US27633A - Hovey - Google Patents
Hovey Download PDFInfo
- Publication number
- US27633A US27633A US27633DA US27633A US 27633 A US27633 A US 27633A US 27633D A US27633D A US 27633DA US 27633 A US27633 A US 27633A
- Authority
- US
- United States
- Prior art keywords
- block
- blocks
- pulley
- pulleys
- rope
- 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 26
- 239000002184 metal Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 6
- 239000002023 wood Substances 0.000 description 4
- 240000001973 Ficus microcarpa Species 0.000 description 2
- 210000000088 Lip Anatomy 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000002349 favourable Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000725 suspension Substances 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
Definitions
- Fig. 2 shows a projection and recess formed on the blocks of the two upper pulleys for keeping them in a parallel line with each other, when used as represented in Fig. l.
- Fig. 3 is a side view showing one block with two sheaves or pulleys.
- my invention consists in project-ing up from the top of the fixed double pulley block.
- A. hook having an eye in its end into which is hooked a collateral block with one pulley or sheave, and over this sheave the draw or full rope is passed leading from the movable block, the fixed pulley blocks are hung up by a swivel hook, which hooks under the fixed block hook; and in conjunction with these fixed blocks is a projecting lip and recess formed, which keeps the fixed blocks in a perpendicular position and the ropes always parallel as will be hereinafter described.
- the block, A is a fixed block composed of two pulleys, which may be of wood, or metal, and grooved in the usual manner to receive the rope or cord.
- a hook, B having on its end an eye, C, into which is hooked a collateral block, D, having one sheave E.
- F is a swivel hook by which the blocks, A D, are hung up and established.
- H is a projection of the block, D, which tits into a notch or recess in block, A; this projection, H, acts in the manner of a fulcrum for the block, D, the hook being ⁇ one arm, and the pulley the other, thus by drawing down on the pull rope G, which passes over the pulley E, the lower end of the block will have a tendency to incline toward the block A, when it will be kept in an upright Xed state by the hook and eye, and the projection, H, and in this manner the ropes will be kept parallel and vertical.
- the movable block, J has two pulleys, and one end of the rope is attached to its upper end passes up and over one of the pulleys in the block, A, down again and undeil the other pulley of block, J, thence up and over the pulley in collateral block, D, as clearly shown by the drawings.
- the pull or draft rope may now be drawn from the block, D, either in a direct line with the pulleys, or in a horizontal line, still the pulley block, D, will preserve its proper position.
- the side plates are first stamped out of sheet metal strips of a suitable size and thickness either with the corners cut oil' as shown, or the quadrilateral plates may have their corners slipped off afterward. These plates are then bolted toget-her, wood or metal blocks being interposed between them to form the recesses or wards for the pulleys, and fitted up in the usual manner of making metal pulley blocks.
- the blocks thus made are more favorable to my novel plan of arranging them, as they lare longer, stronger and require less Work to construct 5 oval blocks.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Description
J'. L; I-IVEY, OF LOGKPOR'I, NEW YORK.
PULLEY-ELOGK:
Specification of Letters'Patent No. 27,633, dated March 2'?, 1860.
To all whom it may concern?! Be it known that I, J. L. I-IovEY, of Lockport, in the county of Niagara and State of New York, have invented a new and useful Improvement in Pulley-Blocks; and I do hereby declare that the following is a full, clear, and eXact description thereof, reference being had to the accompanying drawings, forming a part of this specification, in which- Figure l represents a system of pulleyblocks, hung in a peculiar manner with a rope passing through them. The front plate of each block is removed, showing one sheave in each, and their shape and the manner of securing the plates together. Fig. 2 shows a projection and recess formed on the blocks of the two upper pulleys for keeping them in a parallel line with each other, when used as represented in Fig. l. Fig. 3 is a side view showing one block with two sheaves or pulleys.
Similar letters of reference indicate corresponding parts in the three figures.
It is well known to those familiar with pulley blocks that in raising a weight with double or triple reeved blocks that the rope will pull heavier on one side than on the other of the upper, causing it to trip from a vertical or upright position creating an amount of friction, which requires far more power to raise the same heavy upright than when the upper block remains steady in its proper position and the ropes parallel. The reason of this parallel direction of the ropes being better than an oblique one is, that less power is required to sustain the same weight; and in proportion to the Obliquity of the ropes must be the increase of the power. Then there are many pulleys in the same block, and the end of the rope to which the power is applied terminates over one of the outside pulleys, that pulley always endeavors to get into a line with the center of suspension or middle of the movable pulleys from which the weight hangs.
To remedy this evil my invention consists in project-ing up from the top of the fixed double pulley block. A. hook having an eye in its end into which is hooked a collateral block with one pulley or sheave, and over this sheave the draw or full rope is passed leading from the movable block, the fixed pulley blocks are hung up by a swivel hook, which hooks under the fixed block hook; and in conjunction with these fixed blocks is a projecting lip and recess formed, which keeps the fixed blocks in a perpendicular position and the ropes always parallel as will be hereinafter described.
The blocks themselves are novel in their form and construction which renders them very strong, and gives great facility in their manufacture, as will be described.
To enable those skilled in the art to fully understand my invention I will proceed to describe its construction and operation.
The block, A, is a fixed block composed of two pulleys, which may be of wood, or metal, and grooved in the usual manner to receive the rope or cord. In the top of this block projects a hook, B, having on its end an eye, C, into which is hooked a collateral block, D, having one sheave E.
F is a swivel hook by which the blocks, A D, are hung up and established.
H is a projection of the block, D, which tits into a notch or recess in block, A; this projection, H, acts in the manner of a fulcrum for the block, D, the hook being` one arm, and the pulley the other, thus by drawing down on the pull rope G, which passes over the pulley E, the lower end of the block will have a tendency to incline toward the block A, when it will be kept in an upright Xed state by the hook and eye, and the projection, H, and in this manner the ropes will be kept parallel and vertical.
The movable block, J, has two pulleys, and one end of the rope is attached to its upper end passes up and over one of the pulleys in the block, A, down again and undeil the other pulley of block, J, thence up and over the pulley in collateral block, D, as clearly shown by the drawings. The pull or draft rope may now be drawn from the block, D, either in a direct line with the pulleys, or in a horizontal line, still the pulley block, D, will preserve its proper position.
The construction of the blocks shown by the drawings is attended with economy and rapidity and to this end, the side plates are first stamped out of sheet metal strips of a suitable size and thickness either with the corners cut oil' as shown, or the quadrilateral plates may have their corners slipped off afterward. These plates are then bolted toget-her, wood or metal blocks being interposed between them to form the recesses or wards for the pulleys, and fitted up in the usual manner of making metal pulley blocks.
The blocks thus made are more favorable to my novel plan of arranging them, as they lare longer, stronger and require less Work to construct 5 oval blocks.
them than the usual round or Having thus described my invention, what I claim, and ent, 1s:-
desire to secure by Letters Pat- The peculiar method of hanging blocks,
1o A D, both b eing suspended from one hook,
and kept in 'an upright osition b a rojection H, of the collaterali block, tllus oliviating the friction occasioned by the pulleys getting twisted out of an upright position, as above described.
J. L. HOVEY.
Witnesses:
ISAAC B. LULL', W. H. MOORE.
Publications (1)
Publication Number | Publication Date |
---|---|
US27633A true US27633A (en) | 1860-03-27 |
Family
ID=2097299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US27633D Expired - Lifetime US27633A (en) | Hovey |
Country Status (1)
Country | Link |
---|---|
US (1) | US27633A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3847108A (en) * | 1971-05-03 | 1974-11-12 | W Shimanckas | Stern drive unit with bellows enclosed reversing transmission and universal coupling steering control |
US6061933A (en) * | 1997-04-29 | 2000-05-16 | Rogge; Steven Dean | Compactor for use with backhoe method and apparatus |
-
0
- US US27633D patent/US27633A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3847108A (en) * | 1971-05-03 | 1974-11-12 | W Shimanckas | Stern drive unit with bellows enclosed reversing transmission and universal coupling steering control |
US6061933A (en) * | 1997-04-29 | 2000-05-16 | Rogge; Steven Dean | Compactor for use with backhoe method and apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN205873746U (en) | Stable hoisting machine | |
US27633A (en) | Hovey | |
US9025A (en) | And chas | |
US654001A (en) | Post-extractor. | |
CN207175292U (en) | Derrick crane raising wiring system | |
US1909528A (en) | Tractor crane | |
US801367A (en) | Hoisting mechanism. | |
US578495A (en) | Derrick | |
US598776A (en) | Pulley-block | |
CN210280652U (en) | Pouring hopper for pouring molten iron | |
CN208747469U (en) | A kind of anti-cutting self-locking suspension hook of safety | |
CN212612035U (en) | Height lifting device of bridge girder erection machine | |
US62489A (en) | Improvement in cant-hooks | |
US112214A (en) | Improvement in apparatus for lifting barrels | |
US1101595A (en) | Hoisting apparatus. | |
US84794A (en) | Improved elevator | |
US465775A (en) | Mechanism for doubling up the purchase of hoist-ropes | |
US2888150A (en) | Level luffing attachment for cranes | |
US893678A (en) | Counterbalance-hoist. | |
US476078A (en) | Tackle-block | |
US2243292A (en) | Pile driver hammer counterbalance | |
US1043323A (en) | Safety appliance for pit cages, lifts, and the like. | |
US2740537A (en) | Adjustable gin pole | |
US576316A (en) | Hoisting machinery | |
CN209872115U (en) | Regulator for marine crane sling |