US1580613A

US1580613A - Liquid-air candle

Info

Publication number: US1580613A
Application number: US746966A
Authority: US
Inventors: Story B Ladd
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-10-31
Filing date: 1924-10-31
Publication date: 1926-04-13
Anticipated expiration: 1943-04-13

Description

April 13 1826.

S. B. LADD LIQUID AIR CANDLE 1924 3 Sheets-Sheet 1 Filed Oct. 31

abtozwm April 13 1926.

S. B. LADD LIQUID AIR CANDLE Filed Oct. 51 1924 3 Sheets-Shoot 2 I gwue'nto'o STo/J Laad April 13,1926. 1,580,613 s. B. LADD LIQUID AIR CANDLE Filed Oct. 31 1924 5 Sheets-Sheet 5 5730/ b. Lam 0L i merited Amt l 1-926?- UNITED PATENTOFFICE.

STORY LADD, OF WASHINGTON, DISTRICT OF COLUMBIA.

LIQUID-m canons.

Application filed October 31, 1924. Serial No. 746,966.

To all whomz't may concern:

Be it known that 1, STORY B. LADD, citizen of the United States, residing at Washington, District ofColumbia, have invented certain new and useful Improvements 1n Liquid-Air-Candles, of which the following is a specification. I

The present'dnvention relates cooling devices and particularly to a liquid air or gas cooling device.

An object ofthe invention is to provide a liquid air or gas container having means associated'therewith for conserving the supply of liquid air or gas therein.

Another object of the invention is to provide a liquid air or gascontainer having an evaporating surface associated therewith.

A further" object of the invention is to provide a liquid air or gas container .having an evaporating surface in capillary communication with the interior of said container and which is adapted to protrude therefrom, with means for regulating the extent to which said evaporating surface protrudes. Still further objects of the invention are to provide a container and evaporating surface of the character stated, with means for covering and exposing said evaporating surface, and means for exposing said surface and creating a current of air or gas -there-' across.

Other objects and advantages of the invention will appear in the following detailed description thereof, taken inconnec: tion with the accompanying drawings, which illustrate by way of example, a preferred embodiment thereof, but which are not to be taken as a definition of the limits of the invention, reference being had to the appended claims for that purpose.

In the drawings Fig. 1 is a vertical sectional view through a container and evaporating surface embodyin g the present invention;

Fig. 2 is a horizontal section taken on the line 2-2 of Fig. 1;

F ig. 3 is a vertical sectional view through a cabinet containing a preferred form of container and evaporating surface associated with means for setting in motion the air or gas evaporating therefrom;

Fig. 4 is a horizontal sectional View taken on the line 4-4 of Fig. 3; v v

Fig. 5 is a detail view showing the controlling device.

Fig. 6 is a top plan view'of a modified form of liquid air or gas candle embodying the present invention.

Fig. 7 is a side elevation thereof.

Referring in detail to the drawings, a container 9 is rovided with an interior portion 10, adapted thereof to permit escape of evaporated air or gas. The openings 11 form a communicating medium between the interior of thecontainer, and a chamber 12 formed by the

concentric walls

13 and 14. At the bottom of the wall 14 is an opening 15, forming a communicating means between the chamber 12 and the space 16. The space or chamber 16 is in communication with the atmosphere 1 through a series of openings 17, preferablyprovided near the top thereof.

A vacuum or other insulating chamber 18 may surround the container.

t its top the container 9 is formed with a neck 19, which is internally screw-threaded for the reception of an externally screwthreaded closing member 20, which is pro-' protrudes above the closure member 20 and; in the drawings is illustrated as having the form of a wire 22 extendingthrough'the closure member 20 and gripping the Wick 21 at its upper and lower ends 23 and 24, which are shown as encircling said wick. A loop 25 may be formed intermediate the ends of the raising and lowering member 22 to-form a convenient handle therefor. The closure member 20 maybe formed hollow and filled with insulating packing material, as shown.

The container 9 may be formed with a lug 26, adapted to receive a hinge pin 27, upon which the top 28 of the container is shown as being mounted. The top is preferably formed with an interior opening 29 and exterior openings 30, and has the intermediate wall 31 therein to provide a tortuous passage forthe escape of evaporated air or gas.

Referring now to Figs. 3, 4 and 5, a cabi- The memberto contain liquid air or gas. A i series of openings 11 are provided at the top net 41 is provided with openings 42 and 43, through which a current of air is adapted .to be drawn intothe cabinet and expelled therefrom. Each of these openings is preferably provided with any desired form of screen 44. The container 9 is placed within the cabinet 41 and is retained in position therein by means of flanges 45 on the floor of the cablnet.

A fan 46 and fan motor 47, or other means for creating a current of air or gas, are mounted within the cabinet 41. The fan is controlled by a switch 50, which preferably takes the form of a rheostat having a plurality of stationary contact members 51, and a pivoted arm 52 having the movable contact member 53. v

Slidably mounted in one of the cabinet walls is a controlling member 56, which is illustrated as having the form of a rod provided at its outer end with a knob 57 or other convenient form for manual operation. At its inner end the rod 56 is bent at right angles, as shown at 58, and extends into and through a longitudinal slot 59, formed in the cap controlling arm 60, which 1s fixedly mounted on an extension of the hinge pm 27, upon which the cap is fixed. The member 60 is thus adapted to act as a, lever for opening and closing the container as the rod 56 is moved outwardly or inwardly respectively. The rod 56 is provided with a collar 65, which is secured thereto by a set screw 66, the head of which extends through a slot 67 in the movable contact arm 52.

In operating the device, assuming the fan switch to be opened and the container top be closed, the controlling rod 56 is pulled outwardly, thus opening the top of the container and exposing the evaporating surface, and at the same time closing the fan circuit, thus creating a current of air or gas across the evaporating surface and setting in motion the cold air or gas which evaporates therefrom.

Referring now to that embodiment of the invention illustrated in Figs. 6 and 7, the container-'69 is preferably constructed with the same or a similar internal arrangement as the container shown in Fig. 1, but is made with a larger top 70, which may, if desired,

7 be formed flat and provided with a plurality of outlet or exhaust openings 71 to permit escape of evaporated an or gas from the interior of the container. The container in this embodiment of the invention is preferably provided with lugs 72, with which a bail 73, having a handle'member 74, is associated forconveniently transporting the container. A neck 75 may be provided in the top of the container, through which a filling opening extends,said openingbeing closed by the closure member 76.

A plurality of dome-shaped candle closures 77 may be provided similar to the cap shown in Fig. 1, and hingedly mounted through lugs 78, provided in the top of the container.

lVithin the dome-shaped caps 77 are mounted wicks or equivalent members similar, preferably tothe wick member 21, here' inabove referred to, and the caps are provided with exhaust openings 79, as before. This embodiment of the invention is particularly adapted for refrigeration purposes,

having a plurality of evaporating surfaces, whereby its efficiency is increased.

It will be seen thata device is thus provided whose liquid air or gas supply may be replenished from time to time by removing the container 9 and inserting a full container, and that the body of liquid air or gas is conserved as much as possible by the tortuous outlet of evaporated air or gas, which helps to keep cool the liquid. air or gas. The evaporation of liquid air or gas from the evaporating surface is decreased when the top is closed and increased when the top is open and the evaporating surface is exposed to the outside atmosphere.

What is claimed is 1; A liquid air container having an evaporating surface in capillary communication with its interior.

2. A liquid air candle comprising a container, an evaporating surface associated therewith and in capillary communication with the interior thereof, and means for regulating the extent to which said surface protrudes therefrom.

3. A liquid air candle comprisinga container, an evaporating surface in capillary communication with the interior thereof, and means for covering and exposing said evaporating surface.

- Intestimony whereof I afiix my signature.

sToRY B. LADD.