US230006A - Safety - Google Patents
Safety Download PDFInfo
- Publication number
- US230006A US230006A US230006DA US230006A US 230006 A US230006 A US 230006A US 230006D A US230006D A US 230006DA US 230006 A US230006 A US 230006A
- Authority
- US
- United States
- Prior art keywords
- car
- elevator
- wedge
- rope
- block
- 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
- 239000002965 rope Substances 0.000 description 20
- 238000010276 construction Methods 0.000 description 4
- 230000001419 dependent Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
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
- B66B5/22—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 linearly-movable wedges
Definitions
- FIG. 2 is a similar view, showing a method of operating the wedge from within the car 5 Fig. 3, detail.
- elevators be provided with means whereby the car may be stopped upon the breaking of the hoistingrope, and various devices have been invented for this purpose. Most of them relate to levers or cams which are attached to the car and are arranged to engage with racks upon the Walls of the elevator-well upon the breaking of the hoisting-rope, and in actual practice many of these methods have proved to be impracticable.
- A represents an elevator-car
- B two walls of the elevator-well 5 C, the hoisting-rope by which the elevator is raised and lowered
- D a wedge-shaped block having the straight surface a, which is adapted to bear against the wall of the elevator and the inclined surface el.
- the block is suspended by means of the rope d2, and is raised and lowered with the elevatorcar thereby, the point of the wedge being as close to the bottom of the elevator-car as practicable. In some instances it may extend somewhat above the lower line of the bottom of the elevator-car, and, if desirable, the lower corner of the elevator-car may be slightly cut away, as represented in Figs. l and 2, to more readily receive the point of the wedge.
- the Wedge-block may be raised and lowered by the same drum that is used in winding and unwinding the car-hoisting rope, or it may be operated in any lother desirable way, the essential feature of this part of the invention being the wedge-shaped block, not connected with (No model.)
- the car or its hoisting-rope arranged to travel with the car, immediately below it, in such a position that upon the breaking of the hoisting-rope the car shall descend thereon with as4 little momentum as possible, and become wedged between the walls of the elevator-well.
- the wedge-block is connected with the car by means of a lever. or some other suitable device in the car may be used for regulating the position of the wedge-block in relation to the bottom of the car, and even for drawing the wedge-block in that position for the purposeV of stopping the car if the independent suspending-rope be not employed; but I prefer that the independent suspending-rope be used.
- Fig. 3 I represent a modification in the shape of the Wedge-block, in which ⁇ there is arranged -on one wall of the elevator-well a series of projections extending from the bottom of the well to the top, and upon or close to which the wedge-block, having upon the face which travels on the side of the well a. similar series of elevations and depressions, whereby, upon the breaking of the hoistingrope and the descent of the car upon the wedge, the wedge is more securely held in position than if no means for locking the wedge were employed.
- the elevator-car may be provided with teeth F upon its lower end, opposite the wedge-block, which shall project outward therefrom and are securely fastened thereto, and which, when the elevator-car is canted by coming in contact with the wedge, will be forced into the side of the elevatorwell 5 and like teeth, for the same purpose, to act in the same way, may be attached to the upper edge or corner of the elevator-car above the wedge.
- the rope for supporting the wedgeblock preferably should run in a groove or recess in the elevator-well.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Description
(No Model.)
A.l H. HALL. Safety Appliance for Elevatofrs.
med 1mg/1311880.
INVENTR ate Q@ Y N. PETERS. PHOTO-LJTHDGHPMER, WASHINGTON. D. C.
WITNEEEEE UNITED STATES PATENT OFFICE.
ALFRED H. HALL, OF BSTON, MASSACHUSETTS.
SAFETY APPLIANCE FOR ELEVATORS.
SPECIFICATION forming part of Letters Patent No. 230,006, dated July 13, 1880.
Application filed May Q7, 1880.
To all whom it may concern:
Be it known that I, ALFRED H. HALL, of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improved Safety Appliance for Elevators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this speciiication, in which- Figure l represents an elevator-car and its well with my improvements applied thereto. Fig. 2 is a similar view, showing a method of operating the wedge from within the car 5 Fig. 3, detail.
It is very essential that elevators be provided with means whereby the car may be stopped upon the breaking of the hoistingrope, and various devices have been invented for this purpose. Most of them relate to levers or cams which are attached to the car and are arranged to engage with racks upon the Walls of the elevator-well upon the breaking of the hoisting-rope, and in actual practice many of these methods have proved to be impracticable.
My invention consists in certain details of construction, as hereinafter set forth and specifically claimed.
In the said drawings, A represents an elevator-car, B, two walls of the elevator-well 5 C, the hoisting-rope by which the elevator is raised and lowered; D, a wedge-shaped block having the straight surface a, which is adapted to bear against the wall of the elevator and the inclined surface el.
The block is suspended by means of the rope d2, and is raised and lowered with the elevatorcar thereby, the point of the wedge being as close to the bottom of the elevator-car as practicable. In some instances it may extend somewhat above the lower line of the bottom of the elevator-car, and, if desirable, the lower corner of the elevator-car may be slightly cut away, as represented in Figs. l and 2, to more readily receive the point of the wedge.
The Wedge-block may be raised and lowered by the same drum that is used in winding and unwinding the car-hoisting rope, or it may be operated in any lother desirable way, the essential feature of this part of the invention being the wedge-shaped block, not connected with (No model.)
' the car or its hoisting-rope, arranged to travel with the car, immediately below it, in such a position that upon the breaking of the hoisting-rope the car shall descend thereon with as4 little momentum as possible, and become wedged between the walls of the elevator-well. The wedge-block is connected with the car by means of a lever. or some other suitable device in the car may be used for regulating the position of the wedge-block in relation to the bottom of the car, and even for drawing the wedge-block in that position for the purposeV of stopping the car if the independent suspending-rope be not employed; but I prefer that the independent suspending-rope be used.
In Fig. 3 I represent a modification in the shape of the Wedge-block, in which `there is arranged -on one wall of the elevator-well a series of projections extending from the bottom of the well to the top, and upon or close to which the wedge-block, having upon the face which travels on the side of the well a. similar series of elevations and depressions, whereby, upon the breaking of the hoistingrope and the descent of the car upon the wedge, the wedge is more securely held in position than if no means for locking the wedge were employed.
The elevator-car, if desired, may be provided with teeth F upon its lower end, opposite the wedge-block, which shall project outward therefrom and are securely fastened thereto, and which, when the elevator-car is canted by coming in contact with the wedge, will be forced into the side of the elevatorwell 5 and like teeth, for the same purpose, to act in the same way, may be attached to the upper edge or corner of the elevator-car above the wedge. The rope for supporting the wedgeblock preferably should run in a groove or recess in the elevator-well.
The advantages of this invention over the other safety appliances consist principally in its efficiency in operation and its cheapness of construction, and in'its being less liable to get IOO having a movement with the elevator-ear, and vided with teeth F'upon its lower and upper 1o means whereby the location of theWedge-bloek corners or lower corner or edges or edge, subin relation to the ear maybe varied from withstantially as and for the purpose described.
in the ear, substantially as and for the pur- Witness my hand this 22d day of May, A. D.
poses described. 1880. p
2. The combination of' aWedge-shaped bloeig ALFRED H. HALL. having a movement in an elevator-Well eoin- In presence ofeident with that of Jche elevator-ear by an in- F. ERNEST CABOT, dependent supporting-rope, and the ear pro- SAMUEL W. TUCKER.
Publications (1)
Publication Number | Publication Date |
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US230006A true US230006A (en) | 1880-07-13 |
Family
ID=2299383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US230006D Expired - Lifetime US230006A (en) | Safety |
Country Status (1)
Country | Link |
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US (1) | US230006A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090159372A1 (en) * | 2005-10-21 | 2009-06-25 | Alimak Ab | Safety Arrangement for a Lift Car in a Lift |
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0
- US US230006D patent/US230006A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090159372A1 (en) * | 2005-10-21 | 2009-06-25 | Alimak Ab | Safety Arrangement for a Lift Car in a Lift |
US8875845B2 (en) * | 2005-10-21 | 2014-11-04 | Alimak Ab | Safety arrangement for a lift car in a lift |
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