US809048A - Vehicle. - Google Patents

Description

PATENTED JAN. 2, 1906.

J. FURGHTBAR.

VEHICLE. APPLTOATIOI FILED AUG. 26

WITNESSES;

ATTORNEYS JOHN J. rmion'rsas, OFJQETTA, trainers.

. versions.

Specification of Letters "Patent. i

Patented Jan. 2, 12412.

' Application filed August 26,1905. Serial No. 275.881.

skate, and the like. r

The invention consists ofnovel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in theiclaims.

A practical embodiment of the invention is representedin the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a longitudinal sectional side elevation of the improvement. Fig. 2 is an inverted plan view of the same, parts being broken out; and Fig. 3 is a transverse section of the same on the line 3 3 of Fig. 1.

The frame or platform Afor supporting the load 18 provided with a longitudinally-ex tending guideway A, to the bottom of which is secured the up er run of an endless immovld. yieldingly in an extended position by an air-cushion C, which also supports the frame or platform A. On the immovable or fixed band B is superimposed a traveling band D, which forms the tread of the vehicle and comes in contact with the surface over which the device is to travel. A lubricating-pad E is interposed between the upper runs of the bands B and D, so as to keep the contacting surfaces of the said bands proplerly oiled or lubricated.

T e air-cushion C is provided at one side wlth a suitable valve F for connection with an air-pump or similar 'machine employed for inflating the air-cushion C by pumping air into the same. The bottom of the aircushion C and the lower run of the fixed band B are provided with registering apertures C and B to allow some of the air in the cushion C to pass between the lower runs of the bands B and D with. a view to reduce the frictional contact of the said bands at the lower runs to a minimum.

suitable means what-ever, then the outer band D is caused to travel over the fixed or inner band B,'it being understood that the lower run of the said outer or traveling band D comes in contact with the surface over which the device is to be propelled, and hence the frictional contact of the outer hand with the said surface causes it to travel. By the arrangement described the air-cushion C holds the fixed band B in an extended position, as described and shown in the drawings, and at the same time the said air-cushion supports the frame or platform A, carrying the load, and when the band D travels over uneven or rough ground it is evident that the air-cushion 0 allows the bands D and B to yield "to conform to the unevenness in the surface.

The device is very simple and. durable in construction and allows the carrying of heavy loads with comparatively little power or exertion on the part of the person drawing the sled or similar device forward.

The bandsB and D are preferably made of steel or like flexible material, while therushi on .C may be made of rubber or the like.

Having thus described my invention, 1 claim as new and desire tosecure by Letters Patent 1. A vehicle provided with a yi'eldinglysustained immovable endless band, and a traveling endless band superimposed on the said immovable endless band and adapted to frame, an air-cushion for sustaining the said frame, an endless band fixed to the frame, and a traveling band superimposed on the said fixed band and adapted to travel on the, same.

4. A vehicle provided with an immovable endless band. a traveling endless band superimposed on the said fixed endless band and adapted to travel on the same, an air-cushion for sustaining the said innnovable band, and means for delivering a strata of air between the said bands from the said air-cush 1011. hen the device is drawn for 11rd by any 5. A vehicle provided with a pneumatically-sustained immovable endless band, and

prsence of nun. in

he said 1

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