US1733333A - Scaffold - Google Patents

Description

Oct, 29, 1929. H CQPLAN 1,733,333

SCAFFOLD Filed Dec. l5, 192'?" :t: if@

:f www /Z la Patented Oct. 29, 1929 l l UNITED STATESPATENT OFFICE Application led December 13, 1927. Serial No. 239,826.

This invention relates to'scaffolds, a strucside diameter of the standards 8 is slightly ture employed around and inside of buildings greater than the outside diameter of the studs Jfor supporting workmen and structural or 14 so as to telescope upon said studs. Each other materials, so as to facilitate the workbody l isprovided with a horizontally eX- Y 5 men perforimng various operations at diitertending slot 16 to receive one end of one of '$5 ent levels. the cross members 10. The cross members One of the objects of this invention is inare each provided with a gain 17 near each surance of safety to those using the scaffold. end so that when said cross members are Another object is simplicity, and the ease entered endwise into the slots 16 the gains 10 with which the scaifold may be erected and may be caused to register with the bottom 6l) taken down. walls of the slots andthe cross members then Other objects and advantages will appear dropped to cause said bottom walls to be rein the subjoined detailed description. ceived in the slots. This prevents endwise The accompanying drawings illustrate the shifting of the cross members 10 when in invention: place. e5

Figure 1 is a plan view of a scaffold con- The scai'old` above described, is built up by structed in accordance with the provisions placing the required number of bases 7 in two of this invention, a building structure, ador more rows on the earth or other supportjacent to which the scaffold is positioned, being surface, telescoping upon each of them ing indicated in broken lines. one of the standards 8 so as to provide a tier 70 Figure 2 is a front elevation of Figure 1. of standards, inserting one of the joint mem- Figure 3 is an enlarged fragmental view bers A9 in the upper end of each of the standof the scaii'old, partly in section. ards 8 that have been erected so as to pro- Figure 4 is a plan View of Figure 3. vide a tier of such joint members, and con- Figureisaplan View, partly in section, of necting each of the cross members 10 to a 'Z5 a modified joint construction. pair of adjacent joint members 9 one of Figure 6 is an elevation, partly in section, which is in one row and the other in another on the line indicated by 6-6, Figure 5. row so that each cross member 10 extends at First, referring to Figures 1 to 4 inclusive approximately a right' angle to the surface y of the drawings, the scaifold comprises any of the structure A that isto be built or worked 30 desired number of base members 7, standupon. Then other standards 8 will be tele? ards S, joint members or couplings 9, and scoped upon the joint members 9 to form a cross members 10. second tier of standards and within these Each base 7 comprises a horizontally exlast mentioned standards still other joint tending flange 12 adapted to rest on the earth members will be telescoped to form a second 85 or other supporting surface, and each base tier of joint members. The joint members also comprises an upwardly projecting stud and standards will thus be assembled to form 13 which, if desired, for the sake of lightalternate tiers of standard and joint memness may be tubular, as shown. The end bers to build up the scaffold to the height de- 40 portions, at least, of the standards 8 are tusired. As soon as the joint members are in 9o -bular and, in this instance, the standards for place the cross members 1() will be connected their entire length are tubular. The inside therewith. The Hoor members, notshown,

diameter of the lower end of each standard 8 are placed upon the cross `members 10 in a is slightly greater than the outside vdiameter manner well understood in this art for sup- .'45 -o the Astud 13 so as to telescope upon said porting the workmen and materials. 95

' stud. It may be required by law, in some in- Each of. the joint members 9, in this instances, or it may be otherwise desirable to stance, is hollow, for the sake of lightness, brace the scaffold longitudinally and, accordand comprises end studs 14 projecting vertiingly, the coupling bodies 15 may be provided cally from an intermediate body 15. The inwithl horizontally projecting studs 18, said 100 is provided with a head which holds the bolt against 'endvvise movement in one direction. Brace members 21 are provided near their ends with holes 22 so as to engage over the studs 18. Eachy brace memberl 21 connects adjacent diagonally opposite studs 18 longitudinally of the scaold, as clearly shown in Figure 2. The brace members 21 are prevented from sliding off of the studs 18 by Cotter pins 23, or their equivalents, insei-ted through vertical holes 24 in the studs 18. The system of brace members 21 may be used for the outer side only of the scaffold and the inner side of the scaffold may, if desired, be anchored to the structure, along side of which the scaffold is placed. This is done by providing fastening members 25, each of which forms a loop 26 around one of the standards 8. Each fastening member 25 also comprises a pair of legs 27 projecting from the loop 26. The member 25 is applied to the standard by bending it around the same and the legs 27 are then secured to one of the Window frames B, or other suitable member,

' of the structure A. In this instance, the legs 27 are secured in place by nails 28.

A modification of the joint members is illustrated in Figures 5 and 6 and the elements that correspond in function with those above described are. indicated by the same reference character With the addition of the letter af In this instance, the slot 16 is omitted and the body 15a is provided With a fork 29 and the opposite members of said forli are provided With vertically alined holes 30 to receive a pin or bolt 31. r[he pin 31 may have a head 32 to prevent it dropping out of the holes 30. `When this form of joint member is employed, the associated cross member 10a is provided near each end With a hole 17a so that, when the cross member is inserted in the slot 16a of the fork 29, the pin 31 can be inserted through the holes 30, 17 so as to secure the cross member to the joint member.

I claim:

A scaffold comprising standards, joint members mounted on the standards and provided with horizontally extending slots, and cross members engaging in the slots and provided with gains to receive the bottom walls of `the slots.

Signed at Los Angeles, California, this 2nd day of December, 1927.

RRY CPLAN.

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