US3808453A - Compactor interlock control - Google Patents
Compactor interlock control Download PDFInfo
- Publication number
- US3808453A US3808453A US00279985A US27998572A US3808453A US 3808453 A US3808453 A US 3808453A US 00279985 A US00279985 A US 00279985A US 27998572 A US27998572 A US 27998572A US 3808453 A US3808453 A US 3808453A
- Authority
- US
- United States
- Prior art keywords
- ram
- switch
- compacting
- receptacle
- starting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
- B30B9/3003—Details
- B30B9/3007—Control arrangements
Definitions
- a compacting machine has a reversible motor drive 7 fora ram movable in a compacting stroke and a retracting stroke.
- Directional controls prepare the drive for a compacting stroke when the ram is at its fully retracted starting position and prepare the drive for a retracting stroke as soon as the ram leaves the starting j. position.
- a safety switch prevents operation of the ram unless the door is closed and the receptacle in compacting position. This switch is by-passed once the ram enters the receptacle to avoid unnecessary stopping of the compacting cycle. When the ram encounters a predetermined resistance it automatically reverses.
- This invention relates to trash compacting machines and the like, and particularly to the controls for a reversible electric motor driving a compactingram in such a machine.
- the trash receiving receptacle is connected to the access door such that the door is closed whenever the receptacle is in compacting position.
- Such machines have safety interlock controls which prevent movement of the ram from its retracted position unless the receptacle is properly located under the ram with the door closed.
- relatively slight movement of the receptacleand/or door has caused the interlock to stop the motor. This may be caused, for example, by force components due to the compacting of trash items at one side of the receptacle. Due to ordinary manufacturing tolerances and/or wear, only a slight such movement may open the interlock and stop the machine. However, if the operator cannot then push the door in sufficiently to close the interlock, he must call for service to free the machine.
- a control for a reversible electric motor driving the ram of a compactor includes a starting circuit with a manually operable starting switch which is closed only long enough to energize a holding circuit which continues power supply to the motor.
- a directional switch is responsive to ram location at its retracted limit, also the cycle starting position, and is moved to cause forward (compacting) motor operation only when the ram is at this position. When the ram leaves its starting position the directional switch transfers to reverse or retracting connections preparatory to any slowing of the motor to a speed where its centrifugal starting switch will again close.
- a cycle ending switch is arranged to respond to ram movement only in the retracting direction and as the ram approaches its starting position, at which time this switch is actuated momentarily.
- the cycle ending switch is wired to open the holding circuit when it is momentarily actuated, hence power to the motor is terminated as the ram approaches the starting position at the end of the.retracting stroke.
- the ram and motor coast to a stop, by which time the startingposition is reached and the directional switch is moved to the forward starting position, and the cycle ending switch is again closed.
- a safety door interlock switch and a key switch are provided to assure the machine can be operated only 7 receptacle and until the'ram has partially entered the receptacle, for example to a depth of about 1 inch. Since the ram exterior is generally configured to the interior of the receptacle, once the ram has entered the receptacle it prevents the door from being opened. Any slight movement of the receptacle and door, even enough to open the door interlock switch, will not affect completion of the compacting cycle.
- the principal object of the invention is thus to provide such a compacting machine with a control of the above described type, in which a compacting cycle can be initiated only when the. safety interlock is closed, but can proceed through a cycle once the ram has entered the receptacle and the door cannot be opened, even though the receptacle and door may move slightly and possibly open the interlock; and in which, following stopping of the ram in its compacting stroke for any reason, subsequent ram movement will automatically be in the reverse direction to thestarting position.
- FIG. 1 is a side elevational view of the compactor showing the receptacle thereof in both its compacting and non compacting positions;
- FIG. 2 is an enlarged view of a portion of the rear of the compactor with some parts broken away to shorten the view;
- FIG. 3 is a representation of a wiring diagram of the present invention.
- FIG. 4 illustrates the manner in which the direction switch and cycle ending switch are operated in relation to ram movement.
- a ram 16 is also positioned in the housing and carries a motor 18 which, through a suitable drive chain, drives sprockets 20 to cause the entire ram mounted assembly to move upwardly and downwardly along the stationary jack screws-22.
- a motor 18 which, through a suitable drive chain, drives sprockets 20 to cause the entire ram mounted assembly to move upwardly and downwardly along the stationary jack screws-22.
- three such jack screws will be utilized, arranged in triangular relationship with two jack screws positioned adjacent the front of the housing and one jack screw positioned centrally adjacent a rear wall of the housing.
- an angle shaped strike member 28 mounted on a rear surface of the drawer 14, as seen in FIG. 2, is an angle shaped strike member 28 having a slot 30 formed through its rearwardly projecting bottom leg 34.
- An inverted U-shaped bracket 36 is attached to the housing adjacent the rear thereof and carries a substantially T-shaped latch member 40 rotatably mounted on a bolt 42 extending through the bracket.
- the latch member has a downwardly projecting stem 44 receivable in the slot 30.
- a spring 45 acts between bracket 36'and latch member 40.
- a portion of the base 15 is also provided with a slot 48 which aligns with the slot 30 when the receptacle 14 is in the compacting position.
- the ram 16 is provided with an L- shaped bracket 50 projecting to one side thereof and connecting rod 52 has its lower, forwardly bent end 53 rotatably received in an opening formed in latch 40.
- the connecting rod is loosely received in an opening formed through the bracket 50 and has its upper end bent at an angle to form a stop member 54.
- Waste material particularly small items such as milk cartons, bottles, cans, etc.
- Waste material can be deposited in the compactor, where they will rest in a small compartment-formed by the inclined shelf 57 and the protective wall 58, until such time as the receptacle l4 is moved outwardly of the housing. This will allow articles lying on shelf 57 to fall into the receptacle 14. The user, therefore, need not wait until the receptacle is unlocked to deposit material in the compactor, but he is of course protected against injury, etc., during operation of the ram by the wall 58.
- a safety interlock switch-60 the'housing for which is shown at 61, is mounted inside the front of the housing, as seen in FIG. 1, and is engaged by a pin 62 when the receptacle 14 is in its compacting position.
- a further interlock is provided by the normally closed switch 65 which is wired in parallel with switch 60.
- Switch 65 is operated by a bracket 66 (FIG. 4) carried by ram 16, and arranged such that the switch is opened when the ram lower surface 24 is just below or within the upper edge 26 of the receptacle, for example within about one'inch of the edge 26.
- bracket 66 FIG. 4
- switch 65- is closed only when the ram has entered the receptacle and thus acts to prevent the drawer unit from being opened, intentionally or accidentally.
- Interlock switch 60 is closed when drawer .14 is closed, and it controls all power to the unit together with key switch 70. Contacts are shown in the position with the drawer open, the ram up, motor stopped, and the key safety switch open. With the key switch 70 operated to close, and the drawer closed, pushing the start button on starting relay 76 will close'its contact 77 and energize its coil 78 to seal'in the relay. This also applies power to the starting winding 80 of ram motor 18,
- the holding circuit for relay 76 includes its coil 78, manual stop switch 88 which is normally closed, a normally closed ram operatedswitch 90, and the overload protector 86.
- Switch 90 is arranged to be opened momentarily by the ram only when it is nearing'the top of its return stroke.
- Its operating lever 92 has an outwardly extending arm 93 pivoted thereon, normally held by a spring 94 in the extended position as shown.
- a roller 95 on the arm is in position to engage an arm 97 extending from the ram 16.
- switch 90 On the downward stroke switch 90 is unaffected and remains closed, but on the upwardly retracting stroke the switch is momentarily opened just as the ram approaches its fully retracted position.
- Directional switch 84 is carried by the ram and is held in the position shown only when the ram is fully up. When the ram'is in any other position, the blades of switch 84 transfer to the contacts shown open. 1 Y I i Thus, as power is first applied the motor 18 starts in a direction to lower the ram in a compactingstroke.
- switch 81 opens and transferring of thecontacts of switch 84 has no effect on motor motor coasts to a stop past the actuation positon of switch 90, so that it again closes.
- Switch 84 is moved to the positon shown, such that the circuit is ready for I the next compacting stroke, just before switch 90 is actuated.
- switch 65 closes, bypassing interlock'switch 60 since the ram is now inside the receptacle and latch 40 is engaged. Thereafter,
- stop switch 90 or key switch 70
- the motor overload protector 86 opens, the circuit energizing relay 76 will be broken, and the motor will stop. Subsequent operation of the start button 75 will energize the motor to drive the ram upward, provided the appropriate switch contacts are then closed.
- a control for a compacting machine having'a receptacle for trash material and a door connected to said receptacle such that said door is closed when said receptacle is in a compacting position, a ram mounted for compacting movement in a compacting stroke entering said receptacle and an opposite retracting stroke to a retracted starting position, a power supply, a reversible motor connected to drive said ram, a directional switch connected to control the forward and reverse operation of said motor corresponding to the compacting and retracting strokes of said ram, means normally holding said directional switch in its reverse position, a starting switch connected betweenvsaid directional switch and said power supply, and an interlock operable in response to opening of said door to disconnect said motor from said power supply;
- the improvement comprising means for bypassing said interlock once said ram has entered said receptacle in a compacting stroke until said ram is almost withdrawn from said receptacle in a retracting stroke.
- a control for a trash compacting machine having a receptacle, a door, a drawer unit incorporating said door and said receptacle for joint movement between a closed compacting position and an open position, a ram mounted for movement with said drawer unit in the closed position in a compacting stroke to compact material and an opposite retracting stroke to a retracted starting position, a power supply, a reversible electric motor connected to drive said ram, and including a motor speed responsive switch and a starting winding, a directional switch connected to switch the power supply to said starting winding for forward and reverse operation corresponding to the compacting and retracting strokes of said ram, a starting circuit connecting said directional switch to said power supply and including a starting switch,
- an interlock switch connected between said motor and said power supply and operative to supply power to said motor only with said drawer unit in said closed position; the improvement comprising a switch connected to bypass said interlock switch and operated by said ram during compacting and retracting strokes to close only when at least a portion of said ram is within said receptacle.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
Description
Claims (3)
Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00279985A US3808453A (en) | 1972-08-11 | 1972-08-11 | Compactor interlock control |
DE2264782A DE2264782B2 (en) | 1971-09-27 | 1972-09-26 | Trash compactor with garbage bags |
DE2264783A DE2264783C3 (en) | 1971-09-27 | 1972-09-26 | Odor removal device on a compacting device |
DE2264777A DE2264777C3 (en) | 1971-09-27 | 1972-09-26 | Household garbage press with swing-out loading flap |
GB4447272A GB1411289A (en) | 1971-09-27 | 1972-09-26 | Compactors |
DE2264785A DE2264785C3 (en) | 1971-09-27 | 1972-09-26 | Household waste press |
IT52981/72A IT966054B (en) | 1971-09-27 | 1972-09-26 | AGGLOMERATOR DEVICE FOR WASTE MATERIAL AND SIMILAR |
DE2264784A DE2264784C3 (en) | 1971-09-27 | 1972-09-26 | Receiving container for a garbage compactor |
NLAANVRAGE7213068,A NL173251C (en) | 1971-09-27 | 1972-09-27 | WASTE PRESS. |
JP9630572A JPS545230B2 (en) | 1971-11-02 | 1972-09-27 | |
CH1413872A CH561599A5 (en) | 1971-09-27 | 1972-09-27 | |
CA176,672A CA992796A (en) | 1972-08-11 | 1973-07-17 | Compactor interlock control |
JP4108774A JPS5069667A (en) | 1972-08-11 | 1974-04-15 | |
JP12030978A JPS5493862A (en) | 1971-09-27 | 1978-09-29 | Compactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00279985A US3808453A (en) | 1972-08-11 | 1972-08-11 | Compactor interlock control |
Publications (1)
Publication Number | Publication Date |
---|---|
US3808453A true US3808453A (en) | 1974-04-30 |
Family
ID=23071164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00279985A Expired - Lifetime US3808453A (en) | 1971-09-27 | 1972-08-11 | Compactor interlock control |
Country Status (2)
Country | Link |
---|---|
US (1) | US3808453A (en) |
CA (1) | CA992796A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868903A (en) * | 1973-03-02 | 1975-03-04 | Environmental Pollution Res Co | Portable compacting apparatus |
US3994216A (en) * | 1975-07-21 | 1976-11-30 | Whirlpool Corporation | Refuse compactor control |
US4062282A (en) * | 1976-08-24 | 1977-12-13 | Whirlpool Corporation | Refuse compactor |
CN102079144A (en) * | 2009-11-30 | 2011-06-01 | 天津市安维康家科技发展有限公司 | Contactless garbage compression robot |
CN102079087A (en) * | 2009-11-30 | 2011-06-01 | 天津市安维康家科技发展有限公司 | Visible garbage compression robot |
CN108438587A (en) * | 2018-03-29 | 2018-08-24 | 施强 | A kind of easy to use and energy-saving and environment-friendly dustbin for building |
US20200047441A1 (en) * | 2015-01-20 | 2020-02-13 | Compaction Technologies, Inc. | Compaction receptacle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3613560A (en) * | 1969-11-05 | 1971-10-19 | Whirlpool Co | Refuse compactor |
-
1972
- 1972-08-11 US US00279985A patent/US3808453A/en not_active Expired - Lifetime
-
1973
- 1973-07-17 CA CA176,672A patent/CA992796A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3613560A (en) * | 1969-11-05 | 1971-10-19 | Whirlpool Co | Refuse compactor |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868903A (en) * | 1973-03-02 | 1975-03-04 | Environmental Pollution Res Co | Portable compacting apparatus |
US3994216A (en) * | 1975-07-21 | 1976-11-30 | Whirlpool Corporation | Refuse compactor control |
US4062282A (en) * | 1976-08-24 | 1977-12-13 | Whirlpool Corporation | Refuse compactor |
CN102079144A (en) * | 2009-11-30 | 2011-06-01 | 天津市安维康家科技发展有限公司 | Contactless garbage compression robot |
CN102079087A (en) * | 2009-11-30 | 2011-06-01 | 天津市安维康家科技发展有限公司 | Visible garbage compression robot |
US20200047441A1 (en) * | 2015-01-20 | 2020-02-13 | Compaction Technologies, Inc. | Compaction receptacle |
CN108438587A (en) * | 2018-03-29 | 2018-08-24 | 施强 | A kind of easy to use and energy-saving and environment-friendly dustbin for building |
Also Published As
Publication number | Publication date |
---|---|
CA992796A (en) | 1976-07-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HOBART CORPORATION, WORLD HEADQUARTERS BUILDING, T Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HOBART INTERNATIONAL INC., A CORP. OF OHIO;REEL/FRAME:004080/0758 Effective date: 19820528 |
|
AS | Assignment |
Owner name: KITCHENAID, INC., Free format text: CHANGE OF NAME;ASSIGNOR:HOBART CORPORATION;REEL/FRAME:004412/0911 Effective date: 19850513 |
|
AS | Assignment |
Owner name: TRABOH CORPORATION Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KITCHENAID, INC.;REEL/FRAME:004683/0001 Effective date: 19850621 |
|
AS | Assignment |
Owner name: EMERSON CONTRACT DIVISION, INC. Free format text: CHANGE OF NAME;ASSIGNOR:TRABOH CORPORATION;REEL/FRAME:004951/0280 Effective date: 19860228 Owner name: WHIRLPOOL CORPORATION Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE SEPT 12, 1988;ASSIGNOR:EMERSON CONTRACT DIVISION, INC.;REEL/FRAME:004951/0285 Effective date: 19880912 Owner name: EMERSON CONTRACT DIVISION, INC.,KENTUCKY Free format text: CHANGE OF NAME;ASSIGNOR:TRABOH CORPORATION;REEL/FRAME:004951/0280 Effective date: 19860228 Owner name: WHIRLPOOL CORPORATION,STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EMERSON CONTRACT DIVISION, INC.;REEL/FRAME:004951/0285 Effective date: 19880912 |