US3825098A - Hanging scaffolding - Google Patents
Hanging scaffolding Download PDFInfo
- Publication number
- US3825098A US3825098A US00317180A US31718072A US3825098A US 3825098 A US3825098 A US 3825098A US 00317180 A US00317180 A US 00317180A US 31718072 A US31718072 A US 31718072A US 3825098 A US3825098 A US 3825098A
- Authority
- US
- United States
- Prior art keywords
- ladders
- rail
- protective
- scaffold
- deck
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G3/34—Mobile scaffolds; Scaffolds with mobile platforms characterised by supporting structures provided on the roofs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
Definitions
- a handrail and midrail for each stage is secured, at its ends, to the outer sides of the ladders by pivotal handrail brackets'attached to channel clamps which are adjustably fastened within the rail to compensate for variations in distance between the confronting ladders.
- Special flange clamps are provided for supporting the deckside rails without the necessity of perforating and weakening of the side rails.
- a toe rail or plate prevents tools and equipment from falling onto lower stages or the ground.
- This invention generally relates to hanging scaffolding and, more particularly, to a handrail system therefor.
- Handrail systems are generally make-shift devices comprised of aluminum angles or posts, cables, clamps, etc. which require perforations in the scaffolding formounting, thereby weakening the scaffolding, alsowhich reduce workingclearance for workers supported on the scaffolding.
- Another disadvantage is that no suitable barriers are provided for preventing tools and equipment from dropping from the scaffolding to lower stages or to the ground.
- An object of the present invention is to provide a novel hanging scaffolding assembly devoid of the abovenamed disadvantages and including a novel handrail, midrail and toe rail or plate, the latter being for the purpose of preventing falling of tools and equipment,
- Another object of the invention is to provide a novel mounting means for a handrail and midrail system so as to automatically adjust for variations in distances between the suspended ladders whose rungs serve as supports for the working decks or stages of scaffolding.
- Still another object of the invention is to provide a hanging scaffolding system which enables precision prefabrication; flexibility of position on the staging;
- FIG. 1 is an elevational view of hanging scaffolding suspended between two spaced confronting ladders and embodying particular features of the present invention including a handrail, midrail and toe plate or rail for each of the four stages;
- FIG. 2 is an enlarged, cross-sectional view taken along line IIII of FIG. 1 showing a rung of one of the suspended ladders;
- FIG. 3 is an enlarged, fragmentary view showing one end of the handrail 9 illustrating its adjustable supporting means pivotally mounted on ladder 3;
- FIG. 3a is a perspective view of a modified form of tab or stop at the end of midrail
- FIG. 4- is a cross-sectional view taken along line IV-IV of FIG. 5; j
- FIG. 5 is an enlarged, fragmentary, elevational view
- FIG. 6 is an enlarged, elevational side view taken along line VI-VI of FIG. 1 illustrating the handrail, midrail, toe plate and scaffold deck of one of the stages of scaffolding;
- FIG. 7 is an enlarged, elevational rear view as viewed from the right side of FIG. 6;
- FIG. 8 is an enlarged, cross-sectional view of the inboard toe plate and assembly
- FIG. 9 is an enlargedcross-sectional view of the inboard toe plate support
- FIG. 10a is an enlarged, cross-sectional view of the clamp 20 of FIG. 6 shown in its initial position for assembly;
- FIG. 10b is a similar view showing its assembled position.
- numerals 1, 1 denote outriggers withwheeled supporting'elements adapted to travel horizontally along roof eave 2.
- a ladder 3 Suspended from each outrigger 1 is a ladder 3, preferably of aluminum, suspended by a pair of steel bars or wire rope bridles 4 extending angularly to the side rails of the ladders 3.
- FIG. 1 shows four vertically spaced scaffold stages (although a larger or smaller number may be used instead), one of which stages is shown in detail in FIGS. 6 and 7, it being understood that each of the four stages is of the same construction.
- Each stage -7 comprises a scaffold deck 6 mounted on deck side rails 5 which are directly supported on corresponding confronting rungs 13 of opposite ladders 3, 3 (FIG. 5).
- FIGS. 2 and 3 show how the ends of the mid rail 10 are pivotally and adjustably mounted on the side of ladder 3.
- a supporting ladder bolt 12 to which is pivoted, one end portion of the mid, rail bracket 11.
- the other end portion of the bracket 11 is connected, by means of a bolt and washer 14, to a channel as will appear more clearly in FIGS. 6 and 7.
- channel clamp 17 is positioned properly within the mid rail 10, it is fastened showing the deck side rail and outboard toe plate or rail at one end thereof;
- the handrail 9 is suspended by rail'brackets 11 in a manner similar to that illustrated in FIGS. 2 and 3 for the mid rail 10.
- FIGS. 4 and 5 show the manner in which the scaffold stages 7, 7 are supported, namely, directly on top of the rungs 13 of the special, confronting ladders.
- Toe rail bracket24 and toe rail or plate 15 are bolted together by bolt 25 fastened to channel clamp 17 which is adjustably slid within the aluminum toe plate or rail 15.
- Bolt 27 is rigidly fastened to bracket. 24 and is surrounded by a scaffold rung 26 onto the ends of which are screw threaded nuts 28, 28.
- a scaffold deck 6a is supported on scaffold rung 26 on which the workmen walk in performing their duty.
- the aluminum toe plate or rail 15 is for the purpose of preventing tools or equipment from dropping from the scaffolding to the lower stages or to the ground.
- FIGS. 6 and 7 show, in more detail, the complete-assembly of one of the stages including handrail 9, midrail l and toe plate or rail 15. It will be noted that since handrail 9 and midrail 10 are mounted on the outside of aluminum posts 8, more working space is provided for the workmen as compared to mounting them on the inside, that is, .tothe right'of post 8 as viewed in FIG. 6. Thus at least 3 inches of extra space for body movement of the workmen is provided.
- deck side rails 5 are provided and mounted in a unique manner, namely, by flanged clamp 20 having an end portion extending downwardly and angularly so that in order to mount or suspend the deck side rail therefrom the flanged clamp 20 must be first tilted to the right, as shown in FIG. a, and then moved to its vertical position as shown in FIG. 10b for supporting or suspending the deck side rail from post 8 without the necessity of puncturing holes for attaching fastening means to the side rails 5.
- a removable 'tab 20a is provided to ac; comodate different widths of top flanges of the deck side rails 5.
- the rail support post 8 is rigidly clamped to the scaffold side rail 5 by means of a J-Bolt 23 which is tightened down by wing nut 23a.
- a web clamp 21 has a hole through which the shank of the J bolt 23 passes and has a flange 22 resting against rail 5 to provide the proper spacing and reinforcing.
- the handrail and midrail may have similar-fixed ends instead of pivotal ends, or all pivotal ends or any combinations of fixed and pivotal ends may be used for the three rails, or two additional post assemblies maybe used to bring the total post per stage to four.
- FIG. 8 shows an inboard (side closest work) toe plate assembly comprising toe plate fastened by channel clamp 17 "and bolt 18' to a 4" wide aluminum plate 25 and to flange 19' of clamp 20' mounted on the inboard side rail 5"wit'h the assistance of J bolt 23 tightened by wing nut 23a.
- FIG. 9 shows a modification of the inboard toe plate support assembly comprising inboard toe plate 15 mounted on the scaffold side rail 5 andheld in place by a U-bolt 31 with neoprene sleeves 32 to confine the toe plate against rotation if foot pressure is applied.
- the bolt is tightened by wing nuts 33.
- a safe hanging scaffolding including a highly efficient handrail system together with a midrail and top plate or rail for providing complete safety for the workmen; furthermore, I have provided an assembly wherein the parts may be precisely prefabricated without the necessity of holes in the staging to support the posts or railing, and wherein different sizes of staging, for'example, either 5 inches or 6 inches depth and with either 1% inch or 2 inch widetop flange may be provided; also I have provided a novel suspension for a handrail and midrail on the ladders which allows at least 3 inches extra space for hand or body movement of the workmen beyond that normally provided by inside mounting thereof; furthermore, I have provided an assembly which is easily mounted and dismounted for transportation and which includes relatively simple and inexpensive parts of minimum number, thereby limiting the loss or misplacement of integral parts; furthermore, l haveprovided a hanging scaffolding wherein all parts are made of very strong, yet light weightmetal to reduce the dead load of the scaffolding and to provide a very high degree of safety for the workmen;
- a spaced pair of wheeled outriggers for movement along a roof cave of a building, hanging scaffolding comprising a pair of suspended metal ladders in spaced confronting relationship, each suspended from one of said Outriggers, said ladders each comprising sleeve shaped rungs and a pair of sides of channel shaped cross-section to which said rungs are rigidly secured, a ladder boltpositioned axially of each rung, a protective side rail, a bracket pivotally connected through adjusting means between each end portion of said side rail and one end of the ladderbolt of corresponding height to automatically compensate for variations in distances between said ladders, said adjusting means comprising a clamp slidably mounted in the-end portion of said protective rail and having locking means for rigidly fastening said clamp at the ad justed longitudinal position in said protective side rail.
- each stage including a scaffold deck mounted directly 5.
- each of said scaffold decks includes a deck side rail fastened to one of said posts by a bracket including a flanged portion surrounding the sides of the top flange of said side rail, said flanged portion including an angularly downwardly and inwardly extending flange portionfor supporting the lower surface of said top flange.
- hanging scaffolding comprising a pair of suspended metal ladders in spaced confronting relationship, said ladders each comprising sleeve shaped rungs rigidly secured to the sides of each ladder, a ladder bolt positioned axially of each rung, and a protective side rail connected at each end to one .end of a ladder bolt of corresponding height, a plurality of vertical stages supported by said ladders, each stage comprising an outer protective rail pivotally mounted, through a bracket, to adjustable longitudinal positions of said rail, each stage including a scaffold deck mounted directly on confronting corresponding rungs of said ladders, a plurality of posts extending vertically 6 between said scaffold decks and protective railing, a toe plate extending parallel to said protective railing immediately above each scaffold deck to prevent tools and equipment from dropping downwardly from said decks, and a toe rail bracket pivotally connected to said deck side rail and toe plate through a channel clamp which is longitudinally slidable within said toe plate and fastened at adjustable longitudinal positions therein.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ladders (AREA)
Abstract
Description
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00317180A US3825098A (en) | 1972-12-21 | 1972-12-21 | Hanging scaffolding |
US00365955A US3854550A (en) | 1972-12-21 | 1973-06-01 | Mobile outrigger for scaffolds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00317180A US3825098A (en) | 1972-12-21 | 1972-12-21 | Hanging scaffolding |
Publications (1)
Publication Number | Publication Date |
---|---|
US3825098A true US3825098A (en) | 1974-07-23 |
Family
ID=23232480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00317180A Expired - Lifetime US3825098A (en) | 1972-12-21 | 1972-12-21 | Hanging scaffolding |
Country Status (1)
Country | Link |
---|---|
US (1) | US3825098A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4473030A (en) * | 1982-07-20 | 1984-09-25 | Louis Danno | Artifical insemination apparatus including a stand for use with a battery of cages |
GB2336391A (en) * | 1998-04-14 | 1999-10-20 | Steven Ramsey | Means for connecting a guard rail to scaffolding |
US6098751A (en) * | 1998-09-10 | 2000-08-08 | Mountain Box Systems | Studio lamp scaffold system |
ES2306576A1 (en) * | 2006-05-09 | 2008-11-01 | Constructora Eshor, S.L. | Safety railing for formwork. (Machine-translation by Google Translate, not legally binding) |
US20110272659A1 (en) * | 2010-05-07 | 2011-11-10 | Safety Maker, Inc. | Apparatus for Forming Temporary Guardrails on Stairs |
US20120205604A1 (en) * | 2010-05-07 | 2012-08-16 | Miguel Osvaldo Gutierrez | Apparatus for Forming Temporary Guardrail on Stairs |
US10053874B2 (en) | 2015-02-18 | 2018-08-21 | Tarsco Construction Corporation | Adjustable scaffolding |
-
1972
- 1972-12-21 US US00317180A patent/US3825098A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4473030A (en) * | 1982-07-20 | 1984-09-25 | Louis Danno | Artifical insemination apparatus including a stand for use with a battery of cages |
GB2336391A (en) * | 1998-04-14 | 1999-10-20 | Steven Ramsey | Means for connecting a guard rail to scaffolding |
US6098751A (en) * | 1998-09-10 | 2000-08-08 | Mountain Box Systems | Studio lamp scaffold system |
ES2306576A1 (en) * | 2006-05-09 | 2008-11-01 | Constructora Eshor, S.L. | Safety railing for formwork. (Machine-translation by Google Translate, not legally binding) |
US20110272659A1 (en) * | 2010-05-07 | 2011-11-10 | Safety Maker, Inc. | Apparatus for Forming Temporary Guardrails on Stairs |
US20120205604A1 (en) * | 2010-05-07 | 2012-08-16 | Miguel Osvaldo Gutierrez | Apparatus for Forming Temporary Guardrail on Stairs |
US9493959B2 (en) * | 2010-05-07 | 2016-11-15 | Safety Maker, Inc. | Apparatus for forming temporary guardrail on stairs |
US9598870B2 (en) | 2010-05-07 | 2017-03-21 | Safety Maker, Inc. | Apparatus for forming temporary guardrails on stairs |
EP2567044B1 (en) * | 2010-05-07 | 2021-12-01 | Safety Maker Inc. | Apparatus for forming temporary guardrails on stairs |
US10053874B2 (en) | 2015-02-18 | 2018-08-21 | Tarsco Construction Corporation | Adjustable scaffolding |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MSL ACQUISTION CORPORATION, A DE CORP. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CYCLOPS CORPORATION;REEL/FRAME:004807/0983 Effective date: 19870626 Owner name: MSL ACQUISTION CORPORATION, A DE CORP.,STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CYCLOPS CORPORATION;REEL/FRAME:004807/0983 Effective date: 19870626 |
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AS | Assignment |
Owner name: MELON BANK, N.A., ONE MELLON BANK CENTER, PITTSBUR Free format text: SECURITY INTEREST;ASSIGNOR:CYCLOPS CORPORATION;REEL/FRAME:004809/0868 Effective date: 19870930 |
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AS | Assignment |
Owner name: CYCLOPS CORPORATION Free format text: CHANGE OF NAME;ASSIGNOR:MSL ACQUISITION CORPORATION;REEL/FRAME:004832/0543 Effective date: 19880212 |
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AS | Assignment |
Owner name: PITTSBURGH NATIONAL BANK, FIFTH AVENUE AND WOOD ST Free format text: SECURITY INTEREST;ASSIGNOR:CYCLOPS CORPORATION;REEL/FRAME:004994/0581 Effective date: 19880727 |
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AS | Assignment |
Owner name: ARMCO INC., OHIO Free format text: SECURITY INTEREST;ASSIGNOR:CYCLOPS CORPORATION;REEL/FRAME:006122/0039 Effective date: 19920424 |
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Owner name: CYCLOPS CORPORATION, NEW JERSEY Free format text: RELEASE OF LIEN AND SECURITY INTEREST IN GENERAL INTANGIBLES;ASSIGNOR:PITTSBURGH NATIONAL BANK;REEL/FRAME:006416/0437 Effective date: 19920424 |