US4731A - Stump-extractor - Google Patents

Stump-extractor Download PDF

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Publication number
US4731A
US4731A US4731DA US4731A US 4731 A US4731 A US 4731A US 4731D A US4731D A US 4731DA US 4731 A US4731 A US 4731A
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Prior art keywords
lever
stump
extractor
levers
standards
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated

Definitions

  • my invention consists in the combination of levers, so arranged as t0 divide the -downward pressure onto two fulcrums instead of one, to shorten the levers and increase their effect While the whole apparatus is made portable and can be conveniently transferred from one point to another.
  • rlhe construction is as follows: From abase (a) formed of plank two standards rise perpendicularly between which and near the bottom a braced lever (c) is laced having its fulcrum formed by a bo t (d) that passes through it and the standards. At a suitable distance above the lever (o) another lever (e) of similar construction is located, but this last named lever is made longer so that its short arm (6) projects some distance beyond lever (c), (the fulcrum of lever (e) is at (f) in the standards).

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Toys (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Description

UNTTED sTATEs PATENT oEEIoE.
JOHN R. REMINGTON, OFJLOWNDES COUNTY, ALABAMA.
sTUivrP-EXTRACTOR.
Specification of Letters Patent No. 4,731, dated September 3, 1846.
T0 all whom t may concern.'
Be it known that I, JOHN R. REMINGTON, of Lowndes county, in the State of Alabama, have invented a new and useful Improvement in Machines for Extracting Stumps, and that the following is a full, clear, and eXact description of thel principle or character which distinguishes it from all other things before known, and of the manner of making, constructing, or using the same, reference being had to the accompanying drawing, making part of this specification, which is an isometrical view of the implement in operation.
The nature of my invention consists in the combination of levers, so arranged as t0 divide the -downward pressure onto two fulcrums instead of one, to shorten the levers and increase their effect While the whole apparatus is made portable and can be conveniently transferred from one point to another.
rlhe construction is as follows: From abase (a) formed of plank two standards rise perpendicularly between which and near the bottom a braced lever (c) is laced having its fulcrum formed by a bo t (d) that passes through it and the standards. At a suitable distance above the lever (o) another lever (e) of similar construction is located, but this last named lever is made longer so that its short arm (6) projects some distance beyond lever (c), (the fulcrum of lever (e) is at (f) in the standards). Near the end of the long arm of lever (e) two parallel pieces (g) of wood project downward on each side of the lever (c) below; these pieces (g) are not placed exactly opposite each other, and each has a row of holes in it,-they are so arranged that a handspike (it) can be placed in the holes made in either without interfering with the other, as clearly represented in the drawing; these are for the purpose of forcthe standard (b) and when the short arm of said lever and that of lever (c) are placed under the stump or in notches cut therein and in the position shown in the drawing by forcing the long arms of levers andA (e) apart the stump will be drawn Out of the ground. The action of the lever (e) being opposed to the lever (c) which bears down on the standards much of the downward pressure is transferred from thence to the other side and by this combination a more effect-ive and portable apparatus is made.
Having thus fully described my improvement, what I claim as my invention and desire to secure by Letters Patent is- The combination of levers as herein described, constructed and operating substantially in the manner and for the purpose herein set forth.
JOHN R. REMINGTON.
Vitnesses:
ROBERT BEALE, HENRY JENKINS.
US4731D Stump-extractor Expired - Lifetime US4731A (en)

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US4731A true US4731A (en) 1846-09-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050060204A1 (en) * 2003-09-12 2005-03-17 Jurgen Prange Systems and methods for automated transactions processing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050060204A1 (en) * 2003-09-12 2005-03-17 Jurgen Prange Systems and methods for automated transactions processing

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