US1606492A - Aspirator - Google Patents

Description

Nov. 9, 192e.

D. M. ACKERMAN ASPIHATOR Filed Jah. 21, 1925 Patented Nov. 9, 1926.

UNITED STATES i recalca Parana? carries.

DLLETTA. MAY .ACKERMAN, UF LONGBEACH, CALIFORNIA, ASSIGNOR OF FORTY- NINE PER CENT 'lO PEARL D. PATCHELL. 1

ASPIRAT OR.

Application led January My invention aims to proivde an improved fluid actuated aspirator particularly adapted for use in conjunction with surgical and massage appliances; although it is capa ble of various uses.

in the accompanying drawings showingI one illustrative embodiment of my invention, particularly adapted for actuation by domestic water pressure,

Fig. 1 is a view in side elevation showing my improved aspirator attached to a household spigot; i

Fig. 2 is a central sectional view in elevation of the aspirator shown inFig. 1; and

Fig. 8 is a transverse sectional view taken on` the line 3-3 of Fig. 2.

Referring to the 'illustrative embodiment of the` invention shown in the drawings, the form of my improved aspirator shown therein comprises a hollow approximately eggshaped shell 10, preferably made of aluminum, arranged with its axis vertical and having axial inlet and outlet openings at its upper and lower extremities for a suitable motive fluid, such as water under pressure. Centrally disposed within the hollow interior of the shell is a Venturi nozzle 11 (Fig. 2), preferably cast integral therewith, and having an enlarged outlet terminating short of the bottom of the shell. The space between the enlarged upper end of the nozzle 11 and the innerwall of the shell is closed by a connecting web 12 which is spaced be-` low the top wall of the shell to provide an air chamber 13, which has an opening communicating with an air exhausting conduit 111, shown as an integral nipple projecting from the body of the shell near the top.

At the top of the shell, I have shown arestricting nozzle 15, adjustably threaded into the inlet opening which extends downwardly into the air chamber 13, and preferably terminates at the enlarged inlet to the Venturi nozzle. The space surrounding the lower end of the nozzle 15 provides an annular inlet for the air which it is desired to exhaust from the chamber to enter the Venturi nozzle and commingle with the motive fluid therein. Advantageously, this nozzle may 0 be adjusted longitudinally to produce the most effect-ive suction. The top of this nozzle is shown as being slotted to receive a screw driver, and may be locked in adjusted position by means of a threaded sleeve or nipple 16, shown in Fig. 2 as having a hex a1, 1925.Y serialV No; 3,862.

agonal portion in the upper end of its bore to receive an end wrench.

To provide convenient means for attachmg myaspirator'to an ordinary household spigot, I 'have shown the nipple 16, which is threaded into a counterbore in the shell threaded sleeve 18 direction. As` shown in Fig. 1, this sleeve preferably has ears 2O projecting from it to facilitate threading it on an, externally threaded bushing 21 carrying a suitable gasliet or packing 22 for yieldably engaging the mouth of the spigot. l have shown thumb Screws 23 distributed around the bushing 21 at its upper end togfacilitate securing it against lateral movement on the spigot after it has been adjusted properly. i

At the upper end of the shell I have shown opposed integral ears 24, each having alperforation to receive a hook 25 on the end of a chain or cord 26 which is adapted to be secured around the top of the spigot. This chain or cord 27 between its ends to permit it to be secured to the spigot under tension and hold the aspirator with its packing 22 in water-tight engagement with the mouth of the spigot.

It is desirable `to reduce the velocity of the water and air being discharged from the aspirator and eliminate unnecessary splashing of water against the bottom yof the sink or basin under the spigot, and to this end I have provided a bafHe 28 (F ig. 2) above the discharge opening in the bottom of the shell. Conveniently, the bai-He may be integral with the shell casting and preferablyv extends entirely across the inside of the shell below the lower end of the Venturi nozzle. It may advantageously be shaped to divide and gradually spread the stream into a circular sheet discharging radially against the sides of the shell. At spaced intervals near the inner wall of the shell I have shown openings 29 (Fig. 3) through the ballie so that the spreading volume of the commingled water and air is permitted to escape in a plurality of streams. The chamber abovek preferably has a coil spring the bathe 28 and around the Venturi nozzle serves as an air trap or air chamber to counteract any tendency to produce a water hammer and eliminate the objectionable noise incident thereto.

I have shown the baliie 28 as being pro'- videdwith a central opening which permits easy removal of the core sand from the lower end of the Venturi nozzle, and this opening is closed by a specially shaped adjustable plug 30 which is screw-threaded and has as'lot in its lower end to receive a screw driver. rIhe upper end 31 of this plug nis' preferably tapered and cuivedas shown in Fig'. to produce a whirling action of a commingled air and water discharging from the enlarged outlet end of the Venturi nozzle. This provides, in eillect, a second restriction in the Venturi nozzle to increase the suction. The width of the passage between the plug and outlet end of the nozzle may be adjusted to give the maximum suction et feet under service conditions. The enlarged annular space around the Venturi nozzle permits some ofthe water to passup in vit after striking the baille 28 and allows the commingled air and water to expand more or less freely after` passing out oit the lower restricted opening between the bottom of the Venturi nozzle and the baille.

The device'illustrated comprises a rubber hose or flexible tube 32 which may be slipped over the nipple 14, and any suitable applicator, such for example, as the massage cup 33, may be inserted in the open end of the tube so as to utilize the suction to massage the body. However, my aspirator is capable of a wide variety of uses and I desire it to be understood that this illustrative use is not to be construed in a restrictive sense.

From the `foregoing description it'will be observed that I have produced a relatively simple and very durable aspirator in which threaded joints and a multiplicity of parts that ordii'iaiily require accurate fitting to prevent leakage are eliminated. Also, Il have materially reduced the expense of man-V ufacture by combining in a single casting a number of the elements of my invention. The device is easy to apply to a spigot by an unskilled operator and has very `ifi-rw parts apt to get out of order. It is relatively small so that it may be carried in a doctors lri't as a necessary part 'of his equipment, and,A is ei:-

iective under a Wide range of conditions ot use.

Obviously, my invention is not limited to the particular embodiment herein shown and described.

I'Vhat I claim `and desire to secure by Letters Patent is:

l.' An aspirator comprising, in combina tion, a hollow shell presenting an integral web therein, a Venturi nozzle connected to the web, inlet and outlet openings in the shell axially arranged'with respect to said Vei'ituri nozzle, a nozzle projecting through the inlet opening in said shell and directed toward the Venturi nozzle, a baille member adjacent to said outlet opening within the shell, and means including a swivel clamping device for connecting said shell to a spigot.

An aspirator comprising, inconibination, an elongated hollow shell for axial inlet and outlet openings therein, aVenturi nozzle axially arranged within said shell, a web cast integrally7 with said shell. and carrying said Venturi nozzle, said shell presenting an a'ir exhausting chamber above said Venturi nozzle, a baille below the lower end of said Vlenturi nozzle having a central opening therein, a plug having a tapered project-ion extending into the lower end of said nozzle to cause whirling of the commingled air and waterilowing there through, and ilexible attaching means :tor securing said shell over the mouth of a water spigot, said means having itsV ends connected to the opposite sides of the upper end ot said shell arranged to be looped over the spigot and a spring between its ends to produce a yielding watertight connection.

3. An aspirator comprising, Ain comb-ina tion, a hollow shell having axially arranged inlet and outlet openings therein, a Venturi nozzle between said openings, an ir suction chamber above the Venturi nozzle, a swivel {itt-ing connected to the upper end oi' the 'shell and having a yieldable ypaching therein to ht over' the mouth oi' a spigot, clamping means `on the end for clamping the aspirator to the sidewalls of the spigot, and means yieldably to press the packing against the mouth of the spigot prior to clamping and to' assistin holding it in place` VIn testimony whereof, I have signed my naine to this specification. l e

DOLliE-TTA MAY ACKERMAN.

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