US82998A

US82998A - Improvement in swings

Info

Publication number: US82998A
Authority: US
Publication date: 1868-10-13
Anticipated expiration: 1885-10-13

Description

@fg/'fm N. PETERS, PNOTO-LITI'IOGRAPHERy WASHiNGTON. D C.

k @thu 5mm mi @zum i (time w GJERGEA. SEAVER,'OF NEW YORK, N. Y.

Letters. Patent No. 82,998, datedOctobe/r 1 3, 1868.

IIWPROVEMENT IN SWING-S.

To all whom 'it 'may concern.: v

Re it known that l, Gnonen A. SEM'ER, of New York, in the county and State of New York, have invented a certain new and useful Improvement inf enee marked thereon.

llbe object of my invention is to enable the sitter in an ordina-ry swing, with a single seat for the reception ot' one person, to operatethe swing without assistance. ,'lo a `eomplish this object, the said invention consists of an additional rope or pair of ropes attached to the upper part of the frame, slightly in advance of the points of suspension of the swing, and communicating with the sus]enson-ropes, by means of sliding sockets, at points eonvenient for the hands of the person swinging. v

'lo enable others skilled in the/arts to which it appertains to make and use my invention, l will proceed to 'describe its eonstrueton and opera-tion with reference to the drawing.

lhe swing-seat a is hung on a pair of suspensionrods or ropes, b, attached to the cross-piece of an upright frame in the usual manner. I

lhe pr peiling-ropes c are attached to a-n eye-bolt, rl, on the eross-pieee, slightly in advance of the bolts to which the swing ishung, and they are secured by eyes, or otherwise, io cylindrical sockets, e, that slide loosely on the suspeiision-ropes I), which pass through them at a point convenient for the graspot'a person in meupation of the seat.

ln beginning without assista-nee, the person who wishes to swing, pushes himself and the seat backward, and, when at the extent of the vibration, pulls downward on the handles or sockets e, which causes the return portion of the vibration to be made more l'oreibly than would have been done by the force of marit-,rv alone, from the points of suspension, by the addition of the mnsenlar power applied at the more eilietive angle of the prolveiling-ropes. v

The greater the distance at whi'eh the. propellingropes are hung in advance of the points of suspension, the more :ulvantageous will be the angle atv which the force ol' muscular energy will be exert-ed to increase the return vibration due to gravity, and this distance should be that which willfurnish a rise and fall of the sockets on the suspension-ropes Within the convenient reach of the arms of the person for Whose use the swing may bc chiefly intended.

,In the same manner, the force of the vibration may be increased at each return to the extreme point of the backward vibration, until the limit has been reached, the handles or sockets being forced down on the suspensionropcs in the forward swing or portion of the'vibration, and being permitted to slip up on the ropes as the seat swings back.

This propelling-attachment may be used to stop the swing more quickly than can ordinarily be done, by using it in the reverse Way, or bearing down upon the handles as the seat swings backward.

The enlarged size ofthe handles obviatc's one objection to a rope orrod that may be large enough to answer all the requirements of strength, and be too small to admit of a comfortable grasp.

The exercise of the arms, and the muscles calledA into play by their exertion, is a'valuable-addtion to the pleasure and beneiit that may be obtained from an ordinary swing.

The propelling-ropes also'serve an important purpese, in the nature of a safeguard, in addition to their primary office of enabling the occupant to swing hirnself, for, in the event of a breakage of the suspensionropes, or an accident to the hooks or eyes, by which the person would otherwise have been necessarily flung with more or less olence to the ground, the grasp upon the propelling-ropes'would serve at least to-break the force of the fall, even if the hold upon the handles were not sufficiently rrn and the strength of the propelling-ropes suciently great to entirely obviateit.

The handles may be made in halves, so that they may be readily applied to any ordinary swine.

l claim as my iuventionhe combination of the propelling-rope or ropes with the movable handles or sliding sockets substantially as described.

G. A. SEAVER.

Vitnesscs: .e M. RICHARD 'l'.m'ERsoN7 WM. KEMBLE HALL.