USRE21664E - Bxcket - Google Patents

Description

Dec. 17, 1940. w PAGE Re. 21,664

BUCKET Original Filed March 15, 1953 5 Sheets-Sheet l J. W. PAGE Dec. 17, 1940.

BUCKET Original Filed March 15, 1933 5 Sheets-Sheet 2 Dec. 17, 1940. w G 7 Re. 21,664

BUCKET Original Filed March 15, 1935 5 Sheets-Sheet 3 v Dec.'l7, 1940. w PAGE I Rs. 21,664

BUCKET Original Filed March 15, 1933 5 Sheets-Sheet 4 x J. W. PAGE BUCKET Dec. 17, 1940.

Original Filed Marcfi 15, 1953 5 Sheets-Sheet 5 kfo e3 Reiuued Dec. 17, 1940 UNITED STATES PATENT OFFICE rial No. 680,960, March 15,

1983. Application for reissue April 20,1939, Serial No. 269,081

3 Claims.

This invention relates to improvements in buckets and, more especially, power buckets designed for excavating, digging, scraping, drag-. 8 s. and the like.

Among the features of my invention is the provision of such a bucket with its forward edges or front end so shaped that it will roll or rock into digging position. As here shown. the forward edges or front are curved. The bucket may be referred to, therefore, as a rocker-type bucket, it being understood that I claim to be the first inventor of this type ofbucket.

By the use of my invention, the efficiency of buckets of the character referred to is increased. I have found that the buckets take the load quicker and dig deeper. The invention is of value whether the bucket is used for shallow or deep digging.

Although, in general, my invention contemplates shortly the curving of the forward edges or front end of the bucket, I have found that in connection with this feature, other features of importance may be employed. For example, the front end of .the bucket may be weighted, the pulling or drag line may be fastened relatively low and far back, and the front of the bucket may be relatively heavy with respect to the back when the bucket is empty. These things, therefore, are also features of my invention.

Another feature of my invention is the arrangement of the clevis pins on a slant so that the bridle chain connected to the pulling line will not interfere with the proper operation of the bucket.

Another feature of my invention is the provision of a bucket having an arch in front of the attachment of the pulling line. This provides a stronger bucket and eliminates forward edges exposed to damage when the bucket falls on its forward end.

Other features and advantages of my invention will appear more fully as I proceed with my speciflcation.

In those forms of devices embodying the features of my invention shown in the accompanying drawings- I Figures 1 to 4, inclusive, are views in side elevation of the invention applied to aPage bucket, showing the same in various positions; Fig. 5 is a vertical sectional view: Fig. 6 is a view in front elevation of the same: Fig. '7 is a view in side elevation showing the invention applied to a tower excavator bucket; Fig. 8 is a similar view showing a power drag scraper; Fig. 9 shows a power plow scraper; Fig. 10 shows a slack line cableway excavator bucket; Fig. 11 shows a hoodless drag line bucket of the Page type.

I shall first describe in detail the Page bucket 'shown'in Figs. 1 to 6, inclusive. As here shown, the bucket, indicated in general by III, is provided 'withthe usual cutting lip or forward cutting edge I I provided with the teeth l2. l3 indicates the bottom of the bucket and I4, the back thereof. The sides of the bucket are indicated by ID.

Ashere shown, the sides ii of the bucket are extended forwardly of the cutting lip II and curved, as indicated by l5, to form rockers. The upper forward edges of the sides are connected by the arch l6. l1 indicates the usual loading, pulling or hauling line connected by the bridle chains II to the front of the bucket. l8 indicates the lifting or hoisting line connected by the bridle chains l8 to the sides of the bucket, such connections being pivoted at It. 20 indicates a holding line leading from the hauling line i'l over the sheave'2i to the center of the arch I8, the connection to said arch being pivoted, as indicated by 22. The construction and operation of these lines are well known and need not be described in detail.

In Fig. 1 is shown an empty bucket in substantially the position occupied by it when it strikes the ground 23 preparatory to taking a load. As soon as the forward edge engages the ground, the bucket will rock or roll backwardly on the curved forward edges or rockers l5 to the position shown in Fig. 2. In this position it will rest in equilibrium on the teeth i2 and the front of the arch; and it will stay in this position even after the hoisting line II is slackened. .When thus resting, the greater part of the weight of the bucket will be on the teeth. With the older types of bucket it is diillcult or impossible to get the bucket to rest in a position, with the hoist line slackened, with any substantial part of its weight on the teeth. A bucket embodying my invention which can be placed on its teeth (with a substantial part of the weight of the bucket on the teeth) will dig much deeper, much harder material and load much quicker than one that has to be dragged before a substantial part of its weight can be concentrated on the tooth points. The downward and rearward slant of the hitch plate pins 25 also permits or aids the bucket to stand in the position shown in Fig. 2 with the hoist line slackened. In this position, these pins are substantially parallel with the ground. If the pins were not thus slanted, the forward end of the bucket could not becut away to create the rocker effect,

and also permit the bucket to stand on its teeth.

It will be seen from the drawings that when the bucket is in the position shown in Fig. 2, the two bridle chains Hf (attached to the pulling line II) have their ends (where attached to the clevises 24) at the ground level.

After the bucket is in the digging position shown in Fig. 2, tension may be put on the pulling line i1, whereupon the teeth will dig into the ground and the bucket will assume the position shown in Fig. 3 or Fig. 4, or sequentially the position shown in Fig. 3 and then the position shown in Fig. 4. Further pulling will cause the bucket to take its load.

5 Each of the two bridle chains I1 is attached to a clevis II. The clevis on each side of the bucket is pivoted on a pivot pin 2| mounted in the four separated loops or bearings 2|, 2'. The clevis 24 is provided with two loops 21, 21 engaging the pin 25. This permits vertical adJustment of the clevis into various positions. It is to be particularly noted, also, that the clevis pins 25, II are slanted or battered upwardly and inwardly. as best shown in Fig. 6. This slant or batter is substantially the same as the taper or slant of the two bridle chains II. In other words, each pin has the same batter or slant with respect to the vertical as each chain I'lhas with respect to the center line of the bucket. Because of this construction, tension of the chains l'l' does not interfere with the operation of the bucket as the same rotates upon the pivotal supports ll.

' In Fig. 7, the rocker front I II is shown applied to a tower excavator bucket. Here the pulling line is indicated by I" and Ill indicates the hoisting line. The sides of the bucket are indicated by I ID. The details of this bucket need not be shown and it is to be understood that the same may be made either with or without a bottom.

Fig. 8 shows the rocker front 2|!- applied to a power drag scraper or bucket. Here the pulling line is indicated by I" and the hoisting line, by III.

In Fig. 9, the rocker front Illis shown applied to a power plow scraper and again ill indicates the pulling line and 8|. the hoisting line.

In Fig. 10, I have shown a slack line cableway excavator bucket with a rocker front Iii. In this device. the pulling or loading line is indicated 40 by III. III, Ill indicate the hoisting lines.

In Fig. 11, I have shown a hoodless drag line Page bucket with a rocker front III applied thereto. ill indicates the pulling line or loading line. The holding line is indicated by I2. and the lifting line, by I", the latter being connected to the bucket by the bridle chains III in the usual manner. The bucket shown in Fig. 11 is diiferent from the bucket shown in Figs. 1 to 6, inclusive, principally in not having an arch or hood. It is to be understood, therefore, that'there are two holding lines 520, one attached to each side of the bucket, instead of a single line 20 attached to the center of the arch, as shown in the device of Figs. 1 to 6.

as It is to be noted, also, that the front of the bucket is relatively heavy with respect to the back when the bucket is empty. To this end, the forward part of the bucket may be weighted. For example, the arch I. may furnish such weight. on This construction moves the center of gravity of the bucket forwardly somewhat so that after the bucket rolls back into digging position, as shown in Fig. 3. the relatively heavy forward end will still keep the bucket (when empty) tilted fors5 wardly somewhat so that it will readily dig down into the ground and take a load when pulled forward. After the bucket gets its load, the center of gravity will be shifted backwardly somewhat so that there will not be so much tendency for the bucket to dip forwardly and spill the load. Of

course, the tension on the pulling line l1 and the holding line 2| will ing of the load.

has taken its has taken its load.

- on its teeth until it has taken tachment of the'endsof the loading line lying 7.0

bucket is in its horizontal o h,

assistinpreventingthespilb' I As stated above Fig.1 shows the position occupied by the bucket when it strikes the ground 23 preparatory to taking the load. When dragged forwardly from such position it will assume the positions in Figs. scribed above. Further pulling. will cause the bucket to take its load. In other words, after the bucket is in the position shown in Fig. 2 and when dragged forwardly from such position, it'

will rock backwardly only to digging position on its teeth as shown in Figs. 3 and 4. In other words, when the loading or hauling line I1 is tightened after the bucket is in the position shown in Mix}, it will not rock backwardly all the way to rest upon its bottom II and then come up into digging position on its teeth; but from the position resting on its upper forward end and its teeth as forwardly from such position by tension on the loading or hauling line I! it will rock backward- 1y from such position of Fig. 2 only to digging position on its teeth. Of course, after the bucket II. The positions and'movemen'ts of the bucket ing and balancing of the bucket. N While I have shown nddescribed certain bodlments of my invention, it is to be understood Changes, therefore, in theconstruction-jand arrangement may be made without departing from just described are accomplished by properweight- 2, 3 and! in sequence as de- I 1 shown in Fig. 2 and'when dragged I load it may settle back. on its bottom the spirit and scope 'of the invention'as disclosed in the appended claims, in which itis my invention to claim all novelty inherentin' my m q v ,1 i

Permissible. inyiew of the o 1 V as broadly as art What Iv regard as new. Letters Patent. is:

1. A bucket of the character described, provided with cutting teeth. said bucket being so shaped that it will rest in equilibrium on its upper and desiretosecure by forward end and its teeth with a preponderance teeth when so resting, and 1 so weighted and balanced that when dragged forwardly from such podtion it will rock backward-"- position on its it of its weight on the only t ss ng 2. A bucket of the character; .desc'aribecl. pro vided with cutting teeth, "said .b'ucket being" so shaped that it 'will rest in 'equilibriuinbn its upper forward end and its teethtwith a preponderance of its vweight on the teeth and the ends of the loading line where attached to the bucket ground level .when so resting, said bucket being so weighte'd and balanced that its teeth until a has taken its'load.

a. a bucket of the character'YdescribedQprovided with cutting teeth, .saidbucke't" .being so shaped that it will rest m equilibrium; on. its upper forward end and its teeth with a preponderance of its weight on the teeth and the-ends of the loading line where attached'to thebucket r substantially at the ground level 'when-so res'ting, said bucket being so weighted and balanced that when dragged forwardly from such position it will rock backwardly only to digging-position above and substantially in front of thelcutting'f teeth when the tion. 7 ,7

Jomryw. rags:

its load, said; at-

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