US970750A - Excavating and conveying apparatus. - Google Patents

Description

J. L. POTTER.

EXGAVATING AND CONVEYING APPARATUS.

APPLICATION FILED 00T.26, 1909. 970,750. Patented Sept. 20, 1910;

WITNESSES:

A [TURN/5y.

J. L. POTTER. EXOAVATING AND OONVEYIKG APPARATUS.

APPIJOHTION FILED 0013.26, 1909. 970,750. Patented Sept. 20, 1910.- I 6 snnnTs-sfinn'r 2.

' IIATAORNJLY.

. J. L. POTTER.

EXGAVATING AND CONVEYING APPARATUS.

APPLICATION FILED 00T.25, 1909.

970,750. A Patented Sept. 20, 1910.

SHEETS-SHEET 3.

IVITNESSES: [.VVENTOR:

A TTORNEY.

J. L. POTTER.

EXGAVATING AND CONVEYING APPARATUS.

APPLIOATION FILED 001225, 1909.

970,750. A Patented Sept. 20, 1910.

5 SHEETS-SHEET 4.

ATTORNEY.

J. L. POTTER.

EXOAVATING AND' CONVEYING APPARATUS.

APPLICATION IILBD 001225, 1909.

970,750. Patented Sept. 20,1910.

5 BBEETE-BHBBT 5.

WITNESSES: INVENTOR: I 15W I ATTORNEY.

JOSEPH L. POTTER, .OF INDIANAI'OLIS, INDIANA.

EXCAVATING AND CONVEYING APPARATUS.

Specification of Letters Patent.

Patented Sept. 20, 1910.

Application filed October 25, 1909. Serial No. 524,459.

To 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 1 State of Indiana, have invented certain new and useful Improvements in Excavating and Conveying Apparatus; and I do declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to portable apparatus for excavating or for hoisting and for conveying that which may be hoisted away from the hoisting apparatus, the invention having reference more particularly to apparatus for digging trenches and conveying the earth removed in excavating either back into the trenches or elsewhere.

The object of the invent-ion is to provide --simple-and compact apparatus for hoisting and conveying that will be, capable of being operated by the least number of attendants possible in order to reduce the cost of operation to the minimum, another object being to provide improved hoisting and conveying apparatus that will be adapted to be variously modified in detail to suit different requirements in excavating along predetermined lines, as for trenches or the like.

The inventlon conslsts in movable ho1sting apparatus comprising a car on which 1s mounted a derrlck-crane and also an en g ne, a movable trestle, a conveylng car mounted on the'itrestle and connections'loe-v tween the derrick-crane'and the conveying car for automatically controlling the movements of the conveying-car in harmony during 0 eration with the hoisting apparatus,

, where y the hoisted material may be automatically conveyed away and the conveyingcar returnedto be reloaded; and the invention consists further in the novel parts and combinations and arrangements of parts, as

hereinafter particularly described and then defined in the appended claims.

Referring to the drawings, Figure 1 is a side elevation of the apparatus modified for sewer excavations, portions of the trestle being broken away; Fig. 2, a topplan of a speed-reducing drum preferably employed on the derrick-crane; Fig. 3, a fragmentary vertical longitudinal section of the trestle and conveying car showing apparatus for automatically dumping the load out of the car; Fig. 4, a topFplan of the apparatus as shown in Fig. 1; 1g. 5, a fragmentary vertical section on the hue A A in Fig.1; Fig. 6 a fragmentar vertical section on the line F B in Fig. 5; ig. 7, a side elevation of the frame of the conveying-car; Fig. 8, a fragmentary top plan of the frame of the conveying-car; Fig. 9, a front elevation of the apparatus as shown in Fig. 1 omitting parts of the hoisting apparatus; Figs. IO-and l1, fragmentary sectional details of the apparatus for automatically dumping the loads from the conveying-car; Fig. 12, a front elevation of the apparatus modified for conveying elsewhere than back to the excavation, as when digging trenches that are'intended to remain open, parts of the hoisting apparatus being omitted; Fig. 13, a side elevation of the apparatus adapted to convey the hoisted material or earth to one side of the line of excavation; Fig. 14, a top plan of the ap aratus as shown in the preceding figure; ig. 15, a fragmentary lan showing a portion of the forward end 0 the engine car and a guide sheave mounted thereon; and Fig. 16, a fragmentary detail of the. boom shown in Figs. 13 and 14.

In the different figures of the drawings corresponding reference characters indicate corresponding elements or features ofconstruction herein referred to. I

Referring specifically to the drawings, the numeral 1 indicates a section of the earth in which is a trench 2 having sheathing 3 as usual when relatively narrow excavations are made, there being stringers 4 and 5 on the surface of the earth adjacent to the excavation, and cross-ties 6 more remote from the excavation and supporting track-rails 7 and 8 on which the hoisting and conveying apparatus may be moved as the excavating operations proceed. 4

A car 9 having wheels 10 and 10, 11, 11, is provided and mounted on the rails, a suitable hoisting engine 12 being mounted on the car, the engine including two suitable hoisting drums 13 and 14. A derrick-crane is mounted also on the car and comprises two upright posts 15 and 16 on which is a .tiebeam 17, the posts being suitably braced to constitute an upright frame and serve as a mast on the upper portion of which a shaft 18 is rotatably mounted. A speed-reducing drum is secured to the shaft and comprises a relatively large drum part 19 and. two

drum parts and 20 that are relatively smaller in diameter, as preferably constructed, and in some cases one of the smaller drum parts may be dispensed with.\ Motion is given to the drum in one direction by means of a cable 21 that is partly wound about the drum part 19 and secured thereto 19 may serve the purpose of the two cables 21 and 21,the use of the term cables being relative, and any equivalent thereof may be employed if desired for rotatively mov ing the speed-reducing drum positively or without slippage. The derrick-crane comprises also a boom which preferably consists of two spars 22 and 22 suitably connected together and pivotally mounted on a shaft 23 which is supported in a suitable'manner on the car 9 adjacent to the lower portion of the upright frame, a-gnide roller 24 being rotatably mounted also on the shaft, the shaft being horizontal and extending transversely of the car, so that the boom may move pivotally up or'down in the plane in which the trench is tobe made. Two ' cables 25 and 25 are connected to the free end of the boom and are secured to the smaller drum parts 20 and 20 to be wound thereon for raising the boom, one of the cables, however, permissibly being omitted if desired.

- The end portion of the boomsupports a pivot rod 26 on which a ham 27 is mounted between its ends and between the two spars of the boom, one end of the .beam having a suitable liftingv device mounted thereon which preferably is a scoop or shovel 28 that preferably has a drop bottom 29, the arrangement being such thatwhen theboom is lowered a scoop may be caused to drag against the earth and be filled on moving the boom upward. The beam 27 may be controlled by means that are connected to the beam at opposite sides of its pivot and extend about the guide roller 24 to the drum 14 to which they aresuitably connected, or the two cables may be av single cable or rope wound a few times around the drum 14 to prevent slippage, the ends of the cables or rope'beingconnected to-the beam, as will be apparent, any; suitable guides desired or required being provided for guiding the cable or cables, the arrangement being such that the position" of the beam relatively to the boom may be controlled by the drum '14., i

of two cables 30 and 30 A movable trestle is provided that may be modified to suit requirements or conditions, and when the earth from the excavation is to be used to fill inthe trench'after building a sewer wall therein, the trestle extends longitudinally substantially from the derrickcrane along the line of the trench, the trestle being preferably connected to the engine-car and comprising stringers 31 and 32 supported ona transverse beam .33 which is provided with legs 34 and 34 mounted on wheels 35 and 35 respectively, the stringers having a suitable number of intermediate supports comprising each a beam 36 and legs 37 and 37 mounted on Wheels 38 and 38,

. the wheels of the trestle being mounted on the track rails 7 and 8. A pair of track rails 39 and40 are secured on thetops of the stringers 31 and 32'for' guiding a conveying car which preferably comprises a frame 41 having wheels 42 that are mounted on the rails 39 and 40, the car frame being provided with a suitable lug 43. The car in-,

cludes a body 44' provided with adrop bottom 45 which is supported on a hingerod 46 and normally held in closed positlon by a spring-catch 47 with which the car body is provided. The'hinged end of the door has an arm or arms 48 secured thereto, each arm having a weight 49 thereon for balancing the hinged bottom or closing the bottom after having been dropped by a load. In.

order, to automatically release the springcatch to permit the bottom 45 to drop, a

guide. bar' 50 is fixedly supported on thetrestle and adjust-ably supports a clamp 51 provided with binding screws 52, the clamp supporting a plate 53 on which a finger 54 is mounted by means of a hinge 55, the

finger having a rod 56 thereon that is provided with a stop device adapted to engage the under side of the plate 53 to prevent movement of the finger away from upright position in one direction, the finger being movable in the opposite direction or toward the engine car, anda spring 58 is connected vto the rod 56 and also to the plate 53 for normally holding the finger 54 in upright position in the path of thespring-catch 47,

so that when the conveylng car moves outward from the engine car to the desired position. for delivering its load into the trench, the sprin -catch will engage the finger 54 and be orced to release the drop bottom 45 which will swing down at a suitable angle to discharge the load. The spring-catch, of course, will slide over ,the

finger 54 if the car advances sufficientl and on return of the car the spring-catc will push the fin er 54 out of its way and then sitionby the spring 58. If from any cause the bot-tom'is not swung up entirely to closed position by the counter weights, the door may be forced to close when brought into contact I the finger W1 1 be returned to it's normal po- '65 '75 nd 76 are preferably connected toxends ported on the trestle, and it will be apparent that if desired such inclined bar may be I placed in the desired position to effect the closing ,of the bottom, in which case the counter weights may be dispensed with.

While it is apparent that .the trestle need not of necessity be horizontal it is preferably so constructed, and as will be seen the portion of the trestle adjacent to the derrick crane is open, so as to permit the boom and its lifting devices to operate between the two track rails of the trestle. In order to move the conveying car a relatively long distance, speedincreasing gearing is provided therefor comprising preferably a pulley 60 which is secured to the shaft 18, a shaft 61 being suitably mounted on the car 9, and a. pulley 62 which is smaller in diameter than the pulley 60 is' secured to the shaft 61 and connected by a belt 63 with the pulley 60. Another pul ey' 64 that is'relatively larger in diameter than the pulley 62 is secured also to the shaft 61 or so mounted that it may be driven by the pulley 62. A guide pulley 65 is mounted on the end portion of the trestle and a cable 66 extends about the pulley 64 and the pulley 65 and is secured to the lug 43 of the conveying car, so that the car will be moved when the boom is moved, and the relative extent of movement of the conveying car may be predetermined by calculation to ascertain the required relative diameters of the pulleys 60, 62 and 64, which as will be seen increase the speed of the conveying car with respect to the speed at which the boom moves.

When it is desired-to dig a trench that is to remain open the apparatus is slightly modified, preferably as illustrated in Figs. 12 to 16' inclusivein which the posts 15 and 16' are mounted on the engine car substantially as above described and have a cap beam 17 secured to the upper parts thereof. The boom is mounted on t e engine car by means of hinge rods 67 and 67 A pair of guide- sheaves 68 and 69 are mounted on the beam 17 and -a cable 7 O is connected to the end portion of the boom and runs over the sheave 68 to. the drum 14 to which the cable is connected for raising or lowering the boom, and a cable 71-is connected to the drum 13 .andruns over the sheave 69 and also over a sheave 72 that is mounted position. in order to elevate the loads re-- ceived from the hoisting device; The sills temporary rail 87 on which the wheels may roll. A pair of track rails 88 and '89 are secured on the stringers 79 and. 80 and support and guide a conveying car 90 provided with wheels 91 that run on the rails, the car having a suitable drop bottom 92. A cable 93 is connected to the outer end portion of the boom and runs over a guide sheave 94 thatis mounted on the beam 17', the cable extending thence downward and under a guide sheave 95 that is rotatable on a bracket 96 (Fig. 15) mounted on the engine car 9, the cable extending thence about two guide. sheaves 97 and 98 that are mounted on the rail 81 and thencebackw'ard to the car 90 to which the cable is connected so that when the boom moves downward the conveying car will be drawn outward by the connecting cable 93, and when the boom rises so as to slacken the cable it is evident that the conveying car will return down the sloping trestle by the force of gravity, and therefore the conveying car is automatically controlled in its movements by the moving hoisting apparatus.

It will be apparent from the foregoing that automatic dumping of the car 90 may be accomplished by various means such as above described, without requiring a repetition of-the description of such appliances. It should be explained also that the movable trestlev may be modified, so as to guide the conveying car in any desired direction other than those illustrated. And it will be apparent also that either specific form of trestle may be employed with either one of the specific forms of hoisting apparatus, and that various modifications in detail may be made within the scope of the accompanying claims.

In practical use the derrick-crane may be variously employed for loading the conveying car or for hoisting loads from the car, as will be apparent, and when employed in excavating operations the apparatus is moved along the track rails as the work proceeds, and it will be understood that the shoveling or scooping devices are designed to be drawn along the ground or in' the trenches toward the engine car-for filling them and then lifted by meansof the en-.

gine drums and the derrick-crane to the required position above the trestle on which the conveying car will stand at the predetermined loading station to which the conveying car will advance during the upward movement of the boom; the load being then dumped'into the conveying car,

after which the boom when released will descend by gravity force and draw the conveying car outward along the trestle to its discharging station or position, and it will be understood that when in some dases there may not be sufiicient weight on the boom to enable it to move the conveying car outward with its load, the hoisting engine may cooperate to assist in moving the conveying car outward, suitable provlslon being made distance overthetrench, so as to fill the trench with but one handling of the earth taken therefrom.

Having thus described the invention, what is claimed as new, is-

1. Hoisting and conveying apparatus including an engine-car, a hoisting-engine on the engine-car, an upright frame .on the en.-

gine-car, a trestle extending from the engine- 7 car, a horizontal pivot with a stationary axis on the engine-car in proximity to the adjacent end of the trestle, a boom mounted on the engine-car with its end movable upward above the adjacent end of the trestle,

a rotative guide on they upper portion of the frame, a cable connected with the hoistingengine' and coiiperating with the guide to ,move the boom, a'conveying-car movable on the trestle,'a guide-pulley on the engine-car in proximity to the pivot, a guide-pulley on the remote end portion of the trestle, a cable connected-to the conveying car and extending about the guide-pulleys to the rotative guide, the cable being operatively connected with the hoisting engine and actuated thereby simultaneously with the movement of the boom, and a lifting device'movably connected with the boom and guided thereby first toward and thence 'above the adjacent end of the trestle.

' ,cent end of the trestle in a vertical plane,

2. Excavating and conveying apparatus including an engine-car, .a hoisting-engine on the engine car, anupright frameon the engine-car, a trestle extending from the engine-car, a boom pivotally supported on the engine-car in proximity to the trestle and the bottom of the frame with its free end movable upward above the adjaa; conveying-car movable on the trestle, "a rotative guide on the upper portion of -the frame, hoisting means connected operatively with the ,hoistin'g-engineand the moving the boom, a draft-cable connected device connected movably with the boom. and guided thereby toward and above the adjacent end of'the trestle, with compound gearing mounted on the engine-car and having operative connection with the cable 3. Excavating and conveying apparatus in cluding an engine-car, a winding-drum and tle extending from'the engine-car, a boom pivotally supported on the engine-car in proximity to'the trestle and the bottom of the frame with its free end movable upward mounted on the upper portion of the upright frame, a large drum mounted on the shaft driven by the large drum, a cable con nected. to the smaller drum and also to the boom, a conveying car movable on the trestle, a gear pulley on the shaft and driven bythe large drum, a rotative guide mounted on the engine-car in proximity to the bot tom of the upright frame, a guide sheave on the remote portion of the trestle,.-powertransmission means having operative connection with the rotative guide and the sheave and connecting the conveying car with the gear pulley, and an excavating device guided by the boom.

4.. xcavating and conveying apparatus including an engine-car, a winding-drum and an upright frame on the engine-car, atrestle extending from the engine-car, a boom pivvating t leviee guided by the boom, a shaft the uprightframe, a hoistin cable operatively connected with the win ing-drum and the boom, a cable-drum secured to the shaft and engaged by the cable forrotating' the shaft, a gear wheel secured to the shaft, a countershaft mounted on the engine-car in proximity to the lower portion of the upcountershaft, a sheave on the remote portion of the trestle, a conveying car movable on the trestle, a draft cable in contact with the vsheave and connected with the conveying car and the speed-increa'. "c.g pulley, and driving gearing connecting the gear wheel the draft cable faster than the hoisting cable. j Y

5. In excavating and conveying apparatus, the combination of an engine-car, a winding-drum on the engine-car, a boom pivoted on the engine-car to move vertically, a-trestle, and a conveying-car movable on boom and cooperating with the guide for hoisting-engine and the boom and the draftan upright frame on the engine-car, a tres-,

shaft, a cable connected with the winding,, drum and the large drum for'operating the drum, a relatively smaller drum .on the right frame, a'speed-increasing pulley on the i to the conveying-car, and an excavating above the adjacent end of the trestle, a shaft otally supported on the engine-car, an excamounted rotatively on the upper portion of with the speeddncreasing pulley fordriving ed with the conveying-car and also opera-' tively with the winding-drum and the boom, for moving the conveying-car relatively farther than the boom slmultaneously with the movement of the winding-drum.

6. In excavating and conveying apparatus, the combination of an englne-car, a winding-drum on the engine-car," an upright frame on the engine-car, a boom ivotally supported on the engine-car, a hoisting cable operatively connected with the boom and the winding-drum, a trestle, a conveying car movable on the trestle, a speed-increasing pulley mounted rotatively on the en ine-car at the lower portion of the upright rame, a relatively small wheel connected to the pulley, a sheave mounted on the trestle, a cable guided on the sheave and connected to the conveying car and with the pulley, and power-transmitting means 0 eratively connefiing the small Wheel wit the hoistingca e.

7. In excavating and conveying apparatus, the combination of an engine-car, an upright frame and a winding-drum on the engine-car, a boom pivoted on the engine- 'car, a trestle, a sheave mounted on the trestle, a conveying car movable on the trestle, a drum-shaft mounted rbtatively on the uper portion of the upright frame, a large drum and a relatively smaller drum and also a gear pulley secured to the drum-shaft, aca 1e connected with the winding-drum and the large drum, a cable connected with the boom and the small drum, a countershaft mounted on the lower portion of the upright frame, a large pulley and a relatively small pulley on the countershaft and connected together, a transmission belt connecting the small pulley with the gear pulley, and a cable in contact with the sheave and connected with the large pulley and the conveying car.

In testimon whereof, I aflix my signature in presence ot two witnesses. M

JOSEPH L. POTTER.

Witnesses:

HARRY D. Pmnson, E. T. Smvms.

Images