US2584416A

US2584416A - Dipper

Info

Publication number: US2584416A
Application number: US84928A
Authority: US
Inventors: Samuel J Boehringer
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-04-01
Filing date: 1949-04-01
Publication date: 1952-02-05
Anticipated expiration: 1969-02-05

Description

Feb. 5, 1952 5, J BOEHRINGER 2,584,416.

DIPPER Filed April 1. 1949 2 SHEETSSHEET l I mvEm-oz 7 OQLLPL ATTORNEY Feb. 5, 1952 5, BOEHRlNGER 2,584,416

DIPPER Filed April 1, 1949 2 SHEETS-SHEET 2 6 I llVENTOR S e sv 5,4, 091% ATTOR N EY Patented Feb. 5, 1952 UNITED STATES PATENT OFFICE DIPPER Samuel J. Boehringer, Milwaukee, Wis.

Application April 1, 1949, Serial No. 84,928

1 Claim.

The invention relates to excavating clippers or buckets and more particularly to a fabricated type of bucket.

In buckets of the type above described, the front of the bucket or that side which carries the digging teeth is subjected to the greatest amount of wear, and consequently various forms of buckets have been made in which this front may, in case of wear, be removed from the remainder of the bucket and be replaced by a new front. In all of the forms of replaceable fronts for dipper buckets heretofore proposed it has been necessary to use a great quantity of rivets to connect the front to the sides of the bucket. The main object of the present invention is to provide a bucket in which the joint between the sides of the bucket and the upturned sides of the front is so formed that-only a few, three for example, rivets are necessary to hold the parts in assembled relation, and these rivets are at no time subjected to shearing strains that may be imposed on the bucket parts. More particularly according to the present invention, portions of the sides of the bucket and spaced portions of upturned sides of the front have slidably engageable angled tongue and groove connections with each other that prevent lateral slippage or separation of the parts relative to each other, and the sides also have a dead end mounting in the front portion of the front to resist endwise movement of the parts relative to each other during digging operations.

The invention further consists in the several features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings:

Fig. 1 is a perspective view of a dipper embodying the invention;

Fig. 2 is a perspective view of parts of the dipper, parts being broken away;

Fig. 3 is a side elevation view of the bucket, parts being broken away and parts being shown in section;

Fig. 4 is a plan view of the front of the bucket, parts being broken away;

Fig. 5 is a detailed vertical sectional view taken on the line 5-5 of Fig. 3;

' or other lifting device.

Fig. 6 is a detailed vertical sectional view taken 7 The present invention is concerned with the connection of the front ID to the sides ll of the dipper. The front I0 is a metal casting provided with sockets for reception of the replaceable teeth 22 which have a tapered fit in said sockets and are held against accidental displacement by cotter pins 23 in accordance with the usual practice. The front 10 has upturned or angled side portions 24, and in accordance with this invention each side portion has a longitudinally extending slot 25 open at the back 26 and extending to a dead end 27 near the mouth of the bucket. The front 28 and back portion 29 of the slot 25 are narrower in their upper portions than in their bottom portions to provide angled slots having an angled bottom 30. Between the

parts

28 and 29 the slot 25 is the same width as the angled bottom 30 of the

parts

28 and 29.

The arches l5 and I6 forming portions of the sides ll of the dipper have extensions 3|, each grooved at 32 to form in efiect a channelled end with an outwardly projecting bottom flange 33. These grooved portions 32 of the sides are adapted to slidably interlock with the

complementary slots

28 and 29 in the front when brought into register with each other. The distance of the widemouthed portion of the slot 25 between the arches l5 and 16 may be somewhat greater than the length of the extension 3| of the arch l5, so that when this extension is ahned with said portion of the slot and moved down into the same until the flanges 33 register with the bottoms 30, the front may be moved backwardly or the sides forwardly to interlock the extensions 3| with the side portions 24 of the front, as shown in Fig. 5, at which time the extension 3| of the arch l5 abuts the dead end 21 of the front. Thereafter, rivets 34 are inserted in the

alined holes

35 and 36 of the front and the side extensions and fastened in place, and then to keep out dirt from the slot 25 a quadrant 31 of tubing may be welded at its top and bottom edges to the plate l1 and front, as shown in Fig. 6. To remove the front all that is necessary is to burn off the weld for the tube 31 and burn or shear the rivets 34 and drive them out. Only three rivets on a side are necessary to hold the front to the bucket, and because of the joint described above, they are relieved of any end thrust strains that may be imparted to the bucket by impacts against the toothed front and any lateral strains tending to separate the front from the sides of the bucket or dipper..

It will, of course, be underst'0o'dthat the slot 25 may be formed with an angled bottom throughout its length, if desired, and the plate I! have an angled member 38 welded thereto,

as shown in Fig. 8, so that the front may be united with the sides by relative movement of these parts the full length of the slot, but the first described construction is lighter, and less movement of the parts to effect the connection is necessary.

It is also to be noted that by providing the slot 25 in the front 10 both the front and-rear sides of those portions of the dipper that join with the front are protected from wear, and the rivets do not have to resist racking strains,

-I desire it to be understood that this invention is not to be limited to any particular form or arrangement of parts except in so far as such limitations are included in the claim.

What I claim as my invention is:

In a dipper, the combination of a frontprovided with upturned sides having lengthwise 4 extending slots therein, and sides having lengthwise spaced portions fitting said slots and forming therewith lengthwise slidable tongue and groove connections to prevent separation of said sides and front, said slots in the front between said spaced portions being open slots of a length greater than said spaced portions to permit removal of said front from said sides on relative movementof said parts the length of one set of said spaced ortions, said front having abutments at one end of said slots engageable with the front ends of said sides to resist relative end thrust movement of said front and sides, and fastening means for holding said front and sides in assembled relation.

SAMUEL J. BOEHRINGER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,479,340 Trainor Jan. 1, 1924 1,539,863 Pemberton June 2, 1925 1,545,943 Crane July 14, 1925 1,574,444 Reynolds Feb. 23, 1926 1,728,964 Gross Sep. 24, 1929 1,945,064 Murtaugh Jan; 30, 1934 2,336,729 Harris et a1 Dec. 14, 1943 2,427,897 Burdick et a1 Sept. 23, 1947