US3622048A

US3622048A - Dispenser for viscous liquid and pastes

Info

Publication number: US3622048A
Application number: US68816A
Authority: US
Inventors: George X Batlas
Original assignee: Individual
Current assignee: Individual
Priority date: 1970-09-02
Filing date: 1970-09-02
Publication date: 1971-11-23
Anticipated expiration: 1988-11-23

Abstract

A vertically disposed cylindrical casing for storage of viscous liquids and pastes has a discharge at the lower edge portion thereof normally sealed by a spring-actuated valve, a recess in alignment with said discharge, and a vertically reciprocating plunger movable in and out of said recess for force feeding of material through the discharge against the action of said spring. The plunger is actuated through a cam means carried by a radially disposed drive shaft extending through the casing wall. The drive shaft through bevel gears also drives a wiper blade, rotatable axially of the casing, with the drive so synchronized that the wiper blade passes over the recess when the plunger is in an upwardly reciprocated position. The drive shaft can pass over said recess, in which event the cam engages a follower which is an integral extension of said plunger, or the drive shaft can be disposed perpendicularly to such first mentioned orientation, in which event the cam engages a follower pivotally supported in the casing and operatively engaging said plunger.

Description

United States Patent [72] Inventor George X. Batlas 21-26 33111 St., Astoria, N.Y. 11105 1211 Appl. No. 68,816 22] Filed Sept. 2, 1970 [45} Patented Nov. 23, 1971 Continuation-Import of application Ser. No. 867,138, Oct. 17, 1969, now abandoned. This application Sept. 2, 1970, Ser. No. 68,816

[54] DISPENSER FOR VISCOUS LIQUID AND PASTES l9 Clalms, 13 Drawing Figs.

52 u.s.c1 222/181, 222/232, 222/233, 222/409 [51 1 Int. Cl B67d 5/06 501 Field of Search 222032 259,

[561 References Cited UNITED STATES PATENTS 1,467,95l 9/1923 Rosenberger 222/232 1,951,656 3/1934 Haffling 248/224 2,430,192 11/1947 Silvius I 2,73l,l73 l/l956 Harrigan Primary E.raminerRobert B. Reeves Assistant Examiner--Larry Martin Anorney- Howard E. Thompson, Jr.

ABSTRACT: A vertically disposed cylindrical casing for storage of viscous liquids and pastes has a discharge at the lower edge portion thereof normally sealed by a spring-actw ated valve. a recess in alignment with said discharge, and a vertically reciprocating plunger movable in and out of said recess for force feeding of material through the discharge against the action of said spring. The plunger is actuated through a cam means carried by a radially disposed drive shaft extending through the casing wall. The drive shaft through bevel gears also drives a wiper blade, rotatable axially of the casing, with the drive so synchronized that the wiper blade passes over the recess when the plunger is in an upwardly reciprocated position. The drive shaft can pass over said recess, in which event the cam engages a follower which is an integral extension of said plunger, or the drive shaft can be disposed perpendicularly to such first mentioned orientation, in which event the cam engages a follower pivotally supported in the casing and operatively engaging said plunger.

PAIENTEDNH 23 ml 3,622,048

sum 2 OF 4 x FIG. 2

5 FIG. 5

INVENTOR 650 955 A- EATL r95 ATTORNEY DISPENSER FOR VISCOUS LIQUID AND PASTES This application is a continuation-in-part of application Ser. No. 867,l38, filed Oct. 17, 1969 now abandoned.

This invention relates to dispensers for viscous liquids and pastes of the type used as hand cleaners, skin protectors, skin conditioners and the like, particularly in public rest rooms and machine shops and other industrial and institutional facilities. More particularly the invention relates to dispensers of the type described adapted for the controlled feeding of measured amounts of viscous materials.

Various types of dispensers for viscous materials of the type described are known and used. Some, which might be termed continuous feed devices, will deliver material as long as a feed mechanism is actuated by the user. Such devices tend to be sloppy, due to leakage following actuation, and moreover they are inherently wasteful since the users will generally take far more of the viscous material than is actually needed. The tendency, therefore, is to employ an intermittent type of feed whereby the user, upon actuation of a feed mechanism, is delivered a measured amount of the viscous material. Available devices which will provide such intermittent type of feed are generally quite intricate in construction, with a result that both initial cost and service and repair costs are excessive.

A special problem with the intermittent feed type of device is the provision of the optimum quantity discharge of a particular viscous material, a factor which can vary widely, depending on the nature and composition of the viscous material. Some available intermittent feed devices include means for adjusting the quantity discharged per actuation, but the use of such adjustable means has been found unsatisfactory due to human error in making the adjustments, and the difiiculty in having the adjustable means accessible and at the same time tamperproof. There is a strong tendency, therefore, to employ dispensers which are tailor made" to handle a particular viscous liquid or paste product and deliver the desired amount thereof in each actuation, but it will be apparent that this excessively multiplies the number of different dispenser types of models that must be stocked and available.

The new dispenser in accordance with the present invention overcomes the problems above described by providing a sturdy and dependable feed mechanism, which can be economically produced, which is readily inserted and removed as a unit from the dispenser, and in which the setting or resetting of the quantity of material discharged per cycle of operation can be effected by selection and change in one or more components of the mechanism.

In certain of its broader aspects, the new dispensing device in accordance with the present invention comprises a vertically disposed, generally cylindrical, container having sidewalls and bottom wall and a removable top closure, a recess in the bottom wall in close proximity to the sidewall communicating with the discharge opening, a plunger in alignment with said recess and supported on vertically oriented slide means for reciprocating movement into and out of said recess, axial bearing means on the bottom wall rotatably supporting a wiper blade in close proximity to the bottom wall, a drive shaft radially traversing said axial bearing and protruding through said sidewall, with actuating means for said drive shaft disposed externally of the device, interfitting means converting rotary movement of said drive shaft to rotary movement of said wiper blade, a cam keyed to said drive shaft, follower means cooperating with said cam and in engagement with said plunger to impart reciprocating motion to said plunger in the rotation of said drive shaft, and the orientation of said cam on said drive shaft being such as to support said plunger in a fully raised position, and above said wiper blade, as the'wiper blade is passing over said recess.

When the drive shaft is oriented to pass radially above said recess, the cam follower means can be directly connected with said plunger. On the other hand, when the drive shaft is disposed perpendicularly to a position of alignment with the recess, the cam follower should be an independent member pivoted in said casing and having a movable coupling with said plunger.

The structure and novel features of the new dispenser will be readily understood from a consideration of the following description taken together with the accompanying drawing in which preferred adaptations of the invention are illustrated with the various parts thereof identified by suitable reference characters in the several views, and in which:

FIG. 1 is a vertical sectional view of the dispenser substantially on the broken line 1-1 of FIG. 2.

FIG. 2 is a horizontal sectional view substantially on the line 2-2 of FIG. 1, with part of the structure broken away to reveal underlying structure.

FIG. 3 is a fragmentary sectional view substantially on the line 3-3 of FIG. 2.

FIG. 4 is a fragmentary view similar to FIG. 1 showing the parts in a different phase of the operation cycle.

FIG. 5 is a fragmentary sectional view through the discharge assemblage as shown in FIGS. 1 and 4, and illustrating a modified form of construction.

FIG. 6 is a sectional view of the drive shaft substantially on the line 6-6 of FIG. 4.

FIG. 7. is a sectional elevation view through a modified form of dispenser in which the drive extends over the discharge means.

FIG. 7a is a fragmentary sectional view substantially on the line 7a7a of FIG. 7.

FIG. 8 is a fragmentary elevation view substantially on the broken line 88 ofFIG. 7.

FIG. 9 is a fragmentary plan view, partially in section, taken substantially on the broken line 9-9 of FIG. 8.

FIG. 10 is an enlarged detail view of the discharge means shown in FIG. 7.

FIG. 11 is a fragmentary view of the casing and mounting bracket assemblage taken substantially on the broken line 11-11 ofFIG. 7; and

FIG. 12 is a fragmentary sectional view substantially on the line 12-12 of FIG. 11 illustrating the interlock of the bracket and easing.

As shown in FIGS. 1 to 6 of the drawing, one form of dispenser in accordance with the present invention comprises a casing 10 having generally cylindrical sidewalls 11, a bottom wall 12, and an open upper end 13 receiving a removable cover 14 suitably having interlocking means as indicated at 15 for securing the same to the casing 10. The bottom wall 12 is provided, adjacent the sidewall 11, with a shallow cylindrical recess 16 on the inner surface thereof and a protruding, generally tapered spout 17 on the outer surface thereof. The recess and spout can be formed integrally with the bottom wall 12, as shown in FIGS. 1 and 4, or can be formed as a separate part mounted in an aperture 12a in the bottom wall 12 as shown in FIG. 5.

The spout 17 has a reduced passage 18 connecting the recess 16 with a lower recess 19, in which is mounted the projecting upper end 20 of a spout tip 21. The tip 21 has a downwardly flared discharge orifice 22 having a minimum diameter approximately the same as the diameter of the passage 18 registering with a larger bore 23, slightly flared at its upper portion, housing a ball valve 24 which is normally supported in sealing engagement with the passage 18 by a coil spring 25. The tip 21 can be permanently mounted in the recess 19 or have detachable threaded engagement therewith, as shown in FIG. 5.

The flare at the upper end of the bore 23 provides for free passage of viscous material around the ball 24. The flare in the discharge orifice 22 on the other hand aids in keeping the orifice 22 clear. Any residue tending to adhere to the orifice following one use of the device is readily dislodged from the flared or tapered surface in the next use of the device.

The recess 16 in cooperation with a vertically reciprocating plunger 26 constitute means for feeding a measured amount of viscous material through the passage 16 and discharge orifice 22. The plunger 26 and the drive mechanism therefore are mounted in a ringlike support frame 27 having a generally cylindrical wall portion 28 spaced inwardly of the sidewall 11 and a radial upper flange 29 which extends to the sidewall 11.

The frame 27 seats within the casing 1 at the juncture of the sidewall 11 and bottom wall 12, as clearly shown in FIGS. 1 and 4, and is keyed in predetermined orientation within the casing by notches 30 in the lower edge of the wall 28 engaging upwardly protruding lugs 31 on the bottom wall 12. The frame 27 is detachably supported in position by a plurality of screws or similar fasteners 32 entering protruding lugs 33 on the bottom wall 12.

The frame 27 has a radial offset 34 in alignment with the recess 16 having opposed vertical ribs 35 forming channels 36 for slidably receiving vertically disposed lateral extensions 37 on the plunger 26 to guide the same in its reciprocating movement. At diametrically opposed positions spaced 90 from the offset 34, the frame 27 has radially extending bearing portions 38, 38', which as shown in the drawing may extend above the flange. Equally spaced from the bearings 38, 38' in the direction of the offset 34, and somewhat below the bearings 3 38 are other bearing portions 39 which loosely support an idler shaft 40.

Extending between the bearings 38, 38' is a drive shaft 41 having keyed thereto centrally of the casing 10 a bevel gear 42 and spaced therefrom a cam element 43. The keying can be effected in various ways, but for purpose of illustration the drive shaft has been shown as having a square cross section and engaging square apertures in the gear 42 and cam 43. One end 41a of the drive shaft fits through an aperture 44 in the bearing 38 which is of a dimension to freely receive the diagonal dimension of the shaft 41, and terminate short of the wall 11 of the casing. The other end 41b of the shaft fits in an adapter 45 which freely rotates in the bearing 38. The shaft 41 is driven by a hand crank 46 externally of the casing 10 having a hub 47 extending through an aperture 48 in the sidewall 11 and freely rotating in bearing 38. The hub 47 is recessed to receive the square shaft 41, and the crank 46 is secured to the shaft 41 by a suitable fastener as indicated by the screw 49. A backing member 50 is mounted on the shaft 41 engaging the inner face of the bearing 38, and a sealing washer 51 is disposed between the crank 46 and sidewall 11 adjacent the aperture 48.

The backing member 50, gear 42, cam 43 and adapter 45 are positioned on the shaft 41 by split rings or C clips 52 engaging corner notches 53in the shaft 41 as shown in FIG. 6.

Mounted on the idler shaft 40 by a central hub 54 is a rocker member 55 having at one end a cam follower 56 engaging the cam 43 and at the other end an elongated slot 57 closely but slidably engaging a transverse pin 58 on the plunger 26', and it will be noted that in each cycle of rotation of the drive shaft 41 the rocker member will raise the plunge 26 from the position shown in FIG. 1 to the elevated position shown in FIG. 4 and return it to the position shown in FIG. 1. Also in each cycle of rotation of the drive shaft 41 the bevel gear 42 drives a vertically disposed bevel gear 59 having a radially projecting blade 60 through one complete revolution. The bevel gear 59 is mounted on a central upward projection 61 on the bottom wall 12, and the blade 60, which feeds viscous material to the recess 16, is oriented to pass the recess 16 when the plunger 26 is in the fully raised position as shown in FIG. 4.

Various configurations of cam and follower can be employed to impart the desired movement to the rocker 55. In the adaptation illustrated in the drawing, the follower 56 comprises an elongated loop having parallel long edges 62 in constant engagement with a circular cam 43 eecentrically mounted on the shaft 41. In order to strengthen the follower 56, the loop structure is partially closed at one side thereof by webs 63.

The dispenser as above described is complete and ready for use by merely filling the casing with a paste or viscous liquid. It is frequently desirable however to refill a device of this type by inserting a container of the viscous material. In such event, it is desirable to include a supplemental ring member 64 having a cylindrical wall portion 65 resting on the frame 27 in substantial alignment with the wall 28 thereof and having a generally radial, but slightly upwardly flared flange 66 bearing against the wall 11 of the casing. The wall portion 65 has a eutout 67 in alignment with the plunger 26 and other cutouts 68 in alignment with the bearings 38, 38' which serve to properly position the cutout 67. The flange 66 thus provides firm support for an inverted container 69 within the casing 10 while preventing any contact between the container 69 and the moving parts of the dispenser.

In FIG. 1 of the drawing the casing 10 has been shown as having on the wall opposite the spout 17 a protruding member '70 to facilitate mounting of the casing on a wall or other vertical support. It will be understood, however, that any conventional mounting or suspending means can be employed to locate the dispenser in a position convenient for use.

It should be noted that when the crank 46 is removed the entire working mechanism can be removed from the casing by simply loosening the screws 38. This permits easy repair or replacement of damaged parts and also permits easy change of the quantity of discharge of viscous material in each cycle of operation. Thus, for example, by increasing or decreasing the size of the cam 43 and correspondingly changing the spacing of the parallel sides 62 of the cam follower 56 the vertical movement of the plunger 26 can be varied, and the degree of penetration of the plunger 26 into the recess 16 controls the quantity of viscous material that will be discharged.

The plunger 26 should fit quite closely in the recess 16 in order to maintain the desired feed pressure to depress the ball valve 24. With very heavy liquids and pastes, however, a desirably close fit ofthe plunger 26 in the recess 16 may retard upward movement of the plunger after the ball valve 24 has reseated. Thus it may be desirable to employ in the plunger the slightly modified construction shown in FIG. 5, wherein the plunger has a small orifice 71 normally closed by a valve 72 supported at the lower end thereof as by a pin 73 and spring mounting 74. Alternatively, the plunger 26 could be provided with a smaller version of the ball valve 24 and coil spring 25 shown in the spout tip 21.

When employing the modified structure as shown in FIG. 5, it should be noted that the orifice 71 should not be made too large. In other words, a noticeable retarding of the upwardly movement of the plunger 26 by what might be termed a vacuum effect is desirable as an indication to the user when a cycle of feed of viscous material has been completed. If a dispenser is used infrequently, this vacuum" effect will subside following each use by seepage of viscous material between the plunger 26 and walls of the recess 16. When the dispenser is subject to frequent use, however, and such seepage may not counteract the vacuum" effect between uses, the presence of the orifice 71 and valve 72 on the plunger will provide for quick counteraction of the vacuum effect and thereby eliminate excessive strain on moving parts of the device.

The adaptation of the dispensing device, as shown in FIGS. 7 to 12, is a more streamlined and simplified form of device, wherein substantially fewer and less costly parts provide for the intermittent controlled feed of pastes and viscous liquids with the same effectiveness as the adaptation shown in FIGS. 1 to 6. Because of its fewer parts and more economical construction, the adaptation shown in FIGS. 7 to 12 constitutes a preferred form of device for commercial production; and the illustrations in FIGS. 7 to 12 include a number of structural details which contribute to making the device relatively tamperproof, and hence particularly suited for use in public rest rooms and the like.

As shown in FIGS. 7 to 12, the dispensing device comprises an essentially tubular vertically disposed casing 75 having a sidewall 76, a bottom wall 77 and a removable top wall 78 interfitting with an annular groove 79 in the upper edge of the sidewall. The bottom wall 77 is provided with an essentially cylindrical axial bearing 80 protruding upwardly from the inner surface thereof and a recess 81 ofgenerally circular contour and registering frustoconical extension 82 extending into a discharge tip 83 protruding below the bottom wall 77. A plunger 84 is supported on spaced vertical guides 85 protruding from the sidewall 76 for vertical reciprocating movement into and out of the recess 81.

A drive shaft 86 extending through an aperture 87 in the sidewall and carrying an offset handle 88, outside the device, extends to and slightly beyond the bearing 80 with a cylindrical end portion 89 of the drive shaft interfitting with notch means 90 in the bearing 80, as clearly seen in FIG. 7a. The central portion 91 of the drive shaft is of essentially square cross-sectional contour slidably supporting a unitary member 92 having at one end thereof an eccentric cam 93 interfitting with a cam follower 94 integral with the plunger 84, and having at the other end thereof a bevel gear 95 which interflts with a horizontally disposed bevel gear 96 which rotates about the bearing 80 and carries a radial wiper blade 97.

The upper portion of the bearing 80 is provided with a shallow recess 98, as clearly shown in FIGS. 7 and 7a, for receiving a disc member 99 which is secured in place by cementing, ultrasonic welding or the like to prevent lifting movement of the cylindrical end 89 of the drive shaft. The protruding end of the drive shaft is provided with an annular groove 100 for receiving a C" clip ofthe type shown in FIG. 6 for supporting the drive shaft 86 against axial displacement.

The member 92 is positioned on the drive shaft 86 by means of an enlargement 86a at the outer end thereof. In order to avoid leakage of paste or viscous liquid through the aperture 87, the handle 88 is provided with an annular flange 101 interfitting with a protruding flange 102 on the sidewall 76, the flange 102 being spaced from the drive shaft to provide an annular cavity receiving a conventional slip seal member 103.

In assembling the device, it will be apparent that the bevel gear 95 should be engaged with the bevel gear 96 to orient wiper blade 97 in the position shown in FIG. 7 when the plunger 84 is in the fully depressed position shown in FIG. 7. With the parts so oriented, rotation of the drive shaft through l80 will raise the plunger 84 to its fully elevated position, permitting the blade 97 to pass over the recess 81, forcing paste or viscous liquid into said recess, while the plunger is thus elevated.

As more clearly seen in FIG. 10, the discharge tip 83 has a threaded recess 104 receiving a tip extension 105 having a passage 106 therethrough registering with a restricted cylindrical extension 82a of the frustoconical recess 82. Centrally of the recess 104 is a recess extension 107 coaxial with and slightly larger than the extension 82a providing an annular space to receive an O-ring 108 which, in turn, provides a seat for a ball valve 109 normally urged in the direction of the O- ring 108 by a coil spring 110.

The passage 106 has a restricted discharge end 111 and a plurality of radial vanes 112 which centrally position the spring 110. The vanes have offset notches 113 at the upper ends thereof for substantially eliminating transverse move ment while permitting limited vertical movement of the ball valve 109, and it will be noted that the upper ends 114 of the vanes protrude over the recess 107 to thereby prevent displacement of the O-ring 108.

It will be apparent from the foregoing description that the vanes 112 effectively control moving parts of the discharge valve mechanism and, at the same time, provide ample space for pastes or viscous liquids being discharged to move'around the ball valve 109 and flow freely to the discharge 111.

The diametrically opposed recesses 115 in the end of the tip extension 105 permit an appropriate tool to be inserted for tightening and loosening the tip extension 105; and since it would be extremely difficult to move the tip 105 without a special tool, the assemblage is relatively tamperproof, while at the same time accessible for servicing by authorized personnel.

With reference to the tamperproof nature of the device, it is apparent that the cover 78, seating as it does within the recess 79, would be extremely difficult to remove except by inserting an appropriate implement in the notch 116 formed at the rear of the upper edge of the sidewall 78, as shown in FIGS. 1 and II.

The rear portion of the sidewall 76 is provided with vertically disposed divergent fins 117 adapted to engage channel members 118 of a wall bracket 119. Upper ends of the fins 117 are provided with lateral extensions 120 which bear against upper ends of the channel members 118, as clearly shown in FIG. 11, to limit downward movement of the container with respect to the wall bracket 119.

Intermediate the fins 117, the container wall 76 is provided with an upwardly tapered extension 121 which cooperates with a spring finger 122 on the wall bracket 119 to lock the container to the wall bracket. As shown in FIG. 12, downward movement of the container wall 76 with respect to the spring finger 122 flexes the spring finger until it has cleared the tapered protrusion and snapped into the locking position. If it is desired to remove the container from the wall bracket, an appropriate implement can be upwardly inserted between the container and wall bracket to enter the space between spring finger 122 and tapered surface 121 to disengage the parts; but it will be apparent that this would not be readily accomplished, except by one thoroughly familiar with the structure and equipped with the proper tool.

In adapting the device as shown in FIGS. 7 to 12 to dispensing of different materials or different quantities of materials, it will be apparent that this can readily be accomplished by merely providing for the member 92, components having cam portions 93 of varying eccentricity, and/or providing different positioning of the cam follower 94 with respect to the plunger 84. As initially installed, the dispensing device will have the particular cam and follower configuration considered preferable for dispensing a particular material; but it is to be understood that changes in these components can easily be made in the field while a dispensing device is in service. One would merely remove the major portion of residual paste or viscous liquid from the dispenser, remove the C clip from the groove 100, permitting the drive shaft to be axially withdrawn and disengaged from the part 92 carrying the cam 93 and bevel gear 95. The component 92 and the plunger 84 can then be vertically raised until the plunger disengages the guides and a replacement component 92 and associated plunger 85 can be inserted by following these steps in the reverse order.

With the type of discharge shown in FIGS. 7 and 10 having the frustoconical extension 82 in alignment with the recess 81, it is considered that the need for a check valve of the type shown at 72 in FIG. 5 should be minimized. It is to be understood, however, that in some instances, particularly when dispensing heavy pastes, it could be desirable to employ in the structure shown in FIGS. 7 to 12 a plunger equipped with a check valve of the type shown in FIG. 5.

In use of the device as shown in FIG. 7, pastes or viscous liquid can merely be poured into the casing 75. It is sometimes desirable, however, to charge the material to be dispensed in separate containers telescopically disposed within the casing 75. To support such a telescopically disposed container, the sidewall 76 is provided with a plurality of circumferentially spaced and inwardly extending fins 123 providing aligned bearing surfaces 124 which will support such insert container substantially above the moving part of the discharge mechanism.

Various changes and modifications in the dispenser as herein described may occur to those versed in the art, and to the extent that such changes and modifications are embraced by the appended claims it is to be understood that they constitute a part of the present invention.

I claim:

1. A dispensing device for viscous material comprising a vertically disposed generally cylindrical container having a sidewall and bottom wall and a removable top closure, a recess in the bottom wall in close proximity to the sidewall communicating with a discharge opening, a plunger in alignment with said recess and supported on vertically oriented slide means for reciprocating movement into and out of said recess, axial bearing means on the bottom wall rotatably supporting a wiper blade in close proximity to the bottom wall, a drive shaft radially traversing said axial bearing and protruding through said sidewall with actuating means for said drive shaft disposed externally of the device, interfitting means converting rotary movement of said drive shaft to rotary movement of said wiper blade, a cam keyed to said drive shaft, follower means cooperating with said cam and in engagement with said plunger to impart reciprocating motion to said plunger in the rotation of said drive shaft, and the orientation of said cam on said drive shaft being such as to support said plunger in a fully raised position and above said wiper blade as the wiper blade is passing over said recess.

2. A dispensing device as defined in claim 1, wherein said container has a downwardly extending discharge spout in alignment with said recess, and a discharge extension detachably secured to said spout, said extension having a radially finned passage providing movable support for a valve member and a coil spring movably urging said valve member in an upward direction, and an annular recess in said spout cooperating with the upper ends of fins of said extension for supporting a resilient valve seat for sealing engagement by said valve member.

3. A dispensing device as defined in claim 1, wherein said top closure interfits with an annular recess on the inner top edge of said sidewall and is removable by insertion of a small implement in a notch formed at the rear upper edge of said sidewall, the rear of said sidewall having spaced, vertically disposed divergent fins with protruding bearing means at the upper ends thereof providing stops limiting downward movement of said container with respect to a vertically channelled wall bracket, and an upwardly beveled protrusion on said container wall between said fins positioned for locking engagement with a spring finger on said wall bracket at a point inaccessible except with an appropriately elongated implement, whereby said dispensing device is essentially tamperproof.

4. A dispensing device as defined in claim 1, wherein said drive shaft is oriented radially of said container at an angle of 90 to a radius passing over said recess, and said follower means is a link pivoted to an idler shaft paralleling said drive shaft, and having one end in engagement with said cam and the other end in engagement with said plunger.

5. A dispensing device as defined in claim I, wherein said drive shaft is oriented radially of said container in vertical alignment with said recess, and said follower means is an extension of said plunger operatively engaging said cam.

6. A dispensing device as defined in claim 5, wherein said interfitting means for imparting rotary motion to said wiper blade comprises bevel gears on said wiper blade and drive shaft, and the bevel gear on said drive shaft being part ofa unitary component which is integral with said cam, said unitary component being keyed to said drive shaft in a manner to permit sliding movement but prevent rotary movement with respect to said drive shaft.

7. A dispensing device as defined in claim 5, wherein the inner end of said drive shaft engages notch means at the upper portion of said axial bearing means, and a stop member interfitting with the upper end of said bearing means limiting the movement of said drive shaft to rotary and axial movement in said bearing means.

8. A dispensing device as defined in claim 1, wherein means is provided internally of said sidewall for supporting an inverted container of viscous material within said device and above the movable components thereof.

9. A dispensing device as defined in claim 8, wherein said last named means comprises a plurality of circumferentially spaced and inwardly extending fins integral with said sidewall.

10. A dispenser for viscous materials comprising a casing having integral side and bottom walls with discharge means projecting from the bottom wall adjacent the sidewall, a recess on the inner surface of said bottom wall in alignment with said discharge means, an annular mechanism support member detachably mounted within said casing at the juncture of the bottom and sidewalls thereof, said support member having guide means for a vertically reciprocating plunger registering with said recess to force measured amounts of viscous material through said discharge means, drive means movably mounted in said support member and operatively engaging said plunger for controlling the vertical reciprocating movement thereof, said drive means being detachably coupled with actuating means externally of the casing, said drive means, plunger and annular support member being collectively removable from the casing upon detachment of said actuating means.

11. A dispenser as defined in claim 10, wherein said drive means include a drive shaft disposed diametrically of said support member in bearing portions equally spaced from the plunger guide means, an idler shaft mounted in said support means parallel to said drive shaft and intermediate said drive shaft and plunger guide means, a rocker member pivotally mounted on said idler shaft, one end of said rocker member pivotally engaging said plunger, the other end of said rocker member including a cam follower cooperating with a cam element keyed to said drive shaft, said cam element imparting swinging movement to said rocker member which imparts one cycle of reciprocation of said plunger for each cycle of rotation ofsaid drive shaft.

12, A dispenser as defined in claim 11, wherein said rocker member and cam element comprise readily interchangeable parts whereby the extent of reciprocating movement of the plunger, and hence the quantity feed of viscous material, can be varied by appropriate variation in the size and configuration of the cam element and cam follower.

13. A dispenser as defined in claim ll, wherein the cam element on said drive shaft is mounted in a position offset from the center of said shaft, and a bevel gear is mounted centrally of said shaft cooperating with a horizontally disposed bevel gear pivotally mounted on said bottom wall, said horizontal bevel gear carrying a blade for feeding viscous material to said recess, said blade making one complete revolution in each revolution of said drive shaft and being oriented to pass said recess when said plunger is in its uppermost position.

14. A dispenser as defined in claim 10, wherein said dispenser means comprises a spout having a bore registering with said recess through a restricted passage, and resilient valve means within said bore normally closing said restricted passage but yielding to the pressure exerted by said plunger on viscous material within said recess.

15. A dispenser as defined in claim 10, wherein said plunger has a restricted passage therethrough, said passage being closed by a movable valve element in the downward movement of said plunger, and said valve element being yieldably supported to pennit opening of said passage in the upward movement of said plunger.

16. A dispenser as defined in claim 10, wherein the lower portion of said support member and inner surface of said bottom wall include interfitting means controlling the rotational orientation of said support member.

17. A dispenser as defined in claim 10, wherein a supplemental support member is disposed within said casing having bearing engagement with said annular mechanism support member, and having a peripheral flange in bearing engagement with said sidewall, said supplemental support member providing means for positioning an inverted container of viscous material within said casing.

18. A dispenser as defined in claim 10, wherein said drive means includes a drive shaft of square cross-sectional contour, one end of said drive shaft interfitting with a square recess in a hub portion of said actuating means which extends within said casing and is rotatably mounted in a bearing at one end of said drive shaft engaging a square recess in an adapter pivotally mounted in a diametrically opposed bearing in said support member.

19. A dispenser as defined in claim 18, wherein said drive shaft supports a central bevel gear and a cam element spaced from said bevel gear, said bevel gear cooperating with a horizontal bevel gear pivotally mounted on said bottom wall and having a radial blade adapted to pass over said recess in each revolution of said drive shaft, means operatively connecting said cam with said plunger to impart one cycle of reciprocation to said plunger in each rotation of said drive shaft, and same cam element and bevel gears being so oriented thatthe blade on said horizontal bevel gear passes said recess when the plunger is in its upper most position.

I i t UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3.622.048 Dated November 21 1971 Inve t0 Georqe X Batlas It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

On the cover sheet insert [73] Assignee West Chemical Products, Inc.

Signed and sealed this 24th day of October 1972.

(SEAL) Attest:

EDWARD M.FLETCHER,JR. ROBERT GOTTSCHALK Attesting Officer Commissioner of Patents JRM PO-IOSO (10-69) USCOMM-DC 60376-F'69 U 5 GOVERNMENT PRINYIHG OFFICE IBIS D3B6-3Jl

Claims

4. A dispensing device as defined in claim 1, wherein said drive shaft is oriented radially of said container at an angle of 90* to a radius passing over said recess, and said follower means is a link pivoted to an idler shaft paralleling said drive shaft, and having one end in engagement with said cam and the other end in engagement with said plunger.

5. A dispensing device as defined in claim 1, wherein said drive shaft is oriented radially of said container in vertical alignment with said recess, and said follower means is an extension of said plunger operatively engaging said cam.

6. A dispensing device as defined in claim 5, wherein said interfitting means for imparting rotary motion to said wiper blade comprises bevel gears on said wiper blade and drive shaft, and the bevel gear on said drive shaft being part of a unitary component which is integral with said cam, said unitary component being keyed to said drive shaft in a manner to permit sliding movement but prevent rotary movement with respect to said drive shaft.

11. A dispenser as defined in claim 10, wherein said drive means include a drive shaft Disposed diametrically of said support member in bearing portions equally spaced from the plunger guide means, an idler shaft mounted in said support means parallel to said drive shaft and intermediate said drive shaft and plunger guide means, a rocker member pivotally mounted on said idler shaft, one end of said rocker member pivotally engaging said plunger, the other end of said rocker member including a cam follower cooperating with a cam element keyed to said drive shaft, said cam element imparting swinging movement to said rocker member which imparts one cycle of reciprocation of said plunger for each cycle of rotation of said drive shaft.

12. A dispenser as defined in claim 11, wherein said rocker member and cam element comprise readily interchangeable parts whereby the extent of reciprocating movement of the plunger, and hence the quantity feed of viscous material, can be varied by appropriate variation in the size and configuration of the cam element and cam follower.

13. A dispenser as defined in claim 11, wherein the cam element on said drive shaft is mounted in a position offset from the center of said shaft, and a bevel gear is mounted centrally of said shaft cooperating with a horizontally disposed bevel gear pivotally mounted on said bottom wall, said horizontal bevel gear carrying a blade for feeding viscous material to said recess, said blade making one complete revolution in each revolution of said drive shaft and being oriented to pass said recess when said plunger is in its uppermost position.

15. A dispenser as defined in claim 10, wherein said plunger has a restricted passage therethrough, said passage being closed by a movable valve element in the downward movement of said plunger, and said valve element being yieldably supported to permit opening of said passage in the upward movement of said plunger.

19. A dispenser as defined in claim 18, wherein said drive shaft supports a central bevel gear and a cam element spaced from said bevel gear, said bevel gear cooperating with a horizontal bevel gear pivotally mounted on said bottom wall and having a radial blade adapted to pass over said recess in each revolution of said drive shaft, means operatively connecting said cam with said plunger to impart one cycle of reciprocation to said plunger in each rotation of said drive shaft, and same cam element and bevel gears being so oriented that the blade on said horizontal bevel gear passes said recess when the plunger is in its upper most position.