US502925A - Archibald w - Google Patents

Description

(No Model.) 2 Sheets -,-Sheet 1.

A. W. IVES.

- SLED.

0. 502 925. I N 72W Patented Aug. 8, 1893.

m} A 7 W4 'K W E D (a a A '22 .J/I W Mg-6 m K A $2 a a F; B J g Hh JJIQ a WITNESSES: IN VENT 0R- ATTORNEY,

(No Model.) 2 Sheets-Sheet 2.

A. w. IVES.

SLED. I No. 502,925.. Patented Aug. 8, 1893.

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' WITNESSES: INVENTOH 4% J I BY v 2 W WQW' ATTORNEY.

\ :-.UNITED STATES PATENT OFFICE.

ARGHIBALD w; rvnson no'sron, MASSACHUSETTS.

SLED.

SPECIFICATION forming part of Letters Patent No. 502,925, dated August 8, 1893.

' Agassi. filed December 7,1892. s...1.11..4a,337. (No model.)

To all whom it may concern.-

Be it known that I, ARCHIBALD WARD Ivns, acitizen of the United States, residing at Boston, in the county of Sufiolk, State of Massachusetts, have invented a new and useful Improvement in Sleds, of which the following is a specification. Y

My invention relates to improvements in sleds in which the two side runners arehung so as to permit an independent vertical rocking movement of each runner.

One of the objects of my invention is to provide in a sled this independent rocking movement of the runners whichwill permit the sled to glide over rough spots with less jar and much less resistance than the sleds now commonly in use, in which the runners are rigidly fixed and permit of no vertical rocking motion. In view of the fact that my improved sled glides over rough surfaces with less jar and less resistance, itis obvious that a sled of this pattern is by far faster than a sled having rigid side runners.

Anotherobject is to provide in such a sled a seat which will accommodate itself at all times to whatever position the runners are in and thereby in no wise hinder the independent rocking of the runners.

My invention is illustrated by the accompanying drawings in which- Figure 1 is a plan view of my improved sled.

' Fig. 2 is a plan view of the lower side of the sled. Fig. 3 is a side elevation of the inner side of one of the runners. Fig. 4 is a crosssection on the plane of the line 1-1 Fig. 3. Fig. 5 is a cross-sectional elevation on the plane of the line 2-2 Fig. 3. Fig. 6 is a crosssectional elevation on the plane of the line 33 Fig. 3. Figs. 7, 8 and 9 are detailviews of modified parts of the sled. Fig. 10 isa plan view of the lower side of the sled showing a modification where the axle supports the seat. Fig. 11 is a side-sectional elevation on the line 4-4 Fig. 10. Fig. 12 is a cross-sectional elevation on the line 6-6 Fig. 10. Fig. 13 is a cross-sectional elevation on the line 5-5 Fig. 10.

A A are the runners.

B is an axle having suitable bearings D D fixed to the inner sides of the runners.

E is the sled seat. As a support for this but notjquite to the runners.

seat I provide the cross-pieces F F. Both ends of these cross-pieces are connected to the runners A A by a suitable joint Gwhich will permit universal play. This joint may be either an eye fitting into a staple fixed into the runner (see Fig. 7) or a ball and socket joint. (See Figs. 8 and 9.) One of the crosspieces F may be fixed solidly to the lower side of the seat E. (SeeFig. 6.) The other crosspiece F connecting the runners A A, in order that the seat may in no wise hinder the independent rocking movement of the said runners, is connected to the seat as shown in Fig. 4. A separate rocker H is pivoted to the crosspiece F. This rocker H is secured to the lower side of the seat and extends down to the cross-piece and is pivoted thereto at I to permit a rocking movement of the seat.

The "cross-section shown in Fig. 5 shows the axle B as extending into the bearing almost The object of this is as followsz When the runners A A are independently rocked as they accommodate themselves to uneven surfaces and glide over difierent planes itwill readily be seen that the cross-pieces F F must necessarily draw the runners slightly together. The space between the end of the axle B and the runners A A permits this take-up, which is only very slight. It is obvious that the seat E may rest upon the axle B (or the axle bearings D D) and the independent cross-piece F, instead of on the two cross-pieces F F ,but in this case it would be necessary to move the axle B farther toward one end or the other of the sled which does not give as satisfactory a rocking movement to the runners as if the axle B is placed nearer the center.

Experience has demonstrated that this style of sled is fully twenty per cent. faster than the sled having fixed side runners.

Fig. 10 shows a construction of the sled when the seat E rests on the axle or the bearings thereof, the two ends of the seat E be ing supported and held by the rocking crossbar connection shown in Fig. 4.. By this construction the independent movement of the runners is retarded in no wise.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is=

3. The combination in a sled of the rocking runners A A, shaft B, bearings D D, with the rigid cross-piece F fixed to the seat E, and the cross-piece F, rocker I-I loosely pivoted thereto and fixed to the lower side of the seat E, substantially as and for the purpose specified.

ARGI-IIBALD W. IVES.

Witnesses:

HERBERT C. WIRT, CHAS. B. BURLEIGH.

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