US1142457A - Excavating and conveying apparatus. - Google Patents

Description

APPLICATION FILED F`EB. 3, 1913.

Patented June 8, 1915.

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7HE NORRIS PETERS C0.. FHOTD-LITHO., wAsl -llNGrUN, D. C.

ILL. POTTER EXCAVATING AND CONVEYING APPARATUS.

APPLICATION FILED FEB. 3. |913.

1 ,142,457", Ptented J 1111e- 8, 1915.

4 SHEETS-SHEET 2.

THE MORRIS PETERS COI, PHoTC-LlTHa., WASHINGTON, DA C.

J. Li POTTER. XCAVATING AND CONVEYING APPARATUS.

APPLICATION FILED FEB. 3 |913.

Patented June 8, 1915.

4 SHEETS-SHEET 3.

KW Q INVENTOR- ATTORNEY.

TH NORRIS P ETERS C0.. PHOTO-LITHO., WASHINGTON. D. C.

J. L. POTTER.

ExcAvATlNG AND coNvEYlNG APPARATUS.

Y APPLICATION FILED FEB. 3. |913. 41,142,457. Patented June 8, 1915.

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THE NORRIS PETERS CO., PHOTO-LITHOA, WASHINGTON, D. C.

JOSEPH L. POTTER, OF INDIANAPOLIS, INDIANA.

EXCAVATING AND coNvnYINe APPARATUS.

Specification of Letters latent.

Patented June s, 1915.

Application led February 3, 1913. Serial No. 745,888.

T0 all whom it may concern.'

Be it-known that I, JOSEPH L. POTTER, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Excavating and Conveying Apparatus, of which the following is a specification, reference being had to the accompanying drawings, and to the letters and gures of reference marked thereon.

This invention relates. to apparatus for excavating or hoisting or for conveying substances or earth from excavations, the invention having reference more particularly to portable or movable machinery or apparatus adapted for excavating trenches for sewers and for conveying theearth removed from the trenches and dumping it back into the trenches after completion `of portions of the masonry or sewer structure. l

An object of the invention is toprovide improved excavating and conveying apparatus of such construction as to enable a small number of men tocarry on the work of sewer construction expeditiously andeconomically, especially by the use of a'drag bucket or scoop for excavating and'hoisting the earth, a particular object of the invention being to provide improved means that shall operate automatically lto guidev the bucket or .scoop as the excavating proceeds downward into the earth and `also'as the work advances longitudinally of the line of A still further object is to provide improved apparatus for operating the excavating implement, and also improved means for operating the conveying carV preferably employed for delivering the earth back into the trench. y

With the above mentioned and other. ob-

jects in view the invention 'consists in improved excavating and conveying apparatus comprising Van engine car Vprovided with an .adjustable head sheave and also a relatively long'reach-arm that is supported at its-.free end on the ground, eitherV on the surface level of the ground or on `the bottom'of the trench being excavated, the reach-arm carrying a tail sheave required for drawing a the trench .after having been drawn out loaded, the invention compri-sing also improvements in various parts ofthe apparatus such as the scoop. and means `foroperating it, in a conveying car and means for operating it, and in a trestle for supporting the conveying car; and the invention lconsists further in the novel parts and in the combinations and arrangements of parts as hereinafter particularly described and claimed. Y

Referring to the drawings, Figure 1 isa side elevation of the improved `excavating and conveying apparatus partially broken away and shown in 'relation to a section of trench.: Fig. 2, a top plan of the improved apparatus;Fig. 3,'a sectional elevation approximately on the line A A in Fig. 1; Fig. o

a top plan; Fig.7, a perspective'view of a' windingv .drum preferably employed forv operating the excavating implement: Fig. S.

a side elevation of an improved dumping conveying lcar shown in dumping position; Fig.v 9, a fragmentary `section ofthev im-4 proved winding drum and'its driving bull wheel or pulley; Fig., 1Q. a fragmentarvsection approximately on the line E E infFig` 5; Fig. V11. a perspectiveview ofy the head sheave and its frame: Fig. 12, a fragmentary side elevation of the improved trestle shownas adjusted for an inclined ground surface: Fig. 13, a side elevation of theim- -proved'bullwheel partially in section: Fig.

14, a fragmentary perspective view of por- I tions of fthe improvedtrestle; and Fig. 15,

aperspective view of. a reach-arm for carrying the tail sheavereouired for drawing the p excavating implement back onto the bottom ofthe trench.

"l Throughout the different .figures ofthe drawings. like reference characters indicate `like-'elements or features of construction herein lreferred to.`

'.In the `drawings the numeral 1 indicates the ground orA earth' and 2 an excavationy therein; 3, 3 and 4 the sheathing in the trench, 5, 5 and 6, 6 the horizontal timbers, and 7, 7 the screw braces for supporting the sheathing to prevent caving in of the sides of the excavation; 3 and 8 indicating the longitudinal track stringers, and 9 and 9 the track rails on the stringers that are usually employed.

Practically carrying out the objects of the invention, suitable engine car is provided which preferably comprises two side sills 10 and 10 and two intermediate sills 11 and 11 provided with a platform 12 to constitute a main frame which is mounted on two axles 13 and 14 provided with wheels 15 and 15 mounted on the track rails to enable the engine car to be readily moved forward as the work proceeds. The engine car includes also an upright frame which preferably comprises two side posts 16 and 16 and also two intermediate posts 17 and 17 erected on the horizontal frame at a relatively short distance forward of the rear end thereof, two braces 18 and 18 being secured to the upright frame and also to the forward portion of the horizontal or main frame of the car. rlhe upright frame preferably is provided also with rear braces 19 and 19 and transverse beams 20 and 21. rihe engine car is provided with two upright guide bars 22 and 22 that are mounted on the rear end portions of the intermediate sills 11 and 11 and serve as frame posts to support two frame members 23 and 23 that are secured to the tops ofthe guide bars respectively and also to the intermediate posts 17 and 17 adjacent the beam 20. A shaft 24 is mounted upon the said frame members and supports a guide sheave 25.

ln order to adjustably support a head sheave for the hoisting cable a suitable frame is provided which preferably comprises two slides 26 and 26 to which al cross bar 27 and two arms 28 and 23 are secured, the slides being arranged to slide vertically in contact with and be guided by the guide bars 22 and 22 which preferably are of channel section, an end bar 29 preferably being secured to the end portions of the arms, and two braces 30 and 30 are secured to the slides and also to the end portions of said arms, the arms supporting a shaft 31 on which is a sheave 32. Said braces 3() and 30 are inclined and the under sides thereof have each a shoulder 33 facing downwardly, which shoulder may be forl led by notching the braces to receive the bail of the drag bucket and prevent the latter from turning around while being hoisted. Suitable provision preferably is made for latching the frame in lowered position so as to prevent the head sheave from moving upward from the desired position, and this is accomplished preferably by means of a shaft 234 mounted on the slides 26 and 26and provided with upwardly extending dogs 35 and 35 and also an operating arm 36 that eX- tends rearwardly below the shaft 31 so as to be engaged and lifted by the ascending bucket bail. rlhe guide bars are provided with projections 37 and 37 to be engaged by the dogs for holding the head sheave in one position and other projections 38 and 38 for similarly holding the sheave in a lower position, the weight of the arm 36 being sufficient to normally hold the dogs in engagement with the projections.

A suitable hoisting engine 39 is mounted on the forward portion of the engine car and includes a winding drum 40 provided with a controlling arm 41, and also another winding drum 42 provided with a controlling arm 43. An auxiliary engine 44 is mounted also on the engine car and it is provided with a sprocket wheel 45. rlhe engines obviously may be variously constructed.

Y A shaft 46 is mounted at a suitable height on the upright frame for supporting pulleys, wheels or the like which may be desired. A winding drum 47 is rotatably mounted on theshaft and has flanges 43 and 49, one end of the drum having a transversly arranged locking key 50 projecting therefrom, the drum having a bore 51 therein. A bull wheel is provided for driving the drum and preferably comprises a channel iron bar 52 that has an axial bore 53 in its middle portion to receive the shaft 46, the bar being adapted to constitute a hub portion and two armsof the wheel. The channel of the bar receives the key 50 and is secured thereto by means of bolts 54 and 54. rlwo other arms of the wheel 55 and 56 are formed also of channel iron and are secured to the bar 52 by means of angle irons 57 and 57. rlhe arms of the wheel are secured to the flange 48 by means of bolts 58 and 58. A rim 59 having flanges 60 and 61 is secured to the ends of the arms by means of angle irons 62, 62', the rim being formed of bent channel iron of suitable width. A grooved driving wheel 63 having a sprocket wheel 64 connected thereto is rotatably mountedH also on the shaft 46 and the sprocket wheel is connected by means of chain belt 65 with the sprocket wheel 45 of the auxiliary engine.

ln order that the tail sheave for guiding the hoisting cable may be in company with the excavating implement as the latter descends with the deepening of the trench, the tail sheave is mounted on a reach-arm which preferably comprises two bars 66 and 67 suitably spaced apart or offset to permit the excavating implement to pass between them, the bars being connected with a hinge bar 63 that is suitably supported, as by the engine car, preferably on the braces 19 and 19. The bars are relatively long so as to reach a considerable distance from the engine car and on the farther end thereof a tail sheave 69 is mounted, theend of the reach-arm being v.preferably provided with l runners 70, 7 0. adapted to slide on the ground when the engine car is moved ahead.

scraping or shoveling, Vand a back 74 for carrying the earth up from the trench, a

. bail 7 5 being pivotally connected to the rearward portion of the sides of the implement by means of trunnions 76, the sides of the implement having lugs 77 thereon to engage the bail for preventing the forward end of the implement from tilting forward and also gougingv too deeply into the ground. The back or rear end of the implement is provided with 'an eye 78 for 'drawing it back into the trench. A cable 79 is connected Vto the winding drum 40 of the hoisting engine and is connected to. and wound about the bull wheel 59 and preferably extends over and is 'guided on a sheave 80 mounted on a shaft 81 that is supported by the upright frame above theshaft 46. The cable is wound upon the drum 40 on being unwound from the bull wheel. A hoisting cable 82 is connected to Vthe winding drum 47 and extends upward and over a guide sheave 88 that is mounted on the shaft 81, the cable extending thence Vupward and over the guide sheave 25 and thence downward under the head sheave 32 and through the reach-arm in contact with the under portion of the roller 71, the cable being connected to the bail 75 or forward portion of the excavating implement. versing or returning cable 84 is connected to the winding drum-42 and is guided out of the way of the'head sheave frame on a guide sheave 85 mounted on a shaft 86 that is supported by the upright fr ame below the shaft 46, the cable extending thence through the reach-arm in Contact with the under portion of the roller 71- and thence about the guide slieaveI 69 and is connected to the eye 78 on the rear end of the eXcavating implement, so that the implement may bel dragged backV on its bottom and not Y be lifted from the ground, vthe implement .therefore being prevented from turning oveiand requiringan attendant to right it. The cable 84 is wound upon the winding drum of the engine when returning the` dumping bucket into the trench and is unwoundwhen the bucket is moving forward. Preferably a trestle of considerable length is employed and when desired it preferably comprises a suitable number'of the track rails 9 and9respectively.

A `rewhen theftrestle is horizontal, and the bolts bents, each comprising a horizontal beam or cap 87 to which two legs 88 and 89 are secured and braced by suitable means, the legsbeing provided with flange wheels 90 and 90 respectively that-are mounted on Two track rails 91 and92 are mounted upon the plurality of bents and secured to the cap beams by means of angle irons 93 and 93 respectively,'the track rails 'being secured to the intermediate posts 17 and 127 respectively upon the transverse beam 21, the rails being secured also to the guide bars 22 and 22 respectively.l .Thus a unitary structure is formed offthe engine car and the trestle. The portions of the track railsr that reach from the upright frame of the engine c ar to the nearest one 'of the bents have reinforcing bars 94`and 94 securedV to the outer sides thereof. A suitable numb er of cross bars 95 are secured to the under sides of the'track rails 91and192 andeX- tend outwardly lbeyond them, and twov armsV Y soas toprovide for variation of the effective .length of the braceswhen'the trestle is used on. an inclination. Each braceis secured to the trestle leg bymeans of Va boltv 100,V the leg vhaving a suitable number of bolt holes 101, 102 and 103 therein toreceive the bolt. YThe braces are connected f to the bars 95 by means of bolts 10.4, 104',- the braces having a suitable number of holes 105, 106 to receive the bolts which are-inserted in the intermediate ones of the holes 100 `are inserted in the intermediate holes in. the-trestle legs when thelatter are vertical. Various adjustments may be made as illustrated inI Fig. 12 for inclinations of the track rails of the trestle, the trestle legs remaining vertical so as tofdirectly support the loads on the trestle.

. vA suitable tail block 107is Ymounted'on the end portion of the trestle and supports a tail sheave" 108. A .dumping conveying car preferably employedcomprises amain frame 109 provided with flange wheels 110,

110` that are mounted on Vthe track rails 91 and 92, andthe forward end of the frame is provided with a horizontal transversely arranged roller 111, the rear end of the frame preferably having a relatively hig'h'portion'l 112. The main frame is provided'near'its middle portion with a shaft 113Y on which dumpingYA body frame* 114 is. tiltingly." 'u mountedso that the rear portion thereof to'- extending end bar 115.

'ward the tail block is somewhat heavier than the forward portion, and the rear portion preferably is provided with a laterally The car body has a at main portion extending forward of its pivotal shaft, and a back 117 that is inclined. A weight 118 preferably is placed behind 'the back for counterbalancing the body of the car. A load on'the forward portion of Vthe car Vbody causes the latter to tilt and charge its load. After the hooks are moved to permit the dumping, in case the load is not so placed as to cause tilting of the car body by force of gravity, the car mayinove farther until the end bar 115 rides on the inclined bars 123, 123 causes tilting of the body. A cable 12/1L is wound a number of times about the driving wheel 63 and eX- tends upward and over a guide sheave 125 that is mounted on the shaft 81, the cable extending thence about the tail sheave 10S, the end portion 126 of the cable being connected to the rear end of the main frame 109 of the car. The cable extends also downward from the driving wheel and under a guide sheave 12'?r that is mounted on the shaft 86 and thence to the forward end of the car, the remaining` end 128 of the cable being connected to the car at one corner thereof.

Preferably a chute 129 is provided to receive the earth and convey it to one side of the trench, especially when beginning the eX- cavation, the chute having a telescoping receivingportion 130 that may be moved over to receive the earth from the excavating bucket, or may be slipped to one side of the track to permit the conveying car to advance and receive the loads.

It should be understood that various modifications inV structure may be made, it being desirable at times to omit the trestle and operate the conveying car on the level of the ground track.

In practical use the reach-arm rests upon the ground surface Vwhen beginning an eX- cavation and as the trench is deepened the reach-arm automatically descends and remains on the bottom of the trench and per-` mits the drag bucket to be worked under it advantageously. The hoisting engine is controlled in a well-known manner so as to wind up the cable 82 which draws the drag bucket up through the reach-arm and brings the bail 7 5 in contact with the shoulders 33 of the head sheave frame, the latter being adjusted to a suitable position, somewhat as indicated by dotted lines in Fig. 5. As the bucket ascends to be dumped the bail actuates the arm 36 to release the dogs and the frame is carried upward by the bail and holds the bail in proper position for dumping as in Fig. 5. When the bucket is in proper position for dumping, the conveying car is moved forward so that its roller 111 is brought into contact with and prevents the car frame from having injurious Contact with the return cable Sil, the cable being deflected directly by the roller, as shown in Fig. 5 so as to cause the bucket to tilt and discharge its load onto the conveying car, after which the car is run out to the proper position for discharging the load into the trench, the dumping being accomplished as herein-before described. The drag bucket is returned to the trench by the cable 84C and when the bucket descends it will be understood that the head sheave 32 also descends until stopped by the cable 82 which assumes an angular position, the dogs 35 automatically acting to latch the frame of the sheave in the desired normal position for guiding the cable when operating the excavating implement. lt will be observed by reference to Fig. 1 that in case of necessity the sewer braces 7 may be applied early in the operations and not interfere with the operation of the scraping implement, it being permissible to place the braces above the reach-arm.

The improved adjustable trestle herein described forms the subject-matter of divisional application for Letters Patent, iiled November 20, 1913, Serial Number 802,074.

Having thus described the invention, what is claimed as new is- 1. Excavating apparatus including a movable structure, a guide sheave mounted on a relatively high portion of the struc ture, a head sheave provided with a relatively low adjustable support, an excavating bucket, and a hoisting cable connected to the bucket and extending over the guide sheave and under the head sheave and enabling the bucket when hoisted to adjust the head sheave.

2. Excavating apparatus including a movable structure, a guide sheave mounted on a relatively high portion of the structure, a reach-arm hinged to the structure and eX- tending thereunder forv sliding support, a tail sheave mounted on the reach-arm, an excavating bucket to operate under the reaclrarin, a hoisting cable extending over Jthe guide sheave and connected tothe bucket for hoisting the bucket from under the reacharm, and a return cable extending about the a tail sheave mounted on the reach-arm, a*

bucket, a hoisting cable extending over the guide sheave and connected to the bucket, and acable connected to the bucket and extending about the tail sheave.

4. Excavating and conveying apparatus including a winding engine,a trestle, an excavating bucket, cables connected with the engine and the bucket, a tail sheave movably supported under the t'restleV to be raised or automatically lowered and guiding one of the cables for returning the bucket under the trestle, the remaining cable acting to draw the bucket Jfrom beneath the trestle, Y

and an adjustable guide sheave for the remaining cable controlled by the bucket.

5. Excavating apparatus including a movable structure comprising an openwork supporting portion, and also an upwardly-extending frame having la head sheave frame a movably mounted thereon, the supporting portion having a tail sheave mountedtherein to move downward below and also with the supporting portion, a` guide sheave mounted upon the frame, ahead sheave mounted on the head sheave frame, a cable extending over the guide sheave and under the head sheave, a bucket 'connected to the cable, the bucket controllingthe head sheave frame, and a cable extending about the tail sheave and connected tothe bucket.

6. Excavating apparatus including a movable structure, cable-operating means on the structure, a guide sheave supported `relatively high on the structure, an excavating implement, a guide roller and also a tail sheave operatively supported by the lower portions of the structure, the tail sheave being arranged farther than the roller from the cable-operating means, a hoisting cable connected with the cable-operating means and the implement and. extending over the guide sheave, the cable and the implement passing under the guide roller, and a return cable connected to the implement and extending about the tail sheave and under the guide roller. Y

7 Excavating and conveying apparatus including an engine car, an open trestle connected to the car, an open reach-arm hinged to the car and extending adjustably under the 4trestle, an excavating bucket to operate under and through and by the guidance of the reach-arm, means coperating withithe engine car for hoisting the bucket up through the reach-arm and the trestle, and adjustable guiding means on the car for the hoisting means controlled by the bucket.

8. Excavating and conveying apparatus including a movable structure, an openreach-arm hinged to the structure and. extending thereunder for sliding support, an

excavating bucket to operate under and by the guidance of the reach-arm, a. controllable l guide adjustably mounted on the structure,

and means coperating with the structure and the guide for hoistingthe bucket up through `the reach-arm to discharge its-load, thebucket controlling the guide.

9. Excavating and conveying apparatus including a. winding engine, a trestle, an excavating bucket, an open hinged reach-arm provided with a supporting runner and extending under the trestle, a-tail sheavev mounted on the reach-arm, a hoistingicable means for Vguiding the cable to hoist the bucket through the reach-arm, and a return cable connected with the engine and the bucket and extending about the tail sheave.

10'. Excavatingv apparatus including an connected with the engine and the bucket,

engine car, a winding engine on the car, an

open reach-arm hinged to and extending from the car, a tail sheave supported by the reach-arm,a rollerl mounted inthe open reach-arm, and'v two cables connected with the engine and extending through the reacharm in Contact with-the roller, one of the cables extending about the tail'sheave, and

an excavating .bucket connected to the cables to 'be hoisted through the reach-arm by the other one ofV the cables. Y

ll. Excavating apparatus including van los engine car provided withvertical guides, a

guide sheave supported by the guides,-`a

c rame'niovably guided by the guides and having a head sheave thereon, a winding engine on the engine, car, a supported tail sheave, a drag bucket, a hoisting cable connected with the winding engine and to the forward end of the bucket, the cable extending over Vthe 'guide sheave and under the headslieave, and a reversing cable connected also with the engine and the rear end of the bucket vand extending about the tail sheave.

12. Excavating apparatus including a structure nicvably supported on the ground,

a winding engine on the. structure, an open reach-arm'hinged-to the structure and ex` tending to the ground for support, thev reach-arm being provided-with a runner to slide on the ground, a tail sheave supported on the reach-arm, an excavating bucket to operate under the reach-arm, a hoisting cable connected with the engine and the bucket :torhoisting the bucket through the reach-arm, and a return cable connected also with the engine and the bucket and extending about the tail sheave.

13. Excavating apparatus including an engine car, a sheave frame connected to the car to move upward or downward, a guide sheave mounted on the car above the sheave frame, a head sheave mounted on the sheave frame, latching means for temporarily holding the sheave frame in lowered position, an excavating` bucket, a bail connected to the bucket, a winding engine on the car, and a hoisting` cable connected with the engine and extending over the guide sheave and under the head' sheave and connected to the bail forhoisting the bucket, the bucket on being hoisted automatically releasing the latching means and hoisting the sheave frame ahead of the bucket. Y

14. Excavating apparatus including an engine car provided with a head sheave and also a tail sheave that are adjustably mounted thereon to descend by gravity, a winding engine mounted on the engine car, a drag bucket, a guide sheave mounted on the engine car at a greater height than the head sheave, a hoisting cable connected with the engine and the forward end of the bucket and extending over the guide sheave and under and in contact with the head sheave, the bucket operating to elevate the head sheave, and a reversing cable connected also with the engine and the rear end of the bucket and extending about the tail sheave.

15. Excavating and conveying apparatus includino' a structure having an upright guide, a sheave frame movably guided by the guide and adapted for engagement of a bail therewith to prevent shifting of the bail relative thereto, a head sheave mounted on the frame, a guide sheave supported by the upper portion of the structure, a drag bucket, a bail pivoted to the bucket, a winding engine, a hoisting cable connected with the engine and extending over the guide sheave and under the head sheave, the cable being connected to the bail for hoisting the bucket` the bai-l being movable into contact with the sheave frame for preventing rotation of the bucket and for moving the frame upward to clear the bucket, a return cable connected with the engine and also with the rear end of the bucket, means for guiding the return cable, a conveying car movably supported and having a roller thereon presented toward the return cable when the cable is carried up with the bucket, and means for forcibly moving the conveying car and causing the roller to flex the cable for tilting the bucket in the bail to discharge the load from the bucket onto the car. i

16. Excavating and conveying apparatus includingan engine car having two upright guides, a guide sheave supported by the upper portion of the guides, a sheave frame movably guided by the two guides and having shoulders, a head sheave mounted on the frame, a drag bucket, a bail pivoted to the bucket, a winding engine on the engine car, a hoisting cable connected with the engine and extending over the guide sheave and under the head sheave, the cable being connected to the bail for hoisting the bucket, the bail being movable into contact with the shoulders of the sheave frame for moving it upward to guide the bucket, track rails supported on a plane below the hoisted position of the bucket, a return cable connected with the engine and also with the rear end of the bucket, means for guiding the return cable, a conveying car on the track rails and movable to thereturn cable, and means' for forcibly moving the conveying car to flex the return cable for tilting the bucket in the bail to discharge the load from the bucket onto the conveying'car.

17. ln excavating apparatus, the combination of an engine car comprising an upright frame, two guide bars mounted uprightly on the' car and connected to the frame, a guide sheave supported by the guide bars, a sheave frame having two slides movably mounted in the two guide bars, a head sheave mounted on the sheave frame, a hoisting cable extending over the guide sheave and down and under the head sheave, and an excavating implement connected to the cable and movable thereby into contact with the sheave frame for elevating the head sheave.

18. In excavating apparatus, the combination of an engine car comprising an upright frame, two guide bars mounted upriglitly on the car and connected to the frame, a guide sheave supported by the guide bars, two track rails secured to the upright frame and extending past the outer sides 'of the guide bars, a hoisting cable extending over the guide sheave, a car movable on the rails toward or from the guide bars, means for operating thecable, an excavating implement connected to the cable, a sheave frame mounted on the guide bars to ascend or descend between the two track rails, means for vtemporarily latching the sheave frame in lowered position, andahead sheave carried on the sheave frame and guiding the cable between the twotrack rails.

19. The combination of a structure adapted for forward movement, a reach-arm hinged to the structure and extending rearward and downward under the structure, the end of the reach-arm being adapted for sliding support at various depths below the plane of the bottom of the structure, a tail sheave mountedon the reach-arm under the structure, a drag bucket adapted for operation under the reach-arm, a winding engine mounted on the structure, a cable connected with the engine and the forward end of thevbucket for drawing the latter out from under the reach-arm, and acable connected with the engine and extending over the tail sheave and `thence under the sheave and the reach-arm and to the rear end of the bucket and connected thereto.

20. In excavating apparatus, the combi nation with an engine car, and two cables guided on the car, of an excavating imple-V ment connected to the two cables, a reacharm comprising ,two bars pivotally connected to the engine car, two runners secured to and supporting the free endsof the two bars, a roller supported between the two. bars and guiding the cables, and a'tail sheave mounted on the ends of the bars and guiding'one of the cables. Y

21. In-'excavating and conveying apparatus, the combination with two track rails, an upright frame, a guide sheave mounted upon the frame, and an excavating bucket, of a conveying car movablevon the track rails and having a roller on the forward end thereof, a hoisting cable extending over theV guide sheave and connected to the bucket for hoisting the bucket towardthe sheave, a return cable connected 'to the bucket and carried to suspended position by the hoisted bucket, means for guiding the return cable, and a cable connected tothe conveying car to forcibly draw the roller against and iiex the return cable for tilting the bucket. f

V22. In excavating apparatus, the combi.

nation with a frame structure, cable-operating means on the structure, a guide sheave v supported relatively high on the structure, a tail sheave adjustably supported under the structure, and an excavating'bucket, of a head ysheave frame adjustably mounted von the structure, a head sheave mounted on the ratus, the combination with two surfacek rails, an engine car, and a trestle comprising bents movable on the rails, of a reach-arm pivotally connected to the engine car and extending away and downward at an inclination under the trestle bents and movable pivotally to extend below` the plane of the rails, means independent of the engine carv for supporting the end of the reach-arm, a hoisting cable, an excavating bucket connected to the cable to be'drawn thereby upward from beneath the reach-arm, a return cable connected to the bucket for drawing the bucket under and toward the end of the vreach-arm and theV roller reach-arm, and a tail sheave mountedon the far end of the reach-'arm and guiding the return cable. l Y

24. In hoisting apparatus, the combination with aframe structure, cable-operating means on the structure, a guide sheave supported relatively high on the structure, and an excavating bucket, of a relatively long reach-arm" hinged relatively low on the structurel and having a guide roller there-VV 25. In hoisting apparatus, the combina-f tion with a frame having a cable guide, cable-operating means, and an excavating bucket, of a reach-arm hinged to and extending downward at an inclination under the frame, a tail sheave mounted on the end f portion of the reach-arm, a guide roller connectedwith the reach-arm between the support of the reach-arm and the tail sheave, a )return cable extending 4about the Atail sheave and connectedwith the bucket, and a hoisting cable connected with the bucket and the cable-operating means and guided by the cable guide to-be guided by said roller for drawing the bucket under Y the Y and ythence up` ward. l l y 26. In hoisting apparatus, the combination with a frame structure, cable-operating means on the structure,'a guide sheave supported relatively high on the structure, a

tail sheave having a carrying Vframe adjust'- ably supported at a distance from and rela` tively, lower than the guidev sheave, the frame extending from its support downwardly, anda bucket, of a return cable ex` tending about the tail sheave to be variably guided thereby an'd connected with the bucket, a movable frame guided on the structure, a'head sheave mounted on the movableframe, and a hoisting cable connected with the cable-operating means and theY bucket and extending over the guide sheave, the hoisting cable extending under and in contact with the head sheave and inY nation withv two surface rails, two stands of lsheathing in 'planes between the rails, a

brace horizontally arranged betweenthetwo stands of sheathing, and astru'cture mov-V able on the rails above the sheathing, of a reach-arm pivotally connected to the structure and extending thereunder and also under the brace for sliding support between the two stands of sheathing, a tail sheave mounted on ther reach-arm, a winding engine on the structure, a drag bucket, a return cable connected with the engine and extending about the tail sheave, the cable being connected to the rear end of the bucket for drawing the bucket under the reacharm, and a hoisting cable connected with the engine and the forward end of the bucket for drawing the bucket forward under and also out from under the reach-arm.

28. :in hoisting apparatus, the combination with a traine structure, cable-operating means on the structure, a guide sheave supported on the upper portion of the structure, a tail sheave supported at a distancer from and variably relatively lower than the guide sheave, and an excavating bucket, of a return cable extending about the tail sheave to be variably guided thereby and connected with the bucket, a sheave frame slidingly guided vertically to move up or down on the structure, a head sheave mounted on the sheave fra-me, and a hoisting cable connected with the cable-operating means and the bucket and extending over the guide sheave and under and in contact with the head sheave to hoist the sheave frame with the bucket.

29. In Vhoisting apparatus, the combination with a frame structure, cable-operating means on the structure, and a bucket, of a hoisting cable connected with the cable-operating means and the bucket, means on the structure for guiding the cable to hoist the bucket, a return cable connected to the bucket and carried upward by the hoisted bucket, a guide for the return cable, means for operating and controlling the return cable, and means for flexing the upper portion of the return cable to tilt the hoisted bucket.

30, In excavating and conveying apparatus, the combination of a frame structure, cable-operating means, an excavating dumping bucket, a hoisting cable connected with the cable-operating means and the bucket,

means on the structure for guiding the cable to draw and hoist the bucket, a return cable connected with the bucket and carried upward by the hoisted bucket, a guide Jfor the return cable, means for operating and controllingthe return cable, a car movable on the structure to the return cable under the hoisted bucket, and means enabling the car to force the carried-up portion oit' the return cable and deiect the same 'or dumping the load of the bucket onto the car.

31. In excavating and conveying apparatus, the combination of a frame structure, cable-operating means, an excavating dumping bucket, a hoisting cable connected with the cable-operating means and the bucket, means on the structure for guiding the cable to draw and hoist the bucket, a return cable connected with the bucket and carried upward by the hoisted bucket, a tail sheave supported for vertical adjustment under the structure and guiding the return cable, means for operating and controlling the return cable, and means cooperating with the structure and acting on the hoisted bucket for dumping a load from the bucket.

32. In excavating apparatus, the combination of an engine car, two upright guides supported by the engine car, a head sheave trame movably guided by the guides and carrying a head sheave, a hoisting engine on the engine car, a drag bucket, a guide sheave mounted on the upper portion of the engine car, a hoisting cable operatively connected with the hoisting engine and the bucket and extending over the guide sheave and under the head sheave, a supported tail sheave, a reversing cable operatively connected with the hoisting engine and the bucket and extending about the tail sheave, and a guide mounted on the engine car on one side of the two upright guides and guiding the reversing cable over laterally to clear the upright guides and the head sheave frame.

33. n excavating and conveying apparatus, the combination of an engine car comprising a platform and an upright frame, two track rails connected to the upright frame and extending therefrom, two upright guides between the two track rails and connected to the lower and upper portions of said upright frame, a head sheave frame movably guided by the guide bars and carrying ahead sheave, a hoisting engine on said platform, a drag bucket, a guide sheave mounted on said upright frame above said head sheave frame, a hoisting cable operatively connected with said engine and said bucket and extendingover said guide sheave and also under the head sheave, a conveying car movable on the track rails to or from the upright guides, a tail sheave supported above the track rails, a controlling cable extending from said upright frame about said tail sheave and being connected to the conveying car, said controlling cable extending also from said upright frame and being connected to one corner of said conveying car, a winding drum on said engine car for operating said controlling cable, and means mounted on said upright frame guiding` said controlling cable over laterally to one side of said upright guides to clear the path of said head sheave frame and said bucket.

34E. In excavating and conveying apparatus, the combination of an upright frame having vertical guides, a drag bucket and a conveyingcar operative on one side oi' the frame and movable toward or from the guides, a hoisting cable guided on the upper portion of the :trame and connected to the bucket for hoisting the bucket adjacent to the guides, a frame movably guided by the guides and lcarrying a sheave for guiding sheave for guiding the returning cable, a

controlling cable connected to opposite ends of the conveying car and also with said drum, a tail sheave for guiding the controlling cable, and a series of means mounted on the upright frame Jfor guiding the returning cable and the controlling cable about one side of the upright guidesand the path of the bucket.

35. In excavating and conveying apparatus, the combination of an upright frame, two guide bars vertically supported by the frame, a guide sheave mounted on the upper portion ofthe frame, lsupported hoisting means, a head sheave frame movably guided by the two guide bars and carrying y a head sheave, a hoisting cable connected tothe hoisting means and extending over the guide sheave and under the head sheave, a drag bucket connected to the cable'to be hoisted thereby, the bucket on being hoisted engaging and hoisting the head sheave frame, and movable latching means constructed to coperate with said upright frame and said head sheave frame'for latch-v ing the head sheave frame in lowered position, said latching means being engaged by said bucket on being hoisted for releasing said head sheave frame. v

In testimony whereof, I aiiix my signature in presencev of two witnesses.

JosEPH L. Porrnn.V

Y Witnesses:

lE. T. SILVIUS, K

J. H. Gremium.V

Copies of this patent may be obtained for ve cents each, by addressing the ivUommissioner of Patents.

Washington, D. G. Y

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