US882572A

US882572A - Piston.

Info

Publication number: US882572A
Application number: US38486707A
Authority: US
Inventors: Karl Matheus; Edward Thomas Hendee
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-07-22
Filing date: 1907-07-22
Publication date: 1908-03-24
Anticipated expiration: 1925-03-24

Description

PATENTED MAR. 24, 1908.

K. MATHEUS & E. T. HENDEE.

PISTON. APPLICATION FILED JULY 22 2 SHEETS-SHEET 1.

WITNESSES INVENTORS @IWJWM iJ/zawdf Vma No. 882,572. PATENTED MAR. 24, 1908. K. MATHEUS & E. T. HENDEE.

PISTON. APPLICATION FILED JULY 22. 1907.

2 SHEETS-SHEET 2.

mvm'rores JM @Z/Mw awmiJT/f m 7 3g? WITNESSES vide a very cheap and simple construction inafter described in the f piston embodying my invention.

an end elevation thereof.

the wearing surface thereof surface adapted to be UNITED sTAtrns PATENT OFFICE.

KARL MATHEUS AND EDWARD THOMAS HENDEE, OF (.HICAGO, ILLINOIS.

PISTON.

Application filed July 22,

To all whom it may concern:

Be it known that we, KARL MATHEUs and EDWARD THOMAS HENDEE, both citizens of the United States, and residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Pistons, of which the following is a complete specification.

This invention relates to improvements in pistons and more articularly to a piston adapted to change tlie position of its wearing surface with respect to the cylinder.

Heretofore reciprocating pistons have been so constructed that any given point on travels in a straight line longitudinally of the cylinder and consequently all of its wear atthat point is along that line. i

The object of this invention is to provide a piston in which the wearing surface thereof changes its position with respect to the cylinder, or in other words, to provide a piston in which any given point on its wearing surface trave s in an irregular line longitudi- 1nally of the cylinder instead of in a straight It is a further provide a piston object of the invention to having a revoluble wearing revolved by the pressure of, the motive fluid during its operation.

It is also an object of the invention to proadapted to greatly lengthen the life the cylinder and the iston.

he invention consists of the matters herespecification and out and defined in the of both more fully pointed appended claims.

11 the drawings: Figure 1 is a view partly in section and partly in side elevation of a Fig. 2 is Fig. 3 is a section of the following ring. Fig. 4 is an outer face view of the same. Fi 5 is a side elevation of one of the rollers. Fig. 6 is a fragmentary section of the bull rin Fig. 7 is a fragmentary end view thereof? Fig. 8 is a fragmentary section of the spider. Fig. 9 is a fragmentary end view of the piston with the piston rod removed.

s shown in said drawings: 1 indicates the tapered end of a piston rod of a reciprocating I piston, and rigidliy engaged thereon y means of a nut 1 is a isk 2 of any preferred construction and material, preferably of cast metal, but which as shown is cored to form a Specification of Letters Patent.

1907. Serial No. 384,867.

Patented March 24, 1908.

spider and is of less diameter than the diameter of the cylinder in which it is to be used. At one end of said spider is provided a peripheral flange 2, and at'the other end is a peripheral' groove or recess providing a shoulder 3 which is screw threaded, and a shoulder 4, which is provided in its periphery with a plurality of recesses 4. A roller 5 is journaled in each of said recesses upon a shaft 5, engaged in the walls of the recess, and each of said rollers projects sli htly beyond the periphery of the shoul er 4, as shown more clearly in Figs. 1 and 8.

Having threaded engagement on the shoulder 3 is a locking ring 6 which is adapted to be screwed in against the shoulder 4 and locked in place by a tap screw 6 having threaded engagement between the shoulder 3 and said ring, as shown in Figs. 1 and 2. Said ring 6 is provided with a peripheral flange 7, corresponding with the flange 2 of the spider and is also provided with a lurality of peripheral recesses 7, correspon ing with the recesses 4 in the shoulder 4. J ournaled in said recesses 7 on shafts 8 are the rollers 8 which also project slightly beyond the eripher of the ring.

W ithin t e seat formed between the flanges 2 and 7, and bearing u on the

rollers

5 and 8, is the ring 9, which have termed the bull ring and which fits closely between said flanges and is providedwith laterally projecting flanges 9, which project over the anges 2 and 7. Said ring .9 is provided in its outer surface with grooves in which are seated the packing-rings 10 of any desired construction, which are hel in lace by tap screws 10, as shown in Fig. 1. 11 one side of said bull ring is provided a plurality of recesses or ports 11 which, as shown more clearly in dotted lines in Fig. 1, have their end walls inclining towards each other and one of which is more abrupt than the other, so that steam exerts greater force against it and causes the ring to rotate.

The operation is as follows: In assembling the device the bull rin 9 is inserted over the shoulder 4 onto the fFange '2 and then the lockin ring is screwed in place by engaging any suitable instrument in the holes 12 in the outer face thereof. When said ring has been inserted to its limit the tap screw 6 is inserted in its aperture and the ring is held thereb firmly in position. Inasmuch as the bull ring engages the rollers it is obvious referably of soft metal, and

impulse of the piston.

that it is free to rotate thereon, thereby providing a rotative wearing surface for the piston. When steam gas, air, liquid or any other pressure is admitted to the cylinder it enters the ports or recesses 1 1 in the bull ring and owing to their form causes the ring to rotate slightly in the cylinder during each Obviously with a iston whose wearing surface is continuously shifting its line of travel with respect to the cylinder, the wear will be very evenly distributed and obviously struction maybe varied without departing from the principles of my invention.

We claim as our invention: 1. Ina device of the class described the combination with a disk of means affording a rotative wearing surface on its periphery and means adapting said surface to be ro -p tated by fluid pressure.

2. In a device of the class described the combination with a disk of a peripheral ring rotatively engaged thereon and means for rotating the same during the operation-of the piston.

3. In a reciprocating piston, a bull ring providing the wearing surface therefor and roller bearings for said ring.

4. In a device of the class described the combination with a spider of an automatically rotating ring thereon and means for securing said ring in lace. the class described the combination with a spider of roller bearings thereon and a ring mounted on said bearings and affording a wearing surface.

6. In a device of'the class described the combination with, a disk of a peripheral ring fitting thereon, anti-friction bearin s between said disk and ring and means %or securing said ring in osition.

7. n a device 0 the class described the combination with a piston rod of a spider thereon, a rotative ring on the periphery'of said spider, a locking rin adapted to be engaged on the spider an .hold the rotative ring in place and anti-friction bearings for said rotative ring. J f

8. In'a device of the class described the combination with a. spider of roller bearings on its periphery, a locking rin adapted to be engage on said spider, ro ler bearings thereon in alinement with the bearings on many details of con combination with a spider of a rotative ring subscribed our names in witnesses' seams the spider and a ring rotatively engaged on r said bearin s.

. 9. In a device of the class described the combination with a spider having a peripheral .flange thereon, of a locking rin hav-- ing a peripheral flange thereon, antiriction bearings on said spider and ring between said flanges and a ring rotatively engaged on said bearings.

10. n a piston, the combination with a disk having a peripheral race thereon, of antifliction bearings in said race a ring mounted on said bearings and having recesses in one side thereof, and packing rings in the circumference of said rlng.

11. In a device of the class described the carried on its cperiphery and having steam orts in one si e thereof.

12. In a device of the class described the combination with a piston head, having a peripheral seat therein, of anti-friction bearin s in said seat anda bull ring mounted on said bearings and adapted to revolve during the operation of the piston.

13'. The combination with a iston head having a flange and a plurality o? recesses at its periphery, of roller bearings journaled in said recesses, a locking ring adapted for threaded engagement with said piston head and provided with a flange and recesses at its periphery, roller bearings in the recesses of said ring, and a bull ring mounted on said roller bearings between said flanges.

14. In a'device' ofthe classdescribed the combination with a spider roviding a piston head, of a locking ring having threaded engagement with said spider, means for locking said rin in lace, roller bearings in the periphery o sai ring and spider, and a bull ring mounted thereon and provided in its side with a plurality of abutment recesses in which fluid pressure acts to rotate the bull we have hereunto rin I n testimonywhereof the presence of two KARL MATHEUS. EDWARD THOMAS Witnesses: I JosEPH SCHLENKEL, CARL HAERTING.

HENDEE.