US2777659A

US2777659A - Carriage bracket for head anchor

Info

Publication number: US2777659A
Application number: US438522A
Authority: US
Inventors: Charles H Meysan; Frank H Dodge
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-06-22
Filing date: 1954-06-22
Publication date: 1957-01-15
Anticipated expiration: 1974-01-15

Description

2 SheetsSheet 1 Filed June 22, 1954 Charles H Meysan Frank H. Dodge INVENTORS Jan. 15, 1957 c. H. MEYSAN ETAL 2,777,659

CARRIAGE BRACKET FOR HEAD ANCHOR Filed June 22, 1954 2 Sheets-Sheet 2 Q 62 s4 8 V 70 0 Char/es H.Meysan Frank H. Dodge IN V EN TORS States atet @fifice Mid CARRIAGE BRACKET FOR HEAD ANCHOR Charles H. Meysan, Lone Pine, and Frank H. Dodge, Live Oak, Calif.

Application June 22, 1954, Serial No. 438,522

3 Claims. (Cl. 248-226) This invention relates to a head anchor, and particularly to a head anchor to be utilized in mucking operations so that a mucking bucket can be moved continuously across a mucking area without missing portions thereof.

in large mining and other operations, it is customary to shoot down a large portion of the face to provide a large area of so-called muck which will then be moved from the muck face to a dumping pit or chute by means of a socalled slushing operation. Heretofore, it has been customary to provide a large number of anchor pins on the shot face and to anchor a pull-back sheave on first one and then another of the anchor pins with the pull-back cable being entrahied through the sheave and mounted on a drum of a pulling cable device so that a slushing bucket can be drawn back and forth over the muck area until a path has been cleared from the anchor pin to the dumping chute. As soon as the path from the chute to one pin has been cleared, the sheave will be moved to the next adjacent pin and a second path will be cleared. It is found that after this has been accomplished, there will be a V-shaped ridge of muck left between the two lanes, and it is necessary to shovel or otherwise move this muck into the path of the bucket in order to secure a clean operation. Not only is this expensive in that it is necessary to provide the necessary labor for moving the muck into the path of the mucking bucket, but extremely hard physical labor is involved in moving the pull-back sheave from one anchor pin to the next. Also, it is found that the anchor pins and the necessary wedges and connections therefor are a material item of expense when a large number of them must be used on the shot face.

In the construction according to the present invention, the plurality of anchor pins have been eliminated and only two of such pins are used, one at each extreme edge of the muck area. An anchor cable is then stretched between the two pins, and a carriage device presently to be described is mounted for sliding engagement on the cable and has means for locking the carriage in any desired position thereon, and means on the carriage for attaching a pull-back sheave thereto so that the pull-back sheave may be gradually advanced from one pin to the other so that no ridges of muck will be left to be handled by hand or other equipment.

It is accordingly an object of the invention to provide an improved method of slushing.

it is a further object of the invention to provide an improved head anchor for a slushing operation.

it is a further object of the invention to provide an improved carriage for securing a pull-back sheave on a head cable.

Other objects and many of the attendant advantages of the present invention will be apparent from the following detailed description taken in conjunction with the accompanying drawing in which:

Figure 1 is a schematic illustration of a mine face showing the manner of attaching and utilizing the head anchor;

Figure 2 is a top plan view of the carriage;

Figure 3 is a longitudinal elevation of the carriage taken substantially on the plane indicated by the section line 33 of Figure 2;

Figure 4 is a cross-sectional view of the carriage taken substantially on the plane indicated by the section line 4 4 of Figure 3; and

. Figure 5 is a perspective view of a wedge for anchoring the carriage on the anchor cable.

In the exemplification according to the invention, a mine face 10 is provided from which a quantity of muck is shot down into the muck area 12. A pair of

anchor pins

14 and 16 are mounted at the extreme opposite edgesof the muck area 12 and an anchor cable 18 is stretched between the

pins

14 and 16. A carriage, indicated generally at 20 is slidably mounted on the cable 18 and is provided with a plurality of apertures for receiving a hook 22 of a pull-back sheave 24.

A slushing bucket 26 is provided with a pull-back cable 23 which is attached to the rear end of the bucket 26 and extending in entrained relation through the sheave 24 to a pull-back drum 30 of a winch indicated generally at 32. A forwarding pulling cable 36 is mounted on the forward end of the bucket 26 and will also be entwined over a drum 31 for pulling the bucket forward to a dumping pit or other receptacle (not shown).

The carriage 2 9 is constituted of a substantially flat plate 4t bent into U-shaped form to provide

legs

42 and 44 joined by a bight portion 46. One of the legs, such as the leg 42, will be provided with a plurality of sheave mounting apertures, indicated at 48, which may be of any desired number and location on the leg 42.

The opposite leg, such as the leg 44, is provided with a bent out lip 50 to provide a substantially diverging hook with relation to the leg 42.

A notch 52 is cut out of the bight portion 46 and extends upwardly a predetermined distance into the

legs

42 and 44. Upstanding

ribs

54 and 56 are provided on opposite sides of the slot 52 and extend around the bight portion 46 and upwardly on the

legs

42 and 44. The portion extending upwardly on the leg 42 preferably terminates adjacent the apertures 48 and in spaced relation from the edge of the leg 42. The end of the

ribs

54 and 56 extending upwardly over the leg 44 preferably terminates in integral relation with the lip portion 50 to reinforce that portion of the carriage. Preferably the bight portion of the device is of such size that the cable 18 fits snugly therein and a wedge member 60 having a forward longitudinally convex face 62 is provided for engagement with the cable 18 to lodge it solidly in the bight 46 and prevent the loafer from sliding on the cable 18. The rear face 64 of the wedge 60 is substantially flat but is provided with a concavity extending transversely thereof to provide a pair of wedge surfaces 65 and 68 for cooperating with the bottoms 7 G and 72 of the slot 52.

A loop-like handle 74 is attached to and rigidly mounted I with the wedge 60 and preferably extends outwardly from the face 64 adjacent the top edge thereof so that when the wedge is picked up by the handle, it will hang in an inclined position and be readily inserted into the slot 52 into wedging relation with the cable 18. The top of the wedge is provided with a substantially flat surface 76 so that the wedge may be tapped with a hammer or other tool to drive it into firm engaging relation with the cable 18 and the

tapered surfaces

66 and 68 into locking relation on the end surfaces 70 and '72. The plurality of transverse apertures 78 are provided in longitudinally spaced relation transversely of the wedge 66 and the pair of

slots

86 and 82 will be provided in the

upstanding ribs

54 and 56 for alignment with the apertures 78 so that a pin 84 may be inserted through the slots and 82 and one of the apertures 78 to retain the wedge in position in the slot 52. If desired, a cotter key 86 may be placed in the end ofthe pifi 83"topreventits' being lost therefrom while thedeviceis beingcarried'about:

In the operation of the device according to the invention, the face will be shot down to providethe muck area; ai1d"thepins 14211'1516 will 'beins'ertd'inthshbt facef after-which thecable18 wilIbe"strethedifi'place with the carriage hooked thereon and secu'redir'iahy de siredpositioiijby means 'o'f the" wedge 601' The pullback Cable"2 o will be entrained through" thesheave 2 4 which" will be engaged with one of the apertures '48 ofthe'car riageand attached 'to"the rearof theslushing bucket and j loosenthe "sairi'e;"afterwhich"the carriage will beslid alon'g the cable the 'desired amount so m r ne bucket will traverse "a positiona'djacen't theedg'eoi 'the path originally slushed so that the muck will be" continuouslycleaned from one" 'sideof'theinilck' area "to "the other;

Itfw'ill thusb'e seenthatth'e present invention provides a device b'ywhicha slushin'g operation rn'ay'b'e started at one side "or'anyother position on a rnuck pile and con tin'uedto anyother' desired position while removing -all of th-' materia1 therein' so thatnornake' up or extra labor will-be required to'rnake a clean slushing job;

For purposes of exemplification; aparticula'r embodiment'ofthe' invention has been shown and described according to the "best present'understanding thereof. How ever, itwill b'e apparent'tothoseskilled inthe art that various changes a'ndmodifications inthe construction and arrangeme'rifof the" parts'thereof may be readily resorted to without departing from'thetruespirit' and' scope' of the invention.

Whatisclainied' as 'newis as follows: 7

1 In a head anehor, a carriagecomprising a'substantially' U-shaped plate; one leg ofsaid U-shapedplate' hav ing a sheave mounting: aperture therein, the other leg of said" plate having a portion" bent out to'p'rovide a diverging lip; said' plate 'having a" notch in the" bight' po'r tion;s aid'notch'eirtending into the'le'gfp'ortions, an upstanding ribadjac'enfleachside of'said notch; said ribs'mer'ging into said lip"oi1 the lip side 'of'sa'id plate andterrninating in spaced relation to theend of'the'bther legjoftheplate;

a wedgeslidably mounted'in said'nbtch; one"face"ofs'aid wedge"being" longitudinally" convexfor wedging a cable" 4. into said bight, the other side of said wedge being trans- VB'I'Sly"CdIfC8IV6't6 "tightef'said"wedgein said fiOtChI' 2. In a head anchor, a carriage comprising a substantially U-shaped plate, one leg of said U-shaped plate having a sheave mounting aperture therein, the other leg of said plate having a portion bent out to provide a diverging lip, said plate having a notch in the bigh't portion, said notch extending into the leg p ortions. an upstanding rib adjacenteach side of said not'c h;-- said ribs merging into said lipon the lip side of said plate and terminating in spaced relation to' th'e eiid of the other igbrnie plate, a wedge slidably mounted in said notch, one face of said wedge being longitudinally: waverfor' we'dging a" cable into said bight, the other side-of said wedge being transversely concave to tighten saidw'edg'e 'in saidnotch, a looplilte handle rigidly fixed on said Wedge adjacent the large end and extending outwardly from the side of the wedge having the concavity.

3. carriage coinprising a substantially U-shaped plate, said plate includingspaced"legs'interconnectedby a bight portion, saidplate having. a' notch in said bight portion, said notch" extending into said legs, an upstanding rib on each of said legs'disposed oneach side of said notch, a wedgeslidably niounted in said notch andadapted to anchor said platefto a' cable, said ribs and'wedge having selectively 'aligaaisieapenures therein, and a pin extending throughth'e aligiied aperturesof'saidribs and wedge, one face" of said 'wedge being longitudinally convex for wedg'ing'a cable into said bight, the opposite face of said wedge having a tr -ansver'sely concave portion for tightening said wedge'in said notch.

ReferencesCitedinthe file of this patent UNITED sTAT Es -PATENTs 603,168 Broinley Apr. 6, 1898 938,655 Eastman Nov; 2, 1909 1,442,862 Curtis{ a- Ian. 23, 1923 526,355} Mechlingr Feb. 17, 1925 1,541,971 li ahrpert" June 16, 1925 1,719,182 Ioha'nsen July 2, 1929 1,723,383 Srn'ith' Aug. 6, 1929 740,364 Del Maso Dec. 17, 1929 2,643,848 Hofinian* June 3!), 1953 2,666,613 Astlefo'rd a Ian. 19, 1954 FOREIGN PATENTS 706,676 Great Britain Mar. 31, 1954