Патент USA US2133425код для вставки
' Oct. 18, 1938. H‘ CARLSQNV ‘ , 2,133,425 ' FASTENING DEVICE Filed June 15, 1937 ?air/7197f far/s“ w? ATTORNEYS ‘2,133,425 Patented Oct. 18, 1938 UNITED STATES PATENT‘ ‘OFFICE 2,133,425 FASTENING DEVICE Henning Carlson, Brockton, Mass. Application June 15, 1937, Serial No. 148,405 1 Claim. This invention relates to fastening devices, and its general object is to provide a fastening device that is primarily designed for suspended scaffolds, such as used by painters, and which can be se 5 cured to a roof board or the like, for detachably‘ connecting scaffold supporting cables, blocks and tackles, etc., with respect to the board, and in an easy and expeditious manner, without fear of ac 10 to form a shoulder for disposal against a cleat and the right angle portion has an opening in the form of a slot 4 adjacent to its free end. An important feature of my device lies in the hook member which includes a tapered body 5 which is substantially ?at and terminates at one end into a single hook portion 6, while formed on the opposite end thereof is a pair of spaced parallel hook portions 1. The hook portions 6 cidental separation or displacement. An important object is to provide a safety fas tening device, that includes a hook member for upwardly from the body and are directed toward connection with a roof board and is adapted to each other. detachably and adjustably receive a chain for connection with a block and tackle or the like, of 15 scaffolds, the hook member being of special con struction and having spring means cooperating with the hook portions thereof to prevent any possibility of disconnection of the chain there from or the hook member with respect to the 20 board yet the chain can be adjusted with respect to the hook member without removing the chain therefrom. ' A further object is to provide a safety fasten ing device of the character set forth, that will not 25 damage gutters or the like, or have any direct connection therewith, and the device is simple in construction, inexpensive to manufacture and ex tremely e?icient in operation, use and service. This invention also consists in certain other 30 features of construction and in the combination and arrangement of the several parts, to be here inafter fully described, illustrated in the accom panying drawing and speci?cally pointed out in the appended claim. 35 (Cl. 304—19) In describing the invention in detail, reference will be had to the accompanying drawing where in like characters denote like or corresponding parts throughout the several views, and in which: Figure 1 is a perspective view illustrating my 40 device in use and showing the same attached to a roof board. Figure 2 is a side elevation of the hook mem ber of the device. Figure 3 is a top plan view thereof. Figure 4 is a top plan View of the bracket. 45 Figure 5 is a side elevation thereof. Referring to the drawing in detail, it will be noted that I have illustrated my device as being attached to a roof board I that includes cleats, 50 and for that purpose, I provide a bracket 2 which is formed from a single strip of metal having open ings therein to receive suitable securing means such as screws, for ?xing the bracket to the board and preferably between two of the cleats as shown. 55 The strip is bent to provide a right angle portion 3 and ‘I are shown as being curved outwardly and - Secured to the body, preferably midway its ends by rivets or the like 8, is the flat intermediate por tion 9 of a leaf spring which includes an arm I0 15 having its free end normally engaged with the inner side of the hook portion 6, and a relatively wide arm II normally engaged with the inner sides of the hook portions 1, as clearly shown 20 in Figure 2. The hook portion 6 is mounted through the slot llof the bracket 2 for detachably securing the hook member to the bracket, and extending be tween the hook portions 1 is a chain l2, having links of a width to bridge the hook portions 1 as ‘ 25 shown in Figure l, consequently it will be seen that the chain is not only detachably secured to the hook member, but can be adjusted with respect thereto merely by rotating and sliding the chain for disposing any one of the links in bridging association with the hook portions 1. The chain preferably has a ring l3 secured to- the outer end thereof for the purpose of receiving a block and tackle, cables or the like of scaffolding, and I preferably provide a sleeve I4 formed from leather or other suitable material to prevent the chain from damaging the edges of roofs, gutters and the like. It will be obvious that the sleeve may be a section of a rubber hose which will prove very efficient for the purpose intended. 40 It will be further obvious that my fastening devices are used in pairs, one for receiving the cables or block and tackle of the suspending means at each end of the scaffold, and of course two roof boards or other similar means anchored 45 to the roof, will be used. It is thought from the foregoing description that the advantages and novel features of the inven tion will be readily apparent. It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall ‘within the scope of the appended claim. What I claim is: 55 2 2,133,425 A fastening device for suspending scaifolds and same for detachably connecting the chain there~ the like from a roof, and comprising an attaching bracket having an angled portion provided with a slot therein, a hook member including a single hook portion for passage through the slot for con nection with the bracket, a pair of parallel hook portions included in the hook member, a chain to, spring retaining means secured to the hook member and engaged with the free ends of the slidably mounted between the pair of hook por tions and having links of a width to bridge the hook portions thereof to prevent casual removal of the chain from the parallel hook portions and 5 the hook member from the bracket, a protective covering for the chain and means on the chain for connecting scaffold suspending means thereto. HENNING CARLSON.