US664861A - Street-cleaning roller. - Google Patents

Description

No. 664,861. I Patented lan..I,-l90l. A. HENTSCHEL.

STREET CLEANING ROLLER.

(Application filed Mar. 12. 1900.)

(H0 Model.)

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Urren STATES PATENT OFFICE.

AUGUSTIN HENTSOHEL, OF BERLIN, GERMANY.

STREET-CLEANING RO LLER.

SPECIFICATION forming part of Letters Patent No. 664,861, dated January 1, 1901.

Application filed March 12, 1900- Serial No. 8,35%. (N0 model.

To (all whont it may concern:

Be it known that I, AUGUSTIN HENTSOHEL, manufacturer, a subject of the King of Prussia, Emperor of Germany, and a resident of Berlin, Germany, have invented certain new and useful Improvements in Street-Cleaning Rollers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyingdrawings, and to letters of reference marked thereon, which form a part of this specification.

My invention consists of a new and useful roller for street-cleaning carts or other similar devices and differs from the rollers heretofore used for such purposes through its particular formation and means for holding the rubber blades or sweeps.

The rollers at present employed, consisting of massive wooden cylinders with rubber blades fitted into screw-thread-like grooves cut in the surface of the cylinder, have serious disadvantages. First, these rollers are very heavy, requiring large counterweights in order to be easily raised and lowered, and, second, after short use they absorb so much moisture from the sprinkled streets that they far overbalance their counterweights, thus making them heavy to operate and adding considerable strain to the cart. In absorbing the water they warp or twist so that, thirdly, the rubber blades become loosened, thus adding further to the difficulty met with originally in fastening these blades in their grooves. The roller often becomes loose on the axle. In my invention, however, these difficulties are avoided, as will be hereinafter explained.

In the accompanying drawings, in which similar letters of reference refer throughout to similar parts, Figure 1 illustrates a side view of a roller with spiral-set blades embodying my invention. Fig. 2 is a front view of Fig. 1. Fig. 3 shows the roller with blades extending longitudinally.

In the construction of my invention I employ an axle a, upon which are securely mounted a plurality of disks 1), each of which has a toothed periphery 0. Three of such disks may be employed, as illustrated, orif a roller is desired of shorter length the middle one may be omitted.

The roller-body itself consists of a plurality of strips d, made of wood or any other desirable material which can be easily made watertight and be of light weight. These strips are arranged so as to snugly fit into the toothed disks aforesaid, while rubber bladesf wedge tightly between each of the said strips and extend outwardly a predetermined distance beyond the latter.

The several parts of the roller can be as= sembled as shown in Fig. l, where the different strips, with their adjacent blades, present a spiral or screw-threaded-like roller, or they may be assembled in the order shown in Fig. 3, where the disks are secured to the axle a, with their teeth 0 o registering, and the strips, with the blades, carried between the thus-registering teeth.

The strips cl and rubber blades f instead of being parallel with the roller shaft or spindle may be arranged spirally about the same. This can be done in two ways. The toothed disks 1) may, for instance, be secured to the axle or shaft a, so that the spaces between their teeth will be in linethat is to say, on lines parallel with said shaft--and the strips (1 and finserted into spaces between the teeth of the several disks out of line with one another, the pitch of the blades and strips depending, of course, upon the distance between the spaces in one end disk, in which the ends of the two strips d and the intermediate rubber blade f are seated, from the corresponding spaces in the intermediateand opposite end disks 1), as will be readily understood, or this may be effected by fastening all of the said strips and blades into position in the form shown in Fig. 3, fastening one end disk tightly to the axle and then giving a halfturn to the other end disks before fastening the latter. In either case the strips wedged between the teeth 0 and the blades f wedged between the said strips are tightly held in position, the compactness of which is increased by giving them a spiral-like twist.

The strips of wood (I are or may be waterproofed by any well-known process in order to prevent absorption of moisture and consequent increase in weight, as well as warping and the difficulties arising therefrom. It is 2. A new and useful roller for street-cleaning carts having an axle,toothed disks mounted thereon, strips extending from disk to disk and fastened between the teeth thereof, and rubber blades adapted to be firmly held in position between and by said strips, substantially as described.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.

AUGUSTIN HENTSOHEL.

Witnesses:

WOLDEMAR HAUPT, MAS. C. STAEHLER.

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