DE312886C - - Google Patents

Description

GERMAN EMPIRE

ISSUED
ON JUNE 20, 1919

REICH S PATENT OFFICE

PATENT LETTERING

CLASS 63 e GROUP

HEINRICH SPITZNAS in BERLIN?

Patented in the German Empire on December 1, 1916.

LITZ.

The invention relates to resilient wheel tires for motor vehicles, bicycles and the like, in which in an ordinary barrel jacket made of suitable, 'pliable Fabric and of appropriate dimensions instead of the air hose that is otherwise used a known, the barrel jacket in the form of a closed beaded ring filling, tight coiled steel wire coil spring is inserted.

The object of the invention is that, for a full replacement of the pneumatic Tires, in which the tightening of the barrel jacket and its tight fit on the outer rim is achieved by pumping up the air hose, which is the coil spring bead surrounding barrel jacket the proper tightness and tight fit is given that .from the outside

ao a single point of the wheel one in the space between the bead ring and The clamping device built into the outer rim can be put into action in such a way that it presses evenly radially onto the entire inner surface of the helical spring bead ring, so that this is firmly against the barrel surface with its entire outer boundary surface presses and thereby tightens it, while at the same time the lateral hook beads of the barrel jacket firmly pressed into the two inwardly folded rims of the outer rim and to be held there.

The clamping device can be in the simplest way from two on the outer part of the Wheel rim be formed by sliding rings, which are provided with right-hand and left-hand threads Spindle shafts with each other - are in connection. On these spindle shafts, which are distributed at certain equal intervals on the circumference of the wheel, there are chain wheels and these are in engagement with an articulated chain, which in turn is attracted from the outside by an engine can be: This brings the two sliding rings closer together so that. she on the one hand with their inclined surfaces against the coil spring bead ring and through this, exert the desired pressure against the barrel jacket and on the other hand with the help of pins on both sides on clamping rings and by means of these on the hook bulges of the barrel jacket work.

Such a tensioning device is shown in the drawings, the same being installed in the space between the helical spring bead ring inserted in the barrel jacket and the outer rim that it can be removed again when the wheel is to be provided with the earlier pneumatic tires. 1 shows a section through the housing of the drive mechanism of the tensioning device with a partial side view, and in FIGS. 2, 3 and 4 different cross-sections according to AB, CD and EF of FIG. 1 are illustrated.

On the middle surface of the outer part a ^{1 of} the wheel rim is an iron support frame b, which can consist of individual segments, as a

• closed ring fastened by screws. On the two webs b ¹ and b ^{2 of} this support frame are the two slanted, horizontally displaceable sliding rings c ¹ and c ² , which are guided by connecting bolts d and held on their .Gleitunterlagen, the webs b ¹ and V- will.

Between the two webs b ¹ and l · ² . is ίο embedded in a circumferential groove in the footplate of the support frame b a link chain without end e , in which the chain wheels /, which are distributed at equal intervals on the wheel circumference, are here, for example, above the wheel spokes, engage. At these points, the webs b ¹ and b ^{2 of} the support frame b are interrupted, around the small sprocket shafts g, which are milled with the sprockets f from one piece and on both sides of the wheels equally .lang free, protrude and as screw spindles g ¹ und.g ^{2 are designed} with right-hand and left-hand threads to allow passage. Spindle nuts h ¹ and h ² run on these spindles , which in turn are firmly connected to the inwardly directed flanges of the sliding rings c ¹ and c ² by the tabs i ¹ and i ^z. .

On the outwardly protruding parts of the footplate of the support frame b there is also a clamping ring k ¹ and k ² of appropriate, for example circular, cross-section on each side. The two clamping rings can also be composed of individual ring segments.

Steel pins I ¹ , which are screwed into the flange of the sliding ring c ² at equal intervals, protrude freely through the flange of the sliding ring c ¹ and the support frame b _± and press against the clamping ring k ¹ , while steel pins I ² , which are the same in the corresponding intervals are screwed into the flange of the sliding ^v ring c ^1, freely through the flange of the sliding ring c ² and the support frame web b ² protrude and k ² press against the locking ring, if the two seal faces c ¹ and c ² are moved towards each other.

The ends of these pressure pins I ¹ and I ² extend into corresponding through bores which are located in the clamping rings k ¹ and k ² . The latter are loosely connected to the pressure pins I ¹ and I ² by screws or split pins that lead through slotted holes at the pin ends.

In order to compensate for any irregularities occurring on the hook beads or steel hooks of the barrel jacket m ¹ and m ^z and to avoid corners, short compression springs 0 are pushed over the pins between the clamping rings and a collar η on the pressure pins.

The housing p of the engine is at any point of the .Kraftwagenrades between two spokes in a through the wooden base part α ³ , the iron intermediate part α ² and the outer part a ^{1 of} the wheel rim-reaching slot - as a whole - inserted and with the rim screwed from the outside, and the engine can then be put into operation using a socket wrench. ',

By turning this wrench wrench to the right, which is attached to the screw head with which the drive shaft q ¹ ends on the front side, the drive gear r ¹ with its ratchet wheel. offset in rotation in the same sense. ' This rotation is transmitted by the idler gear r ^{2 , which runs loosely on the fixed shaft q 2} , to the working gear r ³ , which is also loosely running on the fixed shaft q ^s and which is firmly connected to the drive sprocket t and therefore takes it along.

Because the chain wheel t with the articulated chain otne end. e is in engagement from the lower side, the chain is pulled around the periphery of the wheel rim by the rotating drive sprocket t, and thus all the small chain wheels f are rotated. As a result, their screw spindle shafts g naturally also rotate with their right-hand and left-hand threads g ¹ and g ² , and the two sliding rings c ¹ and c ² are moved against one another by means of the spindle nuts h ¹ and h ^2. As a result, the helical spring bead ring slides up on the tapered outer surfaces of the sliding rings c ¹ and c ² and is evenly pressed outwards over the entire circumference of the wheel against the inner side of the barrel jacket i _O o, thereby tightening the latter.

At the same time, however, the clamping rings k ¹ and k ² are pressed by the mutual movement of the sliding rings c ¹ and c ² by means of the pressure pins I ¹ and I ² against the hook beads or. Steel hooks m ¹ and m ^{2 of} the barrel jacket and this firmly into the Crimping the outer rim is pressed, namely the left sliding ring c ¹ on the right clamping ring ' k ² , and the right sliding ring c ² on the left clamping ring k ¹ in the respective direction of movement of the sliding rings.

If the necessary tightness of the barrel jacket has been achieved, the motor vehicle wheel is operational, because the ratchet wheel.? with its' pawl u prevents the engine from running backwards. The screw v is used to secure the pawl u , which is inserted from the outside into the housing of the engine after the barrel jacket has been tightened.

If the barrel jacket is to be removed, the engine must be used to de-tighten it

be set in reverse rotation. For this purpose, first remove the locking screw ν from the housing p of the engine and then remove the hood nut w . If you now press the now exposed pushbutton χ, from which you have previously removed the locking pin y , this pushbutton in turn presses on the extension w ^{1 that is directed downwards}

ίο ratchet pawl u, and the pawl, which is otherwise held in permanent engagement with the ratchet wheel s by the spring ζ , is moved upwards. This releases the ratchet wheel j. and now enables a backward rotation of the engine;

Claims (2)

Patent Claims: ■ t i. Wheel tires for motor vehicles, Fahrao wheels and the like, in which a steel wire coil spring is inserted into an ordinary barrel casing, characterized in that the barrel casing is given the proper tightness and firm fit by a single point on the outside of the wheel can be placed in the space between the bead ring and the outer rim built jig so in activity that they uniformly radially to the entire inner surface of the coil spring bead ring presses, wherein, at the same time the lateral Hakenwulste of the running casing fixed in the two inwardly umgelgten rims of the outer rim be pressed. , 2. Embodiment of the tensioning device used in the resilient wheel tire according to claim 1, characterized in that two ^{rings (c 1} and c ^{2 ) sliding on the outer part (α 1} ) of the wheel rim are distributed over the wheel circumference at certain equal intervals and with right and left-hand threaded spindle shafts (g) are connected to one another, on which chain wheels (/) sit, which come into engagement with an articulated chain (<?), which in turn is driven by a drive mechanism (<jf r ¹ s, q ² r ² and q ^s r ^s t) can be attracted from the outside, whereby the two sliding rings (c ¹ and c ² ) are brought closer to each other, so that they on the one hand with their inclined surfaces against the helical spring bead ring the desired pressure. exercise and on the other hand, with the help of pins (Z ¹ and P) on both sides, act on clamping rings (fe ¹ and k ² ) and by means of these on the hook beads (w ¹ and m ² ) of the barrel jacket. ' 1 sheet of drawings.