CA1204714A - Portable manually operated rescue and lowering cable - Google Patents
Portable manually operated rescue and lowering cableInfo
- Publication number
- CA1204714A CA1204714A CA000483173A CA483173A CA1204714A CA 1204714 A CA1204714 A CA 1204714A CA 000483173 A CA000483173 A CA 000483173A CA 483173 A CA483173 A CA 483173A CA 1204714 A CA1204714 A CA 1204714A
- Authority
- CA
- Canada
- Prior art keywords
- cable
- brake
- securing
- building
- lever
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
- A62B1/08—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys
- A62B1/10—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys mechanically operated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Braking Arrangements (AREA)
Abstract
A B S T R A C T
This specification describes a portable manually operated rescue and lowering device. It consists of a coaster-brake bicycle hub with its flanges extended enough to form a drum to accommodate about 40 meters of fine aircraft cable. To permit hand operation a novel brake securing and releasing lever replaces the standard bicycle sprocket.
This modified assembly is mounted into a rigid frame so that the free end of the cable proceeds up away from the hub to be secured to a building part or object within the building. A fastener for hooking onto a sling is hung from the frame by means of a cable--the length of which is correct for holding a user within easy reach of the brake securing and releasing lever. With this lever, the operator can cause the cable to unwind quickly or slowly or to brake to a complete halt.
To prevent the cable from accidentally unwinding constant counterclock-wise tension is provided to the lever by two springs. The object of this invention is to provide a simpler, easier to operate device by means of which persons or objects can be manually lowered to safety in an emergency such as from a burning building. Another object is to make this device easily affordable, lighter and so compact that it might soon come into general use.
This specification describes a portable manually operated rescue and lowering device. It consists of a coaster-brake bicycle hub with its flanges extended enough to form a drum to accommodate about 40 meters of fine aircraft cable. To permit hand operation a novel brake securing and releasing lever replaces the standard bicycle sprocket.
This modified assembly is mounted into a rigid frame so that the free end of the cable proceeds up away from the hub to be secured to a building part or object within the building. A fastener for hooking onto a sling is hung from the frame by means of a cable--the length of which is correct for holding a user within easy reach of the brake securing and releasing lever. With this lever, the operator can cause the cable to unwind quickly or slowly or to brake to a complete halt.
To prevent the cable from accidentally unwinding constant counterclock-wise tension is provided to the lever by two springs. The object of this invention is to provide a simpler, easier to operate device by means of which persons or objects can be manually lowered to safety in an emergency such as from a burning building. Another object is to make this device easily affordable, lighter and so compact that it might soon come into general use.
Description
7~
This invention relates to a portable manually operated rescue and lowering cable for lowering oneself, others or ob~ects from one level to another in an emergency situation.
It is common in manually operated rescue and escape devices to include a housing containing a drum about which a cable is coiled. In use, one lowers himself from danger--the free cable end beine anchored at the point of departure while he, secured in a sling attached to the escape device housing, descends to safety, his rate and distance of descent being controlled by a braking mechanism which acts upon the cable drum during descent. I understand that various similar devices have been patented; however, I do not know of any that have come into common use. I believe this is because they may have been too large, heavy or cumbersome to be easily carried in a small suitcase, zipper bag or briefcase; and/or becauQe of complicated appearance individuals are apprehensive about handling them; and/or because they are too expensive to buy in the first place.
I believe that these disadvantages may be overcome by making a coaster-brake bicycle hub serve as both cable drum and brake at the same time by extending the hub ~langes far enough to create a drum for the cable and by replacing the coaster-brake sprocket with a lever to provide "by-hand" control to obtain "within-the-hub" braking action as required.
~oused in a small simply constructed frame this novel arrangement and adaptation combine to produce a very light and unusually ~all and ine~pensive lowering device--thereby overcoming the disadvantages referred to above.
In drawings which illustrate embodiments o~ the invention, Figure 1 is viewed from the front as its operator would see it during self-lowering.
Figure 2 is the device in the same position as in figure 1, but is viewed from the side.
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Figure 3 is a riew of the components contained in a typical coaSter-brake bicycle hub.
Figure 4 is an enlarged, broken-down view of a component in figure 3.
Figure 5 is a plan view of the brake securing and releasing lever that takes the place of the sprocket shown in figure 4.
The preferred embodiment illustrated is not intended to be exhaustive nor to limit the invention to the precise ~orm disclosed nor to designate the particular coaster-brake assembly to be utilized.
It has been chosen and described in order to best explain the principles of the invention and its application and practical use to thereby enable others skilled in the art to best utilize the invention.
The lowering device comprises a cable-holding coaster-brake bicycle hub assembly mounted in a metal frame to which is attached a cable and clasp for holding a body sling. Figure 3 represents a typical coaster-brake bicycle hub assembly with axle 9 accommodating, from le~t to right, axle nut 159 washer 18, shortened brake arm -l6, dust cap 20, ball retainer 21, brake cone 22, brake shoes 24, clutch spring & washer 23, clutch washer 25, clutch cone 26, ball retainer 21, driver 27, dust 20 cap 28, sprocket 29, ball retainer 30, dust cap 31, cone 32, washer 18 and nut 15.
When assembled, driver 27 engages within clutch cone 26, its grooves sliding within accommodating grooves inside of the said clu~ch cone. Accordingly, any counterclockwise turning of driver 27 results in clutch cone 26 being forced to the left where it rides under brake shoes 24, forcing them apart and to bear;strongly against the inside wall of hub 17, thus producing braking at the interior of the said hub.
And, clockwise turning of the said driver releases braking and allows the cable drum to turn and cable 2 to unwind from said drum.
In Figure 4, driver 27 is shown with sprocket retaining spring 33 removed from retainer spring recess 35, and sprocket 29 and dust cap 28 from support platform 34.
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Figure 5 shows brake securing and release lever 8 which replaces sprocket 29 and provides means for hand control of braking.
In operation the aircraft control cable 2 which is wound onto hub 17 wlth its free end passing between guide bolts 5 is run around a retaining Ob~ect and hooked onto itself' with fastener 1. Tensioning springs 6 maintain braking inside of hub 17, preventing it from turning by exerting cOunterclockwise force on the driver 27 through the brake securing and releasing lever 8, the said lever being connected by the said springs to frame side 4. The device user then hooks clasp 14 to his body sling or support, the said clasp being connected to sling support cable 13 which in turn connects to the lower ends of f'rame sides 4 through holes 12.
The device frame is rendered rigid by means of four bolts 11 which fasten metal member 43 to frame sides 4 immediately beneath extended hub flanges 10 and at the top by two long guide bolts 5 immediately above said hub flanges 10.
To begin deseent the device user exerts clockwise force with the two hands at the ends of both sides of the brake securing and releasing lever 8. When this clockwise force lessens, the counterclockwise tension being exerted by springs 6--cable 2 release from hub 17 commences.
To decrease or stop his rate of descent the user reduces or ceases applying clockwise force to said lever 8.
The user can lower ob~ects or persons with this device by securing clasp 14 to a retaining object or building and connecting the free end of cable 2 by means of fastener 1 to the ob~ect or person to be lowered.
Then, by operating the brake securing and releasing lever 8 the user can cause the cable 2 to unwind, so eff`ecting lowering.
Fasteners and clasps with screw type securing sleeves 7 are used to guard against accidental unfastening and metal press sleeves 3 are used as cable connectors f'or greater cable security.
.., r..~ ~, , . , ,. . . .
This invention relates to a portable manually operated rescue and lowering cable for lowering oneself, others or ob~ects from one level to another in an emergency situation.
It is common in manually operated rescue and escape devices to include a housing containing a drum about which a cable is coiled. In use, one lowers himself from danger--the free cable end beine anchored at the point of departure while he, secured in a sling attached to the escape device housing, descends to safety, his rate and distance of descent being controlled by a braking mechanism which acts upon the cable drum during descent. I understand that various similar devices have been patented; however, I do not know of any that have come into common use. I believe this is because they may have been too large, heavy or cumbersome to be easily carried in a small suitcase, zipper bag or briefcase; and/or becauQe of complicated appearance individuals are apprehensive about handling them; and/or because they are too expensive to buy in the first place.
I believe that these disadvantages may be overcome by making a coaster-brake bicycle hub serve as both cable drum and brake at the same time by extending the hub ~langes far enough to create a drum for the cable and by replacing the coaster-brake sprocket with a lever to provide "by-hand" control to obtain "within-the-hub" braking action as required.
~oused in a small simply constructed frame this novel arrangement and adaptation combine to produce a very light and unusually ~all and ine~pensive lowering device--thereby overcoming the disadvantages referred to above.
In drawings which illustrate embodiments o~ the invention, Figure 1 is viewed from the front as its operator would see it during self-lowering.
Figure 2 is the device in the same position as in figure 1, but is viewed from the side.
, ~
~Z~7~4~
Figure 3 is a riew of the components contained in a typical coaSter-brake bicycle hub.
Figure 4 is an enlarged, broken-down view of a component in figure 3.
Figure 5 is a plan view of the brake securing and releasing lever that takes the place of the sprocket shown in figure 4.
The preferred embodiment illustrated is not intended to be exhaustive nor to limit the invention to the precise ~orm disclosed nor to designate the particular coaster-brake assembly to be utilized.
It has been chosen and described in order to best explain the principles of the invention and its application and practical use to thereby enable others skilled in the art to best utilize the invention.
The lowering device comprises a cable-holding coaster-brake bicycle hub assembly mounted in a metal frame to which is attached a cable and clasp for holding a body sling. Figure 3 represents a typical coaster-brake bicycle hub assembly with axle 9 accommodating, from le~t to right, axle nut 159 washer 18, shortened brake arm -l6, dust cap 20, ball retainer 21, brake cone 22, brake shoes 24, clutch spring & washer 23, clutch washer 25, clutch cone 26, ball retainer 21, driver 27, dust 20 cap 28, sprocket 29, ball retainer 30, dust cap 31, cone 32, washer 18 and nut 15.
When assembled, driver 27 engages within clutch cone 26, its grooves sliding within accommodating grooves inside of the said clu~ch cone. Accordingly, any counterclockwise turning of driver 27 results in clutch cone 26 being forced to the left where it rides under brake shoes 24, forcing them apart and to bear;strongly against the inside wall of hub 17, thus producing braking at the interior of the said hub.
And, clockwise turning of the said driver releases braking and allows the cable drum to turn and cable 2 to unwind from said drum.
In Figure 4, driver 27 is shown with sprocket retaining spring 33 removed from retainer spring recess 35, and sprocket 29 and dust cap 28 from support platform 34.
:~, 7~
Figure 5 shows brake securing and release lever 8 which replaces sprocket 29 and provides means for hand control of braking.
In operation the aircraft control cable 2 which is wound onto hub 17 wlth its free end passing between guide bolts 5 is run around a retaining Ob~ect and hooked onto itself' with fastener 1. Tensioning springs 6 maintain braking inside of hub 17, preventing it from turning by exerting cOunterclockwise force on the driver 27 through the brake securing and releasing lever 8, the said lever being connected by the said springs to frame side 4. The device user then hooks clasp 14 to his body sling or support, the said clasp being connected to sling support cable 13 which in turn connects to the lower ends of f'rame sides 4 through holes 12.
The device frame is rendered rigid by means of four bolts 11 which fasten metal member 43 to frame sides 4 immediately beneath extended hub flanges 10 and at the top by two long guide bolts 5 immediately above said hub flanges 10.
To begin deseent the device user exerts clockwise force with the two hands at the ends of both sides of the brake securing and releasing lever 8. When this clockwise force lessens, the counterclockwise tension being exerted by springs 6--cable 2 release from hub 17 commences.
To decrease or stop his rate of descent the user reduces or ceases applying clockwise force to said lever 8.
The user can lower ob~ects or persons with this device by securing clasp 14 to a retaining object or building and connecting the free end of cable 2 by means of fastener 1 to the ob~ect or person to be lowered.
Then, by operating the brake securing and releasing lever 8 the user can cause the cable 2 to unwind, so eff`ecting lowering.
Fasteners and clasps with screw type securing sleeves 7 are used to guard against accidental unfastening and metal press sleeves 3 are used as cable connectors f'or greater cable security.
.., r..~ ~, , . , ,. . . .
Claims (2)
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A portable manually operated rescue and lowering cable comprising a coaster-brake type of bicycle hub with extended flanges forming a drum onto which aircraft cable is wound with the free end of the said cable, fitted with a fastener, extending to provide for anchoring to a securing object or building, a brake securing and releasing hand lever for operating the brake mechanism within the bicycle hub in place of the sprocket, a metal frame for housing the hub assembly and cable, two tensioning springs joining each side of the said hand lever to the said frame to automatically retard or halt cable release when brake release pressure on the said hand lever is lessened or ceases, a cable connected to the said frame and fitted with a fastener which attaches to a sling supporting the user.
2. A device as defined in claim 1 operated in an upside-down attitude, the sling support end being anchored to a securing object or building and the free end of the cable, supporting an object or person, being lowered by the individual operating the brake securing and releasing hand lever from above, as required, to ensure safe controlled descent to a lower level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000483173A CA1204714A (en) | 1985-06-05 | 1985-06-05 | Portable manually operated rescue and lowering cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000483173A CA1204714A (en) | 1985-06-05 | 1985-06-05 | Portable manually operated rescue and lowering cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1204714A true CA1204714A (en) | 1986-05-20 |
Family
ID=4130640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000483173A Expired CA1204714A (en) | 1985-06-05 | 1985-06-05 | Portable manually operated rescue and lowering cable |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1204714A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523857A (en) * | 2022-03-30 | 2022-05-24 | 翁沂南 | Multifunctional multipurpose transportation emergency rescue vehicle |
| CN117961425A (en) * | 2024-04-01 | 2024-05-03 | 邢台轩路自行车零配件有限公司 | Rolling mechanism for bicycle hub and hub manufacturing method |
-
1985
- 1985-06-05 CA CA000483173A patent/CA1204714A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523857A (en) * | 2022-03-30 | 2022-05-24 | 翁沂南 | Multifunctional multipurpose transportation emergency rescue vehicle |
| CN117961425A (en) * | 2024-04-01 | 2024-05-03 | 邢台轩路自行车零配件有限公司 | Rolling mechanism for bicycle hub and hub manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |