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Publication numberUS2823487 A
Publication typeGrant
Publication dateFeb 18, 1958
Filing dateOct 31, 1955
Priority dateOct 31, 1955
Publication numberUS 2823487 A, US 2823487A, US-A-2823487, US2823487 A, US2823487A
InventorsLouis Mandlak
Original AssigneeLouis Mandlak
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dispenser for powdered substances
US 2823487 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

L. MANDLAK 2,823,487

Filed Oct. 31, 1955 HVVENTUR.

ATTORNEY United States Patent DISPENSER FOR POWDERED SUBSTANCES Louis Mandlak, Fort Worth, Tex.

Application October 31, 1955, Serial No. 543,736 7 Claims. (Cl. 43-146) This invention relates to powder dispensing devices for insecticides in destroying all types of insects, such as flies, ants, roaches, and the like, and it has particular reference to a gun from which the insecticides can be expelled and directed through a spout or nozzle about the areas to be treated, and its primary object resides in the provision of a compressible container, simulating a bellows, as described in Letters Patent No. 2,349,875 issued on May 30, 1944 to Louis Mandlak, but includes certain improvements by which the contents can be maintained in a state enabling it to be readily discharged through the spout.

Another object of the invention resides in the provision of a needle or cleaning rod which is supported in the base of the container and is adapted to be removed, as

desired, for use in cleaning or unclogging the discharge spout or nozzle in order that the insecticide can be blown therethrough evenly and properly distributed, since some powdered insecticides have a tendency to lump or adhere to the inner surfaces of the discharge spout, which is tubular, especially in humid or damp atmosphere.

A still further object of the invention is that of providing a discharge spout which extends through the bottom of the container, providing a slotted or perforated intake chamber within the bottom of the dispenser container by which the contents are admitted to the spout in a comminuted state, retarding any lumped or solid materials which would otherwise clog the discharge spout and prevent the free movement of the powder therethrough.

Broadly, the invention contemplates the provision of an insecticide gun or dispenser which can be economically manufactured and operated, and in which is provided means to evenly and properly disseminate the contents to be discharged therefrom, and providing a self-enclosed medium by which the discharge spout can be maintained in open and operative condition at all times.

While the foregoing objects are paramount, other and lesser objects will become manifest as the description proceeds, taken in connection with the appended drawing wherein:

Figure 1 is a side elevational view of the invention, showing the knurled head of the clean-out needle for the discharge spout.

Figure 2 illustrates the invention in vertical section, showing the concentric arrangement of the removable clean-out needle, the head of which is threaded into the base of the container.

Figure 3 is a plan view of the base portion of the invention showing the intake openings in the manifold in the base, and

Figure 4 shows a modified base member and discharge spout, the latter terminating in the front of the base member, as shown in the cutaway portions.

Accordingly, the invention comprises a base member which is preferably cup-shaped, having a circular wall 11 which is formed witha concave recess 12 circumferentially thereof to receive a securing ring 13 for the tubular flexible closure 14 of the container, which is designated-T.

trically thereof which is closed by a stopper or cork:

plug 18.

The flexible closure 14 is formed of a pliable mate rial, preferably of rubber, or a plastic material having.

the characteristics of rubber, capable of expansion and? contraction while assuming its normal shape and form under the influence of a coil spring 19 which has a diam-- eter adapted to that of the member 14 to maintain its tubular shape, as shown in Figure 2, the spirally pro jecting outlines of the spring 19, being shown in Figure 1-.. The lower end portion of member 19, as shown in Fig. 2 rests on the discharge member 26.

The circular or annular opening 17 is defined by a rolled flange 20 which provides a bead 21 about the plug 18, as illustrated in Figure 1, but extends briefly into the container 15, as shown in the sectional view of Figure 2.. A retainer ring 22 is applied to the top of the flexible closure 14 about the top 16, which also has a circumferential recess 23 formed in its depending flange 24.

The circular bottom or base member 10 has circular openings 25 formed in diametrically opposite sides in its circular wall 11 through which a discharge tube 26 is secured, as by soldering, one'end of which extends substantially outwardly from the base member 10 and is tapered to provide a nozzle 27 toward its outer end.

The inner end of the tube 26, which may also be referred to as a discharge spout, extends diametrically through the base member 10, and the openings 25, projecting from the rear thereof, as shown in Figures 1, 2 and 3, to provide an interiorly threaded boss 28 to receive the threaded base 29 of the head 30 of a clean-out needle 31 which extends concentrically into the tube 26 toward its tapered discharge end, as illustrated in Figure 2.

The inner portion 32 of the tube 26, or that portion which is enclosed within the circular base 16, has a series of spaced slots or perforations 33 in its upper side through which the powdered contents of the container 15 pass thereinto to be blown out through the nozzle 27 which is substantially restricted to insure proper distribution of the insecticide materials.

This structure constitutes desirable improvements over the prior art in that it is more economical in manufacture and affords a collecting manifold which more evenly admits the contents of the device to the discharge tube 26, rejecting the heavier or lumpy particles which are uot'readily expelled through the restricted nozzle 27..

It is expedient that some means be provided, which can be made ever present, to clean out the discharge tube 26, especially the tapered portion thereof designated as the spout 27, and the needle 31 is installed in the tube 26 for this purpose. As will be observed, by reference to Figure 2, this member can be easily removed by unthreading the head 30 from the boss 28 so that the needle 31 can be inserted through the discharge end of the nozzle 27 to dislodge any clogged materials therefrom and back into the container base 10.

In Figure 4 is illustrated a modified form of the base 10 in which the tube 32 terminates a brief distance within the member 10 and a sleeve 34 is integrally secured diametrically opposite thereto to provide an anchor for the threaded portion 29 of the head 30 of the clean-out needle 31, which is fragmentarily shown through the cutaway sections of Figure 4. The structure there shown eliminates the slotted or perforated portion 32 of the tube 26 which is more economical in design but is more capable of admitting lumps and heavier particles of the powdered materials to the tube 26.

In order to protect and cover the ring 13 about the bottom of the member 14 a flexible band 35 can be provided, if desirable, as shown in Figures 1 and 2, and such arrangement will afford a better seal for the container.

Manifestly, the structure herein shown and described is capable of certain changes and modifications 'frorn'time to time, by persons skilled in the art, without departing from the spirit of the invention or the scope of the ap-" pended claims. i

What is claimed is:

1. In a dispenser for powdered insecticides, and the like, having a compressible container operablef as a bellows, and having a base portion and a top portion providing a pliable tubular closed structure, a discharge tube having its inner end fixed in said base portion and 'extending therefrom transverse to the axis of said base portion, and having a tapered nozzle portion forme d towa'rd its outer end, a perforated portion of said tube in said base portion, and a cleanout needle removably arranged throughout the length of said tube and securabl eiin the inner end thereof. V I I 2. In a dispenser device for powdered insecticides, and the like, having a main body and container portion formed of a pliable material and compressible to expel powdered materials therefrom, and a base for said body and a top therefor opposing said base, a discharge tube arranged diametrically through said base and extending outwardly, therefrom to provide a discharge for the eontents of said container, the inner end of saidtube being arranged through said base and having perforationsthere; in in the presence of the contents of said container, a por tion of the inner end of said tube having interior threads and projecting from said base opposite the said discharge portion of said tube, and a needle member. arranged concentrically of said tube and detachably threadedflat its inner end to said inner end of said tube.

3. In a dispenser for insecticide powders havinga cy lindrical compressible container member, a circularibase and a circular top opposingly arranged so that theends of said closure are attached thereto, and a coil spring in-, R terposed between said base and top members expanding said closure, a discharge spout arranged diametrically. through said base member and having inlet openings in. its inner portion in said base member, and having an in, teriorly threaded portion in said base member, and a clean out needle removably secured ,in 'said.threaded L portion concentrically of said discharge spout."

4. In a dispenser for powdered insecticides having a compressible body and base and top members on said body, and a discharge tube extending laterally from said base member and having an interiorly threaded portion arranged transversely therethrough, a clean out needle removably arranged concentrically-of said tube having a7 head on its outer end, and threaded means formed with said head for securing the same in the said threaded portion of said tube.

5. In a dispensing device for powdered insecticides, and the like, having base and top members and a compressible body providing a container, a discharge tubular spout extending through said base member and having inlet perforations in its inner end in said base member, a needle removably extended throughout the length and arranged concentrically of said spout and having a head member threadedly securable in the inner end of said spout.

6. A powder gun comprising two circular members each having a surrounding side wall, the members being arranged with the edges of the side walls in opposed relation, a flexible tubular side wall extending between and connected at its ends to the side walls of the circular members, the side wall of one circular member having a pair of diametrically opposed openings therein, a tubulardischarge' spout having a perforated end portion insorted through gthe openings and disposed across the circular memb'e a threaded plugreceived in the adjacent end of the discharge spout, a clean-out needle carried by the plug and disposed concentrically within the discharge spout, andacoiled spring within and extending through the flexible tubular side wall and bearing at one end upon the discharge spo'ut' and having its other end engaged in the opposite fcircular member.

7. A power gun comprising two circular members each having a surrounding side wall, the members being arranged with the 'edg'esof the'side'walls in opposed relation, a flexibletubular side wall extending between and connected at' it s ends to the side walls of ,the circular members, the side wallof one circular member having a pair of diametrically opposedopenings therein, a tubular discharge spout having'. an end portion inserted through one o ftheopenin gs, a sleeve inserted through the opposite opening and aligned. withthe discharge spout, a threaded plug received in the outer end of. the sleeve, a clean-out needle ca ri ir the eh l dispesed centrically within the sleeve and the discharge spgut, and a coiled spring within andextending through the fiexible tubular side wall and bearing at one end upon the discharge spout and the sleeve and having its other end engaged in the opposite circularmember.

References Cited in the file of this patent UNITED STATES PATENTS 779,798 Palm Jan. 10, 1905 814,605 Holly -4. Mar. 6, 1906 1,636,331 Smith June 19, 1927 2,349,875 Mandlak May 30, 1944

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US779798 *Jul 27, 1904Jan 10, 1905William HowlandOil-can.
US814605 *Feb 18, 1905Mar 6, 1906Forrest C HollyCollapsible tube.
US1636331 *Apr 22, 1922Jul 19, 1927Herbert Hice WhetzelApparatus for application of powdered disinfectants
US2349875 *Jul 28, 1942May 30, 1944Louis MandlakPowder gun
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3100362 *Jul 7, 1961Aug 13, 1963Getz Exterminators IncPowder distributors
US4367198 *Jun 19, 1981Jan 4, 1983Medical Laboratory Automation, Inc.Reagent reservoir system for use in testing apparatus
US4453654 *Jun 16, 1982Jun 12, 1984Electric Power Research Institute, Inc.Continuous casting nozzle with transverse reinforcement structure
US6089412 *Oct 16, 1998Jul 18, 2000B&G Equipment CompanyMultipurpose dispenser system
U.S. Classification222/148, 222/211, 222/633
International ClassificationB05B11/04
Cooperative ClassificationB05B11/041
European ClassificationB05B11/04B