US1148624A - Dust-guard wall for journal-boxes. - Google Patents

Description

I. A. RANDEL.

DUST GUARD WALL FOR JOURNAL BOXES- APPLICATION FILED JUNE 10. 1914.

1,148,624. Patented Aug. 3,1915.

Fig.1 a

WITNESSES My //vv NTOR j/W aw BY HIS ATTORNEYS mart n res.

IVAR A. RANDEL, oncnroaeo', ILLiNoIs AssIGNoR 'rov Mecoai) AND COMPANY, or CHICAGO, ILLINOIS, A CORPORATION or NEW JERSEY.

DUsT-GUARn wALL FOR JOURNAL-Boxes;

Specification of Iieitters Patent.

Patented Aug. 3, 1915.

Application filed June 10, 1914. Serial No. 844,138.

To all whom it may concern:

Be it known that I, IVAR A. RANDEL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Improved Dust- Guard Walls for Journal-Boxes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to journal boxes and is directed to the improvement of the inside dust guard wall therefor. These inside dust guard walls are employed, for instance, in the journal boxes disclosed in my prior Patents 1,077,159, of date, October 28th, 1913, and 1,090,085, of date, March 10, 19162. In both of my said prior patents the inside dust guard walls were stamped from sheet metal, being formed independently of the pressed metallic cellars, and the tops of the boxes were cast onto the cellars and inside dust guard wall, after the latter had been properly positioned in the cellars. Hitherto, these inside dust guard walls have been stamped from sheet metal and given the approximately final contour in the process of stamping or cutting from the metallic sheet; and this occasioned very considerable waste of sheet metal, due to the larger sizes of waste blanks.

My present invention effects a very great saving in sheet metal and reduces the waste to a minimum, all as will hereinafter fully appear from the following detailed description.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings: Figure 1 is a plan view showing in detail the complete inside dust guard. wall; Fig. 2 is a section taken on the line 00 m on Fig. 1; and Fig. 3 is a plan view showing the blank in the form from which it is stamped from the sheet metal.

Referring first to Fig. 3, the numeral 1 indicates the blank from which the inside dust guard wall is to be formed. This blank, in this instance, is stamped or cut from a two and one-half inch wide sheet metal strip twenty seven inches long, which has a total area of sixty seven and one-half square inches. The blank 1 is formed on one edge with end and intermediate projections 2 and 3, respectively, that are to be bent on the dotted lines 3/ until they project at a right angle to the face, or in other words, to the plane of the flat dimension of the strip. The strip or blank 1 is then bent (see arrows on Fig. 3) in the plane of its flat dimension until it is given the U shape shown in Fig. 1. In thus bending the blank in the plane of its flat dimension, it will be held in a suitable frame or between suitable dies or plates which will prevent buckling or kinking thereof, and cause the displacement of metal incident to the bending thereof, to take place entirely in the plane of the flat dimension of the said strip. Under this operation, the complete dust guard wall will have the metal in its intermediate and relatively wide portion displaced in the plane of its fiat dimension, that is, the metal on the outer curved edge thereof, will be stretched, while the metal on the other curved edge thereof, will be upset, more or less. This completed inside dust guard wall is adapted to be inserted into the cellar of the journal box, and the laterally bent flanges 2 and 3 will then serve to hold the same properly spaced from the outside dust guard wall of the box.

Here it may be stated that the dust guard wall shown is designed for application to a cellar having a rounded bottom, while in my prior patents above noted, the drawings illustrate a cellar, the bottom of which is approximately flat at the point where the inside dust guard wall is applied. Otherwise stated, the inside dust guard wall illustrated in the drawings of the present application is designed for application to a slightly modified form of the cellar illustrated in my said prior patents.

In practice I have found that the improved dust guard Wall above described, made in accordance with my improved process, can be constructed from sheet metal with only approximately one-half the waste which has hitherto been. necessary with the old process wherein the dust guard Wall has intermediate portion displaced in the plane been directly stamped into an approximately of its flat dimension, and provided with end final contour or outline. and intermediate flanges bent at an angle That I claim is: to the plane of said flat dimension. 5 1. A curved dust guard Wall for a jour- In testimony whereof I aifix my signature 1:;

nal box made from sheet metal and having in presence of tWo Witnesses.

its intermediate portion displaced in the IVAR A. RANDEL. plane of its flat dimension. Witnesses:

2. A U-shaped dust guard Wall for a jour- DONALD D. MILLIKIN, wnal box made from sheet metal, having its F. D. MERCHANT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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