US3648302A

US3648302A - Portable waterless water closet

Info

Publication number: US3648302A
Application number: US83068A
Authority: US
Inventors: Paul T Winters
Original assignee: DEV IND Inc
Current assignee: DEV IND Inc; DEVELOPMENT INDUSTRIES Inc
Priority date: 1970-10-22
Filing date: 1970-10-22
Publication date: 1972-03-14
Anticipated expiration: 1989-03-14

Abstract

This invention relates to a portable waterless water closet wherein the waste materials are sealed off and stored for subsequent removal in a disposable bag stored in a magazine beneath the seat. More specifically, the invention is directed to the manually operated mechanism that includes a pair of counterrotating shoe-carrying elements that grasp and pull successive lengths of the bag from the magazine while, at the same time, cooperating with a pair of opposed spring-loaded jaw members to provide a double seal isolating the waste materials in a storage compartment during the interval between successive uses. Each of the counterrotating elements carry both primary and secondary shoes adapted to alternately and successively grip and pull the bag while camming the spring-loaded jams apart during the bag-pulling operation. These shoe-carrying elements are operatively interconnected such that rotation of one through a complete revolution brings about a corresponding rotation of the other and also completes the waste disposal cycle.

Description

iliiiieel Mates atet Winters lPilllil'llABlLlE WATIERLESS WATER CLUSET [72] Inventor: Paul '11. Winters, Arvada, C010.

[73] Assignee: Development industries, iilflC-, Denver,

[22] Filed: Oct. 22, 1970 [21] Appl. No: 83,060

[52] U.S.Cl ..4/l42 [51] ..A47lt 111/02 [58] llieldolSearch ..4/142,l1l,1l5,1l6,1l9, 4/121,128,131,l38,141;251/7,9

[56] References Cited UNITED STATES PATENTS 2,671,906 3/1954 Potts..... ..4/111 3,401,409 9/1968 Ekrut.... ..4/142 3,416,164 12/1968 Ekrut 4/142 3,452,368 7/1969 Couper ..4/142 3,473,779 10/1969 Gustafson et a1 4/142 X Primary Examiner-l-lenry l(. Artis Attorney-Anderson, Spangler & Wymore [5 7] ABSTRACT This invention relates to a portable waterless water closet wherein the waste materials are sealed] off and stored for subsequent removal in a disposable bag; stored in a magazine beneath the seat. More specifically, the invention is directed to the manually operated mechanism that includes a pair of counterrotating shoe-carrying elements that grasp and pull successive lengths of the bag from the magazine while, at the same time, cooperating with a pair of opposed spring-loaded jaw members to provide a double seal isolating the waste materials in a storage compartment during the interval between successive uses. Each of the counterrotating elements carry both primary and secondary shoes adapted to alternately and successively grip and pull the bag while camming the spring-loaded jams apart during the bag-pulling operation. These shoe-carrying elements are operatively interconnected such that rotation of one through a complete revolution brings about a corresponding rotation of the other and also completes the waste disposal cycle.

10 Claims, 9 Drawing Figures PATENTEDMAR M I972 CLMELBOZ SHEET 2 [IF 2 INVENTOR PAUL WINTERS PORTABLE WATEWLIESS WATER CLOSET Restrooms for use in locations where no plumbing is available are, of course, quite common. One of the best known units has a septic tank filled with a chemical waste-treatment solution that is periodically pumped out and replaced. This requirement of periodic servicing renders the unit undesirable for use in remote areas and it is, therefore, generally found on golf courses, construction sites and recreation areas close to urban centers. About all that is left in the way of a restroom for the remote area is the conventional Chic Sale" outhouse which, as everyone knows, leaves much to be desired.

As a result, there have been several attempts in recent years to develop some kind of self-contained portable water closet that needed no water and could be taken along to remote campsites for use in a trailer, tent or camper where no conventional waste-disposal hookup was available. One such unit used an incineration technique for disposal of the waste materials but it proved to be expensive to manufacture as well as operate and it had several mechanical shortcomings. On the positive side, however, was the fact that the waste was almost completely consumed except for a small amount of residual ash and the unit was left completely sanitary and odor-free after use.

By far the most successful approach to date has been to package the waste materials in some sort of disposable container which can be sealed and stored until facilities for its permanent disposal became available. The problems have been those of finding a suitable disposable container that is strong yet inexpensive, a way of sealing the container and keeping it sealed until it can be properly disposed of, and, most important, an automatic or semiautomatic mechanism for carrying out the waste-disposal cycle. The several sanitary and aesthetic considerations are so obviously a part of any acceptable unit as to require no specific mention.

So far the most acceptable of the prior art waterless water closets designed around the disposable container principal is one in which a length of plastic tubing is stored in a suitable magazine and tied at one end to define a bag which is then drawn out incrementally following each use by a flipflop type system of four rollers that function as both the bag-pulling mechanism and the seals therefor. Several shortcomings are, however, inherent in such a design that seriously detract from its feasability and commercial acceptability. Of primary significance is the fact that each complete waste-disposal cycle resulted in only 3 or 4 inches of tubing being pulled from the magazine which is insufficient to insure the complete removal of the waste into the storage area. Part of the problem is traceable to the fact that the rollers are allowed to rotate freely as they move down along the bag in their attempt to draw a fresh supply from the magazine. In so doing, however, the rollers have a tendency to turn backwards thus withdrawing less than is needed to carry the previously used portion thereof on down into the storage area. On the other hand, mounting these rollers so that they cannot turn can prove to be even less desirable because when they flip over and snap shut with a jawlike action against the bag, the chances of rupturing the latter are vastly increased.

Actuation of the above-described prior art unit requires substantial power to tension the springs and rotate the rollers through their flip-flop waste removal sequence. As a result a major manual maneuver requiring both hands and considerable force was necessary to carry out the waste removal sequence.

lt has now been found in accordance with the teaching of the instant invention that these and other shortcomings of the prior art waterless water closet designs can be completely eliminated by the simple, but unobvious expedient of substituting a pair of counterrotating powered shoe-carrying elements for the four flip-flop action rollers and using these elements to open a snap action gate that spring-closed against the bag only upon completion of the bag-pulling sequence. These shoe-carrying elements turn slowly and uniformly about fixed axes of rotation so as to steadily draw the bag from its magazine without subjecting it to undue strain. The bagengaging surfaces of both the rotating element shoes and the jaws of the snap action gate are all cushioned to further protect the bag from rupture, abrasion or other damage.

The radial displacement of the shoes carried by each rotating element from its axis of rotation and the fact that these elements are driven in a direction to withdraw the bag from the magazine insure that an adequate length thereof is withdrawn to carry the waste well on down into the waste storage area, Furthermore, by drawing an excess length of fresh bag from the magazine, both seals made by the secondary shoes and the jaws of the snap action gate are made against a fresh empty section thereof well above the soiled portion.

The waste disposal sequence is carried out by merely turning one of the counterrotating elements through a single complete revolution and this requires so little power as to be readily accomplished by pulling on a lanyard attached to a spring-wound reel of the type incorporating a single revolution clutch.

It is, therefore, the principal object of the present invention to provide a novel and improved portable waterless water closet.

A second objective is to provide a water closet of the type aforementioned that is completely self-contained.

Another object is to provide a waste disposal unit that is odorless and sanitary.

Still another objective is the provision of a device such as that disclosed and claimed herein in which each actuation of the waste disposal mechanism is operative to remove the waste products from the mechanical action thereof and into a storage area.

An additional object is to provide a reusable receptacle for waste products that is double sealed at all times between uses.

Further objects of the above-described invention are to provide a water closet for use in remote areas that is compact, lightweight, relatively inexpensive, simple to operate, rugged, easily services, safe for even small children to use and decorative in appearance.

Other objects will be in part apparent and in part pointed out specifically hereinafter in connection with the description of the drawings that follows and in which:

FIG. l is a fragmentary side elevation with portions of the case and actuating mechanism broken away to better reveal the interior construction;

HO. 2 is a fragmentary bottom plan view of the unit with the base removed and certain portions of the operating mechanism broken away to more clearly expose the mechanical features; and,

FIGS. 3-9, inclusive, are a series of simplified side elevational diagrams to a reduced scale showing successive steps in the waste disposal cycle.

Referring next to the drawings for a detailed description of the present invention and, initially, to FIGS. 1 and 2 for this purpose, reference numeral has been selected to broadly designate the portable water closet in its entirety while numeral 112 has been employed to similarly designate the operating mechanism housed therein. The unit is housed in a hollow generally rectangular boxlike case 16 made up of three separable sections stacked one on top of the other. The lowermost section or base 18, only the upper portion of which is shown, comprises nothing more than an open-topped receptacle which functions as a storage compartment for the waste material confined in the bag 20.

Sitting atop the base 18 is the midsection 22 which is open both top and bottom and, in the particular form shown, is rectangular having right and left sidewalls 7.4 interconnected by integrally formed front and rear end walls. in the preferred embodiment shown, the midsection 22 is hingedly connected to the base by means of a hinge 3th on the rear wall while the front wall is provided with some kind of releasable latch 32. This construction enables the midsection 22 and top section 32 to be tilted back to expose the base section so that the waste material can be removed that is temporarily stored therein for permanent disposal.

The top section 32 has the waste-receiving opening 34 therein and thus functions as the seat of the unit. It is shown covered by a lid 36 hingedly connected thereto by a hinge 38 extending along the rear edge. This subassembly that includes lid 36 and seat-forming top section 32 is, likewise, made detachable from the midsection 22. In the particular form illustrated, a simple telescopic connection 40 is provided which permits the seat to be lifted free of the midsection so as to expose the annular trough 42 formed by inwardly extending ledge 44 that is bordered on its inner margin by upstanding flange 46.

Resting atop ledge 44 of trough 42 beneath seat 32 is a magazine 48 that carries a supply of plastic tubing 50 stored therein which, upon being tied with a knot as indicated at 52 in FIGS. 3-9 becomes the waste-receiving bag 20. This magazine 48 is defined by a bottom wall 54 bordered along both its inner and outer circumferential margins by radially spaced inner and outer walls 56 and 58. The top wall 60 is formed integral with outer wall 58 but is disconnected from the inner wall 56 to leave continuous annular gap 61 therebetween through which the tubing 50 passes into the compartment within the midsection housing the bag-pulling and sealing mechanism 12. As shown, the tubing is stored within the magazine 42 in accordion-pleated folds. Since the portion of the seat bordering the waste-receiving opening 34 completely covers the magazine and projects well in beyond the gap 61 in the latter, all of the tubing left stored in said magazine is fully protected against contamination.

Next, the mechanism 12 by which the bag-forming tubing is pulled from the magazine and sealed will be described in detail in connection with the same two figures, namely, FIGS. 1 and 2. Extending from front to rear of the midsection 22 are a pair of transversely spaced mounting brackets 62 that are also spaced inwardly of their adjacent sidewalls. Journaled for rotation between these brackets are a pair of identical shoecarrying elements 64 that cooperate with one another upon counterrotational movement to (I) pull the bag from the magazine, (2) actuate a pair of spring-loaded gate-forming jaws 66, and (3) cooperate with the latter elements to form a double seal on the neck 68 of the bag passing therebetween. Both of these shoe-carrying elements have integrally formed

coaxial stub shafts

70 and 72 projecting from opposite ends thereof that terminate in sections of reduced diameter 74 that are joumaled within appropriately sized openings (not shown) in the brackets.

Intermediate the ends of these shoe-carrying members are transversely extending primary and

secondary shoes

76 and 78, respectively, spaced apart angularly from one another so as to leave substantial gaps or voids 80 and 82 therebetween. As shown, both of these gaps are obtuse in angular extent, gap 82 being approximately 120 while gap 80 approaches I80".

The primary shoes 76 are shaped such that their outermost extremities define cylindrical surfaces reaved about the axis of rotation of their respective shoe-carrying elements as a radius. The spacing between the parallel axes of rotation of these shoe-carrying elements is approximately double the radius of curvature of the primary shoe or equal to the diameter of the cylindrical surface defined thereby so that these shoes move into tangent rolling engagement against one another upon counterrotational movement of the shoe-carrying elements as shown diagrammatically in FIGS. 6 and 7. Each shoe 76 is overlaid by a compressible pad or cushion 84 which will cooperate with the mating pad on the other shoe and squeeze the bag tightly enough therebetween and with enough frictional resistance to pull the bag from the magazine.

The secondary shoes 78 are, as previously mentioned, located on the opposite side of the axis of rotation from the primary shoes although they project radially the same distance as the latter shoes, are covered by cushioned pads 86, and cooperate with one another to squeeze the bag therebetween as clearly shown in FIGS. 1, 3, 8 and 9. While the padded ends of these secondary shoes are curved as most clearly shown in FIG. 1, they need not be cylindrically curved about the axis of rotation of the shoe-carrying elements because they are a good deal thinner than the primary shoes and, therefore, do not stay in contact with the bag as long.

counterrotational movement of the shoe-carrying elements 64 is accomplished by means of a pair of

meshed gears

88 and 90 mounted, respectively, on

shafts

70 and 72. One of the gears (88) is the drive gear of the pair while the other (90) is the driven one. As will be explained in detail presently in connection with the diagrams of FIGS. 3-9, one complete waste disposal cycle involves a single 360 revolution of both shoecarrying elements so that the secondary shoes 78 move from the starting positions they occupy in FIG. 1 all the way around in the direction of the arrows and back to their original positions. There are, of course, any number of well-known mechanisms that can be used to turn shaft 70 through a single revolution such as a simple dog-leg crank; however, in the particular form shown, a conventional lanyard-operated springreturn reel 92 of the type used as starters on small two and four-cycle intemal-combustion engines is shown operatively connected to the shaft 70 carrying the drive gear 88. As illustrated, the lanyard 94 passes around a pulley 96 and its handle 98 is housed within a recess 100 formed in the sidewall 24 of the case after it emerges from the reel housing 102. The reel is equipped with a single-revolution stop (not shown) of conventional design so that each pull of the lanyard will bring about 360 counterrotational movement of both shoecarrying elements. The reel also includes the usual spring and one way clutch, neither of which have been shown, which cooperate to rewind the lanyard without actuating either of the shoe-carrying elements.

Each of the shoe-carrying elements 64 carries on one end thereof a cylindrical cam track 104 having a notch 106 therein. These cam tracks are so positioned that the one carried by the front shoe-carrying element 64F is on the right end thereof while the one carried by the rear shoe-carrying element 64R is on the left end. The cylindrical surface of these cams is a little over 270 in angular extent while the notch is slightly less than 90 as is revealed quite clearly in FIGS. 6 and The gate-forming jaws 66 comprise elongate parallel members, the leading edges of which are cushioned as indicated at 108 and which mate to provide a seal along the neck 68 of the bag when the latter is passed therebetween as shown in FIG. I. The length of these mating jaws is greater than that of the shoe-carrying elements and parallel arms 1 10 and 112 are provided at opposite extremities thereof which are mounted on the

stub shafts

70 and 72 for free relative rotational movement. Arm 110 differs from its companion arm 112 in that the latter one carries the cam follower 114 projecting therefrom into position to engage and ride the cam surface 104. Thus, arm 1l2F is located on the left end of front shoe-carrying element 64F where it can ride the cam on the corresponding end of the rear element 64R is shown. Conversely, arm 112R is located at the right rear of element 64R in position to engage the cam on the front element 64F.

Adjacent pairs of

arms

110F, 112R or 110R, 112F on the same side of the unit are operatively interconnected by tension springs 116 that normally bias and hold the gate closed by keeping the jaws 66 in sealed engagement with one another. As will be explained in detail presently, counterrotational movement of the shoe-carrying elements causes the cam followers 114 to leave the notches 106 and ride up onto cylindrical cam surfaces 104 thus opening the gate formed by the jaws 66. Later, as the cam followers reach the end of the cylindrical cam surfaces and are allowed to return to their respective notches under the influence of the bias exerted thereon by springs 116, the jaws snap closed into sealed engagement around the neck of the bag.

Directing the attention next to FIGS. 3-9, inclusive, the operating cycle will be set forth in detail. To prepare the unit for use, it is first necessary to lift the top section and withdraw by hand a length of tube from the magazine. A knot 52 is tied in the end and it is passed down between the secondary shoes Tilt and gate-forming jaws as into the initial position shown in FIG. 3. These elements can be opened far enough to pass the knotted bag by pulling on the lanyard so as to actuate the bagpulling mechanism into the position shown in FIGS. 4 or 5 before returning it to its starting position. Note at the beginning that the neck till of the bag formed by the knotted tube is sealed at two points one above the other by both the springloaded jaws M and the secondary shoes 7%. The unit is now ready for use.

The waste products are trapped in that portion of bag lying above the seal formed by the secondary shoes and, of course, beneath the magazine. When the time comes to temporarily dispose of the waste products, the handle of the lanyard is pulled and counterrotation of the shoe-carrying elements 64 in the direction of the arrows commences. Looking at FIG. l, it can be seen that two operations occur immediately, namely, the secondary shoes 78 begin to move apart releasing the seal formed therebetween and, secondly, the cam followers begin their emergence from the notches 11041 as they ride up on the trailing edges thereof thus opening the jaws 6b in opposition to the bias exerted thereon by the tension springs llllti. The latter action also opens the second seal and releases the neck fill: of the bag all the way down to the knot so that the waste products can begin dropping down therein.

Progressing onto FIG. 5, the secondary shoes and springloaded jaws have both opened even wider, the latter elements having reached their maximum spread as the cam followers have just left the notches we and are now riding on the cylindrical cam surfaces 14M. While the secondary shoes will continue to move farther apart, the primary shoes 76 have already rotated into a position where they have begun to engage the bag, therefore, the neck of the bag is opened as far as it is permitted to open in FIG. h. As this occurs, all of the waste products have dropped down well beneath the point at which the primary shoes engage the neck of the bag.

Moving next to FIG. 6, the secondary shoes have moved into inoperative positions on the remote sides of the shoe-car rying elements while the jaws as remain fully open as the cam followers continue to ride out on the cylindrical cam surfaces. Meanwhile, however, the leading edges of the primary shoes have moved together squeezing the bag therebetween and with the waste products trapped therebeneath. As these primary shoes come together, they not only squeeze the bag but they commence pulling a fresh supply thereof from the magazine. While the cylindrical surfaces of these primary shoes subtend arcs of only between 3 and 4 inches, they actually engage the surface of the bag 2h long before they come together (FlG. 5) and in moving from the position shown in FIG. 5 to that of FIG. 16, they have already cooperated to pull several inches of tubing from the magazine. Then, in moving from the position of FIG. 6 to that of FIG. 7, 3 or 4 more inches of bag are pulled making a total of at least six by the time the assembly reaches the position of FIG. 7.

In FIG. ll, the primary shoes have released their grip on the bag and moved out into their remote inoperative positions on the outside of the shoe-carrying elements. The jaws as are still being held open by the cam followers riding out on the cylindrical surfaces of the cam track; however, they are approaching the leading edges of the notches lilo into which they will soon drop, thus releasing the jaws into their closed positions. In the meantime, the secondary shoes have, once again, engaged the bag and pulled a little bit more of it from the magazine as they move together into sealed contact with the neck thereof. ldy this time, the waste products have dropped down well beneath the entire bag pulling mechanism and are resting on the bottom of the base in the storage compartment formed by the latter.

Finally, as the secondary shoes return to their original positions shown in FIG. 9 from the FIG. d position to thus complete the bagpulling and waste disposal cycle, they will have pulled another inch or two of bag from the magazine making a total of an average of approximately 8 inches more or less. Just before the shoe-carrying elements complete their single revolution, cam followers 11M drop off the cylindrical cam surfaces lltl i into the bottom of the notches res past the leading edges of the latter thus releasing the jaws as to snap into sealed engagement with the neck of the bag therebetween under the influence of the bias exerted thereon by springs llllti. At this point the operating cycle is complete and the recoiltype actuating mechanism operated by lanyard 9d can be released to return to its starting position.

The waste products remain stored temporarily in the compartment provided for this purpose in the bottom of the housing with a double seal around the neck of the bag thereabove that remains in tact between uses. The mechanism as shown in FIG. 9 is ready for reuse at any time. The number of uses that can take place before the waste temporarily stored in the storage compartment must be removed and permanently disposed of is, of course, a function of the length of tubing that can be accommodated in the magazine. Once the tubing in the magazine is exhausted a second knot is tied in the end thereof and the entire bag with the waste sealed therein is placed in another bag for removal from the storage compartment. These other bags have not been shown but several can be stored in the bottom of the cabinet or housing for use when needed.

What is claimed is:

ll. In a waterless water closet of the type having a cabinet topped by a seat with a waste-receiving opening therein, a magazine located underneath the seat containing an annular compartment encircling the opening is the latter communicating the interior of the cabinet, and a length of foldable thinwalled tubing stored in the annular compartment, the im' proved bag-pulling mechanism which comprises: a pair of shoe-carrying elements journalled for rotation inside the cabinet beneath the waste-receiving opening in side-by-side parallel relation about horizontal axes, each of said shoe-carrying elements having a primary shoe and a secondary shoe projecting radially in opposite directions from the axes thereof while cooperating to define gaps of substantial angular extent therebetween, the primary shoes having cylindrically curved outer surfaces extending substantially the full length of the shoe-carrying elements adapted upon counterrotational movement of the latter to close against opposed faces of the tubing when passed therebetween and pull an unused section thereof from the magazine with a wringerlike roller action, the secondary shoes being located and adapted to cooperate with one another to engage and form a seal around the tubing upon further counterrotational movement of the shoe-carrying elements into a second position, and said pairs of primary and secondary shoes cooperating with one another and with one of the pairs of gaps located therebetween upon counterrotational movement of the shoe-carrying elements into a third position so as to open the tubing and permit waste products to gravitate therethrough; a pair of gate-forming jaws located beneath the shoe-carrying elements in parallel relation on opposite sides of the tubing for movement between an open inoperative position and a closed operative position gripping opposed faces of the tubing therebetween to define a seal; spring means con nected between the gate-forming jaws operative to normally bias same into closed position; cam means connected to at least one of the shoe-carrying elements for rotational movement therewith; cam follower means connected between at least one of the gate-forming jaws and the cam means operative to cooperate with the latter to move said jaws into open position and maintain such position throughout the counterrotational movement of the shoe-carrying elements until the second position thereof is reached, and said elements cooperating in said second position to release said jaws into closed position along with the secondary shoes; power transfer means operatively interconnecting the shoe-carrying elements for synchronous counterrotational movement; and, drive means connected to one of the shoe-carrying elements operative upon actuation to cooperate with the power transfer means and counterrotate said shoe-carrying elements through one complete revolution in a direction to pull tubing from the magazine.

2. The improvement as set forth in claim 1 in which: the drive means is operative to counterrotate the shoe-carrying elements through one complete revolution beginning and ending in the second position thereof when both the secondary shoes and gate-forming jaws engage the tubing thus forming a double seal therearound.

3. The improvement as set forth in claim 1 in which: compressible elastic cushions are provided on the faces of the primary and secondary shoes that contact the tubing.

4. The improvement as set forth in claim 1 in which: cam means are located in one end of each roller; a cam follower means operatively connects one of said cam means to each of the gate-forming jaws, and said cam means and cam follower means cooperate to open and close both of said jaws simultaneously.

5. The improvement as set forth in claim 1 in which: the gate-forming jaws comprise mating parallel crosspieces mounted at one extremity of a pair of dog-leg cranks pivotally mounted at opposite ends of each shoe-carrying element for rotational movement relative thereto; the cam means comprise circular disks with a cylindrical cam surface interrupted by a single notch; and, in which the cam follower means comprise an arm projecting from the other extremity of one of the pair of dog-leg cranks onto the cam surface of a cam means located on the same end of the other shoe-carrying means.

6. The improvement as set forth in claim 1 in which: compressible elastic cushions are provided on the mating edges of the secondary shoes that cooperate therewith to permit said shoes to engage and grip the tubing therebetween in advance of the arrival thereof at said second position so as to pull a further section of tubing from the magazine.

7. The improvement as set forth in claim 1 in which: the drive means comprises a manually operated single revolution cranking means.

8. The improvement as set forth in claim 1 in which: the power transfer means comprises a pair of meshed spur gears connected to turn the shoe-carrying elements.

9. The improvement as set forth in claim 3 in which: compressible elastic cushion-forming means are provided on the mating edges of the gate-forming jaws.

10. The improvement as set forth in claim 5 in which: the dog-leg cranks are pivotally mounted for independent relative rotational movement about the same axis of rotation as their respective shoe-carrying elements.

Claims

1. In a waterless water closet of the type having a cabinet topped by a seat with a waste-receiving opening therein, a magazine located underneath the seat containing an annular compartment encircling the opening is the latter communicating the interior of the cabinet, and a length of foldable thin-walled tubing stored in the annular compartment, the improved bagpulling mechanism which comprises: a pair of shoe-carrying elements journalled for rotation inside the cabinet beneath the waste-receiving opening in side-by-side parallel relation about horizontal axes, each of said shoe-carrying elements having a primary shoe and a secondary shoe projecting radially in opposite directions from the axes thereof while cooperating to define gaps of substantial angular extent therebetween, the primary shoes having cylindrically curved outer surfaces extending substantially the full length of the shoe-carrying elements adapted upon counterrotational movement of the latter to close against opposed faces of the tubing when passed therebetween and pull an unused section thereof from the magazine with a wringerlike roller action, the secondary shoes being located and adapted to cooperate with one another to engage and form a seal around the tubing upon further counterrotational movement of the shoe-carrying elements into a second position, and said pairs of primary and secondary shoes cooperating with one another and with one of the pairs of gaps located therebetween upon counterrotational movement of the shoe-carrying elements into a third position so as to open the tubing and permit waste products to gravitate therethrough; a pair of gate-forming jaws located beneath the shoe-carrying elements in parallel relation on opposite sides of the tubing for movement between an open inoperative position and a closed operative position gripping opposed faces of the tubing therebetween to define a seal; spring means connected between the gate-forming jaws operative to normally bias same into closed position; cam means connected to at least one of the shoe-carrying elements for rotational movement therewith; cam follower means connected between at least one of the gate-forming jaws and the cam means operative to cooperate with the latter to move said jaws into open position and maintain such position throughout the counterrotational movement of the shoe-carrying elements until the second position thereof is reached, and said elements cooperating in said second position to release said jaws into closed position along with the secondary shoes; power transfer means operatively interconnecting the shoe-carrying elements for synchronous counterrotational movement; and, drive means connected to one of the shoe-carrying elements operative upon actuation to cooperate with the power transfer means and counterrotate said shoe-carrying elements through one complete revolution in a direction to pull tubing from the magazine.