US2111123A - Dispenser - Google Patents

Description

@11 15, 1938. E. K, MQRLOK 2,111,123

v DISPENSER Filed March 5, 1936 2 Sheets-Sheet l Marh15,-193s. l EKMORLOKW 2,111,123

` DISPENSER Filed March 5, 1936 2 Sheets-Sheet 2 Patented Mar. 15, 1938 UNITED STATES 6 Glaims.

My invention relates to a new and useful dispenser and has for one of its objects to generally improve the construction of devices of this character and which is especially adapted for dispensing thick bodied or syrupy uids in measured quantities.

Another object of the invention is to so construct the dispensing apparatus that any fluid in the spout or nozzle at the end of the ejecting operation Will be withdrawn into the cylinder and returned to the main body of fluid.

Another object of the present invention is to provide a unique dispensing mechanism with an outlet orifice, nozzle or spout of very small dil5 ameter. This is essential to the operation of the device.

A further object of th-e invention is to construct a dispenser in Which the dispensing mechanism may be positioned either obliquely or vertically in the casing.

A still further object of the invention is to provide a specially constructed two-piece plunger rod that permits the cap of th-e uid container to be displaced Without effecting the position of the plunger.

With the above and other objects in view this invention consists of the details of construction and combination of elements hereinafter described and then specically set forth in the 30 claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same- I will describe its construction in detail, referring by numerals to the 35 accompanying drawings, in which:-

Fig. 1 is a view partly in elevation and partly in vertical section, illustrating one form of the .invention.

Fig. 2 is a section on the line 2-2 of Fig. 1, a

4U portion of the plunger rod and spring being left in elevation.

` Fig. 3 is a section on the line 3 3 of Fig. 1. Fig. 4 is a section on the line 4-4 of Fig. 1. Fig. 5 is a similar section when the plunger is 45 depressed.

Fig. 6 is a sectional elevation of a modication.

Fig. 7 is a section on the line I-l of Fig. 6; and

Fig. 8 is a section on the line 8 8 of Fig. 6.

In carrying out the invention as herein em- 50 bodied, reference rst being had to Figs. 1 to 5 inclusive, Il) represents a standard of suitable design including a jaw II to embrace a support I2, such as a counter, table and the like, and having a clamping screw I3 to fasten the standard in 55 place. The standard has a tongue I4 to enter a socket I5 in the casing or body I6 of the dispenser which casing is held in place by a set screw I'I.

The casing I6 is constructed to include a liquid chamber II open at the top for communication with a receptacle I8 which may be made separate- 5 ly from the casing and xed to the latter. They top oi" the receptacle I8 may be closed by a cover or lid I9. The bottom of the liquid chamber I1 communicates with a measuring chamber 20, the outer end of which is formed by a removable screw 10 plug 2l.

A bore 22 is produced in the casing I6 in endwise alignment with the measuring chamber 2IJ and preferably a bushing 23 is tted in said bore and positioned by shoulders 24. A suitable packl5 ing 25 may be located at the outer end of the bushing 23 to prevent leakage. A hole 26 is formed through one Wall of the bushing 23 and an outlet orice or nozzle tube 2l is fitted in said hole and projects through the nozzle or spout pro- 20 jection 28 on the casing and said tube 2'! may be enclosed in a bushing 29 mounted in the projection 28.

A plunger rod 36 is longitudinally slidably mount-ed in the bushing 23 and is urged outward 25 by a spring 3l one end resting against the outer end of the bushing 23, the packing 25 or a portion of the casing and the other end engaging the handle 32 on the outer end of the plunger rod. Said plunger rod has an intermediate reduced por- 30 tion 33 with a longitudinal hole 34 extending from its inner end to a cross hole 35 leading to opposite points on the surface of the reduced portion thereby forming a passageway from the inner end of the plunger rod to the space between the 35 I reduced portion thereof and the bushing 23.

On the inner end of the plunger rod 30 is a plunger or piston 36 which snugly ts the measuring chamber 2li and is adapted to be projected into said measuring chamber by applying pres- 40 sure to the handle 32 and compressing the spring 3|.

While the plunger rod 3U and component parts are retracted, as in Fig. 1, the outlet, spout or nozzle is closed by the large or full sized inner end portion of said plunger rod but the parts are so located or arranged relative to each other that when the outlet is uncovered the plunger or piston 36 have entered the measuring chamber 20. 50 This will close said measuring chamber except for the passageway in the plunger rod thereby causing whatever quantity of liquid that is trapped in the measuring chamber to be forced through the holes 34 and 35 into the space about 55 the reduced portion of the plunger rod, thence through the outlet or spout.

When pressure on the plunger rod 30 is released the spring will return the parts to their normal positions and during the return movement a suction action will be created in the measuring chamber 20, the holes Sil and 35, the space about reduced portion of the plunger rod and the outlet or nozzle. 'I'his suction will draw or suck back any liquid not forced from the nozzle or outlet and thus prevent any drops from dripping onto the dispenser or supporting article.

In the modication illustrated in Figs. 6, 7, and

Y 8, I have shown a base 31 provided with a stand'- ard 38 carrying a casing 39 having a liquid chamber lll above the vertical measuring chamber 4I having its outer or bottom wall formed by a removable screw plug 42. A receptacle 43 may be mounted on the casing in communication with the liquid chamber 48 to provide a continuation of said liquid chamber and provide the desired capacity.

A suitable part of the casing is provided with a vertical bore lil in endwise alignment with the measuring chamber ll and an outlet orifice or nozzle opening i5 leads from said bore at a point intermediate its ends to the exterior of the casing, preferably through a nozzle or spout projection 4S. Y

One element 47 of a hinged or universally jointed sectional plunger rod 48 is slidably mounted in the bore 44 and has a reduced portion 49, the same as previously described, normally located above the outlet 55. Also as described in connection with the other form of the invention, this section 41 of the plunger rod has a longitudinal hole 5D extending from its inner end to a cross hole 5i leading to opposite points on the surface of the reduced portion. On the inner or lower end of the rod section 47 is mounted a plunger or piston 52 of the 'same diameter as the measuring chamber 4| and adapted to be projected into the same.

For purposes of illustration the plunger rod section or element 53 is shown as connected with the section or element ll by a ball and socket joint Sli. Said plunger rod section 53 has a at side 55 to provide an irregular contour which nts a similarly shaped hole in the bottom Wall of the socket 56 formed with the displaceable cover or lid 5l. The section 53 of the plunger rod projects above the cover and has a handle 58 on its outer end. A spring 5@ for retracting the plunger rod and component parts is mounted in the socket and engages the handle 5S. This arrangement permits the cover orlid to be withdrawn from the receptacle upon compression of the spring and then the ball and socket joint between the two sections of the plunger rod allows said cover to move to one side for partially uncovering the receptacle to permit refilling of the latter.

The operation of dispensing mechanism in this form of the device is identical with that described in connection with the i'lrst form illustrating the invention.

Of course I do not Want to be limited to the exact details of construction herein shown and described as these may be varied without departing from the scope of the invention.

Having thus described my invention what I claim as new and useful is:-

l. A dispenser including a casing -having a liquid chamber and a measuring chamber therein in communication with each other, said casing provided with a bore in endwise alignment withV the measuring chamber and further having an outlet leading from a point intermediate the ends of the bore to the exterior of the casing and said outlet positioned a predetermined distance from the measuring chamber, a plunger rod slidably mounted in said bore and normally covering said outlet, said rod having a reduced portion of a length approximately equal to the length of the stroke of the rod to uncover said outlet while the plunger rod is in said measuring chamber, said rod also having a passageway from its inner end to the reduced portion, and a plunger on the inner end of the rod for projection into the measuring chamber and substantially the same distance from the inner end of the reduced portion as the outlet is from the measuring chamber Whereby a predetermined quantity of liquid will be forced through the outlet and the backstroke will cause a suction action in the measuring chamber prior to the plunger rod closing the outlet to withdraw any liquid from the outlet after a dispensing operation.

2. The structure in claim l, wherein the plunger rod is of sectional construction, the sections being connected so that one section can be moved out of alignment with another section.

3. In a device of the character described, a casing having communicating liquid and measuring chambers, said casing also having a bore in endwise alignment with the measuring chamber with an outlet leading therefrom, said outlet being positioned a predetermined distance from the measuring chamber, a plunger rod slidably mounted in said bore and having a reduced portion of a length approximately equal to the length of the stroke of the rod for intermittent registration with said outlet and further having a communicating passageway between its inner end and the reduced portion, and a plunger on the inner end of said rod for projection into the measuring chamber prior to the plunger closing the outlet whereby during the whole time the plunger is in the measuring chamber the reduced portion of the rod is in registration with the outlet.

4. A dispenser vcomprising a casing having communicating liquid and measuring chambers, the latter being in a vertical position, a removable screw threaded plug forming the bottom wall of said measuring chamber, said casing also having a vertical bore in endwise alignment with said measuring chamber and an outlet leading from the bore to the exterior of the casing, a sectional plunger rod having the sections connected by a ball and socket joint, one of said sections slidably mounted in the bore and normally covering the outlet and having a'reduced portion to uncover said outlet and further having a passageway from the inner end thereof to the reduced portion', a plunger on the inner end of said rod section for projection into the measuring chamber to force liquid therefrom through the outlet and assist in creating a suction action to withdraw fluid from the outlet during the back stroke, a displaceable cover on the liquid chamber, the Yother section of the plunger rod extending through said cover, and a spring between said cover and a portion of the plunger rod to urge said rod outward and the cover inward.

5. A dispenser comprising a casing having communicating liquid and measuring chambers, the latter being in an oblique position, a removable screw threaded plug forming the outer end Wall of said measuring chamber, said casing also having an oblique bore in endwise alignment with said measuring chamber and an outlet opening leading from the bore to the exterior of the casing, a bushing mounted in said bore and having a hole through one wall and registering with the outlet opening in the casing, a nozzle tube in the outlet opening and the hole in the bushing, a spring retracted plunger rod slidably mounted in said bushing and normally covering the nozzle tube and having a reduced portion to uncover said nozzle tube when the plunger is moved inwardly, said plunger further having a passageway from its inner end to the reduced portion thereof, and a plunger on the inner end of said rod for projection into the measuring chamber to force liquid therefrom through the -nozzle tube and assist in creating a suction action to withdraw any fluid from said nozzle tube during the retraction of the plunger rod.

6. A dispenser including a casing having a liquid chamber and a measuring chamber therein in communication with each other, said casing provided with a bore in endwise alignment with the measuring chamber and further having an outlet leading from a point intermediate the ends of the bore to the exterior of the casing and said outlet positioned a predetermined distance from the measuring chamber, a plunger rod slidably mounted in 'said bore and normally covering said outlet, said rod having a reduced portion of a length approximately equal to the length of the stroke of the rod to uncover said outlet when the plunger rod is in said measuring chamber, said rod also having a passageway from its inner end to the reduced portion, and a plunger having an operating face area equal to the cross sectional area of the measuring chamber mounted on the inner end of the rod and substantially the same distance from the inner end of the reduced portion as the outlet is from the measuring chamber for projection into the measuring chamber whereby the entire amount of liquid in said measuring chamber will Vbe ejected and thus dispense a positively predetermined quantity during a dispensing operation and the back stroke of said plunger causing a suction action in the measuring chamber prior to the plunger rod closing the outlet to withdraw any liquid from the outlet after said dispensing operation.

EDWARD K. MORLOK.

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