US3524507A - Slushing scraper - Google Patents
Slushing scraper Download PDFInfo
- Publication number
- US3524507A US3524507A US685641A US3524507DA US3524507A US 3524507 A US3524507 A US 3524507A US 685641 A US685641 A US 685641A US 3524507D A US3524507D A US 3524507DA US 3524507 A US3524507 A US 3524507A
- Authority
- US
- United States
- Prior art keywords
- arms
- back plate
- scraper
- shoe
- wedge
- 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
Links
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 102220603451 Homeobox protein SIX3_I37A_mutation Human genes 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/58—Component parts
- E02F3/60—Buckets, scrapers, or other digging elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/30—Dovetail-like connections
Definitions
- a scraper is assembled from a back plate, a pair of attaching arms and a locking shoe without the need for bolts or other fasteners, specifically -by hooks at the rear of the arms which couple with apertures in the back plate and forward ends of the arms in a sliding wedge t with a separable shoe.
- This invention relates to a scraper of the so-called slushing type used in mining and other operations Where rocks, earth or muck are to be scraped from a far point to a near point.
- Scrapers of the fkind involved comprise a back plate, which presents a scraping or digging edge, and a pair of arms joined thereto.
- the back plate is quite large and may weigh as much as a ton or more.
- the arms at their forward ends converge to enable a haul line or cable to be attached thereto.
- the objects of the present invention are to enable the arms to be attached to the 'back plate without the need for bolts or other fasteners; to produce nevertheless a rigid, effective coupling of the arms to the back plate; to join the arms at their forward ends in a rigid, effective fashion without bolts and to accomplish this with a onepiece locking shoe; to reduce maintenance; and to enable the back plate to be coupled to the arms in either of two working positions.
- FIG. l is a perspective view of a scraper embodying my invention.
- FIG. 1A is an exploded view, in part fragmented, illustrating the manner in which the arms will be hooked t the back plate;
- FIG. 2 is a perspective View, partly fragmented, illustrating the manner in which the locking shoe fits the arms;
- FIG. 3 is a perspective view, similar to FIG. 2, of another embodiment of shoe
- FIG. 4 is a perspective view, fragmented, of the back plate
- FIG. 5 is an end elevational view on the line 5-5 of FIG. 4;
- FIG. 6 is a top plan view of one of the arms
- FIG. 7 is a top plan view of the assembled scraper.
- FIG. 8 is a side elevational view on the line 8-8 of FIG. 7.
- the scraper of the present invention is identified by reference character 10 and includes a back plate or scraper blade to which are detachably secured a left and right-hand arm 21L and 21R.
- the arms con- 3,524,507 Patented Aug. 18, 1970 ICC verge forwardly, as viewed in FIG. l, and at their free forward ends are joined by a locking shoe 25 which presents an eye '26 to which will be secured a cable for moving the scraper in a forward direction.
- the back plate 20, FIGS. 5 and 7, is provided with a plurality of rearwardly projecting plates or flanges 27 presenting openings as 28 to which a back haul cable can be attached.
- the mode of operation of a scraper of this general kind is well known and need not be described herein.
- the back plate 20 is of convex-concave form and in the operative position illustrated in FIG. 1 the lower edge of the back plate 20 is of solid or uninterrupted form to present a straight scraper edge SE.
- the back plate 20 may be inverted so that the operative edge becomes the edge DE, FIG. 1, which presents a plurality of laterally spaced digging teeth T. In all instances of operation, the -concave side of the back plate will face forward.
- each arm when operatively related to the back plate 20, geometrically present a Wishbone appearance.
- each arm includes a generally straight rear portion 30 and a forward, inwardly curved or bent portion 31 terminating in a forward end 32 of such construction as to enable the attaching shoe ⁇ 25 to interfit wedgingly therewith.
- each scraper arm as 21R and 21L includes a ,dependent portion 35, FIGS. 1 and lA.
- the inner side of the depending portion 35 at the rear of each arm is formed with a hook or claw 37, FIGS. 1A and 6, and this hook is adapted to seat in a corresponding aperture 37A formed at the mid-portion of each lateral edge or side of the back plate 20.
- each hook 37 is L- shaped and includes a leg 38 extending inward of and generally at right angles to the dependent portion 35 at the rear end of each of the scraper arms.
- the hook 37 includes a rearwardly extending toe 39 at right angles to the leg 38, the relationship being such that each hook or tang as thus constructed, FIG. 1A, will fit into the related aperture 37A when the related scraper arm is appropriately manipulated as hereinafter described.
- the openings 37A in the back plate in effect are hooded or shrouded, top and bottom, by forwardly projecting lugs 41 and 42 integral with the back plate.
- the opposed faces 41F and 42F of the lugs 41 and y42 define the limits of the length of each aperture 37A, corresponding in dimension to the height H, FIG. 1A, of the related hook 37.
- the lugs serve as guides for and during the course of seating the hooks 37 when coupling the scraper arms to the scraper back plate, and also serve to rigidfy the arms and absorb stresses during operation of the scraper.
- Each aperture or socket 37A is bounded at the outside by a strap 44, and the forward faces of those straps are rounded to facilitate movement of the hooks 37 into the aperture.
- the back plate is of concave-convex form, and preferably increased rigidity and maintenance of position between each scraper arm and the back plate is achieved by channeling the inside face of the dependent portion 35 of each arm to present a curved channel or groove 46, FIG. 1A, into which will neatly lit the curved lateral side edge of the back plate when an arm 21L or 21R is operatively related to the back plate, as shown in FIG. 7.
- Stop lugs 50 and 51 are formed on the attaching arm adjacent the channel 46 on the upper and lower sides of the hook 37, and in fact serve in part to define the channel 46. These stops will bear on the front side of the back plate 20, above and below the related apertures, as will be apparent in FIG. 1.
- the arms In coupling the separate arms to the back plate, FIG. 1A, the arms initially extend generally parallel to the plane of the back plate. Then, with the hooks 37 aligned with the apertures I37A, the dependent portions 35 are moved inward toward one another, as shown by the dashed arrows in FIG. 1A, to the extent that the hooks or tangs 37 -ft over the straps 44. At this stage of assembly, the leading ends of the hooks 37 fit neatly between and are confined by the ledges 41 and 42. Then, the two arms 21L and 21R, FIG. 1A, are turned toward the observer, to bring the forward ends 32 of the arms inward toward one another, and in the course of such movement, the hooks 37 turn 90 into the apertures 37A.
- the lateral side edges of the back plate y move into the curved channels 46.
- the first stage of assembly is complete When the stops 50' and 51 abut the forward face of the back plate 20 as it is viewed in FIG. 1A, and in this connection it may be noted that the side edges of the back plate 20 are rounded in a convex fashion at 53 and 54, FIG. 4, so as guide and neatly accommodate the stops 50 and 51.
- each forward end of the related scraper arm is formed with an inner flat surface 60, and referring to FIGS. 6 and 7, these surfaces 60 are tapered so that the two considered together are slightly divergent in a forward direction so as to afford a wedge-shaped opening.
- the locking shoe includes a wedge-shaped medial rib 62, which widens in a forward direction, and this rib is adapted to t between and bear on the corresponding divergent surfaces 60, which is to say that the shoe 25, FIG. 2, will be moved forwardly in the course of the last stage of assembly so that the wedge-shaped rib 62 thereof fits between the spaced forwardrnost end portions of the scraper arms.
- each scraper arm is formed with an outwardly projecting ledge or rib 65 tapered front to rear in elevation so that the forward end thereof FE is of greater thickness than the rear end RE.
- Each ri'b 65 as thus provided is adapted to fit in a related internal channel 66 formed within the locking shoe 25, there being a channel 66 on each side of the medial or central rib 62 of the locking shoe as shown in FIG. 2.
- the channels 66 are fully complemental to the ribs 65, and the dimensioning is such that each rib 65 wedges tightly in the related channel 66 during forward sliding movement of the locking shoe incidental to locating the rib 62 thereon between the opposed spaced surfaces 60.
- a full tight fit may be realized by repeated blows with a sledge hammer.
- the forward ends of the arms 21L and 21R are provided with grooves 21G, FIG. 2, in which a bolt may be fitted and tightened merely to hold together the first stage assembly while the shoe 25 is being seated.
- the apertures 37A are each at the medial point of the height of the back plate.
- the apertures are identical and this is equally true of the hooks 37. Therefore, the back plate may be coupled to the arms 21L and 21R with the edge SE downward, FIG. 1A, or with the edge DE downward to present a different type of digging edge.
- the forward pull cable when attached to the cable eye 26 assists in maintaining a tight action between the wedge shoe and the convergent forward ends of the arms that are intertted therewith.
- the force is not such as to induce loosening.
- Disassembly is the reverse of the assembly stages described above, and in this connection it may be noted that the tapered rib 62 on the shoe aids in spreading the arms 21L and 21R during disassembly which is to say that the rib ⁇ 62, FIG. 7, when struck with a sledge which delivers a rearward blow tends to split the scraper arms and Iwedge them apart.
- FIG. 3 A modification in this regard is illustrated in FIG. 3 where the scraper arms 21L and 21R are identical to what has been described above with the exception of the configuration at the forward ends thereof to specifically accommodate a slightly different shoe 75.
- the inside faces at the remote free ends of the arms 21L and 21R are provided (each) with a laterally extended wedge-shaped projection 76.
- Each projection is of greater height at the forward end 76F than at the rear end 76R.
- the opposite sides of the shoe 75 are channeled at 76C to be fully complemental to the projections 76, so that again when the free ends of the arms 21L' and 21R are brought into juxtaposition, FIG. 3, the shoe is simply slid forward to establish a wedge lock between the tapered projections or ribs 76 and the channels 76C.
- the wedges 76 are T- shaped in section. This affords a pair of upper and lower channels 80 and 81 inward of the wedges 76 at the inside face of the terminal forward end of each arm 21L and 21R.
- the channels 80 and 81 are themselves tapered complementally to a related pair of tapered ribs or wedges 80W and 81W superimposed one on the other in vertically spaced relation at the lateral sides of the shoe 75.
- the opposed faces Ff) and F1 of a pair of ribs 80W and 81W will slide forward in the related channels 80 and 81 during forward forcing of the shoe 75, FIG. 3, establishing an additional wedge fit between the shoe 75 and the arms 21L and 21R.
- shoe 75 is symmetrical throughout on all sides of the medial rib or strap 85, with the exception of course of the cable attaching eye 86 at the forward end thereof.
- the configuration of the free ends of the scraper arms 21L and 21R', FIG. 3, is also symmetrical, and hence the shoe 75 is fully reversible so that when worn on the underside may be reversed.
- the scraper arms at the rear are widely separated and coupled pivotally to the opposed sides of the back plate, coupling being accomplished by hook-like projections 37 on the arms fitted into sockets in the back plate allowing for pivotal movement of the arms.
- the arms are channeled or grooved at 46, FIG. 1A, to receive the curved side edges of the back plate which serves to rigidify the assembly, and stops as 50 and 51 on the inside of the arms bear on the forward face of the back plate serving to absorb working stresses, to limit inward pivotal movement of the arms and to tension the arms when the locking shoe is driven home.
- a slushing scraper comprising, a back plate having a working edge at the bottom and a hook receiving opening at each side edge thereof, a pair of arms, one each detachably secured to the side edges of said back plate, each arm including a rear end having a hook and groove arrangement coacting with said hook receiving opening and side edge to cause the hook to detachably engage in said opening and said groove to receive the side edge when the rear portion is seated, and a forward end having a longitudinally extending wedge shaped portion, and a locking shoe having longitudinally extending wedge shaped sockets for slidably mating with the wedge shaped portions of said arms to lock the forward ends of the arms together, the wedge shaped portions on said arms and the wedge shaped sockets on said locking shoe formed to lock References Cited UNITED STATES PATENTS 2,073,338 3/1937 Durkee.
- Claim l line 5, after "end” insert portion; Claim 2 line l, change “sliding” to --slushing-- Claim 3, line l, change "sliding" to slushing.
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68564167A | 1967-11-24 | 1967-11-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3524507A true US3524507A (en) | 1970-08-18 |
Family
ID=24753067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US685641A Expired - Lifetime US3524507A (en) | 1967-11-24 | 1967-11-24 | Slushing scraper |
Country Status (1)
Country | Link |
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US (1) | US3524507A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3794195A (en) * | 1971-09-09 | 1974-02-26 | Sperry Rand Corp | Quick-attaching mechanism |
US20180209118A1 (en) * | 2017-01-24 | 2018-07-26 | R & B Leasing, Llc | System and method for removing material from a sloping surface |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2073338A (en) * | 1935-07-13 | 1937-03-09 | Roy J Durkee | Connecter |
US2626471A (en) * | 1947-07-21 | 1953-01-27 | American Brake Shoe Co | Cable operated drag scraper |
US2685848A (en) * | 1951-10-15 | 1954-08-10 | William A Meighan | Slotted tunnel ship clamp |
US2716824A (en) * | 1950-09-08 | 1955-09-06 | Alloy Steel And Metals Company | Slushing scraper |
US2743540A (en) * | 1952-02-14 | 1956-05-01 | American Brake Shoe Co | Slushing scraper with detachable bail arms |
US3164914A (en) * | 1963-02-20 | 1965-01-12 | Fahralloy Canada Ltd | Slusher scraper structure |
US3261360A (en) * | 1964-02-27 | 1966-07-19 | Richard J Frank | Interlock hospital chart holder |
US3340628A (en) * | 1964-01-28 | 1967-09-12 | Fahralloy Canada Ltd | Slushing scraper |
US3392465A (en) * | 1965-06-04 | 1968-07-16 | Andrew C. Bluemel | Scraper |
-
1967
- 1967-11-24 US US685641A patent/US3524507A/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2073338A (en) * | 1935-07-13 | 1937-03-09 | Roy J Durkee | Connecter |
US2626471A (en) * | 1947-07-21 | 1953-01-27 | American Brake Shoe Co | Cable operated drag scraper |
US2716824A (en) * | 1950-09-08 | 1955-09-06 | Alloy Steel And Metals Company | Slushing scraper |
US2685848A (en) * | 1951-10-15 | 1954-08-10 | William A Meighan | Slotted tunnel ship clamp |
US2743540A (en) * | 1952-02-14 | 1956-05-01 | American Brake Shoe Co | Slushing scraper with detachable bail arms |
US3164914A (en) * | 1963-02-20 | 1965-01-12 | Fahralloy Canada Ltd | Slusher scraper structure |
US3340628A (en) * | 1964-01-28 | 1967-09-12 | Fahralloy Canada Ltd | Slushing scraper |
US3261360A (en) * | 1964-02-27 | 1966-07-19 | Richard J Frank | Interlock hospital chart holder |
US3392465A (en) * | 1965-06-04 | 1968-07-16 | Andrew C. Bluemel | Scraper |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3794195A (en) * | 1971-09-09 | 1974-02-26 | Sperry Rand Corp | Quick-attaching mechanism |
US20180209118A1 (en) * | 2017-01-24 | 2018-07-26 | R & B Leasing, Llc | System and method for removing material from a sloping surface |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CHEMICAL BANK, NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:AMALLOY CORP., A N.J. CORP.;REEL/FRAME:004893/0288 Effective date: 19880311 Owner name: CHEMICAL BANK, A NEW YORK BANKING CORP.,NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:AMALLOY CORP., A N.J. CORP.;REEL/FRAME:004893/0288 Effective date: 19880311 Owner name: CHEMICAL BANK, 110 EAST 59TH STREET, NEW YORK, NEW Free format text: SECURITY INTEREST;ASSIGNOR:AMALLOY CORP., A N.J. CORP.;REEL/FRAME:004893/0288 Effective date: 19880311 Owner name: CHEMICAL BANK, A CORP. OF NY Free format text: SECURITY INTEREST;ASSIGNOR:AMALLOY CORPORATION;REEL/FRAME:004854/0891 Effective date: 19880311 |
|
AS | Assignment |
Owner name: AMALLOY CORP., A CORP. OF NJ Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ABEX CORPORATION;REEL/FRAME:004890/0859 Effective date: 19880310 |