US1121769A - Frame for rheostat resistance elements. - Google Patents

Description

J. T. SKINNER.

FRAME FOR BHEOSTAT RESISTANCE ELEMENTS. APPLIGATION FILED JUNE 16, 1914.

1,121,769. A Patented Dec. 22, 1914.

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Patented Dec. 22, 1914.

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FRAME POR'RHEOSTAT RESISTANCE ELEMENTS. APPLICATION FILED JUNE 16, 1911.

1,121,769. Patented Dec. 22, 1914.

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JOHN r1. smnnn, or LAWRENCE, Kansas.

FRAME FOR RHEOSTAT RESISTANCE ELEMENTS.

Specification of Letters Patent.

Patented Dec. 22, 1914.

Application filed June 18, 1914.. Serial No. 845,473.

To all whom it may concern Be it known that I, JOHN T. SKINxER, a citizen of the United States, residing at Lawrence, in the county of Douglas and State of Kansas, have invented certain new and useful Improvements in- Frames for hheostat Resistance Elements; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompany ng drawings, forming part of this specification,

. and to the figures and letters of reference marked thereon.

The object of the present invention is to provide a frame for rheostat resistance elements used in connection with the electrical equipment of electrically driven cars, which. frame shall have the advantage of being of lighter weight than the frames uowdn use, but of greater strength, com bined with the capacity for assembling the rheosta-t units in any desired relation or position in or under the car, while permitting said units to be rigidly connected together as may be found most convenient or desirable.

The present application embodies features formerly embodied in my prior application Serial No. 817,252, filed February 7, 19M, and the invention herein consists in certain novel details of construction and combinations and arrangements of parts, all as will be hereinafter described and pointed out particularly in the appended claims.

Referring to the accompanyin drawings,-Figure 1 is an elevation of an end frame of a rheostat unit. Fig. 2 is a section in a central vertical plane through the same. Fi is a side elevation of therheostat unit with the end frames in position. Figs. 4 and 5 are elevations illustrating rheostat units assembled in vertical and horizontal relation respectively. Fig. 6 is a perspective view of a skeleton frame for the reception of rheostat units to facilitate the use of such units either in or under the car, and to adapt the same for being more readily inclosed by panels in situations where it may be desirable to change or renew the units.

Like letters of reference in the several figures indicate the same parts.

The end frames A between two of which the resistance elements are mounted to form a unit are all duplicates and each is formed of a cupped piece of tough metal, thus providing a rectangular plate a surroundedby edge flanges a, the outer faces of which flanges are at right angles to the plane of the plate a for a purpose which will presently appear. Both the plate a and flanges a are provided with a series of apertures adapted for the reception of bolts or connecting rods. In the preferred construction the plate is provided with apertures B properly positioned to receive the ends of transverse rods C, whereby the two end frames A may be connected together and the transverse rods C serve as the direct supports for the resistance elements D, Fig. 3'. In addition the plate a is preferably provided with a large central opening B, to reduce the weight of the structure and for the free circulation of air. The flanges a are preferably provided with apertures E for the reception of fastenings or connect ing bolts e when the units are assembled one on top of the other or side-.by-side as indicated in Figs. 4 and 5. The apertures E are correspondingly located in all of the flanges, thus adapting the units to be assembled in either relation specified, and regardless proximity to the adjacent unit. In addition to the openings E, the flanges a are provided. with openings or apertures F adapted for the reception of fastening devices whereby inclosing panels may be secured on the sides of the units so as to form a housing through which air maybe circulated for the purpose of heating the car, or for the purpose of keeping the resistance members cool in the well understood manner. or as described in the application hereinbefore referred to. Openings 7' are also formed in the body or plate a of the end frames for the same purpose as the openings F in the flanges; thus. theconstruction of the side of the unit brought into is such that, regardless of the relation in i which the units are assembled, inclosing panels may be readily attached thereto on any or all sides of the units, and any of the panels may be removed independently of the others.

In some instances it is desirable to mount t e units in a supporting frame and in Fig. 6 a skeleton frame is illustrated which is of such form and construction that it may be readily secured in place in or on the car and is adapted for the reception of resistance units such as hereinbefore described. This skeleton frame is formed by end pieces G with inwardly extending flanges g at top and bottom, said flanges being connected both at top and bottom along the front and rear of the skeleton frame by longitudinal bars H, and to give additional rigidity diagonal bars 1' are extended across the top and bottom of the skeleton frame in opposite directions and securely bolted at their ends to the longitudinal hars H. The bars H intermediate their ends Where attached to the flanges G are ofiset to lie substantially in the plane of the flanges and thereby present their outer faces in the same plane as the outer faces of the flanges, this construction being especially well adapted for-resting flat against a supporting surface or for the attachment of inclosing panels. The end frames G are provided with large openings therethrough as at G, and portions of the metal, the removal of which forms the openings, may be bent inwardly and form flanges or shelves K upon ivhich the end frames A of the resistance units may rest when inclosed in the skeleton framework. The shelves K, flanges g and "ears H are all provided with perforations L and Z which are spaced preferably to correspond to the spacing of the perforations l5 and F in the flanges of the end frames A; thus adapting the skeleton frame for the attachment of such end frames or resistance units in practically any desired relation, and also providing for the attachment of inclosing panels, which will be of proportions calculated for application to either the skeleton frame or to assembledunits,

With the construction. herein defined it becomes practical to make resistance units of uniform size With standardized framing which Will permit of the units heing assembled in practically any relation to each other, and in any position in or on the car, with the assurance that should any of the resistance members burn out or require renewal it- Will only be necessary to disconnect andremove the particular unit which the resistance element is located.

Having thus described my invention, What I claim as new and desire to secure loy Letters Patent is, 1 i p 1. An end frame support for rheostat resistance units, consisting of a flat skeleton section of pressed metal with edge flanges having their faces at right angles to the flat surface of the section, said flat surface and flanges being perforated for the passage of fastening bolts and bars, and the por- With their menace tion having a centrally located ventilating opening therein, I

2. An end frame support for rheostat resistance units, consisting of a fiat skeleton section of pressed metal having edge flanges faces at right angles to the fiat face of the section, said flanges losing provided with perforations therein for connecting the units together, said perforations being uniformly spaced in the flanges, Whereby the units may be assembled with different sides in proximity, and with the perforations in registry for the reception of the fastening means. I

3. An end frame support for .rheostat resistanceunits consisting of a flat skeleton section of pressed metal haying edge flanges with their outer faces at right angles to the surface of the frame said flanges being provided with correspondingly spaced perforations for the reception of fastening means, whereby the units may he secured tog-"etherv and with intermediate corresponding perforations for the reception of fastening means, whereby inclosing ;il11lS may he se cured to the units i. A rheostat resistance unit, embodying oppositely disposed end frames, each consisting of a flat skeleton section of pressed n etal having edge flanges with correspondingly spaced perforations therein, oars extending through the flat portion of and rigi ly connecting said end frames, and resistance elements supported on'said bars.

5. 'lhe combination with resistance units formed by end frames consisting of flat skeleton sections of pressed metal having edge flanges "with perforations in said flanges and connecting rods between. said end frame having the resistance nhers supported thereon, of a skeleton frame for the reception of said resistance'units embodying end frames having inwardly extending flanges, longitudinal edge bars connecting the flanges of the end frames and inwardly extending shelves for the reception of the end frames of the resistance units, said flanges and shelves'cf the skeleton frame being pro- 'vided with perforations spaced to correspond to the s'pacin of the perforations in the resistance unit rams.

'SKlNNER.

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