US3717089A

US3717089A - Household refuse compactor

Info

Publication number: US3717089A
Application number: US00183978A
Authority: US
Inventors: H Oles; J Thiesen
Original assignee: American Precision Industries Inc
Current assignee: American Precision Industries Inc
Priority date: 1971-09-27
Filing date: 1971-09-27
Publication date: 1973-02-20
Anticipated expiration: 1990-02-20

Abstract

A trash compactor comprising a frame, a stationary ram mounted on said frame, a trash receptacle, a hydraulic container for mounting said trash receptacle, linkage means secured relative to said frame and said hydraulic container for moving said hydraulic container and said receptacle carried thereby between a first position wherein said trash may be loaded into said receptacle and a second position wherein said receptacle is in axial alignment with said ram, a reservoir for hydraulic fluid contained within said ram, pump means in communication with said reservoir, said hydraulic container being expandible and in communication with said pump means whereby the pumping of hydraulic fluid from said reservoir into said hydraulic container will move said receptacle toward said ram so as to compact trash therein, and control means for selectively energizing said pump means, said control means including pressure responsive valve means in communication with said pump means for breaking an electric circuit to said pump means and thus deenergizing said pump means in response to the sensing of a predetermined pressure in the hydraulic container.

Description

United States Patent 11 1 Oles et al. Feb. 20, 1973 [54] HOUSEHOLD REFUSE COMPACTOR Primary Examiner-Billy]. Wilhite 75 inventors: Herbert E.0les,Wi11iamsvil1e;John Weber W. Thiesen, Jr., Buffalo, both of 57] ABSTRACT [73] Assignee: American Precision Industries inc.,

Buffalo, N.Y. A trash compactor comprising a frame, a stationary ram mounted on said frame, a trash rece tacle, a [22] Flled' Sept 1971 hydraulic container for mounting said trash reccpta- [21] Appl. No.: 183,978 cle, linkage means secured relative to said frame and said hydraulic container for moving said hydraulic 52 us. 01 ..100/52, 100 53, 100/229 A, wmme' and Said receptade carried thereby between 100/266 100/269 A, 100/295, loo/DIG 15 a first position wherein said trash may be loaded into [51] 1nt.Cl. ..B30b 15/16 Said receptacle and a Second Position wherein Said 53 Field f Search "100/52, 229 R, 229 A 262, receptacle is in axial alignment with said ram, 21 reser- 100 2 9 11 2 9 A, 295 50 52 mg 5 voir for hydraulic fluid contained within said ram, pump means in communication with said reservoir, [56] References it d said hydraulic container being expandible and in com- I munication with said pump means whereby the pump- UNITED STATES PATENTS ing of hydraulic fluid from said reservoir into said 3,654,855 4/1972 Longo ..100/229 hydraulic container will move Said receptacle toward 3,683,795 8/1972 Harris ..100/53 i ram 50 as to compact trash therein, and control 3,478,909 11/1969 Charles ....l00/269A means for selectively energizing said pump means, 3,514,969 6/1970 Harza ..,.100/269 A Said comm] means including pressure responsive valve ggig 3 Howard at loo/266x means in communication with said pump means for 332381403 111951 .1'5531'511/5314? biekiig an e e ciiwii to said P means and 3,133,492 5/1904 Czulak et al ..100/209 R thus energizing P means iesimse the 3,537,390 11/1970 Hinkeletal. ..100/53 x Sensing of a predetermined Pres-Sure iii the hydraulic 3,669,009 6/1972 Pratt ..l00/52 container. 3,685,438 8/1972 Ziegler ..lOO/229 X FOREIGN PATENTS OR APPLICATIONS 8/1939 Great Britain ..100/250 9 Claims, 16 Drawing Figures PAmmimmo SHEET 10F 5 INVENTORS HERBERT E. OLES JOHN W. THIESENJR BY iii 5 PATENTEU Z 01 75 SHEET 30F 5 IN VENTORS HERBERT E. OLES BY JOHN w. THIESEN,JR

AT TOHNF YE;

HOUSEHOLD REFUSE COMPACTOR The present invention relates to an improved trash compactor for home use.

It is one object of the present invention to provide an improved trash compactor for home use which is relatively compact as a result of an unique arrangement of its operating parts.

Another object of the present invention is to provide an improved trash compactor for home use which can be loaded and unloaded in a convenient manner and in which the parts requiring periodic cleaning are readily accessible.

A further object of the present invention is to provide an improved trash compactor for home use having an unique hydraulic circuit which is housed completely within the confines of the trash compactor.

Yet another object of the present invention is to provide an improved trash compactor for home use which possesses an unique mechanical linkage for moving the trash receiving receptacle between loading and compacting positions. Other objects and attendant advantages of the present invention will readily be perceived hereafter.

The improved trash compactor of the present invention comprises a frame, a ram mounted relative to said frame, a trash receptacle, linkage means secured relative to said frame to move said receptacle between a first position wherein trash may be loaded therein and a second position where it is in axial alignment with said ram, a reservoir for hydraulic fluid, pump means in communication with said reservoir, an expandible hydraulic container in communication with said pump means, means for mounting said receptacle on said hydraulic container and moving it toward said ram so as to compact trash in said receptacle, and control means for selectively energizing said pump means. In its more specific aspects, the reservoir is located within said ram to conserve space. Furthermore, the linkage meanS comprise elongated links for moving said hydraulic container between a loading position and a compacting position, the links being so oriented and associated with each other and the remainder of the apparatus so as to stabilize said container during compaction while occupying relatively little space within the housing of the compactor. In addition, the control meanS for energizing the pump means include a pressure responsive valve for terminating compaction when the hydraulic fluid reaches a predetermined value.

The various aspects of the present invention will be more fully understood when the following portions of the specification are read in conjunction with the accompanying drawings wherein:

FIG. 1 is a perspective view of the improved trash compactor;

FIG. 2 is a cross sectional view taken substantially along line 22 of FIG. 1 and showing the orientation of the various components including the structure for supporting the trash receptacle when the compactor door is closed;

FIG. 3 is a view similar to FIG. 2 but showing the trash compactor with its door open and the trash receptacle in position for loading or emptying of trash;

FIG. 4 is an enlarged fragmentary cross sectional view taken substantially along line 4-4 of FIG. 1 and showing the combined ram and reservoir for the selfcontained water supply and also showing the various details of construction of the trash receptacle and its supporting structure prior to compaction;

FIG. 5 is a cross sectional view taken substantial along line 5-5 of FIG. 1 and showing the trash receptacle and its supporting structure in an elevated position wherein the trash therein is compacted by the ram;

FIG. 6 is a cross sectional view taken substantially along line 6-6 of FIG. 2 and showing the details for mounting the upper ends of certain links and also showing details of construction of the upper frame;

FIG. 7 is a cross sectional view taken substantially along line 77 of FIG. 2 and showing the details of construction of the upper portion of the trash receptacle container and its mounting structure;

FIG. 8 is a cross sectional view taken substantially along line 8-8 of FIG. 2 and showing in greater detail the construction for mounting the lower ends of the various links and also showing the construction of the lower portion of the housing frame;

FIGS. 9-14 are fragmentary cross sectional views taken substantially along lines 9-9 to 1414 of FIGS. 2 and 3 for showing in enlarged detail the connections between various links;

FIG. 15 is a schematic electrical wiring diagram for the compactor; and

FIG. 16 is a fragmentary cross sectional view taken substantially along line l616 of FIG. 7 and showing in greater detail the manner in which the return springs are mounted relative to the frame and receptacle container and also showing in dotted lines the manner in which the springs are stretched during the compaction process.

The improved trash compactor 10 of the present invention includes a frame having a pair of front vertical angles 11 and a pair of rear vertical angles 11'. The lower ends of each pair of angles 11-1 1 on the sides of the compactor are joined by angles 12 secured thereto as by welding. Angle 13 joins the bottoms of angles 11 across the front of the compactor (FIG. 8) and angle 13 joins the bottoms of angles 11' across the rear of the compactor. The upper ends of each pair of angles ll1l are joined by angles 14 on the sides of the compactor. The tops of angles 11 are joined by angle 15 and the tops of angles 11 are joined by angle 15'. Enameled metal side wall surfaces 16 are suitably secured to each pair of angles 11-11. Enameled metal plate 17 is suitably secured to the top angles l4, l5 and 15', and an upper panel 18 is suitably secured to front angles 11 at the upper portion of the front of the compactor.

By way of preview, suitably mounted within the above described frame of compactor 10 is a hollow stationary ram 19 which also functions as a reservoir for containing a supply of water or other suitable hydraulic fluid, a motor-pump unit 20, a sealed expansible hydraulic container 21 for receiving water from the reservoir via the pump, and a movable receptacle container 22 which carries a demountable trash receptacle 23 upwardly for compaction of the trash therein by the ram 19.

The combined ram and reservoir 19 is fabricated from rigid metal and is of very slight frustoconical configuration so that it contains a downward draft. Ram 19 also provides a chamber 24 which serves as a reservoir for water or other hydraulic fluid. The upper portion of ram 19 merges into horizontal flange 25 (FIGS. 4 and 6) which is of rectangular configuration and extends substantially from front to rear and from side to side of the compactor. Front triangular support members 26 and rear triangular support members 27 have their lower edges welded to flange 25. The lower portions of the rectangular frame 28 consisting of

panels

28, 29, 30 and 31 are welded to flange 25, with the outer vertical edges of

triangular members

26 and 27 being welded to the junctions between adjacent panels, as shown in FIG. 6. A top plate 32 (FIG. 4) is welded to the upper edges of the panels of frame 28' and has portions which extend outwardly horizontally beyond frame 28 and these portions are secured at select spaced locations to the horizontal legs of upper angles -15 by screws 33.

Secured to

side panels

29 and 31 of the upper frame 28, as by welding, are a plurality of vertically oriented

short channel members

34, 35, 36 and 37 which mount the upper ends of the links which carry receptacle container 22 (FIGS. 2 and 6).

Legs

38 and 39 of channel 34 are welded to panel 29, as are

legs

40 and 41 of channel 36, with

legs

39 and 40 being welded to each other to provide extremely high rigidity at this point.

Legs

42 and 43 of channel 35 are welded to panel 31 as are

legs

44 and 45 of channel 37, with

legs

43 and 44 being welded to each other to provide high rigidity at this point.

Vertical

elongated links

44 and 45 are pivotally secured to the bases of

channels

35 and 37 by

pins

46 and 47, respectively. Pin 46 (FIG. 13) essentially includes a central body portion 48, a head 49 and a reduced portion 50 which receives a spring retainer or snap ring 51. Pin 47 is similar to pin 46 and the specific structure thereof will not be described. Certain other pins which attach other links to the various portions of the unit are of the same type as pin 46, as can be seen from the drawings, but are of different lengths and in the interest of brevity, their construction will not be described. Secured to the bases of

channels

34 and 36 by pins 46' and 47', respectively, are links 44' and 45', respectively, which are the mirror images of

links

44 and 45. While the ensuing description will generally be directed only to the links on the side of the unit shown in FIGS. 2 and 3, it will be appreciated that the links, such as 44' and 45', on the other side of the unit, operate in an identical manner except in mirror image relationship to

links

44 and 45.

' Link 44 includes a central body portion 52 consisting of

sides

53 and 54 connected by a curved portion 55, so as to be U-shaped in cross section throughout most of its length. As can be seen, the curved portion 55 terminates at 56 at the top of the link and at 57 at the bottom. Extending beyond portion 56 are ears 58 and 59 (FIG. 13), which are extensions of

sides

53 and 54, through which pin 46 extends. Link 45 includes a central body portion 60 having

sides

61 and 62 connected by curved portion 63 which terminates at its upper end at 64 and at its lower end at 65, so as to be U-shaped in cross section throughout most of its length.

Sides

61 and 62 continue upwardly to form

ears

66 and 67, respectively, which receive pin 47. The lower ends of

sides

53 and 54 of link 44 are pinned by pin 68 to ears 70 (FIG. 9) which extends upwardly from rectangular plate 72 (FIG. 5) which comprises a base which ex tends across the width of the unit and includes apertures 73 to reduce its weight. The lower ends of

sides

61 and 62 of link 45 are pinned by pin 69 to ear 71 which extends upwardly from plate 72. At this point it is to be noted that the lower portions of links 44 and 45' are secured by pins 68' and 69' to ears and 71 respectively, which are mirror images of

ears

70 and 71, respectively, and extend upwardly from plate-72.

The linkage for supporting hydrauliccontainer 21 is also fastened to pins 68-68 and 69-69. More specifically, link 74 (FIGS. 3 and 9) is essentially of U-shaped cross section throughout most of its length with

sides

75 and 76 which are connected by curved portion 77, the U-shaped portion terminating at point 78 near the top, and the

sides

75 and 76 continuing on as

ears

79 and 80, respectively, (FIG. 11). Pivotally mounted on pin 69 is the right angle corner of triangular link 81 (FIGS. 3 and 8), the right side of which is formed into the shape of a U (FIG. 8) and is mounted in straddling relationship to ear 71 and in nesting relationship to the spaced

legs

61 and 62 of link 45. More specifically, link 81, in addition to including triangular portion 92, includes a flange portion 93 connected to portion 92 by curved portion 94 (FIG. 12), with portion 93 extending parallel to edge 94 throughout the length of the link (FIG. 3). Links 74' and 81' (FIG. 8) are mirror images of

links

74 and 81, respectively, and are secured to their pivot pins in a manner analogous to that described above relative to

links

74 and 81.

The upper ends of

links

74 and 81 are pivotally mounted on bracket 83 having a central portion 84 and bent over side portion 85 and straight side portion 86. The

ears

79 and 80 of link 74 are mounted on pin 87 (FIG. 11) having outer cylindrical reduced end portions 88 and 89 and a central cylindrical portion 90. The upper end of link 81 (FIG. 12) is mounted on pin 91 which may be of the same form as pin-87. A counterpart bracket 83', which is the mirror image of bracket 83, is provided on the opposite side of the compactor and is secured by pins such as 87 and 91 to the upper ends of links 74' and 81' which are the mirror image counterparts of

links

74 and 81, respectively. Furthermore, their mode of connection is a mirror image relationship to the connection described above relative to

links

74 and 81 at their upper ends.

Brackets 83 and 83' include upper

horizontal flanges

95 and 95, respectively, and lower

horizontal flanges

96 and 96', respectively. As can be seen from FIG. 7, flange 96' terminates at a curved edge 97. Flange 95 which lies above flange 96' terminates at curved edge 98' so as to follow the contour of cylindrical hydraulic container 21. Flange 95 terminates at a curved edge 98" which is the mirror image of edge 98, and flange 96 terminates at a curved edge 97" which is the mirror image of edge 97. Brackets 83 and 83' support hydraulic container 21 by having

flanges

96 and 96' secured to circular rim 99 of lower housing portion 100 and to circular rim 101 of upper housing portion 102 by spaced nuts and bolts 103 with the edge of a cylindrical diaphragm 104 being clamped between

rims

99 and 101. The inner portions of flanges 95 and 95' are secured as by welding to circular shoulder 82 (FIG. 5) of hydraulic container 21'. I

The above described linkage between the upper portion of the frame and the hydraulic container 21 functions to securely hold the latter during the actual process of compacting trash and it also functions in moving the hydraulic container 21 and the receptacle container 22 carried thereby between the closed position shown in FIG. 2 wherein trash can be compacted and the open position shown in FIG. 3 wherein trash can be loaded into the removable trash receptacle 23 in the receptacle container 21, or where the trash receptacle 23 can be removed for emptying. The linkage also includes a link 105 and its mirror image counterpart 105. Link 105 has its upper end pivotally mounted on pin 46 (FIG. 13) and its lower end pivotally mounted on portion 92 of link 81 and coupled thereto by pin 106 (FIG. The foregoing linkage causes hydraulic container 21 to move out in an out of housing unit 10 housing in a substantially horizontal rectilinear path notwithstanding that the pivotal movement of

links

44 and 45 from the position shown in FIG. 2 to the position shown in FIG. 3 would tend to cause the container to rise. Because of the existence of link 105 and its counter part 105', the tops of

links

74 and 81 will tend to drop in a controlled fashion substantially simultaneously with the rising of the lower portions of

links

44 and 45 so as to in essence maintain hydraulic container 21 at a substantially uniform elevation as it is moved in and out of the'inside of unit 10.

To facilitate and guide movement of receptacle container 21 between the positions shown in FIGS. 2 and 3, a pair of angles 107 and 107' which bear mirror image counterpart relationship to each other have their horizontal legs 108 and 108', respectively, welded to the bottom of base or plate 72 (FIGS. 5 and 8). Vertical legs 109 and 109' have mounted thereon plastic buttons 110 which slide on the vertical plates 111 and 111', respectively, which are welded between the front and rear columns 11 and 11 of the frame. Plastic buttons 110' are mounted on vertical plates 111 and 111' for slidingly engaging vertical legs 109 and 109'. Angles 107 and 107' in conjunction with buttons 110 and 110' and related structure prevent the hydraulic container 21 from swaying excessively from side to side both during insertion and withdrawal from the housing and they further stabilize hydraulic container 21 when it is located within the housing. Horizontal legs 108 and 108' of

angles

107 and 107, respectively, have

slots

170 and 171, respectively, therein to receive the lower portions of

triangular links

81 and 81 when the latter are in the position of FIG. 3.

Hydraulic container 21 is secured to front panel 112 having handle 113 thereon. The connection is made through bracket 114 (FIGS. 3 and 7), secured to panel brace 114' at a lower portion of panel 112, and through bracket 115 (FIG. 7) and its mirror image counterpart 115' (FIG. 4). Bracket 115 has an end 116 secured as by welding to brace 112 of panel 112 and the other end 117 secured as by welding to the curved portion of bracket 83. Handle 113 is used to lock panel 112 in closed position and to this end it is formed integrally with portion 118 having latch portion 119 on the other end which is biased to the right in FIG. 4 by spring 120 which is interposed between portion 118 and the outer surface of panel 112. A latch retainer 121 in the form of an elongated channel has its opposite ends secured on front angles 11 and it has an aperture 122 therein for receiving latch 119. The aperture is elongated so as to receive latch 119 as a result of pivoting handle 113 in a clockwise direction substantially about point 123. It will be appreciated of course that panel 112 can be pushed shut and latch will automatically slide into opening 122 to effect a latching action.

As noted above, a receptacle container 22 is mounted within hydraulic container 21. Receptacle container 22 is essentially cylindrical throughout its length and includes a closed bottom 125 to which a circular plate 126 is attached by bolt 127 to sandwich portion 128 of diaphragm 104 therebetween. As can be seen from FIG. 5, diaphragm 104 in conjunction with lower section 100 of hydraulic container 21 provides a chamber 129 which receives water or other hydraulic fluid from flexible conduit 130.

In order to initiate a trash compacting operation door panel l12 is moved to the position shown in FIG. 3 to exposed hydraulic container 21 and receptacle container 22 contained therein. Thereafter a trash container 23 is inserted downwardly into receptacle container 22 after being lined with a removable bag liner 132, the upper end of which is rolled around rim 133 of container 23 and caused to lie on the outside thereof so that its edge 134 assumes the position shown in FIG. 4 whereby the upper portion of liner 132 is wedged between upper portion 135 of container 23 and the upper portion 136 of receptacle container 22. Thereafter trash such as bottles, cans, boxes, and other waste are thrown into the lined receptacle 23. The front panel and hydraulic container 21 are thereafter moved from the position shown in FIG. 3 to the position shown in FIG. 2 until latch 119 is in a locked condition. At this time a limit switch 137 which is secured to channel 37 of bracket 138 (FIG. 3) is closed because of its engagement by link 45. If limit switch 137 is not closed, compaction cannot occur.

After panel 112 has been moved to its closed position, trash container 23 is in axial alignment with ram 19. Thereafter, motor pump unit 20, which is mounted by nuts and bolts 117' on panel 118. on the rear of the frame, is actuated by pressing switch 157 to pump water from reservoir 24 into siphon conduit 139, chamber 140, conduit 141, pump 142, conduit 143 and flexible conduit 130 into chamber 129. This will cause receptacle container 22 to move from the position shown in FIG. 4 to the position shown in FIG. 5 wherein ram 19 enters container 23 to compress the trash therein. The receptacle container 22, during upward movement, is guided by reduced cylindrical portion 136' of container 21. A pressure responsive switch 159 is provided in the hydraulic circuit leading to flexible conduit 130 so that if for any reason the pressure reaches a predetermined value signifying the completion of compaction, this switch will open to break the circuit to motor 20' as can be visualized from FIG. 15.

It is to be noted that there is a draft both in ram 19 and in container 23 so as to facilitate their separation at the end of compaction. It will be appreciated that when chamber 129 is filled, diaphragm 104 which provides a seal between container 21 and container 22 will provide rolling engagement with the wall of upper container section 102. At this point it is to be noted that chamber 140 which is connected to siphon conduit 139 is completely enclosed except for the entry of

conduits

139 and 141 thereto. Therefore when the water in chamber 140 is pumped out by pump 142 there will be a siphon action through conduit 139 to refill it which provides a continuous supply of water to chamber 129. The water which fills chamber 129 when the parts are in the position shown in FIG. is returned to reservoir 24 because of the action of springs 145 which have their lower portions connected to brackets 146 (FIG. 16) welded to the bottom of container 21 and their upper portions secured to flange 147 mounted on container 22.

A plastic boot 149 having bayonet slots 150 on diametrically opposite sides thereof for receiving pins 151 extending outwardly frOm ram 19 is adapted to fit in complementary mating relationship with the outside of ram 19. It will be appreciated that when boot 149 becomes too dirty, it can be removed by merely twisting it so as to permit it to drop and it can thereafter be cleaned and replaced.

The simplified electrical circuit for operation of the above described compactor is shown in FIG. 15. More specifically,

lines

152 and 153 are coupled to a suitable source of voltage. Coupled in series in line 152 is a key switch 154 for receiving key 155 (FIG. 1) for providing main current to the circuit. If key switch 154 is not closed, the unit cannot operate. Also in series in line 152 is a normally closed stop switch 156. If for any reason it is desired to stop the compactor during operation, it is merely necessary to press switch 156 to terminate flow of current in the circuit. Also coupled in series in line 152 is a normally open start switch 157 which when closed completes a circuit to relay coil 158 through normally closed pressure switch 159 (FIGS. 7 and when door switch 137 is closed as a result of the trash container 23 being in alignment with the ram 19. Upon energization of relay 158 relay switch .158-1 will close so that when switch 157 is released the circuit will be maintained in operation. Also, upon energization of relay coil 158 relay switch 158-2 will be caused to close to cause motor portion of motor pump unit 20 to operate to drive centrifugal pump 142. However, before start switch 157 is closed, the operator should observe that lamp 161 is ignited, and this occurs when switch 160 is closed by virtue of rim 147 engaging it as shown in FIG. 2 to signify that the trash receptacle is in alignment with ram 19. As noted above, when the contents of the trash receptacle are compressed to a predetermined value, the pressure sensed by pressure switch 159 will reach a value at which it will open to terminate the flow of current to relay coil 158 and thus terminate the compaction cycle, whereupon springs 145 will cause the parts to return to the position shown 7 in FIG. 2.

What is claimed is:

1. A trash compactor comprising a frame, ram means mounted relative to said frame, a trash receptacle, linkage means secured relative to said frame for moving said receptacle between a first position wherein trash may be loaded therein and a second position wherein it is in axial alignment with said ram means, reservoir means for hydraulic fluid, pump means in communication with said reservoir means, an expandible hydraulic container in communication with said pump means, means for removably mounting said receptacle on said hydraulic container and moving it toward said ram means so as to compact trash in said receptacle, and control means for selectively energizing said pump means.

2. A trash compactor as set forth in claim 1 wherein said reservoir means is located within said ram means.

3. A trash compactor as set forth in claim 1 including a movable base, and wherein said linkage means comprises first elongated links having first upper portions pivotally secured relative to said frame and first lower portions pivotally secured relative to said movable base, second elongated links having second upper portions pivotally secured relative to said hydraulic container and second lower portions pivotally secured relative to said movable base, and interconnecting linkage means for coordinating movement of said second elongated links in response to movement of said first elongated links.

4. A trash compactor as set forth in claim 3 wherein said first elongated links comprise a first pair of substantially parallel links on each of two opposite sides of said hydraulic container, and wherein said second elongated links comprise a second pair of substantially parallel links on each of two opposite sides of said hydraulic container and lying in substantially the same planes as said first pairs of elongated links.

5. A trash compactor as set forth in claim 4 wherein certain of said first and second links nest within each other when said receptacle is in alignment with said ram means.

6. A trash compactor as set forth in claim 1 including a boot, and means removably mounting said boot on said ram means.

7. A trash compactor as set forth in claim 6 wherein said ram means possesses a draft in the direction of said receptacle and wherein said boot fits in complementary mating relationship on said ram means.

8. A trash compactor as set forth in claim 1 wherein said pumP means comprises an electric motor and pump combination, and wherein said control means includes an electric circuit for energizing said electric motor, and pressure responsive valve means in communication with said pump means for breaking said electric circuit and thus deenergizing said electric motor when said pump means produces a predetermined pressure in said hydraulic container.

9. A trash compactor as set forth in claim 8 including a base for mounting said movable container, and spring means effectively coupled between said hydraulic container and said base for withdrawing said receptacle from engagement with said ram means upon deenergization of said electric motor and for forcing hydraulic fluid from said hydraulic container into said reservoir means.