US1755318A - Vacuum pump or pulsator - Google Patents

Description

April 212, 1930. L. DINESEN 1,755,318

VACUUM PUMP OR PULSATOR Filed July 6, 1926 3 Sheets-Sheet 1 April 22, 1930. Dm sE 1,755,318

VACUUM PUMP OR PULSATOR Filed July 6, 1926 3 Sheets-Sheet 2 Zaurf/J Dznesen Patented A r. 22, 193

:LAUBTTS Dinner-1N,Or'MmNEAPOLIs, MINNESOTA IvAcUU vLru /ir oru ensues I Application ma July 6, 1926. f iSerial n6. 120,626.

My present invention in" the c nature of a' pumplng' device adapted fOrvariOusdif- I I ferent uses,but particularly designed for use inhospitals' and sick rooms, or physicians i P mp;

offices. The pump has devices adapting it'to operate'at will as a'vaeuum pump, as ap'resor' as a pulsator or device for producing pressure pulsations. W hen adjusted to act as apressure'pulsator,the device isadapted for use as a breast pump;

when adjusted forfaction as a vacuum pump, a it is adapted for use generally for the'production of vaouumlor for drawing fluids such as surplus blood during operations and when adjusted for adapted for [or an air-blowing action is desired;

" fao l I ;A commercial form ofthe device illusi zotrated'in the accompanying drawings, whereinlik'ezcharacters indicate likepart's through- :out theseveral views.

Referring-to the'drawings: g Fig. '1 is a left side elevation showing the improved device in connection with auxiliary devices, adapting itforujse as a vacuum pump and {as .a pulsator';

2 is afrontel'evation of the imprc pved devlce with the receptacles "removed Figf3 is a section taken on, the'line 3 3 of Fi gins a sectionftalienlon the of Fig; 2;

I a Fig. 5 is a section aka 0;; the line a ter i vice, withsome 'partsbroken away and the Fig. 6 is a right side elevation of the de- I head plate of a gearing housing-therein shown removed; I

Fig, 7 is a fragmentary viewin left side, elevation, looking, at'the face of the pump :valve seat, the pumpjbeing, removed;

[Fig 8 is a right side elevation of the pump, showing the valve faces and ports thereof that cooperate with the port-equipped valve seatshown in Fig. 7 and Fig.9 is an axial sectioniofithepump piston,'the piston being shown in elevatlon.

' 'The various parts of the complete'apparatus are preferably mounted on a common base 10 so that they constitute aportable self that affordsa'gear housing.* This gear housaction as a'pressure pump, itis use generally whereverjpressure" 1 The pump cylinder 18is mounted to oscil' p, late a laterally projecting plntle 19 that is passed [freely 'journaled to-the'pedestal ll'preferably by a 'tal." The :cylinder'18 has an upper port 23 contained device. :Rigidly secured on and eX-.

tending vertically upward from thejbas'e 1O 'is a pedestal-like casting .11, which, in its lower portion, has a cylindrical structure 12 V ing'is closed at one side andprovided with an 7 axial bearinghuh 1 3'and at its other side it is prov ded with a removable head platelt. Q I

The upperjportion of the pedestal casting "11 is formed with a pintle passage15 and on its left-hand face with fiat valve faces 16 and '17; The valve face 16 is providedv with laterally spaced ports p and 4'), and the lower face 17 is formed with laterally spaced ports p and o. 'The ports .1) and p are connected" y a conduit 2?, and the ports 4) and o are connected by a conduit '0 all as best shown in Figi 'T-J T andfor that purpose, is provided with 9 through thepintle passage l5 and is self-aligning ballbearing 20 that is countersunkinto the pedestal, 'as'best shown inFig's. 5 4: and 6. The cylinder 18 is formed with valve facesf2l and 22 that engage, respectively, withthe valve faces 16 and 17 of the pedeslocated in its valve face 21 and arrangedto engage alternately with theport's pand' v of the valve seat l6; and said cylinder is providedwith alowerport 24 in its valve face 22, arranged to engagealternately with the ports p, and '0" of the'valve face 17. To hold the valve faces 21- and 22 tightly engaged with 'thei ooperatin g' valve faces 16 and'17,

Jacoiljed spring 25 is applied aroundthe pin- 7 tle 19 and arranged to reactagainst' a nut 26] on theyouterend of said pintlean'd against 9 the hub of the ballbearing,thereby holding said Joallbearing "in position. By adjustments ofthe nut 26, the tension of the spring, 25 may be varied, at will.

The lower port 24:, it will he noted, extends'from the lower end-ofthe cylinder to a point approximately the same distance from i the axisof the pintle 19, as isthe upper cylinder port 23. 'In-its upper he ad,',t he eylind'er 18 is shown as provided with a n pple 27 7 vacuum pulsations.

pump is used as a pulsator,

tion, will open up whenever a vacuum in eX- cess of the maximum desiredvacuum is produced and this is-true Whether the vacuumbe produced by any one impulse or by a progressively increasing suction due to repeated that when the the lower por-' tion of the cylinder is'not used. Underupward movements of thepiston, the suction produced in the lower end of the cylinder will Here it should be stated simply draw in air byjc-ausing the valve, 42 to open, and underdownward movementsof the the plug 87;

piston, the air compressed in the lowerend :of the cylinder will. be slightly compressed 38 or a suitable substitute device thereto.

Pu p,

Moreoventhe plug'37 shouldalso be removed when the pump is used either for pressure or for vacuum. v

If thepump is to be used as a pressurev an air tube should be applied to the nipple 10 but if the pump is to be used as a vacuumpump,.such tube should be applied to the nipple '0 Of course, either a vacuum ing in said cylinder and having a projecting rod connected to said crank, a nipple on the upper end of said cylinder to which a flexible tube may be connected, means for opening and closing said nipple at will, and means for connecting a pressure and '2. The structure defined in claim 1 in furflexible tube at'will to the vacuum ports of said pedestal.

ther combination with means for closing the vacuum port of said pedestal at will, and other means for partially closing or restrict-V ingthe pressure ports of said pedestal.

In testimony whereof I affix my signature.

tube or a pressure tube may be connected to r Y one of the nipples of thereceptacle 4:7 or to any other suitable device, character of the work to be done; I V p It has probably already been noted but is now here specifically stated that, under downward movements of the. piston, the upper according to the 7 cylinder port'23 registers 'withthe upper I vacuum port 11, and flower cylinder port24t. registers with the lower pressure port p, while under upward movements of the pis-- ton, the upper cylinder port 23 registers with the upper pressure port 10, while the lower cylinder port 24: registers with the lower vacv uum port 1;, assuming that, as already'stated, 7

thecra-nk 30 rotates'in a counterclockwise direction in respect to Fig. 1. This produces pressure in the pressure ports 20,10, and vacuum in the'vacuum ports v, v, under both 7 movements of the piston. The oscillatory movements of the cylinder produce the above described alternating valve action.

'WhatIclaimis: I I f 1. In a device of the kind described, the combination of a base, a pedestal secured on said base and formed with connected upper and lower pressure ports and connected upv VLAUBITS I DINESEN. v

per and lower vacuum ports, a pump cylinder 7 pivoted to said pedestal and having upper j and lower ports engageable alternately with the pressure and vacuum ports of said'pedlower portion of said pedestal, a piston work- V estal, a motor-driven crank mounted on the 65

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