US193982A - Improvement in clamps for hoisting monuments, pillars - Google Patents
Improvement in clamps for hoisting monuments, pillars Download PDFInfo
- Publication number
- US193982A US193982A US193982DA US193982A US 193982 A US193982 A US 193982A US 193982D A US193982D A US 193982DA US 193982 A US193982 A US 193982A
- Authority
- US
- United States
- Prior art keywords
- hoisting
- monuments
- pillars
- clamps
- improvement
- 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 4
- MFRCZYUUKMFJQJ-UHFFFAOYSA-N 1,4-dioxane-2,5-dione;1,3-dioxan-2-one Chemical compound O=C1OCCCO1.O=C1COC(=O)CO1 MFRCZYUUKMFJQJ-UHFFFAOYSA-N 0.000 description 2
- 240000002027 Ficus elastica Species 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001195 polyisoprene Polymers 0.000 description 2
- 230000002393 scratching Effects 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000003245 working Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
- B66C1/48—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces to vertical edge portions of sheets, tubes, or like thin or thin-walled articles
Definitions
- This invention consists of two plates, connected on each side by adjusting-bars work ing on eccentrics, which are operated by means of levers. It has for its object the hoisting of monuments, pillars, &c., of any shape, without defacing the surfaces by scratching or nicking. It is designed particularly for the hoisting of tapering monuments when the surfaces are highly polished, and where a rope lars, &c., would not hold without the faces being defaced.
- Figure 1 is a perspective view, showing the clamp adjusted to a tapering monument.
- Fig. 2 is a transverse section.
- a and- A represent the two plates, which may be covered with indiarubber, leather, or any other suitable material, to preserve the polish of the faces of the thing being hoisted, and also to increase the friction.
- the eccentrics are operated by means of the levers D D, which have eyes bent in the ends, into which a chain or rope, passing from one lever to the other, is hooked, and to this chain centrics just outside of the usual in hoisting pil-- the derrick-block is attached.
- the two plates are connected together by means of adjustarods E E, which fit over the ends of the cobearings.
- the clamp may be made adjustable to any sized pillar, monument, &c., that may be desired.
- This clamp differs from others heretofore used in this, that the eccentrics do not themselves bear against the monument, but act upon the plates A A, which are immovable on the surface, and there ia-therefore, in this case, no movement of parts to tend to break or mar the monument. 4
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food-Manufacturing Devices (AREA)
Description
T. MAXON. CLAMPS FOR HOISITING MONUMENTS, PILLARS, &c. "No. 193,982, PatentedAug. 7,1877] put around them,'as is UNITED. STATES PATENT OFFICE.
THOMAS MAXON, SPRINGFIELD, OHIO.
IMPROVEMENT IN CLAMPS FOR HOISTING MONUMEN TS, PILLARS, &c.'
Specification forming part of Letters Patent No. 193,982, dated August 7, 1877; application filed J mm 20, 1877.
To all whom it may concern:
Be it known that I, THOMAS MAXON, of Springfield, in the county of Clarke and State of Ohio, have invented a new and useful Improvement in Clamps for Hoisting, of which the following is a specification:
This invention consists of two plates, connected on each side by adjusting-bars work ing on eccentrics, which are operated by means of levers. It has for its object the hoisting of monuments, pillars, &c., of any shape, without defacing the surfaces by scratching or nicking. It is designed particularly for the hoisting of tapering monuments when the surfaces are highly polished, and where a rope lars, &c., would not hold without the faces being defaced.
In the annexed drawings, making a part of this specification, Figure 1 is a perspective view, showing the clamp adjusted to a tapering monument. Fig. 2 is a transverse section.
The same letters are employed in both figures in the indication of identical parts.
A and- A represent the two plates, which may be covered with indiarubber, leather, or any other suitable material, to preserve the polish of the faces of the thing being hoisted, and also to increase the friction.
On each'side of the plates are fastened cleats B B, which serve to strengthen the plates, and also form bearings in which the eccentrics G C may turn.
The eccentrics are operated by means of the levers D D, which have eyes bent in the ends, into which a chain or rope, passing from one lever to the other, is hooked, and to this chain centrics just outside of the usual in hoisting pil-- the derrick-block is attached. The two plates are connected together by means of adjustarods E E, which fit over the ends of the cobearings. By means of these rods the clamp may be made adjustable to any sized pillar, monument, &c., that may be desired.
After the plates have been adjusted, the levers then being turnedpartially down, the chain, passing from one lever to the other, is attached to the block of the hoisting-tackle, and the weight of the thing being hoisted will be' sufficient to raise the levers, and thus by means of the eccentrics cause the two plates to bind firmly against the faces of the pillar, monument, or whatever is being hoisted.
This clamp differs from others heretofore used in this, that the eccentrics do not themselves bear against the monument, but act upon the plates A A, which are immovable on the surface, and there ia-therefore, in this case, no movement of parts to tend to break or mar the monument. 4
WhatI claim as my invention, and desire to secure by LettersPatent, is-
In combination with the frictionplates A A of a clamp for hoisting, the eccentrics O G, levers D D, and adjusting-baraE E, substantially as and for the purpose set forth.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
THOMAS MAXON.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US193982A true US193982A (en) | 1877-08-07 |
Family
ID=2263388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US193982D Expired - Lifetime US193982A (en) | Improvement in clamps for hoisting monuments, pillars |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US193982A (en) |
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0
- US US193982D patent/US193982A/en not_active Expired - Lifetime
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