US827959A - Pulley-block. - Google Patents

Pulley-block. Download PDF

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Publication number
US827959A
US827959A US31562706A US1906315627A US827959A US 827959 A US827959 A US 827959A US 31562706 A US31562706 A US 31562706A US 1906315627 A US1906315627 A US 1906315627A US 827959 A US827959 A US 827959A
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Prior art keywords
block
flanges
parts
pulley
bolt
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US31562706A
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Fred Burge
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    • 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

Definitions

  • Figure 1 a perspective view of a pulleyblock constructed in accordance with my invention
  • Fig. 2 a plan view of the inner face of one of the two parts of which the block is composed, showing the swivel-sheave and rope in place
  • Fig. 3 a plan view of the inner face of the other portion of the block
  • Fig. 4 a transverse sectional view through the block.
  • This invention relates to an improvement in pulley-blocks, and particularly to the construction of large pulleys for use in derricks or digging-machines where the block is liable to encounter sand and gravel or other gritty substance which is liable to enter the block and not only impede the movement of the rope, but cut out the axle on which the sheave runs, the object of the invention being the construction of a block substantially closed, with the exception of the openings for the rope, and yet one which permits the parts to be readily separated when desired; and the invention consists in the construction hereinafter described, and particularly recited in the claims.
  • the part 2 is formed with sectional flanges 4, 5, and 6, while the part 3 is constructed with corresponding flanges 7, 8, and 9, the flanges 9 extending upward forming a neck 10, which incloses a swivel or other eye 11, by which the block is suspended in the usual way.
  • the flanges 4 and 5 interlock with the flanges 7 and 8, and the flanges 5 and 8 are formed with passages 12 and 13, respectively, giving clearance for a rope 14:, which passes over the sheave 15.
  • This sheave is mounted for rotation upon a bolt 15*, the head of which rests within the recess 16, formed in the outer face of the part 2, while the nut 17 of the bolt enters into a corresponding recess 18, formed in the outer faceiof the part 3, and by which bolt the parts are firmly locked in position. Owing passages in to the arrangement of the interlockingflanges additional bolts to hold the parts in position are not necessary. While I have shown only one sheave within the block, it is apparent without further illustration that two or more sheaves might be employed, as is common in pulley-blocks. block is so nearly closed that it can come in contact with sand or gravel without danger of any of the material being carried into the block by the rope.
  • the interior may be filled with lubricating material, so that the block will run without friction for a long time, thus increasing the life of the sheave or the bolt on which it turns.
  • a pulley-block formed in two parts each part formed with flanges, the flanges of the two parts interlocking, two of the flanges formed with passages for a rope, a sheave mounted between said plates upon a bolt which bolt serves to unite the parts of the block, substantially as described.
  • a pulley-block formed in two parts each part formed with similar flanges adapted to interlock with each other, two of the flanges forming a neck, an eye within said neck, ropetwo of the flanges, a sheave mounted between the parts of the block, and means for holding the two parts together, substantially as described.
  • a pulley-block formed in two parts each part formed with similar flanges adapted to interlock with each other, two of the flanges forming a neck, an eye within said neck, ropepassages in two of the flanges, a bolt connecting the two parts, the outer faces of which are recessed to receive the head and nut of said bolt, and a sheave mounted on said bolt between the said parts, substantially as described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Description

N0- 827,959. PATENTED AUG. 7, 1906.
' P. BURGE- PU'LLEY BLOCK.
APPLICATION FILED MAY 7,1906.
THE NORRIS PETERS co., wasnnmrau, 0. c4
FRED BURGE, OF NEW HAVEN, CONNECTICUT.
PULLEY-BLOCK.
Specification of Letters Patent.
Patented Aug. 7, 1906.
Application filed May '7, 1906. Serial No. 315,627.
To all whom it may concern:
Be it known that I, FRED BURGE, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Pulley-Blocks; and I do hereby declare the following, when taken in connection with the accompanying drawings and the numerals of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-
Figure 1, a perspective view of a pulleyblock constructed in accordance with my invention; Fig. 2, a plan view of the inner face of one of the two parts of which the block is composed, showing the swivel-sheave and rope in place; Fig. 3, a plan view of the inner face of the other portion of the block; Fig. 4, a transverse sectional view through the block.
This invention relates to an improvement in pulley-blocks, and particularly to the construction of large pulleys for use in derricks or digging-machines where the block is liable to encounter sand and gravel or other gritty substance which is liable to enter the block and not only impede the movement of the rope, but cut out the axle on which the sheave runs, the object of the invention being the construction of a block substantially closed, with the exception of the openings for the rope, and yet one which permits the parts to be readily separated when desired; and the invention consists in the construction hereinafter described, and particularly recited in the claims.
In carrying out my invention I construct the block in two similar pieces 2 and 3. The part 2 is formed with sectional flanges 4, 5, and 6, while the part 3 is constructed with corresponding flanges 7, 8, and 9, the flanges 9 extending upward forming a neck 10, which incloses a swivel or other eye 11, by which the block is suspended in the usual way. The flanges 4 and 5 interlock with the flanges 7 and 8, and the flanges 5 and 8 are formed with passages 12 and 13, respectively, giving clearance for a rope 14:, which passes over the sheave 15. This sheave is mounted for rotation upon a bolt 15*, the head of which rests within the recess 16, formed in the outer face of the part 2, while the nut 17 of the bolt enters into a corresponding recess 18, formed in the outer faceiof the part 3, and by which bolt the parts are firmly locked in position. Owing passages in to the arrangement of the interlockingflanges additional bolts to hold the parts in position are not necessary. While I have shown only one sheave within the block, it is apparent without further illustration that two or more sheaves might be employed, as is common in pulley-blocks. block is so nearly closed that it can come in contact with sand or gravel without danger of any of the material being carried into the block by the rope. Furthermore, as the block is so nearly closed the interior may be filled with lubricating material, so that the block will run without friction for a long time, thus increasing the life of the sheave or the bolt on which it turns. When it is necessary to replace the rope or the sheave, it is only necessary to remove the single bolt 15 to permit the parts to be separated, thus allowing a change to be made in a very short space of time.
I claim 1. A pulley-block formed in two parts each part formed with flanges, the flanges of the two parts interlocking, two of the flanges formed with passages for a rope, a sheave mounted between said plates upon a bolt which bolt serves to unite the parts of the block, substantially as described.
2. A pulley-block formed in two parts each part formed with similar flanges adapted to interlock with each other, two of the flanges forming a neck, an eye within said neck, ropetwo of the flanges, a sheave mounted between the parts of the block, and means for holding the two parts together, substantially as described.
3. A pulley-block formed in two parts each part formed with similar flanges adapted to interlock with each other, two of the flanges forming a neck, an eye within said neck, ropepassages in two of the flanges, a bolt connecting the two parts, the outer faces of which are recessed to receive the head and nut of said bolt, and a sheave mounted on said bolt between the said parts, substantially as described.
In testimony whereof I have signed this specification in the presence of two subscribing witnesses.
\ FRED BURGE.
Witnesses:
A. R. BEEBE, J. F. D. MOINTOSH.
By this construction the
US31562706A 1906-05-07 1906-05-07 Pulley-block. Expired - Lifetime US827959A (en)

Priority Applications (1)

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US31562706A US827959A (en) 1906-05-07 1906-05-07 Pulley-block.

Applications Claiming Priority (1)

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US31562706A US827959A (en) 1906-05-07 1906-05-07 Pulley-block.

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US827959A true US827959A (en) 1906-08-07

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