US132112A - Improvement in safety devices for elevators - Google Patents
Improvement in safety devices for elevators Download PDFInfo
- Publication number
- US132112A US132112A US132112DA US132112A US 132112 A US132112 A US 132112A US 132112D A US132112D A US 132112DA US 132112 A US132112 A US 132112A
- Authority
- US
- United States
- Prior art keywords
- elevators
- improvement
- safety devices
- frames
- levers
- 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
- 230000000881 depressing effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/20—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of rotatable eccentrically-mounted members
Definitions
- the object of my invention is to provide an improved safety attachment for elevators and for the cages used in hoisting works; and it consists in a novel arrangement of a grip,
- FIG. 1 is a front elevation of my safety device, and Fig. 2 shows one of the levers.
- a A are the side frames between which the elevator B moves and'is guided.
- O O are two lever-arms pivoted at the points D to the frame B and having their outer ends bent around as at a, Fig. 2, so as to move outside the frames A. If preferred these ends may extend entirely around the frames A, or the levers C may be duplicated so that there will be one set upon each side. The inner ends of the levers extend beyond the center, so that they both pass through the link G.
- the hoistingrope is secured to the upper end of the link G, and when the weight of the elevator is sustained by the ropethe link, which slides vertically, will be drawn close up to the cross-bar E, thus raising the inner ends of the levers O and depressing the outer ends, so that the lugs move freely and out of contact with the frames A.
- a stout spring, F is secured to the crossbar E, so that it acts directly on the inner ends of the arms 0 toforce them down instantly if the rope breaks, and the lugs at the outer ends will thus be made to bind firmly against the frames A and thus arrest the cage or elevator and prevent its falling. If preferred, a
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Types And Forms Of Lifts (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Description
T STEBINS.
vImprovement in Safety Device for Elevators.
No, 132,112, Patented0c't.8,1872.
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TIMOTHY STEBINS OF SAN FRANCISCO, CALIFORNIA.
IMPROVEMENT IN SAFETY DEVICES FOR ELEVATORS,
Specification forming part of Letters Patent No. 132,112, dated October 8, 1872.
To all whom it may concern:
Be it known that I, TIMOTHY STEBINs, of San Francisco city and county, State of California, have invented a Safety Device for Gages and Elevators; and I do hereby declare the following, description and accompanying drawing are sufficient to enable any person skilled in the art or science to which it most nearly appertains to make and use my said invention without further invention or experiment.
The object of my invention is to provide an improved safety attachment for elevators and for the cages used in hoisting works; and it consists in a novel arrangement of a grip,
which shall compress or bind against the side frames upon the breaking of the rope and thus retain the elevator at that point, but which shall remain perfectly free at all other times.
Referring to the accompanying drawing for a more complete explanation of my invention,
' Figure 1 is a front elevation of my safety device, and Fig. 2 shows one of the levers.
A A are the side frames between which the elevator B moves and'is guided. O O are two lever-arms pivoted at the points D to the frame B and having their outer ends bent around as at a, Fig. 2, so as to move outside the frames A. If preferred these ends may extend entirely around the frames A, or the levers C may be duplicated so that there will be one set upon each side. The inner ends of the levers extend beyond the center, so that they both pass through the link G. The hoistingrope is secured to the upper end of the link G, and when the weight of the elevator is sustained by the ropethe link, which slides vertically, will be drawn close up to the cross-bar E, thus raising the inner ends of the levers O and depressing the outer ends, so that the lugs move freely and out of contact with the frames A. A stout spring, F, is secured to the crossbar E, so that it acts directly on the inner ends of the arms 0 toforce them down instantly if the rope breaks, and the lugs at the outer ends will thus be made to bind firmly against the frames A and thus arrest the cage or elevator and prevent its falling. If preferred, a
spring for each arm or lever may be employed,
and thus the safety is made doubly sure, as if one lever should fail to work the other is still operative.
Having thus described my invention, what I claim and desire to secure by Letters Patent, is-
The levers O C with their binding lugs a, together with the vertically-sliding link G and the operating-springs F, substantially as and for the purpose herein described.
In witness whereof I hereunto set my hand and seal.
TIMOTHY STEBIN S. [L. s.] Witnesses:
J. L. BOONE, O. M. RICHARDSON.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US132112A true US132112A (en) | 1872-10-08 |
Family
ID=2201529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US132112D Expired - Lifetime US132112A (en) | Improvement in safety devices for elevators |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US132112A (en) |
-
0
- US US132112D patent/US132112A/en not_active Expired - Lifetime
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