US2985339A - Dispenser for metering predetermined quantities - Google Patents

Description

May 23, 1961 w. G. FISCHER ETAL 2,985,339

DISPENSER FOR METERING PREDETERMINED QUANTITIES Original Filed Oct. 27, 1958 3 Sheets-Sheet 1 FIG, Z INVENTOR5 Warren 6. JZschcr BY Joseph 1 Wzl/(a fliiarney May 23, 1961 w. G. FISCHER ETAL 2,985,339

DISPENSER FOR METERING PREDETERMINED QUANTITIES Original Filed Oct. 27, 1 958 5 Sheets-Sheet 2 Free 3 30/ 55 54; 57 a 55- 55 84 A 21 A Z Y fig 7 35 INVENTORS W02 rrcn G. fi'qcher BY Joseph V. Wllk May 23, 1961 W. G. FISCHER ETAL DISPENSER FOR METERING PREDETERMINED QUANTITIES- Original Filed Oct. 27, 1958 5 Sheets-Sheet 3 INVENTOR$ Warren Gdfi'qchcr BY 56,071 1/. Wzllec DISPENSER FOR METERING PREDETERMINE QUANTITIES WarrenIG. Fischer, Elmhurst, ,andJoseph V. Wilke, .Chi-

cago, 111., assignors to H. GrFischeidz Co., a corporation-of Illinois Continuation of application-Ser. No. 769,706, )ct 27, "1958. This application-Sept. 21, 19 60,-Se r. No.-58 ,877

s Claims; Cl. 222-44 This invention relates to a dispenser and more. particularly to a dispenser for metering predetermined quantities ofliquid or semi-liquid materials. ;In,particu1ar,

the invention provides an accurate. dispenser for use with paints and pigments for paints. 7 In connection with mixing pigments and. color ng materials for paints, it is essentialthat accurate dispensing dispensers, each having one particular color or composition may be used. The nature of the coloring materials and pigments used in paints is such that conventional found to be simple and easy to operate, has a long and useful life and may be easily cleaned.

The invention will be described in connection with the drawings wherein Figure 1 is a perspective view of a cabinet provided with a turntableupon which a ,plurality of'the new dispensing units aremounted.

United States Patent-v of the components be available. Thus, a'collection of i ,materials and conventional construction quickly results in V Figure 2 is a side elevation, with certainpaflsbroken Y away, of a new dispensing unit embodying the present invention.

Figure-3 is a top view with part of the top cutaway.

Figure 4 is a section along line 4-4 of Figure 3: V "Figure 5 is a section along line 55 of Figure 4.. Figure 6 is a section along line 66 of 'Fig ure'S. Figure 6A is a detail from the bottom ofithe 'valve member.

Figure 7 is a section similar to Figure the valveinadifierent position. V

Figure 8 is a section along line '8 8 of Figure 4. Figure 9 is' a detail along line 9 9 of Figure 2.

6 tthsv al Cabinet 10 of any desired construction is provided I 5 turntable 11 upon'which is secured a number of dispensing units. A battery'of such dispensing units may be mar'kedwith letters :of the alphabet or may be marked with any: other indicia to identify the-dispensers with regard to content. a The cabinet and turntable may be of generally conventional construction and no detailed description of; these is believed to be necessary. Turntable 11 may be locked to an indexed position by any suitable means including a handle 12 to keep a particular dispenser in properposi- 'tion. Since all the dispensers aresimilar in construction, "only one will be described in detail. f i

A dispensing unit comprises container 15 of generally cylindrical construction having an open top upon which may resthousing 1 6 containing an electric motor. The

motor has shaft 18 coupled tostirrer rod--19 carrying a number of stirrer paddles 20 and 21. These paddles may -be .of:any desired shape and may be attached to rod 19 in conventional fashion. i

';: Contain.er 15 "has bottom suitably sapertured at :1

extending through the same.

flethylene .resin manufactured by Du Pont.

lthe' center to accommodate bushing -25. Bushing ;25 is Preferably container-15, rod 19, paddles 20 and .21 and bushing 25 and block 27 are of stainless steel or other suitable metal.

In the normal position of the dispenser, as illustrated in Figure 2 for example, container 15 will .be upright with valve block 27 below the bottom of the container. Valve block 27 has horizontal cylindrical .chamber 3.0 Cylindrical chamber 30 has access to the interior of container 15 through bore 31 in the valve block and bore 32 in bushing 25.

The bottom of valve block 27 is hollowed at 34 and the block material is provided with fine discharge .opening 35 providing communicationbetween hollow region 34 and cylindrical chamber ,30. Fitted in cylindrical chamber 30 is valve member 36. Valve member 36 is cylindrical andhas twoannular grooves in which are disposed 9 ringsv38. and 39. These .0 rings are of neoprene or othersynthetic rubber and are disposed onthe valvemember to be on o'ppos ite sides of bore 31 and ass al n n I Valve member 36 is of a plastic material available in the trade under the name Teflon and is a ,tetrafluoro- A related materialwhereinone of the fluorine atoms is replaced by chlorine .is manufacturedand Sold by the M. W. Kellogg Company under the trade mark Kel-F may alsobe .used. These material s are chemically inert and are characterized by a slippery surface to which few if any materials will adhere.

36a is neoprene ring 36b which surrounds the top end of discharge opening 35 and seals the valve member.

, .Valve '36 has one end 42 of reduced diameter and provided with metal retainer '43. Retainer 43 may be locked on'reduced 'end-42 by a pin. Valve member .36 has end portion 45 somewhat larger in d.iameter than the valve member proper. Enlarged portion45 has a shoulder which is adapted to bear against the adjoining face Qf valveblock.

The valve, member is spring biased to a predetermined rotary, opsiti,on by means of coil spring 46 around enlarged portion 45. Coilsp ring 46 has end,47 anchored to a pin or bolt carried by valve block 27 while end 48 of the coil spring isattachedto pin 50 passing transversely through enlarged portion 45 of the valve. member. Pin 50 also servesto retain operating handle 52 having an end disposed within enlarged portion 45.

Referringlto Figures 6 .and' 7.of the drawing, it will be apparent, that'valve member 36.has two radial valve passages 54 and 55 at rightangles to each other, and intersecting at the axis of the valve member. Valve passage 5.4 infthej position illustrated in Figure 6 registers .with bore 31 in the valve block. In this position, companion valve passage 5 5.wil1 register with-internal passage 57in valve block 27. Passage 57in block 27.,leads to chamber. 58 within the valve block. Passage57 maybe made bydrilling block 27 from end face 60 of the blockand thereafter filling the part of the passage between end face 6 a d ambe V In theposition. of the valve illustrated in Figure 7, passages 54 and 55 are turned.90 degrees.so that passage 54 registers with passage 57 and passageSS registerswith discharge opening 35. This will be accomplished by rotation of valvehandle 52 in a clockwise direction '62,.and accommodates the threaded end ofpump-cylinder ,Pate ed y 23, 6

2 and 3.

63. Pump cylinder 63 has end 65 externally threaded of the rod. Pump rod 70 has threaded end portion 72 which engages a threaded recess in knob 73. Nut 74 on 'rod 70 may be used for locking knob 73 in position. Lock ,with pump rod 70. Outercylinder 78 is sufliciently long so that in the extreme in position of pump rod 70, free inner end 79 of outer cylinder 78 will be adjacent valve 8 block 27 but stop short of it.

. Outer cylinder 78 carries at the outside thereof, rigidly attached thereto, detent finger 80 having knife edge 81 (see Figure 3). Rigidly attached to valve block 27 by 'bolts 83 and 84 (Figures 3 and 4) is angle piece 86 carrying scale plate 87 to be visible from the top when the dispensing unit is in its normal position. Angle piece 86 has ratchet edge 88 (Figure 3) for cooperation with knife edge 81 of finger 80. a p

73, finger 80 and pump rod 70 and the like are preferably made of A stainless steel or other suitable metal. ried bypump rod70 described.

The piston caris non-metallic and will now be Pump rod 70 has end portion 90 reduced and has the very end of the rod provided with a blind threaded recess for accommodating bolt 91. Reduced end portion 90 has metal washer 92 hearing against the shoulder formed by the enlargement of the rod diameter. Metal washer 92 .is adjacent plastic piston body 93. Piston body 93 is constructed to provide a plurality of annular flutes 94 which in longitudinal section has the appearance of ratchet teeth. Plastic piston body 93 is made of the samermaterial as valve member 36 and is locked in position upon the piston rod bywasher 95 retained by bolt 91. The dispenser may be carried by mounting plate 95. 1 To use the dispenser, pump rod 70 is disposed in it innermost position as illustrated, for. example, in Figures Knob 73 is turned to clear detent finger 80 from the ratchet teeth-88 of the angle piece. The valve member in its normal spring biased position, as illustrated in Figure 6, connects the interior of container 15 with the pump cylinder ,63. Knob 73 is pulled to retract the piston a desired distance. This distance may be calibrated in terms to volume of pumped material by reference to "scale plate. 87. The pump rod and knob are manipulated as illustrated .in Figure 7, knob 73 is pushed inwardly. The slope of ratchet teeth 88 causes the detent finger to move to an unlocking position and this may be aided by turning knob 73 while-pushing in. The inward movement of the knob results in the pump piston expelling the material within the pump cylinder, the expelled material passing out through opening 35; i

, Assuming that the dispenser has been properly purged l 4 of air prior to use, accurate metering of material is possible. By virtue of the use of the particular plastic materials for the valve and piston members, long continued operation is possible even with highly abrasive materials. The plastic will not retain any material on its surface and can therefore be cle'aned quite easily.

This is a continuation of our abandoned application Serial No. 769,706, filed October 27, 1958.

What is claimed is: l. A dispenser for handling liquid or semi-liquid material, said dispenser comprising a normally horizontal valve block having top and bottom portions in the normal position of the dispenser, said block having a through passage vertically between said top and bottom portions for, dispensed material, said block having an internal horizontal passage one end of which intersects said first-named through passage at an intermediate region thereof and the other end of which extends into a pump chamber, threeway valve means including a manual control, said threeway valve means including acylindrical valve member lying in a horizontal valve chamber which extends through the valve block and intersects the two passages at their intersection, said valve means in one position connecting the top of said vertical passage to said internal horizontal passage and in other position connecting said internal horizontal passage to the bottom of said through vertical passage whereby material can be supplied from the top portion of said valve block to said internal horizontal passage or from said internal horizontal passage to the bottom portion of said valve block, a container for material to be dispensed, said container being disposed at the top portion of said valve block and having the interior of said container connected to the top portion of said through vertical passage in said valve block, a pump cylinder havingone end portion thereof rigidly attached to said valve block with said one end of said cylinder in said valve block chamber, the axis of said pump cylinder and axis of said valve member being horizontal, the manual control and pump cylinder extending forwardly in the same general direction, said valve chamber communicating only with said internal horizontal passage and with said one end of said cylinder, a piston inside of said cylinder, a pump rod rigidly attached to said piston and extending away from said valve block beyond the other endof said cylinder, said pump rod having a handle atthe outer end thereof, means providing a straight scale member having ratchet teeth along one edge thereof and carrying scale indications along the length thereof for disposition parallel to but laterally ofiset from the axis of said pump cylinder, a finger extending transversely of said pump cylinder axis, said finger and scale member forming two parts of a metering combination, means for securing one part of said metering combination to said pump rod,"means for securing the remaining part of said metering combination to a stationary part of said dispenser, said pump rod being rotatable in the pump cylinder to selectively move said finger and ratchet teeth into or out of engagement so that said piston may be retracted away from the valve chamber for a desired distance to provide a desired intake volume for said pump, said three-way valve permitting material to be supplied from the container into said pump and expelled by said pump from the bottom of said block. 2. The construction'according to claim 1 wherein said piston is shaped to provide a series of annularratchet teeth, said piston ratchet teeth encircling the piston to provide a series of annular portions, said annular portions generally sloping toward that end of the piston so that when said piston is pushed inwardly into the cylinder, said annular portions will tend to be straightened and upon reverse movement of said piston, said annular portions tend to yield and slide along the cylinder wall.

- 3. The construction according to c1aim2' wherein said piston is of a fluorinated polyethylene resin to whichforeign materials do not readily adhere} o z 4. The construction according to claim 1 wherein said valve means includes a cylindrical valve member of a fluorinated polyethylene'resin, said valve member having two passages extending radially and intersecting atthe' central region of said member, said valve block'having a cylindrical chamber for accommodating said valve member.

5. The construction accordingto claim 1 wherein said valve means includes a cylindrical valve member of fluorinated polyethylene resin, said member having two passages at right angles to each other extending inwardly and intersecting at the central region thereof for three-way valve operation and 0 rings of neoprene for said valve member, said 0 rings being disposed at spaced regions on said member to provide sealing for said valve member.

6. A dispenser for handling liquid or semi-liquid material, said dispenser comprising a normally horizontal valve block having top and bottom portions in the normal position of the dispenser, said block having a through vertical passage between said top and bottom portions for dispensed material, said block having a horizontal valve chamber extending through said block perpendicular to said through passage and intersecting said through passage at an intermediate region thereof, a plastic valve member disposed in said valve chamber and rockable about the axis of said valve chamber, a manual control for turning said valve member, said block having an internal horizontal passage one end of which is at said valve chamber and the other end of which extends into a pump chamber in said valve block, said valve member having two connected passages extending inwardly from the outer surface so that said valve member can function as a three-way valve for connecting the top portion of said through passage with said internal horizontal passage or connecting the bottom portion of said through passage with said internal horizontal passage, a container disposed at the top portion of said block permitting material in said container to flow into the top of said through vertical passage, 2 pump cylinder having one end disposed in an opening in said valve block at said valve block pump chamber, said pump cylinder extending generally horizontally from said valve block, said valve member and pump cylinder axes being horizontal, said valve manual control and pump cylinder being forwardly of the valve block, a piston within said pump cylinder, said piston being of plastic and having a plurality of annular flutes so that from the side, said piston has the appearance of having ratchet-like teeth, said flutes having the edges pointing toward the valve block, a pump rod attached to said piston and extending away from said valve block beyond the other end of said pump cylinder, said pump rod having a knob at the free end thereof, a sleeve at the other end of said pump cylinder -for providing a bearing for said pump rod, a stationary plate disposed in parallel relation to said cylinder, but laterally offset therefrom, said stationary plate having scale markings along the length thereof parallel to the direction of movement of said pump rod and a finger extending laterally of said plate for cooperation with said scale indications whereby in one valve position said pump cylinder may be filled with a predetermined volume of material from said container and in another valve position, said predetermined volume of material may be expelled from the pump cylinder to the bottom of said valve block.

7. A dispenser for handling liquid or semi-liquid material, said dispenser comprising a normally horizontal valve block having top and bottom portions in the normal position of the dispenser, said block having a through passage vertically between said top and bottom portions for dispensed material, said block having an internal horizontal passage one end of which intersects said first-named through passage at an intermediate region thereof and the other end of which extends into a pump chamber, three-way valve means including a manual control, said three-way valve means including a cylindrical valve member lying in a horizontal valve chamber which extends through the valve block and intersects the two passages at their intersection, said valve means in;one pdsition connecting top of said vertical passage to said internal-l horiz tal passage and in other position connecting/said internal horizontal passage to the bottor'ri of; said through yertical passage whereby material can-besupplied from the top portion of said valve'block to said internal horizontal passage or from said internal horizontal passage to the bottom portion of-said valve block, a container for material to be dispensed, said container being disposed at the top portion of said valve block and having the interior of said container connected to the top potrion of said through vertical passage in said valve block, a pump cylinder having one end portion thereof rigidly attached to said valve block with said one end of said cylinder in said valve block chamber, the axis of said pump cylinder and axis of said valve member being horizontal, the manual control and pump cylinder extending forwardly in the same general direction, said valve chamber communicating only with said internal horizontal passage and with said one end of said cylinder, a piston inside of said cylinder, a pump rod rigidly attached to said piston and extending away from said valve block beyond the other end of said cylinder, an outer cylinder rigidly attached to said pump rod and telescoping said pump cylinder, a finger carried by said outer cylinder and extending laterally therefrom, a straight member rigidly supported with respect to said outer cylinder, said straight member being stationary lyingoutside of and above said outer cylinder and having a straight series of ratchet teeth thereon, said finger cooperating with the teeth, said pump rod being rotatable to move said finger into or out of engagement with said teeth, said stationary member having means providing scale indications thereon readily visible from above so that said piston may be retracted away from the valve block chamber for a desired distance to provide a desired intake volume for said pump, said threeway valve permitting material to be supplied from the container into said pump and expelled by said pump from the bottom of said block.

8. A dispenser for handling liquid or semi-liquid material, said dispenser comprising a normally horizontal valve block having top and bottom portions in the normal position of the dispenser, said block having a through vertical passage between said top and bottom portions for dispensed material, said block having a horizontal valve chamber extending through said block perpendicular to said through passage and intersecting said through passage at an intermediate region thereof, a plastic valve member disposed in said valve chamber and rockable about the axis of said valve chamber, a manual control for turning said valve member, said block having an internal horizontal passage one end of which is at said valve chamber and the other end of which extends into a pump chamber in said valve block, said valve member having two connected passages extending inwardly from the outer surface so that said valve member can function as a three-way valve for connecting the top portion of said through passage with said internal horizontal passage or connecting the bottom portion of said through passage with said internal horizontal passage, a container disposed at the top portion of said block permitting material in said container to flow into the top of said through vertical passage, a pump cylinder having one end disposed in an opening in said valve block at said valve block pump chamber, said pump cylinder extending generally horizontally from said valve block, said valve member and pump cylinder axes being horizontal, said valve manual control and pump cylinder being forwardly of the valve block, a piston within said pump cylinder, said piston being of plastic and having a plurality of annular flutes so that from the side, said piston has the appearance of having ratchetlike teeth, said flutes having the edges pointing toward the valve block, a pump rod attached to said piston and extending away from said valve block beyond the other *7 end of said pump cylinder, said pump rod having a knob at the free end thereof, a sleeve at the other end of said pump cylinder for providing a bearing for said pump rod, a second cylinder disposed outside of said pumpcylinder and rigidly attached to said pump rod to be movable therewith, a stationary plate disposed in parallel relation to said outer cylinder, but laterally ofisettherefrom, said stationary plate having scale markings along the length thereof parallel to the direction of movement of said pump rod anda finger carried by said outer cylinder and extending laterally therefrom for cooperation with said scale indications whereby in one valve position said pump cylinder may be filled with a predetermined ,volume of material from said container and in another valve position said predetermined volume of material may be expelled from the pump cylinder to the bottom of said valve block.

No references cited.

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