US1632515A - Sprayer - Google Patents

Description

W. M. SMITH June 14, 1927.

SPBAYER Filed Dec. 21, 19125 Patented June 14, 1927.

UNITED STATES WILLIAM H. SMITH, OF BEMIDJI, MINNESOTA.

SPRAYER.

Application filed December 21, 1925. Serial No. 76,750.

The invention aims to utilize a vacuum cleaner, particularly of the electrically driven type, as means for coating surfaces by spraying thereon the material, such as paint, enamel, varnish and the like in liquid form.

The invention provides an attachment which may be coupled to any electric vacuum cleaner to admit of the blast of air created thereby being utilized to atomize the liquid material and apply the same to the surface to be coated in substantially the same manner as the ordinary air brush.-

W'hile the drawings illustrate a preferred embodiment of the invention it is to be understood that in adapting the means to meet specific needs and requirements the design may be varied, and such other changes in the minor details of construction may be 0 resorted to within the scope of the invention as claimed, without departing from the spirit thereof.

For a full understanding of the invention and the merits thereof, reference is to be had 5 lo the following description and the drawings hereto attached, in which,-

Figure 1 is a detail view showing the application of the invention,

Figure 2 is an enlarged sectional view of I a receptacle containing the paint, enamel or other liquid material to be atomized and ap-,

plied to the surface to be coated, in the form of a spray and showing the operating parts associated therewith, and

Figure .3 is a fragmentary front elevational View of the parts illustrated in F igure 2.

Corresponding and like parts are referred to in the following description and designated in the several views of the drawings by like reference characters.

The numeral 1 designates a vacuum cleaner of the type adapted to be electrically operated, and 2 represents the exhaust to which the usual dust bag 3 is coupled.

In accordance with the invention a flexible tube 3 is coupled to the exhaust 2 of the fan casing of the cleaner and the attachment is connected to the delivery end of the tube 3 whereby the blast of air may be utilized for atomizing the material and applying the same to the surface tobe coated in the form of a spray in substantially the same manner as the ordinary air brush.

In accordance with the invention, a re ner to be readily atomized by the blast of,

air.

Anozzle 7 is connected to the cover 5 and its delivery end is tapered and terminates in an elongated outlet which delivers a blast of air across the delivery end of the tube 6, whereby to effect delivery of the liquid material from the receptacle 4 and atomize and apply the material to the surface to be coated in the form of a spray. Any suitable connection 8, such as a bracket, may be utilized for connecting the nozzle 7 to the cover 5. In the preferred form the bracket includes an open-ended-nozzle receiving socket 8 which tapers toward the projecting upper end of the tube 6 and is adapted to snugly receive the tapered portion of the nozzle. The nozzle can only be thrust into the socket as far as shown in Figure 2, and, therefore, when in place, it will always have its free end disposed in proper relation to the upper. end of the tube 6 and no adjustment will be necessary. The outer or receiving end of the nozzle 7 may be coupled to the flexible tube '3 in any determinate manner, as indicated at 9 in Figure 2 andthe tube 3 may be of any length to admit of a freedom of movement of the receptacle 4: according to the nature of the Work so that the material may be conveniently applied to the surface to be coated.

In practice, the attachment, comprisin the recetpacl-e 4 and associated, parts, suc as the tube 6 and nozzle 7, may be connected to one end of a flexible tube 3, the other end of said tube being coupled to the exhaust 2 of the vacuum cleaner, after the dust bag 3 has been disconnected, and when the vacuum cleaner is in operation a blast of air is caused to pass through the tube 3 and discharging at the outlet of the nozzle 7 causes a delivery of the material from the receptacle 4, said material as it emerges from the tube 6 being atomized and applied to the surface to be coated in the form of a spray. By having the socket 8 of the bracket formed as shown, the nozzle may be firmly wedged into it, when the device is in use, but may be easily removed so that the receptacle and nozzle may be stored in a container without the nozzle remaining in engagement with the cover of the receptacle. The nozzle and receptacle will, therefore, take up less room and if placed on a shelf there will be less danger of the weight of I the nozzle causing the receptacle to tip over and permit the paint to leak out through the tube 6. It should be further noted that when painting, the receptacle may be very easily detached from the nozzle and the air blast employed to remove dust from a corner of a floor or wall and the nozzle then again thrust into the socket of the bracket without it being necessary to adjust the nozzle toward or away from the upper end of the outlet tube.

Having thusdescribed the invention, I claim:

In a device of the character described, a receptacle open at its top, a removable cover for the open upper end of said receptacle, an outlet tube carried by said cover with its upper portion projecting through the cover and its lower end adjacent the bottom of the receptacle when the-cover is in place, a bracket carried by said cover and including a longitudinally tapered socket open at its ends and having its smaller end disposed towards the upper end of said tube, and a nozzle having one end adapted to be connected with a conduit for fluid under pressure, the nozzle being tapered towards its other end and wedged into said tapered socket with its free end projecting from the smaller end of the socket and terminating adjacent the upper end of said tube for directing a blast of fluid across the same.

In testimony whereof I aflix my signature.

WILLIAM M. SMITH. [1 5.]

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