US1219371A - Excavator. - Google Patents

Description

Patented Mar. 13, 1917.

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C. S. BUTTERFIELD.

EXCAVATOR.

APPLICATION FILED IuLY 28.1916.

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EXCAVATOR.

APPLICATlON FILED JULY 28| 1916. 1,2l 9,371.

Patented Mar. 13, 1917.

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C. S. BUTTERFIELD.

EXCAVATOR.

APPLICATION FILED IuLY 2'8. I9Ie.

Patented Mar. 13, 1917.

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C. S. BUTTERFIELD.

EXCAVATOR.

APPLICATION FILED JULY 28.1916. 1,21 9,371. Patented Mar. 13, 1917.

4 SHEETS-SHEET 4.

10 E lt/7 @NET CHARLES S. BUTTERFIELD, OF MISSION, TEXAS.

EXCAVATOR.

Speccaton of Letters Patent.

Patented Mar. 13, 1917,

Application filed July 28, 1916. Serial No. 111,896.

To all whom it may conccm:

Be it known that l, CHARLES S. BUTTER- innm), a citizen of the United States,` residing at Mission, in the county of Hidalgo and State of Texas, have invented new and useful Improvements in Excavators, of which the following is a specification.

The invention relates to an excavator, and more particularly to the class of canal excavating machines. 'f

The primary obj ect of the invention is the provision of a machine of this character wherein the buckets are automatically moved after the charging thereof for the discharge of their load at opposite sides of said canal or upon the banks thereof, the hanging and mode of operation of the buckets being novel to assure the excavation of the work with despatch and the positive charging of said buckets and the discharge of their contents.

Another obj ect of the invention is the provision of a machine of this character wherein a canal can be dredged, the working parts of the excavator being supported upon pontoons which float from the body of Water within the canal or channel and the booms and also the gunwale can be properly adjusted without excessive labor or inconvenience to the user of the machine.

A further object of the invention is the provision of a machine of this character wherein the capacity thereof can be varied and said capacity will be under the control of the strength of the boom, boom beams and power of the engine to pull drag lines.

A still further object of the invention is the provision of a machine of this character which is simple in construction, thoroughly reliable and eflicient in its operation, strong, durable and inexpensive in manufacture.

Other objects will be in part obvious and in part hereinafter set forth.

The invention accordingly consists in the features of construction, combination of elements and arrangement of parts which will be exemplified in the construction hereinafter described, and the scope of the application of which will bc indicated in the appended claims.

In the accompanying drawings:

Figure 1 is an elevation of an excavating machine constructed in accordance with the invention Fig. 2 is a side elevation.,

Fig. 3 is a fragmentary top plan view;

Fig. 4E is a view similar to Fig. 3, showing the dolly support and dollies therein, with the excavating mechanism removed;

Fig. 5 is a sectional view on the liuc of Fig. a, looking in the direction of the arrow;

Fig. G is a fragmentary vertical transverse sectional view through one of the dolly supports and dolly.

Similar reference characters indicate corresponding parts throughout the several views of the drawings.

Referring to the drawings in detail, A designates a pair of pontoons which are arranged side by side and are adapted to float and rise in a body of water within a canal, channel or the like, and between these pontoons is arranged a thrust or center board B which is of any ordinary well known construction, it being understood, of course, that the length and width of each pontoon can be varied in accordance with the size of thel canal or channel and also correspondlngly to the capacity of the machine for the proper and successful execution of the work in the dredging of a canal or channel. The pontoons A are connected together through the medium of end cross timbers C which are fastened thereto in any suitable manner.

Mounted upon the pontoons A at the top thereof are dolly supports l0 in which are arranged rollers ll constituting the dollies, and upon these rollers are adapted to move the gunwale frame 12 which carries at one end a boom beam 18 supporting a derrick hereinafter fully described.

Arranged at the desired point upon one or both of the pontoons A is a stationary engine lll of any approved type which operates a pair of drums 15 and 16, the connection between the same and the said engine 14 being of vany well known construction to permit the reversing of the drums 15 and 16 and the stopping and starting thereof when the occasion requires.

Adjustably connected to the boom beam 13 near the ends thereof are the booms 17 which extend in upwardly and forwardly divergent relation to each other to opposite sides of the machine, while supported upon the gunwale frame 12 is the derrick including an inverted substantially V-shaped frame 18 having the braces 19, and to the head 20 of this frame 18 are connected the blocks and falls or tackle 21. The fall line 22 of each is adapted to be fastened to a clevis 23 carried by the frame 18, and connected with these blocks and falls 21 are the wire'stake cables 24 which are also connected to the outer ends of the booms 17, as shown.

Mounted upon the outer ends of the booms 17 are drag line pulleys 25 over which are trained pull drag lines 26, preferably wire, the same being also trained over sheaves 27 located centrallyk on the boom beam 18 for the winding thereof on and from the drum 15, to which said lines 26 are connected, the saine being Valso connected to drag buckets 28 preferably of the shape shown and are adapted to be charged from the bed of the canal or channel for the delivery of their contents to the bank or ground at opposite sides of the same in a manner presently described.

Upon the head 20 of the frame 18 are mounted drag line pulleys 29 over which are trained the back drag lines 30, preferA ably of wire, and connected to the buckets 28 and also to the drum 16 for the winding thereof on and the unwinding of the same .therefrom when the machine is in operation.

Connected to the head 20 of the frame 18 which constitutes the derrick are wire cable guides 31 which are connected to a cross sill 32 at the rear end of the gunwale frame 13 and have therein turn buckles 33 for the tightening or slackening of each guide.

The, gunwale frame 12 is moved backwardly and forwardly upon the roller 11 throughthemedium of a connection with aV winch Si supported upon one of the pontoonsIA and the same is operated in any suitable manner, although it may be operated v lfromtheengine 111 or otherwise.

It is to be understood, of course, that theY Y pontoons A can be anchored within the canal or channel in any ordinary well known manner.

In the operation of the machine the buck-V ets 28 are broughtto the center of the pon-V toonsby the back drag line 8O after the dumping ofl said lbuckets andthen the same are lowered to be iilled by the pull drag 1 ing wound upon and unwound from the drums 15 and 16.011 the operation of the engine 14 which is controlled by an engineer. It will of course beunderstood that the back drag line 30 can be spliced together rearwardly of the derrick and in this event a single line from the point of the splice can be connected to for the winding thereof on and from the drum 16, and in this event either or both buckets 28 maybe operated since the splice of the back drag lines 30 may be separated for the purpose of using either right or left back drag lines. Each bucket 28 carries a stirrup 35 to which each Iback drag line 30 is connected, and this stirrup has therein a pin 36 which, on the adjustment thereof, will regulate the tilt of the bucket to load fast or slow, as usual.

The buckets 28 are made from material sul'liciently vheavy to submerge themselves and also load themselves upon the proper movement of the drag lines 26 and 30, and are constructed to load and carry the number of cubic feet of excavated material desired, while the booms 17 can be readily adjusted and also the derrick, as the occasion may require.

From the foregoing description, taken inv connection with the accompanying drawings, the construction and'operation of the herein described-excavator will be readily apparent, and, therefore, a more extended explanation has been omitted.

Having thus described my invention, li claim: Y

1. An excavating machine comprising a pair pontoons, a thrust board arranged between the saine, a gunwale frame mov-` ably supported upon the pontoons, a boom beam fixed to one end of the` gunwale frame, a pair of booms adjustably connectedto the beam, a fderrick upon the gunwale frame, drums rotatably supported-upon the Apontoons, meansconnected with the derrick and the booms for suspending` the latter, drag buckets, and pull and back drag lines con nected with the buckets and with the drumsr for operation by the Llatter to move the bucle ets towardand away from each other and also for raising andI loweringthe saine.

2. An excavating machine comprising a pair of pontoons, a thrust board arranged between the saine9 a gunwale frame movably supported upon the pontoons, a lboom beain ixedfto one'endof the gunwale frame, a pair of booms adjustably connected to the beam,y a derrick uponrthen gunwale frame, drums rotatably supportedupon the: pontoons, means connected with the "derrick and the booms for suspending-the latter, drag with vthe bucketsand with the drums for operation by the latterto move kthe buckets Y i toward and away fromeach other Vand also. for raising and lowering. the same, dolly supports on the pontoons, and dollies arranged inl the supports and. havingv theV gunwale frame thereon. Y Y

3. An excavating ymachine',icomprising. a pair of pontoons, a thrust board `arranged between the same, a gunwale frame movably supported upon the pontoons, aiboom beam fixed to one end of the gunwale frame, a pair of booms adjustably connected to the beam, a derrick upon the gunwale frame, drums rotatably supported upon the pontoons, means connected with the derrick and the booms for suspending the latter, drag buckets, pull and back drag lines connected with the buckets and the drtuns for operation by the latter to move the buckets to ward and away from each other and also for raising and lowering the same, dolly supports on the pontoons, dollies arranged iu the supports and having the gunwale frame thereon, and guide pulleys on the boom beam, booms and derrick for the drag lines.

4. An excavating machine comprising a pair of pontoons, a thrust board arranged between the same, a gunwale frame movably supported upon the pontoons, a boom beam fixed to one end of the gunwale frame, a pair of booms adjustably connected to the beam, a derrick upon the gunwale frame, drums rotatably supported upon the pontoons, means connected with the derrick and the booms for suspending the latter, drag buckets, pull and back drag lines connected with the buckets and with the drums for operation by the latter to move the buckets toward and away from each other and also for raising and lowering the same, dolly supports on the pontoons, dollies arranged in the supports and having the gunwale frame thereon, guide pulleys on the boom beam, booms and derrick for the drag lines, and means for adjusting the gunwale frame.

5. An excavating machine comprising a4 pair of pontoons, a thrust board arranged between the same, a gunwale frame movably supported upon the pontoons, a boom beam fixed to one end of the gunwale frame, a pair of booms adj ustably connected to the beam, a derriek upon the gunwale frame, drums rotatably supported upon the pontoons, means connected with the dei-rick and the lbooms for suspending the latter, drag buckets, pull and back drag lines connected with the buckets and with the drums for operation by the latter to move the buckets toward and away from eac-h other and also for raising and lowering the same, dolly supports on the pontoons, dollies arranged in the supports and having the gunwale frame thereon, guide pulleys on the boom beam, booms and derrick for the drag lines, means for adjusting the gunwale iframe, and means for operating the drums.

In testimony whereof I aiiix my signature @HARLEY S. BUTTERFIELD.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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