DE71535C

DE71535C - Rotary bodies suitable for knocking over cones and rolling in a spiral line

Info

Publication number: DE71535C
Application number: DENDAT71535D
Authority: DE
Original assignee: Fräulein H. SPERL in Amberg, Oberpfalz
Anticipated expiration: 1913-01-27
Also published as: DE67929C

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

KLASSE 77: Sport.CLASS 77: Sports.

Fräulein HELENE SPERL in AMBERG (Oberpfalz). Zum Umwerfen von Kegeln geeigneter, in einer Spirallinie rollender Rotationskörper.Miss HELENE SPERL in AMBERG (Upper Palatinate). Rotary bodies suitable for knocking over cones and rolling in a spiral line.

Zusatz zum Patente Ju 67929 vom 25. Februar 1892.Addition to the patent Ju 67929 of February 25, 1892.

Patentirt im Deutschen Reiche vom 27. Januar 1893 ab. Längste Dauer: 24. Februar 1907.Patented in the German Empire on January 27, 1893. Longest duration: February 24, 1907.

Es hat sich gezeigt, dafs die Eigenthümlichkeit, in einer Spirallinie zu rollen, nicht nur solchen Rotationskörpern eigen ist, welche aus einem halben Hohlkörper und einem halben Vollkörper bestehen, sondern dafs diese Rotationskörper, wie es auf beiliegender Zeichnung in Fig. ι bis 4 veranschaulicht ist, auch aus zwei Vollkörpern bestehen können, deren Theile α b verschiedenes specifisches Gewicht haben. Ebenso können beide Theile α und b hohl sein und gleiches specifisches Gewicht besitzen, wenn sie, wie es in Fig. 2 dargestellt ist, ungleiche Wandstärke haben. Schliefslich kann der Vollkörper auch' aus einer Masse bestehen (Fig. 3), in welcher sich aufserhalb des Mittelpunktes ein kleiner Körper c von gröfserem oder geringerem specifischen Gewicht befindet.It has been shown that the peculiarity of rolling in a spiral line is not only peculiar to those bodies of revolution which consist of a half hollow body and half a solid body, but that these bodies of revolution, as illustrated in the accompanying drawing in FIGS. 1 to 4 can also consist of two solid bodies, the parts of which α b have different specific gravity. Likewise, both parts α and b can be hollow and have the same specific gravity if, as shown in FIG. 2, they have different wall thicknesses. Finally, the solid body can also consist of a mass (FIG. 3) in which a small body c of greater or lesser specific gravity is located outside the center point.

Claims

Patent claim:

As a replacement for the one protected by patent no. 67929, which describes a spiral line when rolling Solid of revolution:

a) a solid of revolution, which consists of two parts α b of different specific gravity;

b) a hollow body of revolution of uneven wall thickness;

c) a body of revolution which, outside its center of gravity, has a body of lesser magnitude or of greater specific gravity than its own.

1 sheet of drawings.