US2709859A - Hydraulically operated back-filling apparatus - Google Patents

Hydraulically operated back-filling apparatus Download PDF

Info

Publication number
US2709859A
US2709859A US114779A US11477949A US2709859A US 2709859 A US2709859 A US 2709859A US 114779 A US114779 A US 114779A US 11477949 A US11477949 A US 11477949A US 2709859 A US2709859 A US 2709859A
Authority
US
United States
Prior art keywords
vehicle
pusher
frame
blade
cylinder
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
Application number
US114779A
Inventor
John S Pilch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US114779A priority Critical patent/US2709859A/en
Application granted granted Critical
Publication of US2709859A publication Critical patent/US2709859A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/22—Dredgers or soil-shifting machines for special purposes for making embankments; for back-filling
    • E02F5/223—Dredgers or soil-shifting machines for special purposes for making embankments; for back-filling for back-filling

Definitions

  • An object of the invention is to provide a device of the type set forth which is particularly adapted for the moving of earth or the like in a direction laterally or transverse to the direction of movement of the vehicle or tractor by which it is carried and, therefore, considerably speeds up and facilitates the movement of such material.
  • Another object of the invention is to provide a device of the type set forth which is adapted to be employed for such purposes as back-filling or filling in trenches without the loss of time and wear and tear on the bulldozcr or tractor usually encountered in the use of a bulldozer or tractor for such purposes.
  • Another object of the invention is to provide a stabilizing means for a Sidedozer.
  • Another object of the invention is to provide a Sidedozer with means for easily and quickly varying the angle of the pusher or blade.
  • Another object of the invention is to provide a Sidedozer wherein the tractor and pusher or blade may be conveniently operated by a single operator.
  • Fig. 1 is a side view of the device embodying the invention
  • Fig. 2 is a side view thereof from the opposite side
  • Fig. 3 is a top or plan view thereof
  • Fig. 4 is a perspective view, on an enlarged scale, of the blade carrying mechanism
  • Fig. 5 is a sectional view taken on line 5-5 of Fig. 1, looking in the direction of the arrows;
  • Fig. 6 is a side view of the blade carrying mechanism showing the blade in one adjusted position
  • Fig. 7 is a view similar to Fig. 6 but showing the blade in another adjusted position.
  • the principal object of the present invention to provide a new and improved Sidedozer particularly adapted for moving lengthy piles of material latertted June *5, 1%55 in a sidewise direction, such as for filling a trench, without the necessity of constantly moving the entire vehicle or dozer back and forth and, therefore, speeding up the moving operation while reducing the wear and tear on the entire vehicle or dozer and with which the vehicle or dozer may be driven only in a direction parallel to the axis of the pile of material to be moved and means operated by the operator of the dozer to move such pile sidewise, that is, in a direction transverse to its axis and the axis of the dozer.
  • the device shown embodying the invention comprises a wheel type tractor of usual construction designated generally as 10 and including the frame 11, wheels 12, operators seat 13 and steering wheel 14-.
  • the tractor 10 is provided with a hydraulic operating system comprising an oil pump 15 of usual type adapted to be mechanically connected to and operated by the tractor engine.
  • the pump 15 is connected by pipe line 16 to oil reservoir 1'] whereby oil is supplied to said pump 15 from said reservoir 17.
  • Control valve 18 which is adapted to be operated by actuating levers i9, is connected to pump 15 by pipe line 29.
  • the Sidedozer attachment or carriage is suspended from the frame 11 between the front and rear wheels 12 of the tractor and is carried by the transverse supports 21 and 22 which are secured to the frame 11 and by the upright support 23 which is reinforced by the struts 24.
  • This attachment comprises the frame 25 which is pivotally mounted by the hangers 25 and pins 27 to the ends of the supports 21 and 22.
  • the blade or pusher 23 is carried by the ram 29 which extends into the cylinder 3% which is carried by the frame 25.
  • the cylinders 31 and 32 Within which are slidably mounted the aligning pins or bars 33 and 34 respectively which are secured adjacent their free ends to the blade 28 for retaining it in alignment.
  • the blade or pusher may be secured at any desired angle relative to the axis of the tractor 11 but preferably has its axis normal to the axis of the tractor.
  • the hydraulic lines 35 and 36 are connected to the opposite ends of the cylinder 30 and said lines are connected at their opposite ends to control valve 18 for effecting movement of ram 29 in either direction within cylinder 30 in the usual manner.
  • a stabilizer for preventing lateral movement of the tractor bodily during its operation.
  • This stabilizer comprises a cylinder 37 pivotally connected at 38 to an upright support 39 on frame 11 which support is reinforced by struts 40.
  • the stabilizer member 41 which carries the shoe 41a, extends into cylinder 37 and said cylinder 31 is provided with a plurality of openings 42 any of which may be aligned with an opening in stabilizer 41 and then a pin may be positioned through said aligned openings for adjusting the length of stabilizing member 41.
  • the hydraulic lines 47 and 4 8 are connected to the cylinder 44 adjacent its opposite ends and are connected to the hydraulic control valve 18 whereby the ram 45 may be raised or lowered at will.
  • the supports 21 and 22 may be provided with a plurality of openings 49 to which the hangers 26 are pivotally mounted by pins 27, depending upon the angular position in which the frame 25 and cylinder 30 are to be employed as shown in Figs. 6 and 7. It is not necessary that a plurality of openings 49 be provided, however, as the vertical cylinder can change the angular position of the frame 25 without changing the pivot point of hangers 26 on supports 21 and 22.
  • the support or strut 50 On the frame 11 and extending from the lower side thereof is the support or strut 50 to which is pivotally secured the cylinder 51 which receives the ram 52 which is pivotally connected at 53 to the cylinder 37 of the stabilizing member.
  • the hydraulic lines 54 and 55 are connected adjacent opposite ends of said cylinder 51 and also to the control valve 1.3 for hydraulically controlling said stabilizing member.
  • the vehicle In operation the vehicle is. positioned beside the pile of material to be pushed and the vehicle is headed in a direction substantially parallel to the axis of the pile of earth or other material to be moved and by operation of the control levers 19, the operator of the vehicle can cause the pusher to reciprocate without moving from his seat 13 and the vehicle is driven in a straight line with only intermittent stops to allow the pusher to push the material laterally of the axis of the vehicle and by changing the pivot point about which the support 25 is pivoted by means of the hangers 26 which may be accomplished by merely pivoting said hangers 26 to either of the openings 49 in the supports 21 and 22, the vertical angle at which the pusher 28 operates may be altered at will.
  • the vertical ram can be employed to change the angular position of the frame carrying the Sidedozer blade or pusher and, therefore, the angular position of this pusher may be changed during its operation to vary the angle of the pusher as desired.
  • the stabilizer may be employed to prevent lateral movement of the vehicle during the operation of the pusher on heavy loads and by operation of the hydraulic controls the stabilizer may be lifted or raised from the ground during the moving of the vehicle and quickly replaced for stabilizing the same when the vehicle is in desired position and the pusher is to be operated.
  • a stabilizer on the side of said vehicle opposite said blade and pivotally connected to said vehicle frame for restraining said vehicle against lateral movement during the movement of said blade, and hydraulic means for operating said stabilizer.
  • a vehicle frame a stationary supporting frame carried by and positioned substantially beneath said vehicle frame, an earth pusher blade carried by said supporting frame, and positioned at one side of said vehicle frame and mounted for rewhereby the position of the pusher may be adjusted vertically.
  • a vehicle frame In a back filling machine, a vehicle frame, a laterally extending stationary supporting frame beneath said vehicle frame and carried thereby, an earth moving pusher blade carried by said supporting frame and positioned at one side of said vehicle frame and mounted for reciprocation in a direction lateral to the axis of said vehicle frame, hydraulic means carried by said supporting frame for effecting reciprocation of said pusher blade and including piston and cylinder means connected directly to said pusher blade and positioned beneath said vehicle frame, said piston and cylinder means being pivotally supported relative to said vehicle frame and vertically positioned hydraulic means connected to said piston and cylinder means for changing the angular position of said blade.
  • a back-filling machine comprising a vehicle having a frame, front and rear Wheeled supporting means for said frame, a hydraulic pusher means including a stationary and a movable element mounted transversely of v said frame between said front and rear supporting means.
  • the stationary element of said pusher means supported at one end on a pivot the axis of which is substantially parallel to the normal line of travel of the vehicle and supported at the other end by hydraulic lift means, and an earth pushing blade mounted on the movable portion of said hydraulic pusher means whereby earth may be pushed generally horizontally in a direction transverse to the normal line of travel of said vehicle.
  • a stabilizer including a shoe pivotally connected to the vehicle on the side opposite said pusher blade and a hydraulic means for swinging said stabilizer about its pivotal mounting whereby said shoe may be lowered to resist the lateral thrust of the pusher or raised during movement of said vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Description

June 7, 1955 J. 5. PILCH HYDRAULICALLY OPERATED BACK-FILLING APPARATUS 3 Sheets-Sheet 1 Filed Sept. 9, 1949 INVENTOR. JQHN 5. "PILCH ATTORNEY June 7, 1955 l s, PILCH 2,709,859
HYDRAULICALLY OPERATED BACK-FILLING APPARATUS Filed Sept. 9, 1949 5 Sheets-Sheet 2 JOHNSFPILCH ATTORNEY iNVENTOR.
J. S. PILCH HYDRAULICALLY OPERATED BACK-FILLING APPARATUS June 7, 1955 5 Sheet's-Sheet 3 Filed Sept. 9, 1949 9 m a ma N m m We m m/ g N H a m U/ United States Patent Q amassa HYDRAULICALLY OPERATED BACK-FILLING APPARATUS This invention relates to earth moving apparatus, or the like, and has particular reference to a new and improved form of such apparatus which I have termed a Sidedozer.
An object of the invention is to provide a device of the type set forth which is particularly adapted for the moving of earth or the like in a direction laterally or transverse to the direction of movement of the vehicle or tractor by which it is carried and, therefore, considerably speeds up and facilitates the movement of such material.
Another object of the invention is to provide a device of the type set forth which is adapted to be employed for such purposes as back-filling or filling in trenches without the loss of time and wear and tear on the bulldozcr or tractor usually encountered in the use of a bulldozer or tractor for such purposes.
Another object of the invention is to provide a stabilizing means for a Sidedozer.
Another object of the invention is to provide a Sidedozer with means for easily and quickly varying the angle of the pusher or blade.
Another object of the invention is to provide a Sidedozer wherein the tractor and pusher or blade may be conveniently operated by a single operator.
Other objects and advantages of the invention will be apparent from the following description taken in connection with the accompanying drawings. it will be understood that many changes may be made in the details of construction and arrangement of parts without departing from the scope of the invention as expressed in the accompanying claims, as the preferred form has been given by way of illustration only.
Referring to'the drawings:
Fig. 1 is a side view of the device embodying the invention;
Fig. 2 is a side view thereof from the opposite side,
Fig. 3 is a top or plan view thereof;
Fig. 4 is a perspective view, on an enlarged scale, of the blade carrying mechanism;
Fig. 5 is a sectional view taken on line 5-5 of Fig. 1, looking in the direction of the arrows;
Fig. 6 is a side view of the blade carrying mechanism showing the blade in one adjusted position; and
Fig. 7 is a view similar to Fig. 6 but showing the blade in another adjusted position.
In the past where bulldozers have been employed for moving a lengthy pile of earth or other material in a sidewise direction, such as when filling a trench, it has been necessary to constantly change the angular relation of the tractor or bulldozer as well as move the entire tractor back and forth relative to the pile of material to be moved for each individual push of the blade. It will be apparent that such constant movement of the bulldozer was time consuming and also caused considerable wear and tear on the entire vehicle.
It is, therefore, the principal object of the present invention to provide a new and improved Sidedozer particularly adapted for moving lengthy piles of material latertted June *5, 1%55 in a sidewise direction, such as for filling a trench, without the necessity of constantly moving the entire vehicle or dozer back and forth and, therefore, speeding up the moving operation while reducing the wear and tear on the entire vehicle or dozer and with which the vehicle or dozer may be driven only in a direction parallel to the axis of the pile of material to be moved and means operated by the operator of the dozer to move such pile sidewise, that is, in a direction transverse to its axis and the axis of the dozer.
Referring more particularly to the drawings wherein similar reference characters designate corresponding parts throughout, the device shown embodying the invention comprises a wheel type tractor of usual construction designated generally as 10 and including the frame 11, wheels 12, operators seat 13 and steering wheel 14-.
The tractor 10 is provided with a hydraulic operating system comprising an oil pump 15 of usual type adapted to be mechanically connected to and operated by the tractor engine. The pump 15 is connected by pipe line 16 to oil reservoir 1'] whereby oil is supplied to said pump 15 from said reservoir 17.
Control valve 18, which is adapted to be operated by actuating levers i9, is connected to pump 15 by pipe line 29. The Sidedozer attachment or carriage is suspended from the frame 11 between the front and rear wheels 12 of the tractor and is carried by the transverse supports 21 and 22 which are secured to the frame 11 and by the upright support 23 which is reinforced by the struts 24. This attachment comprises the frame 25 which is pivotally mounted by the hangers 25 and pins 27 to the ends of the supports 21 and 22.
The blade or pusher 23 is carried by the ram 29 which extends into the cylinder 3% which is carried by the frame 25. On the opposite sides of the cylinder 30 are provided the cylinders 31 and 32 Within which are slidably mounted the aligning pins or bars 33 and 34 respectively which are secured adjacent their free ends to the blade 28 for retaining it in alignment. The blade or pusher may be secured at any desired angle relative to the axis of the tractor 11 but preferably has its axis normal to the axis of the tractor.
The hydraulic lines 35 and 36 are connected to the opposite ends of the cylinder 30 and said lines are connected at their opposite ends to control valve 18 for effecting movement of ram 29 in either direction within cylinder 30 in the usual manner.
On the side of the tractor opposite pusher or blade 28 may be provided a stabilizer for preventing lateral movement of the tractor bodily during its operation. This stabilizer comprises a cylinder 37 pivotally connected at 38 to an upright support 39 on frame 11 which support is reinforced by struts 40. The stabilizer member 41, which carries the shoe 41a, extends into cylinder 37 and said cylinder 31 is provided with a plurality of openings 42 any of which may be aligned with an opening in stabilizer 41 and then a pin may be positioned through said aligned openings for adjusting the length of stabilizing member 41.
On the support 23 is pivotally mounted at 43 the cylinder 44 into which extends the ram 45 which is pivotally connected at 46 to the frame 25.
The hydraulic lines 47 and 4 8 are connected to the cylinder 44 adjacent its opposite ends and are connected to the hydraulic control valve 18 whereby the ram 45 may be raised or lowered at will.
The supports 21 and 22 may be provided with a plurality of openings 49 to which the hangers 26 are pivotally mounted by pins 27, depending upon the angular position in which the frame 25 and cylinder 30 are to be employed as shown in Figs. 6 and 7. It is not necessary that a plurality of openings 49 be provided, however, as the vertical cylinder can change the angular position of the frame 25 without changing the pivot point of hangers 26 on supports 21 and 22.
On the frame 11 and extending from the lower side thereof is the support or strut 50 to which is pivotally secured the cylinder 51 which receives the ram 52 which is pivotally connected at 53 to the cylinder 37 of the stabilizing member. The hydraulic lines 54 and 55 are connected adjacent opposite ends of said cylinder 51 and also to the control valve 1.3 for hydraulically controlling said stabilizing member.
In operation the vehicle is. positioned beside the pile of material to be pushed and the vehicle is headed in a direction substantially parallel to the axis of the pile of earth or other material to be moved and by operation of the control levers 19, the operator of the vehicle can cause the pusher to reciprocate without moving from his seat 13 and the vehicle is driven in a straight line with only intermittent stops to allow the pusher to push the material laterally of the axis of the vehicle and by changing the pivot point about which the support 25 is pivoted by means of the hangers 26 which may be accomplished by merely pivoting said hangers 26 to either of the openings 49 in the supports 21 and 22, the vertical angle at which the pusher 28 operates may be altered at will.
While the ram is in operation for pushing the pusher or blade, the vertical ram can be employed to change the angular position of the frame carrying the Sidedozer blade or pusher and, therefore, the angular position of this pusher may be changed during its operation to vary the angle of the pusher as desired.
The stabilizer may be employed to prevent lateral movement of the vehicle during the operation of the pusher on heavy loads and by operation of the hydraulic controls the stabilizer may be lifted or raised from the ground during the moving of the vehicle and quickly replaced for stabilizing the same when the vehicle is in desired position and the pusher is to be operated.
From the foregoing it will be seen that I have provided simple, efficient and economical means for obtaining all of the objects and advantages of the invention.
lateral movement of said blade relative to said frame, and
a stabilizer on the side of said vehicle opposite said blade and pivotally connected to said vehicle frame for restraining said vehicle against lateral movement during the movement of said blade, and hydraulic means for operating said stabilizer.
2. In a back filling machine, a vehicle frame, a stationary supporting frame carried by and positioned substantially beneath said vehicle frame, an earth pusher blade carried by said supporting frame, and positioned at one side of said vehicle frame and mounted for rewhereby the position of the pusher may be adjusted vertically.
4. In a back filling machine, a vehicle frame, a laterally extending stationary supporting frame beneath said vehicle frame and carried thereby, an earth moving pusher blade carried by said supporting frame and positioned at one side of said vehicle frame and mounted for reciprocation in a direction lateral to the axis of said vehicle frame, hydraulic means carried by said supporting frame for effecting reciprocation of said pusher blade and including piston and cylinder means connected directly to said pusher blade and positioned beneath said vehicle frame, said piston and cylinder means being pivotally supported relative to said vehicle frame and vertically positioned hydraulic means connected to said piston and cylinder means for changing the angular position of said blade.
5. A back-filling machine comprising a vehicle having a frame, front and rear Wheeled supporting means for said frame, a hydraulic pusher means including a stationary and a movable element mounted transversely of v said frame between said front and rear supporting means.
Lil
the stationary element of said pusher means supported at one end on a pivot the axis of which is substantially parallel to the normal line of travel of the vehicle and supported at the other end by hydraulic lift means, and an earth pushing blade mounted on the movable portion of said hydraulic pusher means whereby earth may be pushed generally horizontally in a direction transverse to the normal line of travel of said vehicle.
6. In the back-filling machine of claim 5, a stabilizer including a shoe pivotally connected to the vehicle on the side opposite said pusher blade and a hydraulic means for swinging said stabilizer about its pivotal mounting whereby said shoe may be lowered to resist the lateral thrust of the pusher or raised during movement of said vehicle.
References ited in the file of this patent UNITED STATES PATENTS 1,244,290 Cardwell Oct. 23, 1917 2,206,283 Jacobs et al July 2, 1940 2,243,564 Kerber May 27, 1941 2,321,833 Lull June 15, 1943 2,334,323 Gilbert Nov. 16, 1943 2,348,796 Ferwerda et al May 16, 1944 2,365,169 Billings Dec. 19, 1944 2,411,498 Billings Nov. 26, 1946 2,436,799 Frost Mar. 2, 1948 2,443,209 Thornburg June 15, 1948 2,630,746 Thompson Mar. 10, 1953
US114779A 1949-09-09 1949-09-09 Hydraulically operated back-filling apparatus Expired - Lifetime US2709859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US114779A US2709859A (en) 1949-09-09 1949-09-09 Hydraulically operated back-filling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US114779A US2709859A (en) 1949-09-09 1949-09-09 Hydraulically operated back-filling apparatus

Publications (1)

Publication Number Publication Date
US2709859A true US2709859A (en) 1955-06-07

Family

ID=22357376

Family Applications (1)

Application Number Title Priority Date Filing Date
US114779A Expired - Lifetime US2709859A (en) 1949-09-09 1949-09-09 Hydraulically operated back-filling apparatus

Country Status (1)

Country Link
US (1) US2709859A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798315A (en) * 1953-03-27 1957-07-09 Huber Mfg Co Road grader attachment
US2894341A (en) * 1953-10-05 1959-07-14 William M Amthor Digging machine
US3253717A (en) * 1964-04-27 1966-05-31 Sterling Prec Corp Stiff leg outrigger for fire trucks and the like
US3698487A (en) * 1970-11-12 1972-10-17 Ato Inc Road maintainer attachment
US5701693A (en) * 1996-01-22 1997-12-30 Edge Development, Inc. Berm clearing attachment for road clearing vehicles

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1244290A (en) * 1916-10-30 1917-10-23 Harland W Cardwell Ditch-filling machine.
US2206283A (en) * 1940-07-02 Cultivator for vineyards
US2243564A (en) * 1940-12-20 1941-05-27 Hi Way Service Corp Road grader
US2321833A (en) * 1940-07-19 1943-06-15 Le Grand H Lull Motor vehicle underbody truck grader
US2334323A (en) * 1941-12-06 1943-11-16 Gilbert Jaek Leslie Scraping and loading machine
US2348796A (en) * 1940-08-19 1944-05-16 Ferwerda Ray Material moving device
US2365169A (en) * 1943-08-05 1944-12-19 Roy O Billings Vehicle outrigger
US2411498A (en) * 1945-03-14 1946-11-26 Roy O Billings Pull shovel
US2436799A (en) * 1945-07-07 1948-03-02 Lester P Frost Outrigger type support
US2443209A (en) * 1944-09-09 1948-06-15 Bucyrus Erie Co Leveling device for cable-tool drills
US2630746A (en) * 1947-02-04 1953-03-10 Theodore W Thompson Tractor mounted vineyard cultivator

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206283A (en) * 1940-07-02 Cultivator for vineyards
US1244290A (en) * 1916-10-30 1917-10-23 Harland W Cardwell Ditch-filling machine.
US2321833A (en) * 1940-07-19 1943-06-15 Le Grand H Lull Motor vehicle underbody truck grader
US2348796A (en) * 1940-08-19 1944-05-16 Ferwerda Ray Material moving device
US2243564A (en) * 1940-12-20 1941-05-27 Hi Way Service Corp Road grader
US2334323A (en) * 1941-12-06 1943-11-16 Gilbert Jaek Leslie Scraping and loading machine
US2365169A (en) * 1943-08-05 1944-12-19 Roy O Billings Vehicle outrigger
US2443209A (en) * 1944-09-09 1948-06-15 Bucyrus Erie Co Leveling device for cable-tool drills
US2411498A (en) * 1945-03-14 1946-11-26 Roy O Billings Pull shovel
US2436799A (en) * 1945-07-07 1948-03-02 Lester P Frost Outrigger type support
US2630746A (en) * 1947-02-04 1953-03-10 Theodore W Thompson Tractor mounted vineyard cultivator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798315A (en) * 1953-03-27 1957-07-09 Huber Mfg Co Road grader attachment
US2894341A (en) * 1953-10-05 1959-07-14 William M Amthor Digging machine
US3253717A (en) * 1964-04-27 1966-05-31 Sterling Prec Corp Stiff leg outrigger for fire trucks and the like
US3698487A (en) * 1970-11-12 1972-10-17 Ato Inc Road maintainer attachment
US5701693A (en) * 1996-01-22 1997-12-30 Edge Development, Inc. Berm clearing attachment for road clearing vehicles

Similar Documents

Publication Publication Date Title
US1997001A (en) Bulldozer
US3503456A (en) Mounting linkage for rippers
US2517582A (en) Tractor mounted vehicle loader
US2718312A (en) Material handling apparatus
US2846094A (en) Tractor operated trencher
US2820555A (en) Power shovels or the like
US2603374A (en) Loading attachment fob tractors
US3946506A (en) Trimmer type road construction apparatus with pivotally connected conveyor
US3862697A (en) Front loading hydraulic excavator
US3170300A (en) Tractor mounted cable laying device
US3302317A (en) Grader
US3776318A (en) Earth working machine including scraper blade means
US3101794A (en) Angular adjusting means for a land clearing implement
US4088236A (en) Multiple use earth working machine
US1936518A (en) Road grader
US2101666A (en) Snow moving device
US3893780A (en) Ejector bucket for earth finishing machine
US2709859A (en) Hydraulically operated back-filling apparatus
US3121964A (en) Large capacity bulldozer
US3249026A (en) Construction machines
US3528509A (en) Bulldozer blade with extendible cutting edge
US3749262A (en) Power shovel with scraper blade releasably attached to the shovel bucket
US3390533A (en) Machine for laying cable and the like
US2849809A (en) Ditcher with divergent wings
US3250410A (en) Mounting structure for earth moving apparatus