US838644A - Sheet-metal bolt structure. - Google Patents

Description

N0. 838,644. PATENTED DEC. '18, 1906. J. S. RAPSON SHEET METAL BOLT STRUCTURE.

APPLICATION FILED MAE.29,1906.

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JOHN S. RAPSON, OF ELKINS PARK, PENNSYLVANIA.

SHEET-=METAL BOLT STRUCTURE.

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Specification of Letters Patent Patented Dec. 18, 1906.

Application filed March 29, 1906- Serial No. 308,634.

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Be it known that 1, JOHN S. RAPSON, of Elkins Park, Montgomery county, and State of Pennsylvania, have invented an Improve- 5 ment in Sheet-Metal Bolt Structures, of

which the following is a specification.

My invention has reference to sheet-metal bolt structures; and it consists of certain improvements which are fully set forth in the following specification, and shown in the accompanying drawings, which form a part thereof.

The object of my invention is to provide a construction of bolt structure or casing specifically adapted for window-shutters when made from sheet metal, which while embodying lightness coupled with strength shall also be inexpensive to manufacture.

More particularly, my invention consists in a metal body formed of sheet metal stamped into proper form to provide two side bars and a series of cross-bars, part of which are depressed and part raised to form a longitudinal bolt-channel between and parallel to the side bars, combined with a movable bolt slidably fitting the channel and having a lateral part extending between two adjacent cross-bars to limit the movement of the bolt. A, My improvement further comprises a 0 keeper for the bolt when formed of two side bars and a series of cross-bars, part of which are depressed and part raised to form a channel into which the end of the bolt may enter.

My invention also embodies details of construction which, together with the features above specified, will be better understood by reference to the drawings, in which Figure 1 is a plan view of a shutter-bolt embodying my invention. Fig. 2 is a longitudinal section of the same. Fig. 3 is a cross-section of the same on line 3 3. 4 is a cross-section of the same on line 4 4. Fig. 5 is a plan view of the stamped sheet before being bent into the finished form by the dies, and Fig. 6 is a perspective view of the keeper.

There are two parts of the boltnamely, the body and its bolt proper and the keeper. The general construction of the body and the keeper are the same, and a description of the former will equally describe the latter.

Referring more particularly to the body and bolt portion of the structure, the body consists of two parallel side bars A A, having outer downwardly-extending flanges B B,

and said bars A A are connected by a series body.

of cross-bars C D, the former being raised above the side bars and the latter depressed, so that a rectangular or other suitablyshaped channel J is formed for the reception of the bolt K. On the end of the body next to the keeper the cross-bars O D are close together but at the other end I prefer to omit the cross-bar D between the last two crossbars 0 and in lieu thereof only provide the downward flanges E E, of the same depth as the flanges B, as clearly shown in Fig. 4.. This construction is equivalent to forming the long cross-bar D at this place and then removing the bottom plate to form an open space F. The advantage of this is'that it reduces the weight and leaves a clearancespace below the bolt K where the knob or handle L is riveted to the bolt, thereby facilitating the riveting of the knob in place and also providing a clearance for the projecting riveted end under the bolt. This bolt K slides in the channel J formed by these cross-bars C and D and the flanges E, which latter not only strengthen the side bars, but guide the rear end of the bolt K. After the bolt K has been slipped into the channel J the knob or transverse part L is riveted to it, as shown, and acts as a means for moving the bolt and also for limiting the movement of the bolt, the said knob being restricted in its travel by the two cross-bars C C at the end of the body adjacent to the flanges E E.

By an examination of Figs. 3 and 4 it will be seen that the bottoms of the flanges B E and cross-bars D are all on the same level and adapted to rest evenly upon the wood of the shutter. The side flanges B and center flanges E and sides of the cross-bars D form grooves G G, which greatly strengthen the Moreover, the screw-holes I are placed in the side bars A, and the downward pressure of the screws H is resisted by the grooved shape of these side bars, as will be readily understood by referring to Fig. 3, where a screw is shown in dotted lines. The cross-bar D at the extreme end of the body may also have a screw-hole I. I have shown these screw-holes as countersunk, but this is not necessary. Ordinarystamped holes may be used and round-head screws employed, if so desired.

Referring now to the keeper, (shown fully in Fig. 6,) the side bars A are provided with the side flanges B, and the cross-bars C and D are bent in opposite directions to form the bolt-channel between them, the bars Dbeing depressed to the level of the bottom of the side flanges B toform the grooves G. The crosssection of the keeper will correspond to a cross-section of the body of the bolt portion and is represented by Fig. 3, which also represents a cross-section of the body of the bolt portion with the bolt K omitted. The rear bar D of the keeper is provided with a screwhole I, and similar screwholes are provided in the side bars A in transverse alinement with the other depressed bar D.

WVhile I have shown the screw-holes I located where I deem the most satisfactory po sitions in the body and keeper to prevent dis tortion under the clamping action of the screws,these screw-holes maybe located in any other position found convenient or desirable.

WVhile I prefer the construction shown, I do not restrict myself to the minor details, as these may be modified without departing from the spirit of my invention.

Having now described my invention, wh at I claim as new, and desireto secure by Letters Patent, is

1. A bolt structure formed of stamped sheet metal and each having two parallel flanged side bars connected by a series of cross-bars, part of which are depressed and part raised to form the bolt-channel, combined with a slidable bolt fitted to the channel in the body portion.

2. A bolt structure formed of stamped sheet metal and each having two parallel flanged side bars connected by a series of cross-bars, part of which are depressed and part raised to form the bolt-channel, combined with a slidable bolt fitted to the channel in the body portion, and having a lateral extension projecting in the space between two adjacent cross-bars to limit the movement of the bolt.

3. A bolt structure formed of stamped sheet metal and each having two parallel flanged side bars connected by a series ol crossbars, part of which are depressedand part raised to form the bolt-channel, and in which the bottom of the depressed cross-bars are on a level with the bottom of the side flanges to form grooves under the side bars, combined with a slidable bolt fltted to the channel in the body portion.

4. In a bolt, the body formed of stamped sheet metal consisting of two parallel flanged side bars and. a series of cross-bars connecting them, a portion of the cross-bars being depressed and a portion raised to form a boltchannel, and two guide-flanges E bounding an open space F to the rear of said cross-bars for supporting the side bars and guiding the bolt, combined with a sliding bolt movably supported in said channel and between the guide-flanges E and having a handle at a point above the opening F and between the guide-flanges E.

5. A bolt-body formed of stamped sheet metal and consisting of two flanged side bars connected by a series of alternately depressed and raised cross-bars and rearward inner flanges E E to the side bars to constitute a bolt-channel.

6. In a bolt, the body formed of side bars A having outer flanges B and inner flanges E and connecting cross-bars C D respectively above and below the level of the side bars, in combination with a bolt K guided by the cross-bars and between the side bars and provided with a knob arranged between the inner flanges E and two of the cross-bars to limit the movement of the bolt.

In testimony of which invention I here unto set my hand.

JOHN S. RAPSON.

Witnesses:

R. M. HUNTER, R. M. KELLY.

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