Патент USA US2408720код для вставки
Oct. 8,1946. v. M. ABERNETHY ' ‘ SUPPORT Filed Oct. 1, 1945 .. . ‘(8:11 k ‘w. // . 2,408,719 ‘ - ‘ 2,408,7l9 Patented Oct.l8, 1946 V I STATES 1; SUPPORT Vardy M..Abernethy, Forest City , C. ' r 1 Application October 1, 1945,;seria1 No. 619,545 1 Claim. (01. 36pm) I . CE if J £2,408,719 , 1" ff . Y 1,7,0 1' , , 2 _- porting scaffolding and the like. The supports This invention relates to a support, and more especially to a support adapted to suspend scaf can also ‘be , suspended from I-beams. folds and the like from- the rafters or other beams > - :Some ‘of the objects of the invention having been'stated, other objects will appear as the de in a building; said support having means which, scription proceeds when taken in connection with the accompanying drawing in which: by the weight applied to the ‘support, serves to embed a pair of prongs into the rafter and where by the greater the downward pull applied to the ' support, the greater the gripping action it will exert upon the rafter or; beam from which it is suspended. A _ I > ‘ _ Heretofore, in painting ‘and otherwise ‘repair , Figure l-is' a front elevation of one of the sup ports showing it ready to be attached to a rafter orbeam'in a_»building;~ :10 ' > Figure 2 is a sideelevation of the support shown int-Figure 1, omitting .the beam, and looking at ing the interior of‘buildings, it has been quite a, problem tosuspenda scaffold in close prox theleft handside of Figure 1; imity to the underneathside of the roof for ap upper-portion of Figure l and showingxthe prongs ' r. Figure-3, is an enlarged detailed view of the playing a coat of paint to the rafters and the 15 of the Support embedded in the rafter or beam; 1 Figure 4 ‘is a side elevation of the twonearest sheeting supported by the rafters. It has been the custom to bore holes in thehroof and sus pend rods, .pipes and thelike from the top sur face of the roof for supporting a painting scaf ' supportsiofiour supports secured to the rafters ofythe roof- of a building and showing the scaf vfold supported thereby. fold below the interior surface of the roof. Then, 20 Referring more speci?cally to the drawing, the numeral It] indicates an elongated pipe, rod and after the painting job is completed, it has been the like which has a conventional coupling ll necessary to repair the roof, thus resulting in threadably or otherwise secured on the lower end leaks occurring at these repair points. thereof. A sleeve I2 is rotatably and slida'bly . It is an object of this invention ,to provide a mounted on the pipe l0 and has an outwardly support and whereby a plurality of these supports and upwardly projecting prong l3 secured there can be provided for engaging a plurality of the to by‘ welding or otherwise, said prong» being rafters or roof-supporting beams of the building adapted to support a suitable scantling such as - l4 indicated in Figure 4. There are usually four of the scaffold will cause the prongs on the upper 30' of these supports secured in a quadrangle and a end of these supports to embed themselves in _ pair of scantlings l4 extending between the two for supporting a. scaffold near the lower end or ends of the supports and whereby the weight the sides of the rafters and weight applied to proximate supports with a floor [5 being adapted the scaffold will cause these prongs to sinkvmore deeply into the rafter, thus insuring a hold upon the rafters which will not, under any circum stances, come loose until all weight is removed from the support and, when all weight is removed to be laid thereon to serve as a scaffold. ‘ The upper portion of the pipes I0 has slidably mounted thereon a sleeve 66 which is limited in its downward movement by a pin l1 suitably secured in the pipe Ill and projecting outwardly therefrom. This sleeve I6 has a pair of, outward ly and oppositely projecting prongs l8 and I9 from the supports, they are easily removed from the rafters to which they have been a?ixed. It is another object of this invention to provide 40 to‘the outer end of which are pivoted as at 20 and 2| the lower ends of dogs 22 and 23 which a support adapted to engage opposed sides of are pivoted as at 24 and 25 to‘the outer ends of roof-supporting beams, such as rafters and the links 26 and'ZT. These links have a plurality of like, and whereby the support has a pair of piv holes 28 and 29, respectively, therein, in any one oted prongs on its upper end so that where the rafter is out of reach, the support can be in 45 of which, the pivot bolts 24 and 25 may be mount ed. These bolts 24 and 25 penetrate one of the serted against one side of the rafter, that is one ‘holes 28 or 29 in the links 26 and 21 and also prong can be placed against one side of the rafter penetrate a suitable hole through the interme and a slight downward and lateral pull will cause - diate portion of the dogs 22 and 23. the other- prong to'engage the opposed side of the The proximate ends of links 26, and Z‘Iare piv rafter and a'further application of weight or 50 oted as at 34 to the upper end of pipe'lll. The downward pull to the support will cause the upper ends of the dogs 22 and 23 have pointed points of the prongs to embed themselves in the portions 30 and 3| which are adapted to be em sides of the rafter ton?rmly secure the supports bedded in a beam such as rafters 32 which are thereto, each of said supports having a hook on. its lower end for receiving a'scantling for sup 55 adapted to support sheeting 33 of the roof ofv a 2,408,719 3 4 building. These prongs 30 and 3| may likewise hoist, or overhead machinery, or for a variety of be secured to horizontal beams in a building even uses. though there is no obstruction supported by the In the drawing and speci?cation there has upper edge of the beams; but they are especially been set forth a preferred embodiment of the in adaptable for securing to the rafters of a build C31 vention, and although speci?c terms are em ing without disturbing the roof supported by the ployed, they are used in a generic and descriptive rafters. sense only, and not for purposes of limitation, the If it is desired to attach fourof these supports scope of the invention being de?ned in the claim. to the rafters of a building, that is, two supports I claim: ' in spaced vrelation attached to each rafter, it is 10 A support adapted to be secured to opposed only necessary that the operator seize the lower sides of a rafter or other beam in a building com end of the pipe in and project the support up to _ prising an elongated shank, means on the lower where, say, one of the prongs 30 or 3|, engages end of the shank for supporting an object, a one side of the rafter. I sleeve slidably mounted near the upper end of By a downward and lateral pull exerted on the the shank, a'pair of dogs having their lower ends pipe IS, the pipe I i] will slide downwardly in sleeve pivotally secured to opposed sides of the sleeve, Hi and this will pull the inner ends of the links ' La pair‘ of ‘links'pivotally secured to the upper 25 and 21 downwardly which will cause the points end- of‘ the shank at one end and having their 38 and SI to both engage and become embedded other ends pivotally secured to an intermediate in the opposed surfaces of the rafters 32. When 20 portion of said dogs, the upper ends of the dogs sufficient weight has been applied to the sup-v being turned inwardly and pointed towards each ports to cause them to be ?rmly embedded in the sides of the rafter, then the sleeve l2 can be rotated to the proper position to receive the other and terminating in a sharp point and being adapted to engage and embed themselves in op posed sides of the beam when ‘applied to a beam scantlings 0r beams i4 and a suitable floor [5 can 25 and downward pressure is applied to the shank, be supported by the beams or scantlings l4. a stop on the shank to vlimit downward move These pipes it can be any desired length, that ment of the sleeve, said sleeve normally resting by is of a length to support a man so he can reach gravity on said stop to cause the pointed ends of the roof structure comprising rafters 32 and 33, said dogs to be widely separated, lateral pressure or, if desired, to use and support another object a 30 on the shank serving to embed the pointed upper much greater distance below the roof 33, then end of (one of the dogs in one side of the rafter or thesepipes Hi can be of any desired length to pro beam so that a slight downward pull on the shank vide a scaffold or support at any desired distance will move the pointed end of the other dog against below the roof structure. For example, one or the other side of the rafter or beam, and ‘fur more of these supports could be attached to the 35 ther downward pressure on ‘the shank will embed rafters or other cross beams in a building and a I the pointed ends of both dogs further in the suitable hoist could be attached to the lower rafter or beam. ends thereof and it could serve as a support for a VARDY M. ABERNETHY.