US3016105A

US3016105A - Scaffold

Info

Publication number: US3016105A
Application number: US853196A
Authority: US
Inventors: Hugh L House
Original assignee: Individual
Current assignee: Individual
Priority date: 1959-11-16
Filing date: 1959-11-16
Publication date: 1962-01-09
Anticipated expiration: 1979-01-09

Description

Jan. 9, 1962 H. HousE 3,016,105

SCAFF'OLD Filed Nov. 16, 1959 2 Sheets-Sheet 1 Fig' 2' INVENTOR. H0575/ /vz/f Jan. 9, 1962 H. L. HOUSE SCAFFOLD 2 Sheets-Sheet 2 Filed Nov. 16, 1959 Patented Jan. 9, 1962 3,016,105 SCAFFOLD Hugh L. House, Rte. 3, Rogersville, Tenn.

Filed Nov. 16, 1959, Ser. No. 853,196 1 Claim. (Cl. 182-149) truss with a winch connected by cables to telescoping sections of the end frames whereby the platform is elevated and lowered by the winch.

The purpose of this invention is to provide a portable scaffold for holding workmen applying ceiling and wall surfacing panels in which the scaffold is collapsible and may readily be collapsed for transportation from one building or point to another.

Various types of portable and adjustable scaffolds have been used in building construction and particularly in applying wall surfacing panels. However, it has been found that retaining a surfacing panel against joists of a ceiling is not sufiicient as a scaffold for this use must also include an area upon which a worker for nailing the panel in position may stand.

With this thought in mind this invention contemplates a scaffold having an elongated platform with a supporting structure mounted on rollers and with the platform adjustably mounted on the supporting structure whereby the elevation of the platform is adjustable to compensate for the height of different ceilings. g

The object of this invention is, therefore, to provide a portable scaffold having an elongated platform wherein the platform is of sufficient length to accompany one man for holding a surfacing panel in position and another for securing the panel to ceiling or wall joists or studding.

Another object of the invention is to provide a scaffold having an elongated platform in which the elevation of the platform is adjusted by a manually actuated winch.

Another important object of the invention is to provide 'a portable scaffold having `anl yadjustable platform in which the platform is supported by end frames of a base structure and in which additional end frames may be provided for extending the length of the platform.

Another object of the invention is to provide a portable scaffold having an elongated platform adjustably mounted on a base structure in which the scaffold is of a simple and economical construction.

With these and other objects and advantages in view the invention embodies a base frame having corner posts with rollers on lower ends thereof and having vertically disposed sleeves positioned on the longitudinal center of the frame, and an elongated platform having vertically disposed rods slidably'mounted inthe sleeves of the end frames of the baise structure, posts extended upwardly Yfrom the platform and having chains extended between upper ends thereof providing a safety guard Vor fence, and a manually actuated winch mounted in the base structure and having cables extended to lower ends of the rods of the platform for elevating and lowering the platform.

Other features and advantages of the invention will appear from the following description taken in connection with the drawings, wherein:

FIGURE l is a side elevational View illustrating the improved scaold and showing a platform of the scaffold in a partially elevated position.

FIGURE 2 is an end elevational View of the scaffold taken on line 2-2 of FIGURE l with the parts in the positions shown in FIGURE l.

FIGURE 3 is an end elevational View taken on line 3 3 of FIGURE 2 showing one end of the platform of the scaffold with the parts shown on an enlarged scale and with parts broken away.

FIGURE 4 is an end elevational view showing one side of the platform with a portion of the opposite side hinged to the inner edge thereof and extended upwardly and with a socket for retaining one of the guard rail posts on one end. f

FIGURE 5 is a side elevational view illustrating an extension that may be provided at one 0r both ends of the scaffold showing an additional end frame spaced from an end frame of the scaffold and in which the end frame of the scaffold is shown in broken lines.

FIGURE 6 is a plan View showing an end of the scaffold and also showing an extension, as illustrated in FIG- URE 5.

FIGURE 7 is a view showing a sleeve for receiving the rod from the platform with part of the truss and end frame broken away, and the parts being shown on lan enlarged scale.

FIGURE 8 is an end elevational view showing a crossmember for mounting lower ends of the legs of the end frames.

FIGURE 9 is a plan view showing a double drum winch mounted below the truss of the scaffold and connected by cables to rods of the platform for adjusting the elevation of the platform.

Referring now to the drawings wherein like reference characters denote corresponding parts the improved scaffold of this invention'includes a platform having a front section 10 and a rear section 11 with hinges 12 connecting the sections of the platform,

rods

13 and 14 connected by angle bars l5 to the section 11 of the platform, posts 16 mounted in sockets 17 extended across the ends and on one side of the platform, chains 18 extended between upper endsof the said posts,

sleeves

19 and 20 mounted on ends of the truss 21 and through which the

rods

13 and 14 extend, a winch 22 carried by

angle bars

23 and 24 and positioned below the truss, diverging legs 25 extended from the sleeve Ztl of the end frame at one end of the platform, similar diverging legs 26 extended from the sleeve 19 of the end frame at the opposite end of the platform, struts 27 positioned at the ends of the base frame at both ends of the frame, bars 28 connecting upper ends of the struts 27 to the

legs

25 and 26, lower bars 29 extended transversely across the end frames and connecting lower ends of the struts 27 and

legs

25 and 26, sleeves 30 having spaced openings 31 for pins 32 therein secured, such v-as by welding, to the struts 27, wheels 33 mounted in shields 34 on lower ends of rods 35 positioned in the v sleeves 39, and openings 36 in the rods 35 and positioned to register with the openings 31v of the sleeves 30.

Lower ends of the

diverging legs

25 and 26 are supported ,byl the bars 28` and 29 and the bars 28 are supported by longitudinallydisposed cross bracing 37. The

legs

25 and 26 are also reinforced with transversely disposed

bars

38 and 39.

The truss 21 is provided with an upper bar 40, a lower bar 41 and diagonal bracing 42, and the ends of the bars 4t) and 41 are secured to C-shaped brackets 43 having flanges 44 at the upper ends and 45 at the lower'ends and the flanges overlap flanges 46 and 47 of corresponding C-shaped elements 4S secured, such as by welding, to the

sleeves

19 and 20.' The pins 49 which extend through the flanges of the

elements

43 and 48 provide pivotal connections between the end frames and ends of the truss. The

rods

13 and 14 are provided with spaced openings 50 in which cotter pins, or the like, 51 are positioned for retaining the rods of the platform in adjusted positions.

The platform is raised and lowered by the lwinch 22 which includes drums 52 and 53 on a shaft 54 retained in

bearings

55 and 56 and mounted on the

braces

23 and 24.

The drums are rotated by a hand crank 57 on a shaft 58 with a gear '59 on the shaft 58 meshing with a gear 60 on the shaft 54 on which the drums are positioned. A cable 61 extended from the drum 52 is trained over a pulley 62 on a plate 63 'of the truss 21 and from the pulley 62 the cable passes to a pulley 64 in a pulley block 65 at the end of the truss. From the pulley 614 the cable extends downwardly to an eye 66 on the lower end of the rod 14.

In the same manner a cable 67 extends from the drum 53 upwardly over a pulley 68 on the plate 63 on the truss and from the pulley 68 the cable is trained over a pulley 69 in a pulley block 70. From the pulley 69 the cable extends downwardly to an eye 71 on the lower end of the rod 13.

The pulley blocks 65 and 70 are supported by

hooks

72 and 73 from upper ends of the

legs

25 and 26, as illustrated in FIGURE 7.

The ends of the sections and 11 of the platform are provided with ears 74 that mesh with similar ears 75 extended from

sections

76 and 77 of an extension and the ears are pivotally connected by

pins

73 and 79. The

sections

76 and 77 are hinged together by hinges 80, similar to the hinges 12 shown in FIGURE 4.

Inner ends of the

extension sections

76 and 77 are supported by the ears and pins, forming hinges, and the outer ends are supported by frames 81 similar to the end frames of the scaffold shown in FIGURE 1. Similar sections forming an extension and also similar end frames or legs may also be provided at the opposite end of the scaffold. With the scaffold formed as illustrated and described, the length thereof may be extended to any suitable distance.

The

rods

13 and 14, which support the platform from the base structure, are provided with sleeves 82 to the upper ends of which angle bars 83 are connected, such as by welding and the angle bars 83 are secured to the angle bars by pins 84 which extend through openings in

vertical legs

85 and 86 of the angle bars.

The sections 10 and 11 of the platform are mounted on transversely disposed bars 87, the ends of which are supported by braces 88 and S9, and the ends of the bars 87 are provided with locking elements 90 which extend through openings 91 in clip angles 92 whereby the platform is locked in position upon the supporting elements.

The scaffold is provided with a ladder having upper sections 93 with sliding or telescoping lower sections 94 and the upper ends of the side rails of the upper section 93 are provided with openings 95 that mesh with lugs 96 on the sides of the upper platform whereby upper ends of the rails are secured to the lugs 96 by pins 97, such as cotter pins or the like. The ladder may be located at any suitable point and a conventional ladder with sliding side rails may be used.

By this means a portable scaffold is provided upon which a plurality of men or workers may operate and one worker may hold a sheet of wall surfacing material while the sheet is secured in position -by another worker.

By removing the cross-braces 37 and truss 21 the base frame may be collapsed so that with the sections of the platform folded together as illustrated in FIGURE 4, the portable scaffold may be folded to a comparatively small size for transportation and storage.

The parts are readily set up for use and the parts may be made of suitable materials.

It will be understood that modifications, within the scope of the appended claim, may be made in the design and arnangement of the parts without departing from the spirit of the invention.

What is claimed is:

In a portable collapsible scalfold, the combination which comprises transversely disposed end frames, rollers on lower ends of the end frames, cross-braces connecting lower portions of the end frames, a truss extended between upper portions of the end frames, means pivotally connecting ends of the truss to the end frames, vertically disposed sleeves mounted in the end frames, a pair of hinged sections providing a platform, rods extended from the platform through the sleeves of the end frames for supporting the platform, a winch carried by the truss and connected by cables to the lower ends of the vertically disposed rods for manually elevating the platform, additional end frames spaced from the said end frames, and hinged sections providing extensions at the ends of the platform and connected to the sections of the platform, the end frames of the extensions being connected to the end frames of the scatfold;

References' Cited in the le of this patent UNITED STATES PATENTS 555,260 McLaughlin Feb. 25, 1896 583,384 Maust May 25, 1897 949,093 Sherwood Feb. *15, 1910 1,332,011 Weinberg Feb. 24, 1920 2,062,473 Norton Dec. 1, 1936 2,086,255 Cashier July 6, v1957 2,692,169 Phillips Oct. 19, 1954 2,706,662 Brown Apr. 19, 1955 2,883,241 Adolfson Apr. 21, 1959