US1535779A

US1535779A - Scaffold bench and anchor

Info

Publication number: US1535779A
Application number: US544058A
Authority: US
Inventors: Frank B Johnston
Original assignee: AMERICAN SAFETY DEVICE Co
Current assignee: AMERICAN SAFETY DEVICE Co
Priority date: 1922-03-15
Filing date: 1922-03-15
Publication date: 1925-04-28
Anticipated expiration: 1942-04-28

Description

Patented Apr. 28, 1925.

UNITED stares Arerr a tic FRANK 12. JOHNSTON, on NEW roan, N. it, AssIeNon T amiss-roan earners: nnvron ooMreNY, a eonroaennon or Nzewvonn. Y

$GAIE'FOLD BENCH AND ANCHOE.

Application filed March 15, 1922. Serial No, 544,058.

i To all whom it may concern:

Be it known that I, FRANK B. JOHNSTON, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in a Scaffold Bench and Anchor, of which the following is a specification.

The present invention relates to improvements in combined seal-Told benches and anchors, and more particularly to an improvement upon my prior Patent No. 1, l37 593, granted December 5, 1922.

Theinvention contemplates the provision of a devicesituated, Within a building in course of erection or under repair and involving the use of a clamp by which to sea cure the inner portion of an outrigger which projects through a window or opening to theexterior of the building where it is avail able for the support of sca-fliol'ds; the device further involving a-bench combined with the clamp tor fixed support upon a part of the'building.

Objects of the invention are to furnish a secure support for the outriggers avoiding the tilting of the same upon the Window sill in either direction; the provision of adjustability over a comparatively wide .rangeto effect an accurate horizontal disposition of the Outriggers even with the window sills or bottoms of the openings through which they extend; toenable the secure anchoring of the device parts of the building, for insta nee the floor joists; and to provide a compact structure, simple and inexpensive ad mitt-lug otitsquick and convenient attach nu'ut both to the building and. to the out rie'tre a lV it h the foregoing and other objects in view, the invention will be more tully (l.e- SGI'lbOCl hereinafter, and will be more par tieularly pointed out in the claims appended hereto. r i In the drawings, whereinlike symbols refor to likeor corresponding parts throughout the several views,

Figure 1 showsa joist or beam in section with one form of bench and anchor applied thereto, and constructed according to the present invention, and i l Figure 2 shows both a joist and part of the floor in section with a modified form of the invention applied thereto. j

The invention provides for the holding and anchoring of the inner portion of an outrigger to avoid the rocking of the same upon the window sill of a building, or the like, and to otherwise firmly hold the outrigger in place to the end that a safe place may be provided for workmen upon a scaffold which is supported by the outrigger.

In accordance with theinvention, and referring first to 'Figure l, a rectangular frame or yoke 87 is shown as adapted to receive the outrigger beams, the beams being separated by the screw standard 88 upon which the

nuts

89 and 90, which hold the frame 87 in place and permit of its vertical adjustment, are threaded. The threaded standard 88 in this instance constitutes in part its ownholding frame, the standard being continued downwardly and bent to provide alower clamp member 91 shaped to engage beneath the floor joist 3 and made to engage the bottom and opposite sides of the joist and to cooperate with an, upper clamp member 92 fitting upon the top side of the joist 3 and having a flange extending downwardly along the side thereof opposite that embraced by the lower portion of the standard 88. This upper clamp member 92 carries a sleeve 93 slidable upon the standard 88 and having a set screw 94: taking into tliie standard :tor the purpose (IE securing the clampmember 92 in an adjusted position, for instance a 'ainst the joist 3, as shownin Fig. 1. The lower portion of the standard in this instance constitutes the holding frame while the

clamp members

91 and 92 take the place of the anchoring means for securing the device to a part ot the building. In this instance the frame 87 may be moved up and down upon the screw standard 88 by appropriately turning the

nuts

89 and 90 and an accurate vertical ad- Cal justinent may be had to secure the correct horizontal alignment of the outrigger.

In Fig. 2, a somewhat similar rectangular closed frame 05 is provided having a pair of

lateral set screws

96 and 97 and atop set screw 08 threaded through positions in the sides and upper bar of the frame respec tively and projecting into the space within the frame, such set screws being suitably pointed and adapted to take into the outrigger beams. The bottom bar of the frame is adapted to receive the upper end of the threaded standard 99,

lock nuts

100 and 101 being screwed upon the standard 09 at opposite sides of said lower frame bar whereby the frame 95 is adjustably held in acorrect vertical position on the shaft. As in Fig. 1, the standard 99 extends downwardly and carries a clamp member 102 at its lower end adapted to embrace the lower portion of the floor joist 3. In this case, floor boards 103 are shown as laid upon the joist 3, asuitable opening 104 being made for the passage of the screw standard 99, and a base plate 105 being placed upon the floor boards 103 just above the joist and opening 10 the plate being suitably apertured to slidingly receive the lower unthreaded portion of the standard 99. A flange 106 is made concentrical with the standard 00 and spaced therefrom upon the upper surface of the base plate 105 for the purpose of receiving freely the lower end of a sleeve or barrel 107 which is spaced from the standard and has its upper end engaged by a nut 108 threaded upon the standard 09 and having a handle 100 to facilitate its rotation thereon. The nut 10% rests with its lower face directly upon the upper end of the barrel 107 and centers the barrel by the use o f a depending inner flange 110 extending from the lower face of the nut 108 and being of a diameter to lit snugly and rotatably within the upper portion of the barrel.

The standard 09 is inserted dmvnwardly through the opening 10a whereupon it is turned so that the clamp 102 is engaged beneath the joist 103. The device is then lifted. The clamp member 102 is firmly moved in place by turning the nut 108 which is stationary by reason of its support upon the barrel 107 and it therefore causes the upward traverse of the standard 99 until the final position of the clamp member 102 is reached, whereupon the parts are tightly bound in place. The outrigger beams are received through the frame 05 and are engaged by the set screws therein and also if desirable they find a point of support upon the upper end of the screw standard 9-9. The beams however are properly held at a suitable elevation from the lower bar of the frame in order to permit'of a relatively wide range of vertical adjustment without interference by reason of the outrigger beams stril-zing the screw standard 00. 3 loosening and subsequently ti itcning the

lock nuts

100 and 101 the lifting or the lowering of the frame upon the screw stand ard is accomplished.

The connection of the outri; g directly to the floor joist, which is a peinianent part of the building structure, will insure a lirm support, and the construction of the combined bench and anchor will enable the attachment of the device quickly and conveniently to the floor structure, and the accurate and quick adjustment of the bench or clamp to theoutrigger.

The device is intended to replace the use of barrels which were placed directly upon the floor to support the outrigger, and the use of ropes attached between the outrigger and one of the floor joists to prevent the rocking of the inner portion of the outrigger upwardly from the barrel. Heretofore blocks of wood were placed upon upper ends of the barrels in order to secure a proper alignment of the outrigger with the window sill, but in all such cases it has always been diflicult to secure a proper alignment and inclination would always occur in the platform or scaffold which makes it exceedingly dangerous to work upoin The blocks cannot be found of a suitable size or thickness to meet all requirements. and to give even a roughly acorn-ate alignment has required that these blocks be placed not only upon the barrels but also upon the window sills. \Yith the old method, there is nothing to prevent the ul'ri l'roln swinging sidewise or toppling oll'lhv bm'rels, and especially is [his so when a innuber of blocks have to be built up beneath the outrigger-s.

The present device avoids all of these ohjections, provides for the accurate alignment in a very short time of the outrigger-s and it will be appreciated that the device as proposed may be constructed and sold at small cost.

t is obvious that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invent-ion without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the fol lowing claims.

lVhat is claimed is:

1. An outrigger support comprising a screw standard having a clamp ineml'ier at its base adapted to embrace the lower portion of a floor joist, a second clan'ip member adapted to be placed above the joist, a sleeve on the second clamp member about the standard, securing means carried by the sleeve and engaging the standard for supporting the letter in the sleeve, and an outrigger frame on the standard.

21x11 ontrlggel' support eomprlslng a 5 standard having a clamp member at its lower portion, a second clamp member slidahly reeelvlng the standard, a Sleeve on the second clamp member, means carried by the my invention, I have signed my name hereunder.

FRANK BL JOHNSTON.