US1782924A - Movable meridian for globes - Google Patents

Description

Nov. 25, 1930.

J. F. JOHNSON MOVABLE MERIDIAN FOR GLOBES Filed Jan 9, 1930 y 075,72 adknsom Patented Nov. 25, 1930 UNITED STATES PATENT OFFICE JOHN F. JOHNSON, OF CHICAGO HEIGHTS, 'ILLINOIS, ASSIGNOR TO WEBER COSTELLO COMPANY, OF CHICAGO HEIGHTS, ILLINOIS, A CORPORATION OF ILLmOIS MOVABLE MERIDIAN FOR GLOBES Application filed January 9, 1930.

This invention relates to an improved type of globe and more particularly to an improved movable meridian and a supporting fork therefor provided with roller means to facilitate noiseless adjustment of the meridian with respect to the fork and furthermore having a latchin means whereby the meridian may be c ed in a predetermined set position of adjustment, permitting the axis 10 of the globe within the meridian to be positioned at different angles or degrees.

It is an object of this invention to provide a globe having a meridian which is movably supported in a roller carrying fork.

It is also an object'of this invention to provide an improved type of globe having a meridian which is movably supported on a roller carrying fork provided with means preventing removal of the meridian from the fork and also adapted to act as a latching device for holdin the meridian locked in a set position of ad ustment.

It is an important object of this invention to provide an improved type of globe having a meridian rin which is movably supporte on roller mem rs carried by a stationary fork permitting free and noiseless ad ustment of the meridian and also affording an arrangement whereby the meridian, when ad justed, may be secured in its set position of adjustment by an adjustable latching device supported on the fork in coacting engagement with the meridian ring.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

The invention '(in a preferred form) is lllustrated in the drawings and hereinafter more fully described.

On the drawings:

Figure 1 is a front elevational view of an improved globe supported in a suitable meridian embodying the principles of this invention.

Figure2 is an enlargedelevational view of the globe-fork and the movable meridian, having a part-thereof broken away.

' Figure 3 is an enlarged fragmentary de- Serial No. 419,487.

tailed section taken on line IIIIII of Figure 2.

Figure 4 is an enlarged fragmentary detailed section taken on line IVIV of Figure 2 with the set-screw in elevation.

Figure 5 is an enlarged fra mentary detailed section taken on line V- of Figure 2, with parts shown in elevation.

As shown on the drawings:

The reference numeral 1 indicates a pedestal or standard having rigidly mounted on the upper end thereof a supporting foot or base shank 2 which is integrally formed on a segment or arcuate shaped fork 3 provided with an integral intermediate socket or housing 4 and two end sockets or'housings 5. Each of the sockets or housings 4' and 5 is provided with a partition orrib 6 affording two open recesses or pockets 7 on opposite sides of said partitions. Journalled transversely through an opening in each of the pocket partitions 6 is a bearing pin or shaft 8 having flanged rollers or bearing wheels 9' rotatably supported on the rojecting ends thereof onopposite sides of the respective partition or rib 6. The rollers 9 are mounted with the flanged portions thereof positioned to the outside and with the reduced body portions thereof positioned to the inside adjacent opposite sides of the partition 6, with the peripheries of the body portions projecting slightl beyond the inner peripheral edge of the fork 3 to provide a three-point bearing for a movable meridian. I

Integrally formed on one side of the fork 3 near the foot or shank 2 is a radially directed arm or bracket 10 havinga threaded passage therethrough for the reception of a set-screw 11. The set-screw 11 is adapted to serve not only as a locking or retaining means for holding a meridian in a set position of adjustment, but also serves as a means for permitting the meridian to be rotatedwith respect to the fork but preventing removal of the meridian from its seated engagement with respect to the fork rollers 9.

The improved movable meridian com rises a graduated meridian ring 12 provide with an outer peripheral rim or flange 13 project ing on opposite sides of the meridian ring 12, with the outer peripheral surface of the flange or rim positioned to have rolling contact with the reduced or body portions of the rollers 9, while the side surfaces of the rim or flange 13 have rolling contact with the inner faces of the flanges of the rollers 9, as clearly illustrated in Figures 3 and 5. The flanges of the rollers 9 serve as a means for preventing the meridian from falling sidewise out of the supporting fork, while re moval of the meridian from the fork is prevented by means of the set-screw 11, which, when threaded through the bracket 10, has the inner end thereof projecting beyond or to the inside of the rim or flange 13, of the meridan ring 12, as illustrated in Figure 4, so that the meridian ring may be retated on the bearing rollers into any desired position of adjustment with respect to the fork, while the set-screw serves as a means for preventingthe meridian from being lifted out of the fork. After the meridian has been adjusted into a desired position, the set-- screw 11 is adapted to be threaded inwardly until the inner end thereof is brought into contact with the meridian ring 12, thereby locking the meridian ring in its set position of adjustment.

The meridian ring 12 is provided with a pair of diagonally opposite bearing sockets M- for receiving the pole ends of a shaft or axis 15 which projects diametrically or axially through the center of a globe ball. 16, rotatably engaged on the axis within the movable meridian ring 12.

With the globe ball rotatably mounted on the axis 15 within the movable meridian, it is only necessary to loosen the set-screw 11 to permit the meridian, axis and globe ball to be rotatably adjusted with respect to the stationary fork 3, so that the axis of the globe ball ma be shifted into different degrees or at di erent angles to facilitate use of the globe and afford a convenient arrangement when the globe is used as a teaching medium.

The improved arrangement of seating the rim flange of the meridian on a plurality of spaced roller sup orts facilitates the turning or adjustment 0 the meridian with practically no resultant noise and obviates scratching or wear of the meridian rim or flange 13. The mounting of the meridian between the flanges of the roller members 9 obviates wobbling and sidewise movement of the meridian and the globe supported therein.

It will, of course, be understood that man details of construction may be varied through a wide range without departing from the principles of this invention, and it is, therefore, not purposed to limit the patent granted hereon otherwise than necessitated by the scope of the appended claims.

I claim as my invention:

1. A globe device comprising a fork, means for supporting the same, a plurality of sockets formed on said fork,"partitions in said sockets, ins journalled in said partitions, pair of anged rollers rotatably en aged on each of said pins on opposite sides of the par titions, with said flanges of the rollers positioned toward the outside, a peripherally flanged movable meridian rotatably supported on said pairs of rollers between the flanges of the respective pairs of rollers to hold the meridian against sidewise movement, a bracket supported on said fork, a set-screw adjustably engaged through said bracket and projecting to the inside of the peripheral flange of the meridian to permit rotation of the meridian with respect to the fork and acting to hold the meridian against removal from said rollers, said set-screw adapted to be adjusted to lockingly engage the movable meridian to hold the same set in a predetermined position of adjustment, an axis journalled in said meridian, and a globe ball rotatably supported on said axis within the meridian.

2. In a globe device of the class described, the combination with a supporting fork, of pairs of flanged rollers rotatably supported on said fork at spaced intervals, and a movable meridian rotatably supported on said rollers between the flanges of each of the pairs thereof.

3, In a globe device of the class described, the combination with a fork, of a plurality of pairs of flanged rollers rotatably support ed thereon, a flanged meridian rotatabl 1 snpported by said rollers between the an es of each of the pairs thereof, and adjusts. le means carried by the fork and coacting with. the flanged meridian adapted to be adjusted to permit rotation of the meridian and furthermore adapted to be engaged with the meridian to hold the same locked in a set position ofadjnstment.

4:. In a globe device of the class described, the combination with a fork, of a plurality of pairs of flanged rollers rotatably supported by the fork, a rotatable meridian movably supported on said rollers between the flanges of t e respective pairs of rollers to hold the meridian in an upright position against sidewise removal from the fork, and means on said fork coacting with the movable meridian to hold the same against being lifted out of Contact with said rollers while re tatable with respect thereto and also adapted to be adjusted to lock the meridian against movement with respect to said fork.

In testimony whereof I have hereunto subscribed my name at Chicago Heights, Cook County, Illinois.

JOHN F. JOHNSON

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