US838914A - Ejector for excavator-dippers. - Google Patents

Ejector for excavator-dippers. Download PDF

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Publication number
US838914A
US838914A US31442306A US1906314423A US838914A US 838914 A US838914 A US 838914A US 31442306 A US31442306 A US 31442306A US 1906314423 A US1906314423 A US 1906314423A US 838914 A US838914 A US 838914A
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United States
Prior art keywords
dipper
ejector
boom
excavator
dippers
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US31442306A
Inventor
Charles Strom
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American Hoist and Derrick Co
Original Assignee
American Hoist and Derrick Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Hoist and Derrick Co filed Critical American Hoist and Derrick Co
Priority to US31442306A priority Critical patent/US838914A/en
Application granted granted Critical
Publication of US838914A publication Critical patent/US838914A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/407—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with ejecting or other unloading device

Definitions

  • This invention relates to improvements in devices designed for ejecting material from the dipper of a steam shovel or excavator.
  • the present invention is designed to provide a simple and effective means for ejecting the material from the dipper if it fails to fall out of its own weight.
  • the invention consists generally in an excavator provided with an ejector bar or plunger supported in the path of movement of the dipper, so that by raising the dipper the material is brought into contact with the ejector and is thereby forced out through the open end of the dipper.
  • Figure 1 is an elevation of a steam-shovel embodying my invention.
  • Fig. 2 is a side elevation on an enlarged scale, showing the end of theboom, the dipper, and the ejector.
  • Fig. 3 is a similar view showing the trap-door or bottom of the dipper open and the ejector in contact with the material in the dipper, a portion of the wall of the dipper being broken away.
  • 2 represents the platform or car of a steam-shovel embodying my invention.
  • the dipper 6 represents the boom, which is pivoted to the platform 3 and has pivoted to it the dipper-arm 7, carrying the dipper 8, which is of suitable form to dip or scoop up a load of material.
  • This dipper is provided with a trapdoor or hinged bottom 9. Suitable means are also provided for releasing the door, said means being under control of the operator stationed upon the platform 3.
  • the dipper is provided with a pivoted bail 10, carrying a sheave or pulley 11, and a cable 12, which has one end connected to the boom, passes around the pulley 11 and around a pulley 13 on the end of the boom, and to suitable operating means upon the platform 3.
  • a downwardly-projecting ejector-bar 14 having preferably a plunger head or face 15.
  • This bar is secured rigidly to the boom, and a suitable brace 16 is preferably provided, which is connected to said bar and also to the boom.
  • This bar is arranged in the path of movement of said dipper, so that when the tra -door 9 is opened, as shown in Fig. 3 of the rawings, if the material in the dipper sticks therein and does not fall out the dipper may be raised, so as to cause it to telescope upon the bar, (see Fig. 3,) thereby forcing any material that sticks in the dipper out through the open bottom thereof.

Description

PATENTED DEC. 18, 1906.
0. STROM. EJBGTOR FOR EXOAVATOR DIPPBRS.
APPLIQATION FILED APR.30. 1906.
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PATENTED DEO.'18, 1906.
r 0. STROM. EJBOTOR FOR EXGAVATOR DIPPERS.
APPLICATION FILED. APR. 30.1906.
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f/AS 1977'0/7/8575 THE NORRIS PETERS ca, wAsmmzro UNITED STATES PATENT oFFIon.
CHARLES STROM, OF ST. PAUL, MINNESOTA, ASSIGNOR TO AMERICAN HOIST & DERRICK (30., OF ST. PAUL, MINNESOTA, A CORPORATION.
are. 838,914.
Specification of Letters Patent.
Patented Dec. 18, 1906.
Application filed April 30, 1906. Serial No. 314,423-
ToaZZ whom it may concern:
Be it known that I, CHARLES STnoM, of St. Paul, county of Ramsey, State of Minnesota, have invented certain new and useful Improvements in Ejectors for Excavator-Dippers, of which the following is a specification.
This invention relates to improvements in devices designed for ejecting material from the dipper of a steam shovel or excavator.
It frequently occurs when using a device of this kind for excavating mud or clay that the material will bridge across and stick in the dipper when the bottom is opened for the purpose of emptying the dipper.
The present invention is designed to provide a simple and effective means for ejecting the material from the dipper if it fails to fall out of its own weight.
The invention consists generally in an excavator provided with an ejector bar or plunger supported in the path of movement of the dipper, so that by raising the dipper the material is brought into contact with the ejector and is thereby forced out through the open end of the dipper.
In the accompanying drawings, forming part of this specification, Figure 1 is an elevation of a steam-shovel embodying my invention. Fig. 2 is a side elevation on an enlarged scale, showing the end of theboom, the dipper, and the ejector. Fig. 3 is a similar view showing the trap-door or bottom of the dipper open and the ejector in contact with the material in the dipper, a portion of the wall of the dipper being broken away.
In the drawings, 2 represents the platform or car of a steam-shovel embodying my invention.
3 represents the turn-table, carrying the engine 4, boiler 5, and the mechanism for raising and lowering the boom and'operating the dipper.
6 represents the boom, which is pivoted to the platform 3 and has pivoted to it the dipper-arm 7, carrying the dipper 8, which is of suitable form to dip or scoop up a load of material. This dipper is provided with a trapdoor or hinged bottom 9. Suitable means are also provided for releasing the door, said means being under control of the operator stationed upon the platform 3. The dipper is provided with a pivoted bail 10, carrying a sheave or pulley 11, and a cable 12, which has one end connected to the boom, passes around the pulley 11 and around a pulley 13 on the end of the boom, and to suitable operating means upon the platform 3.
I provide upon the boom 6, preferably at the end thereof, a downwardly-projecting ejector-bar 14, having preferably a plunger head or face 15. This bar is secured rigidly to the boom, and a suitable brace 16 is preferably provided, which is connected to said bar and also to the boom. This bar is arranged in the path of movement of said dipper, so that when the tra -door 9 is opened, as shown in Fig. 3 of the rawings, if the material in the dipper sticks therein and does not fall out the dipper may be raised, so as to cause it to telescope upon the bar, (see Fig. 3,) thereby forcing any material that sticks in the dipper out through the open bottom thereof.
I do not confine myself to any particular size or form of the ejector or the means for supporting the same upon the boom. These features may be varied in many particulars without departing from my invention.
I claim as my invention 1. The combination in a device of the class described, with a boom, and a swinging dipper having a hinged bottom, of an ejector-bar secured to and projecting downwardly from said boom in the path of movement of said dipper, for the purpose specified.
2. The combination, with the boom, the arm pivoted thereto and carrying at its end a dipper having an open top and a hinged bottom, and means for raising and lowering said arm and dipper, of an ejector-bar secured to said boom and projecting downwardly therefrom.
In witness whereof I have hereunto set my hand this 24th day of April, 1906.
CHAS. STROM.
Witnesses:
R. T. REILLY, R. S. GAIsFoRn.
US31442306A 1906-04-30 1906-04-30 Ejector for excavator-dippers. Expired - Lifetime US838914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US31442306A US838914A (en) 1906-04-30 1906-04-30 Ejector for excavator-dippers.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31442306A US838914A (en) 1906-04-30 1906-04-30 Ejector for excavator-dippers.

Publications (1)

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US838914A true US838914A (en) 1906-12-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150218774A1 (en) * 2011-05-02 2015-08-06 Harnischfeger Technologies, Inc. Straight taper dipper

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150218774A1 (en) * 2011-05-02 2015-08-06 Harnischfeger Technologies, Inc. Straight taper dipper
US10519621B2 (en) * 2011-05-02 2019-12-31 Joy Global Surface Mining Inc Straight taper dipper
US10934682B2 (en) 2011-05-02 2021-03-02 Joy Global Surface Mining Inc Straight taper dipper

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