US1876386A - Method of uakotg bolt holding devices - Google Patents

Description

Sept. 6, 1932. E c. BAYNES METHOD OF MAKING BOLT HOLDING DEVICES Filed May 27. 1951 w/w W J a flv y U N ,5 WWWWWIWHWHWW INVENTOR 121222 Y 21 Amoco} Jud mg. ATTORNEY Patented Sept. 6, i932 UNITED STATES nnwnnn c. rams, or rmmenm, memo r nn'rn'on or mine norm nonnme nnvrcns Application filed Kay 27,

This invention relates to bolt holding devices and particularly to such devices made -in one piece from ablank of sheet metal. An object of this 13 the character described above includmg a longitudinally, split, internally threaded sheet metal cylinder having integrahthere with plate-like diametrically opposed wings extending from free end portion'sof the 10 cylinder. i f

A further object is a novel process of making a bolt holding device of the character described above which includes the steps of (a) providing a sheet metal blank;

stamping threads upon the central portion of the blank; and forming the latter portion to provide a longitudinally split, internally threaded thimble-like cylinderhaving p1ate-.

like, diametrically opposed wings extending from the free ends of the cylinder.

A still further. object is a device of the character described above. wherein the cylinder is slightly tapered.

A still further object is a device of the class described above wherein the web which connects ends of the cylinder is cut away, at least partially, if desired.

Still furtherobjects will readily .occur to those skilled in the art upon reference to the following description and the accompanying drawing in which Fig. 1 shows a vice maybe made;

Fig. 3 shows a device in th'ep'rocess of I manufacture. V a

Fig- 4 shows a completed device.

Fig. 5 is a section as if on the line 55 of Fig. 1.

' Fig. 6 shows a'modified form, of the device, inuse. w v Referring to the drawing it will beseen that the device includes a sheet 'metal cylinder 10 having one end closed by aweb 12] and so formed as to be longitudinally split along the diametrically opposed lines 14. Integral with the cylinder and extending from the free endsof the latter are diametrically op.-

invention is a device of -at 38, the cylin device of the invention in use. j terlock between :the bolt and the thimble and Fig. 2 shows a blank from which the dethat its closed end is slig 1931. Serial 1V0. 540,489.

posed plate-like wings 16. Further, the cylinder is internally threaded as shown at 18 for cooperation with the threads of a bolt 20.

The device may be nade by a process which includes the steps of (a) providing a sheet metal blank 22 of the form of Fig. 2, the

blank being necked down as illustrated in- Fig. 2 at 24; (b) stamping the threads 18 on the central portion of the blank .and forming the threaded portion; to a trough-like, substantially cylindrical form as illustrated in Fig. 3, the'axis of the thus curvedthreads being coincidental with the axis of the trough and (c) deforming the parts so shaped along the lines X to form a longitudinally split, internally threaded, thimble-like cylinder, having plate-like diametrically opposed wings abv 16 extending from the free ends of the cyl inder on the lines-X- -X.

One use of the device is illustrated in-Fig. 1. In this figure-there is .sl wn asheet metal PP 32-aligned with an aperture 34 in a wooden support 36. The device islsecured to the sheet. metal panel 30 by spot welding the wings 16 to the dpanel 30 on the spots indicated er 10 extendingthru'the aperture' 32'. The supports are then brought to getherandthe bolt 20 is passed thru the apex"- ture in the washer 40, thru aperture 34, and into the thimble 10, its threads then engaging the threads 18 of the thimble tojeifect aninthus to eifect a secureinent-betweenthe supports 30. and 3 6. r V J j V In Fi 6 there is disclosed a device which, while'o the form of the device of Figs. 1 to 5, is slightly different therefrom in that the web 12 is cut away to provide an aperture -42 through which may project the screw bolt.

this figure the deviceis il- 1 44. Further, in

ort or panel 30 having an aperture at lustrated in connection" with two sheet metal panels or supports 46 and 48, to one of which, namely, 46, is welded the device, the. wings of the latter being disposed between the supports as shown. I I V It will be observed that the cylinder 10, of- Fig. 4, is shown as havin a slight'taper so fitly smaller in diameter than its open end. A cylinder thus formed is more efficient in operation than a perfectly straight cylinder, for the reason that the threads of the cylinder engage the threads of the bolt more tightly as the latter is-further threaded into the thimble.

It will also be observed that by virtue of the fact that the cylinder is split on diametrically: opposed'lines, it is possible to make the device in one piece from asheet metal blank and it is possible to stamp the threads therein while the device is in flat blank form, thus eliminating the necessity of cutting threads in the cylinder.. Further the aperture 42 in web 12 (Fig. 6) may be cut away while the device is still in blank form. I

It will further be seen that a device of this character may be made with the use of a number of dies in separate operations or by a compound die in substantially one operation, these operations occurring simultaneously or in rapid succession, as desired.

Further, it will be seen that'the device of this character may be made far more cheaply than similar devices.

Now having described the invention and the preferred embodiment thereof, it is to be understood that the said invention is to be limited, not to'the specific' details herein set forth, but only by the scope of the claim which follows What ll claim is:

That process of making one piece sheet metal bolt holding devices which includes the steps of (a) providing an elongated sheet metalstrip blank, (6) stamping threads on and transversely across the central portion of said strip blank and forming the centrally threaded portion to a trough-like, elongated substantially semi-cylindrical form with the axis of the threads extending longitudinally, coincidental with the axis of the-trough, (0)

v folding the strip across the axis of the threads into a U to bring the ends of the semi-cylindrical threaded portion together and (d) bending the ends of the strip away from the axis of the threads.

\ In testimony tion.

EDWD C. BAYNES.

whereof, I sign this specifi

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