US303863A - Bob-sled - Google Patents

Description

(No Model.)

J. KINNBY.

BOB SLED. No. 303,863. Patented Aug.^19, 1884.

2 l 'W111i E I my @wi E l ,/-l

A WITNESSES INVENTOR ATTORNEYS Uivirnn Srntrns PATENT JAMES KINNEY, OF GUMBERLAND, VISCOXSIN.

. BOB-SLIED.

SPECIFICATION forming part of Letters Patent No. 303,863, dated 'August 19, 1884.

Application filed March 3l, 18S-l. (No model.)

To all whom t may con/cern.'

Be it known that I, .latins KINNEY, a citizen ofthe United States, residing at Cumberland, in the county of Barron. and State ot' \Visconsin, have invented certain new and useful Improvements in Bob-Sleighs; and I do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appcrtains to make and use the same, reference being had to the accompanying drawings, and to letters or iigu res of reference marked thereon, which form a part ofthis specification.

Figure l of the drawings is a vertical sectional view of my device. Fig. 21's a top or plan view of the same, and Fig. 3`is a transverse sectional view.

This invention has relation to bob-sleds especially designed for use in connection with heavy or lumber sleighs, although it can be applied with advantage to light sleighs.

The invention consists in the construction and nov el arrangement of the laterally-flanged runner-saddle, having aslotted spherical bearing on its top, a concave bearing adapted to engage the spherical bearing, and flanged to seat the beam, the runner-bolt, and the arcform bridge-rave slotted to allow the rocking motion of the runner, all as hereinafter set forth.

In the accompanying drawings, the letter A designates the runner, and B the beam, of the bob-sled. On the runner is seated the saddlecasting C,which is formed with lateral flanges D, and a spherical bearing, E, on its top. The casting is slotted through the spherical bearing, as shown at I, to allow the play of the main bolt G in the rocking motion of the runner. The saddle C is secured to the runner by bolts I-I.

K represents a cast bearing-plate, which is secured to the transverse beam above the runner. This plate is iianged at L, to embrace the beam .in front and in rear, and it lis secured to the beam by bolts N, which pass through the casting and through the convex plate l? on the top oi the beam, as shown. This casting is formed with a spherieally-concave bearing, It, in its base portion, which is designed to correspond with the convex bearing E of the' saddle-casting on the runner,

which is engaged thereby. The marginal ledge or shoulder S of the spherical bearing E is designed to form a stop to prevent the runner from leaning too much in any of its 5 movements. In order to bring the load near the runner, which is advisable in heavy sleighs, as well as to strengthen the connection between the beam and the cast bearing-plate K, a concave or transversely-arched recess is eut in the under side of the beam, as shown at T, and the top of the casting is similarly arched to fit in this recess neatly, as shown at V. The main bolt extends through the upper beamplate, I), and the nut .I is turned on its upper end. v

Z indicates the arched rave, which is formed of broad wrought-iron bar, and its end portions are bent downward to provide thc knees W, which are bolted to the runner. Just above the bends of the knees, at the ends of the arch of the rave, are formed short bends or bearings a, which are adapted to facilitate the use ot' skids in loading, the ends of the skids working in these bends, as upon bear- 7' ings. At the center of the arch of the'rave is formed the longitudinal slot I, which spaces the nut ofthe main bolt, and is of sufficient length to allow the sled to rock freely under the beam. In this construction the weight of the load is on the ball-bearings of the runners, and is applied directly over them through the beam. Y

The runners are designed to have a certain amount of independent rocking action, both S directly and obliq11ely,whioh is of importance in securing ease of movement, not only in starting the sleigh when loaded, but in keeping it properly moving in the road.

Cross chains are generally employed between the front and rear sleds, and in starting a heavy load an oblique draft is applied, operating, first, upon one front runner and then upon the opposite rear runner, and in this way a heavy load can be started, which could not be moved it' all the draftwerc applied to all the runners at once; and when in motion, the capability of the runners to rock in the oblique direction gives them yielding character, which enables them to keep the road, ion

while a more positive and rigid construction would cause the sled to cut out of the road and upset the load, or become fastened in an embankment or drift.

Having described this invention, what I concave bearing-platezilanged to seat the claim, and desire to secure by Letters Patent, `beam7 of a cast runner-saddle having a slotted is spherical bearing on its top, and the main 15- 1. In a bob-sled, the combination, With-the bolt connecting the beam andrunner, sub- 5 east runner-saddle having a slotted spherical stantially as specified.

bearing on its top, of the cast concave bear- In testimony whereof I affix lny signature ing-plate adapted to engage said spherical in presence of two witnesses. bearing and i'langed to seat the bean1, the rnnner-abolt, and the arc-form bridge-rave, JAMES KINNEY' Io slotted to allow the rocking motion of the Vitnesses:

runner, substantially as specified. L. L. GUNDERsoN,

2.'In a bob-sled, the combination, with a BENNIE JOHNSON.

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