US131742A - Improvement in boom jacks or elevators - Google Patents
Improvement in boom jacks or elevators Download PDFInfo
- Publication number
- US131742A US131742A US131742DA US131742A US 131742 A US131742 A US 131742A US 131742D A US131742D A US 131742DA US 131742 A US131742 A US 131742A
- Authority
- US
- United States
- Prior art keywords
- boom
- elevators
- improvement
- carriage
- jacks
- 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
- 241000387514 Waldo Species 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H8/00—Sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing
- B63H8/20—Rigging arrangements involving masts, e.g. for windsurfing
- B63H8/22—Rigging arrangements involving masts, e.g. for windsurfing for connecting wishbones to the mast
Definitions
- the purpose of the said device is to elevate and support the boom of a navigable vessel. It consists of a Wheel-carriage, A, and a vibratory arm or notched toggle, B,- the latter being pivoted to the carriage andthe wholebeing arrangedv and constructed substantially as shown in the drawing.
- the carriage is'forined of two circular segmental-shaped side pieces, a a, arranged at a suitable distance apart and connected by two transverserings, b b.
- Two Wheels or rollers, c c, disposed between the side pieces a a, in manner as shown, are to turn freely on pins or rods d d going from one to the other of the side pieces and supported by both.
- the notched toggle B, pivoted to the carriage, as shown 'at e, is provided atits upper end with a notch, f, to receive the boom.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Description
R. BfCONDON.
Improvement in Boom-Jack or Elevator.
' NVO. 131,742. Patented Octn 1872.
T731. i' e, e l
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MM Ell/fami?. 6021620 ifo, @fd/192%- i graf/m miam/ggf ,CMQ/6MM, Q /L Nrrnn STATES PATENT OFFICE.
`'RUFUS B. GONDON, OF BELFAST, MAINE.
lMPRVEMENT IN BOOM yJACKS OR ELEVATORS.
Specification forming'partof Letters Patent YNo. 131,742, dated October 1,1872.
To all whom it may concern:
Be it known that I, BUFUS B. CONDON, of Belfast, of the county of Waldo and State of Maine, have invented a new and useful Boom Jack or Elevator; and do hereby declare the same to be fully described in the following specification and represented' in the accompanying drawing, of which- Figure l is Va bottom view; Fig. 2, a side elevation; Fig. 4, an edge view; vand Fig. 3, a
longitudinal section of it.
The purpose of the said device is to elevate and support the boom of a navigable vessel. It consists of a Wheel-carriage, A, and a vibratory arm or notched toggle, B,- the latter being pivoted to the carriage andthe wholebeing arrangedv and constructed substantially as shown in the drawing.
The carriage is'forined of two circular segmental-shaped side pieces, a a, arranged at a suitable distance apart and connected by two transverserings, b b. Two Wheels or rollers, c c, disposed between the side pieces a a, in manner as shown, are to turn freely on pins or rods d d going from one to the other of the side pieces and supported by both. The notched toggle B, pivoted to the carriage, as shown 'at e, is provided atits upper end with a notch, f, to receive the boom.
When a boom is to be raised the jack, with the toggle inclined from the vertical so as to receive the boom in the crotch or notch f, is to be moved transversely against the boom.
On continuing to press or draw the carriage forward the boom will be raised until the toggle may assume a Vertical position, in which
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US131742A true US131742A (en) | 1872-10-01 |
Family
ID=2201158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US131742D Expired - Lifetime US131742A (en) | Improvement in boom jacks or elevators |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US131742A (en) |
-
0
- US US131742D patent/US131742A/en not_active Expired - Lifetime
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