DE522207C - Locking device for mobile stepladders - Google Patents
Locking device for mobile stepladdersInfo
- Publication number
- DE522207C DE522207C DEF69184D DEF0069184D DE522207C DE 522207 C DE522207 C DE 522207C DE F69184 D DEF69184 D DE F69184D DE F0069184 D DEF0069184 D DE F0069184D DE 522207 C DE522207 C DE 522207C
- Authority
- DE
- Germany
- Prior art keywords
- rollers
- locking device
- lever
- stepladders
- mobile
- 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
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
Description
Feststellvorrichtung für fahrbare Stehleitern Gegenstand der Erfindung ist eine Feststellvorrichtung für fahrbare Stehleitern, wie solche vorzugsweise von Malern, Tapezierern und Anstreichern gebraucht werden.Locking device for mobile stepladders is the subject of the invention is a locking device for mobile stepladders, such as those preferably are used by painters, upholsterers and house painters.
Bei diesen mit Rollen versehenen Leitern liegt die Gefahr sehr nahe, daß sich dieselben z. B. durch Schwerpunktsverlegung unbeabsichtigt und selbsttätig weiterschieben, so daß die Gefahr des Herabstürzens besteht, was besonders dann in Frage kommt, wenn außerhalb des Hauses die Leiter auf dem glatten Bürgersteig benutzt wird.With these ladders provided with rollers, the danger is very close, that the same z. B. unintentionally and automatically by shifting the center of gravity keep pushing so that there is a risk of falling, which is especially important then possible when outside the house the ladder on the slippery sidewalk is used.
Diesem Übelstand wird gemäß der Erfindung dadurch abgeholfen, daß entweder die Fahrrollen durch eine Hebeleinrichtung umgelegt, also vom Boden abgehoben werden, oder daß hinter den Rollen ein mit einem Saugnapf versehener Stützhebel derart gelagert wird, daß er durch eine Hebeleinrichtung mit dem Saugnapf gegen den Boden gepreßt werden kann, wobei er bremsend wirkt.This drawback is remedied according to the invention in that either the castors are turned over by a lever device, that is, lifted off the ground be, or that behind the rollers a support lever provided with a suction cup is mounted in such a way that it is counteracted by a lever device with the suction cup the ground can be pressed, where it has a braking effect.
Die Erfindung ist auf der Zeichnung dargestellt, und es zeigen Abb. z eine schaubildliche Ansicht der festgestellten Stehleiter mit verschwenkten Rollen, Abb. 2 eine teilweise Ansicht der Schwenkrollen und Abb. 3 die Ansicht eines Bremshebels hinter den Laufrollen.The invention is illustrated in the drawing, and Fig. z a diagrammatic view of the fixed stepladder with pivoted rollers, Fig. 2 is a partial view of the castors and Fig. 3 is a view of a brake lever behind the rollers.
Die beiden Holme b tragen, wie üblich, am unteren Ende die Fahr- und Lenkrollen d, die, wie bekannt, durch die Kegelräder e, f und Welle g von der Kurbel h in Umdrehung versetzt werden. An dem anderen Holmpaar b1 sind die Laufrollen l gelagert, die nur leer mitlaufen. Diese Rollen sind an um die durchgehende Achse i schwenkbaren Hebeln k angelenkt und lassen sich infolgedessen nach unten in die punktierte Stellung umschwenken. Zu diesem Zweck sind die Hebel k auf beiden oder nur auf einer Seite der Leiter nach rückwärts verlängert und mit einem längs eines Holmes emporgeführten Gestänge m verbunden, welches oben an einem Hebel n angreift, der durch die Achse o mit einem Handhebel p verbunden ist. Wird nun dieser Hebel umgeschwenkt, so schieben sich entweder die Rollen l unter die Holme b1 oder in umgekehrtem Sinne unter den Holmen hervor in waagerechte Lage, so daß die Holmenenden auf dem Boden ruhen und die Leiter nicht mehr fortgerollt werden kann. Zur Vermeidung des Überschlagens der Rollen sind Anschlagwinkel y vorgesehen, gegen die sich die Schwenkhebel k anlegen.The two spars b carry, as usual, at the lower end the driving and steering rollers d, which, as is known, are set in rotation by the crank h by the bevel gears e, f and shaft g. On the other pair of spars b1, the rollers l are mounted, which only run along empty. These rollers are articulated to levers k which can be pivoted about the continuous axis i and can consequently be pivoted downwards into the dotted position. For this purpose, the levers k are extended backwards on both or only one side of the ladder and are connected to a linkage m which is carried up along a spar and which engages at the top on a lever n which is connected to a hand lever p through the axis o. If this lever is now swiveled around, either the rollers l slide under the bars b1 or, in the opposite sense, from under the bars into a horizontal position, so that the bar ends rest on the floor and the ladder can no longer be rolled away. To prevent the rollers from rolling over, stop angles y are provided against which the pivot levers k rest.
Bei der Ausführung nach Abb. 3 sind die Laufrollen l nicht schwenkbar, sondern mittels einer festen Achse an den Holmen b1 angebracht. Dafür ist auf der Schmalseite der letzteren ein Lager w1 für einen Doppelhebel v angeordnet, dessen langer Schenkel nach unten gerichtet ist und einen tunlichst aus Gummi gefertigten Saugnapf w trägt, während der kurze Schenkel mit dem Hebelgestänge ?n verbunden ist, so daß beim Umschwenken des Hebels p sich der Bremshebel v mit dem Saugnapf w auf den Fußboden preßt oder sich von ihm abhebt.In the version according to Fig. 3, the rollers l cannot be swiveled, but attached to the spars b1 by means of a fixed axle. That's what the Narrow side of the latter a bearing w1 arranged for a double lever v, whose long leg is directed downwards and one made of rubber if possible Suction cup w carries, while the short leg is connected to the lever linkage? N is, so that when turning the lever p, the brake lever v with the suction cup w presses against the floor or lifts off from it.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF69184D DE522207C (en) | Locking device for mobile stepladders |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF69184D DE522207C (en) | Locking device for mobile stepladders |
Publications (1)
Publication Number | Publication Date |
---|---|
DE522207C true DE522207C (en) | 1931-04-07 |
Family
ID=7111060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF69184D Expired DE522207C (en) | Locking device for mobile stepladders |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE522207C (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2479736A (en) * | 1946-12-06 | 1949-08-23 | Robert W Fieroh | Stair stand |
US2845208A (en) * | 1954-03-18 | 1958-07-29 | Florentin J B Antonietti | Traveling step ladder |
US2922487A (en) * | 1958-05-07 | 1960-01-26 | Reitknecht Jack | Stepladder |
EP0269936A1 (en) * | 1986-11-26 | 1988-06-08 | GIMI S.r.l. | Elevated mobile workstation |
DE3804306A1 (en) * | 1988-02-09 | 1989-08-17 | Herve Rousselot | Stepladder |
WO1997016621A1 (en) * | 1995-10-31 | 1997-05-09 | Custom Ladder Company Pty. Ltd. | Ladder |
ES2383081A1 (en) * | 2009-08-21 | 2012-06-18 | Clh Aviacion S.A. | Towable ladder for the supply of fuel to aircraft (Machine-translation by Google Translate, not legally binding) |
EP2806097A1 (en) * | 2013-05-21 | 2014-11-26 | CDH Group | Stepladder with retractable wheels, a front wheel of which being tiltably mounted and hand-operated |
FR3007449A1 (en) * | 2013-06-25 | 2014-12-26 | Cdh Group | FOOTBOARD WITH REMOVABLE WHEELS WITH BODY CONTROL |
IT201800002173A1 (en) * | 2018-01-30 | 2019-07-30 | Ferrero Carlo | Bars with pivoting toothed wheels and a lifting system, suitable for double ladders |
-
0
- DE DEF69184D patent/DE522207C/en not_active Expired
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2479736A (en) * | 1946-12-06 | 1949-08-23 | Robert W Fieroh | Stair stand |
US2845208A (en) * | 1954-03-18 | 1958-07-29 | Florentin J B Antonietti | Traveling step ladder |
US2922487A (en) * | 1958-05-07 | 1960-01-26 | Reitknecht Jack | Stepladder |
EP0269936A1 (en) * | 1986-11-26 | 1988-06-08 | GIMI S.r.l. | Elevated mobile workstation |
DE3804306A1 (en) * | 1988-02-09 | 1989-08-17 | Herve Rousselot | Stepladder |
WO1997016621A1 (en) * | 1995-10-31 | 1997-05-09 | Custom Ladder Company Pty. Ltd. | Ladder |
US6179087B1 (en) | 1995-10-31 | 2001-01-30 | Custom Ladder Company Pty. Ltd. | Ladder |
ES2383081A1 (en) * | 2009-08-21 | 2012-06-18 | Clh Aviacion S.A. | Towable ladder for the supply of fuel to aircraft (Machine-translation by Google Translate, not legally binding) |
EP2806097A1 (en) * | 2013-05-21 | 2014-11-26 | CDH Group | Stepladder with retractable wheels, a front wheel of which being tiltably mounted and hand-operated |
FR3005986A1 (en) * | 2013-05-21 | 2014-11-28 | Cdh Group | FOOTBOARD HAVING RECOVERABLE WHEELS, INCLUDING A FRONT WHEEL TILT UP WITH MANUAL CONTROL |
FR3007449A1 (en) * | 2013-06-25 | 2014-12-26 | Cdh Group | FOOTBOARD WITH REMOVABLE WHEELS WITH BODY CONTROL |
EP2818625A1 (en) * | 2013-06-25 | 2014-12-31 | CDH Group | Step with retractable wheels with control by railing |
IT201800002173A1 (en) * | 2018-01-30 | 2019-07-30 | Ferrero Carlo | Bars with pivoting toothed wheels and a lifting system, suitable for double ladders |
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