This print is a quality reproduction of the original filed patent artwork titled above. The displayed image above is a low-resolution graphic optimized for quick web display. The actual print you receive will be a detailed high-resolution print free of any defects or watermarks.

The artwork is printed in black on archival quality acid-free 8 1/2" x 11" simulated parchment stock replicating the authentic look and feel of the original patent. The actual artwork image size varies according to the original document but your print can be readily cropped to fit an 8" x 10" display frame.

This prestigious museum quality print is perfect for framing or mounting as you wish in any home or office as decorative wall art. Keep for yourself or great for gift giving to the avid collector. Great conversational piece!

Also included at no extra-charge are the remaining patent text and drawing pages (when applicable) describing this invention in detail. Most patents include a copy of the inventor's original signature (or signed by their patent attorney) on the artwork. Fascinating reading!

These are not construction plans or blueprints. This print is perfect for the collector who wants historical background on the above item. Some of the text may be hard to read but the illustrations are enhanced to meet or exceed the originally submitted patent artwork design and at the same time maintaining an authentic look from that era.

The following information was scanned and read with OCR directly from a copy of the original patent. We apologize for any difficulty in reading the OCR text; however it will give you a very good idea of the background of the patent print you will receive.

A. C. WURTELE. Gyroscopic Toys.
No. Patented June 17 1873.
AM PHOTO-L1THbGRAPHIC CO. N.Y(OSBORNE'S PROCESS
STATES PATENT OFFICEº
ARRCHIBALD C. WI7RTELE OF NEW YORK N. Y.
IMPROVEMENT IN GYROSCOPIC TOYS.
Specification forming part of Letters Patent No. dated June 17 1873; application filed
April 26 1873.
To all whom it may concern:
Be it known that I ARCHIBALD C. WURTELE of New York city in the county and State of New York have invented a new and useful Improvement in Gyroscopic Toy of which the following is a specification :
The figure is a perspective view of my improved toy.
My invention has for its object to furnish an improved toy which shall be so constructed that by giving a rapid motion to a wheel suspended in it it may be made to revolve in various positions and directions.
The invention consists in an improved gyroscopic toy formed by the combination with each other of the base the pivot the outer ring the arm and ring the inner ring and its screw-pivots and the wheel and axle and its screw-pivots; and in the combination of the suspended weight with the toy as hereinafter fully described.
A is the base to which is attached a pivot B upon the upper end or point of which is pivoted a ring C. To the ring C at a little distance from its pivoting-point is rigidly attached an arm D which projects downward parallel with the pivot B. Upon the lower end of the arm D is formed a ring d' through which the pivot B passes. E is a ring made smaller than the ring C the opposite sides of which are pivoted to the opposite sides of the ring C and at right angles with the axis of said ring C by two set-screws F. G is a heavy wheel attached to an axle H. The wheel and axle G H are pivoted to the opposite sides of the ring E at right angles with the pivots of said ring by two screws I the points of which rest against the ends of the axle H. J is a weight which for giving some movements to the toy is suspended from one of the screws I. Motion is given to the wheel G by means of a cord wound around its axle H and drawn off in the same manner that motion is given to a humming-top. The instrument is then placed upon its pivot or stand and the ring E is brought into a horizontal position the wheel G revolving in a vertical plane. If now the ring C is turned upon its pivot the wheel G will move to and revolve in a horizontal plane its axle H being vertical. The particular end of theaxle H that moves upward will depend upon the direction in which the ring E is turned upon its pivot; and its ends can be reversed at will by simply changing the direction in which the ring C is turned upon its axle. While the axle H is horizontal there is considerable resistance encounted in turning the ring C upon its pivot but when the axle H becomes vertical the ring C will turn easily the force of the resistance depending upon the velocity at which the wheel G may be revolving. The wheel G and inside ring E may be made to revolve together upon the screw-pivots F of the outer ring by turning the ring C alternately to the right and to the left changing the motion as soon as the axle H becomes perpendicular. It will revolve in one or the other direction according to the direction in which it is started. When the wheel G is revolving with its axle H horizontal if the weight J be hung upon one of the screws I the ring C will begin to revolve upon the pivot B to the right or left according as the weight J is hung upon one or the other of the screws I the ring C turning slower or faster according as the wheel G be revolving faster or slower. When the wheel
G is revolving rapidly with its axle H in a horizontal position and pointing in auy direction as for instance north and south if the stand A B be raised and the person holding it turn around in either direction the position of the wheel G will remain the same its axle
H always pointing north and south or in the same direction as when raised.
Having thus described my invention what I claim as new and desire to secure by Letters Patent is-
1. The improved gyroscopic toy formed by the combination with each other of the base A pivot B ring C arm and ring D d' inner ring E screw-pivots F wheel G axle H and screw-pivots I substantially as herein shown and described:
2. The combination of the suspended weight
J with the parts A B C D E F G H I substantially as herein shown and described.
ARCHIBALD C. WITRTELE.
Witnesses:
JAMES T. GRAHAM
T. B. MOSHER.