US861690A - Oscillating motor. - Google Patents

Description

ANolafsigo. l' PATBNTED JULY 30,1907.

f H. W. M. E. YosT.

OSCILLATING MOTOR. APLIOATION FILED Arn.ao.19oe.

2 SHEETS-SHEET 1.

F'I G ATT'ORNEY.

rrrrnn sfra'rns HENRY w. YOs'T AND JOSEPH E. Yos'r, `Oir- SPRINGFIELD, OHIO,

ASSIGNORS TO YOSfl` GEARLESS MOTOR COMPANY, OF SPRINGFIELD, OHIO, A ACOI?Alt'EhIERSFIIP.

Specification of Letters Patent.

Patentes July 30,1907.v

Application fusa sparso, 1906. saisi No. 314.385.

in Oscillating Motors, of which the following is. a. specification, reference being had therein to the accompanying drawings. This invention relates to oscillating motors, and more particularly to oscillating motors such as wat-er motors, adapted for use with a practically inelastic motor fluid. Our invention has for its object to provide a: simple, durable, inexpensive and eiiicieiit structure of this class, which will be compact and self contained.

To these ends our invention consists incertain novel features whiclrwe will now proceed to describe and will then particular-lypoint out inthe claims. In the accompanying drawings, Figure l is 'anelevation of a motor embodying our invention inlonelform';

Fig. 2 is a sectional view of the same, taken on the line o 'v of Fig. .l and looking in the direction oi the arrows; Fig. 5-is asectional view., takenon a plane corres lgunding ivith the line w w ofFig; 2 and looking in th irec- 'ftion of 4the arrows; Fig. 4 is a similar view,taken on a planecorresponding with the line x at of Fig. 2 and looking in the direction of the arrows; Fig. 5 is a sectional view, taken en the line y yoFig. 3 and looking inthe direction'of the arrows; and Fig. 6 is a sectional view,

taken on the line z z of Fig. 3 and looking in the direction of the arrows. 4

. In the said drawings, l represents an oscillating shaft, which may be the shaft of a washing machine, for use in connection with which our improved motor is especially adapted. This shaft passes through the motor cylinder, which comprises a cylinder body portieri 2 and heads 3 and 4. The cylinder body 2 is in the form of a plain annulus, and therefore may be readily constructed from asection of pipe or'tubing. The heads'B 'and 4 are provided with marginal flanges 5, which lit4 around the edges Of the body 2 so as to center the heads and body, and the heads are connected by bolts 6, passing through lugs 7 on the heads and providedlwith nuts 8, by means of which the heads may be drawn towards each other and held firmly against the `ends of the cylin- .der body 2. Each head has a stuling box for the passage of the shaft l, the samey comprising an internally threaded sleeve or collar 9, formed integrally with the head and surrounding a central aperture 'l0 in the head,-

through which aperture the shalt passes. This sleeve or collar forms a chamber to receive a packing ll, which is held in place and tightened n pon the shalt by the usual gland l2. rlho head 3 'has formed integrally therewith an inlet nozzle i3, threaded or otherwise adapted for connection with a source ol supply oi water under pressure, a passage or port 14 conducting the water to the interior of the cylinder. A similar exj Vhaust nozzle 15 is formed in one lpiece with the head 4,

and communicates with the interior of the cylinder through aport or passage 1G.

A portion of the interior oi the cylinder is divided.` Off' to form a valve chest comprising an iniet chamber 4cornmunicating with the port 14 and an outlet chamber communicating with the port l Toprovide a simple.'

and effective construction for this portionvofthe motor, we employ a casting comprising a diaphragm 17 which extends across the cylinder in the plane oi a`cliord ofthe circle of the cylinder section at right angles toits bisectig'ra'dius. This diaphragm is secured atfits ends to the cylinder body 2 by means .of screws 18, as shown in Figs. 3 and 4, its lateral margins tting against the`heads, `.While its central portion'is provided with an inwardly extending abutment 19, which lits against the shaft 1 an is provided with a recess containinga packing 20 to make a water-tight joint between said4 abutment and the shaft.

The diaphragm or partition la7 'is provided on its other or outer si( e with an itgml iiange 2l, arranged at right angles to the body of saiddiaphragm, 'extending thence outward soneto-tht ,against the cylinderbody 2, and dividing the s ace .h c Weenv the diaphragm 17 and saidcylinder bod )into aai inlet or pressure chambcr 22 and an outllgt lor exhaust Ichamber 23. The

portion of the diaphragm '17, which lies inward fromy the inlet chamber 22 is provided with two ports or expenings 24, arranged on opposite sides o the abutment'li), and in these 'ports fit and in cross section, of the inlet valves 'll`he valves 26 and 27 seats 28 to receive said valves.

are connected to thc vonds ol' a rocker arm or vibrating lever 29, which lever is centrally pivoted to a bearing 'stud 30 projecting outward ronrthc llangeor partition 2l, and preferably loi-mcd in one piece therewith, the lcvcr 29 boing 'provided with a central sleeve 31 which slips'over the bearing stud 30, so as to be readilyre- '-niovablotherefrom when thehcad 3 isrelnoved to give access to the interior ofthojnlct chamber 22. The connccl ion bctwccn the valves 2G and 27 and the ends of the lover 29 is effected by providing the lcvcr with.

slide the stenis'25y, crucilorrriA 2G and 27, the outer lace of the diaphragm .l7 being provided with valve the lover to rock relatively to the ss A t the diaphragm i7 is provided with exhaust ports 35, having valve seals lt at their inner ends to receive the exhaust valve?l 37 and 3S. which lie on the inner side of said diaphragm, and which have stems 3l), erucilorm in cross section, which tit and slide in the ports 35. The partition 2l is provided on this side also with a central bearing stud 40, on which [its a central bearingr sleeve 4l on a rocker arm or vihral ing7 lever 42, the ends oi which are connected to the exhaust valves 37 and 23S yin a manner similar to the connection ol the lever.2.) with the inlet valves 2U and 27. ln other words, the lever 42 is provided at its ends with inwardly directed open mouth slots 43, and the valve stems 39 are provided with redueed shanlrs fifi, loosely fitting said slots, and heads or enlargements 45 -to engage the lever. ln thiscase also it will be seen that the mouths of the slots 43 are inwardly directed, so that, by removing the cylinder head 4, the lever 42 may be drawn out hy simply moving it; in a direction parallel with the axis oi' the shaft l, without displacing the valves.

The shalt] is provided with an oseillating'piston 46, in the l'orm ol a radial blade secured to the shaft r, at its inner end and Iittingr between the cylinder heads, shaitland cylinder body 2. ln order to make Water-tight joints between the piston and Cylinder, there is secured to each side of said piston. a packing sheet'47, preferably constructed 'oi leather and of an area somewhat, lgreater than that ol' the piston, so that its margin 4S is tree and bent outward so as to be held against the cylinder walls by the pressure ol' the water. These packing;r sheets are held in position hy clamping plates 49, suitably secured to the body ol the piston on each side thereof and clamping the packing sheets against said body.

Each valve -has that end thereof which lies in the path ollthe piston 4G provided with a eoiled spring 50, seeured to said valve and so arranged as to be squarely struck by the piston and compressed thereby bciore the shitting ol the valves finally oeeurs4 'lhese springs are preferably secured to studs 5l, projecting inward from the valves or their stenis, and the springs are prei'- erably conical in i'orm or ol increasing radius toward their tree ends. l

The operation ol' the motor will be readily understood from the preceding7 descr-nation. Assuming that the parts are in the position shown, the water under pressure, enteringI the inlet, chamber through the inlet 'nozzle and port 14, is admitted to the interior of the working,r portion 52 ol the cylinder through the port 24 of the inlet valve 2li, the other inlet, `valve 27 being held to its 4seat by the pressure of the water against it so as to close the inlet portwhich it, controls. The pressure thus exerted on on'e side ol' the piston 46 moves the same in the direction ol' the arrows in Figs. 3 and 4, the water on the other side ol' the piston escaping through the port controlled by the open exhaust valve 37, the other exhaust valve 38 being heldelosed by the water pressure. Movement, ot' the piston inthis dire@ tion continues until it comes into contact with the springs 50 oi the yinlet valve 27 and exhaust valve 37. Movement ol' the former valve is resisted by the water pressme on its other side and movement of the latter valve is resistcd'by the Water pressure on the other exhaust, valve'SS, which, beingT connected with the valve 37 through. the lever 42, resists the closing oi thiy valve 37. The springs 50 are therefore compressed, while the valves 27 and 37 remain stationary andthe piston completes its stroke. The coi'npressien ot the springs continues until the piston comes into Contact with the studs 5l, and, by its engagement with them,

' will start the valves upon their shifting movement,

positively lil'ting from their seats the valves which are held there by the water pressure. As soon as these valves have heen thus started and relieved of the Water pressure. resistance, the springs act to shil't the valves the remainder oi' the way, the inlet `fvalve 27 opening and the exhaust valve'37 closing, ywhile the inlet 'valve 26 is closed and the exhaust valve S8 is opened through the medium ol' the connecting levers 2t) and 42. Water under pressure is thus admitted to the other side of the piston, which thereupon reverses its direction of travel and moves back tothe position shown in the ,lrawizgs, thereby again opening the inlet valve 2G and exhaust valve 37 and closing the inlet valve 27 and exhaust valve 3S, whereupon the same cycle ot operation is continued. It will be understood in this connection that the springs are always compressed to the same extent, to wit, to an extent just sutlicient to enahle the piston to come into Contact with the studs 5].. This prevents excessive compression of the springs, which would occur when the motor is carrying;r a heavy load il' the springs were compressed Sutheiently to overcome the pressure ol the water against the valves. Such excessive compression tends to rapidly crystalli/,e the springs and correspomlingly slierten their lives. 4 The construction' which we have devised makes the compression 0l the springs unil'orm under all loadsrand avoids excessive'compression, thereby increasing the life ol` the springs,

From. an examination of Fig. 5 of the drawings, it will he seen that the relative position of the inlet and outlet valves is such that the former will be struck and nnseated by the piston before the latter is struck and its shil'tingniovement `started. ln said ligure ol' the drawings the dil'tcrenee has been slightly exaggerated to make it apparent on the small scale necessarily employed, and it will he seen that the stud 5l ol' the inlet valve 2G extends somewhat further inward than the stud 5l. of the exhaust valve 38. The same is trueof the valves 27 and 37, the inlet valve stud extending somewhat in advance of the exhaust valve stud. It follows from thiseonstruction that the inlet valve starts to shift somewhat before lthe exhaust valve, the inlet valve leading somewhat in this movement. This allows v'ater under pressure to enter through the opening inlet valve somewhat before the exhaust valve starts, admitting water' under pressure on that side ol the piston, so that it will assist the spring on the outlet valve in moving the outlet valve quickly to its seat. v

'ihis arrangement also avoids the possibility of the outlet valve, leading in the sluiting movement, which leading might result, trom some variation in the resistance of the, springs and would he objectionable.

and described, for obvious modifications will occur to a person skilled in the art:

Having thus fully described my invention, what l claim as new and desire to secure by Letters Patent,

iszf valve casting located within the cylinder and forming inlet and exhaust chambers, each chamber having ports` opening into the main cylinder on opposite sides of the piston, valves controlling said ports and provided with springs arranged in the path of the piston, and rocker arms centrally pivoted in the respective valve chambers and connected to the corresponding valves to move them in opposite directions, substantially as described.

2, An oscillating motor comprising a shaft provided with an oscillatingy piston, a cylinder in which said pistony operates, a diaphragm extending chordwise across said cylinder and provided with valve openings and valves, a`

partition flange extending at right angles to said diaphragm and dividing the space between it and the cylinder body into inlet and exhaust chambers, bearing studs supported within said chambers, rocker arms pivotally mounted on said studs and provided at their inner end s with open mouth slots to engage ,the valves,

Il. An oscillating motor comprising a shaft provided with an oscillating piston, a cylinder in which said piston operates, said cylinder having an annular body and removable heads, a diaphragm extending chordwise across the cylinder body and provided with valve openings and valves, a partition flange extending at right angles to 1. An oscillating motor comprisingr a cylinder, an oscillating shaft provided with a piston traveling` therein, a

said diaphragm and dividing* the space between it and the cylinder body' into inlet and exhaust chambers, bearing studs extendingr outward from said partition flange into the chamber, and rocker arms constructed to removably slip over said bearing studs and provided at their ends with open-mouthed slots `to engage the valves, substantially as described.

'4. An oscillating motor comprising a shaft having an oscillating piston, a cylinder having an annular or tubular body and removable heads, an integral valve chamber casting comprising a diaphragm extending chordwise across the cylinder, an abutment extending transversely of said diaphragm on'one side thereof and' fitting against the shaft, a partition flange at right angles to said diaphragm and abutment on the other side of." said diaphragm, said partition ange extending to the body and forming inlet and exhaust chambers on opposite sides thereof, and bearing'studs extending 'outward from said partition ange across the valve chambers, said diaphragm being provided with valve openings lbetween the main body of the cylindevI and each valve chamber on opposite sides of the abutment, valves controlling saidvalve openings and provided with springs arranged in the path of the piston, and rocker arms having central sleeves to slip over the bearing studs and open-mouthed slots at their 'ends to engage the valves, substantially as described.

5. In an oscillatingr motor of the character described, a valve chamber, one side whereof is removable, in combination with two valves, each comprising a valve proper, a stem cruciform cross section, a reduced shank, and an enlarged head, and a rocker arm removably pivoted between the valves and having open-mouthed slots at its ends to loosely engage the Shanks of the valves, sub'stantially as described.

In testimony whereof, We aix our signatures in-pres ence of two witnesses.

' HENRY W. YOST. JOSEPH E. YOST.

l Witnesses z IRVINE MILLER, E. O. HAGAN.

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