US1064120A - Excavator. - Google Patents

Description

A. G. BANSMER.

BXGAVATOR.

APPLIUATION FILED muur. 1912,

1,064,120, `Patented June 10, 1913. Mums-SHEET 1.

9 NVENTOR s se kto

l 65 bra at once that as the dipper arm' is swung upward, the trip will be brought against the stop and thereby oscillated so that a pull will be exerted on the chain 22 and the bolt released to permitthe door to open and the contents of the bucket to be discharged. 0n one end of' the shaft or pivot 23, I provide a' 'cam 30 arranged to bear a ainst the lower end of a brake lever 31, vv ich is fulcrumed upon one or lboth of the side plates 24, andtproj'ects above the upper edge thereof, the `upper end of the lever being pivotally connected to the upper end of a link 32, which extends downwardly and forwardly between the side of the carriage and the boom and has its. lower end pivoted to a brakeshoe'33, arranged to bear upon the rail 5' and engage between .the same and the forward supporting roller 26. It will readily be se`en that when the dipper arm is raised, the cam will release the brake lever sothat the brake shoe will be free and the carriage may then travel along the boom. As the dipper arm is returned to a perpendicular position, the cam will bear upon the brake lever and actuate the same to apply the brake shoe so that the carriage will be locked to the boom whereupon the bucket may be edectually operated to take up the dirt, gravel or other material to be moved. By properly governing the time and speed of operation of the cables 11 and 14 at the engine, the movement of the boom, the carriage, and the bucket may be so adjusted as to lock the carriage to the boom at any point'aklgong the same and discharge the contents ofthe bucket wherever desired.

It will be noted that l have produced an apparatus which lis composed ot few parts and that the parts are simple in construction and compactly arranged. The carriage isentirely automatic in its operation and is so combined with the boom that it can not liti slip transversely around the same and does,

to be liable to interfere with the operatingcable orl the dipper arm. y

Should conditions require the use of a wooden boom, the construction. shown in so Figs. 4 and 5, may be employed.v In this arrangement, the Wooden boom 34has anble bars 35, disposed along its sides at its lower edges to constitute track rails, these 'bars being rigidly secured to'hangers 36 passed over the boom at intervals along the same. The side plates 37 of the carriage are inthe form of. channel bars connected at their ends by transverse I-beams which are arranged close to the under side of the boom to hold eo the supporting rollers on the track rails@ Wings 38 are secured to and dependfrom the side lates to provide bearlngsfor the rock sha 't 39, upon which are mounted Ith'e l flipper arm, the door-releasing trip, and the e-controlling Caini When the apparatus is to be, subjected to very heavy strains, the construction shown in F lgs. G and 7 may be, employed. In this form, instead of a single I-beam, the boom is formed of a pair of angle bars 40, constituting the track rails, which are connected to the upper longitudinal bars. 41, by truss bars or braces 42, disposed at the outer sides of the rails, the bars 41 being connected by cross braces 43. Additional cross braces 44 75 may be provided at an intermediate point between the rails, as shown best in Fig. 7, it deemed necessary.

It will readily be seen that the boom has an open bottom in this construction and the brake lever is, therefore, arranged centrally between the side plates of the carriage instead of outside the same. f The pivot pin 45 .inserted through the upper end of the lever .is extended to the sides of the carriage and there connected to the links which carry the brake shoes. -The trigger for d1schag- "ing the contents of the bucket is arranged outside Ithe carriage and may be duplicated at the two sides, the stop being in the form f of a pin or lug 4G, projecting from the side of the carriage.

vrl`he operation of the apparatus will'be easily understood lfrom thel foregoing description. The parts being in the position shown in full lines in Fig. l, if the cable 14 be gently slackened the carriage will descend von the booml to any desired point. When this' point is reached, the cable is released so that the dipper arm swings vto a position approximately at a right angle to the boom, thereby operating the brake so that further movement of the carriage along the boom will be prevented. The cable 1l is now paid out whereupon the boom will 4105 1swing downward and rest upon the dippe'r i arm, its weightserving to hold the bucket to its work, A forward pull upon the cable 14 will draw the bucket through the earthor material being moved until the bucket 11d is filled and the boom is then drawn upward by means of the cable 11 at the proper period of the operation so that by the time the trip lever is actuated to release the door of the bucket, the bucket will have been swung to a position over the dumping point.

Having thus fully described my invention, what I claim as new and` desire to secure by Letters Patent of the United States, 15:- y In an excavator, the combination of a boom having spaced. longitudinal flanges, a

'carriage traveling on4 said ianges, a'dipper -arln plvotally hung on sal-d carriage, a

bucket carried by said arm, means `:for acltuating the boom, means for operating the `dip'per arm and to effect movement of the carriage along thelfloom, and 'means controlled by the dipper arm tor locking the carriage to the flanges on the boom.

maaien 2. In an excavator, the combination of a boom having spaced longitudinal 'lanwes, a carriage traveling yon said llangee, a ipper arm pivotally hung on said carriage, a bucket carried by said arm, means for actuating the boom, means for operatingr the dipper arm and to effect movement o'4 the carriage along the boom, means controlled by the dipper arm for locking the carriage to the flanges of the boom, and means ccntrolled by the dipper arm to dischar ge th contents of the bucket. i

3. In an excavator, the combination ont a boom, a carriage mounted to travel thereon, a dipper arm hung nn the earriage,'a bucket carried by said arm, means `for aesaid arm, a closure for 'the bucket, a trip consisting of an angle lever mounted on the support for the clipper arm, a connection between one arm of said lever and the closure, and a stop on the carriage in the path ot' the other arm of the lever.

4. In an excavator, the combination ofna boom, a carriage movable therealong, a brake lever fulcrumed on the carnage, a brake shoe connected with said lever and arranged to engage the boom, a dipper arm hung on the carriage, and means movable with, the clipper arm and bearing on the brake lever to actuaite the same.

'5. ln an excavator, the combination of a boom, a carriage mounted to travel thereon, a brake lever on the carriage, a brake shoe connected to the-nippel' end of the brake lever and adapted to engage the boom, a rock shaft journaled in the carriage, a dipper arm secured to said rock shaft, and a cam on said shaft bearing against the lower end of the brake lever.

6. In an excavator, the combinatienoi a boom, having spaced longitudinal flanges, a carriage mounted to travel on said flanges, a

`brake lever on the 'farriaga a brake shoe connected to the upper end of the brake le ver and adapted to engage the said flanges, a rock shaft jeurnaled in the carriage, a clip per arm secured to said rock shaft, and a cam on saidsha'ft bearing against the lo'wcr end of the brake lever.4

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

ADOLPH GUSTAV BANSMER.

Witnesses J. Solmernn, Jr., JACOB Scn'anrnn.

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