US2526910A - Bolt placing tool - Google Patents

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Oct. 24, 1950 D. SMITH BOLT PLACING TOOL Filed Nov. 5, 1947 I l 1 i I I I I I L 5 Egan o o I M \I .9 i \IX 10 I I I l I I I I I 1.? p SEQ. o

INVENTOR. DELBEIZT L. SMITH Patented Oct. 24, 1950 UNITED STATES PATENT OFFICEv 7 2,526,910 BOLT PLACING TOOL Delbert L. Smith, Pittsburgh, Pa. Application November 5, 1947, Serial No. 784,281

This invention relates to a tool that is particularly useful in the placing of bolts for the connection of roofing or siding sheets to the framework of buildings, and has for its object the provision of a tool and a method whereby a workman can place bolts through framework and the members to be connected thereto, without the necessity of reaching around a roofing sheet or a siding sheet to place the bolts or apply nuts thereto, thereby reducing danger of the Workman falling from the roof or from a scaffold. Also it is not necessary that workmen be employed both interiorly and exteriorly of the building, in placin the bolts.

In the accompanying drawing, Figure 1 is a fragmentary view of a roof showing the manner in which the roofing sheets can be connected thereto; Fig. 2 is a perspective view of the tool and of a bolt to which the tool will be connected for insertion in the roof structure; Fig. 3 is an enlarged view taken on the line III-I11 of Fig. 1; Fig. 4 is a view taken on the line IV--IV of Fig. 3; Fig. 5 shows a modification of the tool and bolt arrangement of Fig. 2, and Fig. 6 is a perspective view of the bolt of Fig. 5.

The tool is shown as being employed in the operation of fastening roofing sheets 6 and I to roof purlins or framework 8 which have previously had bolt holes punched therethrough. The workman on the roof will insert the threaded end of the tool 9 through the aligned or matched holes in the relatively-overlapping sheets 6 and 1 and the adjacent purlin 8, the workman being present at the vicinity of the holes through which the stem of the tool 9 is inserted. By reason of its curvature as shown more clearly in Fig. 2, the threaded end of the tool can be projected past the edge of the sheet I as shown in Fig. 1, whereupon a bolt l0 which has a tapped hole in its shank and which also has its shank threaded on its exterior surface, will be screwed on to the threaded end of the tool 9. Thereupon, the tool will be drawn to a position at which the bolt l0 projects through the holes and its head ll abuts against the adjacent undersurface of the purlin 8.

The rod 9 may suitably be of spring steel wire, or be of softer metal to permit it to be bent to other contours. Usually it will not be bent through an are greater than 180, since this will enable it to be slid through the holes, in a curved path to a point at which the workman can conveniently reach the threaded end and apply the bolt l0 thereto.

As shown in Fig. 1, a nut 12 and washers I3 and I 4 are loosely carried by the tool while it is being inserted and will fall into place on the 1 Claim. (Cl. 85-1) shank of the bolt when the bolt is drawn to the position shown in Fig. 3, at which time the nut will be turned down to tightly hold the bolt. Thereupon, the rod 9 will be removed and the protruding portion of the bolt shank I0 sheared oil by bolt cutters.

The nut l2 and the washers 13-14 need not be placed on the rod 9 but can be applied after the bolt shank has been drawn into the holes and the rod 9 disconnected therefrom. In that case, pliers will be employed to hold the bolt in place while applyin the nut and washers.

'In Figs. 5 and 6, I show another manner in which the rod 9 may be temporarily connected to a bolt rod to draw the bolt into fastening position within the holes of the members 6-'|8. In this case, the shank of the bolt has a reduced extension at 16 which is threaded for temporary engagement with a socket member I! that is carried by the rod 9. In this instance, the socket for receiving the extension I6 is in the form of a sleeve that has threaded connection with the rod 9. The member I! could, of course, be welded to the rod 9, to effect a more permanent joiner thereto. When the rod is withdrawn to bring the shank of the bolt into the holes, the socket l1 and the rod 9 will be detached therefrom and a nut applied to the bolt. I claim as my invention:

A fastening device comprising a bolt having a threaded shank provided with an externally- -threaded portion of smaller diameter than the shank, a curved rod ins'ertible through a hole, and a sleeve having threaded connection with the inner end of the rod and with the thread on the reduced portion of the shank, the socket J- being'of approximately the same external diamieter as the bolt shank, whereby withdrawal movement of the rod will draw the bolt shank into the hole.

DELBERT L. SMITH.

REFERENCES CITED Great Britain Feb. 16, 1938

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