US1339988A

US1339988A - Insulating collector or distributer spool

Info

Publication number: US1339988A
Application number: US156011A
Authority: US
Inventors: Steinberger Louis
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-03-20
Filing date: 1917-03-20
Publication date: 1920-05-11
Anticipated expiration: 1937-05-11

Description

L. STEINBERGER. INSULATING COLLECTOR 0R DISTRIBUTER SPOOL. APPLICATION FILED MAR. 20, 1917.;

1,339,9 8, Patented May 11,1920. j;

14 TORNE LOUIS STEINBERGER, OF BROOKLYN, NEW YORK.

INSULATING COLLECTOR 0R DISTRIBUTER SPOOL.

Specification of Letters Patent. P t ted May 11, 1920.

Application filed March 20, 1917. Serial No. 156,011.

To all whom it may concern:

Be it known that I, LOUIS S'rnmennenn, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Insulating Collector or Distributor Spools, of which the following is a specification.

My invention may be particularly described as a high tension collector or distributer spool and it relates generally to improvements in insulating devices of the spool type which are to be used in combina tion with co-acting brushes in automobile installation.

One of the objects of my invention is to provide an insulator of the type disclosed so constructed as to cause the wearing surface of the insulator to be free from dirt and dust and foreign material, the presence of which would have a deleterious effect.

Another object is to provide an extended surface of insulating material to effectually lessen the danger of short circuiting.

Other objects will appear from the following description and claims.

Referring to the drawings:

Figure 1 is a Vertical section of one form of my device.

Fig. 2 is a sectional view on the line 22 of Fig. l.

Fig. 3 is a vertical section through another form of my device.

Figv 4: is a vertical section through still another form of my device.

In the drawings like reference characters refer to like parts.

10 is the body or bobbin portion and 11 and 12 are the flanges extending circumferentially and radiallyfrom each side of the body portion. In the form shown in Fig. 1 both surfaces of each'flange are provided with a series of concentric steps 13 so arranged that the thickest portion of a flange is at its base, the thickness progressively decreasing step by step to its periphery; In the form shown in Fig. 3 the inner surface only of each flange is provided with a series of concentric steps 13 as shown.

The annular steps formed on the sides of the flanges are cylindrical and are provided with vertical sides thus forming at any point right angles respectively between the sides and the tops of the steps.

Embedded in the outer surface of the may consist of a complete ring 15 extending entirely a round the body portion of the spool as shown in Figs. 3 and 4. In that form of device where a sector of metal is inserted in the surface of the body portion of the spool as shown in Figs. 1 and 2, the insulating material is so molded as to form with the metal surface a continuous path around the body portion of the spool. The radial distances of the surface of the metal insert 14: and the surface of the raised portion 16 of the insulating material which projects from the body portion are equal to each other. Between each flange and the metal insert and the continuing insulating portion above referred to, are formed circumferential grooves or

gutters

17 and 18 for the purpose of receiving dust, dirt and accumulated matter during the operation of the insulator and permitting the same to be readily thrown off by centrifugal force when the spool is operating. A central hole or opening 19 is provided in all the forms shown in which may be inserted the means for mounting the spool.

The stepped formation is begun at points on both sides of the metallic ring thus forming a depression or groove upon each side of the said metallic ring. The stepped formation is continued throughout the sides of the flanges of the spool and this produces a very desirable result in that the carbon powder, which is ground from the brush, oil and dust, and so forth, is thrown off from the upper surfaces of the steps by centrifugal force when the spool is in operation, and thus prevents the formation of a conducting path. The stepped formation on the flanges of the spool starts at a surface which is somewhat below the conducting ring or segment, and from there on it con tinues to the upper portion of the flange and in the form shown in Fig. 1 it continues on the outside surface of the flange.

The stepped formation designed by me increases the surface and thus lessens the likelihood of the current arcing over to ground.

Another very desirable effect of the annular steps is to dispose of the dust and so forth that may form on the upper surface of the steps, and thus the surfaces are kept clean. The deleterious material due to dust and oil will not rest upon the upper surfaces of the steps because it will then be thrown off of the surfaces due to centrifugal force when the spool is rotating when in use.

In Fig. 4, I have shown an insulating device provided with three circumferential radially extending

flanges

20, 21 and 22, two of the

flanges

20 and 22 extending from the outer ends of the body of the device and the third flange 21 extending from the body midway between the outer flanges. The central flange is double the thickness of either of the outer flanges and is provided on each surface with a series of circumferential steps 23, the flange progressively decreasing in thickness step by step from its base to its periphery.

The

outer flanges

20 and 22 are provided on their inner surfaces with a formation similar to that on each of the surfaces of the inner flange, and the outer surfaces of the body and flanges are smooth, which latter construction is also shown in Fig. 3.

In the central hole 19 of the construction shown in Fig. 4 I provide a lining of suitable material preferably metal, which is in the form of a tube 30 disposed within the center of the insulator and fitting closely thereto as shown.

The insulating portions of my device may be made of any approved insulating material, but I prefer to use in this construction a material known in the art as electrose.

It is to be understood that the above description and drawings are merely illustrative and the invention is not to be limited in any respect, except as defined in the subjoined claims.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a spool insulator, a body portion of insulating material, said insulator having an axis of rotation and provided with a plurality of circumferential flanges of insulating material radially extending therefrom, a metal strip secured to the surface of said body portion, between adjacent flanges, the contour of said flanges being serrated to extend or enlarge the surface area thereof.

2. A spool insulator provided with circumferential radially extending flanges, the surface of a flange being lengthened by an annular step formation consisting of a series of cylindrical and vertical surfaces, a raised metallic portion and a raised insulation portion in the body between the flanges, the shape in cross section of the raised metallic portion being similar to that of the raised insulation portion, the raised metallic and insulation portions extending entirely around the central portion of the body, forming a gutter or groove between the raised surfaces and the flange.

3. A spool insulator provided with circumferential radially extending flanges having both surfaces of a flange lengthened by an annular step formation consisting of a series of cylindrical and vertical surfaces, a metal strip secured to the body of the spool extending partially therearound, a portion of the metal strip being raised from the surface of the body, a body of insulating material of the same width and height as the exposed body of metal situated between the extremities of the metal strip, formin grooves between the flanges and the sides 0 the exposed portion of metal and the raised portion of insulating material encircling the body of the spool.

4. In a spool insulator, a body portion of insulating material, said insulator having an axis of rotation and provided with a plurality of circumferential flanges of insulating material radially extending from the said body portion, a metal strip secured to the surface of said body portion between adjacent flanges, the said flanges having their surfaces formed in a series of annular steps, each step including a cylindrical surface, said cylindrical surface being parallel to said axis of rotation of said spool, all points of said cylindrical surface being equally distant from said axis of rotation of the spool.

5. In a spool insulator, a body portion of insulating material, said insulator having an axis of rotation and provided with a plurality of circumferential flanges of insulating material radially extending from the said body portion, a metal strip secured to the surface of said body portion between adjacent flanges, said flanges having their surfaces formed into a plurality of cylinders, the surface of each of said cylinders being parallel to said axis of rotation, and all points on each cylinder being equally distant from said axis of rotation of the spool.

6. A spool insulator provided with circumferentially arranged flanges, a raised metallic surface in the body portion between the flanges and a raised insulating surface in the body portion between the flanges and between the extremities of the metallic surface, providing annular grooves between the flanges of the said raised metallic and insulating surfaces.

7. A spool insulator provided with circumferentially arranged flanges, a raised metallic surface in the body portion between the flanges, a raised insulation surface in the body portion between the flanges and between the extremities of said metallic surface, forming grooves between the circumferentially arranged flanges and the sides of the centrally raised metallic and insulating surfaces.

8. In a spool insulator, a body portion of insulating material, said insulator having an axis of rotation and provided with a plural ity of circumferential flanges of insulating material radially extending from said body portion, a metal strip secured to the surface of said body portion between adjacent fianges, said flanges having their surfaces formed into a series of annular steps, each step comprising vertical and cylin- 10 drical surfaces, each of. said cylindrical surfaces being parallel to said axis of rotation of the spool.

In witness whereof I have hereunto set my hand at the borough of Manhattan, city,

county and State of New York, this 19th 15 day of March, 1917.

LOUIS STEINBERGER. In presence of IsABnL R. RICHARDS, ZITA M. GRAHAM.