US1297557A - Governor for controlling the supply of liquid fuel to stoves or heaters. - Google Patents

Description

J. F. GOODWIN & G. W. CAULKINS.

GOVERNOR FOR CONTBOLLING'THE SUPPLY OF LIQUID FUEL T0 STOVES 0R HEATERS.

APPLICATION FILED JAN. 10. I918.

Patented Mar. 18, 1919.

2 SHEETS-SHEET J 2 02371307 5; 4,61 9: qwm

J. F. GOODWIN & G. W. CAULKINS, GOVERNOR FOR CONTROLLING THE SUPPLY OF LIQUID FUEL T0 STOVES 0R HEATERS APPLICATION FILED JAN-10.1918- Patented Mar. 18,1919.

2 SHEETS'SHEET 2.

UNETED STATES PATENT OFFICE.

JOHN F. GOODWIN AND GEORGE W. CAULKINS, OF BOSTON, MASSACHUSETTS.

GOVERNOR FORCONTROLLING THE SUPPLY OF LIQUID FUEL TO STOVES 0B. HEATERS.

Specification of Letters Patent.

Patented Mar. 18, 1919.

Application filed January 10, 1918. Serial No. 211,284.

To all whom it may concern:

Be it known that we, JOHN F. Goonwm and GEORGE W. CAULKINS, citizens 5f the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Governors for Controlling the Supply of Liquid Fuel to Stoves or Heaters, of which the following is a specification, reference being had therein to the accompanying drawings.

Our invention relates to means whereby a liquid fuel, as oil, may with proper speed, be fed to a heater or stove burning the same, and employed in what is known as a heatercar; but it is to be understood that it may be used in other environments.

Some of the objects of our invention are to provide a feed governor having few parts, compactly arranged; easily and quickly assembled or disassociated; accessible for in spection and removal of parts, Without the necessity of breaking into the loaded car, or disturbing its contents; manufactured at a greatly reduced cost; and being designed to avoid an excess of flow of liquid fuel or oil at the stove or heater, frequently resulting in needless loss of oil, and in destructive fires.

This excess is generally due to a feedvalve whose packingor whose sealing metallic surfaces have become worn, or damaged, or scored or bruised by ignorant, unskilledworkmen in their attempts to repair, or modify the operation of the governor, when the heater-car was awayfrom its home repair-shop. For example, a valve has been removed, and thumped upon a stone and scored; or has been so crowded into its seat as to twist its packing out of shape, and allow what constitutes the excess of oil, to How through the open injured portions. Our invention makes use of a feed-valve of such construction that there is no occasion for subjecting it to such heroic treatment.

Further, heretofore, so much material, such as brass, has entered into the structure of the governor, that thieves have made a business of wrecking heater systems, to plunder it. Hence, one of the objects'of our inventionis so to design and arrange the parts of the governor, that there is not enough brass used, to make it an object of theft.

Further objects of our invention will appear hereinafter.

In the drawings, illustrating the principle of our invention and the best mode noW known to us of embodying the same in operative structure,

Figure 1 is a longitudinal section of a portion of the floor of a heater-car, and of a depending heater-box, with a heater, a suitable source of liquid fuel or oil, and our invention, viz: a governor, to control the flow of liquid fuel to the stove or heater.

Figs. 2 and 3 are, respectively, a rear and a front view of the governor.

Fig. 4 is a side elevation of it.

Fig. 5 is an enlarged longitudinal section showing the mechanical details, in full size.

Fig. 6 is a plan of sector-shaped supports used in connection with a gasket-diaphragm.

Figs. 7 and 8 are enlarged views of feed orifice brought about by the operation of the governor, and known respectively as the first fire and the low fire positions.

From longitudinal sills 1, Fig. 1, of a heater-car, covered with flooring 2, there is a depending heater-box 3, opening above, into 'flues formed between the sills, and having mounted on its bottom 4, a carbureted stove or heater 5, and a governor 6, embodying our invention. A combustion flue 7 leads away from the stove, while a stove feed-pipe 8, leads down from the governor to the stove, all in away well understood. Secured above the governor, between two adjacent sills of the car, is a suitable receptacle 9, for liquid fuel, or oil, from which the oil may flow to the governor, through a feedpipe 10.

As all of the foregoing apparatus, excepting the governor, is old and forms no part of our invention, we will now describe the construction of the governor.

To a metal base 11, Figs. 2, 3, 4 and 5, fixed to the bottom 4, Fig. 1, of the heaterboX, just in front of an opening 12, to the outside'air, is secured a vertical base-support 13 having a longitudinal circular air opening 14, Fig. 2, and inwardly extending radial ears 15 designed to sustain certain governing mechanism, and a bracket 16 supporting certain governed mechanism. That portion of the bracket adjacent to. the base support is circular, and has outwardly projecting lugs 17 corresponding in number and position with the ears 15 on the base-support; the holes through each pair of ears and lugs, being in line and receiving threaded bolts 18 for securing the bracket 16 and base-support 13 together. Cut into circular face of the bracket, is a shallow cylindrical recess 19, Fig. 5, having in its longitudinal axis, the center of said face, and forming a part of the oil circuit leading away from the governor; while extending from said re cess 19, and through the bracket in its longitudinal axis, is a cylindrical oil channel 20 which also serves as a container for a part of the governed mechanism. The outer end portion of this channel is internally threaded, and receives a sustaining plug 21,

having a number of lengthwise oil passages 22 communicating with the oil channel. The inner face of thisv plug serves asan abutment for one end of a restoring coil spring 23 within the oil channel, while the other end of the'spring' engages the rear face of a positioning head 24 and integral shank25, slid'able in the oil channel, and having longitudinally extending through them, a passage 26 in which are mounted a positioning spring 27, a positioning nut 28, and a threaded adjusting plug 29; said spring abutting said nut and said plug. The positioning head has longitudinal oil passages 30, connecting the oil channel 20 with the oil recess 19 in the face of the bracket Mounted in the longitudinal axis of the sus taining plug 21 is an operating plunger 31. the rod 32 of which is screwed into the po sitioning nut 28 within the shank 25 of the positioning head 24, while the plunger 31 just contacts a valve member, later to be described. I

To close and seal the shallow, cylindrical oil recess 19 in the bracket, a thin galvanized sheet iron gasket-diaphragm 33 is provided, its circumferential edge 34 being bent at right angles and soldered into a slot provided therefor in the face of the bracket 16. This diaphragm is designed to be, pressed outwardly by the positioning head 24 of the governed mechanism; and that it'may efficiently do so, separate plane sector-shaped supports 35, Figs. 5 and 6, of thin soft steel, contact the under surface of the gasket-diaphragm 33; the curved base and the apex portion of each, resting respectively upon a seat 36 in the bracket 16, and the free end portion of the positioning head 24.

Leading down ,and away from the shallow oil recess 19, is an outlet 37 with which the heater or stove is connected by the stove feed-pipe 8.

The governing mechanism is a closed governing receptacle 39 and comprises a circular sheet brass diaphragm 40, somewhat inwardly depressed, corresponding in diameter to that of the gasket-diaphragm 33 on the bracket; and a member 41, exteriorly, spherically convex, pressed into shape out of soft sheet steel; the circumferential edges 42 and 43 of the diaphragm and the convex member being bent into the same plane and soldered together air-tight. In the edges of the receptacle are two nipples the distance between the free end portions of the ears of the base-support, and that a slightly raised ring portion on the receptacle, when in operative position, meshes with a correspondingdepression in the face of the gasket-diaphragm of the oil'reces's in the bracket. I, upon the free end portions of the bolts 18 passing through the ears 15, and engage edge portions ofthego-verning receptacle. A thin metal ventilating and protecting ring 47, Figs. 3 and 5, is mounted upon these bolts and rests upon the tops of the fingers 46, and against the convex surface 41, of therec'eptacle; and the nuts, when screwed down on the bolts and against the said ring, bind together, in operative position, the bracket,

governing member and the base support; it

being noted that the inner inwardly-bent edge portion of the ring contacts the convex surface of the receptacle; while the outer edge of thering abuts the standard 13. In this way, the said ventilating and protecting ring 47 limits and controls the amount of convex surface 41 of the receptacle, exposed to the direct heat of the stove 5, Fig. 1.; and, with the air openings 14, Figs. 3 and 5, in the standard 13, permit the outside air,

through the opening '12, in the base 11, to

come into direct contact with only so much of said convex surface, as is covered by the ventilating and protecting ring.

Now, to the bracket portion 16, described above, is removably secured, by means of a threaded union 48, a feed-valve containingmember 49, circular in cross section; the plane adjacent surfaces of the bracket and the containing-member, beingin intimate non-oil-leaking contact. Extending through the containing-member, in the axis of the oil channel 20, of the bracket, is a circular hole 50, having in its mid-portion, a brass bushing 51 fixed therein, to receive and permit a feed-valve member 52 to reciprocate freely.

An oil passage 53 is formed in the bracket 16 from where the feed-pipe 10 joins it, and leads to a circular groove 54 cut in the face of the bracket adjacent to the face of the valve containing-member, into which anoil passage 55 formed longitudinally in the valve containing member, opens directly; the radius of the axis of the passage, and the radius of the oil groove, from the longitudinal axis of the governed mechanism,

Finger members 46 are mounted being the same. The other end of the oil while the inner end of the recess is all but closed by the bushing 51 through which, however, is a small valve opening 58, Figs. 5, v7 and 8. An oil channel 59 runs longitudinally through the feed-valve member; and has two transverse branch channels 60 and 61, leading in line, from its mid-portion; that branch channel "60 which serves as a valve opening being of restricted area 60, as compared with that of other oil passages. Directly opposite the valve opening 58 in the bushing are an opening 62 in the bushing, and one 63 in the casing, the latter being closed by a screw plug 64. The purpose of these holes is to'permit a person to sight through the transverse passages, in the operation of cleaning them. To determine and limit the reciprocation of the feed-valve member 52, each end portion is threaded, and they receive threaded abutment rings 65, 65 of a diameter larger than that of the valve member, but less than that of the oil channel, so that the ends of the bushing may movably confine the valve member longitudinally. Two slotted headed binding screws 66 and 67 fiX the abutment rings in position upon the valve member; one screw 66, engaging the plunger, and the other 67 abutting a valve restoring spring 68 held compressed by the inner face of a screw plug 69 threaded into the open end portion of the oil channel in the feed-valve containingmember, and closing it. A pin 70 in the valve containing-member, engages a longitudinal slot in the feed-valve, and confines the movements of the valve to the same vertical planes.

As is well understood, a heater-car is intended for use when the outside temperature is about or below freezing point, viz: 32 Fah.

It is assumed, therefore, for purposes of illustration, that the temperature of the outside air is 10 above zero; that the temperature within the car. to prevent, say, a carload of potatoes from freezing, must be about 40; that for the particular car now in question, the temperature of the air in the heater-box must be about 250; and that experiments with the governor have shown that the governing receptacle, to be operative under these conditions, must be absolutely full ofliqu-id, such as kerosene, at atmospheric pressure, and at an arbitrary temperature of about 70.

To bring about this state in said receptacle, kerosene, when the receptacle is entirely disassociated from the bracket, is forced. into the receptacle by a hydraulic pump, attached to one of the two nipples as 4L5, until all the air is driven out, and kerosene overflows at the top nipple 44.. The latter is then sealed by a tapered screw, and more kerosene is forced into the receptacleand there sealedthan will be required to fill it at 70, at atmospheric pressure, and under the actual pressure of the restoring spring 23. These conditions may be obtained by placing the receptacle alone in a jig which exactly duplicates the parts of the bracket 16; and then immersing the receptacle and jig in a bath of water at 70. There they remain until the receptacle acquires that temperature. The plunger like 16 of the jig will protrude slightly from the sustaining plug like 27 thus indicating that there is too much liquid within the receptacle for the working conditions required by the governor; hence the sealing screw of the closed nipple at-JL is loosened, and liquid exudes until the superior force of the restoring spring like 23, is in equilibrium with its opposing forces; at which time, the open 4H: nipple is again closed; as is the nipple 45, by a suitable device and screw. The receptacle is now in permanent condition for use in any governor whose action depends upon an arbitrary operative adjustment, at 70; provided of course the receptacle does not leak. To be certain that it does not, it is placed in a hot chamber where it is subjected, While still in the jig, to a temperature of not less than for a period of, say, not less than two weeks; when if no leak develops, the receptacle is removed from the jig, and stored with others, tested under like conditions, for future use.

()bviously this method may be used should the arbitrary adjustment required, be at 60, or any other degree of temperature.

Further, the form and size of the valve opening 58, Figs. 5, 7 and 8, and the valve slot 60 have been determined upon, after experimentation, and will operate successfully under the circumstances above assumed.

To aid in an understanding of the operation of our governor, we will now state that when the valve slot and the valve opening are in the position shown in Figs. 5 and 7, they are said to be in first fire position; Fig. 8 shows them in low fire position; while center fire position results when the openings are in central relation to each other, and have the greatest cross-sectional outlet area for the outgoing liquid fuel.

We will now describe the operation of our invention, it having been assumed, as already stated, that the temperature of the outside air is 10 above zero; that the temperature of the interior of the car is to be kept at about 40; and that to accomplish this result, the temperature of the heater-box must be nominally at 250.

The position of all the parts is 'as shown in Fig. 5; the valve outlet and the valve slot being in first fire position, is clearly shown in detail in Fig. 7

The supply valve 72, Fig. 2, is open. Oil flows from the source of supply 9, Fig. 1,

through feed-pipe 10, Fig. 1, the channel 53 in the bracket 16 to the circular ring channel 54 in the face of the bracket. From there it flows into the oil passage 55 and the radial recess 56 in the valve containing-member. From here, it passes the outlet valve opening 58, into the valve slot 60", and through the valve member 52, out through the slotted bindii'ig screws 66 and 67; through the oil passages 22 in the sustaining plug 21; through the oil channel 20 in the bracket, and the channels 30 in the positioning head 24, and into the shallow oil space 19, formed between th bracket 16 and the gasket-diaphragm 33; and thence down through the feed-pipe 8 to the carbureter of the stove or heater 5 in the heater-box 3, where the flame is started.

The temperature in theheater-box begins to rise, and continues so to do, the valve position beingthat of first fire; the liquid in the driving receptacle 39 is being. subjected to this increasing temperature of the heater box, the direct heat from the stove,

contacting so much of the convex surface of the receptacle as is not protected by the ring; while the cooler outside air,by reason of the opening 12, Fig. l, in the bottom' of the heater box; the circular opening 14, in the vertical base support 13, Figs. 2, 3 and 5; the casing 73, Fig. 1, covering the rear of the governing mechanismyand the ventilating and protecting ring 47,'has access to so much of the circumferential edge portions of the spherical surface of the shallow governing receptacle 39, as is covered by the ventilating ring. The temperature of the liquid is also affected by that of the outside air, through the heat conductivity-of the metal valve-containing-member 49, the bracket 16, the gasket diaphragm 33, and the circular surface diaphragm Q0, of the receptacle.

The temperature of the liquid in the receptacle responds to the changes in temperature outside thereof, and it responds quickly, because the liquid is confined within a thin spherical segment by a large spherical convex surface 41, not covered by the ventilating ring 47, and is directly exposed to the heat of the stove in the heater box; while so much of the spherical surface as is under the ventilating ring, and the diaphragm 40, in contact with the gasket diaphragm, part of the bracket 16, are directly exposed to the outside air. In fine, the shallowness of the receptacle, with its suitably proportioned areas exposed to different amounts of heat, facilitates such absorption and radiation of heat by the governing receptacle, as renders the governor sensitive and quickly responsive to the resulting changes in the temperature of the heater-box, and of the outside air.

When the resultant of the various temperatures, tofwhich the receptacle is exposed,

reachesdegrees, the expanding liquid begins to move the diaphragm l0, F 1g. 5, toward the bracket; the pressure of the expanding liquid being distributed evenly over the surface of the gasket-diaphragm 33, sup ported by the sector-supports 35, whose free ends concentrate the resulting pressure upon the adjacent positioning head 24: in the bracket oil channel 20, this pressure overcoming the tension of the main restoring spring 23, in said channel. Meanwhile, the

second but Weaker spring 27, within the:

shank 25, has pushed ahead the abutting nut 28, connecting rod 32, and operating plunger 31, thereby transmitting said movement tocontinues expanding, and the feed-valve approaching, and passingthe center or high fire position; at about which time, probably, the temperature of the heater-box is considerably v above the 250 required to keep the storage compartments of the heater-car at 10 temperature. But, it will be noticed that, after the valve has passed through the high fire position, the resulting outlet passage through the valve, see Fig. 8, begins to become reduced 111 area, more and more,

as do the amount of oil flowing to the heater,

the size offlame, and the amount of heat given off in the heater-box; but, be it remembered, that this passage cannot be, and

never is closed, because the valve abutment ring 65. engages on the shoulder of the bushing 51 when low fire position is reached, as in Fig. 8; but when the valve is at low fire, not enough oil flows to the stove to keep the heater-box at 250. This too low temperature in the heater-box having been reached, the liquid in the governing receptacle contracts, and in contracting, the main restoring spring 23 causes the operating head, sector-supports and gasket diaphragm 33 to follow the movement of the liquid receptacle diaphragm 10, and draw along the nut 28, rod 32, and plunger 31; while the small return spring 68 in the feed-valve containing-member, independently causes the valve 52 to follow on in contact with the plunger 31, toward high fire position, and its valve slot to become wider open. But before high fire position is reached, the valve has increased the flow of oil to the stove, tosuch an extent, that the temperature of the heater-box has returned to about 250, which is that normally required for the heatercar. In short, the proper valve opening for that temperature lies somewhere between the high fire, and the low fire position, and the valve slot never returns through high fire to first fire position, until the fire goes out, or for some reason the governor becomes inoperative; for the high. fire position is designed to enable the governor to supply more than enough oil to the stove to heat the car properly, regardless of the intensity of cold ordinarily met with, outside the car. In terms of the movements of the valve, it may be said that, in starting, the valve moves in one direction from first fire position, to and through high fire position, to low fire position;

- perature over normal, this movement be greater than that contemplated for that of the valve member, then there will be no resulting breakage of parts, because the connection between the nut 28 and the shank member 25 of the positioning head 24 is the yielding spring connection 27 which would simply become compressed between the moving head and the rigid nut.

Also it is to be observed that the valve openings and the oil passages leading from the valve to the carbureter are of such sizes that no part of the passages is ever filled with oil; the governor permitting more or less oil, as is required, simply to trickle down through them, to the carbureter; the movements of the valve being almost instantly manifested by the supply of oil at the carbureter. In other words, the oil passages are never filled; and, after the valve of the governor has acted, they do not remain more or less full, and there is no excessive supply of oil at the carbureter, for an objectionable length of time. In short, by means of this feature of our invention, the governor acts almost instantly upon the supply of oil at the carbureter, and without obi ectionable delay. Still further, where full oil passages are required, air vents have to be provided, and these necessitate complicated and costly apparatus and material. The non-filled pas sages of our invention obviate these objections.

Also, the metal diaphragms 40 and 43 are much larger in diameter than is usually the case, consequently for a certain amount of movement, there would be, less buckling of the metal, and a much longer life to the diaphragm; a less powerful spring to hold one diaphragm in operative position, in contact with the diaphragm of the receptacle; less Wear of the diaphragm at the points of contact with the sector-plates; and also, where a separate restoring spring for the valve is used, the main restoring spring, formerly employed also to operate the valve, may be still further reduced in size and strength.

We have found in practice, that, with the exposed and the unexposed spherical surface of the receptacle, brought about by the ventilating and protecting ring 47, the governor automatically operates successfully when the outside temperature ranges from a minimum degree of heat, as 60 below 0 to a temperature of 50 above 0, of heat. It is to be understood, however, that the operation of the governor is not to be limited to the abovementioned range of 110, for it may be adjusted to a greater range.

Desiring to protect our invention in the broadest manner legally possible,

What we claim is 1. In a governor to control the flow of liquid fuel to a stove or heater, a base support, with a circular, horizontal opening therethough; a sheet metal governing receptacle having an exteriorly spherical convex face and an interior circular plane surface, and designed to contain a suitable expansible liquid; means to hold said receptacle in operative position in relation to said circular opening through said base support; and a ventilating and protecting ring having its inner edge resting upon the convex surface of the receptacle, and its outer edge contacting the base support; and means to secure said ring and receptacle in operative position, thus permitting air to pass through said support, and come into contact with the circumferential edge portions of'the spherical surface of the receptacle.

2. In a governor to control. the How of liquid fuel to a stove or heater, a sheet metal governing receptacle having an exteriorlyspherical convex face, and designed to contain a suit-able expansible liquid; a ventilating and protecting ring having its inner edge resting upon the convex surface of the receptacle, and its outer edge forming part of an air channel; whereby one body of air may contact such portion of the convex surface of the receptacle under the ventilating protecting ring, and another body of air has access only to so much of said convex surface of the receptacle, as is not covered or protected by said ventilating and protecting rmg.

3. In a governor to control the flow of liquid fuel to a stove or heater, a sheet metal governing receptacle having a front and rear face, and designed to contain a suitable expansible liquid; and means whereby the rear face, and the edge portion of the front face may be subjected to an atmosphere at uid fuel to a stove or heater, a base support, with a circular, horizontal opening therethrough; a sheet metal governing receptacle having an exteriorly spherical convex face and an interior circular plane surface, and designed to contain a suitable expansible liquid; and means whereby said governing receptacle may be removably secured to said base support; said circular plane surface and said circular opening in said support, having their centers in a common horizontal axis.

5. In a governor to control the flow of liquid fuel to a stove or heater, a base support, with a circular, horizontal opening therethrough, and inwardly extending radial ears; a sheet metal governing receptacle having an eXteriorly spherical convex face and an interior circular plane surface, and designed to contain suitable eXpansible liquid; means against which said plane surface may be pressed; bolts passing horizontally through said ears; and retaining fingers mounted upon said bolts to engage the spherical face of said receptacle, and hold :said receptacle in operative position in relation to said circular opening through said base support.

6. In a governor to control the flow of liquid fuel to a heater car stove; a vertical base support; a bracket member having a liquid feed channel extending horizontally through the same; a circular diaphragm forming a side portion of said feed channel; a positioning head slidably mounted in said channel, and having liquid fuel passages therethrough; a hollow shank integral with said head; a sustaining plug in the outer end portion of said channel, with liquid fuel passages therethrough; a coil spring within said oil channel, and abutting said sustaining plug and said positioning head; a valve operating plunger mounted in said sustaining head and movably secured Within the. end portion of said shank; and a coil spring removably mounted within said hollow shank and abutting said plunger and said positioning head. 7

7-. In a governor to control the gravity flow of liquid fuel to a heater car stove, a

base support; a bracket member removably secured tothe base support; a valve containing member :removably secured to said bracket; and temperature controlled governang mechanism 'removably secured to the base support; governed mechanism reciprocatingly horizontally mounted within said bracket; and feed valve mechanism reciprocatingly horizontally mounted in'said valve containing member; the rtemperature controlled .governing mechanism, governed mechanism, and feed valve mechanism all having common longitudinal horizontal forward and back movements; all designed that the governing member, valve containing member, or the bracket member and valve containing member may be removed from the governor without disturbing the other member or members.

8.- In a governor to control the gravity flow of liquid fuel to a heater car stove, a valve containing member having a liquid supply passage, and a horizontally disposed liquid feed channel at a level lower than that of the liquid supply passage; a feed valve member reciprocatingly mounted in, and closing said liquid feed channel; said valve member having a passage leading from the side of said valve member to one end of said valve and opening into the said liquid'feed channel; said valve containing member also having'a small valve opening leading from said liquid supply passage to said liquid feed channel; and means to reciprocate said valve member; said small valve opening and said passage opening in the side of the feed valve, always registering, but by the movement of the feed valve, varying the cross-sectional area of the resultin opening, through which all the liquid fed through the governor has to pass; the resulting cross-sectional area, and the cubical capacity of the feed chanel hearing such relations to each other that the amount of liquid being fed to the feed valve is not enough to fill any portion of the feed channel leading to the burner of the stove.

.9. In a governor to control the gravity flow of liquid fuel to a heater-car stove, a temperature controlled receptacle, designed to be filled with-a suitable liquid having the desired coefficient of expansion at certain temperatures, one face forming a driving diaphragm; aimember fixed in relation to said receptacle and having an oil channel therethrough, aside portionof said channel being a diaphragm adjacent to the diaphragm of said receptacle; a sustaining plug in said oil channel; a positioning head and shank reciprocatingly mounted :in said channelysaid plug and head having oil passages therethrough; a restoring coil spring abutting said plu and head to cause said head to engage and always hold said diaphragm of the oil channel, incontact with the driving diaphragm; aplunger and-a rod mounted in the longitudinal itXlS of the sustaining :plug; means-whereby said rod and said positioning head and shank are elastically connected; a valve containing member .hav-

ing a :liquid supply passage and a liquid feed channel; a feed valve :memberclosing,

and reciprocatingly mounted in, said liquid said liquid feed channel; said valve-containing member having a small valve opening leading from said liquid supply passage to said liquid feed channel whereby the liquid fuel flows into the side, but out of the end of the valve member, into the liquid feed channel in which it is reciprocatingly mounted; means to limit the reciprocation of said valve member; and a spring to tend to move the valve member toward, and hold it in contact with, th plunger.

10. In a governor to control the gravity fiow of liquid fuel to a heater-car stove, a temperature controlled receptacle, designed to be filled with a suitable liquid having the desired coefiicient of expansion atcertain temperatures, the circular face forming a driving diaphragm; a bracket member fixed in relation to said receptacle, and having an oil channel therethrough; a side portion of said channel being a diaphragm adjacent to the diaphragm in said receptacle; driven means, controlled by'the movements of said diaphragms; and elastic means to cause said driven means to follow the movements of the diaphragm of the driving receptacle; a valve containing member, having a liquid supply passage, and a liquid feed channel; said liquid feed channel having the said longitudinal axis as the liquid feed channel in the bracket; a feed valve member closing, and reciprooatingly mounted in, said liquid feed channel, said member and said channel having the same longitudinal axis; said valve member having a passage leading from its side, through to one end of said valve member, and opening into said liquid feed channel; said valve containing member having a small valve opening leading from said liquid supply passage to said liquid feed channel whereby the liquid fuel may flow into the side, but out of the end of the valve member into the liquid feed channel in which it is reciprocatingly mounted; means to reciprocate said valve member; means to limit the reciprocation of said valve member; and a spring to tend to move the valve member toward, and hold it in contact with said driven means; said small valve opening and said passage opening in the side of the feed valve always registering, but, by the movement of th feed valve, varying the cross-sectional area of the resulting opening through which all of the liquid fed through the governor, has to pass; the said resulting cross-sectional area, and the cubical capacity of the feed channel bearing such relation to each other that the amount of liquid being fed through the feed valve, is not enough to fill any portion of the feed channel leading to th burner of the stove.

11. In a governor to control the gravity flow of liquid fuel to a heater-car stove, a temperature controlled receptacle in the form of a spherical segment and designed to be filled with a suitable liquid having the desired coefficient of expansion at certain temperatures, the circular face forming a driving diaphragm; a bracket member fixed in relation to said receptacle, and having an oil channel in said member, a side portion of said channel being a circular diaphragm adjacent to the driving diaphragm of said receptacle; separate sectorlike plates separating but contacting said adjacent diaphragm, whereby the movements of the two diaphragms become centralized; a sustaining plug removably fixed in said oil channel; a positioning head and shank reciprocatingly mounted in said channel; said plug and head having oil passages therethrough; a restoring coil spring abutting said plug and head to cause said head to engage and always hold said diaphragm ofthe oil channel, in contact with the driving diaphragm; a plunger and a rod mounted in the longitudinal axis ofv the sustaining plug; means whereby said rod and said positioning head and shank are movably connected; a valve containing member removably secured to said bracket member, and having a liquid supply passage, and a liquidfeed channel, said liquid feed channel having the same longitudinal axis as the liquid feed channel in the bracket; a feed valve member closing, and reciprocatingly mounted in, said liquid feed channel, said member and said channel having the same longitudinal axis; said valve member having a passage leading from its side, through to one end of said valve member, and opening into said liquid feed channel; said valve containing member having a small valve opening leading from said liquid supply passage to said liquid feed channel whereby the liquid fuel flows into the side, but out of the end of the valve member, into the liquid feed channel in which it is reciprocatingly'mounted; means to limit the reciprocation of said valve member; and a spring to tend to move the valve member toward, and hold it in contact with, the plunger; said small valve opening and said passage opening in the side of the feed valve always registering, but by the movement of the feed valve, varying the cross-sectional area of the resulting opening through which all of the liquid fed through the governor, has to pass; the said resulting crosssectional area, and the cubical capacity of the feed channel bearing such relation to each other that the amount of liquid being fed through the feed valve, is not enough to fill any portion of the feed channel leading to the burner of the stove, so as to feed more to the burner than can be safely consumed.

12. In a heater-car, a heater-box; a heater or stove in said box; a liquid fuel supply; a governor located below said source of supply, but above the burner of said heater or stove, to control the gravity flow of liquid fuel to said heater or stove; said governor comprising a temperature controlled receptacle, designed to be filled with a suitable liquid having the desired coefficient of expansion at certain temperatures, one face forming a diaphragm; a member fixed in relation to said receptacle, and having an oil channel, a side portion of said channel being a diaphragm adjacent to the diaphragm of saidreceptacle; a sustaining plug in said channel; a positioning head and shank reciprocatingly mounted in said channel, said plug and head having oil passages therethrough; a restoring coil spring abutting said plug and head to cause said head to engage and always hold said diaphragm of the oil channel, in contact with the driving diaphragm, a plunger and rod mounted in the longitudinal axis of the sustaining plug; means whereby said rod and said positioning head and shank are elastically connected; a valve containing member, having a liquid supply passage and a-liquid feed channel; a feed valve. member closing, and reciprocatingly mounted in, said-liquid feed channel, and having a passage leading from its side, through to one end of said valve member and opening into catingly mounted; means to limit the reciprocation of said valve member; and a spring to tend to move'the valve member toward, and hold it in contact with, the

plunger; said small valve opening and said passage opening in the sideof the feed valve always registering, but by the movement of the feed valve, varying the cross-sectional area of the resulting opening through which all of the liquid fed through the governor, has to pass; the said resulting crosssectional area, and the cubical capacity of the feed channel hearing such relation to each other that the amount of liquid being fed through the feed valve, is not enough to fill any portion of the feed channel leading .to the burner of the heater or stove so as to feed more to the burner than can be safely consumed.

In testimony whereof we hereunto aflix our signature. 7

' JOHN F. .GOODWIN. GEORGE W. CAULKINS.

Geni s of this natcnt may h cbte md or .five ce each y ad re ing th mmissi ner v0 3 tr .cs,

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