US173309A - Improvement in hoisting apparatus - Google Patents
Improvement in hoisting apparatus Download PDFInfo
- Publication number
- US173309A US173309A US173309DA US173309A US 173309 A US173309 A US 173309A US 173309D A US173309D A US 173309DA US 173309 A US173309 A US 173309A
- Authority
- US
- United States
- Prior art keywords
- chain
- hoisting apparatus
- wheels
- improvement
- power
- 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
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- 238000010516 chain-walking reaction Methods 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
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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
- aiZleE/Z [01/ W6 NFETERS, PHOYO-L THOGRAFHER WASHINGTON D c UNITED. STATES ANDREW B. LIPSEY, OF WEST HOBOKEN, NEW JERSEY, ASSIGNOR OF ONE- HALF HIS RIGHT TO H. A. SHERRILL, OF NEW YORK, N. Y.
- My invention relates to that class of hoisting apparatus in which the power is applied by means of an endless chain running over grooved pulleys or chain-wheels of diiferent diameters, and having teeth or stops upon the inside of the grooves, to prevent the chain from slipping, and the load from running down when no power is being applied.
- the two chain-wheels are cast, or rigidly fastened together, and revolve together, and differ from each other in circumference by the length of one link of the chain, or'on'e wheel has one less tooth or stop for the chain than the other, so that for every revolution of the chain-wheels the load is raised or lowered the length of one link of the chain.
- the chain-wheels As it is impossible for the chain-wheels to differ by less than one link, and as the less the difference. the greater the power, the only manner in which the power can be increased in the former class of inventions referred to is by increasing the diameters of the chain-wheels, and thus decreasing their proportional difference.
- the object of this invention is to provide a simple and, durable hoisting apparatus, in which the power can be indefinitelyincreased without increasing the diameters of the chainwheels, by the addition of one or more loose v pulleys for the chain to run over.
- B is a pulley running loose between the two chain-wheels.
- H is the chain by which the hoist is operated and weight supported, and which passes around the two connected chain wheels and loose pulley of the upper block, and the two loose pulleys of the lower block.
- the ends I and m are joined, forming an endless chain.
- the lower loops, connecting Z and m, are omitted in the drawing.
- I and J are hooks, which are used, respectively, to attach to any convenient point of resistance, and to the weight to be hoisted.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Description
A. B. LIPSEY.
.norswnre APPARATUS. No.173,3Q9. Patented Feb. 8, 1876.
aiZleE/Z: [01/ W6 NFETERS, PHOYO-L THOGRAFHER WASHINGTON D c UNITED. STATES ANDREW B. LIPSEY, OF WEST HOBOKEN, NEW JERSEY, ASSIGNOR OF ONE- HALF HIS RIGHT TO H. A. SHERRILL, OF NEW YORK, N. Y.
IMPROVEMENT IN HOlSTlNG APPARATUS. 1
Specification forming part of Letters Patent No. 173,309, dated February 8, 1876; application filed October 28, 1875.
To all whom it may concern:
Be it known that 1, ANDREW B. LIPSEY, of the town of West Hoboken, county of Hudson, State of New Jersey, have invented certain new and useful Improvements in Hoisting Apparatus, of which the following is a specification, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.
My invention relates to that class of hoisting apparatus in which the power is applied by means of an endless chain running over grooved pulleys or chain-wheels of diiferent diameters, and having teeth or stops upon the inside of the grooves, to prevent the chain from slipping, and the load from running down when no power is being applied.
In the former inventions of this character, such as J. J. Doyles, patented January 8,1861, the two chain-wheels are cast, or rigidly fastened together, and revolve together, and differ from each other in circumference by the length of one link of the chain, or'on'e wheel has one less tooth or stop for the chain than the other, so that for every revolution of the chain-wheels the load is raised or lowered the length of one link of the chain. As it is impossible for the chain-wheels to differ by less than one link, and as the less the difference. the greater the power, the only manner in which the power can be increased in the former class of inventions referred to is by increasing the diameters of the chain-wheels, and thus decreasing their proportional difference.
The object of this invention is to provide a simple and, durable hoisting apparatus, in which the power can be indefinitelyincreased without increasing the diameters of the chainwheels, by the addition of one or more loose v pulleys for the chain to run over.
vation of the same, without the chain; and
ing them together rigidly, or the same result may be accomplished by keying the chainwheels to a solid shaft. B is a pulley running loose between the two chain-wheels. H is the chain by which the hoist is operated and weight supported, and which passes around the two connected chain wheels and loose pulley of the upper block, and the two loose pulleys of the lower block. The ends I and m are joined, forming an endless chain. The lower loops, connecting Z and m, are omitted in the drawing. I and J are hooks, which are used, respectively, to attach to any convenient point of resistance, and to the weight to be hoisted. g
The advantages of this arrangement are, that the power can be indefinitely increased without increasing the diameters of the chainwheels by the addition of one or more loose pulleys to the upper block, and that a smaller chain can be used for supporting and raising the same weight than with an ordinary chain fall.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- The employment or use of one or more loose pulleys, in connection with two chain-wheels of different diameters, rigidly connected together on a hoisting apparatus. substantially in the manner and for the purpose specified.
' ANDREW B. LIPSEY.
Witnesses:
WM. W. MANN, H. W. SHERRILL.
Publications (1)
Publication Number | Publication Date |
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US173309A true US173309A (en) | 1876-02-08 |
Family
ID=2242716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US173309D Expired - Lifetime US173309A (en) | Improvement in hoisting apparatus |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140027692A1 (en) * | 2012-07-25 | 2014-01-30 | Vale S/A | Device for removing hoppers from rail cars |
US20140090788A1 (en) * | 2012-10-01 | 2014-04-03 | Railquip Enterprises Inc. | Vertically folding wall partition |
-
0
- US US173309D patent/US173309A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140027692A1 (en) * | 2012-07-25 | 2014-01-30 | Vale S/A | Device for removing hoppers from rail cars |
US9284170B2 (en) * | 2012-07-25 | 2016-03-15 | Vale S.A. | Device for removing hoppers from rail cars |
US20140090788A1 (en) * | 2012-10-01 | 2014-04-03 | Railquip Enterprises Inc. | Vertically folding wall partition |
US9045935B2 (en) * | 2012-10-01 | 2015-06-02 | Railquip Enterprises Inc. | Vertically folding wall partition |
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