US1298978A - Excavator-bucket cleaner. - Google Patents

Description

BMIAMAIQKBUCKEI CLEANER APPLICATIQN.HLE D FEB. 24. 1915.

1 ,298, 978. Patented Apr. 1, 1919.

2 SHEETSSHEET I,

T. LOKEN.

EXCAVATOR BUCKET CLEANER.

APPLICATION FILED FEB. 24. 1915.

Patented Apr. 1, 1919.

Z SHEETS-SHEET 2.

s'rx'rns ATE;

rants Loxmr, or KENOSHA, WISCONSIN, assicnon ro FREDERICK c. AUSTIN, or

cnroaeo, ILLINOIS.

EXCAVATORr-BUCKET CLEAN To all tvhom it may concern: I

- Be it known that I, TRULS LOKEN, a

citizen of the United States of America, and

resident of Kenosha, Kenosha county, .Wi's: consin, 611 Dayton street, have invented a certain new and useful Improvement in Excavator-Bucket Cleaners, of which the following is a specification.

My invention relates to excavating machines of that type in which a series of buckets travels around upper and .lower' sprockeowheels on a vertically arranged digging beam, the said buckets being secured to one or more sprocket chains, and means being provided in the. path 'of the buckets, at a point above the upper sprocket wheels, for

7 and including means whereby said rod may tilt freely in a vertical plane, when the pivoted bucket cleaner is operated about its horizontal axis by the pressure of the load in the bucket, thereby obviating the necessity of employing more or less'complicated connections between the said cleaner and the upper end of said. rod, as will hereinafter more fully appear, and whereby the said rod "is always subject to a straight endwise pull thereon, thus preventing the rod and other parts from wearing out too quickly} and serving also to increase the efficiency of said spring, as will also hereinafter more fully appear;

To the foregoing and other useful ends my invention consists in matters hereinafter set forth and claimed, but it will be understood that I do not limit myself to the exact construction shown and described.

In the accompanying drawings Figure 1 is.

Specification of Letters Patent.

Patented Apr. 1, 1919.

Application filed February 24, 1915. Serial No. 10,204.

to which the excavating buckets are secured. in such manner that they tilt away from the sprocket chain at their rear ends, as they travel over the upper sprocket wheel, and showing the said cleaning mechanism bywhich. the

[contents of each bucket is automatically -dis-.

charged therefrom while in the tilted or upside-down position shown.

Fig. 2 is a front elevation of the structure shown in Fig. 1. p

Fig. 3 is a rear elevation of the forked co'nnecting member which is employed at the upper end of thespring-rod to connect the latter with the armof the clearer.

Fig. 4 is a section on line 14 in Fig. 1. '-As thus illustrated, my invention comprises a supporting member A consisting of a casting secured at its lower end tothe upper end of the digging beam, which latter is of any suitable form. A horizontal shaft C is sup-ported'in a bearing a on the said member A, and is provided "with a pair of sprocket wheels 0, or equivalent devices, of any suitable character. The sprocket chains D are supported by said sprocket Wheels 0 and arranged to travel in the direction indicated by the arrow in Fig. 1, being connected together by a series of excavating buckets E secured at intervals thereto in such manner that each bucket tilts away from the sprocket chains when in position shown in Fig. 1, thereby discharging the contents or load from its rear end.

The cleaning mechanism comprises a cleaner F which is pivoted at f in the forked upper end portion of the member A, and which is provided at its forward end with a vertically disposed cleaner-plate G disposed in position to pass through the buckets and scrape up contents thereof. A sleeve H is provided with trunnions h mounted in trunnion bearings I on the rear side of the I member A, whereby this sleeve H is adapted to tilt about a horizontal axis arranged parallel with the axis of the cleaner F, and with the shaft C, being disposed a suitable distance below the latter. The rod J slides up and down in the sleeve H and is pro vided at its lower end with a shoulder j in the form of a nut and washer suitably secured thereon. A spring K, of helical form, is arranged on said rod for compression be tween said shoulder y' and the lower end of the sleeve H," and is compressed when the rod moves upward. At its upper end, said rod J is provided with a forked-shaped connecting piece L which has a pivotal connec tion l with the rear end of the cleaner F, whereby the pressure of the load in the bucket on the plate G will cause the rod J to slide upward.- It will also be seen that the rod must tilt in a vertical plane in order to have this upward .movement, inasmuch as the pivot Z swings on the arc of a circle struck from the pivot f, and for this reason the sleeve H is free to tilt in its trunnion bearings. Then when the bucket has passed, and the plate G has been released, the spring K will restore the entire cleaner mechanism to normal position, and at this time the rod again tilts about the axis provided by the trunnion bearings.

For the purpose of adjusting the tension of the spring K, and for thereby regulating the action of the cleaner, the upper end of the rod J is provided with an adjusting'nut M which bears against a shoulder on the connecting vmember L, which prevents the rod from being pulled downwardand out of place by the spring; By rotating this nut M the spring K can be compressed or expanded, Whichever is necessary or desirable, and after the proper adjustment has been attained the member L is then secured in the fixed position on the rod by means of the lock-nut N which bears against the lower end of said member, whereby the latter is clamped tight between these two nuts on the rod. Of course, the shoulder formed by the lower portion of the rod, and the tension of the spring and the position of the cleaner can also be regulated by adjustment of this nut. In this way, and with the provision of this nut and the nut M, the cleaning device as a whole can be adjusted or regulated to suit the requirements of the buckets or of different kinds of work. Also, itwill be seen that the trunnion bearings I have bolts 2' by which the outer halves of these hearings are held inplace, so that removal of these bolts will permit removal of the sleeve or bearing H when such is necessary or desirable.

With the foregoing construction, it will be seen that the rod J is always subject to a straight end-wise pull, is free from lateral pull or strain, and at the same time has a direct pivotal connection with the arm of the cleaner. Consequently, there is very little wearas between the rod and the sleeve H, and in addition the spring K valways works to advantage and without having to overcome unnecessary friction of the parts.-

disposed in position to pass through said buckets, an arm rigid with said cleaner, an

oscillating bearing, a rod to reciprocate in said bearing, a spring on said rod below said bearing, means on said rod to engage the lower end of said spring, an element pivoted on said arm, and screw threaded means to adjustably connect said element with the upper portion of said rod.

2. A structure as specified in claim 1, said means forengaging the lower end of said spring having asc'rew thread adjustment on p said rod. nut j is adjustable, being screwed onto the 13th day of February,

- Signed by me at Chicago, Illinois, this TRULS LOKEN.

Witnessesz RACHEL J. RICHARDSON, RosE E. SEHNEM.

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