US2360999A

US2360999A - Portable scaffold structure

Info

Publication number: US2360999A
Application number: US482294A
Authority: US
Inventors: Peter A Wyen
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-04-08
Filing date: 1943-04-08
Publication date: 1944-10-24
Anticipated expiration: 1961-10-24

Description

oct. 24, 1944. P. A. WYEN 2,360,999

PORTABLE SCAFFOLD STRUCTURE Filed April 8, 1945 2 Sheets-Sheet l F1E l 2 Sheets-Sheet 2 v P. A. WYEN Filed April 8, 1945 PORTABL SCAFFOLD STRUCTURE P 1 E; E.-

Idescribe one of said units in detail.

Patented Oct. 24, 1944 UNITED STATES PATENT yOFF-ICE PORTABLE soAFroLD STRUCTURE Peter A. Wyen, Minster, Ohio Application April s, 1949, serial No. 492,294' 7 claims. (o1. 994-9) The invention relates generally to scaifolds and primarily seeks to provide a novel form of scalold which can be moved about from place to place with great facility, and which can be readily'adjusted'as to length and height and collapsed for convenient storage or shipment.

' An object of the invention is to provide a scaflfold structure of the character stated including a demountable, roller supported cradle equip- 4ment 'which facilitates movement about of the sca'iold structure, and Vsuitable jack equipments by which the weight of the scaffolding can be eased off said rollers so as to x the'scaiolding in a selected position for use.

Another lobject of the invention is to provide in a scaffold structure of Ithe character stated,

novel collapsible base structure.

Another object of the invention is to provide l a scaffolding structure of the character stated the detailed description, the appended claims and the several views illustrated in the accompany- 'ing drawings.

In the drawings: 'Figure 1 is a sidev elevation illustrating the in Vention. Figure 2 is an end elevation. Figure 3 is a detail horizontal sectional View taken on lthe line 3'-3 on Figure 1. "Figure 4is a detail horizontal sectional view `taken on the line 4-4 on Figure 2.

` The improved scaffolding structure comprising the invention includes two identical end units which are connected by adjustable distance pieces 'and adjustable braces in the formation of complete scaolding structure, and it will suflice to Each end unit comprises'a main upper yin- 've'rted' U-shaped trestle piece 5 and a lower -U-shaped trestle piece 6, the two pieces 5 and 6 'being 'connected by suitable uprights 1.

the legs 9 they can be folded flat-wise against the lower trestle piece 6 for convenience in storing or shipping the structure. When the scaffolding is in use the sets of legs 9 are normally held in the operative, `spread relationillustrated in Figure 1 by collapsible brace links II which are centrally pivoted together as at I2 and individually pivoted at their outer ends to the respective legs as at I3.

When locked in their operative, spread condition illustrated in Figure 1, the legs of each set are mounted. in a cradle Ill, the upstanding end bars of which are clamped to the lower ends of the spread legs byclamp screws. Each cradle I4 issupported on rollers I'I to facilitate moving of the scaffolding about vfrom place to place, vand each cradle is provided with one or more jack screws I8 which may be manipulated to engage the ground and ease ,off the weight supported on the cradle so as to secure the scaffolding against free movement when it is placedl in the desired position of use.

A standard I9 projects upwardly from each end of each trestle equipment 5, 6 and serves as a mounting or support for an upwardly pro.-l

jecting, aligned standard 29 havingasocket sleeve 2| secured toits lower end for removably telescoping over the upper extremity of the respective standard I9 in the manner clearly illustrated in Figures 1 and 2.r Each extension standard 20, 2I is secured in position on the respective mounting standard I9 by a clamp screw 22. l

Additional upward extension or standard pieces 23 may be provided, one thereof being adapted to align with and extend upwardly from. each standard piece 20, the additional standard pieces also being provided with socket sleeve extensions 24 for receiving the upper ends of the standard pieces 2| and being secured thereon by clamp ,screws 25.

The socket sleeves 2|. of each unit may also be provided with socket sleeve extensions 26 for removably receiving the downwardly bent ends 2l of a truss cross arm or platform support 28 in the manner clearly illustrated in Figure 2 of the drawings. y

The standard pieces 23 of eacli unit also may be carried by a truss cross arm or platform support 29 in the manner clearly illustrated in Figure 2.

It will be observed by referenceto Figure 1 of the drawings that one or more of the upper standard pieces 23 maybe employed to support one or more swingably mounted support arms 30,

at I0. By reason of the pivotal connection of each said support arm equipment including a ends of the brace pieces are attached to bosses,-

42 provided on the standard pieces 20. e

In the use of the scaffolding equipment the supporting legs 9 of the respective units are spread in the manner clearly illustrated in Fig'- ure 1 and secured on the cradles I9.A The proper number of uprights or

standards

20, 23 are assembled in the manner illustrated in Figures 1 and 2, and if one or more of the swingable lift supporting arms 30 is to be used, suitable mounting thereof is effected on` theA selected upper standard or standards 23. l The'units may be conveniently moved about on their roller .sup-

`ports to bring said units into proper parallel spaced relation and then the transverse distance pieces 34, 3'! and the lbracevpieces 40 are suitably mounted in the manner clearly illustrated in Figure 1. Thedesiredplatform equipment can then be placed on the supports 2B and 29 and the completely assembled scaffolding structure can be conveniently moved into the position lin which it is to be used. After the equipment is thus placed the jack screws IB can be manipulated to ease the rollers 21 01T the floor to a suflicient degree to transfer the load onto the jack screws sothat the scaifolding equipment will be securely held in place against free rolling movement. v

It is of course to be understood thatl the details of structure and the arrangement ofparts 4may be variously changed and modified without departing from the spirit' and scope of the invention. Y

I claim:

ers to the oor to secure the unit against free rolling movement.

5. In a oor supported scaiiolding structure, two parallel spaced rigid base units, each said unit comprising a transverse base unit, a standard upstanding from each end of the base unit, platform supporting means connected across between said standards, a spreadable leg set for 'supporting each end of each base unit, means pivotally connecting the legs of each set to the respective base unit so that they can be spread apart into operative supporting relation or co1- lapsed into close parallel inactive relation, and link means for holding the legsv of each set in operative spread relation and foldable to permit collapsing of the legs, adjustable distance pieces extending across between standards of thespaced units and connecting the spaced units,

1. A scaffoldv structure i unit comprising a supporting means connected across between said standards, a spreadablev leg set for supporting each end of .the base. unit, means `pivotally connecting the legs of each set to thebase unit so that they can be spread apart into operative supporting relation or collapsed into close parallel inactive relation, and link means for holding the legs in operative spread relation and foldable to permit collapsing of the legs.

2. A scaffold structure unit as dened in claim 1 in which each said standard includes a plurality of telescopically mounted -unit sections.

3. A scaffold structure unit as defined in claim 1 in whichI each'set of v supporting legs when spread are v'secured 'in a roller supported cradle for facilitating movement about of thescaffold structure. u l

4. A scaiold'structure unit as defined in claim Al .in which each set of supporting legs when' ing movement.

and adjustable brace means connecd to the distance pieces and the standards for supporting said distance pieces intermediately of the ends thereof.

6. In a floor supported scaffolding structure, two parallel spaced base units, each said unit comprising a transverse base unit, a standard upstanding from each end of the base unit, platform supporting means connected across between said standards, a spreadable leg set for supporting each end of the base unit, means pivotally connecting the legs of each set to the base unit ends thereof, the sets of supporting legs of each unit each being secured in a roller supported cradle for facilitating movement about of the scaffolding structure.

7.`In a floor supported scaffolding structure, two parallel spaced base units, each said unit comprising a transverse base unit, a standard upstanding from each end of the base unit, platform supporting means connected across between said standards, a spreadable .leg set for support ing each' end of the base unit, means pivotally connecting the legs of each set to the base unit so that they can be spread apart into operative supporting relation or collapsed into close para1 lel inactive relation, and link means for holding the legs in operative spread relation and fold-` able to permit collapsing of the legs, adjustable vdistance pieces extending across Vbetween stand- PETER A. WYEN,