US2534029A - Internal-combustion engine ported sealing-ring positioning means - Google Patents

Description

W. KASTEN INTERNAL-COMBUSTION E INE P0 D SEALING-RING PUSITI NG ME S Filed Feb. 18, 1948 Dec. l2, 1950 JNVENzoR. Mmmm Patented Dec. 12, i 1950 INTERNALFGOMBUSTION ENGINE PQR'EED SEALING-RING POSITIONING MEANS Walter Kasten, Franklin, Mich., assigner `toSkinner Motors, Inc. (Delaware), Detroit, Mich., a

corporation cf Delaware Application February 18, 1948, Serial No. 9,184

(Cl. 12S- 75) 1 Claim. 1 The current invention relates to means for locking the known type of ported sealing-rings used in the well-known slide-valve type of internalcombustion motors employing a pair of transversely curved reciprocatory inlet and discharge valves sliding longitudinally between inner and outer cylinders of the motor.

Heretofore, several different devices have been used and suggested for this purpose but all of them have embodied some undesirable :characteristics or defects, one of which has been the slotting of the inner surface of the cylinder in which the sealing-ring is mounted.

The purpose of the present invention is to pro vide a suitable structure which will avoid the necessity for such slotting, which is efficient in service, which consists of few parts easily manufactured and at relatively small cost, which will have comparatively long life and which is unlikely to -be injured or damaged in the performance of its usual services.

The manner of attainment of these and other desirable aims and objects will be understood from a consideration of the structure and mode of operation of a present preferred embodiment of the invention in physical form illustrated in the accompanying drawing, constituting part of this specification, and in the views of which drawing like numerals have been employed t desig nate the same elements or parts, this structure being described in detail hereinafter.

In this drawing, in which several parts of the engine are not illustrated because not required to comprehend the current invention- Figure 1 is a section through the motor longitudinally of one cylinder on line I-I of Figure 2;

Figure 2 is a cross-section on line 2 2 of Figure 1 with the ported sealing-ring in operative locked position; and

Figure 3 is a partial section similar to that portrayed in Figure 2 showing the sealing-ring being introduced into place in the cylinder.

Referring to such drawing, it will be noted that the suitably cooled engine block II has the usual outer cylinder formed with an inlet or admission port I2 and an exhaust or discharge port I3, such outer cylinder housing the usual, appropriately supported, inner cylinder I4 bearing on its top the customary, resilient, longitudinally split, ported sealing-ring I5 with its normally overlapping lends I8, I9 bearing on one another, as shown in 4Figure 2.

It will, of course, be understood that the pair of ordinary, ported, semi-circular, inlet and exhaust valves 3l and 32 are reciprocated between the two cylinders by means not illustrated.

This sealing-ring I5, as will be readily comprehended, must be held in position against turning angularly on its axis to maintain its duplex in1et-ports I6, I6 in registration with its companion cylinder inlet-port I2 and its single discharge-port Il in alignment with the cylinder exhaust-port I3.

Secured in any approved manner, as by screwing it into a threaded hole in the sealing-ring, is an outstanding, cylindrical stud 2I normally occupying the otherwise open, inner end portion of a cylindrical passage 22 drilled through the side-wall of the cylinder II in register with the ring I5, the outer end of such passage 22 being closed by a screw 23 or by any other suitable means. Inasmuch as passage 22 is in a side wall of the cylinder II it is in an outside wall of the engine block, and the outer end of the passage opens eXteriorly of the block where it is readily accessible for insertion of a tool such as a screw driver or the like that can be used to push the stud 2| out of the passage to disengage the rin-g I 5 from the cylinder when it is desired to remove the ring from the cylinder.

To mount sealing-ring I5 in place in cylinder II the end of the ring nearest the stud 2|, that is the end having the inner overlapped portion I9, is pressed or forced inwardly out of place, as presented in Figure 3, to bring the stud 2l into register with the cavity 22 and with the long gap between the adjacent edges of the two valves, the ring being then permitted to expand normally and in so doing inserting the stud 2 I through the valve gap into the inner end of cavity 22, whereupon the ports of the sealing-ring register and are maintained in such relation with the corresponding cylinder-ports, as depicted in Figure 2.

Whereas, certain details of structure have been illustrated and described in this application, those acquainted with this art will readily understand that reasonable modifications therein may be resorted to without departure from the heart and essence of the invention and without the loss or sacrifice of any of its material benets and advantages.

I claim:

In a slide-valve internal-combustion engine including an engine block having a cylinder formed with inlet and exhaust ports, a sealing ring in and spaced from the wall of the cylinder, said ring having split inner and outer overlapping ends and openings in register with said inlet and exhaust ports, a pair of reciprocable slide valves interposed between the wall of the cylinder and said sealing ring for controlling said inlet and exhaust ports, a stud on the ring adjacent the inner overlapping end thereof for preventing the ring fromY turning angularly in the cylinder, the improvement comprising a through passage in an outside wall of the engine block extending from the cylinder between adjacent longitudinal edges of the slide valves and receiving said stud, and a removable plug in and sealing the outer end of the passage, whereby said stud interengages with the passage to hold the ring angularly position within the cylinder and whereby removal of the plug permits ready access to be had to the stud from exteriorly of the block to disengage the overlapping ends of the ring for removal thereof from the cylinder.

WAL'IER KASTEN.

REFERENCES CITED UNITED STATES PATENTS Number Name Date 1,456,708 Osborn May 29, 1923 1,800,479 Skinner 1 Apr. 14, 1931 1,830,137 Skinner Nov. 3, 1931 1,871,250 Walrath Aug. 9, 1932 1,872,516 Skinner Aug. 16, 1932

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