US2632676A - Scaffold - Google Patents

Description

March 24, 3 R. a-EvERETT, SR

SCAFFOLD 2 SHEETS-SHEET l INVENTOR. RUFUS B. EVEEETZ' 52.

WQZMM/fimm J Una/M02 Filed Jan. 23, 1951 ATTOE/VEYS.

March 24, 1953 R. B. EVERETT, SR 2,632,676

' SCAFFOLD Filed Jan. 23, 1951 2 SHEETSSHEET 2 J INVENTOR. A v ,eurus a. sveesrr, e-

' WZQZmm/ium A T'TOE/VE V5 assembled.

Patented Mar. 24, 1953 UNITED STATES PATENT OFFICE SCAFFOLD Rufus B. Everett, Sr, Memphis, Tenn. ApplicationJanuary 23, 1951, SerialNo.i207,3G1

I 2 Claims. 1

This invention relates to scaffolds, and more particularly to a scaffold which is suitable for use forpainting, masonry-work; plastering, and" similar operations.

A main objector the invention is to provide a noveland improved scaffold which is simple in constructibn, which maybe easily assembled and disassembled, and wherein'th'e parts may be read- V by adjusted to change 'thelevels thereof;

A further object of the invention is" to provide 1 an improved scaffold which involves very simple use, andwhich may be readily'assembled and dis- Further objects and advantagesof" the invention will become apparent from the following I description and claims, and from the accompa ne drawings, wherein:

Figure 1 is a perspective viewof an improved I scaffold in accordance with the present invention, 7 shown set up for use;

Figure 2 is; a transverse, vertical, cross-sectional'view taken on line 2--2 of Figure l; V

Figure 3" is an enlarged, cross-sectional, detail view taken on line 3'3 of Figure 1;-

Figure 4 is a cross-sectional, detail view taken on line 4--4" of Figure 3;

Figure 5 is a cross=seetional, detail view taken Figure, 6 is an enlarged, fragmentary, perspective, detail view; showing one of the step elements of thesoaff'ol'd of Figure 1', the tread member of the-step elementbei'ng shown'separated from: the

risermember;

Figure 'iisan enlarged; perspective, detail view showing the top portionsof" one of the vertical standardsof the scaffold of Figure 1", the elements 7 oi said one of the standards being shown in sep ar'ated' positions Referring to the drawings, the scaffold" commember which is received between the iower ends or the uprights l3 and M, as shown in Figure 2, andzextend's for substantial distances on opposite sides of the standard The plate member I! is formed with a notch it at its mid-portion in angles to the plate member if and which is generally similar in shape therewith. As shown in Figure l, the plate members IT and Iii definea supporting base for the standard II and maintain the posts defined by the uprights l3 and l4 and their interveningspacer blocks l5 in a vertieai position. it will be further understood that the standard may be disassembled readily by merely removing the p'late members I"! and I9 from engagement with the notched lower portions of the uprights l3 and Hi. I From Figure- 1 it will be seen that the plate member ISisfOrmed with the relatively large, upwardly opening notch 2i) at its intermediate portion which receivesthe notched lower ends of the uprights l3 and i4, and which also receives the notched intermediate 2 portion of the plate member IT, as above de- 1 spaces lfi'of the standard and which are locked therein by pin members29 extending through the reduced bar portions 21 and 28 and openings provided in the uprights I3 and I4. It will be readily understood that the barmembe'rs 23' and 24 may be detached by removing the respective pin members 25, 26 and 29.

Designated at 3| and32 arerespective parallel,

' vertical uprights forming the main portion of the standard i2, said uprights being secured through spaced block members 33 arranged similarly to the block member i5 of the standard The lowerends' of the uprights 3| and" 32 are interlocked with respective, transversely arranged plate members l1" and I9, said plate members H and is being notched in the same manner as the plate members l1 and Hi, and the lower Whiilh is received-the notched mid-portion of another plate member is which extends at right ends of the uprights 3| and 32' being. notched to interlock with the transversely arranged plate members I? and I9 in the same manner as in the case of standard I From Figure 1 it will be noted that one side of the plate member l9! has a horizontal top edge and that a vertically rising'plate member 35 is secured to the plate member l9" adjacent the upright 3|. The plate member 35 is formed-with the upwardly facing,

. cal bar 40. gated roller which is rotatably mounted on a vertical notch 36. Designated at 31 is a step member having a tread portion 38 and a notched riser portion 39 adapted to lockingly engage in the notch 36 of the vertical plate member 35 in the manner shown in Figures 1 and 6, thereby detachably securing the step member 31 in the position shown in Figure 1. Similarly, the outer portion of the plate member I9 is formed with an upwardly opening, vertical notch which is adapted to lockingly engage with the notched lower portion of another step member 31, as shown in Figure l.

Secured to one outer end of the plate member I1 is a vertical bar member 40 formed with the spaced openings 4!. Designated at 42 is a bar member which is releasably secured at one end to the bar member 40 by a removable pin 43 and which is received between adjacent blocks 33 of the standard [2. The pin member 43 may be inserted through a selected opening 4| of the verti- Designated at 44 is a horizontal, elonlength of pipe 45, said length of pipe being suspended from the bar member 42 by a chain 46 passing through the pipe 45 and extending. through openings 41, 4? formed in the opposite end portions of the bar member 42. The chain member is secured at 48 in' any suitable manner, as for example, by providing a hook on the end of the chain member which may engage with a link of the chain. Designated at 49 is a board having one end portion received between the bar members 23 and 24 and having its other end portion received between the bar member 42 and the roller 44, Pivoted at B, 50 to the bar member 42 are respective eccentric discs 5!, 5| which extend ,belowthe bottom edge of the bar member 42 and which lockingly engage with the top surface of the board 49, preventing said board 49 from rising vertically and securing the board against vibration. In the position shown in Figure 3, the eccentric disc members 5|, 5! exert a frictional clamping action on the board 49 and secure said board against moving lengthwise. However, when it. is desired to remove the board 43 from the scaffold, the eccentric rollers 5|, 5] are rotated to elevated positions, thereby releasing the board 49 and allowing the board to be withdrawn lengthwise from the scaffold.

Designated at 52 is a shelf board which is supported on respective bar members 53, 53 received between successive blocks l5, l5 of standard I I and successive blocks 33, 33 of standard I2 and releasably secured by respective pins 54 and 55.-

The pin 54 extends through aligned openings 30 in the uprights l3 and I4 of standard II and extends through an opening in the end portion of the bar member 53. The pin member 55 extends through aligned openings in the uprights 3| and .32 of standard I? and extends through an opening in the end portion of the other bar member The bar members 53, 53 may be readily detached by removing the pin members 54 and 55. The board 52 provides a shelf for any desired materials for use in the work being done, such as bricks, mortal, paint and the like.

Designated at 56 and 51 are respective plate members having reduced, horizontally extending portion received between adjacent blocks l5, l5 at the upper end of the standard ll and adjacent blocks 33, 33 at the upper end of the standard [2 and detachably secured in the upper ends of the respective standards II and [2 by removable pins 58. The outer portions of the plate members 56 and 51 are formed with vertical, upwardly facing notches 59 which lockingly receive notched end portions of a rail member 60. Designated at BI is a tray member to the opposite edges of which are secured the respective notched block members 62, 62 which slidably engage the top margin of the rail member 60. The tray member BI is employed for supporting plastic material, such as plaster, mortar, or the like, said tray member being slidable from one end of the scaffold to the other, whereby the plastic material may be moved to any convenient position relative to the worker using the scaffold. It will be readily apparent that the rail member 60 and its supports 56 and 51 may be readily detached from the uprights H and I2 when it is desired to disassemble the scaffold.

When the scaffold is set up in the manner shown in Figure l, the worker may conveniently mount the scaffold by ascending the steps 31' and 31 and stepping upon the board 49. The position of the board 49 may be changed as the work progresses to any desired height by engaging the ends of the bar members 23 and 24 in suitable spaces It of standard I! and shifting the connections of said bar members with the vertical upright 2|, and

by similarly changing the position of the opposite bar member 42 so as to maintain the board 49 in a horizontal position.

While a specific embodiment of an improved scaiiold has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the in vention except as defined by the scope of the ap- V pended claims.

What is claimed is:

l. A scaffold comprising a pair of vertical standards, each standard being formed of a pair of spaced uprights having spaced blocks therebetween forming uniformly spaced horizontally extending openings therethrough, a supporting base for each standard, respective vertical support bars secured to the supporting base portions of said standards and spaced outwardly from said standards, a pair of horizontal bar members secured to one of the vertical support bars and received in adjacent horizontally extending openings of the associated standard, an additional horizontal bar member secured to the other vertical support bar and received in a horizontally extending opening of its associated standard, a board disposed adjacent one end thereof between said first-named pair of horizontal bar members and disposed adjacent its other end below said additional horizontal bar member, an elongated horizontal roller secured to said additional horizontal bar member and disposed beneath said board, a plurality of eccentric discs secured to said last named bar member engaging said board to limit upward movement thereof, a further pair of horizontal bar members received in the openings of said standards, a horizontal shelf board supported on said further pair of horizontal bar members, a still further pair of horizontal bar members received in the openings of said standards above said shelf board, said last-named bar r 6 vertical standards, and a board received between REFERENCES CITED said bars said clamp comprising an additional The following references are of record in the horizontal bar member adapted to be secured to me f this patent: the other standard, an elongated horizontal roller secured to said additional horizontal bar member 5 UNITED STATES PATENTS and adapted to be disposed beneath said board. Number Name Date "and a plurality of depending disc members essen- 432,996 Gardner July 29, 1890 trically pivoted to said additional horizontal bar ,2 5 Knippe May 3, 1892 member and arranged to engage said board to 510,057 Willi ms Dec. 5, 1893 limit upward movement of the board. 1 835,059 Curley N v. 6, 1906 944,406 Barcsai Dec. 28, 1909 RUFUS EVERETT, 966 80 Daisley Aug. 9, 1910 1,577,835 Mann Mar. 23, 1926

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