US1922550A - Vehicle jack - Google Patents

Description

M. K. M COSH Aug. 15, 1933f VEHICLE JACK Filed Feb. 13, 1931 Patented Aug. 15, 1933 l 1,922,550 VEHICLE JACK Marshall McCosh, Reisterstown, Md. Application February 13, 1931. Serial No. 515,453

8 Claims.

This invention relates to vehicle jacks of the ramp type.

One important object of the invention is to provide an improved body construction for jacks of this character.

A secondimportant object of .the invention is to provide an improved wheel stop construction for such a jack. 7

A third important object of the invention is to provide a side-platform on which a hand-operated jack such as now generally used for jacking up automobiles, or someother type of jack, may be placed.

A fourth important object of the invention is to provide an improved general construction of jacks of this character.

With the above and other objects in view as will be hereinafter apparent, theinvention consists in general of certain novel details of construction and combinations'of parts hereinafter fully described, illustrated in the accompanying drawing and specifically claimed.

In the accompanying drawinglike characters of reference indicate like parts in the several views, and:

Figure 1 is a side elevation of the improved jaclr'with the auxiliary support removed.

Figure is a plan view of the entire device 30 with the auxiliary support in position for use.

Figure 3 is an end elevation of the jack as disclosed in Figure 2. v In the construction of the invention as here shown there is provided a frame including a pair of spaced longitudinal bottom bars 10 ofangle iron or other suitable material which are con: nected at their front and rear ends and at substantially their middle portions by bottom cross bars 11 having their lower edge portions pro- 40 jecting below the frame bars 10 so that, when resting on a floor, these lower edge portions engage the floor and resist longitudinal slipping movement of the jack.

Central vertical struts extend upward vertically from the bars 10 at their junctions with the middle bar 11. Rear frame barsv 13 extend. upwardly from the rear ends of the bars 10 in a forwardly inclined direction. Arch bars 14 extend upwardly and rearwardly from the forward ends of the bars 10 to points spaced somewhat in front of the upper ends of the bars 12 and then extend rearwardly and downwardly to the upper ends of the bars 12 to which they are connected, as by the bolts 15 or other suitable means, and thence in the same directions to the rear bars 13 to which they are connected by bolts 16 or other suitable means such as rivets, welding or the like. The front portions of the bars 14 support spaced vamp bars 17 fixed at their endsto the bars 14 and just behind these bars 17 a floor 18 is supported on and se-" cured to the bars 14. Side-plates 19 are located in the angle between one of the struts 12 and the arch bar 14 associated therewith. Each sideplate 19 has its upper edge fixed to the arch bar and its front edge fixed to the strut. Guide holes 20 are formed in the side-plates to slidingly receive horizontal platform-support bars 21 provided at their outer ends with legs 22 having feet 23 adapted to rest on the same floor or other surface as the members of the jack proper. A steel plate connects these feet to add rigidity. A platform 24 is fixed on the outer. portions of the bars 21.

The assembly consisting of platform-support bars 21, legs 22, feet 23 and side-platform 24 is one embodiment of what I term side-platform assembly.

Fixed in the upper ends of the bars 13, which project above the plane of the floor 18, is a shaft 25 which tiltably supports a wheel-stop plate 26 mounted on the shaft by means of strap bearings 27. A double-armed limit-stop 28 is fixed centrally on the shaft 25 so as to limit the tilting movement of the plate 26.

The assembly consisting of shaft 25, stop-plate 26, strap bearings 27 and limit-stop 28 is one embodiment of what I term self-adjusting wheelstop. The self-adjusting wheel-stop operates as follows: When a vehicle wheel comes in contact with the stop-plate 26, the stop-plate adjusts itself by tilting so that the maximum area of the tread of the tire of the wheel rests or presses against the flat surface of the stop-plate. While a stationary stop-plate could be fixed in the position that would result in the maximum area of the stop-plate being rested or pressed against by tires of any one diameter-size, tires of a different diameter-size would rest or press against the upper'part of the stop-plate more than the lower part, or vice versa, and be somewhat pinched.

A floor-frame 29 is pivotally connected to the forward ends of the bars 10 to lie flat on the floor or other surface in position for use, but it can be folded up to rest on the ramp portion of the main frame. Claims on this are in my applications for patents, Serial No. 487, 018, filed October 7, 1930, and Serial No. 500,228, filed December 5, 1930.

In use the jack is placed in position aligned with a vehicle wheel it is intended to raise. The

runs on the floor-frame 29, up the ramp portion and down the floor 18 until it comes in contact with the stop-plate 26 which then automatically tilts to the correct position, as previously explained, and supports the wheel against further movement in that direction. The inclination of the floor 18 normally prevents movement of the wheel away from the stop-plate until the vehicle is purposely moved in that direction. The inclination of the floor 18 is claimed as my invention in my application for patent, Serial No. 500,228, filed December 5, 1930.

When it is desired to raise than its position when a wheel, of the vehicle stands on the floor 18, to change a tire, remove a wheel, or for some other purpose, the sideplatform assembly is attached to the jack by placing it, feet down, alongside the jack and sliding the platform-support bars 21 through the holes 20 of side-plates 19 until platforma l is in a proper position to serve as a base for, say, a handoperated jack; then the hand-operated jack is positioned on the platform 24% and operated to raise the vehicle. 7 I

There have thus been provided simple and efficient embodiments of the features of my invention. 7

It is obvious that various changes may be made in the form and construction of these embodiments of the features of my invention without departing from the spirit and scope of my invention. I therefore desire to include, invention, all forms and constructions which properly come within the scope claimed.

Having thus described the invention, what is claimed as new is: V

1. In a jack of the kind described including a pair of parallel side frames each consisting of bottom bar, a rear end bar extending upwardly forwardly from the rear end of the bottom bar and an arch bar having its forward portion extending upwardly and rearwardly from the forward end of the bottom bar and its rear portion extending downwardly and rearwardly from the rear of its forward portion and secured to the rear end bar, ramp bars carried by the forward portions of the arch bars, a floor supported on the rear portions of the arch bars, struts each connecting an arch bar and bottom bar intermediate their ends, a shaft fixedly sup-- ported by the upper ends of the rear end bars, a stop plate tiltably mounted on the shaft, a limit stop fixed to the shaft to limit tilting of the plate, and cross bars connecting the bottom bars.

2. In a jack of the kind described including a pair of parallel side frames each consisting of a bottom bar, a rear end bar extending upwardly and forwardly from the rear end of the bottom bar and an arch bar having its forward portion extending upwardly and rearwardly from the forward end of the bottom bar and its rear portion extending downwardly and rearwardly from the rear of its forward portion and secured to the rear end bar, ramp bars carried by the forward the vehicle higher.

pair of parallel side frames each consisting of a bottom bar, a rear end bar extending upwardly and forwardly from the rear end of the bottom bar and an arch bar having its forward portion extending upwardly and rearwardly from the forward end of the bottom bar and its rear portion extending downwardly and rearwardly from the rear of its forward portion and secured to the rear end bar, ramp bars carried by the forward portions of the arch bars, a floor supported on the rear portions of the arch bars, and a stopplate tiltably mounted at the rear of the jack.

4. In a jack of the kind described including a pair of parallel side frames each consisting of a bottom. bar, a rear end bar extending upwardly and forwardly from the rear end of the bottom bar and an arch bar having its forward portion extending upwardly and rearwardly from the forward end of the bottom bar and its rear portion extending downwardly and rearwardly from the rear of its forward portion and secured to the rear end bar, ramp bars carried by the forward portions of the arch bars, a floor supported on the rear portions of the arch bars, and a wheelstop plate movably attached to a wheel-stop which is attached to the rear of the jack.

5. A vehicle jack comprising a body having an upwardly and rearwardly extending face and an elevated face and a wheel-stop plate pivotally mounted at the rear of said body, said jack being adapted to have a vehicle wheel moved up said upwardly and rearwardly extending face and rearwardly on said elevated face and against said wheel-stop plate, said wheel-stop plate being adapted to adjust itself to the tread of said wheel by turning on its pivot when said wheel comes in contact with said wheel-stop plate.

6. A vehicle jack as set forth in claim 5, with the addition of means for limiting the pivotal movement of the wheel-stop plate of said jack.

'7. A vehicleijack comprising a body, an incline extending to the top of said body, and a wheelstop plate pivotally mounted at the rear of said body, said jack being adapted to have a vehicle wheel moved up said incline and on to the top of said body and against said wheel-stop plate, said wheel-stop plate being adapted to adjust itself to the tread of said wheel by turning on its pivot when said wheel comes in contact with said wheel-stop plate.

8. A vehicle jack as set forth in claim 7, with the addition of means for limiting the pivotal movement of the wheel-stop plate of said jack.

' MARSHALL K. Mccosn.

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