US2582625A

US2582625A - Scaffold end frame

Info

Publication number: US2582625A
Application number: US722704A
Authority: US
Inventors: Roscoe H Dunn
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-01-17
Filing date: 1947-01-17
Publication date: 1952-01-15
Anticipated expiration: 1969-01-15

Description

Jan. 15, 1952 R, H DUNN scAFFoLD END FRAME 3 Sheets-Sheet l Filed Jan. 17, 1947 i x o f b 1905605 H. DUN/V Mm M/m Grammy Jan. 15, 1952 R- H DUNN 2,582,625

SCAFF'OLD END FRAME Filed Jan. 17, 1947 3 Sheets-Sheet 2 JMW Q Roscos H. DUNN Jan. l5, 1952 R DUNN 4 2,582,625

scAFFoLD END FRAME Patented Jan. l5, 1 952 v 2,582,625 sefAFFoLD END'iFltAME RoscoerH."-Dunn,z Bloomington, Ill; 'ljllicaflf January L17, 1947; SlilfNO. "722;7 04

Y il; 'This' "in'vention'*relatesfto lscafi-'old's,L and imor'e' particularlyl to lthe= construction of fthe upright parts'dand themembers'adaptedfto brace/these' parts together.

lIt isan object of 5the present ffinve'ntion'v l:to provide a scaffoldin'gffor '-usefb'y"paintersfand othersffwh'ich'fcan be consti-"ucted-as--the work" upon the.' 4building progresses upwardly# and wherein the elevationof'ftheplatfcrnr-at i diffrend-times can be effected-with minimumf-eiort and by -'xtures which' can be1 ea'sii'ra-n'd` quickly applied. 1

YIt is another objectoflthe-present invention toV provide in scaffoldingupri-giit structures v`located at the respective :corners of thescaffldingi' which compriseftwo laterally spaced, vertically extend# ing pieces so arranged as v#te provide an'spaee through ywhich end ibi-*aces can 'be slid 'andJad-l justed to a: position `wherebythey'"will "support the platform, when1the--platfo`rm h'asbeenxreleased from the e1eVat-ing=1'mechanism.

standing-'of the invention, reference may Joe *had tothe following detailed Adescription taken-'Jiri'y connection lwiththeaccompanyingv'drawings in which:

Figure 1 is -aperspectiveiviewof-f`a portion-of-a scaffold showing a platform elevated andf retained in place vby horizontally :extended-supports '-be tween multiple piece' upright structures* and showing; the longitudinally extending braces fco'n' nected between :the yhorizontally L extending fs-up- Figure 2i's Van endlelevationallviewof. the-scafi foldingishown in Figure-1.

Figure 3 is Van enlarged cross-sectional rvie'w taken on line A3*-3 Sof Figure 1,. and? looking-in fthe direction of the arrows thereof, and looking `upon cneof the .pin fasteners.

Figure @-4 f isi .i an f enlarged fcross-'sec'tional v"viewtaken Ondine-4 4 offFigure 1,fandlooking'vbrcadi sidefupon' one-of the pinfa-steners.

Figure 5 is a-1cross-sec'tionalf View Staken-"on line 5`5` v'of "Figure 1, and looking)y in the direction 1 of thearrows thereo'fland upon one-oftheklongitudi nelly-extendingbracing members. y

Figure I6 is anelevtional 'view :looking-upon' the foot portionfof. oneio'f thefvertically.:ext-end'r ing structures:

Figure .'Tis anferilar'ged fragmentaryviewilooki ing upon the edge 0f one of the platesf'iservin'g.

54 oiaimsi (chiama-2i.,

vertical-ly@ extending 'structure' intermedi'atedts length.

FigureFQ is faffr'agmentary .front elevatinalview of a constructionshowingrnultiplefplatfcrms with `one platform .beingf raised by `the other, and

slfi'ow'fing:y bracing=-rods` adapted to be ih'ook'edf bell` tween; individual vertically extending structures; to tie' them togetheri at idierent -heiglit's f along the scaffold. v l

Figure V10""'is a fragmentary view-flocking in plan upon oneJ ofthe` cable-hoisting devices.v

Figure V11 is a vfragmeritary view of fa modied form'of `-`foot support vfo`r" the Vlower zendof one of the-vertically'extendingstructures? 'Figure-"12 is al A'fragmentary view showing'one' ends of-the-vertically 'exten-ding pieces together when extending the h'eighifofthe scaffold.

Figure i3 is a lplan view, partlyfinsection, of a modication utilizingsingle post uprights.'

Figure '14 is arr'agmentarylelevation'of a"modi 'caton of the extending members using 'a' hinged connection instead'of plates; l Figure 15 is a .fragmentary elevationisimilar to .Figure 14,' showingv one ofthehinge members partly unsecured'for folding of `t`he extension members when they are being assembled ior dis-- assembled. 4 Y?.

Figure 16 is a side elevation..of.the hoisting de. vice showing the ratchetretai-ner..

Referring now .particularly .to Figures yl and.2,. 21v represents one. of the'verticallyextending structuresserving. as -the verticalsupport for the scaffold. There will be several ofithesevertically extendingy structuresf depending upon-` theb size.` of thev scaffold to-fbe constructed.- Each offftheseverticallyextending .structures f- 2 i -comprises :twouprights 1 foripeces -r22 vand A123 f which' are :held laterally-spaced fromfone'another .byspacers-24 located at l, different :elevations .throughcutv.: the

height f of.h i. each structure. These spacers -2 i are connected by bolts 25 extending through the spacers ,fand l:tl'urougl'r the r4pieces 2 2 f andl 23 rtouretain r.the Verticalfilspacers f24 at the .,properaelevwtion. .Therelaref two of these'spacers :2 esandfthere aretwobolts 25.1for respectively retaining ,thetwo' in -th'e 'ends' of horizontally extending"supports` and brace :membersfS I .i .The :brace :membersii are .f extendedv betweenzxtwo'. verticall supporting plates 32connected to the ends of the brace mem-l bers 3| by screws 33 and clamped against the side edges of the'pieces 22 and 23, whereby to prevent the separation of the vertical structures 2| from the braces 3| and at times to permit the-bracesv to be located above the spacers 24 with the fastener projection 21 out of the opening 26. These plates 32 will retain the bracev 3| temporarily-V during assembly of the device until such time rod 56 is tightened, it will serve as a brace for the outer end of the member 52.

At times when it is desired to extend the height of the vertical structures 2|, there may be connected to the side pieces in place of the crossbars.

' of the scaiold.

In Figure 12, there is shown a different form of construction for extending the height of the vertically extending structures 2|. In this instance, the side plates, as indicated at 6| and 62,

x are connected to the side edges of the pieces 22 as spacers 24 have been located between the

pieces

22 and 23. Platform boards 34 are carried upon the brace members, 3| and as the brace members are elevated, the platform boards 34 will likewise be brought up upwardly. The upper ends of the vertical structures 2| can be tied together by

members

35 and 36 connected to the opposite faces of the vertical structures 2| by bolts 31. Between these

tie members

35 and 36 can be located a pulley device 33 over which a hoisting cable 39 is extended for connection with a cable hoist device 4|. The opposite end of the cable is extended through the platform boards 34 for connection with the laterally extending supports or braces 3|. The workmen will stand upon the platform boards 34 and turn a crank 42 to elevate themselves to the desired level, the clamping plates 32i subadjacent the platform being rst loosened. Thereafter the clamping plates 32 can be tightened upon the members 43 having angle pieces 44 extending over the ends of the same. These members 43 are dropped down over the braces 3| so that the angle members 44 will extend thereover. A vertically extending portion 45 willl engage the side of the brace 3| so as to retain the brace 3| and the adjacent vertically extending structure 2| against longitudinal displacement.

Referring now to Figure 6, there is shown one form of foot support for the vertically extending structures 2|. This foot support may comprise a series of transversely extending members 46 vertically spaced from one another and extended across the edges of the

pieces

22 and 23 for connection with vertically converging

pieces

48 and 48 bearing upon the sides of the

pieces

22 and 23 and'at their lower ends connected to a bottom transverse piece 49. The foot support may alsol contain short vertically extending pieces 5| extending along vthe sides vof the side pieces 22 and v Referring now to Figure' 1l, there is shown a modified form of foot construction.' In the arrangement shown in this gure, there'is provided a laterally extending ground-contacting projection 52 which is connected at its inner end by means of bolts 53 to the lower endof the vertically extending structure 2|. On the outer end of the member 52 are a plurality of openings 54 adapted to receive a pinv 55 for connecting a tie rod 56 thereto. This `tie rod 56 has a turnbuckle 51 for tightening the rod between the member 52 and the structure .2|... When the tier and 23, the

crossbars

35 and 36 being removed. Bolts 63 extend between these plates 6| and 62, and when their nuts 64 arev tightened thereon, the plates 6| and 62 will be brought into clamping engagement with the edges of the

pieces

22 and 23.

Referring now particularly to Figure 9, there is shown a construction where there are more than two vertically extending supports 2| spaced from one another. These supports may carry a top platform 34 and a lower platform 66. The lower platform can be supported from the upper platform by means of rods 61 having hooked foot ends 68 thereon. The platform 34 may have supports 69 connected to its bottom face. Over these supports the hooked ends 68 of the rods 61 may be extended. The rods 61 will extend downwardly through the lower platform 66 to be hooked about a support 1| for the lower platform. By tying these two platforms together, they may be vertically adjusted at the same time.

Likewise, rods can be used for tying the vertically extending structures 2| against lateral separation. For this purpose there is provided a hook 12 adapted to be connected upon a ring 13 on one of the vertically extending structures 2| and in such a manner that it can Ibe swung downwardly and fitted into a staple 14 on another structure 2|.

The longitudinally extending members for the structure shown in Figure 9 will extend along more than two of the vertically extending structures 2| and may be connected to the structures in the manner shown in Figure 8 by a U-bolt 15 extended about one of the pieces of the vertically extending structure 2| and secured by nuts 16 engaged with one of the side faces of the longitudinally extending braces. The brace is indicated at 11.

In Figure 13 is shown a modification of the uprights, wherein a single post 2 la replaces the pair of vertically

members

22 and 23, and a pair of brace members 3|a and 3|b replace the singleV brace members 3| of Figure 1. 'Ihe brace members are connected to the post 2 la by bolts which are removed when the platform 34 is to be raised.r

In Figure 14 is shown va modification of the extending'members 2|a which are connected together by means of a pair of hinges 58a and 58h in lieu of extension plates 58 in Figure 7, for convenience and safety in assembling the vertical supports.

One-half of either of these hinges may be unsecured, as shown at 58h in Figure 15, and one of the-vertical members 2|a folded in either direction upon the other depending upon which hinge portion is unfastened.

In Figure 16 is shown the cable hoist device generally designated 4|, and comprising a cable drum 39a rotatably supported in a shaft-bearing frame 41a and provided on each end thereof with a ratchet Mb and pawl llc adapted to securely lock the drum at both ends when the platform 34 is elevated to suitable position.

Having now described my invention, I claim:

1. A scaffold end frame comprising a pair of identical vertically extending pieces, each including a pair of cooperative pieces, spacers transversely disposed between the pieces of each pair for retaining the pieces in spaced relation, plat form support members disposed transversely between the pair of pieces and having their opposing ends positioned between the pieces of each pair, clamping plates detachably affixed transversely to the opposing ends of the members and clampingly engageable with the outer edges of the pieces of each pair for ailxing the members between the pieces, said spacers between the pieces of each pair being arranged in pairs and each pair of spacers being in spaced relation, fasteners carried by the members and each fastener having a depending projection received between the spacers of each pair.

2. A scaffold end frame comprising a pair of identical vertically extending structures, each including a pair of cooperative pieces, spacers transversely disposed between the pieces of each pair for retaining the pieces in spaced relation, platform support members disposed transversely between the pair of structures and having their opposing ends positioned between the pieces of each pair, clamping plates detachably aiiixed transversely to the opposing ends of the members and clampingly engageable with the outer edges of the pieces of each pair for aiiixing the members .between the structures, said spacers between the pieces of each pair being arranged in pairs and each pair of spacers being in spaced relation, fasteners carried by the members and each fastener having a depending projection received between the spacers of each pair, and each of said members having Yvertical openings formed adjacent to its opposing ends and upstanding projections on the fasteners received in said openings.

3. A scaffold end frame comprising a pair of identical vertically extending structures, each structure including a, pair of spaced pieces. spacers transversely disposed between the pieces of each pair for retaining the pieces in spaced relation, platform support members disposed transversely between the pair of structures and having their opposing ends positioned between the pieces of each pair, clamping plates detachably affixed transversely to the opposing ends of the members and clampingly engageable with the outer edges of the pieces of each pair for aiixing the members between the structures, said spacers between the pieces of each pair being arranged in pairs and each pair of spacers being in spaced relation, fasteners carried by the members and having means cooperatively engageable with the spacers of each pair and with the ends of the platform support members.

4. A scaffold end frame comprising a pair of identical vertically extending structures, each structure including a pair of spaced pieces, spacers transversely disposed between the pieces of each pair for retaining the pieces in spaced relation, platform support members disposed transversely between the pair of structures and having their opposing ends positioned between the pieces of each pair, clamping plates detachably affixed transversely to the opposingends of the members and operatively engageable with the outer edges of the pieces of each pair for aixing the members between the structures, said spacers between the pieces of each pair being arranged in pairs and each pair of spacers being in spaced relation, fasteners carried by the members and each fastener having a depending projection received between the spacers of each pair.

ROSCOE H. DUNN.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 295,592 Subers Mar. 25, 1884 378,102 Moss i Feb. 21, 1888 428,769 Dodge May 27, 1890 588,982 Gray Aug. 3l, 1897 744,194 Harrison Nov. 17, 1903 863,708 Flatley Aug. 20, 1907 964,233 Gilliland July 12, 1910 1,168,868 Ericsson June 18, 1916 2,089,871 Adams Aug. 10, 1937 2,289,141 Oertle July 7. 1942