GB242471A - Improvements in transporter cranes and in grabs for use in connection therewith - Google Patents
Improvements in transporter cranes and in grabs for use in connection therewithInfo
- Publication number
- GB242471A GB242471A GB3027824A GB3027824A GB242471A GB 242471 A GB242471 A GB 242471A GB 3027824 A GB3027824 A GB 3027824A GB 3027824 A GB3027824 A GB 3027824A GB 242471 A GB242471 A GB 242471A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grab
- rod
- depressed
- pins
- catch
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
- G01F3/02—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement
- G01F3/04—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls
- G01F3/14—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising reciprocating pistons, e.g. reciprocating in a rotating body
- G01F3/16—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising reciprocating pistons, e.g. reciprocating in a rotating body in stationary cylinders
- G01F3/18—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising reciprocating pistons, e.g. reciprocating in a rotating body in stationary cylinders involving two or more cylinders
-
- 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
- B66C3/06—Grabs actuated by a single rope or chain
-
- 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
- B66C3/20—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 mounted on, or guided by, jibs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Transmission Devices (AREA)
Abstract
242,471. Barnard, D. J. Dec. 16, 1924. Grab-buckets.-Relates to a grab for use with a transporter crane, supported directly from the trolly during traversing and opening, and operated by a single electric motor for traversing, opening and closing. The grab is suspended from the trolly 1 by ropes 30, and is opened and closed by ropes 32 which support the cross-bar 16. Gravity catches 7, 8 keyed on a spindle 6 on the trolly co-operate with pins 10, 11 on the grab-head and a gravity catch 9 loose on the spindle 6 co-operates with a pin 14 connected with the cross-beam. The gravity catches 7, 8, 9 are weighted so as to fall out of engagement with the pins, but they are held in the operative position by spring-pressed rods 17, 24 except when these rods are depressed by ramp-rails 22, 29 at the outer and inner ends of the transporter beam respectively. As shown in Fig. 2, the grab is at the outer end of the beam and has been raised with the buckets closed. The rod 17 is depressed, but the rod 24 brings the catch 9 beneath the pin 14 to support the buckets. As the grab is traversed, the rod 17 is released from the ramprail 22, and the catches 7, 8 take under the pins 10, 11. At the inner end of the beam the rod 24 is depressed by the ramp-rail 29 as shown in Fig. 4, and on hauling in the rope 32 slightly, the catch 9 falls out of engagement with the pin 14 so that the grab may be opened by paying out the rope. When the open grab is traversed again to the outer end of the beam, the catch 9 returns to the operative position in readiness to engage with the pin 14 when the grab is closed, and the rod 17 is depressed so that the catches 7, 8 fall free from the pins 10, 11 when the grab is slightly raised by hauling in the ropes 30. Means may be provided whereby the ramp-rail 29 depresses both rods 17 and 24 so that the grab may be lowered before discharging.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1984352A GB742471A (en) | 1952-08-06 | 1952-08-06 | Improvements relating to rotary piston liquid meters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB242471A true GB242471A (en) | 1925-11-12 |
Family
ID=10136147
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3027824A Expired GB242471A (en) | 1952-08-06 | 1924-12-16 | Improvements in transporter cranes and in grabs for use in connection therewith |
| GB1984352A Expired GB742471A (en) | 1952-08-06 | 1952-08-06 | Improvements relating to rotary piston liquid meters |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1984352A Expired GB742471A (en) | 1952-08-06 | 1952-08-06 | Improvements relating to rotary piston liquid meters |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR605682A (en) |
| GB (2) | GB242471A (en) |
-
1924
- 1924-12-16 GB GB3027824A patent/GB242471A/en not_active Expired
-
1925
- 1925-11-04 FR FR605682D patent/FR605682A/en not_active Expired
-
1952
- 1952-08-06 GB GB1984352A patent/GB742471A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR605682A (en) | 1926-05-31 |
| GB742471A (en) | 1955-12-30 |
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