US191437A - Improvement in cranes - Google Patents
Improvement in cranes Download PDFInfo
- Publication number
- US191437A US191437A US191437DA US191437A US 191437 A US191437 A US 191437A US 191437D A US191437D A US 191437DA US 191437 A US191437 A US 191437A
- Authority
- US
- United States
- Prior art keywords
- rope
- cranes
- improvement
- pawl
- pulley
- 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 18
- 230000003028 elevating Effects 0.000 description 8
- 230000000875 corresponding Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/10—Applications of braking or detent devices
Definitions
- This invention relates to a certain improvement in cranes; and it consists of a weighted serrated pawl suspended directly above the elevating or hoisting rope pulley, and having an arm or handle provided with a rope or other suitable medium for releasing the pawl, substantially as hereinafter more fully set forth.
- A refers to a rotating upright or post, suitably braced in position by the braces or stays ac.
- B is a horizontal beam fastened to and extending outwardly from the post A, and also braced by the diagonal brace b. Upon the beam B,
- a pulley 0, around which passes the elevating or hoisting rope d.
- a bow or frame, 6, disposed directly over the pulley 0.
- a weighted toothed pawl, O which, by its own gravity and the weight on the elevating or hoisting rope d, is caused to engage and clamp said rope down upon the pulley c, to hold the block of ice or other weight in an elevated or suspended position.
- a cord or rope, 9 extending down within convenient reach of the operator, for releasing the pawl and liberating the hoisting or elevating rope.
- the weighted serrated pawl 0, having the arm or handle f, provided with a cord or rope, or other suitable medium, g, for releasing it, in combination with and suspended directly above the hoisting-rope pulley, substantially as and for the purpose set forth.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Farming Of Fish And Shellfish (AREA)
Description
B. JONES.
CRANE.
No. 191,437. Patented May 29,1877.
, UNITED STATES PATENT QFFIoE.
BYRON JONES, OF KENDALLVILLE, INDIANA, ASSIGNOR OF ONE-HALF HIS RIGHT TO THOS. L. GRAVES, OF SAME PLACE.
IMPROVEMENT IN CRANES.
Specification forming part of Letters Patent No. 191,437. dated May 29, 1877; application filed May 3, 1877.
To all whom it may concern:
Be it known that I, BYRON JONES, of Kendallville, in the county of Noble and State of Indiana, have invented certain new and useful Improvements in Cranes; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon,which form a part of this specification, and in which- Fignre l is a perspective view of my improved crane, and Fig. 2 is a detached sectional view thereof.
Corresponding parts in the two figures are denoted by like letters.
This invention relates to a certain improvement in cranes; and it consists of a weighted serrated pawl suspended directly above the elevating or hoisting rope pulley, and having an arm or handle provided with a rope or other suitable medium for releasing the pawl, substantially as hereinafter more fully set forth.
In the annexed drawing, A refers to a rotating upright or post, suitably braced in position by the braces or stays ac. B is a horizontal beam fastened to and extending outwardly from the post A, and also braced by the diagonal brace b. Upon the beam B,
at its extreme outer end, is a pulley, 0, around which passes the elevating or hoisting rope d. Upon the beam B is firmly fastened a bow or frame, 6, disposed directly over the pulley 0. Within this bow or frame is hung a weighted toothed pawl, O, which, by its own gravity and the weight on the elevating or hoisting rope d, is caused to engage and clamp said rope down upon the pulley c, to hold the block of ice or other weight in an elevated or suspended position. To an arm or handle, f, of the pawl O is attached a cord or rope, 9, extending down within convenient reach of the operator, for releasing the pawl and liberating the hoisting or elevating rope.
Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-
The weighted serrated pawl 0, having the arm or handle f, provided with a cord or rope, or other suitable medium, g, for releasing it, in combination with and suspended directly above the hoisting-rope pulley, substantially as and for the purpose set forth.
In testimony that I claim the foregoing as my own I hereunto affix my signature in presence of two witnesses.
BYRON JONES.
Witnesses:
THOMAS L. GRAVES, O. J. VINCENT.
Publications (1)
Publication Number | Publication Date |
---|---|
US191437A true US191437A (en) | 1877-05-29 |
Family
ID=2260844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US191437D Expired - Lifetime US191437A (en) | Improvement in cranes |
Country Status (1)
Country | Link |
---|---|
US (1) | US191437A (en) |
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0
- US US191437D patent/US191437A/en not_active Expired - Lifetime
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