US4731A - Stump-extractor - Google Patents
Stump-extractor Download PDFInfo
- 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
- Authority
- US
- United States
- Prior art keywords
- lever
- stump
- extractor
- levers
- standards
- Prior art date
- 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
Links
- 238000010276 construction Methods 0.000 description 4
- 101700065062 andA Proteins 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002452 interceptive Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, 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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting 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).
Landscapes
- 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.
Publications (1)
Publication Number | Publication Date |
---|---|
US4731A true US4731A (en) | 1846-09-03 |
Family
ID=2065032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US4731D Expired - Lifetime US4731A (en) | Stump-extractor |
Country Status (1)
Country | Link |
---|---|
US (1) | US4731A (en) |
Cited By (1)
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 |
-
0
- US US4731D patent/US4731A/en not_active Expired - Lifetime
Cited By (1)
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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