Патент USA US2412734код для вставки
Dec. 17, ‘1.946. G. ILIFFE 2,412,134 PISTON RING Fil'ed July 10, 1945 INVENTOA’I" G. ILIF'F'E, $az:- Qunm C1222” 12,03 ' Patented Dec. 17, 1946 2,412,734 UNITED STATES ATENT OFFICE 2,412,734 PISTON RING George Ilii‘fe, Llandaif, Cardiff, Wales Application July 10, 1945, Serial No. 604,227 In Great Britain July 19, 1944 1 1 Claim. (Q1. 309-47) This invention comprises improvements in or relating to piston rings, piston valve rings and the like of the type in which the ends of the pis ton ring are adapted to form a joint with a sepa rate segment disposed in the piston ring groove in the piston. » In the beiorementioned type of piston ring, when the piston has been withdrawn from the 2 I The segmental member I I has a hole I3 formed therein which ?ts over the bar I2 to form a float— ing ?t thereon, which permits the segmental member I I having horizontal and vertical move ment in the groove of the piston and moving into contact with the cylinder wall to make the neces sary joint therewith. The tenons 8 of the piston ring are adapted. to ?t into slots I9 in the segmental member II. 10 At the ends of the piston ring 'I and under the tenons 8 are formed steps I4, into which are adapted to ?t the projections I5 formed on the The object of the present invention is to over segmental member I I, which arrangement pro come the beforementioned defect, in that the ends vides an abutment against which the recesses I4 of the piston ring willbe retained in the segment, in the piston ring abut, whilst the portions I‘! of when the piston is removed, but at the same time the piston ring fit into the slots I8 of the seg the joint formed by the ends of the ring and the mental member I I, thus providing means for re-‘ segment will be e?'icient and freedom of move taining the segmental member I I', which is freely ment will be permitted to the ends of the ring in mounted on the bar I2 in position in the ends of the segment. 20 the piston ring ‘I, in the event of the piston ring Referring to the drawing: being withdrawn from the cylinder. Figure 1 is a plan of a piston ring and seg In the modi?cation of the segmental member mental member, according to this invention. I I as shown at Figure 3 of the drawing, a slot I6 Figure 2 is a perspective view of the piston ring is provided for accommodating the bar I2. ends and the segmental member, and I claim: Figure 3 is a perspective view of a modi?ed Improvements in piston rings, comprising in form of segmental member. combination a segmental member which is adapt In carrying the present invention into practice ed to be removably mounted in a piston ring as shown upon the accompanying drawing, the groove, an inwardly projecting recess on each piston ring ‘I is formed at its ends with tenons 8, side thereof near its base, vertically disposed slots whilst the parts of the piston‘ring ‘I at the two positioned on each side of said member extending sides of the tenons 8 are cut away to form re from the top of said member into the inwardly cesses 9, the inner ends of said recesses 9 being projecting recesses, a piston ring formed at each formed to a radius Ill. The two ends of the piston ring ‘I make joint ., end_on the underside with a cut away portion, and a projecting portion having a tenon on the with the segmental member I I which is positioned top of each portion which are adapted to ?t into in the groove of the piston and is located in posi and be complementary with the segmental mem tion by means of the bar I 2 which is positioned in ber, to provide means for preventing the disen an aperture in the bottom of the piston ring gagement of the ring from the segmental member. groove. cylinder, the ends of the piston rings disengage the segment, thus necessitating the replacement of the ends into the segment, before the piston can be replaced in the cylinder. 40 GEORGE ILIFFE.