US86990A - Improved stump-extractor - Google Patents
Improved stump-extractor Download PDFInfo
- Publication number
- US86990A US86990A US86990DA US86990A US 86990 A US86990 A US 86990A US 86990D A US86990D A US 86990DA US 86990 A US86990 A US 86990A
- Authority
- US
- United States
- Prior art keywords
- wheel
- lever
- extractor
- axle
- frame
- 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
- 239000002965 rope Substances 0.000 description 2
- 101700082413 tant Proteins 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
- B30B1/20—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means driven by hand
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/15—Intermittent grip type mechanical movement
- Y10T74/1558—Grip units and features
- Y10T74/1577—Gripper mountings, lever
- Y10T74/1581—Multiple acting
- Y10T74/1582—Single ratchet or clutch
Definitions
- This invention relates to machines for extracting stumps from the ground, hoisting stones, or other heavy bodies, moving buildings, and for allsimilar purposes;
- Figure 1 is a vertical section of the machine, through theline x x of iig. 2.
- Figure 2 is a plan or top View.
- A is the axle, which is supported on a properly-constructed frame, marked ⁇ B.
- C is the wheel, provided with ratchet-teeth, as seen in the drawing.
- D D represents the lever, upon one or both, sides of the machine.
- E E represent ratchet-pawls, which are attached to the levers.
- the main feature of my invention is, removing the fulcrum of the lever from the axle to any point between the axle and the resisting weight or periphery of the wheel, so that the power of' the lever may be increased in proportion to the amount of such re.
- the wheel is made to revolve within a frame, or
- Ithis frame, G are somewhat arching
- H represents brackets or supports, for the fulcrumpins i, of the lever, upon the outside of one branch or leg of the lever ou the outside, while the inner end of the pin is supported by the frame or yoke G.
- the lever forms a crotch,V the branches or legs of which pass inward toward the axle, on each side ofthe wheel, through which legs the pins t' pass, as seen in the, drawing.
- the pawls E are attached to the crotchesof the levers, by pins or bolts, as seen at k.
- the ratehets are so arranged that one lever, D', operates the wheel by bearing down, and the other, by lifting up.
- m represents a rope or chain, which is attached to the axle and to the object to be raised or moved.
- the fnlorum of the lever may be placed at any point desired between the axle and the periphery of the wheel, and voi" course the power applied will depend upon the purchase thus obtained, and the length of the levers under a given force.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Description
tant
@sind n. J. MCCEEA or BETHLEHEM, NEW JERSEY.
Leners Patent No. 86,990, dated Femina/ry 16, 1869.
IMPROVE!) STUIVIP-EXTRACTOR.
The Schedule referred to in these Letters Patent and making part of the mme.
To all whom 'it may concern Be it known that I, A. J. MCGEEA, of Bethlehem, in the county of Hunterdon, and State of New Jersey, have invented a new and improved Stump-Extractor; and I do hereby declare Athat the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use ,the saine,
reference being had to the accompanying drawings,
forming part of this specification.
This invention relates to machines for extracting stumps from the ground, hoisting stones, or other heavy bodies, moving buildings, and for allsimilar purposes; and
It consistsin the application of the mechanical princple termed the wheel and axle, the wheel being a ratchet-wheel, revolved by ratchet-pawl and lever, with adjustable fulcrum, arranged as will be hereinafter described.
Figure 1 is a vertical section of the machine, through theline x x of iig. 2.
Figure 2 is a plan or top View.
Similar letters of reference indicate like parts.
A is the axle, which is supported on a properly-constructed frame, marked` B.
C is the wheel, provided with ratchet-teeth, as seen in the drawing.
D D represents the lever, upon one or both, sides of the machine.
E E represent ratchet-pawls, which are attached to the levers.
As these machines have hitherto been constructed, the lever has been applied directly to the wheel, or if a purchase has been obtained, and the wheel revolved by the increased power thus obtained, the fulcrum'of the lever has been the axle of the machine; consequently the amount of power, or the purchase of the lever, depended upon the diameter of theV wheel.
The main feature of my invention is, removing the fulcrum of the lever from the axle to any point between the axle and the resisting weight or periphery of the wheel, so that the power of' the lever may be increased in proportion to the amount of such re.
moval.
The wheel is made to revolve within a frame, or
yoke, G, which is connected with and supported by the frame at each end.
The sides of Ithis frame, G, are somewhat arching,
`so that 'they pass over the axle, as seen in iig. 1.
H represents brackets or supports, for the fulcrumpins i, of the lever, upon the outside of one branch or leg of the lever ou the outside, while the inner end of the pin is supported by the frame or yoke G.
It will be seen that the lever forms a crotch,V the branches or legs of which pass inward toward the axle, on each side ofthe wheel, through which legs the pins t' pass, as seen in the, drawing.
J represents theselegs.
The pawls E are attached to the crotchesof the levers, by pins or bolts, as seen at k.
n this examplel of my invention, two levers, one on each side of the wheel, are arranged so that the inachine may be operated from both sides simultaneously.
The ratehets are so arranged that one lever, D', operates the wheel by bearing down, and the other, by lifting up.
Tothe lever D, on the under side, there is attached by a hinge, a holding-pawl, E', which engages with the ratchet-teeth of the wheel, and prevents the wheel from turning back in the operation of lifting. rlhis pawl is held to the wheel by a spiral spring, marked L.
m represents a rope or chain, which is attached to the axle and to the object to be raised or moved.
The fnlorum of the lever may be placed at any point desired between the axle and the periphery of the wheel, and voi" course the power applied will depend upon the purchase thus obtained, and the length of the levers under a given force.
Having thus described my invention,
I claim as new, and desire to secure by Letters Patentl A stump-extractor, consisting of the parts G and H, levers D D', pawls E and E', spring L, and frame, 'arranged substantially as described.
The above specification of my invention signed by me, this 13th day of August, 1868.
Witnesses: A. J. MCUREA. FRANK BLoo'KLEY,
ALEx.1F. Renners.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US86990A true US86990A (en) | 1869-02-16 |
Family
ID=2156475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US86990D Expired - Lifetime US86990A (en) | Improved stump-extractor |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US86990A (en) |
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0
- US US86990D patent/US86990A/en not_active Expired - Lifetime
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