US3195986A

US3195986A - Resiliently mounted candle burner

Info

Publication number: US3195986A
Application number: US285986A
Authority: US
Inventors: Floyd G Mann
Original assignee: Scott Aviation Inc
Current assignee: Scott Technologies Inc; Avox Systems Inc
Priority date: 1963-06-06
Filing date: 1963-06-06
Publication date: 1965-07-20
Anticipated expiration: 1982-07-20

Description

July 20, 1965 F. G. MANN 3,195,986

' RESILIENTLY MOUNTED CANDLE BURNER Filed June 6, 1963 2 Sheets-Sheet 1 FIG. l

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United States Patent O 3,195,986 RESIUENTLY MUNTED CANDLE BURNER Floyd G. Mann, Harmony, Pa., assigner, by mesne assignments, to Scott Aviation Corporation, Lancaster, NSY., a corporation of New York Filed dune 6, 1963, Ser. No. 285,936 2 Claims. (Qi. 23-281) This invention is a novel candle burner apparatus for holding a candle and recovering gaseous products from the candle for delivery to a remote point of use. The candle hoider is of special utility in the burning of a sodium chlorate candle to produce oxygen; such candles are of value in providing oxygen in coniined spaces such as submarines and underground compartments in times of emergency.

A number of limitations and deciencies have appeared in prior art apparatus designed for this or similar purposes. The apparatus of U.S. Patent 2,983,588 sets out to cure a number of these der'iciencies, but it has been found that the patented apparatus requires an eX- tensive period of time for replacement of ya candle and reassembly of the apparatus, to a great extent because of the need to balance out the pressures created by the four springs which hold the combustion chamber closed. In this invention a resilient rnountiuU is provided for the combustion canister by the use of only two springs. Also, in this invention a rigid mounting of the oxygen withdrawal mechanism provides for elimination of the exible tubing required in the previous device, thereby decreasing the cost of the device while increasing the ruggedeness.

in this invention the candle-holding canister is mounted resiliently in a frame, the canister being supported by a brace which pivots on spring biased rods. The brace is placed some distance above the bottom fof .the trame. The side of the brace opposite the pivot is adjustably supported by rods which connect to a lever mechanism generally near the top of the frame. By operation of the lever mechanism the .canister can be raised or lowered enough to allow the top of the canister to be swung out of the frame into an inclined position to receive a sodium chlorate `or other candle, or into a lower inclined position to permit a candle to slide out of the can.

A cover for the can is rigidly mounted at the top of the frame. Extending through the cover is an opening connected with an oxygen or other product gas outlet conduit. One or more iilters usually are supported by the frame and the product gas outlet conduit may pass to this filter arrangement. The cover also is provided with a hole for insertion of igniting means within the closed can. This means preferably includes a rod that may be slidably and rotatably mounted in the hole and has a phosphorus or other pyrogenic coating at its lower end.

The invention will be better understood by reference to the accompanying drawings, in which FlGURE l is a side elevational view of the candle holder showing the canister in position A, the operating position, and, in phantom lines, the canister in position B, the refill position, and position C, the dump position;

FlGURE 2 is a top View of the device;

FIGURE 3 is a front view, with the ilter housing partly cut away;

FIGURE 4 is a detail along the line 4 4 of FIGURE 1; and

FIGURE 5 is a cross-sectional lview along the line 5-5 ot FIGURE l.

in the drawings, the canister 1l is shown as having a square cross-section, but the canister may be of cylindri- 3,195,986 Patented July 20, 1965 cal or any other desired elongated shape. The canister may contain means, not shown, for upright positioning of the candle to be inserted therein. The cylinder is usually made of metal, lined with refractory material, if desired, or otherwise made of materials suitable for Withstanding the heat and pressures involved in operating. Welded or otherwise fastened to the bottom 13 of the canister 11 is a swing means, for example the rod 15, which is cradled by the brace, indicated generally as 18. The brace 18 suitably comprises a cross-member 20 which, in the preferred embodiment shown, is a trough, supported at the mid-points of

side members

22 and 25.

The brace and the canister are held within the frame, indicated generally as 27. The trarne preferably is constructed of U-shaped channel stock, providing a more or less square top frame 3b which may be eX- tended somewhat to provide a protective enclosure 33-for the filter housing 36. The bottom frame 39 may be extended to provide the stabilizing member 42. The frame is provided with front legs and with rear legs 48. Within each two front legs 4S are the rods 5d. At their upper ends, these rods are attached to the lever mechanism indicated generally as 52. This mechanism may be constructed of elements well known to the art. As illustrated, the lever mechanism comprises the lever rod d5 connected by means ot the block 53 to the yoke rod et? which, in turn has, at either end, a rigid link 63, each of which supports a rod Sti by means of pin 66. The yoke rod 6d is supported by the sleeves 63 fastened to the front of top brace 39. At their lower ends, the rods support the front ends of side members 2.2 and 2S of the brace l.

rl`he rear ends of Side members 22 and Z5 are fastened, for example, by means of pins, to the lower ends of bolts 7d, the opposite ends 72 of which are threadedly engaged with internally threaded sleeves 75, Each of these sleeves has the lower enlarged portion 73 which is provided with the holes t) for insertion of a tool for rotating the sleeve, thereby raising or lowering the bolt 7i) and the

side members

22 and 25 of the brace l5. The lower end of bolt 'itl is journaled within the lower guide 82 and the sleeve '75 is journaled within the upper guide 84. The spring 36 is placed between enlarged portion '78 and lower guide 32. Thus die trough Ztl of brace 18 is supported by

side members

22 and 25 which are supported at one of their front ends by the rods 50 and at the rear by the rods 7&9. The rods 75l, in turn are supported by the lower guide 32; by means of the spring 86 and the enlarged portion 78 oi the sleeve '75.

Rigidly mounted to the top frame 3i) is the canister cover SS. This cover is shown as square, but may be of other congurations when desired. Between the cover 8S and the canister 1l is a gasket 9@ which is of a shape and resilience suitable for providing a gas-tight connection between the canister and the cover. Thus, the gasket and the Canister generally have a coordinated shape while the dat underside of the cover is suitable for covering any shape canister. The cover 8S is provided with an outlet hole to which outlet duct 93 is connected. This duct may lead by any suitable means, for example, the littings 96 and 9@ and rigid pipe lill to the iter 103 and pipe 16S which leads to the place of use of the gas generated in the cannister, for example, the ventilation system of a submarine. The filter is held Within the housing 36 by any suitable means, for example the bolt and nut arrangement 167. The cover 58 is generally provided also with the entry hole )109 for an ignition device. The canister generally is supplied with handles 111 and either the cover, as shown, or lthe canister may be equipped with the gauge 113.

The device is usually equipped with the lchain 115 for support of the canister in the reiill or B position. The operation and potential of the device is best shown by a situation wherein a candle has finished its oxygen generatioi and is to be replaced by a candle o f a different Weight. The' lever 55 is raised, lowering the front rods 50 and the front ofy brace 18; This allows enough clearance at the top of the canister' so thatrloosening the chain 115 and pulling forwarda handle 111 allows the rod 15 to fulcrum in the trough 20. Canister 11 may thereby be lowered to the C position resting on a handle in which position any debris from the previous candle may be removed. The -'canister may then be raised to the B or retill position and the chain 115 attached to support the canister in this position. The fresh candle is inserted and, when a lighter candle is used lthan previously, enlarged portion 78 is rotated to lessen the pressure on the spring S6. The canister is then raised to the upright A position and the lever 55 is lowered. The enlarged portion 78 is then turned to adjust the pressure on the spring 36 to insure a tight iitbetween thecanister 11 and the gasket 90. The ignition device is inserted through the hole 109 and the gas generation is begun. It will be seen that an abnormal increase in 'gas pressure within the canister due, for example, toA clogging of the lilter 103 with condensed sodium chloride, Willrelieve itself harmlessly by downward pressure against the resiliently mounted brace 18 to an extent sufficient for the gas to escape between the canister andthe cover, perhaps even giving an audible hiss.

It will thus be seen that the device of this invention provides a gas generator of particularly rugged construction and capable of very easy adjustment to varying weights of charge, as-well as rigidrn'ounti'ng to the piping system for the generated gas.

It is claimed:

1. A device for recovering gaseous products which comprises a canister having a bottom and a top, said bottom being mounted on a brace having a front end and a back end, said top of the canister being connectable in gastight engagement with a cover rigidly mounted on a rigid frame, said cover having a gas outlet, said brace being pivotally suspended on said rigid frame at one of said ends by resilient support means and at the other of said ends by rigid support means, the resilience of the resilient support means being adjustable.

2. The device of claim 1 in which the said gas outlet has rigid conduit means leaidng to a lter.

References Cited by the Examiner UNITED STATES PATENTS 2,983,588 5/61 Bovard 23-281 MORRTS O. WOLK, Primary Examiner.

JAMES H. TAYMAN, JR., Examiner.

Claims

1. A DEVICE FOR RECOVERING GASEOUS PRODUCTS WHICH COMPRISES A CANISTER HAVING A BOTTOM AND A TOP, SAID BOTTOM BEING MOUNTED ON A BRACE HAVING A FRONT END AND A BACK END, SAID TOP OF THE CANISTER BEING CONNECTABLE IN GASTIGHT ENGAGEMENT WITH A COVER RIGIDLY MOUNTED ON A RIGID FRAME, SAID COVER HAVING A GAS OUTLET, SAID BRACE BEING