GB190709351A - Improvements in and relating to Safety Air Brake Mechanism for Lifts or Elevators. - Google Patents
Improvements in and relating to Safety Air Brake Mechanism for Lifts or Elevators.Info
- Publication number
- GB190709351A GB190709351A GB190709351DA GB190709351A GB 190709351 A GB190709351 A GB 190709351A GB 190709351D A GB190709351D A GB 190709351DA GB 190709351 A GB190709351 A GB 190709351A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- chamber
- cage
- brake
- air
- 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
Abstract
9351. Small, F. E., and Latsch, T. M. April 24, 1906, [date applied for under Patents Act, 1901]. Lifts; safety suspending-apparatus.-A lift cage is provided with fluid pressure actuated brakes for arresting the cage automatically in the event of excessive speed, or by hand. Fig. 1 is a plan view of the brake mechanism, Fig. 2 a vertical section of the lift cage, and Fig. 3 a detail view of tha control valve. An auxiliary compressed-air chamber 12 on the cage is connected by flexible tubing with a fixed reservoir 8, and communicates by a pipe 13 with a valve chamber 14, the opposite side of which communicates through a three-way cock 17 with the outer ends of a cylinder 20. This cylinder contains pistons 21 which are connected by rods and toggle-links 26 to a pair of brake levers adapted to engage the cage guides. The mechanism is brought into action by opening the valve 14, which may be effected automatically by the governor 44 on excessive speed, or by a haud-rope 78. The valve 14 comprises a conical head 63 connecte by a hollow tube with a piston 67 working in a chamber 69. The hollow tube contains a rod carrying a smaller valve 61, which is first actuated by the governor or by hand. The air then passes into the upper part of the chamber 69 and releases the main valve 63. When the device has been operated, the valve 14 is closed by opening the upper part of the chamber 69 to the atmosphere, by means of a tube 75. Air is exhausted from the brake eylinder by adjusting the cock 27, which is normally held in such position as to communicate freely between the main valve 14 and the brake cylinder. A one - way valve 11<1> is provided on the flexible tubing 10 so that the chamber 12 always contains sufficient air to operate the mechanism, even if the tubing 10 should break. The governor 44 is driven by a weight and cord pulleys as shown, or in any convenient manner. [Reference has been directed under Section 7 of Patents &c. Act, 1907, to Specifications No. 10,225, A.D. 1890, No. 18,211, A.D. 1902, No. 6176, A.D. 1903, and No. 1765, A.D. 1906.]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US190709351XA | 1906-04-24 | 1906-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB190709351A true GB190709351A (en) | 1908-04-22 |
Family
ID=32231351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB190709351D Expired GB190709351A (en) | 1906-04-24 | 1907-04-22 | Improvements in and relating to Safety Air Brake Mechanism for Lifts or Elevators. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB190709351A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2689951A (en) * | 1950-10-18 | 1954-09-21 | Kollsman Instr Corp | Altitude control-signal generator |
| US3422353A (en) * | 1964-09-11 | 1969-01-14 | Electro Mechanical Instr Co In | Electric meter having dual sensitivity provided by plural biasing means |
| US3531721A (en) * | 1967-05-16 | 1970-09-29 | Koto Kasai | Electric meter having a magnified scale |
-
1907
- 1907-04-22 GB GB190709351D patent/GB190709351A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2689951A (en) * | 1950-10-18 | 1954-09-21 | Kollsman Instr Corp | Altitude control-signal generator |
| US3422353A (en) * | 1964-09-11 | 1969-01-14 | Electro Mechanical Instr Co In | Electric meter having dual sensitivity provided by plural biasing means |
| US3531721A (en) * | 1967-05-16 | 1970-09-29 | Koto Kasai | Electric meter having a magnified scale |
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