US444796A - Globe - Google Patents

Description

J. LYNAM@ GLOBE.'

Patented Jan. 13,1891.

(No Model.)

WI'THESEES:

PATENT JOSEPH LYNAM, OF SAN JOS, ALIFORNIA.

GLOBE.

SPECILFICATION forming part of Letters Patent No. 444,796, dated January 13, 1891.

Application filed March 7, 1890. Serial No. 342,974. (No model.)

To all whom, t may oon/cern:

Be it known that l, JOSEPH LYNAM, a citizen of the United States, residing in the city of San J os, county of Santa Clara, and State of California, have invented certain new and useful Improvements in Globes, of which the following is a specification.

My invention relates to the production of a globe of the terrestial or the celestial sphere and a support or stand in parts to be taken apart and packed in small compass for transportation or storing and capable of being readily put together and set up for use without any special skill.

The invention includes a globe of the terrestial or the celestial sphere made in separate pieces or sections and novel means of fastening and holding these sections together; also, improved device for suspending or for supporting` it on a center for rotation; also, an improved construction of magnetic pole.

The nature of these improvements andthe manner in which I proceed to construct, produce, and carry out the same will be understood from the following description and the accompanyingdrawings, that form partthereof, and is referred to therein by figures and letters.

' Figure l represents a globe constructed according to this invention and t-he device for suspending it. Fig. 2 shows the same globe mounted on the supporting-stand. Fig. 3 is a vertical section through the globe and the fastening devices on a larger scale. Fig. 4 is a horizontal section through one of the separate pieces or sections of which the globe is formed. for degrees of longitude. Fig. 6 is an enlarged transverse section of the magnetic pole.

This globe is made in separate pieces or sections of equal size, which may be quarters for a small globe and smaller sections for a globe of larger diameter, and the parts join ing one to the other onlines of longitude from pole to pole are finished on the edges to make close joints.

The surface of the globe has the continents, islands, and other land portionsin relief, with the contour of the surface properly shaped to represent all the natural elevations and depressions of surface, the globe-sections being Fig. 5 is a movable scale or measure produced either by dies or molds orbybuilding up by hand from any suitable substance or material in similar manner to the production of relief-maps. papieimacl1, or other material that can be struck up or pressed in dies, or any material or substance that can be run in the molds or pressed into shape, can be used to make these globe-sections.

On the edgesof each globesection are ilz'mges that set inward toward the center, the faces of which are grooved or finished smoothly to produce close joints along the meeting edges. These flanges are increased in depth from the poles toward the equator to strengthen the section at the center. A shoulder or rim is formed on the end of the sections that tits closely around a bolt having a clamp-nut on the outer threaded end. These shoulders form a neck to take a washer, and the bottom face of the nut, setting against the washer, acts to draw and hold the sections tightly together, the outer face of the neck being finished with a taper and the inner edge of the washer being beveled to fit the neck. lVhen the nut is screwed down, the washer is crowded against the neck and the sections are clamped between the head of the bolt beneath and the nut above. The heads of the nuts are turned down to lit bearings on the end of a semicircular bail and form trunnions on which the globe is free to revolve. The bail furnishes both a support for the globe when mounted on its stand and carries it when it is suspended. This bail or semimeridian, as it may be termed, being a part of the globe monntings, has a post or center pin to fit a socket in the stand, and also a` ring or loop for attaching the end of a suspending-cord, which is set up against the base by a top bolt.

The stand for the globe is constructed in parts to be separated for packing, and is cour posed of a base-block with a socket for the center post, removable legs, and a clamping device to hold the leg in place when set up. The base is slotted to let in the legs, and the ends of the legs that set into the base are- Paper or paper-lpulp,or

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end of the center postand a bearing at the top. The magnetic pole is fixed in the end of the bolt that forms a part of the clampingdevice, and it is of novel construction in being composed of a central rod or core of soft iron and a number of magnetized wires or rods surrounding the core. This construction is intended to furnisha magnetic pole of considerable power and to reduce the size of yto the pole, at the same time making it sufficiently sensitive to turn the globe readily.

The construction of these parts will be read-v ily understood from the drawings, where A A indicate the globe sections, A the line of joints, and A2 the flanges on the edges.

ASA3 are the shoulders on the ends of the globe-section, and B B thc bolts that form part of the clamping devices at the poles. The head BX of the bolt is shaped to conform zo to the curvature ofthe sections against which it fits, and the body is screw-threaded for the nut D. The bottom face of the nut is rccessed to take over the neck formed by the meeting ends of the globe-sections, and its rim is milled. Y

C is the washer that is placed over the neck under the nut, its inner edge being beveled to iit the neck.

D D are the trunnions on the heads of 3o the nuts, and E E are the bearings formed on the ends of the bail F. The bail extends from pole to pole and serves to support the globe upon the stand orto suspend it in space by means of a cord and pulleys. The firstnamed position is shown in Fig. Slot' the drawings, while the other position is shown in Fig. l.

G is a "center post fixed on the bail by a tubular collar or sleeve GX, that, forms the 4o head of the post, and a clamp-screw G2, and

H is a loop or similar sleeve with a clamp-screw hx for fixing it on the bail and an veye h2 for securing to it the end of the suspendingcord X. y

I is the base of the stand, with slots I for the legs, and K are the legs, with grooved ends K fitted over the standing rim LX of the cupshaped clamp-plate L.

M is the screw or bolt, that is tapped into 5o the bottom of the base.

The construction shown in Fig. 2 has three legs, and the clamping-piece L ts into the recess in the bottom of the base.

Figs. 3 and 6 illustrate the construction of 55 the magnetic pole,P being the core or central rod of soft iron, and P* the rod-magnets surrounding it. The rod P is formed with a guardplate p2 and a screw end p3 on the bottom, that is tapped into a threaded socket p4 in the 6o end of the bolt D. The rods or wires px are set closely around the center rod, and the conical head P fixed over the ends, forms a single point to the pole. The clustered magnets are fastened at the lower ends to the collar and are confined at the upper ends by the conical cap.

The iiexible scale S (see Fig. 5) is a tape with the degrees and divisions marked on it and having one end attached toa ring S", which is fitted on the nut D below the milled edge and rests on the washer to turn loosely, the tape being left free to hang down and be shifted over the globe from one point to another.

In forming the globe-sections care should be taken to have thejoiuts between one section and another fall on the lines of longitude, and by finishing the edges of the sections to give close joints the dividing-lines will be practically invisible and the globe will appear as though made in one piece.

As thus constructed and produced, it will be seen that the globe and its mounting,when taken apart for shipment, can be packed in very small compass; also that it is readily set up by a person of ordinary intelligence.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

l. A knockdown globe formed of sections joined together on lines of longitude, said sections being provided with shoulders at the pole ends and flanged meeting edges along thelongitudinaldivisions,in combination with a clamp or binding device set over said shoulders to hold the sect-ions together, as set forth.

2. A knockdown globe formed of sections which join together on lines of longitude, said sections having relief-surfaces, in combination with butt-joints with internal flanges and shouldered ends at the poles, and clamping devices by which the sections al'e bound together at the poles, substantially as described.

3. The combination or" the separable globesections having shoulders or projections on the ends, bolts having broad heads Iittingthe inside of the globe, and threaded stems which project through the ends, and nuts having clamping-fianges on their under faces to confine the shoulders, and trunnions on their upper faces, and a bail having bearings in which the trunnions operate, as set forth.

4. The combination of a sectional globe having shouldered ends, a bolt extending up between said ends and provided with a threaded opening in its outer end, a nut screwed upon the bolt and having a flange confining the shoulders of the sections, and a pole-magnet having a screw for engagement in the threaded opening in the end of the bolt, as set forth.

In testimony that I claim the foregoing I have hereunto set my hand and seal.

JGSEPI-I LYNAM. [L s] Witnesses:

WiLLIAM R. HAMMOND, JAMES B.- CAPP.

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