US1670667A - Motor - Google Patents

Description

May 22, 1926. 1,670,667

J. R. OlSHEl ET AL MOTOR Filed Ma, 1925 2 Sheets-Sheet 1 May 22. 1928. 1,670,667

J. R. OISHEI ET AL MOTOR Filed May 5, 1923 2 Sheets-Sheet 2 L-Wr Patented May 22, 1928.

UNITED STATES PATENT OFFICE.

JOHN l. OISHEI, OF BUFFALO, AND ERWIN C. HORTON. OF HAMBURG, NIW YORK, A8- SIGNOBS, BY DIREOT AND MESNE ASSIGNMENTS. TO TRIGO PRODUCTS CORPORA- TION', OF BUFFALO, NEW YORK.

KOTOR.

applicativa mea nay a, 192s. semi nu. escasa.

This invention relates to motors and more particularly to valve operating mechanism or motors.

In motors of the fluid pressure type, and in particular motors operated by suction from the intake manifo d of an automobile engine, which suction varies and is not always present in any substantially large degree, it has been found necessary to provide valve operating or.valve changing mechanism which ma be operated by a very small expenditure o energy and which will be quick and accurate in operation.

In motors of the type illustrated in the drawings herewith, which motors have been connected to the intake manifolds of automobile en ines to operate windshield wipers or other evices, and embodying, generally, a. fluid pressure chamber havin f a vane or swinging o @rating member wor ing therein and which is ada )led to be swung by reason of pressures on the sides of the piston, there have hren )rovided valves for automatically changing tie direction of movement of the pistou by connecting first one side of the vane with the source of suction, and at the saine time permitting atmospheric air to enter to the other side of the vane, whereupon, by reason of the difference in ressures the vane is swung; the valves are t en reversed and suction is placed upon the other side of the vane and atmospheric air admitted to the reverse. side. In order to prevent the eqnalizing of pressure upon both sides of the vane, which would stop the operation of the motor, and to compensate for wear and to insure a quick and accurate seating or closin of the valves it is desirable that the va ves be controlled by some resilient or yieldin means and further, that the movement o the valve or valves from one position to another be made promptly and accurately at the end of the piston stroke. Heretofore, with these re uiremeiits in mind, valve actuating means ave been provided embodying a spring-controlled valveactuat-ing member or snap-over device which when moved toward the end of the vane stroke, is intended to throw or snap the valves to their next sition. Generally these devices have relie upon the shifting of an actuating spring Erst to one side and then to the opposite side of the pivotal point ot' the valve actuating kicker to obtain this snap action. It has been found in practice that if the spring loses its elasticity or if for any reason the valves or kicker stick or are diilicult lo move, reversal of the valves is not accomplished as contemplated. Furtlicr it has been found that positive, unyielding valve-actuatin r members are undesirable for the reason tiat they will not adjust themselves to compensate for inaccu` racies caused by wear of the valves or incidental to manufacture or assembling and are liable to permit the pressures on opposite sides of tie piston to equalize and stop the motor. Y

The objects of the present invention are to provide valve-actuating devices which operate with a quick or snap action to promptly reverse the valves at the proper time, which yieldingly hold thc valves iii proper positions and at the saine time insure a positive movement of the valves to the desired positions; also to provide a valve-operating device of simple form and which is relatively inexpensive to manufacture and assemble,

consisting of few parts, and which will.'

i uickly and positively perform its functions.

further ob'ects are to provide im )rovemeiits in va ves and valve-actuating devices for motors in the other respects hereinafter set forth and claimed.

In the accompanying drawings:

Fi 1 is a sectional elevation of a motor eiiiho ying the present invention.

Fig. 2 is a sectional elevation thereof showing the valves and valve-actuating means iii a different position from that shown in Fig. 1.

Fig. 3 is a section on line 33, Fi 1.

Fi 4 is a section on line 4 4, Fig. 2, on an en arged scale.

Fig. 5 is a sectional elevation of a portion of the motor, illustrating the valve-operatini means in diierent positions.

`ig. 6 is a section on line G-6, Fig. 3, but

on an enlarged scale.

Fig. T is a section oii line 77, Fig. 3, but on an enlarged scale.

'Fig'. 8 is a section on line 8 8, Fig` 3, but on an enlarged scale.

In the drawings, generally designates the iiiotor having a chamber B in which is mounted the vane t on a shaft D. The motor is provided with suitable poi-ts for the admission of the operation` fluid. In thc type of motor disclosed, E designates a suction line which is connected to a suitable lit] source of suction which is in communication with a passage F. The passage F is 1n' communication with passages G and H which in turn communicate with ports at opposite sides of the chamber. I and K designate ports at the opposite sides of the chamber which, in the case of the type of motor disclosed in the drawings, alternately place the chamber on the opfposite sides of' the vane under a suction in uence or supply atmospheric air thereto. These parts may be in any suitable position and may be controlled by any suitable valve or valves. In the form of motor shown, this is accomplished, for example, by means of a valve L illustrated in Fig. 4, the valve L shown being chosen merely for illustrative purposes. In the position shown in Fig. 4, the valve L is closing the suction passage to the side of the chamber which it feeds and atmospheric air is being admitted to that side of the chamber past the seat at the lower portion ofthe valve and through the port.

The present invention includes means for automatically operating the valves to reverse the swing of the vane. For this purpose, the valve or valves are provided with a .suitable operating means. In the embodiment shown, an operating member 10 is provided which has a pair of arms 1l and l2 in engagement With the respective valves. The operating member 10 is pivoted so that when one ot the arms is in a raised position, the other will be depressed so that the suction passage will be open to one side of the vane and closed to the other. Upon lowering of the first raised arm, the other arm Will be raised and a reverse operation ensue. In the embodiment shown, the member 1() is pivotcd to the motor casing and is provided with a suitable spring or other resilient means which is adapted when moved from one side to the other of the pivotal point of the member 1() to automatically move the member 1() upon its pivot and actuate the valves.

In order to actuate the valve-operating mechanism, a suitable part or parts preferably actuated from the piston shaft are provided for causingr movement of the member 10. In the present embodiment, a springshifting device 13 is provided for such purpose. The spring is attached at one end to this shifting device, the other end of the spring being secured to the member 10, and as the spring-shifting device is moved from one side to the other of the pivotal axis of the member 10, the member 10 is automatically snapped or turned toward the side to which the spring is moved, independently of further movement of the vane shaft. Any suitable means may be provided for moving the shifting member from the vane shaft or other moving part of the motor. In the motor illustrated, the vane shaft is provided with a Dair of lugs 14 which are adapted to engage the spring-shifting device and to shift the portion of that device to which the spring is attached first to one side and then to the other side of the pivotal axis of the member 10. In the embodiment shown, the spring shifting device is provided with an end 15 whereby it is pivotally supported, and 1G designates a sleeve or bushing extending' around the vane shaft and on which said shaft moves. The sleeve or bushing 16 is preferably held stationary on the casing and the end 15 of the Vspring-shifting device bears on the sleeve or bushlng so that there is no tendency of the spring-shifting device to move with thefshaft until it is engaged by the lugs 14 on the shaft. As shown, this stationary mounting of the sleeve or bushing may be effected by providing the casing with a lug 17 Which takes into a notch 18 in the sleeve or bushing 1G and secures the sleeve or bushing against rotation with the piston shaft. l'n order to secure an accurate and certain shifting of the valves, the spring-shifting device is provided with parts adapted to positively shift the valve-operating member l0. 'lhcse parts are preferably .so positioned that in normal operation When the spring and valves are working properly these positively operating parts will follow the valve-actuating member 10 and if the valves stick or for any other reason the spring does not function to shift the valve operating member l0, these positive operating parts` will force the member 10 to its proper position, thereby positively moving the valves. As illustrated, these parts may comprise a pair of legs 19 and 20 on the spring-shifting device Which extend adjacent to a` part of the member 10, and which are adapted to positively move the member l0 from one side to the other in case the shifting of the end of the spring does not achieve the required results. The legs or positive actuating members being carried by the spring-shifting device and not in rigid connection with the vane shaft, insure a positive and firm action or movement of the valves, but by reason of the fact that as soon as the valves are seated the piston reverses and the lugs 14 move out of engagement with the spring-shifting device, the valves are yieldingly held in position by the spring.

The spring-shifting device 13 being supported from a pivot spaced a distance from the pivot of the valve-actuating means and being engaged by the lugs 14 a Short. distance below its pivotal point` and the spring being attached to the spring-shifting device a distance below that point, results in an adequate shifting of the spring with only a very small movement of the portion of the spring-shifting device engaged by the lugs. The result is that the spring-shifting device and the lugs may be so formed and Dosi- ISU i tioned that the lugs will not engage the spring-shifting device until practically at the end of the vane swing; therefore, the vane works on the valve-shifting mechanism during only a small part of its movement. rIhis results in a more rapid and effective movement of the vane under lower pressures duiing the major portion of the stroke and as the valve-shifting mechanism is not en 'gaged until just at the end of the vane stroke, the swinging momentum of the vane under low pressure 'is sufficient to insure actuation of the valves with the expenditure of a very slight amount ol energy; By reason of the fact that the spring-s iftiiig device is suspended from a pivot other than the pivot of the valve-operating means, the valve-operating means need not be permanently mounted on the casing, but may be removable. As shown in the embodiment disclosed, the motor is provided with piiitles or lugs 21 and 22 and the valve-operating means provided with recessed portions 23 and 24, into which these pintles tit, the valve-shifting member being held in engagement with the pintles by means of the spring I3. This facilitates manufacture and assembly of the device as the piiitle 21 may be readily cast or otherwise formed oiiftlie motor casing and a plate bolted or otlierwise attached to the casing, which plate carries the pintle 22. In assembling, the valve-operating means may be readily slipped into place with its recessed ortioiis engaging the pintles, the spring-shifting device slung from the shaft or other Support, and the spring 13 attached at one end to the spring-shifting device and at the o tlier end to the valve-operating means. This assembly, of course, facilitates replacement or repair of any of the parts.

lVe claim as our invention:

1. In a motor, a swinging vane, a valve movable into different positions to control the admission of operating fluid to said vane, a member having resilient means operated from said vane'for resiliently snapping said valve to said positions when said vane has swung through predetermined angles, and means operated from said vane for positively moving said valve to said positions.

2. In a motor having a swinging vane and a valve movable to different operating positions for controlling the admission of opeiatin fluid to said vane, a member havin resi ient means movable to'cause said va ve to assume different operating positions, means operated b said vane for moving said resilient mem er. and a part operatedby said vane for positively moving said valve to said different positions` g 3. In a motor having a swinging vane and valve movable to different operating positions for controlling the admission of operating iluid to said vane, a member having resilient means movable to cause said valve -to assume different operating positions. a

shifting member adapted to be operated by said vane and havinr a part engaging said resilient member to s ift said resilient meinber to actnate said valve, and parts movable simultaneously with said first-named part to insure positive operation of said valve` in case said resilient member does not actuate said valve.

4. In a motor liavinu a swinging vane and vane shaft and val-ves for controlling the admission of operating fluid for swinging said vane, valve-actuating and reversing mechanism comprising valve-operating means adapted to move the valves simultaneously from one operating position to another, resilient means engaging said valve operating means, a shifting device detacliably suspended about the axis of said vane shaft and having a part engaging an end of said resilient means to shift said resilient means to automatically snap said valve operating means to predetermined operating positions, said resilient means holding said device' operative and against unauthorized displacement, and a part of said vane shaft for swinging said shifting device about the axis of said vane shaft to cause said resilient means to operate said valve-operating means.

5. In a motor, having a swinging vane provided with a rock shaft and a valve for controlling the admission of operating fluid thereto, valve-operating means adapted to move said valve to ditl'erent operating positions, and a shifting device positively moved by said rock shaft, a part establishing resilient engagement between said shifting device and said valve-operating means to automatically sprin said valve to iosition, and a part on said s ifting device for positively engaging said valve-operatin means to positively move and follow t rough said valve actuator and then positively hold the latter in its new position.

6. In a motor having a swinging vane provided with a rock shaft, valves for controlling the admission of operating fluid thereto, a bearing on the case of said motor a distance from said rock shaft, valve-oper atin means releasably engaging said bearing for pivotal movement thereon and interlockingly engaged with said valves to be assisted thereby against lateral displacement, a shifting device pivotally mounted on the axis of said rock shaft, and resilient means connecting said valve-operating means and said shifting device and tending to hold said valve-operating means in engagement with said bearing, and means for moving said shifting device.

7. In a motor having a swinging vane provided with a rock shaft and valves for controlling theadmission of `operating Huid illl l ce

llU

thereto, a bearing on the case of said motor a distance from sind rock shaft, valve-operating means releasably engaging sind bearing for pivotal movement thereon, a shl'ty ing dc vice pivotally connected to 4said motor adjacent the axis of said rock shaft and operated h v said rock shaft, resilient means connecting said valve-operating means and said shi lting device and tending to hold said valve-operating means in engagement with said bearing and movable by said shifting device so as to extend at one side or the other ol said bearing to automatically shi't't said valve-operating means, and parts on said shifting' device extended beyond said bearing tor engaging said valve-operating means to positively move said means.

8. In a tiuid pressure motor hiving a rock shaft, valve mechanism Vfor controlling the operative admission otl lluid pressure to the motor for operating the saine, mnuprising a rockable valve operator, a shifting' device pivotally suspended ou the shaft, a spring connected at one end to the valve operator and at its opposite end to the ,shifting dcvice and adapted to have its latter cud moved under tension by the shitting device to opposite sides oi' the pivot ol' said valvi` operator, means acting to hold the shifting device against accidental displacement and operable by the shaft to engage and positively swing the shiftingr device to cllcct such shifting of the spring, and means operable by the shifting device t'or positively moving the valve operator and thereby shifting thc first end of the spring to the opposite sides of the pivot of said valve operator.

9. In a fluid pressure motor having a rock shaft, valve mechanism for controlling the operative admission of fluid pressure to the CERTIFICATE OF Patent- No. l, 670, 667.

motor for operating the same, comprisin a valve operator pivotally mounted at n istance from said shaft and having a part extending away therefrom, a shiftin device Lpivot ally suspended on the shaft an extending therefrom toward the valve operator, .a spring connected at one cud to said part of the valve operator and at its opposite end t0 the shifting device and adapted to be moved by the latter to opposite sides of the pivotal mounting ot the valve operator, and a lug member lixed on the shaft for engaging and swinging said shifting device and having a part overhanging the latter to prevent accidental displacement thereof.

1t). In a fluid pressure motor havinU a. rock shaft. valve mechanism for controlling the operative admission ot' fluid pressure to the motor for operating the same, comprising a valve operator pivoted to assume dift'ereut operating positions, a shifting device pivotcd ou the sha-tt. a spring connected at oml und to said valve operator and at its opposite cud to the shiftmg device and adapted to be moved by the latter to opposite sides ote the pivotal mounting of the valve operator, said shifting device having spaced legs extending on opposite sides of both the spring and said part of the valve operator, said legs adapted alternately to engage said valve operator part to swing and follow through the valve operator and hohl the latter in its respective operating positions, and means operable by and during movement of the shaft for moving the shifting device and following through the movement ol' the latter to positively hold the legs respectively against the valve operator.

JOHN 1t. OISHEI. ERVVIN C. HORTON.

CORRECTION.

Granted May 22. 1928, to

JOHN R. OISHEI ET AL.

lt is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Page 3, line 12, for the word "pressure" read pressures", and line 93, claim 4, for the word "of" read "on"; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 3rd dav of .lnly` A. D. 101- (Sell) M. J. Moore, Acting Commissioner of Patents.

thereto, a bearing on the case of said motor a distance from sind rock shaft, valve-operating means releasably engaging sind bearing for pivotal movement thereon, a shl'ty ing dc vice pivotally connected to 4said motor adjacent the axis of said rock shaft and operated h v said rock shaft, resilient means connecting said valve-operating means and said shi lting device and tending to hold said valve-operating means in engagement with said bearing and movable by said shifting device so as to extend at one side or the other ol said bearing to automatically shi't't said valve-operating means, and parts on said shifting' device extended beyond said bearing tor engaging said valve-operating means to positively move said means.

8. In a tiuid pressure motor hiving a rock shaft, valve mechanism Vfor controlling the operative admission otl lluid pressure to the motor for operating the saine, mnuprising a rockable valve operator, a shifting' device pivotally suspended ou the shaft, a spring connected at one end to the valve operator and at its opposite end to the ,shifting dcvice and adapted to have its latter cud moved under tension by the shitting device to opposite sides oi' the pivot ol' said valvi` operator, means acting to hold the shifting device against accidental displacement and operable by the shaft to engage and positively swing the shiftingr device to cllcct such shifting of the spring, and means operable by the shifting device t'or positively moving the valve operator and thereby shifting thc first end of the spring to the opposite sides of the pivot of said valve operator.

9. In a fluid pressure motor having a rock shaft, valve mechanism for controlling the operative admission of fluid pressure to the CERTIFICATE OF Patent- No. l, 670, 667.

motor for operating the same, comprisin a valve operator pivotally mounted at n istance from said shaft and having a part extending away therefrom, a shiftin device Lpivot ally suspended on the shaft an extending therefrom toward the valve operator, .a spring connected at one cud to said part of the valve operator and at its opposite end t0 the shifting device and adapted to be moved by the latter to opposite sides of the pivotal mounting ot the valve operator, and a lug member lixed on the shaft for engaging and swinging said shifting device and having a part overhanging the latter to prevent accidental displacement thereof.

1t). In a fluid pressure motor havinU a. rock shaft. valve mechanism for controlling the operative admission ot' fluid pressure to the motor for operating the same, comprising a valve operator pivoted to assume dift'ereut operating positions, a shifting device pivotcd ou the sha-tt. a spring connected at oml und to said valve operator and at its opposite cud to the shiftmg device and adapted to be moved by the latter to opposite sides ote the pivotal mounting of the valve operator, said shifting device having spaced legs extending on opposite sides of both the spring and said part of the valve operator, said legs adapted alternately to engage said valve operator part to swing and follow through the valve operator and hohl the latter in its respective operating positions, and means operable by and during movement of the shaft for moving the shifting device and following through the movement ol' the latter to positively hold the legs respectively against the valve operator.

JOHN 1t. OISHEI. ERVVIN C. HORTON.

CORRECTION.

Granted May 22. 1928, to

JOHN R. OISHEI ET AL.

lt is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Page 3, line 12, for the word "pressure" read pressures", and line 93, claim 4, for the word "of" read "on"; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 3rd dav of .lnly` A. D. 101- (Sell) M. J. Moore, Acting Commissioner of Patents.

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