing and spraying device, whereby liquids, such as paints, washes or chemicals can be sprayed upon any desired 'point, our device being especially applicable for painting ships bottoms, or large, rough constructions of all kinds, white-washing,

horticultural spraying, disinfecting and nuurposes, where economy of labor and material, together with great efliciency and speed are required.

Our invention is based on the known tend ency of all liquids tobe broken up into minute particles or atomized, when coming into conjunction or collision with a column of compressed air or gas moving in a given direction: our novel device being especially adapted to be readily connected up with the standard compressed air supply, commonly installed in modern, large industrial plants, where compressed air mains and connections are always available, standard hose connections being employed and our novel device being portable, and being capable of being readily moved 'or transported from one position to another. Our invention further consists of a novel construction of a coverfor a tank containing the liquid to be sprayed, said.

cover being provided with tapped, holes adapted to receive the air inlet and liquid discharge pipes and to supportthe pipe connections thereon and to also receive a valve adapted to support a funnel or similar filling device. Our invention further consists in conjunction with the cover aforesaid, of a novel construction ofpiping including valvular andtubu'lar connections, whereby 'upon the proper manipulation of certain of the valves, the device is capable-of being used as a blower for compressed air alone, for, the

purpose of blowing off the dust, dirt and the like from the structure to be painted or sprayed, prior to the painting or spray ng operation, the same arrangement of piping upon the proper manipulation of the proper v Specification of Letters Patent.

For the purpose of llustrating our invention, we have shown in the accompanying drawings one form thereof which is at present preferred by us, since the same will be found in practice to give satisfactory and reliableresults, although it is to be understood that the various instrumentalities of which our invention consists can be variously arranged and organized and that our invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described.

Figure 1 represents aside elevation of an atomizing and spraying device, embodying our invention.

Fig. 2 represents a plan view of Fig. 1. Fig. 3 represents a perspective view of a portion' of the discharge nozzle seen in Fig. l. I

Fig. 4 represents a vertical section on line 44 Fig. 1. 4

of the tank, certain of the parts being shownin section.

Fig. 6 represents a top plan view of the cover seen in F ig. 2, with the piping'removed therefrom.

Fig. 7 represents a top plan view of the supporting ring attached to the top of the atomizer tank.

Patented NOV. 1, 1921. a Application filed August 13,1919. Serial No. 317,134. I

Fig. 5 represents a side elevation of the Fig. 8 represents avertical sectional view of the manually operated controlling valve employed.

Fig. 9 represents a section on line 9-'-9 Fig. 8.

Fig. 10 represents a perspective view of the device seen in Fig. 1 showing particularly the arrangement of the valves and piping, for enabling the device'to be used as a compressed air blower or atomizer or sprayer at will. i

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings 1 designates our novel atomizing and spraying device, the same comprising a tank 2 of sufficient strength to withstand the desired pressure, said tank having a ring 3, which may be of cast iron, riveted, welded or otherwise secured to the top thereof. The ring 3 is provided with lugs'4 having the slots 5 therein, which aline with similar lugs and

slots

6 and 7 respectively of the cover 8, which is preferably of cast iron,'and is secured to said ring by means of the bolts 9, having wing nuts therein, a suitable gasket 10, being interposed between said cover and ring. The cover 8 has in the top thereof the central boss 11, the upper portion of which is threaded at 12 to receive the threaded end of the pipe 13, while the bottom of said boss is threaded at 14 to receive the upper threaded end of the pipe 15, through whose lower end 16, the compressed air is discharged in proximity to the bottom of the tank 2, said compressed air being conveyed to the pipes 13 and 15, through the compressed air hose 16, check valve 17 and cross valve 18, it being obvious that when the latter is open the compressed air will flow through the hose 16, check valve 17 valve 18, and pipe 13 into the pipe 15, thereby agitating and charging the liquid 19 contained in the tank and forcing it thence through the outlet pipe 20, whose upper end is in threaded engagement with the bottom of the hole 21, through the boss 22, and the nipple 23, valve 24, pipe 25, and valve 26, to the outlet hose 27 which is connected to the pipe 28, having the discharge nozzle 29, the fiow of the atomized liquid through saidnozzle being controlled by the manually operated valve 30, Whose construction will be evident from Figs. 8 and 9. I

31 designates the valve casing and 32 a bracket supported thereon, the lower portion of said bracket being slipped over the threaded end 33 of the valvecasing, and the upper end of said bracket being slotted at 34, to form the ears 35. 36 designates the valve actuating lever which is pivoted at 37 in the ears 35, the inner end of said lever being in pivotal engagement at 38 with the valve stem 39, whose lower end terminates in the valve 40, which is manually pressed against its seat 41.by the spring 42, the foregoing forming a ready and convenient manually operated device for controlling or throttling the flow of the atomized liquid through the nozzle 29.

In order to conduct the compressed air from the valve 18 directly into the pipe 25,

.- I employ the by-pass pipe 43, best seen in Figs. 2 and 10. which has the valve 44 therein. 45 designates a boss on the cover 8 having a tapped hole 46, therein, for the reception of the threaded end 47, of the valve 48, which has a removable closure or lug 49, so that when said plug is removed, t e lower threaded end 50, of the funnel 51 can be inserted as seen in Fig. 5, when it is desired to fill the atomizer.

The pins 52 which pass through the lugs 4 and serve to pivotally support the. bolts 9, may also be utilized to support the handles 53, as will be understood .from Figs. 1 and 10, whereby the tank can be readily transported to any desired point. The operation is as follows The tank 2, is filled with the desiredliquid by removing the plug 49 after which the funnel 51 is placed in position as seen in Fig. 5, and the Valve 48 being opened the tank is filled to the desired extent. The funnel is then removed and the valve 48 closed. Upon opening the valve 18 and admitting compressed air through the hose 16, said air will flowthrough the check valve 17, and pipes 13 and 15 to the bottom of the tank 2, and the liquid 19 therein will be forced through the

pipes

20, 23, valve 24, pipe 25, and valve 26 to the

outlet pipes

27 and 28 and through the nozzle 29 in the form of a spray upon the desired point. The opening of the valve 44, will permit a portion of the compressed airto enter the fluid exit pipe 25 through the T 54 as will be understood from Figs. 2 and 10.

By pressing on the valve lever 36, seen in Figs. 1, 8 and 9, the valve 40, which normally is closed by the spring 42 may be manually opened to the desired extent, and thus the discharge of the spray or atomized liquid through the nozzle 29 may be throttled or controlled to the desired extent.

When it is desired to use our novel device as a blower, it is only necessary to close the valve 24, and open the

valves

18, 44 and 26, whereupon the. compressed air ,will flow through the

valves

18, and 44, pipe 43, and valve 26 to the

outlet pipes

27 and 28 and the nozzle 29 to the desired point, the flow of compressed air to said nozzle 29 being controlled by the valve 30 in the manner already described.

It is frequently desirable in the painting operation to first remove or blow oil the dust or dirt from the article to be'painted, and our device affords a ready and convenient means for doing this, by simply the proper manipulation of the valves above described. The manually operated throttle valve 30, can be readily applied to the terminal pipe section 28, and by reason of its construction and the manner of mounting the lever 36,

said exit pipe 20, nipple 23, and

pipes

25, 27 and 28, it being evident that the valve 44 being open, that compressed air is permitted to flow through the by-pass 43 so as to come in contact with the liquid at the point 54 where theby-pass pipe 43 joins the outlet pipe 25, said compressed air coming in contact with the liquid at the point 54 carrying said liquid in an atomized and suspended condition to the exit nozzle 29, where it is discharged upon the desired point in the form of a spray or fog.

We are aware of the patent to Dunn, No. 1,199,734, patented September 26th, 1916, wherein is disclosed a process of painting, wherein the paint exit pipe terminates in the upper portion of the paint receptacle at a distance above the body of the paint, so that the air and paint are discharged from the paint receptacle at a point above the level of the paint against the surface to be painted. Our invention is differentiated from the aforesaid construction by reason of the fact that our paint exit pipe 20 is extended nearly to the bottom of our tank 2, so that the paint is not discharged from the level of the body of the paint, but the same is taken from a point near the bottom of the tank, the atomizing being effected by the current of compressed air passing through the by-pass valve 44 in the by-pass 43 and meeting the liquid at the point 54, so that our construction and process of atomizing the liquid or semi-liquid treated or discharged is entirely dissimilarfrom the process of the Dunn patent aforesaid, and to none of the constructions of the prior art do we herein make .our claim.

In painting different surfaces, it is desirable and necessary that fluid in varying degrees of atomization be used, and also that varying degrees of velocityv ofthe ejected atomized fluid be employed, and to that end,

the structure of applicants invention has been devised. It is obvious that by adjusting the valve 44 in the by-pass, to varying positions, the atomized condition of the fluid ejected from the tank 2 may be varied. It is further obvious that by adjusting the cross-valve 18, the pressure in tank 2 may be varied at will. Either valve 18 or valve 44 may be adjusted individually, Without affecting in any manner, the function of the air inlet pipe discharging in other; or if desired, both valves may be adjusted without affecting, in any way, the function of each valve individually.

It will now be apparent that We have devised a novel and useful construction of an atomizing and spraying device, which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while We have, in the present instance, shown and described a preferred embodiment thereof which will give in practice satisfactory nd reliable results, it is to be understood that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantage. Y

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

1. In a device of the character stated, a paint-containing tank having a compressed air inlet pipe discharging in proximity to its bottom, an air and paint discharge pipe having its inlet end in proximity to the discharge end of the compressed air inlet pipe and having its outlet end adapted for connection with a discharge hose, a valve controlled bypass between said pipes, and a removable cover for said tank, said pipes and by-pass being mounted on and supported by said cover.

2. In a device of the character stated, a paint-containing tank having a compressed roximity to its bottom, a manually operab e valve controlling said pipe, an air and paint discharge pipe having its inlet end in proximity to the bottomof said tank, and having its outlet end adapted for connection with a discharge hose, a valve controlled by-pass between said pipes, said by-pass communicating with said air inlet pipe at a point in advance of said controlling valve, and a cover for said tank, said pipes and by-pass being mounted on and supported by said cover. I

EDWARD J. MoLEAN. STEPHEN W. McGAVRAN.

Witnesses:

H. H. HITZER', ROY.OLSEN.