US1601269A - Engine or like governor - Google Patents

Description

Sept. 28 1926. v J. L. TAYLOR ET AL ENGINE OR LIKE GOVERNOR Filed Jan. 26, 1923 3 Sheets-Sheet 1 fnrehz ar ([L. 77: YL 04' Sept. 28 192s. 1.601,269

J. L. TAYLOR ET AL v ENGINE OR LIKE GOVERNOR 7 A alor' War-neg Patented Sept. 28, 1926. 7

stars ,thhzth JOHN LLOYD 'IAYI-|QR, OF LITHERLAND, AND ALBERT EDW'ARD TAYLOR, OF GREAT CROSBY, ENG-LAND.

ENGINE OR LIKE GOVERNOR.

Application filed January 26, 1923, Serial No. 615,178, and. in Great Britain February 10, 1922.

This invention has reference to governors for controlling the rate of movement of engines or machinery for the purpose of preventing their racing or suddenly increasing their speed owing to the resistance or work being more or less suddenly relieved, such as happens with modern steam engines or internal combustion engines used in ships, by the lifting of the propellers more or less out of the water, or to the variation of the depths of immersion thereof, or to break downs such as the breaking of apropeller shaft, or crank shaft; and the species of governor to which the invention belongs is that which are mounted on a vibrating or reciprocating part of or worked by an engine or machine, and having a weight which when a normal rate of vibration, or reciprocation is exceeded, moves out of its normal position, and actuates through a suitable connecting part, a motor fluid controlling or other valve or part of the stream or internal com-' bustion or other engine, by which it is governed.

' In the usual form of such governors, the weight is longitudinally disposed, and mounted on a hinge or pivot, and operates on and in connection with two pawls one above and one below it,they being adapted by itto be moved upon their pivots inwards and outwards, according to the position of the Weight; as for instance the weight acts by a hinged double jaw device, on pin .on each of the pawls, but is separate from the said device, but connected thereto and pulled normally towards and operates the device through a spring or springs.

In governors having this construction of weight and pawl operating parts, defects have been found in a number of cases, which have caused abnormal wear and strain, and actualbreakage of the pawl operating gear, or inaccurate operation, and the chief object and effect of this invention as regards these parts is to provide improvements by which these defects areobviated, and the governor generally improved and to be relied on at all times, it being particularly desirable that it should be reliable during heavy weather, when it is more or less constantly in action and use.

In the governor according to this invention, in themechanism and parts by which the top and bottom pawls are actuated, the pivoted device which acts upon pins or the like of the top and bottom pawls, is in two separate parts, which are capable of independent movement, and the end of the weight which is held to the device by spring means, is provided with an arm or part on each side of it which acts, on the pawls in one direction, namely, in the in-direction, whilst in the other or outward direction, the said separate pivoted devices set on the pawls, secured to each of the devices near the common pivot of same, and to the outer part of the weight, and passing through an aperture through the weight, retains the inner surface on the arm devices; so that each part or side of the weight is independently held or pressed towards the pawl operating arm devices, separately. In governors of the kind concerned, as hitherto constructed, if through any cause the upper pawl (which say is for moving the parts of the governing means back to the normal state) should be partly operated and thrown outwards, and come in contact with or operate the controlling part of the gear, a strain will be thrown from this upper pawl to the lower pawl tending to throw the latter out, with the result that the mechanism is strained or rendered inoperative, or break down takes place; but in any case, there is abnormal strain and wearing of the parts, and the parts therefore which act on one another become loose, and the operation of the governor defective; but by the construction above described, abnormal pressure is not transmitted from one pawl and parts which operate in connection with it, to the other, and the defects and drawbacks referred to are obviated.

Further, in governors of the kind concerned, a supplemental spring pivoted mechanism is generally used in connection with the weight, comprising a spring and a spring ad usting screw or device, havinga self locking spring pressed bolt or pin working in connection with it; the pressure of the spring being transmitted to the weight by a rod or bolt or the like. The object of such means is to regulate the action of the weight whereby the governor is adapted to be capable of coming into action within a base plate or main carrier frame of the parts of the governor. The part which works in contact with the weight, and is pressed to wards it by the spring, consists of a rod or spindle, which is connected to the weight by a pin or like joint at a point, preferably, about the horizontal plane in which the pivot or spindle of the weight stands when in its mid position, so that the movement of this rod or spindle connection with the weight, outwards and inwards from the mean vertical plane, and general vertical axis of the spring device, is very small, and so wear is very small, and oblique strain and wear due thereto is avoided; whereas in mechanisms used heretofore the manner of the action of the spring pressed device, and its arrangement has been such that great wear has taken place, resulting in faulty and variable action; while the cost of the device has been relatively high.

In the drawings, Figure 1 is a front elevation, and Figure 2 an end elevation partly in section showing the construction of pivoted device in two separate parts; Figures 3 and a are section and outside views showing the supplemental spring pivoted mechanism according to the invention; Figure 5 shows a modification of the latter.

lVith regard to the feature of the pivoted device being in two separate parts, as shown in Figures 1 and 2, 1 represents the body of the weight. 2 and 3 are the upper and lower separate members of the pivoted device which operate in connection with it, both of which are pivoted on a common fixed pivot pin 4; and 5 are springs which are respectively connected to the levers or members 2, 3, which hold the weight 1, at one end, towards and on these members, the springs passing through a hole 6 in the weight body.

The upper and lower pivoted pawls which operate upon the lever through which the controlling valve or mechanism of the engine is actuated, are marked 7 and 8, respectively, being mounted on the frame or carrier plate 10 of the governor; and 11 are pins on the pawls 7 and S, which are operated upon by the levers or members 2, 3, in the outward direction. whilst in the inward direction they are operated upon by horns or projections 12 provided on each side of the weight 1; and the space between these horns and the ends of the members 2, 3, form jaws within which the pins 11 lie.

By this construction, the effects and advantages above described are obtained, and the avoidance of defective operation referred to is secured; that is to say, abnormal pressure is not transmitted from the one pawl, say the upper pawl, and the parts which operate in connection with it, to the other or lower pawl, and therefore the strains and breakages referred to, are prevented.

Vith regard to the supplemental pivoted spring mechanism which operates in connection with the weight 1, this is illustrated in Figures 3 and 4.

This device consists generally of a 1-1 secured to the base or carrier 10 governor above the weight 1, and a spring 15 disposed within the cylinder 16 of the case 14, which is pressed upon above by the adjustable screw 17, which is held in the position to which it is turned by its operating head 18, by a spring pressed bolt 15), which in its locking position lies in a vertical groove 20 in the screw 1?, the bolt being pressed back in the action by the sides of the groove pressing on the rounded nose of the bolt when the screw is turned by hand.

The device which the spring acts on, and which is connected with the weight 1, consists of a rod 21, the enlargement 22 of which has rounded sides, and tits freely in, and is adapted to move in the cylinder 16, whilst its lower end is connected by a pivot joint 2, with a saddle piece or fitting 24: which passes down into the weight, through a hole 25 therein, and is secured by flanges and screws to the top surface of the weight as shown.

The pivot 23 is in a horizontal plane in which the weight pivot lies when it is in the central position, so that the movement of this rod or spindle connection 23, in relation to the weight 1, outwards and inwards from the mean vertical plane and general vertical axis of the spring device, is very small. and so wear is very small, and oblique strain and wear due thereto, is avoided.

After the spring device is set or adjusted to impart the required degree of resistance or pressure to the weight, it remains stationary, and variations of speed of the engine for which it was primarily set to run, cannot take place.

In Figure 5 is shown a slight modification of the mechanism shown in Figures 3 and 4, namely, instead of the lower end of the spindle 21, being connected by a pivot joint to the weight 1, in the central horizontal plane of the weight, the spindle is provided with a hemispherical head, which acts on an annular corresponding seat in the hole 25, in which it works, so that movement of it in relation to the weight, is freely provided.

hat is claimed is 1. A governor including opposing pawls adapted to be projected to operate a controling member of an engine in one direction or the other, a weight mounted for pivotal movement upon an operating part of the engine, means carried by the weight for operating the pawls in the same direction in the swinging movements of the weight, and independent members connected to and moving with the weight for actuating the pawls in the opposite direction, whereby in the swinging movement of the weight in either casing of the direction one of the pawls will be projected to an operative position while the other pawl will be depressed beyond such position.-

2. A governor comprising pivotally mount-- ed pawls adapted when in operative position to be projected into the path of the control element of an engine, a weight pivotally supported intermediate the pawls and having projections to bear upon the pawls to move the same to an inoperative position selectively in a particular movement of the weight, and independent members engaging the pawls and operating in movement of the weight to move one or the other of the pawls to an operative position, and spring means connecting said members and weight to cause the members to move with the weight under a yielding connection.

3. A governor for engines including a base to be connected to a movable part of the engine, pawls pivotally supported on the base and adapted in normal position to be beyond the path of a control member of the en ine and in operative position to be in the path of such member, a weight pivotally supported intermediate the pawls and movable in the operation of the engine, pins projected laterally from the pawls, projections on the weightto bear upon the pins to move the pawls to an inoperative position when the weight is moved and pivotally mounted members underlying the pins and operative to move the pawls to an operative position in a particular movement 01": the weight,

springs connecting said members and weight to yieldingly hold the members in contact with the pins of the pawl in opposition to the contact of the weight projections there with, whereby said pawls are moved in reverse directions in any particular weight movement.

4:. A governor including opposing pawls adapted to be projected to operate a. controlling member of an engine in one direction or the other, a weight mounted for pivotal movement upon an operating part of the engine, means carried by the weight for operating the pawls in the same direction in the swinging movements of the weight, and independent members connected to and moving with the weight for actuating the pawls in the opposite direction, whereby in the swinging movement of the weight in either direction one of the pawls will be projected to an operative position while the other pawl will be depressed beyond such position, and a spring pressure device including a rod connected with the weight at a point in substantially horizontal alignment with the pivot of the weight when the weight is' in mid position.

5. A governor including opposing pawls adapted to be projected to operate controlling member of an engine in one direction or the other, a weight mounted for pivotal movement upon an operating part of the engine, means carried by the weight for operating the pawls in the same direction in the swinging movements of the weight, and independent members connected to and moving with the weight for actuating the pawls in the opposite direction, whereby in the swinging movement of the weight in either direction one of the pawls will be projected to an operative position while the other pawl will be depressed beyond such position, and a spring pressure device including a rod connected with the weight at a point in substan tially horizontal alignment with the pivot of the weight when the weight is in mid position, said spring pressure device being adjustable to vary the engine speed responsive weight movements at will.

In testimony whereof we have signed our names to this specification.

JNO. LLOYD TAYLOR. ALBERT EDWVARD TAYLOR.

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