US2480691A - Swing - Google Patents

Description

Aug. 3), w49. cf N. ANDERSON SWING Filed DeG. 23, 1946 Patented Aug. 30, 1949 STATES i SWING l 'Y Chester N. Anderson, Wichitaraus, Tex; y Application December 23, 1946, Serial No.-718,066

z claims. (chata-1y Yinverted playgroundY swing ofi which the. following isa specification.

The primary object of this invention resides in the provision of a new and novel swing adapted to be used in playgrounds and playyards for the amusement and healthful exercise of children.

Another object of this invention resides in the provision of a swing which is entirely new in construction and operation in view of those swings in use today.

Still another object of this invention resides in the provision of a swing of the nature described which is sturdy and durable with a minimum of moving and working parts likely to become worn or broken, and a swing which is of simple and inexpensive design.

Further improvements and advantages of this invention will readily appear to those skilled in the art when the following description is read in the light of the accompanying drawing.

The drawing is a perspective pictorial view of the assembled swing.

Referring now to the accompanying drawing which illustrates the preferred embodiment of this invention, A designates a U-shaped base for the swing comprising three eight inch by eight inch rough timbers of pine or the like adapted to be positioned end to end to form the Ll-shaped base for the swing which is positioned in a flat condition on the ground.

A pair of identical elongated triangular frames I and 2 of approximately one inch diameter pipe are secured by depending feet 3 and 4 to that upper surface of each of the side timbers of theY base with their apex 5 vertically disposed thereabove.

A fourth timber 6 lies in an interconnecting position on the upper surfaces of the side timbers of the frame A with the opposite ends thereof directly beneath each of said apexes of the frames Y i and 2 and in such a manner so that the base side of each frame lies upon the upper surface thereof. A pipe extension 'I interconnects the base sides of each of said frames in alignment with and at a slight spa-ced clearance above the timber 6.

A pair of pipe extensions 8 interconnect each of said apexes 5 angularly with the extension I each at a spaced distance outward from the center thereof. These angular extensions form strengthening braces for the frames I and 2.

A tubular bearing is provided about the extension 'l at the center thereof between the base ends of the braces 8. The bearing 9 is provided with a piuraiityofgrease fittings liuV thereon to enable the complete lubrication ofthe swivel.

YA pairoftriasuiarframes I are secured with their lesser angle a-pexes t2l 'secured' at a spaced distance apart to the tubular bearing 9 so that the triangular frames I I extend vertically in parallel positions and in transverse alignment of the swing base, said frames having their upper ends at a spaced distance above said side frames I and 2. These frames I I are interconnected by a plurality of spaced rungs I 3 extending from the lower ends thereof upward to terminate at a position adjacent the upper ends.

Side braces I4 strengthen the frame between its own sides.

A pair of lubricated pipe swivels I5 are rotatably mounted on corresponding vertical braces IB one on either of the frames II at a spaced distance between the base and the upper end thereof. These swivels I5 are provided With an outwardly disposed eye hook I1 adapted to be firmly secured to one end of a tempered steel coil spring I 8.

The second end of said spring I 8 is secured to a chain eye I9 carried at the upper inner side of the apex of each of said outside brace apexes 5.

A cylindrical drum 20 is mounted horizontally between the frames I I at a spaced distance from the upper ends thereof providing a seat for the swing occupant.

Thus it may be seen that a child may climb upward the rungs I3 of the swing frame I I to gain a seat on the drum 20. Then by exerting a swinging motion back and forth in alignment with the longitudinal axis of the swing base the swing frame II will pivot and rock on the transverse bearing Si allowing the swing to move in one direction and then another to the extent of the limit allowed in each direction by the resiliency of the springs I8, the resiliency limit of which will increase with an increased swinging effort.

It may also be seen that the cross braces and rungs of the swing frame provide limited apparatus for Vfurther exercises such as chinning and the like.

Having thus described the construction and function of this invention and with full belief that modifications in size, shape and general characteristics would not constitute a departure from the spirit of this invention, what I desire to claim in Letters Patent is:

l. A swing of the character described comprising a substantially iiat rectangular base, a pair of triangular upright braces, vertically supported in spaced parallel relationship transversely of said base member, a cylindrical extension interconnecting the triangular uprights at the bases thereof, a pair of angular braces interconnecting the upper ends of said triangular braces with points at spaced relationship on said cylindrical extension, a tubular bearing rotatably mounted on said cylindrical extension at the center thereof, a swing frame comprising a pair of interconnected identical triangular frames vertically supported and being rconnected with the tubular bearing, to pivot therewith on the longitudinal axis of said cylindrical extension, a pair of vertical pipe swivels mounted on the swing frame at points intermediate the ends of the swing frame, and coiled springs interconnecting said pipe swivels with the upper ends of the upright braces, said springs limiting pivotal movement of said swing frame about said cylindrical extension.

2. A swing of the character described comprising a flat base member adapted to be horizontally supported on a-supporting surface, a pair of triangular upright braces vertically supported in spaced relation transversely of said base member,

a bearing -member interconnecting the triangular uprights at the lower ends thereof, a pipe swivel rotatably mounted on said bearing member at the center thereof, an elongated swing frame vertically supported on said swivel between said uprights and paralleling them, and spring members connected with the upper ends of the triangular supports, said spring members extending downwardly and being connected with the elongated swing frame at points intermediate the ends thereof, regulating the movements of the swing, and said swing adapted to swing forwardly and rearwardly between said uprights.

CHESTER N. ANDERSON.

REFERENCES CITED The following references are of record in the ile of this patent:

UNITED STATES PATENTS I Number Name Date 135,738 Tuttle Feb. 11, 1873 1,939,927 Shael' DBC. 19, 1933

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