US2311210A - Scaffold - Google Patents

Description

Feb. 16,- 1943. s, CASTNER 2,311,210

I SCAFFOLD Filed Feb. '20, 1941 2 Sheets-Sheet 2 i U 10W 24 17 wm ml 1 J Patented Feb. 16, 1943 UNITED STATESFPATENT OFFICE SGAFFOLD Theron S. Castner, Minneapolis, Minn.

Application February 20, 1941, Serial No. 379,746

7 Claims.

This invention relates to scaffolding apparatus angular sections and olTset sections without the necessity of resorting to special features of construction except in some slight details. Another object of the invention is to provide a scaffolding structure including upright members and scaffold board brackets with improved means for connecting the brackets to the uprights so that the brackets are easily adjustable vertically with respect to the uprights and wherein an entirely safe and rigid connection is made between the scaffold board bracket and the upright. Another object of the invention is to provide an upright and bracket means as well as a brace connector wherein the bracket can be connected to the upright in the same manner and with the same means as the brace connector or wherein the bracket itself can be utilized to properly support the brace connector.

v These and other objects and advantages of the invention will more fully appear from the following description made in connection with the accompanying drawings, wherein likereference characters refer to the same parts throughout theviews, and, in which:

Fig. l is a fragmentary diagrammatic elevation of a building structure with my scaffolding "erected thereagainst;

' Fig. 2 is a fragmentary diagrammatic plan of a portion of a building structure showing a number of sections of erected scafiolding;

Fig. 3 is an enlarged section taken on the line 3-3 of Fig. 2;

' Fig.4 is an enlarged detail of a particularly type of bracket arrangement;

Fig. 5 is a perspective View of a scaffold board bracket;

Fig. 6 is an enlarged perspective view of a brace connector; and

Fig. 7 is a perspective view of a supporting foot for one of the upright tubings.

: The scaffolding includes a plurality of uprights made of sections of tubing l0 having a plurality of oppositely disposed openings ma spaced longitudinally of the tubing, and the'tubin'g sections angle iron 23, as also shown in Figs. 3 and 5,.extends above the horizontal bracket member ll to prevent the scaffold boards .24 from slipping Ill may be coupled together by suitable couplings II to form uprights of the desired height. The uprights may be anchored in any desired position by means of braces l2, each of which may be anchored at an end to-a portion of the building structure with suitable fastening means such as nails. Means for anchoring the braces I! to the uprights I0 is illustrated in Fig. 6 which shows a brace connector l3 made up of a pair of upper and lower U-shaped elements connected by'pairs of webs l4 and a single web l5. The webs id have openings l 6 formed therethrough intermediate their ends. The brace connectors l3 can be vertically positioned with regard to the uprights [0 by placing nails or pins through a pair of aligned apertures Illa. in the uprights Ill and permitting the brace connectors L3 to rest thereupon. The end of a Wooden brace member I? is then inserted between the pairs of webs l4 on the connectors 13 and the braces may be secured to the connectors l3 by nails driven through one or more of the openings it in the webs l4. Of course, it should be understood that the U-shaped members of the brace connector I3 are of such size as to permit the brace board l2 to extend across the arms of the U-shaped members without being obstructed by one of the uprights IEI which lies inthe closed portion of said U-shaped members.

As indicated in the upper portion of Fig. 2 a single brace connector can be used for a pair of the braces l2 by inserting the end of one brace in the connector and then nailing the other brace to the exposed end of the first brace.

In Fig. 5 there is shown a perspective view of a scafiold board bracket A which includes a substantially horizontal upper member I! having a u-shaped end portion [3, and the arms of said U-shaped portion are provided with pairs of aligned apertures I9 and also a pair of smaller aligned apertures 20; A lower bracket member 2| is connected to the upper bracket member I! by means of vertical pieces of angle iron 22 and 23. The vertical iron 22 connects the bracket members I! and 2| adjacent the inner ends of said members, and, the vertical angle iron 23 connects their outer ends and at said outer ends the two bracket members are closer together, thus positioning the lower bracket member 2i at an incline as is clearly shown in Figs. 3 and .5. The

outwardly off. the ends ofsaid scaffold board brackets. On the inner or left-hand end of the bracket A, as viewed in Fig. 5, the lower member 2| is provided with an angular offset 25 which with the left-hand end of the member 2! forms a generally U-shaped end portion which is disposed oppositely to the U-shaped end is of the upper bracket member If. The U portion of the member I? is adapted to lie partially around one side of an upright H3, and the U-shaped end of the member 2| will lie partially about an opposite portion of one of the uprights in downwardly spaced relation thereto. A nail or pin can then be inserted through the opening 2! in the upper bracket member [I and through a pair of aligned openings la in the upright iii to prevent the bracket A from slipping downwardly relatively to the upright 19. an upright the brackets A have their upper portions l1 disposed in a horizontal plane as is clearly shown in Fig. 3.

It should, of course, be understood that the brackets A can be placed on the uprights if] at any desired elevation by tilting the brackets and slipping the U-shaped end portion I 3 around the uprights and then placing the angular extensions 25 partially about the uprights.

As indicated in Fig. l the brace connectors l3 can be placed about the uprights It between the upper and lower portions l I and 2| of the brack- When applied to V ets A to retain said connectors in position. Thus it is unnecessary to provide additional means for preventing said connectors 3 for moving vertically on the uprights Ii). Furthermore, the uprights 22 on the brackets A are placed inwardly V secured to the uprights by brace connectors l3.

These center and right-hand uprights lb have scaffold board brackets A mounted thereon and extending inwardly toward the building structure B. Scaffold boards 24 are placed upon and extended between the brackets A. The left-hand upright if] in the upper left corner of Fig. 2 has a scaffold board bracket A mounted thereon in the manner described above. Extending between the U-shaped portions of the brackets A on the three uprights at the upper portion of Fig. 2 are tie rods 25, and ends of the tie rods 28 extend through the apertured U-shaped ends 8 of the upper bracket member I? and are secured against displacement by pins or nails 2?, such as are shown in Fig. 3. These tie rods further brace the structure to lend rigidity to the entire unit.

It should be noted in Fig. 2 that the tie rods 26 at the adjacent ends of a pair of rods are placed laterally of each other, the end of one rod extendin through a pair of aligned openings 19 in the bracket A and the end of the other rod extending through the adjacent aligned openings IS in said bracket A.

A pair of the scaffold boards 2d extend downwardly from the upper left corner of Fig. 2 to a bracket A on an upright tubing H] which is disposed substantially at right-angles to the middle and right-hand uprights If! at the upper end of Fig. 2 relative to lines drawn from said uprights to that upright at the upper left-hand corner. A tie rod 26 has its lower end straight and extended through the U-shaped end of the upper member I! on the bracket A, and its upper end is provided with an angularly disposed portion 28a which lies at right-angles to the remainder of the tie rod 26 and extends through a pair of aligned apertures in the U-shaped end 18 in the upper left-hand corner of Fig. 2. This latter arrangement is shown best at the left-hand side of Fig. 4.

An offset section to be built around a bay window b is made by extending a scaffold board bracket A out in an opposite direction to a similarly disposed bracket in the manner shown in Fig. 3, and it is thus apparent that it is possible not only to arrange the scaffolding to extend in different directions, but also in offset parallel relationships to other portions of the scaffold.

In the lower left-hand portionof Fig. 2 there is ShOWn an inside corner 28, and in this case, as is illustrated, it is possible to still utilize the same conventional structures to obtain the desired scaffold formation.

The right-hand portion of Fig. 4 shows a pair of tie rods 26 whose adjacent ends are connected by a short piece of tubing 29 which lies at a 45 degree angle to each of said tie rods 26. It is then possible to dispose a scaffold board bracket A at an oblique angle if such an arrangement is desired at a corner. If desired the scaffold bracket may be made longer as indicated by the dotted lines at A to afford better support for the boards when the bracket is placed at such an angle.

In Fig. 7 there is shown a perspective view of a. plate '39 having a pair of" upstanding lugs 3| WhlCh are adapted to receive the lower portion of a short rod 32 therebetween which rod carries projecting pins 33 pivotally connected with lugs iii. The plate 30 is also provided with a plurality of apertures 34 to permit the plate to be nailed to a supporting member such as a sloping roof where it is desired to extend scaffolding up above said roof. By reason of the anchored plate 30 the rod 32 will be firmly retained in position on any slanting surface, and a tube i0 receiving the rod 32 telescopically therein at its lower end may be properly anchored on a slanting surface.

In the first part of the description the sections of upright l9 wer described as being connected by coupling sleeves l I. However, it is, of course, possible to connect these sections by means of connector pins such as shown at 34 in Fig. 1. Either form of upright section connector can be used as desired.

From the foregoing description it will be seen thatI have provided a knock-down scaffolding which can be used time after time, and wherein a few conventional parts can be made to suit conditions wherein various shapes of building construction are encountered. The scaffolding is relatively light yet extremely rigid and safe. Means is provided for connecting the uprights to the building structure and also for interconnecting adjacent uprights to increase the rigidity of the units. The scaffold boards can be placed at any desired level and when the board supporting brackets are placed in position there is no likelihood of the brackets becoming displaced or the boards slipping from the brackets. A simple and effective form of brace connector is provided for securing the ends of the braces to the uprights and the tie rods are provided with end connections to permit said rods to extend from the scaffold board brackets at different angles. When taken apart the several portions of the scaffolds can be compactly arranged for transportation and storage.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the various parts without departing from the scope of my invention.

What is claimed is:

1. In a scaffold structure, an upright, a substantially horizontal bracket member having a first portion at least partially encircling said upright, a second bracket portion extending from said first bracket portion at a point spaced outwardly from said upright and engaging said upright at a point spaced below said first bracket portion and extending at least partially around said upright and contacting portions of said upright in opposed relationship to the encircling portion of said first mentioned bracket portion,

said bracket member being vertically slidable on said upright and means for detachably securing at least one of said bracket portions to said upright to prevent vertical displacement of said bracket member.

2. In a scaffold structure, an upright, a bracket connected to said upright and extending laterally therefrom and provided with a substantially horizontal upper surface, and a brace connector comprising a substantially U-shaped element lying partially about said upright and supported by said bracket against vertical displacement, said brace connector having a pair of arms extending outwardly beyond said upright and having a pair of aligned openings therein to removably receive a brace therein.

3. In a scafiold structure, an upright, a substantially horizontally disposed bracket member having a U-shaped end portion lying partially about said upright, one arm of said U- shaped bracket end portion being extended outwardly from said upright a short distance and the other arm of said U-shaped bracket end portion being extended outwardly from said upright a considerably greater distance, said bracket arms having oppositely disposed apertures therein, the axes of said apertures being disposed outwardly beside said upright, a tie rod having an end extending through said apertures and secured against displacement from said bracket member, means for anchoring the opposite end of said tie rod, a bracket brace connected to said bracket member and extending from an outer portion thereof inwardly to said upright, and the inner end of said bracket brace having a U- shaped portion lying partially about said bracket, the open portion of said U-shaped bracket brace portion being disposed opposite to the U-shaped portion of said bracket member.

4. In a scafiold structure, a plurality of uprights, a scaffold board bracket secured to one of said uprights and having a pair of apertures therethrough adjacent said upright, a first horizontal tie rod extending through one of said apertures and detachably secured to said bracket, said toe rod lying at substantially right-angles to said bracket, a second tie rod extending through the other opening in said bracket and having a major portion of its length disposed at rightangles to said first tie rod, scaffold board brackets on others of said uprights at substantially the same height as said first mentioned scaffold board bracket, one of said scaffold board brackets lying parallel to said first mentioned bracket and being detachably connected with an end of said first tie rod, and another of said scaffold board brackets lying at an angle to said first mentioned bracket and having an end of said second tie rod secured thereto.

5. A scaffold board bracket comprising, a horizontally disposed arm having a reversely bent hook portion at one end of the same, and having opposed tie rod openings therein spaced somewhat from said end of said arm and a fork member connected to said arm below the same, the fork of which opposes the hook shaped portion of said arm.

6. In a scafiolding, an upright, a scaffold board bracket, a brace connector and a brace, said bracket having at one end thereof an upper hook facing in one direction and a lower hook facing in the opposite direction, whereby the bracket can be hooked to the upright at any desired level, means for retaining the bracket in place on the upright at a desired level, said bracket having a recess between said hooks, said brace connector being of general U-shape in plan view and adapted to be received within the recess of said bracket and to embrace the upright, said brace connector having arms with vertical opposed brace receiving openings therein and the brace extending through said openings and adapted to be connected to a building structure.

7. The structure defined in claim 6, said bracket having pairs of opposed tie rod connecting openings in opposed parts of the hooked portion.

THERON S. CASTNER.

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