US193172A - Improvement in dredge-buckets - Google Patents

Improvement in dredge-buckets Download PDF

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US193172A
US193172A US193172DA US193172A US 193172 A US193172 A US 193172A US 193172D A US193172D A US 193172DA US 193172 A US193172 A US 193172A
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Prior art keywords
buckets
dredge
lever
improvement
chain
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/12—Grabs actuated by two or more ropes

Definitions

  • Figure 1 is aside elevation in section of my improved apparatus, showing the dredgebuckets closed.
  • Fig. 2 is asiinilar view, representing the buckets open.
  • Fig. 3 is a side elevation.
  • the object of my invention is to provide a device for operating dredge buckets and grapples by means of levers and connecting-rods, and to dispense with the usual Windlass and other objectionable devices.
  • the branches of the lever G are nearly triangular in form,and to them connecting-rods c are pivoted, which are also pivoted to the sides of the part A of the dredge-bucket.
  • a plate, E is attached, by means of the bolt 01, and is separated from the lever by a washer having a thickness a little greater than that of the connecting-rods c.
  • This plate is further secured by the bolt that forms thepivotof the rod 0, and it swings on the bar a with the lever O.
  • a connectingrod, 6, is pivoted to the lever G, and also to the part A of the bucket.
  • This arrangement of the lever and connect ing-rod forms a pair of toggle-joints for each half of the bucket, which are capable of forcing them together against great resistance.
  • a roller, F is journaled in the upper part of the frame for guiding the chains that 0perate the buckets.
  • a chain, G is attached to the sheave f, and winds partly around it when the buckets are closed, and extends upward to the crane that supports the buckets, and a chain, H, is attached to the upper end of the lever O, and passes under the. roller F and upward to the crane before mentioned.
  • the buckets are closed by drawing the chain H, and are opened by drawing the chain G; and the chain H is mainly used in raising the buckets, while the chain G is employed to lower them.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stringed Musical Instruments (AREA)

Description

J. McSPIRIT. 'DREDGE-B'UCKET.
No. 193,172. Patented July 17, 1877 N-PETERS. FHOTOLITHOGRAPHER. WASHINGTON a c.
UNITED STATES PATENT OFFICE.
JAMES MOSPIRIT, OF JERSEY CITY, NEW JERSEY.
IMPROVEMENT IN DREDGE-BUCKETS.
Specification forming part of Letters Patent No. 193, 172, dated July 17, 1877 application filed June 4, 1877.
To all whom it may concern:
Be it known that 1, JAMES MOSPIRIT, of Jersey City, in the county of Hudson and State of New Jersey, have invented a new and useful Improvement in Operating Dredge Buckets and Grapples, of which the following is a specification:
Figure 1 is aside elevation in section of my improved apparatus, showing the dredgebuckets closed. Fig. 2 is asiinilar view, representing the buckets open. Fig. 3 is a side elevation.
Similar letters of reference indicate corresponding parts.
The object of my invention is to provide a device for operating dredge buckets and grapples by means of levers and connecting-rods, and to dispense with the usual Windlass and other objectionable devices.
In the drawings, A A-are halves of the dredge-buckets, of the usual form, which are hinged to the frame B and to each other, and (J is a forked lever which turns on the crossbar a of the frame B, and is provided with the cross-bar D, upon which is placedasheave,
which is prevented from turning by arms I), that are attached to it and t0 the bar a.
The branches of the lever G are nearly triangular in form,and to them connecting-rods c are pivoted, which are also pivoted to the sides of the part A of the dredge-bucket.
To each of the branches of the lever O a plate, E, is attached, by means of the bolt 01, and is separated from the lever by a washer having a thickness a little greater than that of the connecting-rods c.
This plate is further secured by the bolt that forms thepivotof the rod 0, and it swings on the bar a with the lever O. A connectingrod, 6, is pivoted to the lever G, and also to the part A of the bucket.
This arrangement of the lever and connect ing-rod forms a pair of toggle-joints for each half of the bucket, which are capable of forcing them together against great resistance.
A roller, F, is journaled in the upper part of the frame for guiding the chains that 0perate the buckets.
A chain, G, is attached to the sheave f, and winds partly around it when the buckets are closed, and extends upward to the crane that supports the buckets, and a chain, H, is attached to the upper end of the lever O, and passes under the. roller F and upward to the crane before mentioned.
The buckets are closed by drawing the chain H, and are opened by drawing the chain G; and the chain H is mainly used in raising the buckets, while the chain G is employed to lower them.
,It is obvious that the levers and devices described in connection with dredge-buckets may be employed with equal advantage to operate grapples.
Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- The combination of pivoted dredge-bucket halves A A, operating chains G H, rods 0 0, plates E, and lever U, as shown and described, for the purpose specified.
, JAMES MGSPIRIT.
Witnesses G. SEDGWICK, ALEX. F. ROBERTS.
US193172D Improvement in dredge-buckets Expired - Lifetime US193172A (en)

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