US2505731A - Refuse collecting vehicle - Google Patents
Refuse collecting vehicle Download PDFInfo
- Publication number
- US2505731A US2505731A US9775A US977548A US2505731A US 2505731 A US2505731 A US 2505731A US 9775 A US9775 A US 9775A US 977548 A US977548 A US 977548A US 2505731 A US2505731 A US 2505731A
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- US
- United States
- Prior art keywords
- refuse
- container
- vehicle
- impeller
- opening
- Prior art date
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- Expired - Lifetime
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- 239000000543 intermediate Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
- B65F3/14—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle
- B65F3/22—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle with screw conveyors, rotary tanks
Definitions
- This invention relates to refuse collecting veother punsdses'jwhe required such as, for' in hicles-a-nd is concerned with such vehicles of the stance, the distribution of sand or gr it on the kind comprising arerus' container having a roads"; H I k charging opening through Whichthe refuse is Still a further objcti'o" of't his k'novli'ri arrange tipped or otherwise delivered into the interior ineiit islthatjth'eniountthe'iinp or at the or the container, and a rotatable im ieller having reafiend of the container which'is itself rotatable; blades for; feeding the delivered reiuse into the calls fohthe provision'of an'fiinpller driving interior of thecontainer so as to pack it therein shaft torotate thesaineextnding frontthe front and thus utilise economically the storage capacend oithef
- the iriviition is to proride aconlongitudinally of the vehicle and provided with a struction of refuse collector of the alcove kind Spiral or helical blade so that on rotating the cohwhich is cheaper than the above known arrangetainer in-the proper direction having regardtd which the disadvantages of the the hand of the spiral, the refuse is ejected above known arrangementIare'avoided.
- the loading opening I3 is disposed near the front end of the refuse container, through which the refuse is loaded into the container so that it passes to the impeller in the manner described, by which it is packed into the refuse compartment 3! from which it is dis charged through the discharge opening 34 pro vided at the rear end of the vehicle and provided with the closing door 35 operable by means of the mechanism 36.
- is effected by operation of the discharge conveyor 33 which is capable of being operated independently of the impeller in the manner described in my aforesaid specification, which conveyor may further be operated during the charging of the compartment as described in my speciiication aforesaid.
- the loading opening I3 is disposed immediately to the rear of the front end of the refuse container l2. If desired it may be disposed a short dis tance to the rear of said front end. Alternatively the position of the container on the vehicle chassis may be reversed so that the loading opening 13 is disposed at the rear end of the vehicle and the discharge opening at the front end of the container and to facilitate discharge such opening is disposed at one side of this front end with the drivers compartment at the opposite side thereof, although the arrangement illustrated is preferred.
- a refuse collecting vehicle in accordance with the present invention possesses the advantage that its construction is cheaper than the arrangement of collector already enumerated while possessing all the advantages of that kind of refuse collector in which an impeller having blades is employed for delivering the charged refuse into the interior of the container and for packing it tightly therein.
- a refuse container extending for substantially the full width of the vehicle, said refuse container having a refuse loading opening at one end thereof and a refuse discharge opening at the other end thereof, said refuse loading opening extending substantially vertically in one of the outer side walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle while the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through the loading opening and to pack it into the interior of the container and towards the discharge opening thereof, said impeller being disposed intermediate the lateral sides of the vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, and means for transmitting drive to said im peller.
- a refuse container extending for substantially the full width of the vehicle, said refusecontainer having a refuse loading opening at the front end thereof anda refuse discharge opening at the rear end thereof, said refuse loading opening extending substantially vertically in one of the outer side walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle while the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through the loading opening and to pack it into the interior of the container and towards the discharge opening thereof, said impeller being disposed intermediate the lateral sides of the vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, and means for transmitting drive to said impeller.
- a refuse container extending for substantially the full width of the vehicle, said refuse container having a refuse loading opening at one end thereof and a refuse discharge opening at the other end thereof, said refuse loading opening extending substantially vertically in one of the outer side walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle while the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through the loading opening and to pack it into the interior of the container and towards the discharge opening thereof, said impeller being disposed inter-mediate the lateral sides of the vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, means for transmitting drive to said impeller, a refuse discharge conveyor extending from said impeller to the discharge opening adjacent
- a refuse container extending for substantially the full width of the vehicle, said refuse container having a refuse loading opening at the front end thereof and. a refuse discharge opening at the rear end thereof, said refuse loading opening extending substantially vertically in one of the outer side walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle While the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through the loading opening and to pack it into the interior of the container, and towards the discharge opening thereof, said impeller being di"posed intermediate the lateral sides of the vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, means for transmitting drive to said impeller, a refuse discharge conveyor extending from said impeller to the discharge opening
- a refuse container extending for substantially the full width of the vehicle, said refuse container having a refuse loading opening at one end thereof and a refuse discharge opening at the other end thereof, said refuse loading opening extending substantially vertically in one of the outer side Walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle while the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through the loading opening and to pack it into the interior of the container and towards the discharge opening thereof, said impeller being disposed intermediate the lateral sides of the Vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, means for transmitting drive to said impeller, a refuse discharge conveyor extending from said impeller to the discharge opening adjacent the bottom
- a refuse cont ainer extending for substantially the full width of the vehicle, said refuse container having a refuse loading opening at the front end thereof and a refuse discharge opening at the rear end thereof, said refuse loading opening extending substantially vertically in one of the outer side walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle while the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through.
- said impeller being disposed intermediate the lateral sides of the vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, means for transmitting drive to said impeller, a refuse discharge conveyor extending from said impeller to the discharge opening adjacent the bottom of said container and along the longitudinal centre line of the said container, means for transmitting drive to said refuse discharge conveyor, and said discharge conveyor having a width less than the maximum width of the refuse container and the lower part of the sides of the latter sloping inwardly and downwardly towards the longitudinal edges of the discharge conveyor.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Refuse-Collection Vehicles (AREA)
Description
Aprifl 25, 1950 A. T. c. DEAR REFUSE COLLECTING VEHICLE 3 Sheets-Sheet 1 Filed Feb. 20, 1948 IQJ.
FIG. 3.
INVENTQR.
AGENTS Aprifl 25, 119% A. T. c. DEAR REFUSE COLLECTING VEHICLE 3 Sheets-Sheet 5 Filed Feb. 20, 1948 INVENTOR ma/ndu M114 154mm LQcM AGENTS Patented Apr. 25, 1950 i 1 UNITED STATES PitT'ENT OF'FIGE 22505,??1'" Ref esh GOIJLECT'ING'VEHIGLE All xander I'Ihoinas =ameron est wich,- England, assignor to Lewiii ltoad swe p,- ers Limited, West Bi'omwich, England, a British company Application Februart 20, 1948; SerialNmQflfS Iii-Great Britain January 8, 1947 eciainis. (c1; 2i4===ii t, no 2 This invention relates to refuse collecting veother punsdses'jwhe required such as, for' in hicles-a-nd is concerned with such vehicles of the stance, the distribution of sand or gr it on the kind comprising arerus' container having a roads"; H I k charging opening through Whichthe refuse is Still a further objcti'o" of't his k'novli'ri arrange tipped or otherwise delivered into the interior ineiit islthatjth'eniountthe'iinp or at the or the container, and a rotatable im ieller having reafiend of the container which'is itself rotatable; blades for; feeding the delivered reiuse into the calls fohthe provision'of an'fiinpller driving interior of thecontainer so as to pack it therein shaft torotate thesaineextnding frontthe front and thus utilise economically the storage capacend oithefvehicl' through the container along ity 91' the container. m the longitudinal centr linethr'le'of The pro- Hithftmin refuse collecting vehicles of the vision ofthis shaft increases the expense of the above kind the charging opening has been disconstruction while it; entails the serious-disad posed at thefrear of the vehicle with the impellervant ge tnat a y remse whic'lris in elongated disposed within {the container ashort distance form, for'exaiiiple, rope, str'ng, Wire and tlie'f-lse inwardly from the opening-and the-same ope'ntends tobecoineifriihovablywound ai'bundthe he h b n. d for d srh h from wan aaisiaciaa sa th t rel iv w the-container; and to enable the i'efuse to be distion which occurs between the shaft and the con:
charged, 1. e. displaced rearwardly relation-to r itera ingtom-ethane and disclnargiii-g oi the containerfthe Iatter'has beeninoiinted foii' the container-5 r bodily rotation about a central aX-is erk-te nding The object o f the iriviition is to proride aconlongitudinally of the vehicle and provided with a struction of refuse collector of the alcove kind Spiral or helical blade so that on rotating the cohwhich is cheaper than the above known arrangetainer in-the proper direction having regardtd which the disadvantages of the the hand of the spiral, the refuse is ejected above known arrangementIare'avoided.
through the charging opening. H u The illustrated in the acco'mgsany:
The above described' knownarrangementis ing drawings wherein:
subject to a number "of disadvantages. In the Figural is a 'side elevation of one form of refirst place the mounting of the container for iuseicollectingyehile constructed inaccordan'ce' bodily rotation is an expensive cdnstrt'ccon'im H with the present invention volving accurate manufacture of the container to ITigur'e Z isa longitudinal sectional View of the and the provision of special supporting bearings. rear part of'the vehicle depicted in Figure -1.
Furthermore; in order to ensure that" the mate- Figures 3 and 4 are sectional views on the lines rial which is tipped into the container through S-fiarid 4-4 respectively {of Figure 2.
the charging opening is delivered to the impeller; Thelrefuse collecting vehicle illustrated in the hlades and thus fed hithe impeller forwar'dlj 33 raw gsis' constructed exactly as described in of the container so as to be packed into the intemy ccificationyNo 9,713 flied February 20, rior thereof, it is necessary for the lowest edge l9 l8' no w Patent Nd. 2,488,966 granted Novemoi the charging opening to be clispo'sedat an ap-- 194 9 withitheexcefition that the loading preciable height-above the lowest part of the inipeller blades so thatwhen the refuse is delivered through-the opening it has a sufficient gravity" fall menace ittdreach theinipeller and thusbe fed by the impeller forwardh of the container'l' This limitatior'ronthe heightofthe lowest'd e of the charging ep'eninin relation to the 'irn; pller' necessitates bractice the provision" ciareatweiy small charging; opening which can 0111?- be usedwith standard domestic refuse bins a 'l; non-standard domestic bi-ri or other container cannot conveniently be employed. 1
Furthermore, the above known arrange A eja'uo'n'ly he used for refuse" collecting purposes; the" proifis'io'n' of the-impeller at 't'herear at or u 'evfemciead eem to the openiii'3th'e'reiiipr eluding" thd'additid'ri'al use "of the vehicle for 55' he said specificatioli ereof'there' isprovided her '43 which extends inalateral ar'dlii; and ownwardly-1 from; the odi'rig oiiiiiii land tier a, mitenr 22 so fuse 'coi-itaihihg' t nenttli I the manner iflcation.
init ates merely to say that the loading opening I3 is disposed near the front end of the refuse container, through which the refuse is loaded into the container so that it passes to the impeller in the manner described, by which it is packed into the refuse compartment 3! from which it is dis charged through the discharge opening 34 pro vided at the rear end of the vehicle and provided with the closing door 35 operable by means of the mechanism 36.
Discharge of the refuse from the compartment 3| is effected by operation of the discharge conveyor 33 which is capable of being operated independently of the impeller in the manner described in my aforesaid specification, which conveyor may further be operated during the charging of the compartment as described in my speciiication aforesaid.
In the particular arrangement illustrated the loading opening I3 is disposed immediately to the rear of the front end of the refuse container l2. If desired it may be disposed a short dis tance to the rear of said front end. Alternatively the position of the container on the vehicle chassis may be reversed so that the loading opening 13 is disposed at the rear end of the vehicle and the discharge opening at the front end of the container and to facilitate discharge such opening is disposed at one side of this front end with the drivers compartment at the opposite side thereof, although the arrangement illustrated is preferred.
A refuse collecting vehicle in accordance with the present invention possesses the advantage that its construction is cheaper than the arrangement of collector already enumerated while possessing all the advantages of that kind of refuse collector in which an impeller having blades is employed for delivering the charged refuse into the interior of the container and for packing it tightly therein.
I claim:
1. In a refuse collecting vehicle a refuse container extending for substantially the full width of the vehicle, said refuse container having a refuse loading opening at one end thereof and a refuse discharge opening at the other end thereof, said refuse loading opening extending substantially vertically in one of the outer side walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle while the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through the loading opening and to pack it into the interior of the container and towards the discharge opening thereof, said impeller being disposed intermediate the lateral sides of the vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, and means for transmitting drive to said im peller.
, 2. In a refuse collecting vehicle a refuse container extending for substantially the full width of the vehicle, said refusecontainer having a refuse loading opening at the front end thereof anda refuse discharge opening at the rear end thereof, said refuse loading opening extending substantially vertically in one of the outer side walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle while the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through the loading opening and to pack it into the interior of the container and towards the discharge opening thereof, said impeller being disposed intermediate the lateral sides of the vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, and means for transmitting drive to said impeller.
3. In a refuse collecting vehicle a refuse container extending for substantially the full width of the vehicle, said refuse container having a refuse loading opening at one end thereof and a refuse discharge opening at the other end thereof, said refuse loading opening extending substantially vertically in one of the outer side walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle while the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through the loading opening and to pack it into the interior of the container and towards the discharge opening thereof, said impeller being disposed inter-mediate the lateral sides of the vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, means for transmitting drive to said impeller, a refuse discharge conveyor extending from said impeller to the discharge opening adjacent the bottom of said container and along the longitudinal centre line of the said container, and means for transmitting drive to said refuse discharge conveyor.
4. In a refuse collecting vehicle a refuse container extending for substantially the full width of the vehicle, said refuse container having a refuse loading opening at the front end thereof and. a refuse discharge opening at the rear end thereof, said refuse loading opening extending substantially vertically in one of the outer side walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle While the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through the loading opening and to pack it into the interior of the container, and towards the discharge opening thereof, said impeller being di"posed intermediate the lateral sides of the vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, means for transmitting drive to said impeller, a refuse discharge conveyor extending from said impeller to the discharge opening adjacent the bottom of said container and along the longitudinal centre line of the said container, and means for transmitting drive to said refuse discharge conveyor.
5. In a refuse collecting vehicle a refuse container extending for substantially the full width of the vehicle, said refuse container having a refuse loading opening at one end thereof and a refuse discharge opening at the other end thereof, said refuse loading opening extending substantially vertically in one of the outer side Walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle while the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through the loading opening and to pack it into the interior of the container and towards the discharge opening thereof, said impeller being disposed intermediate the lateral sides of the Vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, means for transmitting drive to said impeller, a refuse discharge conveyor extending from said impeller to the discharge opening adjacent the bottom of said container and along the longitudinal centre line of the said container, means for transmitting drive to said refuse discharge conveyor, and said discharge conveyor having a width less than the maximum width of the refuse container and the lower part of the sides of the latter sloping inwardly and downwardly towards the longitudinal edges of the discharge conveyor.
6. In a refuse collecting vehicle a refuse cont ainer extending for substantially the full width of the vehicle, said refuse container having a refuse loading opening at the front end thereof and a refuse discharge opening at the rear end thereof, said refuse loading opening extending substantially vertically in one of the outer side walls of the vehicle, a sill defining the lower edge of said refuse loading opening, said sill being adapted to support a refuse bin carried manually by a garbage collecting man standing on the ground at the side of the vehicle while the contents of the bin are discharged through the loading opening, a rotatable bladed impeller adapted to receive the refuse delivered through. the loading opening and to pack it into the interior of the container and towards the discharge opening thereof, said impeller being disposed intermediate the lateral sides of the vehicle adjacent the bottom of the container so as to feed the refuse into the container substantially along the longitudinal centre line of the bottom of the container, means for directing the loaded refuse from the loading opening to the lower part of the impeller, means for transmitting drive to said impeller, a refuse discharge conveyor extending from said impeller to the discharge opening adjacent the bottom of said container and along the longitudinal centre line of the said container, means for transmitting drive to said refuse discharge conveyor, and said discharge conveyor having a width less than the maximum width of the refuse container and the lower part of the sides of the latter sloping inwardly and downwardly towards the longitudinal edges of the discharge conveyor.
ALEXANDER THOMAS CAMERON DEAR.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,307,692 Linde Jan. 5, 1943 2,371,540 Mott Mar. 13, 1945 FOREIGN PATENTS Number Country Date 746,053 France Feb. 27, 1933 813,441 France Feb. 22, 1937 44,307 Holland Oct. 15, 1938
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2505731X | 1947-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2505731A true US2505731A (en) | 1950-04-25 |
Family
ID=10908626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US9775A Expired - Lifetime US2505731A (en) | 1947-01-08 | 1948-02-20 | Refuse collecting vehicle |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2505731A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3189202A (en) * | 1961-08-22 | 1965-06-15 | Elmer K Hansen | Material unloading vehicle |
| US4640659A (en) * | 1984-12-20 | 1987-02-03 | Hal Parks | Impeller and compaction refuse collection system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL44307C (en) * | ||||
| FR746053A (en) * | 1932-02-11 | 1933-05-22 | Improvements to dump trucks, especially those used for household garbage collection | |
| FR813441A (en) * | 1935-11-13 | 1937-06-01 | Improvements to devices for vehicle loading | |
| US2307692A (en) * | 1939-04-01 | 1943-01-05 | Linde Hilding | Refuse collecting container |
| US2371540A (en) * | 1943-11-20 | 1945-03-13 | Leach Corp | Refuse collector |
-
1948
- 1948-02-20 US US9775A patent/US2505731A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL44307C (en) * | ||||
| FR746053A (en) * | 1932-02-11 | 1933-05-22 | Improvements to dump trucks, especially those used for household garbage collection | |
| FR813441A (en) * | 1935-11-13 | 1937-06-01 | Improvements to devices for vehicle loading | |
| US2307692A (en) * | 1939-04-01 | 1943-01-05 | Linde Hilding | Refuse collecting container |
| US2371540A (en) * | 1943-11-20 | 1945-03-13 | Leach Corp | Refuse collector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3189202A (en) * | 1961-08-22 | 1965-06-15 | Elmer K Hansen | Material unloading vehicle |
| US4640659A (en) * | 1984-12-20 | 1987-02-03 | Hal Parks | Impeller and compaction refuse collection system |
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