US47471A - Improvement in pulley-blocks - Google Patents
Improvement in pulley-blocks Download PDFInfo
- Publication number
- US47471A US47471A US47471DA US47471A US 47471 A US47471 A US 47471A US 47471D A US47471D A US 47471DA US 47471 A US47471 A US 47471A
- Authority
- US
- United States
- Prior art keywords
- chain
- pulley
- rope
- sheaves
- blocks
- 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 16
- 238000010276 construction Methods 0.000 description 2
- 230000000153 supplemental Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/26—Rope, cable, or chain winding mechanisms; Capstans having several drums or barrels
Definitions
- This invention consists in providin ga pulleyblock with an eXtra or supplemental sheave of larger diameter than the others, and provided with an independent chain or rope, all arranged as hereinafter set forth7 whereby considerable power is gained in operating the block or in raising weights thereby.
- A represents aframc, in which three sheaves, a a' a, ot' different diameters, are placed and work on a common shaft.
- a chain or rope also passing around two sheaves, c c, which are h'tted in the frames O O, provided with hooks d, to which articles to be raised are attached, as clearly shown in the drawing.
- the sheave a is considerably larger in diameter than the sheave a', and around said sheave a a chain or rope, D, passes.
- This chain or rope D is merely for the purpose of turning the sheaves al a', and, in consequence of sheave a being larger in diameter than the sheaves a a', itV
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Escalators And Moving Walkways (AREA)
- Pulleys (AREA)
Description
UNITED STATES PATENT OEEIcE.
SEBASTIAN VAN HENNIK AND THOMAS ALLEN, OF NEW YORK, N. Y.
IMPROVEMENT IN PU LLEY-BLOCKS.
Specification forming part of Letters Patent No. 117.471. dated April 25, 1865.
To all whom t may concern Beit known that we, SEBASTIAN VAN HEN- NIK and THoMAs ALLEN, of the city, county, and State ot New York, have invented a new a nd Improved Pulley-Block; and we do hereby declare that the following is a full, clear, and exact description thereof', which will enal le those skilled in the art to make and use the same, refereucebein g had to theaccom nanyin g drawings, forming part of this specicition.
The drawing represents a perspective View of our invention.
This invention consists in providin ga pulleyblock with an eXtra or supplemental sheave of larger diameter than the others, and provided with an independent chain or rope, all arranged as hereinafter set forth7 whereby considerable power is gained in operating the block or in raising weights thereby.
A represents aframc, in which three sheaves, a a' a, ot' different diameters, are placed and work on a common shaft. Around the two smaller sheaves a a a chain or rope, also passing around two sheaves, c c, which are h'tted in the frames O O, provided with hooks d, to which articles to be raised are attached, as clearly shown in the drawing. The sheave a is considerably larger in diameter than the sheave a', and around said sheave a a chain or rope, D, passes. This chain or rope D is merely for the purpose of turning the sheaves al a', and, in consequence of sheave a being larger in diameter than the sheaves a a', itV
will be seen that a considerable advantage is obtained in the application of' power to the block. The chain or rope D, it will be under stood, is not connected at all with the chain or rope B. By having the two sheaves 'c c applied to or arranged with the rope or chain B and sheaves aa', as shown, one sheave, c, will be raised as the other is lowered, and hence the work ot' raising articles-such for instance as goods from a vessel-will be greatly facilitated. p
This improvement in pulley-blocks will not augment the cost of construction and it will prove to be a valuable acquisition, as a great saving is eft'eoted by it both in time and labor.
`We claim as new and desire to secure by Letters Patent- The combination, in a single pulley-block, ot' the small sheaves a a', for carrying the rope or chain B, to which the weight is attached, and thelarger sheave a", attached rigidly to the first two and carrying the rol e or chain D, to which the power is applied, al1 the parts being constructed and arranged to operate as herein specitied.
SEBASTIAN VAN HENNIK. Trios. ALLEN.
Witnesses:
M. M. LIVINGSTON,
C. L. TOPLIFF.
Publications (1)
Publication Number | Publication Date |
---|---|
US47471A true US47471A (en) | 1865-04-25 |
Family
ID=2117026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US47471D Expired - Lifetime US47471A (en) | Improvement in pulley-blocks |
Country Status (1)
Country | Link |
---|---|
US (1) | US47471A (en) |
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0
- US US47471D patent/US47471A/en not_active Expired - Lifetime
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