US1150620A - Automatic liquid-fuel cooking apparatus. - Google Patents

Description

R. M. G. PHILLIPS.

AUTOMATIC LIQUID FUEL COOKING.APPARATUS.

APPLICATION FILED Nov. 7. 1914.

1,150,620. Patented Aug. 17,1915.

4 SHEETSSHEET I.

R. M. G. PHILLIPS.

AUTOMATIC LIQUID FUEL cookme APPARATUS.

I APPLICATION FILED NOV-7,1914. v 1,150,620, Patented Aug. 17, 1915.

4 $HEETSSHEET 2.

9% an mm QM my W ABM W QM 8 MM 0% i \xM. m Q8 A Al "M A l R. M. G. PHILLIPS.

AUTOMATIC LIQUID FUEL COOKING APPARATUS.

APPLICATION FILED NOV-7.1914.

4 SHEETS-SHEET s.

Patented Aug. 17,

IFHDI B- M. G. PHILLIPS.

AUTOMATIC LIQUID FUEL COOKING APPARATUS.

APPLICATION FILED NOV. 1, 1914.

1,150,620. Patented Aug. 17, 1915.

4 SHEETSSHEET 4- i l I 70 h I BOSS M. G. PHILLIPS, OF WEST HAVEN, CONNECTICUT.

AUTOMATIC LIQUID-FUEL COOKING APPARATUS.

Specification of Letters Patent.

IatentedAug. 17, 1915.

Application filed November 7, 1914. Serial No. 870,782.

To all whom it may concern Be it known that I, Ross M. G. PHILLIPS, a citizen of the United States, residing at \Vest Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Automatic Liquid-Fuel Cooking Apparatus; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, -to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in

Figure 1 a view in front elevation of an automatic liquid fuel cooking apparatus constructed in accordance with 'my invention. Fig. 2a view thereof in right hand side elevation. Fig. 3 a View thereof in vertical central section, from front to rear through the ingress and egress draft passages. Fig. 4 a plan view of the apparatus. Fig. 5 a sectional view of the apparatus on the line w-b of Fig. 1 with the burner swung into its exposed cleaning position. Fig. 6 a broken view of the apparatus in right hand side elevation showing the main features of the operating mechanism of which the burne'r-and-tank swivel is-shown in vertical section. Fig. 7 a detached view in vertical section of the burner-base. Fig. 8 a broken detail plan view of the burnerand-tank swivel and its lock. Fig. 9 a detached broken sectional view of the feeding mechanism of any one of the tanks. Fig. 10 a detached view in side elevation of a double-ended tank for the extension-frame. Fig. 11 an end view thereof.

My invention relates to an improved liquid fuel automatic cooking apparatus, the object being to provide a simple, safe, convenient and effective apparatus of the character described.

in a horizontal plane to permit the burner to be swung forward of the cooking-compartment 5,215; shown in Fig. 3, to enable it to be conveniently cleaned and also lighted in case the pilot-light is not relied upon for lighting it. The said-burner is located directly below a circular shutter or closure 6 swinging in a horizontal plane and co-acting with a flanged circular shutter-seat 7 applied to the bottom of the compartment 5 in line with a centrally arranged spacingring 8 located between the Walls of the said compartment and forming the ingress draft-passage 9 of the apparatus. The said burner-base 2 is formed with a projecting boss 10 receiving the lower end of a supporting-arm 11 the upper end of which is provided with a collar 12 applied to the projecting lower end of a tubular swivel 13 having bearing in a sleeve 14 depending from a plate 15 having an arm 16 by means of which it is secured to the bottom of the cooking compartment 5. The projecting upper end of the tubular swivel 13 receives a suspension collar 17 secured to it by asetscrew 18, and furnished with lugs 19 carrying a pin 20 upon which the burner-swinging handle 21 is pivoted. The said handle 21 is formed upon its lower edge with a lug 22 entering a locking-notch 23 in the edge of the plate 15 in position to receive the said lug 22 when the burner is in its heating position in which it is thus locked by the handle 21. The collar 17 bears upon the upper face of the plate 15 and virtually suspends the tubular swivel 13 therefrom.

The burner is connected with the tank 4 by means of a feed-tube 24 having its inner end furnished with an elbow 25 connected by a swivel 26 and gland 27 with a chamhered lug 28 depending from the burnerbase 2. The outer end of the said tube 24 enters a threadedv fitting 29 cast integral with a cast feed-cup base 30 carrying a feedcup 31, receiving the neck 32 of the tank 4.

The describedswivel connection of the feed-tube 24 with the burner-base 2, permits the tank 4 to be raised and lowered with respect to the burner for changing the level of the oil in the burner for flooding and for draining the annular wick-chamber 33 (Fig.'

7) thereof.

For liftingthe tank 4 with respect to the burner, I employ a lifting-rod 34 furnished at its lower end with 'a horizontal arm 35 terminating in a hook 36 receiving the tube 2-ltoward the outer end thereof. The said rod 34 extends upward through the tubular swivel 13, its projecting upper end being threaded for the application of a lifting-nut 37 and a lock-nut 3S therefor. The under fare of the said nut 37 is engaged by a fork 39 formed at the forward end of the arm 40 of a rocking lever 41 hung upon a. stud -12 projecting from the right hand side of the compartment 5." The rear arm 4-3 of the lever 41 is formed with a slot H receiving a coupling-pin 15 in the lower end of a clip 46 mounted upon the rear end of an operating-lever 47 extended to a. point in front of the compartment 5 and having a knob-like handle 43. At its rear end the lever 47 is entered into a sleeve 49 integral with the lower end of an upstanding lever 50 rocking upon a pin 51.

For the simultaneous operation f the shutter 6 employed for closing the ingress draft-passage 9 and the damper 52 employed for closing the egress draft-passage 53, the lever 50 is connected by a link 54 with a rock-arm 55 mounted upon the end of a horizontal rock-shaft 56 mounted in brackets 57 secured to the back of the cooking compartment 5. The said rock-shaft 56 carries a rock-arm 58 connected by a link 59 with the shutter 6 which is formed with a depending hub 60 swinging upon a stud 61 depending from the shutter-seat 7. A helical spring 62 encircling the hub 60 tends to swing the shutter into its closed position under the shutter-seat 7.

At its inner end the rock-shaft 56 is furnished with a crank-arm 63 connected with the lower end of a long link 64 the upper end of which is attached to a rock-arm 65 mounted upon a rock-shaft 66 the ends of which are journaled in a flue-pipe fitting 67 inserted into the upper rear corner of the cooking compartment 5. The said rockshaft 66 is provided with a finger 68 engaging with a bail 69 connected with the damper or closure 52 for raising and lowering the same with respect to the egress draft-passage 53 which is formed in a damper-seat casting 70 set into the said corner of the compartment 5. A housing 71 set over the casting 70 contains the damper or closure 53 and the bail 69 thereof.

For automatically controlling the action of the shutter 6 and damper 52 in closing the ingress and egress draft-passages 9 and 53 respectively, and in draining the annular wiclcchamber 33, I connect the upper end of the upstanding lever 50 with-the rear end of a link 72 the forward end of which is pivoted to the rear end of a latch-rod 73 .sliding in a rearwardly extending sleeve 74 cast integral with the base 75 of the case 76 of a timing-mechanism, which may be of any approved construction, but which, as herein shown, follows the general construction of the timing-mcchanism shown and described in my co-peuding application No. 782,445, liled August 1, 1913, fliming mechanism. Reference being had to my co-pending application, it will be unnecessary to give a detailed description of the said timing-mechanism, which, as far as shown herein, is provided with a setting-lever 77 mounted upon the projecting front end of an arbor 73 and formed at its upper end with a pointer 79 sweeping over a. graduated dial 30 applied to the front of the case 76. The said arbor 78 carries a timingdisk 8 1 having a timing-slot 32 receiving a timing-pin 33 mounted in a lever 34 hung on a pin 85 and furnished at its opposite end with a handle 86 extending through a segmental slot 37 in the case 76. The lower end of the setting-lever 77 is furnished with a handle 88. The said lever 8-1 is connected by a depending link 89 with a latch-lever 90 hung upon a pin 91, furnished at its outer end with a projecting forestalling handle 92 and having its inner end provided with a lug 93 entering a notch 91 in the extreme forward end of the sliding latch-rod 73. The base 75, aforesaid, is furnished with a depending bracket 95 fastened to the left hand side of the compartment 5 for the support of the timing-mechanism. The link 72 as well as the projecting rear end of the latch-rod 73, is encircled by a helical spring 96 adjusted in tension by a nut 97 on the said link and providing the power required for closing the shutter 6 and the damper 52, and insuring the descent of the tank- 1 into position to effect the drainage of the wick-chamber The burner-base 2 (Fig. 7) is formed, as described, with an annular wick-chamber 33 receiving an annular wick 98 supported above the bottom of the chamber 33 by means of pins 99 upon Which'its lower edge rests, the said chamber 33 being enough wider than the thickness of the wick 98 to permit the oil to freely flood into and drain from it. For the draining of the chamber 33 its bottom as shown at 100 in Fig.7 is inclined toward the lug 28 depending from the burner-base 2 and containing an oilpassage 101 receiving the gland 27 of the swivel 26. (Fig. 4.) The said wick-chamber 33 is intercepted by a pilot-light tube 102 the lower end of which extends downward in the lug 28 to intersect the passage 101, the extreme lower end of the tube being furnished with slots 103 whereby oil is constantly fed to the pilot-light wick 104.

When the tank 4 is maintained in its elevated or feeding position by the entrance of the lug 93 into the notch 94 of the latchrod- 73, the oil will rise in the chamber 33 to the height of the broken line 105 which represents the normal burning level of the oil. In order to provide for temporarily into the feed-cup raising this level to quickly saturate that portion of the wick lying above the said line 105, I provide for an excess of downward movement in the operating-lever 47, whereby the tank 4 is lifted high enough to flood the wick to the upper edge thereof. This excess or initial lighting movement of the lever 47 is regulated by means of an ad justable nut 106 upon the lifting-rod 34. When the said rod 34 is lifted to the limit of the lighting movement of the lever 47, the nut 106 engages with the collar 12 as shown by broken lines in Fig. 6.

As herein shown the removable cylindrical oil-tank 4 is supported in cradle-like clips 107 fastened to bracket-arms 108 attached to arms 109 cast integral with the feed-cup base 30. For feeding oil from the tank 4 into the cup 31, the neck 32 (Fig. 9) is furnished with a removable cap 110 provided with a valve seat 111 coacting with a valve 112 mounted upon a stem 113-having bearing in a valve-chamber 114 formed with inlets 115 and fastened to the inner face of the cap 110 with which it is concentric .A spring 116 encircling the rod 113 provides for seating the valve 112 upon its seat 111 when the tank is removed from the apparatus, as for being refilled. When the tank is returned to place in the clips 107, the engagement of the valve-stem 113 with the bottom of the cup-base 30 lifts the valve 112 above its seat 111 against the tension of the spring 116. I do not, how ever, limit myself to any particular valvemechanism for feeding oil from the tank 4 I wish to call particular attention to that feature of my invention by which the burner and oil-tank are mounted so as to swing together on a common center in a plane below the plane of the cooking compartment 5 so as to permit the burner to be'brought into an accessible position in front of the apparatus where it may be readily taken apart and cleaned. By arranging to have the tank swing with the burner, flexible connection between the two parts is limited to the swivel 26 which permits the tank to be raised and lowered with respect to the burner for flooding and draining the wickchamber 33 thereof. By providing for the excess elevation, as described, of the tank at the time of lighting the burner, I am enabled to at once saturate the entire wick so that it may be readily'lighted. Without this excess movement of the tank, the lights ing of the wick would be delayed by the time required for the upper portion of the wick to become saturated with the oil at the normal burning-level represented by the line 105.

In using my improved apparatus, the setting-lever 77 is first operated to set the timing-mechanism, this being a condition tion (Fig. 1)

chamber 33 is drained to the level of the partment 5 is furnished'with precedent to holding the shutter 6 and damper 52 in their open positions as well as a condition precedent to supporting the .pressed (as shown by broken lines in Fig.

6) until stopped by the engagement of the nut 106 on the rod 34 with the collar 12 (Fig. 6), whereby the tank 4 is lifted to the height required to cause the level of oil in the chamber 33 to rise to the upper edge of the wick 98. The shutter 6 and damper 52 also partake of this excess movement, but without effecting anything. Downward pressure of the hand being now removed from the lever 47, the same returns to its normal or burning position (as shown by full lines in Fig. 6) in which the tank 4 is suspended in position to maintain the level of oil in the burner at the line 105 by the entrance of the lug 93'into the notch 94 of the latch-rod 73. At the end of the period. to which the timing-mechanism was set, the reverse rotation of the timing-disk 81 will register its timing-slot 82 with the timing-pin 83 whereupon the spring 117 (Fig. 1) will smartly lift the lever 84, the link 89 and the latch 90. The lug 93 will thus be lifted out of the notch 94 and give the spring 96 an opportunity to act through the upstanding lever 50 and the parts connected therewith, in closing the shutter 6 and damper 52, and hence the ingress and egress passages 9 and 53. At the same timethe tank 4 descends into its depressed posiin which the oil in the wickpassage 104, whereby the wick 98 is extinguished without withdrawing the supply of oil from the pilot-light tube 104. The double-walled cooking compartmenthaving thus been raised to a high temperature, as well as the food contained in it, the cooking of the food proceeds slowlyuntil the heat thus char ed into the apparatus has been lost by ra iation. As shown, the coma large door 118 having hinges 119 and a handle 120.

As herein shown, my improved cooking apparatus is provided upon its left hand side with a non-automatic cooking-extension comprising a frame 121 supported upon legs 122 corresponding to the legs 123 upon which the cooking-compartment 5 is mounted. The said cooking-extension is convenient though not necessary accessory adjunct to the main apparatus.

The extension-frame 121 is furnished with two ordinary grids 124 respectively located over burner-casings 125 supported upon burner- bases 126 and 127. The said burnerbase 126 is connected by a short feed-tube 128 with a passage 129 in the lower end of a depending bracket 130 with" which a long feed-tube 131 has swivel connection at 132. ()n the other hand, the burner-base 127 is connected by a short feed-tube 133 with a passage 13-1 also formed in the bracket 130, but not comnnmicating with the passage 129 aforesaid. The said passage 13-1 has swivel connection at 135 with a long feed-tube 136 corresponding to the feed-tube 131 and parallel therewith. The tube 131 is entered at its outer end into the base 137 of an oil feed-cup 138 receiving a removable oil-tank 139 generally corresponding to the tank 1, while the tube 136 carries a base 110 supporting a feed-cup 1-11 receiving an oil-tank 112 corresponding to the tank 1. The tanks 139 and 112 are manually raised and lowered for flooding or draining. as the case may be, the wick-chambers of. the burner- bases 126 and 127. For this purpose, I employ a rock-shaft 1-13 furnished at its outer end with a hand-lever 1-1-1 and at its inner end with a crank arm 115 furnished with a link 116 connected with the feed-tube 136 which is raised and lowered, and hence the tank 112 by turning the hand-lever 111 as desired, according to directions on an index plate 117. A hand lever 118 is mounted upon the outer end of a rock. shaft 119 furnished at its rear end with a rock-arm 150 connected by a link 151 with the feed tube 131, which Figs. 10 and 11, the tanks 139 and 1-12 have been replaced by a single tank 152 formed at its ends with circumferential grooves 153 receiving the arms of cradles 15-1 applied to the feed cups 138 and111 which receive necks 155, 155, located at the ends of the tank 152 and are furnished with oil-feeding mechanism corresponding to the feeding mechanism shown in Fig. 9. In- Fig. 10, however, only the valve-stems 113 of these feeding mechanisms are shown. The arms of the cradles 15-1 enter the circumferential grooves 153 with 'sufiicient play to permit the tank to be tilted in one direction or the other for feeding the oil to one or the other of the two burner- bases 126 and 127. Ifit is desired to feed oil to bot-h of the burnerbases 126 and 127, both of the hand-levers 141 and 1-17 are operated for lifting the tank 152 into the position in which it is shown by broken lines in Fig. 10. On the other hand, if it is desired to feed oil to one of the burner-bases to the exclusion of the other, the tank is appropriately tilted as shown by full lines in Fig. 10.

I claim 1. In a liquid fuel automatic cooking apparatus, the combination with a cooking compartment having an ingress draft-passage, of a burner and an oil-tank mounted to swing upon a connnon center to permit.

the burner to be positioned for cleaning, means for manually lifting the oil-tank to raise the level of oil in the burner, and

means for autoimitically controlling the' automatic means for controlling the closing of the closure and the lowering of the tank.

3. In an automatic liquid fuel cooking apparatus, the combination with a cooking compartment having an ingress draft-passage, of a burner and an oil-tank arranged to swing upon a common center to permit the burner to be positioned for cleaning, means for manually lifting the oil-tank with an initial excess of upward movement to facilitate lightin the burner after which the oil-tank takes its normal position for supplying the burner with oil, and automatically controlled means for lowering the tank to extinguish the burner.

1. In an automatic liquid fuel cooking apparatus, the combination with a cooking compartment having ingress and egress draft-passages, of closures for the said passages, a burner and an oil-tank hung upon a common center to permit the burner to be positioned for cleaning, means for manually opening the said closures and lifting the oil-tank into position for feeding the burner, and automatically controlled means for concurrently closing the said closures and lowering the oil-tank.

5. In an automatic liquid fuel cooking apparatus, the combination with a cooking compartment having an ingress draft-passage, of a burner and an oil-tank arranged to swing upon a common center to permit the burner to be positioned for cleaning, means for locking the'burner in position below the said ingress draft-passage, means for manually lifting the oil-tank into its feeding position, and means for automatically controlling the lowering of the tank into position for extinguishing the burner.

6. In an automatic liquid fuel cooking apparatus, the combination with a cooking compartment having an ingress draft-passage, of a closure for the said ingress draftpassage, a burner and an oil-tank arranged to swing upon a common center to permit the burner to be positioned for cleaning, a feed-tube extending between the said tank and burner and having swivel connection with the latter, means for manually closing the said closure and lifting the tank into its feeding position, and means for automatically closing the closure and the lowering of the tank. I

7. In an automatic liquid fuel cooking apparatus, the combination with a cooking compartment having an ingress draft-pa sage, of a closure therefor, a burner and an oil-tank connected together, a. tubular swivel for the said burner and tank whereby the In testimony whereof, I have signed this specification in the presence of two sub- SCIlblIlg witnesses.

ROSS M. G. PHILLIPS.

Witnesses:

M. P. NICHOLS,. C. L. WEED.

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