US1657746A - Pump - Google Patents

Description

Jan. 3l, 1928.

J. vB. GARBr-:R

PUMP

Filed Feb. 13, 1925 3 Sheets-5heet l Jan. 31, 11928. 1,657,746

J. B. GARBER PUMP Filed Feb.- 13, '1926 3 Sheets-Sheet 2 5 1an. 3l,

J. B. GARBER PUMP Filed Feb. 13. 1925 3 Sheets-Sheet 3 t n a v n atto: uw

Patented Jan. 3l, 1928.

UNITED STATES n 1,657,746 PATENT OFFICE;

JESSE B. GARBER, F SALEM, OHIO, ASSIGNOR T0 THE DEMING COMPANY, OF SALEM, OHIO, A CORPORATION 0F OHIO.

PUMP.

Application led February 13, 1926. Serial No. 88,005.

This invention is directed to improvements in piston pumps. Such pumps usually embody check valves disposed at the inlet and outlet ports thereof which are respectively responsive to suction and pressure upon the operation of the piston. Such valves usually entail the embodiment of a number of accurately machined partsin the pump, eventually resulting in an inefficientln operation of the pump due to wear. The ingress of extraneous matter carried into the pump by the fluid passing therethrough 'also frequently interferes with -the accurate seating of the valve members. The general object of my invention therefor is the provision of a -valve mechanism in the form of a simple unitary structure,

which in my present embodiment 'is illustrated as being particularly adaptable for use in oscillating piston pumps and which mechanism is of such character as to eliminate the use of the usual check or poppet valve members.

A further object of my invention is the provision of an losc-illating'pump embodying a minimum number of'parts, economically formed, which will efficiently function irrespective of the ipresence of extraneous solid matter in the lfluid passing through the A still further object of my inventionis the'provision of a simple valve mechanism for a pump of the character referred to which'may comprise a single member for controlling the pump inlet and outlet ports.

Other objects of my invention will hereinafter be set forth in the following description referrin to the accompanying drawingsillustrating a -preferred form thereof.

' of the casing as will b e hereinafter described.

l The essential characteristics are summarized in the claims.

In the drawings, Fig. 1 is a perspective view of an oscillating pist-on pump embodying the features of my invention. Fig. 2 is a perspective view of a member comprising all'of the valve mechanism of the pump. Fig. 3 is a perspective view of the pump piston. Fig. 4 is a cross-sectional elevation taken through the center of the pump. Fig. 5 is a cross-sectional view taken substantially along the line 5-5 of Fig. 4. Fig. 6 is a cross-sectional view similar to the view shown in Fig. 5 but illustrating a shifted position of the valve mechanism. Fig. 7 is a crosszsectional view 'similar to the view' -valve decks or valve carrying membersl with at least two valve members operatively attached to each deck.'

My invention contemplates the use of a simple valve -mechanism which may also comprise the casing partitioning means and in Figs. 4 and 5, I show the pump as comrising the usual casing 10 having a suitable ore for receiving the `oscillating piston 11 and a' partitioningl meansin the form of an oscillating valve member 12. The piston is provided with a shaft 14 and the-=casing is suitably formed at one end as shown at 15 to afford Aa bearing for properly supporting the piston shaftv 14. A stuffing box gland 16, packing sleeve l7vand a `nut :18 carried. by the casing serve to pack. the shaft 14. An operating handle 2O is shown in Fig. 4, mounted on an extension of the shaft 14 and operating the piston 11. The opposite end of the casing may be sealed by a closure disk 22, having formed at its center a cup-shaped portion 24 to receive a spring member 25 at its inner end, bearing against the valve member 12 to urge the latter member into contact with'the end of the piston and an end wall The closure member 22 may be secured to the casing by any suitable means such as boltmembers, indicated at in Fig. 6.

The casing may be provided with an upper threaded branch 9 in communication. with the interior of the casing throu( h an outlet port 10h and a lower threaded ranch 9a 1n communication with the interior of the cas- These. passegeivafs extend in; a. cnisscross' arms. contactat: theA ends thereon with thcbore of the casing and oscillaie; incompart-- ments 31 and 32. which are formed Within the pump casing by the peculiar constructiom of the valve member 12. The sides of the arms are accurately ftirmed'tocontact'- with the end walls of the compartments and the passageways serve, to establish communication between the-.two compression sides and thensluction. sides of the piston arms when the piston oscillated.

'Ehe h ub surface ofthe piston is preferably c oncentrically formed to' accurately-'fit the vglvemembei 12 whereby leakagebet-Ween the. casingz compartmentsl isprevented and tlievalvemember, as shown in Fig: 24-may QOIYPYSQ indctail, a disk port-ion 40 -oi sutiiqieut diameter to. accuratcflfv [it v,the bored of tliecasing and upon this clisk40 .-v pre-fer to integrally forni' Casin -I partitioning Wallis 4 1 a ud` 4;2'; Thesev'iralls may-be offsfuoh shape that radial'v ends thereofw'ill, Overl-ieor be disposed at, either side bytheoutletpont1()h and the pair of" inlet ports 10 a-vnd'- the-Wall 41j is accordingly of; such-44 shape aswillprovide two inlet passageways 41-.i Whenthe disk. member-@fis rocked o r oscillatedi wlthin the pump casing,- one offits' passagewaiys is alternately. brought into registrationwith one offthe, inlet'- ports' 10;! and a petition-412 ot' the wall 42l is alternately shitedito' be disposed to one-or-the otherside offthegoutlet port 10". The wall?42'is`underout'annu1ar- 1y, .as shown; at '45A'. whereby.'l communication may be establishedbetween-the outlet.- port 10b andfeitherone, of the compartments-31 and32. The innernradialpends ofi-the partition Walls 41 and 42 are? concentrioal'l-y formed' relative to the-centerofthe-.disk 40 to, accurately fitlthe concentnioportgionfoii the piston hub, as stated` whereby-leakage from onel compartment' tothe other-of the." pump is prevented;v It Will'thusbe' seen that when the pump piston is osci'llated, pressure 1s brought to bear on the-liquid. presentini the compartment in alternateannular directions thus causingv the disk member to. oscillate within the pump casing. and.- I.- provid'e; means for limiting-this oscillating -movementffg be valve memberv 12 relativeto-the-piStQn1move ments which may' comprise a pini on screw member 4.6l (see Fig.- 4), extending'iuW-ardly from an en d wall ofthe casing into-a cavity 42",` formed in the-wall 42 of thedisl; member 40.

The width ot the walls'l 41 and,V 42 is accurately defined to-equal the Widthof; the pump arms 11- and 1'1"- whereby-the action of the sprinf:r 25 upon the valve? member will' urge the dislt portion Vof the. latter against the end of the pistony and thew-all portions 41 andv 42 against the innen end iizjall" ot the casing thus preventing undue leakage-ot the fluid between the valve mehr bers, the piston and the casing as the piston and Valve-memben are. oscillatcd. The operationof, thepump as follows:

Assuming"r the piston to be in th(` position .shown in Fig. 5 with the arm 11" in its maximum upward position and the valve meint-)ershiftedz tovhhe right to a maximum position determined by the stop pin 46; then upon a reverse movement ot the pist-on, the arm lbltfhe'reo will start upwardly-andl the arm 11 downwardly and Huid' presentin the compartnient31 on the under side ot. the arm; 11'a will become compressed` Part of this-Huid" Willesc'ape through the passage but'- sufficientpressure will be exertedupon the wall41: 0ftheiva-lvemember-to cause ift-to be shift-edf tothe` position shownin Eig.- 6. thus exposingtiie-outlet' port 10'"-to the compartment 32 andl causing the rightrh-and: inlet; passageway L11h-of.- the valueA mombento register withthe; iniebporb 10"@ '-Ilhesarmr 11b will thus draxv.- the' fluid'into. the: chaimber 3 2' through-fthe righthand port-1210- and force the fluidl comingffronr theompartment {R11- through the: outlet-A por-t 10b duringfits upward movement. When-the movement of the arm' lip-'aften ithasreached its;v maximum upwand .-movement, is reversed` the cycle of pumping. actions. is; repeated. inthe compartmentv 31 bythe arm 113-..

It will be evident from the foregoingl description. ofi-the embodiment of m'y-'mvention herein-illustrated. that only two: moving parts* are embodied in the pump-fthe oscillatingpist'on-andi tlie. oscillating valve member? and: the' form. o'these .two I'nembers may such-that they may; readilyand; accurately be manufactured in an economical.- man nen't'o. operate.v in.. a. casi-neef simple design. Having thus.- described my.. invention,A I claim;

1.. Ina pump, the combinatioxn of acasing having aninlet andi an out-let, a piston -disposed within the casing, an oscillatingT valve means for alternately opening and clos-ing; saidinlet.v and: outlet` said valve means havinga--d-isc-like pontziomextending acrossthea-en'd:ofithapiston, and means for urging the piston and valve meansfintond- -wise'- Contact.

- tablishing-communication betweenthe .chambers, means for oscillating' the: piston and means forpressingVV the. valve means constantly against the end of the piston.

3. In a pump 0fthe character described, the combination of a-.casingr having anlinletand an outlet, an oscillating piston within the casing, an oscillating` valve means disposed within the casing to control said inlet and outlet upon an oscillating movement of the piston, said valve means comprising means for dividing the interior of the casing into two compartments and having a disc portion contacting with the end of the piston, said casing having a cylindrical bore, said valve means and the ends of the piston being formed to contact with said bore, and the straight ends of the piston rubbing against the disc portion.

4. In a pump of the character described, the combination of a casing having an inlet and an outlet, an oscillating piston disposed within the casing, said casing having a cylindrical bore in contact with the ends of the piston, an oscillating valve member contacting with a hub of the piston, and forming compression chambers within the casing said valve means being operative to alternately open and close said outlet and inlet of the casing, the valve means including a disc portion contacting with the piston and an outer casing closure member lnclosing the valve member and piston, and a spring shoving the valve member toward the pist0n.

5. In a pump, the combination of a casing having an inlet and an outlet, two valve members respectively connecting the inlet and outlet` a disc carrying the valve members, an oscillating piston havin a pair of wings, one lying at the left 0 one valve member, and the other at the right of the other valve member, the end of said piston rubbing against said disc, and a spring pushing the disc against the piston.

In testimony whereof, I hereunto allix my signature.

JESSE B. GARBER.

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