US1622225A - Engine - Google Patents

Description

3 Sheets-Sheet 1 INVENToR ORN H. M. HARRIS ENGINE Filed Nov. 10, 1925 March 22 19,27-

March 22, 1927.

H. M. HARRl's ENGINE Filed Nov. 1o. 1925 3 Sheets-Sheet 2 INVENTOR 2 March 22, 1927. 1,622,225

H. M. HARRIS gr ENGINE Filed Nov. l0, 1925 V55 Sheets-Sheet 3 l 111.@ @eine "@1161 901111111141@ Patented Mar. 22, 132W HU HARRIS, QF CHATTANOQGAI, TENNESSEE, ASSXGNOR, TO LUCEY MANUFACTUR- ING CORIOIRJILLIO,IQ' OF TENNESSEE, 0F CHAT'I'.61H09GA..7 TENNESSEE, A COREORA- 'non 'OF mnnnnsennj ENLGINE.

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the 2711111501 fthe, '15.61.11524 .21111111.16 111161111021661 T1 ion of theneijeee lever nliated 1n he sever 1 YleWS e @he fem'vard tunning 39 which s connectedfW-th the yah? @einen 9i .the gi e simply swinging the reverse lever 32 to the left in Figure l so as to carry the support for the lower end of the radius link into the forward end of the slot in the reverse link l5. in that position the fulcrum for the eccentric rod will describe the other or reverse arc indicated in Figure l. Reversal may be effected without shutting olf steam as the lower end of the radius link passes first through a neutral position midlength of the slot where the movement imparted to the valve is insufficient to effect rotation of the engine in either direction so that the changeover from one direction to another is eected gradually and without jar. j j l The movements of the valve operating parts are relatively slow and of comparatively slight extent and as all these parts are `at a lowgravity center, the action is particularly quiet `and well balanced. The mechanism is particularly compact and close coupled because of the fact that the reach rod is forked to straddle the radius link and reverse `link andthe transmission link is forked to straddle all of these parts so that viewed from the side as in Figure 1, the lower ends of all these parts and including the lower end of the valve actuating bellcrank all stand in a common plane. All parts also are readily accessible, easily taken care of and if necessary, readily removed for repair purposes or the like.-

To enable close adjustment in setting the valve, the bolts 16 which secure the reverse link in place are shown as stay bolts against which impinge adjusting screws 45 extended inward from the ends of the link. The link is shown longitudinally slotted at 46 for the stay bolts, lock nuts are indicatedat .47 for securing the positioning screws in their finally adjusted relation and clamp nuts are indicated at 48 on the upper ends of the stay bolts for fixing the link in thoposition to which it has been shifted. j

The supporting of the radius link from below and the suspending of the transmission linkl from the rear end of the eccentric rod are particularly advantageous features, keeping down the height of the valve gear to below the'level of the cross head guides, with substantially all parts below the longitud-inal center of the engine, tending to steady and quiet the operation of the engine.

In view ofthe fact that the present invention may be adapted to engines for many different purposes and may be changed in its structure to meet various requirements, thespecification and claims are to be interpreted broadly, the terms employed being used in a descriptive rather than in a limiting sense, except possibly for such limitations as may be imposed by the state of the prior art. i

i, What-is claimed is: i i i 1.. A; Stationary "steam engine of the horizontal type comprising an engine bed, a cylinder mounted uponthe bed at one end, a crank shaft journaled at the opposite end of the bed, cross head guides upon the bed between the cylinder at one end 'and the crank shaft at theV opposite end, a valve actuating rockshaft journaled onthe bed below the cylinder and beneath the cross head guides, a valve actuating rocker arm projecting upwardly from said rock shaft and an operating arm projecting laterally from said rock shaft away from the cylinder, a reversing shaftjournaled on the bed plate infront of the rock shaft, a slotted reverse `link mounted on the bedand` between the rock shaft and reversing shaft with the concave side of the slot therein faced upwardly,` an auxiliary crank fixed von'tlie main crank, an auxiliary connecting rod engaged at one end with said auxiliary crank, a radius link having its lower end shiftably pivoted in the slot of the reverse link andcarrying at its upper end a fulcrum for the auxiliary connecting rod, a connecting link suspended from the auxiliary connecting rod and having its upper end pivoted to the end of said connecting rod at a point beyond the fulcrum of said rod and its lower end pivotally engaged with the laterally extending arm of the rock shaft, an upwardly projecting arm on the reverse shaft, a reach link extending from said upwardly projecting arm over .the reverse link and connected withl the shiftable pivotal support for the lower end of the radius link and an operating lever extending upwardly from said reverse shaft.

2. A steam engine of the horizontal type comprising engine bed, a cylinder mounted on the bed at one end, a ycrank shaft journaled'at the opposite end of the bed, cross head guides on thebedbetween the cylinder at one end and the crank shaft at the opposite end, a valve actuatingrock shaft j ournaled on the bed below the cylinder and cross head guides, a valve actuating rocker arm projecting upwardly from said rock shaft and an operating arm projecting laterally from said rock shaft away from the cylinder,` a reversing shaft journaled on the bed plate in front of they rocky shaft, f1. slotted reverse link mounted on thebed plate and between the rock shaft and reversing shaft with the concave side of the slot therein faced upwardly, an auxiliary crank fixed on the main crank, an auxiliary connecting rod engaged` at one end `with said auxiliary crank, a `radius ,i link having its lower end shiftably pivoted in the slot of the. reverse link and carrying at itsllpper'end a fulcrum for the auxiliary connecting rod, ,a connecting link Suspended from the auxiliary connecting rod and having its upper end pivotedto the end of said `connecting rod at a point beyond the fulerum" of said rod and its lower end pivotally engaged with the laterally extending arm of the rock shaft, the reverse link and the lower forked endsy an upwardly projecting arm on the reverse of both the radius link and reach link and shaft and a reach link extending `l'rom said the lower end of the connecting link being upwardly projecting arm and connected with Widely forked to span the reverse link and the shiftable pivotal support for the lower the forked ends of both the radius link and 15 end of the radius link, the lower end of reach link.

the radius link being forked to embrace the In Witness whereof, have hereunto set reverse link, the reach link being forked to my hand Jhis 3rd day of November, 1925. embrace the fork of the radius link, the ac- 10 tuating arm being Widely forked to receive HU M. HARRIS.

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