US716741A - Excavating-machine. - Google Patents

Description

No. 716,741. Patented Dec. 23, I902.

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EXGAVATING MACHINE.

(Application flied mm. 22. 1002.)

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(No Model.)

W/TNESSES V m VENTOH CZarZgr 6.1795 7%? No. 7:6,74i. Patented Dec. 23, I902. c. c. mamas. EXCAVATING MACHINE.

(Application filed Jan. 22, 1902.

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'a r r 'EXCAVATlNG-MACHlNE.

SPEGIFIGATION formingpart of Letters Patent No. 716,741, dated December 23, 1902. Application filed January 22, 1902. Serial No. 90,782. (1% model.)

To aZZ whom L27 may concern:

Be it known that I, CHARLES Cnsssn'r Mo- BRIDE, a citizen'oftheUnited States, and a resident of Bedding, in the county of Shasta and State of California, have invented new and useful Improvements in Excavating-Machines, of which thefollowing isa full, clear, and exact description.

My invention relates to improvements in excavating-machines which may be used to good advantage in many diiferent kinds of worksuch, for instance, as railway-grading and cutting through banks, for narrow and deep cuts where many cumbrous machines are unavailable, for mining work, and in any and all places where excavation of a bank of opposing material is necessary.

One object of the invention is to provide a traveling shovel-carrier which may be adjusted to secure a pullin straight or inclined directions .on the shovel, and, furthermore,

to enable the parts of the shovel-support to work independently of each other under certain conditions, so that the sweep of the shovel through the bank of material may be increased during the operation of raising the shovel, whereby the shovel may be fully loaded.-

Further objects of the invention are to provide a hinged shovel on a depending part of the shovel-carrier, thus allowing the shovel to be raised to an inclined'dumping posi tion and obviating the use of a horizontallyswinging boom, to provide means for adjusting the operating mechanisms crosswise of the cut or excavation, or, in other words, in a direction substantially parallel to the face of the out, to look or hold the several parts securely in place when desired, and to enable the apparatus to be folded together for transportation or storage.

With these ends in view the invention consists in the novel combinations of mechanisms and in the construction and arrangement of the various parts, as will be hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of my improved excavating apparatus, illustrating the same in working position at a bank of material. Fig. 2 is a vertical transverse sectional elevation taken in the plane indicated by the dotted line 2 2 in Fig. 1. Fig. 3 is an enlarged plan view of the adjusting mechanism for the traveling shovel-carrier. Fig. 4 is an enlarged view, in side elevation and with parts in section, showing a part of the verticallyadjustable boom, the trolleys forming the members of the complete traveling shovelcarrier, and the cables whereby said trolleys may be adj usted, independently or the shovelcarrier as an entirety may be made to travel along the boom. Fig. 5 is a transverse detail section in the plane indicated by the dotted line 5 5 in Fig. 4. Fig. 6 is an enlarged plan View of the shovel, which is hung on a horizontal axis andis adapted to be raised to a carrying and dumping position; and Fig. 7 is a cross'section of the shovel, taken in the plane indicated by the dotted line 7 Tim Fig. 6.

To support the several operating mechanisms in a raised position above the bottom of the out or excavation, I employ a carryingframe, which is indicated in its entirety by the reference-letter A, said frame consisting of the bents 5, having tie-rails 6 7. This carrying-frame is provided with the girders or stringers 8 8", which are disposed in horizontal positions across the upper ends of the boots and are adapted to extend crosswise of the cut or excavation, said girders or stringers serving as rails forthe support of the shiftable bed-frame which carries the mast, the boom, and the operating devices, presently described. The carrying-fram e,when the machine is adj nsted in operative position within a cut and adjacent to the face of the material which it is desired to excise, is intended to be anchored firmly and secured in place by any suitable means-such, for example, as by a series of guy-ropes, one of which is indicated at 10 in Fig. l; but to facilitate the transpor tation of the apparatus said carrying-frame is preferably equipped with the wheels or rollers 11, the same being mounted on suitable axles 12, that are attached to the bottom bars 13, which in turn are bolted to the bents 5,whereby the framework is rendered port-able in order that it may be advanced along the bottom of the cut, so as to properly position the excavating-shovel with relation to the face of the bank, according to the progress of the work of excavation.

14 designates the shiftable feed frame, which may be constructed of timbers formed together in any substantial way. This bedframe is arranged in a horizontal position to extend across the stringers or rails 8 8 said bed-frame being provided with suitable carrying wheels or rollers, which are indicated at 15 in Figs. 1 and 2, whereby the bed-frame may be shifted or moved along the tracks afforded by the stringers. This bed-frame 14 supports or carries a vertical mast 16, on which is mounted a boom 17, said boom being connected bya horizontal bolt 18 to the mast in a manner to permit the boom to swing in a vertical plane on the horizontal axis afforded by said bolt. The mast 16 is mounted or stepped on the shiftable bed-frame 14 in a manner to facilitate the setting up or taking down of the parts; but this mast is anchored in a substantial way to the bed-frame 14, so that it cannot swing or turn on a vertical axis, thus limiting the boom 17 toa swinging adjustment in a vertical plane instead of permitting the boom to swing in a horizontal plane with a swiveled mast, as is common in the construction of derricks or other power appliances. Any suitable means for stepping the mast on the bed-frame 14 may be adopted. In Fig. 2 of the drawings '1 have shown the bed-frame as provided with a heavy metallic plate 19, which is preferably hinged at 20 to the bed-frame and has its free end confined by a latch 21. This heavy metallic plate 19, which may be termed a foot or step plate, is provided with an upstanding pintle or bolt 22, the same being shown by dotted lines in Fig. 2, and adapted to enter a socket or cavity in the lower extremity of the mast. The mast is erected in a vertical position at or about the center of the bed-frame, and to the upper portion of said mast are attached a series of guy ropes or cables 23, which have their lower ends fastened to the bed-frame, preferably at the corners thereof, whereby the mast is stayed in place, and it is carried or adjusted with said bed-frame.

A cable 24 is attached in any suitable way, as at 24*, to the outer or free end of the pivoted boom 17, said cable extending above the boom and over a sheave or guide-roller 25, mounted at the head of the mast. The cable then extends in a downward direction to and is coiled upon a boom-Windlass 26, the shaft of which is mounted on a suitable supportingframe 27, erected upon the bed-frame 14 ata point adjacent to the mast 10, said Windlass 26 being provided with a suitable operatingcrank 26 and adapted to be locked or fastened in place against rotation by, any suitable form of detent mechanism-such, for example, as the pawl and ratchet indicated generally in Fig. 1. The Windlass 26 may be operated to take up the cable 24, and thereby raise the boom to a horizontal or inclined position, or the Windlass may be rotated in an opposite direction, so as to pay out the cable, and thereby lower the boom to a downwardly and forwardly inclined position over the bank of material. The boom, however, normally occupies the horizontal position substantially as indicated by Fig. 1, in order that the traveling shovel-carrier and the shovel may travel in horizontal paths; but the described means for adjusting the boom allows it to be brought to a position parallel with the bottom of the cut or excavation.

It is evident that the slidable movement of the bed-frame 14 on the track afforded by the stringers 8 8 takes place at intervals and that the bed-frame and the boom carried thereby should be heldin stationary positions when the shovel is operated to cut down the bank and to discharge the excised material into the cars or carts. The supporting-frame 5 carries the guide-rails 28, which are secured firmly to the cross-rails 7 of the bents and are arranged in horizontal positions between and parallel to the track-rails afforded by the stringers 8 8 said guide-rails being suitably spaced apart, as shown more clearly by Fig. 1. With these guide-rails are adapted to engage the clamps 29 30,which are mounted pivotally at 31 on suitable frame-pieces of the bed-frame 14. Each clamp is shown by Fig. 1 as consisting of cross members pivoted together and adapted to clasp the rail 28, and the upper free ends of the members of each clamp are united together by a coupler 32, the same having a suitable turnbuckle, whereby the members of the clamp may be made to engage firmly with the rail 28. As shown by Fig. 1, I prefer to employ headed and flanged rails similar to ordinary track-rails, because such construction of rails allows the clamps to engage beneath the heads and to prevent the bedframe 14 from lifting off the guide-rails under the weight of the boom and the loaded shovel suspended therefrom. The employment of the series of clamps 29 3O enables the bedframe 14 to be fastened securely upon the carrying-frame A. It is evident, however, that other forms of clamps may be adopted and that other means may be employed for locking the bed-frame in several adjusted positions along the track of the carryingframe.

In Fig. 2 0f the drawings I have shown one embodiment of means for adjusting the bedframe along the track of the supportingframe, said means consisting of a cable 33, which has one strand thereof arranged to extend beneath the shiftable bed-frame and carried around the pulleys or drums 34, which are mounted at opposite ends of the trackrails 8 8", the ends of said cable 33 being attached to opposite ends of the shiftable bedframe 14, as indicated at 33 in Fig. 2. It is evident that either drum may be rotated in one direction for the purpose of hauling on the cable and moving the bed-frame 14 in one direction: but a reverse movement of the cable causes the bed-frame to move in an opposite direction.

I will now proceed to describe the traveling shovel-carrier, which is mounted upon or on the boom 17 to move lengthwise. Under some circumstances a single trolley may be adopted as a traveling shovel-carrier; but I prefer to employ a shovel-carrier which consists of two members or trolleys, which are indicated by the reference-letters B O in Fig. 4, said members or trolleys having operative relation one to the other and adapted under some circumstances to work simultaneously and under other circumstances to operate -in dependently of each other. The member or trolley B is provided with a suitable framework 35, arranged to straddle the boom 17, said framework carrying a plurality of wheels or rollers 36, that restupon and travel along said boom 17. The trolley or carriage member B is arranged between the mast 16 and the other member or trolley C, and in order to distinguish one member or trolley from the other I may sometimes refer to the trolleyB as the shovel-trolley, while the trolley or carriage member will sometimes be designated as the hoisting-cable trolley. The shoveltrolley or carriage member B is provided with a shovel-hanger 37, consisting of suitable bars or framework united substantially to the frame 35 of the trolley and preferably braced by the cross-strap 38.

The hoisting-cable trolley or carriage member O is provided with a frame (indicated at 39) and with a plurality of carrying rollers or wheels 40, that are adapted to travel upon the boom, and thistrolley or carriage memher is furthermore provided at its front up.

per corner with aguide roller or sheave 41,

over which is adapted to pass the hoistingcable, {indicated at 42.) The hoisting-cable trolley or carriage member G is operatively related to the other carriage member B through the employment of an extension or coupling bar D, the same consisting of a suitable bar or rod of metal of any desired shape in crosssection and attached solidly to the frame 39 of the carriage member 0 and slidably fitted to or within anopening 47, which is provided in the framework 35 of the carriage member B. (See Fig. 5.) This extension or coupling bar is adapted to extend through and beyond the carriage member B, and to the rear end of said extension-bar is attached one end of an endless opperatlug-cable 43 for the carriage member C,

said point of attachment being indicated at 43 in Fig. 4. This strand of the cable 43 leads over a guide-sheave 44, thence downward to and around a Windlass 45, thence upward to and over another guide-sheave 46, mounted on the boom, and thence alongsaid boom through suitable openings 47 in the frame of the carriage members 13 G, thence around a guide-sheave 48, attached to the outer end of the boom, and finally back to the frame 39 of the carriage member-C, where it is secured, as indicated at 43 in Fig. 4.

It will be noted that the cable 43 has one end attached to the front side of the carriage member 0 at 43", while the other end of the same cable is attached at 43 to the extension or coupling bar D, projecting from the rear side of the carriage member, whereby said last-named end of the cable is, in efiect, connected to the opposite side of the carriage member at 43* from the end 43 of the same cable. The cable is wound at a point intermediate of its length around the Windlass or drum 45, so as to be engaged frictionally therewith, and the rotation of this Windlass in one direction operates to move the carriage member 0 along the boom and toward the free end thereof, while the reverse rotation of the same windlass'pulls on the cable to move the carriage member Gin an opposite direction or toward the mast.

Any suitable means may be employed in lieu of the cable and Windlass for the operation of the carriage member C, and a similar operating means may be employed for adjusting the carriage member 13 along the boom. This carriage member is adjusted, in the embodiment of the invention shown by the drawings, by a cable 49, which has one end attached to the front side of the carriage member, as at 49*, and its other end is attached to the rear side of the carriage member, as at 49". (See Fig. 4.), The cable 49 leads from the front side or" the carriage memberB through suitable openings in the frame 39 of the carriage member 0, around a guide-sheave 59 supported at the front end of the boom, thence backward through holes in the frames 3539 of the two carriage members, thence over another guidesheave 51 near the inner end of the boom, thence in a downward direction to and around a Windlass or drum 52, thence in an upward path to and over another guidesheave 53, supported on the boom adjacent to the sheave 51, and is finally connected at 49 at the rear side of the carriage-frame. This endless cable 49 is coiled or wound in frictional engagement upon the Windlass 52, so that the rotation of said Windlass in one direction or the other will operate the cable 49 in a manner to move the carriage member along the boom.

The drums or windlasses 45 52 for the operation of the cables 43 49, respectively, form parts of the adjusting mechanisms for the traveling shovel carrier, which adjusting mechanisms are shown in detail by Fig. 3 and in a general way by Fig. 1. Said drums or windlasses are mounted on shafts 45 52, that are suitably. journaled in a framework 54, the same being fastened upon the shiftable bedframe 14. Suitable means for the operation of these drums, either individually or collectively, are supported by the framework 54, and in one embodiment of'the invention the dru m -operating.mechanism is in the form of a crank-shaft 55, the same being journaled in bearings of the framework and between the drums. This shaft has a hand-crank 56 and a spur-gear pinion 57, and with this pinion may intermesh the gear-wheels 58 59. As shown by Fig. 3, the gear-pinion 57 is n0nslidable on the crank-shaft 55; but, if desired, this pinion may be adjusted so as to have intermeshing engagement with either or both of the gears 58 59. As represented, however, the gears 58 59 are keyed on the shafts 4'5 52, respectively, in order that they may be individually adjusted in. the positions where they may mesh with the pinion 57, thus making provision for the separate or joint operation of the drums 45 52. With the shaft 45 of the drum that controls the cable 43 for the carriage member 0 is associated a brake mechanism, which is adapted to hold the drum or Windlass in a locked or non-revoluble condition at certain times. Said brake mechanism may be of any approved or suitable construction; but as shown by Figs. 1 and 3 this brake is in a form of a disk 60, which is made fast with the drum-shaft 45 and an eXpansible band 61, which circumferentially embraces the disk, said band being controlled manually by a suitable lever or treadle 62, which is indicated in Fig. 1.

I will now proceed to describe the shovel and the parts associated therewith. The shovel is indicated in its entirety by the reference-letter E, and it consists of a rear plate 6 and a bottom plate 0, joined by the side plates e and provided at the front edge of the bottom with the pick-points 6 This shovel is bolted or otherwise secured firmly to a suitable shovel-frame, which consists of a series of bars 63 64, said bars 63 converging toward their upper ends and extending for a suitable distance above the rear plate 6 of the shovel. The bars 63 64 of the shovel-frame are fitted between the members 37 of the shovel-hanger, and this frame and the hanger are pivoted together by means of a horizontal bolt or rod 65, the same constituting the horizontal axis on which the shovel is adapted to turn when it is raised or lowered.

Between the upper edge of the shovel and the top of the shovel-frame is arranged a discharge-chute, (indicated in its entirety by the reference-letter F.) This chute consists of the back plate f, having the fiangesf, the side plates f and the extension members f. I prefer to place the back platefof the chute against the shovel-frame, which is formed by the bars 63 64, and this back plate is arranged approximately inthe plane of the rear plate e of the shovel. The plate of the chute overlaps the plate 6 of the shovel, as indicated by dotted lines in Fig. 6, and the two plates are connected pivotally together, as by the bolt 66, whereby the platefof the chute may be adjusted edgewise with relation to the scoop. The side members f of the chute are disposed in the converging relation shown by Fig. 6, and they are hinged or pivotally connected, as at 67, to the side flanges e of the shovel.

These side members of the chute lie between the flanges f of the plate fof the chute, thus holding the hinged side members f in proper relation to the plate and making said hinged members adjustable with the plate when the latter is turned on the bolt 66.

The extension membersf of the chute are hinged, as at 68, to the side members f and the extension members may be adjusted to the positions shown by Fig. 6, or either extension member may be brought in alined relation to the side member f when the chute is shifted in one direction or the other on the axis afforded by the bolt 66.

The shovel-frame is provided with the wings or extensions 69, which are attached to the bars 63 and are connected together by the cross-brace 70. These wings or extensions afford a support for the laterally-shiftable chute F when it is adjusted in one direction or the other relative to the shovel, and the shovel-frame thus serves as a means for supporting the shovel and the chute, so that the latter will occupy an operative relation at all times to the shovel.

The hoisting-cable 42 is attached to a bail 71, that is connected in any suitable way to the sides of the shovel E, said cable 42 running over the sheave 41 on the member 0 of the carriage, thence extending over and around a sheave 72, which is supported on the mast l6, thence extending downwardly along the mast againsta sheave 73, and finally carried to a suitable operating mechanism. This operating mechanism for the hoistingcable may be of any nature or construction, according to the power which it is desired to employ. I'may avail myself of an electric motor, or of an air-engine, or steam-engine, or of horse-power; but, as shown by Fig. l, the operating means for the hoisting member is in the form of a drum '74. It will be understood, however, that this cable may be connected with a suitable draft appliance for operation by horse-power, and, furthermore, that the means for operating the hoistingcable may be located on the excavating-machine or at a point remote to or distant from said apparatus.

In operation, assuming that the apparatus has been installed in substantially the position shown by Fig. 1, the cables 43 49 are operated by their drums 45 52, so as to advance the shovel-carrier along the boom and carry the shovel to a position adjacent to the face of the bank. The shovel is lowered to a vertical position, as indicated by full lines in Fig. 1, by slackening the strain on the hoistingcable 42, and in order to load the shovel the cable 42 is subjected to strain in a direction to lift the shovel on the axis afforded by the horizontal bolt 65. During the operation of raising the shovel from a vertical to a substantially horizontal position, as indicated in Fig. 1, the pick-teeth e of the shovel and the lip of the shovel are forced through the face of the bank, and simultaneously with this upward swinging movement of the shovel the carriage member B is advanced or moved along the boom toward its outer end for the purpose of increasing the are through which the shovel sweeps. To secure this last-mentioned end, the drum 45 of the cable which adjusts the carriage member 0 is locked in place and against movementby its brake mechanism, so that the carriage member 0 will be held in a stationary position; but at the same time the winchman stationed at the adjusting mechanism for the traveling shovelcarrier operates the crank 56 and rotates the drum 52 through the intermeshing gearing 57 59 for the purpose of moving the cable 49 and giving a traveling movement to the carriage B and to the hanger 37, to which the shovel is hinged. This advancing movement of the carriage member B simultaneously with the elevation of the shovel increases or lengthens the sweep of the shovel, and this operation results in a full load for the shovel at all times. In case the shovel encounters an obstacle, such as a rock, which will stall the team of horses or will prevent the parts from operating, the windlass 52 is reversed by operating the crank 56, and the shovel is backed out of the bank. It will be understood that the Windlass 52 is not controlled by a brake. Assuming that the shovel with the load has reached its horizontal position, (indicated by dotted lines in Fig. 1,) the operator releases the brake on the shaft of the drum 45; but the strain on the hoisting-cable 42 continues, so that the hoisting-trolley or frame member C is forced back by the tension of the cable 42, thus sliding the carriage meniber 0 along the boom until it comes in engagement with the carriage member B, at which time the two carriage members B G and the loaded shovel are carried lengthwise along the boom until the shovel reaches a position above a car or cart that may be moved beneath the carrying-frame A. At this time the operator throws the brake on the shaft of the drum 45 to arrest the rearward travel of the carriage member 0, and this operation causes the shovel to be raised to the inclined or dumping position, (also indicated by the dotted lines in Fig. 1,) whereby the load is discharged from the shovel through the chute F into the car or cart.

The object of adjusting the carriage member 0 independently of the carriage member B is to place the hoisting-cable 42 in a slant ing or upright position between the sheave 41 and the shovel. When a slanting pull from the shovel to the hoisting-trolley is desired, the cable 43 is operated by the drum 45 in a direction to move the carriage member 0 toward the outer end of the boom and away from the carriage member B until the desired result is obtained, after which the bolt (indicated at 75) is dropped or thrown into a hole provided in the extension or coupling arm D beyond the carriage member 13. When the shovel is working close up to a bank and a straighter pull on the cable 42 is desired, the carriage member 0 is moved in a backward direction and toward the carriage member B, after which the extension-arm D is coupled up shorter by the bolt 7 5, said bolt being adapted to fit in either of a series of apertures provided in the extension-bar.

Of course the shovel is returned to its vertical position after discharging the load into the car or cart, and the operation of filling the shovel and dumping the load may be repeated the desired number of times. The entire bed-frame and the means supported thereon may be shifted along the track 8 8 by the means heretofore described. The mast and the boom may be dismounted by slipping the cables 43 49 from their pulleys and unstepping the mast from the plate 19, after which the boom and the mast may be folded downwardly upon the apparatus to place the same in a substantial compact condition suitable for transportation.

The sheave or pulley-block 72 may be adjusted in a vertical direction on the mast 16 by any suitable means, thus making it practicable for the draft-team to pull on a level cable 42 while they are working on the surface of either a high or low bank.

The swinging chute and the shovel sup-- ported by the hinged frame turning on the axis obviates the necessity of a boom which swings in a horizontal plane. My construction makes it possible to work in a deep narrow cut or railroad-tunnel where a shovel working on a swinging boom cannot be operated advantageously.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In an excavating apparatus, the combination of a traveling carriage having a vertical mast, a boom attached to the mast and projecting forwardly beyond the mast and the carriage, said boom adapted to occupy an overhanging relation to the end face of a bank and affording a track-surface, means for supporting and adjusting said carriage and the boom for movement in a path across, and substantially parallel to the end face of a cut or excavation, a shovel-carrier adapted to said track of the boom and arranged to travel toward and from said carriage, a swinging shovel having a hinged connection to the shovel-carrier, and means for operating the shovel-carrier and the shovel individually or collectively.

2. In an excavating apparatus, the combination of atrack adapted to be supported in a position parallel to an end face of a cut or excavation, a carriage mounted on said track and having means for adjusting and looking it to variable predetermined positions, a vertical mast on the carriage, a horizontal boom attached to the mast and extending beyond the carriage so as to occupy overhanging relation to a bank, a shovel-carrier mounted on said boom to travel toward and from the mast,

a swinging shovel hinged to said shovelcarrier, and means for separately or collectively operating the shovel-carrier and the shovel.

3. In an excavating apparatus, the combination of a portable frame having a track disposed substantially parallel to the end face of a cut or excavation and adapted to be advanced toward the same from time to time, a carriage mounted to travel lengthwise of said track, means for locking the carriage at different points along the track, a mast mounted on the carriage, an overhanging boom pro jectingfrom the mast and forming a tracksurface, a shovel-carrier slidable on the boom toward and from the carriage, a hinged shovel suspended from the carrier to travel therewith, and means for adjusting and controlling the shovel-carrier and the shovel.

4. In an excavating apparatus, the combination with a suitable framework, of a carriage mounted thereon for adjustment in a path substantially parallel to the end face of a cut or excavation, a vertical mast mounted on the carriage, an overhanging boom projecting beyond the carriage and affording a horizontal track-surface, a shovel carrier mounted on the track-surface of the boom to travel toward and from the carriage, a shovel suspended from the shovel-carrier and having suitable operating devices, and means for individually adjusting and operating the carriage and the shovel-carrier to move the respective parts in planes at right angles to one another.

5. In an excavating apparatus, a shovelcarrier comprising two parts or members, and means for moving said members collectively or individually, in combination with a shovel suspended from one member of the carrier, and a hoisting mechanism guided by the other member of the carrier.

6. In an excavating apparatus, a traveling shovel-carrier comprising two parts or members, means for individually or collectively operating the same, and means for locking one member in a stationary position, combined with a shovel having operative connections With one member of the carrier, and a hoisting mechanism guided by the other member of the carrier.

7. In an excavating apparatus, the combination witha boom, of a two-part shovel-carrier slidably mounted thereon, means for individually controlling and operating said parts of the shovel-carrier, a suspended sho vel movable with one member of the shovel-carrier, and a hoisting-cable guided by the other member of the shovel-carrier.

8. In an excavating apparatus, the combination with a boom, of a two-part shovel-carrier slidable thereon, means for adjusting the parts of said shovel-carrier individuallyor collectively, a shovel having a hinged connection with one part of said shovel-carrier, a hoisting mechanism connected with another part of the shovel-carrier and attached to the shovel for raising the latter to a dumping and carrying position, and means for moving one part of the shovel-carrier and the shovel connected thereto in a-forward direction during the operation of elevating the shovel.

9. In an excavating apparatus, a shovelcarrier consisting of two members having means for coupling the same in different operative positions, combined with a shovel arranged on one carrier member, and a cable guided by the other carrier member.

10. In an excavating apparatus, a shovelcarrier consisting of two members, and an extension-bar mounted on one member and adapted to be connected with the other member, combined with a shovel connected with one carrier member, and a hoisting-cable for said shovel.

11. In an excavating apparatus, the combination of a boom, two trolleys slidably mounted on the boom, a shovel having a hinged connection with one trolley, a cable connected to the shovel and guided by the other trolley, and means for adjusting the relative position of the cable-guiding trolley to the shovel-trolley, whereby the direction of the hoisting-cable may be changed.

'12. In an excavating apparatus, the combination of a boom, a shovel-support on said boom, a shovel connected to said shovel-support, a hoisting-cable connected to the shovel, a cable-guide shiftable along said boom to variable positions with relation to the shovelsupport, and means for holding said cableguide in fixed positions relative to the traveling shovel-support; said cable-guide and the shovel-support being adjustable individually or collectively.

13. In an excavating apparatus, the combination of a two-part shovel-carrier, a hinged shovel sustained by an active part of the shovel-carrier, a cable-guide on the other part of the shovel-carrier, means for locking the last-named part of the shovel-carrier in variable relation to and during the effective periods of the other active member of said shovel-carrier and the shovel thereon, means for hoisting the shovel, and means for moving the active member of the shovel-carrier simultaneously with the elevation of the shovel.

14.. In an excavating apparatus, a shovelcarrier comprising two parts or members and an intermediate connection or coupling arranged to insure simultaneous movement of the members when the carriage is moved in one direction and when shifted in the opposite direct-ion to allow either member to have a limited independent play or movement, combined with a shovel supported by one member, and means for adjusting the carriage members and the shovel.

15. In an excavating apparatus, the combination of a frame, a shovel carried thereby, and a chute mounted on the frame and maintained thereby normally in alined relation to the shovel, said chute and the shovel being pivotally united and the chute being adjustable to diiierent angular positions relative to the shovel.

16. In an excavating apparatus,the combination with a shovel carrier, of a hinged shovel-frame connected with the carrier, a shovel mounted on the shovel-frame and having the angular lip at its open front end, and a chute supported by the shovel-frame between an open rear end of the shovel and the point of connection of the shovel-frame to the shovel-carrier.

17. In an excavating apparatus, a shovelframe having a shovel, and a chute supported by the shovel-frame in laterally-shiftable relation to an open rear end of the shovel.

18. In an excavating apparatus, the combination With a shovel, of a chute having its back plate pivoted to the shovel.

19. In an excavating apparatus,the combination with'a shovel, ot' a chute having the side members and its back plate adjustable to different angles with relation to the shovel.

20. In an excavating apparatus,the combination with a hinged frame, of a shovel carried thereby, and a chute having a back plate which is adjustable relatively to the shovel and the side members hinged with relation to the shovel.

21. In an excavating apparatus, the combination with a shovel-frame and the shovel carried thereby, of a chute having the side members and the extension members, said extension members being adapted to project beyond the side members.

22. In an excavating apparatus,the combination with a hinged shovel-frame and a shovel thereon, of a chute having a pivoted back plate, the hinged side members and the extension members supported by the side members.

23. In an excavating apparatus,the combination with a suitable framework having a track disposed substantially parallel to an end face of a cut or excavation, a carriage fitted thereto, means for adjusting said carriage along the track,gripping devices mounted on the carriage and engaging With the track to hold the carriage firmly against lifting off the track and at variable points along said track, an overhanging boom on the carriage, and an excavating-shovel suspended from the boom.

24. In an excavating apparatus, the combination of a supporting-frame, having the track-rails and the guide-rails, a shiftable bed-frame arranged to travel upon the trackrails, clamps carried by the bed-frame and arranged to engage with the guide-rails, a mast on said bed-frame, a boom, and suitable shovel-operating devices.

25. In an excavating apparatus, the combination with a boom, of trolleys slidable thereon,dru ms or windlasses adapted for manual operation,cables connecting said trolleys with said Windlasses individually, means for looking one of said windlasses against rotation, and adapted to hold one cable and one trolley against movement, a shovel, and a hoisting mechanism therefor; said shovel and one trolley member being operable by the nonbraked Windlass to advance the shovel simultaneously with the elevation thereof and during the period that the other trolley is held at rest by the other Windlass and its locking mechanism.

26. In an excavating apparatus,the combination with a boom, trolleys slidably mounted thereon, endless cables individually connected to the trolleys and suitably guided on said boom, drums to which the'cables are connected, means for operating said drums individually or collectively, a brake mechanism for one of the drums, a shovel suspended from one of the trolleys,'and a hoisting mechanism guided by the other trolley.

27. In an excavating apparatns,the combination with a drum,of trolleys slidably mounted thereon, an extension-bar connected to one trolley and slidably fitted to the other trolley, a cable connected to the trolley and its extension-bar another cable connected to the other trolley, and means for operating the two cables, ashovel suspended from one trolley, and a shovel-hoisting cable guided by the other trolley.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

CHARLES CHESNUT MCBRIDE.

\Vitnesses:

M. MYGATT, J OHN BENNETT.

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