US2450295A - Engine primer - Google Patents

Description

A` l.. PARKER ET AL Sept. 28, 1948.V

' J ENGINE PRIMER Original Filed Nv. 27, 1944 L af Patented Sept. 28, 1948 UNITED STATES PATENT OFFICE ENGINE PRIMER Ohio Original application November 27, 1944, Serial No. 565,240, now Patent No. 2,412,532, dated December 10, 1946.v Divided and this application May 15, 1945, Serial No. 593,799

Claims.

In a copending application Serial No. 565,240, filed November` 27, 1944, now Patent No. 2,412,532, granted Dec. 10, 1946 there is shown an engine primer including an indexing, locking and in- -dicating arrangement for use with a selector disk valve. The present application is a division thereof and is directed to the construction of the disk valve and the means for operating the same.

An object o'f the invention is to provide a primer of the reciprocating piston type with a rotary disk valve for selectively distributing the fluid transferred by the reciprocating piston.

A further object ofthe invention is to provide a primer of the above type with spring means for holding the disk valve continuously in contact with its seat.

A further object of the invention is to provide a primer having a disk valve for selectively controlling the discharge yof the iiuid from the primer wherein said disk valve has an outlet axially thereof leading to a radial port in the under face of the valve so that by rotation of the valve said radial port will be selectively connected to the outlet ports of the primer.

A still further object of the invention is to provide a disk valve mechanism for a primer of the above type wherein a check Valve is located in the axial outlet of the valve and so disposed as to open under the pressure of the fluid discharged by the piston.

These and other objects will in part 4be obvious and in part will Ibe hereinafter more fully disclosed.

In the drawing wherein like reference characters refer to like parts throughout the several views:

Figure 1 is a longitudinal sectional view of an embodiment of the present invention.

Figure 2 is a fragmentary longitudinal sectional view illustrating the action of the valve device when disconnected from the piston.

Figure 3 is an end elevati-on illustrating the piston operating handle and associated parts.

Figure 4 is a transverse sectional view taken on the line 5-5 of Figure 1.

Figure 5 is a face view of the valve abutment plate.

The dispensing engine primer in which the novel valve arrangement is incorporated, comprises a cylinder I0, a piston II with an enlarged head portion I2, an operating handle I3 for reciprocating or 'rotating the piston head I2, and an inlet check valve I4 leading into the base of the cylinder I0, which is bell-shaped so as to form 2 an enlarged chamber I6 designed to house the novel selector valve arrangement.

The chamber of the cylinder I0 is closed by a block I'I provided with a plurality of conduits I8 each leading to a plurality of radially directed discharge ports I9. This block I'I may be secured to the annular` end wall of the cylinder I0 by bolts 20, and if desired a gasket 22 interposed between the contacting faces of the block I'I and the end wall of cylinder I0, to thereby provide a duid-tight joint.

The wall of cylinder Ill contains a threaded aperture, which leads into the enlarged chamber I6, and in which is threaded a unit which contains the inlet check Valve I4.

The inner face of the block I'I, is made flat and true, so as to provide a fiat seating surface for the body I5 of the selector valve arrangement, as hereinafter explained.

This valve comprises the body I5 having a central longitudinally extending outlet passage 3| extending therethrough. One end of the valve body I5 has a non-circular reduced portion 33 and the other end comprises a relatively larger headed portion and has bonded thereto a disk 34 of material having lubricating properties, such as for example a graphite composition. This disk 34 is adapted to seat on the flat surface of the block I'I. The disk 34 is apertured centrally at 35, see Figure 4, so as to align with the central aperture 3I defined in the valve body I5, and contains a radial channel 36, leading 01T from the apertures 3| and 35, so as to selectively align with the openings in the block I'I defined by the ends of conduits I8 therein. Each of these conduits communicates with its respective radially positioned outlet.

The valve body I5 is counterbored a substantial part of its length from the graphic seat portion 34 thereof for the purpose of housing in the said counterbore an outlet check valve comprising a ball.35a and a spring 31. The spring 3'! rests in an annular depression 38 dened centrally in the flat face of the block I'I and expands against the surface of the ball 36a to thereby maintain the ball seated over the end of the re' stricte-d portion of the central opening in the valve body I5.

Mounted concentrically around the valve body is a yieldable member, such as a coiled spring 4D. This coiled spring 40, see Figure 2, is always maintained under compression between the Valve body I5 and a spring abutment-plate 4I, one end thereof engaging a shoulder 42 on the seating head of the valve body I5, and the other 3 end engaging with the spring abutment plate ii through which the iiattened end 33 of the valve body l5 protrudes.

The spring abutment plate 4i is Vadapted to engage with an annular shoulder e3 at the upper end of the enlarged chamber i5, and is apertured, as shown in Figure 5, to provide for the passage of fluid to and from the cylinder l around the flat end portion 35i ofthe valve-body I5.

Normally, as shown in Figure 1,when the piston il is locked down, as described in our copending application, supra, the spring abutment plate lil is depressed downwardly away from the shoulder by the piston head l2, but when the piston is rotated by handle i3 to thereby rotate the valve to any selected'open position in registry with one of the channels I8 in the-block I1, then the spring d@ expands and pushes the abutment plate 4i into engagement with shoulder @ii-as shown in Figure 2. This action ofthe spring ed, also pushesthe head of the piston upward, so as to disconnect the same from its connection with the flat end 33 of the valve body i5, so that the piston Ymay now be moved independently-of the valve body l5. Simultaneously Vupon lengagement of the spring abutment plate il with the shoulder (i3, the spring iu continues to press the valve body l5, and seat 3d downwardinto fluid-tight engagement-with the flat seating surface cf block il. Obviously, the spring gli@ should have greater tension than the -opposing suction forces created in the cylinder by the upward movement of the piston i l, so that the valve body l5 will-remain seated on the flat seating surface of the'block rli.

In addition to providing a valve body vI5 with a seating disk 3d of graphitic material, the piston Il may also be provided with a lgraphite ring-50, as shown in Figure'2. With this graphite-ring 59, the pistcnhead I2 does not rub against and score the cylinder Walls when the walls are still dry before iiuid has been drawn in Ythrough the inlet valve M, and thus thefpacking ring 49 on the piston head |2- will wear-much longer.

AThus there is provided a` dispensingI valve unit including Va selector disk valve and an outlet check valve havingparticular utility in engine primers Vofthe reciprocating piston type,-vvhere-'v inthe `valveelements of the unit cooperate to dispense liiuid from any one of a plurality -of outlets selected by rotation vof the unit by the primer and wherein the valve is maintained in Contact with its seating surface, at all times.v

The valve is also provided with a replaceable disk seat having the properties of lubricating a it is rotated, and resilient means adapted to constantly press the outlet end of said body against said iiat seating surface to effect a seal therebetween except through one of said selected out- "lets.

2. A valve for engine primers or the like having Ia at surface containing a plurality of outlet con- .'duits, and a valve mechanism including a body,

-oneendfthereof having a ilat head portion and the l.other end anon-circular relatively smaller 'portion, a Ycheck valve mounted within said body adapted'to permit the discharge of fluid under pressure, means detachably connected to said non-circular endportion adapted to thereby rotate thesaid body, and a disk secured to said fiat headportion and engaging said at seat surface, said. disk having means for radially directing fluid -discharged through the valve in said body into ,any selected one of said outlet conduits in the said at seat surface.

`3. A valve for engine primers orthe like hav- -ingeaat surface containing a plurality of outlet conduits anda valve mechanism including a body, one endthereof having a flat head portion and the otheriend a ynon-,circular relatively smaller portion, a checkrvalve mounted within said body ,adaptedtopermit the discharge of fluid under pressure,V means fdetachably connected to `said `noncircularend portion adapted to thereby rotate the `said -body, and a centrally apertured vgraphite v disk containing a radial channel therein adaptedto radially direct uid discharged from the s aid body .to a selected, conduit in said seat,

l. ,A valve forengine primers or the like having-.a flat surface containing a plurality of outlet conduits, and a valve mechanism including a v 1bo dy,. one Tend thereof having a flat head portion flat seating surface containing the outlets to redisposed outlet, means connected to said body;

for rotating the same, a flat seat carried by said body having a radial channel therein connected to said outlet, a flat seating surface having a plurality of outlet conduits adapted to independently register with the channel in said seat when and .the other end a non-circular relatively smaller lfportion, a `check valvemounted within .said body-adaptedto permit the discharge of fluid ,under pressure, means detachablyv connected fto Ysaid,non-circular. endiportion adapted to thereby rotate the .said,body,1 a disc secured tosaidiiat head portion and engagingsaid at seat surface, said disk having meansfor radially directing uid the valve body in engagement with the said flat seat surface, during all the functions of the valve.

V ,5. Afvalve adapted to be, mounted in a cylinder having an enlarged base portion with an internal annular shoulder therein, for use in .engine ,primersronthe ,like-comprising a body with a central conduit, a flat heat at one end y,of said `bodyra. disk securedto saidhead having a central selected-,outlet conduits.

HELEN M.PARKER. .Erecutrir-for-Arthur L. Parker, Deceased. JOSEPH F. .MELICHAR.

iteferences on following page) 6 REFERENCES CITED Number Name Date T f f d 1,335,112 Line Jan. 11, 1921 lehf rllliswggferrlteferens e rem i the 1,909,755 ceaerstrom May 16,1933 1,942,255 Parker Jan. 2, 1934 UNITED STATES PATENTS 5 2,091,453 crossen May 14,1935 Number Name Date 2,333,934 Jacobson Nov. 9, 1943 1,994,097 Pomey Apr. 21, 1914

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