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Publication numberUS452642 A
Publication typeGrant
Publication dateMay 19, 1891
Filing dateMay 21, 1890
Publication numberUS 452642 A, US 452642A, US-A-452642, US452642 A, US452642A
InventorsCharles P. Harris
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Game puzzle
US 452642 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)


No. 452,642. Patented May 19, 1891.

O a Q L7 W/CJJGS v jig/72, 01? Wa 62/45, 20 45 .UN TED STATES PATENT OFFICE.



SPECIFICATION forming part of Letters Patent No. 452,642, dated May 19, 1891.

Application filed May 21 1890. Serial No. 352,601. (No model.)

T0 all whom, it may concern.-

Be it known that I, CHARLES P. HARRIS, a citizen of the United States, and a resident of the city and county of San Francisco, State of California, have invented certain new and useful Improvements in Game Puzzles; and I do hereby declare that the following is a full, clear, and exact description of said in- Vention.

This invention relates to those forms of game puzzles in which the solution of the puzzle or attainment of its object depends upon the manual dexterity or sleight of hand of the operator. Generally speaking, it belongs to the class in which a rolling ball is caused to traverse a tortuous or interrupted passage or series of passages. In the bestknown embodiment of this idea the interest of the puzzle lies in the difficulty of collecting a number of balls in the center of a series of concentric rings having oppositelyplaced openings. The object of my puzzle, however, is to provide a maze composed of a continuous but exceedingly-tortuous passage having blind passages branching from it in all directions, and to use a single ball, which is caused to traverse these passages by shifting the device in the hand so as to arrive at the center or other fixed terminal point.

The apparatus consists of a base, on the inside of which are formed grooves constituting the maze, a transparent cover, and ball confined between the base and cover and traversing the grooves. In this general statement of construction is included the device which I prefer to use-viz., a pair of glass plates, each provided on the inner surface with coincident ribs, so as to form a maze of registering grooves. These plates when socured together will confine a ball of mercury or colored glass or a small shot, and may be held in any position-horizontal, vertical, or

inclined-4n manipulation.

Referring especially to Figs. 1 and 2, A represents a glass plate of, say, three-sixteenths of an inch in thickness and having an edge flange at extending entirely around it. This plate is formed in the mold or otherwise with the maze B composed of raised ribs Z; so disposed as to give a continuous passage from some point on the edge to the center and numerous blind passages extending in all directions, as shown. The exact configuration of the maze is of course immaterial. The ribs are of substantially the same height as the edge flange a.

0 represents a plate of glass, which is a duplication of plate A, having coincident ribs and edge flange. These plates are secured together by cementing the flanges or in any other mannerfor instance, as shown in Fig. 4, which is a detail view of the corner of the combined plates. Registering passes a pin (Z, having a round head 6 at one end and a thread f at the other, upon which is screwed up a nut g, similar in shape to the head 6. This secures the plates together and at the same time forms a standard to support the corner of the plates and prevent the Of course the plates would be secured in this I way at each corner if rectangular, and if round at convenient points near the edges.

In making the plates coincident recesses h the ball 11 to the interior. Where a ball of mercury (which I prefer) is used, it is advisable to tightly seal up this opening in any convenient way. Should a hard metallic or glass ployed to close the opening. The ball thus runs freely in the passages produced by the abutting ribs, and in manipulating the de vice it may be held in any position, accordposition of the ball at any time. Every movement may be distinctly observedifrom either side.

In the modification illustrated in Fig. 3, the maze is formed upon the base-plate only, and the cover is a plane glass plate which fits closely to the face of the ribs and produces a series of closed passages similar to those before described.

holes are formed in the glass, through which scratching of either glass by surface contact.

are formed at one edge to give a hole to admit ball be used, a removable plug may be em- 0 ing to the direction of the passages and the 5 to traverse said maze, in combination with headed pins passing through the plates,.and nuts upon said pins, substantially as and for the purposes set forth.

In testimony whereof I have hereunto afiixed my signature in the presence of two witnesses.



H. I). IIAWKs, Geo. W. COOK, Jr.

Cooperative ClassificationA63F7/044