US2932496A - Disintegrating head for continuous miner - Google Patents

Description

April l2, 1960 A. l.. BARRETT 2,932,496

DISINTEGRATING HEAD FOR CONTINUOUS MINER Filed March 50, 1954 2 Sheets-Shree?I l im lil fzwmaf: 222km 22e farmi?.

April 12, 1960 A. 1 BARRETT 2,932,496

DISINTEGRATING HEAD FOR CONTINUOUS MINER Filed March 50, 1954 2 Sheets-Shea?l 2 nwnar: 022220? if? @427622.

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United States Patent O 2,932,496 y DISINTEGRATING HEAD FOR CONTINUOUS MINER Application March 30, 1954, Serial No. 419,657 z claims. (crez- 26) This invention relates to a'disintegrating head for a continuous miner .and `more particularly to a disintegrating head of a rotary drum type having paddles secured to the drum for moving the disintegrated mineral rearward- 1y` away from the working face during the mining operation.

An object of this invention is to provide an improved disintegrating head. Another object is to providean improved rotary toothed drum type disintegrating` head for a continuous miner, having improved paddles `on the drum for moving the mineral dislodged Yby the drumteeth. A further object is to provide an improved rotary drum type disintegrating head having paddles and cutter supports secured in an improved manner to the paddles and to the drum. Another object is to provide an improved paddleI and cutter support arrangement for a drum type disintegrating head. These and other objects and advantages of the invention will, however, hereinafter more fully appear in the course of the ensuing description and as more particularly pointed out in the appended claims.`

This application is a continuation-in-part of my application Serial No. 320,665, led November l5, 1952, now matured into Patent No. 2,7 88,200, patented April 9, 1957.

In the accompanying drawings there are shown for purposes of illustration two forms which theY invention may assume in practice. i

In these drawings:

Fig. l is a fragmentary plan view of a disintegrating head in which a preferred illustrative form of the invention is embodied. p

Fig. 2 is an enlarged view in central longitudinal vertical section taken on line 2--2 of Fig. l.

Fig. 3 is a perspective view of the forward drum portion of the head, with the latter in raised position.

Fig. 4 is an enlarged perspective view of a modified form of disintegrating head, with the head in lowered position.

Fig. 5 is a plan view of the outer drum portion of a disintegrating head shown in Fig.` 4.

Figs. 6 and 7 are longitudinal vertical sections taken on lines 6-6 and 7-7 respectively of Fig. 5, illustrating details of the modiiied drum structure. f As disclosed in my application Serial No. 320,665, above referred to now matured into Patent No. 2,788,200,v patented April 9, 19,57, the improved disintegrating head, generally designated 1, is shown associated with a cony'2,932,496 Patented Apr. 12, 1960` ward portion, extends forwardly and downwardly beneath the disintegrating head.

In both illustrative forms of the invention, the disintegrating head includes a swingable frame or guide bar structure 6 having parallel vertical side bars 7 about the margins of which endless side disintegrating chains 8 are guided for orbital circulation, and driven by these side chains and arranged transversely of the head frame between the forward portions of the side bars is a toothed disintegrating drum or bit-carrying roller 9, of an improved design. The parallel side bars of the head frame tinuous miner having a frame 2 on which the disintegratare suitably rigidly connected by transverse frame portions 10 which provide suitable guideways for the endless head conveyor 4.

Arranged transversely of the frame 2 in coaxial relation with the pivot 3 of the disintegrating head is a drive shaft 11 and secured to this cross shaft (Fig. 2) are chain sprockets 12 which engage and drive the endless side disintegrating chains 8 of the disintegrating head. Also secured to and driven by this cross shaft are sprockets 13 which engage and drive endless side chains 14 of the head conveyor 4, which is of a conventional construction. These conveyor side chains have usual transverse scraper bars or iiights 15 secured thereto at intervals along their lengths and-these scraper bars are movable over the top surface 16 of the transverse upper portion 10 which extends between and is secured to the vertical side bars of the head frame.

The motor driven means for driving the cross shaft 11 is fully disclosed in my above mentioned application now matured into Patent No. 2,788,200 and since it does not per se enter into the present invention, a disclosure thereof is herein unnecessary, other than to state that the side disintegrating chains, the rotary drum and head conveyor may be driven irrespective of the angular position of the head frame about its pivotal axis relative to the support 2. Any suitable means may be `provided for swinging the head frame in vertical planes about its pivot and for holding the head frame in its different angular positions.

Now referring to the detail structure oi' the improved toothed drum of the preferred embodiment, shown in Figs. l to 3 inclusive, it will be noted that the cylindrical body of the drum 9 is composed of semicircular complemental parts 17 suitably secured together, as by screws 18, and these drum-parts when rigidly secured together surround and are keyed to a cross shaft 19 suitably journaled Within the sides of the forward portion of the head frame. This cross shaft 19 is suitably driven by the side disintegrating chains 8 in a well known manner. The toothed drum extends transversely between the inner sides of the vertical side bars 7 of the head frame and has secured thereto, as by welding or otherwise, a series of blade-like vanes or paddles 20 projecting radially from the drum-body and these paddles serve to convey the disintegrated mineral upwardly and rearwardly to discharge onto the head conveyor 4. Arranged in staggered relation on the drum and secured, as by welding or otherwise, to the rear sides of the paddles 20 and to the drum-body are cutter supports 21 which carry detachable cutting teeth or bits 22 and these drum teeth, during operation of the miner, engage and tear away `the solid mineral from the mine vein.

Extending transversely between the vertical side bars of the head frame rearwardly of the dium is a toothed comb or grizzly 23 having teeth 24 separated by vertical arcuate slots 25 through which the drum teeth pass as the drum revolves and this grizzly serves to deilect the disintegrated mineral from the drum and to direct it rearwardly onto the head conveyor 4.

In the modified construction, shown in Figs. 4 to 7 iuelusive, the swingable frame structure, side chains, the grizzly and the drum or roller are similar to those of the form above described, andv the drum 9 has its cylindrical body peripherally grooved at 26 at spaced points along its length and these grooves are annular and extend circumferentially of the drum. Secured, as by welding or otherwise, to the drum-body are bit supports orhlugs' 21' having portions 27 projecting Within the grooves 26 so that theV side walls of the grooves provid'e'arigid lateral support'sfor teeth or bits 22' secured, as by set screws 28, within suitable sockets in the supportsor lugs. Thei'disintegrating teeth are arranged in staggered relation on the drum, as in the preferred form of the invention, and secured, as by Welding or otherwise, to the drum-body and to thehit supports or lugs are radial paddlesZ. 'The bit supports have secured, as by welding or otherwise, to their lugs narrow vertical backing plates 29 which provide abutments at the rear surface of the' cutter bits and certainoi these plates abut `at 30 the adjacent paddles, as shown in Fig. 6. As shown in Fig. 7certain of the paddles are secured, as by welding, to the backing plates 29, as at 31, while others of the paddles extend between andare secured,` as by welding, to the bit lugs, as shown at 32 in Fig. 7. As shown in Fig. 6, certain Aof the paddles extend between and are secured, as byvwelding, to the backing plates 29, as shown at 33. The head conveyor 4', in this instance, comprises parallel Vflight conveyor chains 34, as shown in Fig. 5, and these parallel conveyor chains operate in unison to convey the distintegrated mineral rearwardly along the head frame. Y

Inzboth forms of the invention the forward surfaces of the grizzly teeth are shaped to clear the drurn paddles as the drum is rotated and the grizzly teeth project in adjacency to the paddles so that they tend to deiiect the disintegrated mineral as it is discharged rearwardly from the paddles in a rearward direction toward the head conveyor 4. In the form of the invention shown in Fig. 2, tive paddles are shown while in the form shown in Figs. 6' and 7, there are but four paddles, although, evidently, the number of the paddles may be varied as desired.

ln both forms of the invention the disintegrating head may be swung downwardly about its pivot and when in lowered position may be sumped rectilinear-ly into the mineral of the mine vein near Vthe door level and, after sumping, the head may be swung `upwardly in vertical planes .about its pivot to effect disintegration of the solid mineral between the floor and roof, and nally the head may be retracted from the mine vein at the roof level, all in manners well known to those skilled in the art. As the mineralv is dislodged from the mine vein and disintegrated by the disintegrating chains and toothed drum, the disintegrated mineral is received between the paddles of the Vdrum and these paddles throw the 'disintegrated mineral rearwardly from the drum toward the head conveyor 4 and the latter conveysthe disintegrated mineral rearwardly of the head to discharge onto the rear discharge conveyor of the miner.

l As a result of this invention an improved disintegrating head is provided for dislodging and disintegrating the mineral of a solid mine vein. By the provision of the improved arrangement of the teeth or cutter bits on the drum or roller and the novel relation of the conveying paddles withrrespect to theVdrum-body and the tooth or bit supports, the disintegrated mineral is conveyed rearwardly away from the workingV facev in an vimproved manner. i will ybe clearly apparent to those skilled in the art.'

These and other advantages of the invention While there are in this application specically described two forms which the invention may assume 1n practice, it will be understood that these forms of the same are shown for purposes of illustration and that the invention may be further modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

vrWhat I claim as new and 4desire to secure by Letters tion tooth supporting` and vane'bracing means secured tothe drum peripheryand'to saidjvanes as byw'eldinig; said paddlelike mineral conveying vanes providing trans-Y verse support for respective tooth supporting and vane bracing means attached thereto, said tooth supporting and vane bracing means having circumferentially extendl ing webbing with curved inner surfaces fitting against the l curvedexterior surface of said drum and said tooth sup# porting and vane bracing means supporting cutting teeth radially outwardsubstantially .beyond the cylinder of rotation generated by the radially outward edges of said vanes to the degree necessary for complete mineral dislodgrnent from the mine face` before the mineral comes into conveyable relation with said mineral conveying vanes; v

V2A disintegrating head comprising a'jhead frame pivoted to swing. vertically, a cylindrical d rurnhaving multiplepaddlelike mineral conveying vane means with Aeach saidvane means extending longitudinally the length of the drum and extending radially of the drum axis, ntul-V tiple combination tooth supporting and vane bracing means secured to the drum periphery and to said vane means as by welding, each said vane means presenting a front mineral engaging and conveying face the entire length of said drum except where interrupted by respec tive said tooth supporting and Vane bracing means, each said vane means lsufiiciently radially extended for eleci tively engaging Aand conveying the mineral' dislodged away to the rear'frorn the mine face, said tooth supporting and vane bracingl means supporting mineral cutting and dislodging teeth radially 'outward substantially'k bei yond the cylinder of rotation generated by thefradially outward edges of said vane `ineans to the degree necessary for complete dislodgrnent of the mineral from the .mine face before the mineral ,cornes into conveying relation with said mineral conveying vane means.

References Cited in thele of this patent UNITED STATES PATENTS 888,900 Jackson May 26 19,08 1,332,662 Gross Mar. 2,l 1920 21,336,657 Schmidt k v Apr.. 13, 1920 1,538,947 Newman ;.May 26, 1925l ,2,287,230 Cartlidge k June 23, 1942 2,612,361 Hagenbook Sept. 30,*1952 2,624,129 Steece A Jan. v6,1953

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