Патент USA US2105994код для вставки
Jan. 18, 1938. P, ZELEZNOFF' 2,105,994 WHIPPING TOP Filed July 12, 1937 PHIL/P ZELEZNOFF INVENTOR BY ?/m /7' Womf ATTORNEY Patented Jan. 18, 1938 2,105,994 UNITED‘ ‘STATES PATENT OFFICE 2,105,994 WHIPPING TOP Philip- Zelezno?’, Philadelphia, Pa. Application July 12, 1937, Serial No. 153,165 '1 Claim. (01. 46—70) My invention relates to whipping tops and has particular reference to toy tops which are set in rotation by a piece of string. My invention has for its object to provide a top which has a relatively large rotational inertia sov that it can maintain its rotation for a long time once it is set in motion, having at the same time a low center of gravity in order to. render the top more stable and more readily to maintain its II axis in the vertical position. For this purpose I make my top in the form of a short cylinder of a, relatively large diameter, comparable to its height, with a short rounded leg on which the top rests during its rotation. Another object of my invention is to provide a top which can be set in rotation by a piece of may be provided with‘ ornamental lines or stripes 5.‘ The top is preferably made of a moderately heavy and inexpensive substance, such as wood or a composition. For spinning the top a whip is used consisting of a string 6 attached at one Cl end to the end of a rod or handle ‘I. The other end of the string is placed on thermiddle por tion of the top as shown in Fig. 1 and is held by subsequent turns as the string is being wound. The top is then held in. the left hand as shown in dotted lines in Fig. 1, the handle being held in the right hand (or vice versa for a left handed player) .' The handle is then quickly moved away ' from the top while the latter is still held be tween the ?ngers, permitting it however to start 1-3 its rotation. The top is then released and con string wound around the middle portion of the, tinues accelerating its rotation as the string is top and quickly pulled o?' the top while the latter I completely unwound when the top is in the .air is being-held in a player's ?ngers. To facilitate or dropped on the ?oor. ‘the holding of the top while it is being started When properly handled, the top makes but a on its rotation, the upper and lower ends of the‘ » few ?rst revolutions while it is held between the top are rounded oif, the top being retained in its upper portion by the thumb of the player, the bottom being supported by two ?ngers, passing the leg of the top between them. In order to provide for the greater speed of movement of the string in spinning the top, I at tach one end of the ‘string to the end of a rod whose other end is held in the player’s hand. Another object of my invention is to provide means to maintain the rotation of the top after it has been started. For this purpose I make the rod with the string in the form of a whip which‘ can be used not only for starting the top but also for continually maintaining its rotation by whip ping the top from time to time. While the top is of a substantially cylindrical form, its sides may be somewhat modi?ed by mak ing them slightly bulging so as to resemble a 40 barrel, or concave, of an hour glass shape. My invention is more fully described in the settled on the floor. With a little practice the top can be spun very quickly and effectively by this method. The top, because of its relatively large diameter and massive construction, has a relatively large inertia and continues to turn for a long time after having been started. Its rotation can be accelerated, however, or main tained by periodically whipping the top with the string 6, giving the handle ‘I a snappy swinging motion. Such an acceleration by whipping action is effective when the string touches the middle portion of the top, which must be for that purpose of a relatively large diameter, preferably ap proaching the cylindrical shape and having the accompanying speci?cation and drawing in upper and lower ends of the same diameter. Which leg 4 must be relatively short to avoid hitting it by Fig. 1 is a side View of my top ready to be started and held in the player’s left hand, the latter be the whip. ing shown in dotted lines. ' Fig. 2 is a top plan view of the same. Fig. 3 is a side view of a modi?cation. My top represents a barrel-shaped body I of a relatively large diameter comparable to its height. It has convex upper portion 2 and similar bottom portion 3, the latter having a rounded or sharp-pointed leg 4. The main body is substan tially symmetrical in the vertical direction, the 55 diameters at the top and bottom being equal. It 0 ?ngers and is quickly pulled ‘out of the hand. The string is usually completely unwound during the time the top is dropping from the hand to the ?oor, although with a very long string 6 the. last turns may be unwound after the top has N) 5 The ' A modi?cation is shown in Fig. 3, the middle portion being of a reduced diameter approaching an hour glass shape, and‘ also having circular ribs 8 on top and bottom‘. _ , The shape of my top can be further mddi?eGrW provided it is substantially of the same diameter 50 at the top and bottom and there is a space in the middle for winding the cord. It is understood that my top can be used not only on the floor in living quarters, but also out doors, in schoolyards, on the pavement, and 55 2 4 2,105,994 even on the ground if it is suf?ciently ?rm and smooth. \ I claim as my invention: A whipping top comprising an approximately cylindrical main body of relatively large diameter having an arcuate convex upper surface and an arcuate convex lower surface, and a relatively thin cylindrical leg extending from the lower surface, the top being adapted to be set in rotation by a cord wound around its body portion, the lower 10 surface around the leg forming an annular shoul ?er adapted to be supported on the player's ?ngers with the leg extending therebetween and therethrough, the upper surface of the top being adapted to be centrally held by the player’s thumb, the top being adapted to be set in rotation by pulling the string, and the leg being adapted to guide the top in its initial rotation between the ?ngers, the top to be then dropped to the ground where the initial rotation keeps it in motion until the whip, can be used to prolong the rotation inde?nitely. ' ' PHILIP ZELEZNOFF.