US2496304A - Bottle cooling and dispensing refrigerator - Google Patents

Description

Ffih 7,, HO MUFFLY A9 BOTTLE COOLING AND DISPENSING REFRIGERATOR Filed May 2, 1944 2 Sheets-Sheet l 7 INVENTOR. 62%? Ma #1 52 fi 7 To ENE V6.

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BOTTLE COOLING AND DISPENSING REFRIGERATOR 2 Sheets-Sheet 2 Filed May 2, 1944 75 1Q 52 /75 270 up M w; l Z z i Patented Feb. 7, 1950 BOTTLE COOLING AND DISPENSING REFRIGERATOR Glenn Muflly, Springfield, Ohio Application May 2, 1944, Serial No. 533,778

Claims.

This application is a continuation in part of my co-pending application, Serial Number 324,466, filed March 18, 1M0, now abandoned. The invention relates to refrigerating mechanism and particularly to the application of a refrigerating system to bottle coolers, and in general to the type of apparatus used for cooling foods and drinks in containers.

The ice making principle and control methods covered in my issued Patents Nos. 2,145,773, 2,145,774, 2,145,775, and 2,145,777, are employed herein and reference is made to these issued patents, to divisions thereof and to my pending application, Serial Number 237,629, filed October 29, 1938, now Patent No. 2,359,780, dated Oct. 10. 1944, for more complete discriptions of certain ice making and control features mentioned in the present application.

An object of this invention is to provide a bottled beverage cooler with an emergency capacity beyond that of the refrigerating machine which cools it, such excess capacity being available for quickly cooling 3. large number of bottles which may be put into the cooler at one time.

Another object of this invention is to provide means for making the cooling effect of an accumulated supply of ice quickly available for handling the peak loads above mentioned.

Another object of this invention is to provide means for storing a large supply of ice in small pieces for the COOIll'lg of bottled beverages or other products without allowing such ice to interfere with the placing of bottles or other containers in the cabinet.

Still another object is to provide means for circulating water through the stored ice, then into heat exchange with the containers to be cooled and then baclr through the ice to provide rapid heat transfer from such containers to the ice.

A further object is to provide thermostatic control means for the water circulating means that provides this rapid heat transfer.

Another object is to provide a sectional type of bottle cooler adapted for use in multiple to vend various flavors or varieties of drinks and accommodate a maximum stock of goods in a minimum of floor area.

An additional object is to provide a dry compartment for storage of products to be cooled and at the same time to retain the holdover effect of the floating ice.

Still another object is to provide means for drying containers after they have been wetted in cooling.

An additional object is to provide coin actuated vendin means for the sale of the products cooled, this means being operable either manually or by power means.

Another object is to provide means for coolins the chutes on which containers are stored.

With these and other objects in view, I describe my invention by referring to the drawings, in which similar reference characters refer to similar parts.

Figure 1 is a diagram of the refrigerating system and thermostatic controls adapted for use in connection with the other figures.

Figure 2 is a vertical sectional view of a bottle cooler, showing gravity and power means for moving bottles into and out of the coolin zone, which may be either wet or dry, and further showing a coin actuated, power driven vending mechanism.

Figure 3 is a vertical section of Fig. 2, taken on the line il--t thereof.

Figure 4 is a vertical sectional view of a modifled form of the cooler shown in Fig. 2, illustrating a manually operated vending mechanism.

Referring to Fig. l, the motor-compressor unit it draws vaporized refrigerant from the tube it and delivers compressed vapor through the tube ii to the condenser it, from which the liquefied refrigerant passes through the capillary tube M and the second capillary tube M, the latter being preferably embedded in the insulation and leading to the coils Mil and Hi seen in Fig. 2.

The fan is and its driving motor Ml are pro vided for cooling the condenser it. A bulb Mi is located as in Fig. 2 for the purpose of controlling the circulation of water and it is connected to a thermostatic switch it to control the opera tion of the motor 52 in Fig. 2. The result is that water is forced to flow through the ice and then into heat exchange with or over the bottles to cool them. The wiring diagram of Fig. 2 will be understood by referring to Fig. l.

The bulb 86, which is seen in Figs. 1 and 2, is connected with a thermostatic switch t'l, (Fig. l.) to control the operation of the motor compressor unit 76 and may have a starting circuit breaker 88 connected with it. Both the bulb t5 and the bulb 86 are located in the cabinet, but at different points to control different motors for different purposes. The bulb 46 and its switch it initiate water circulation whenever it is required to lower the temperature of the bottles in the upper part of the cabinet. The bulb 86 and its switch 81 control the starting and stopping of the refrigerating system, starting the system when the supply of floating ice diminishes so that it does not contact the bulb 86. The compressor then runs continuously while the evaporators H0 and I i I are alternately refrigerated, making and releasing ice until there has been accumulated an amount of floating ice such that the lower pieces of floating ice contact and partially surround the bulb 86 to cool it down to the cut-out point of the Switch 81.

In Fig. 2 the evaporator coil IIII is shown associated with the bottom of the tank I16, while the evaporator coil III is associated with side walls of this same tank. Optionally, the coil III might be associated with one-half of the tank bottom and with the sides adjacent thereto, while the coil III is associated with the other half of the tank bottom and with the side walls adjacent to this other half. In either case the operation is to refrigerate first the coil III! and then the coil II I, such alternate refrigeration being caused by alternately connecting the coils with the suc tion tube Id of Fig. l. The valve mechanism 22, indicated in Fig. 1, is preferably of a type disclosed in one of my issued patents above mentioned, or it may, for example, be a mechanism such as is shown in Figs. 9, l and 11 of my copending application, Serial No. 237,629, filed October 29, 1938, now Patent No. 2,359,780, issued October 10, 1944.

This method of controlling the quantity of ice formed in a tank is explained in my co-pending applications above mentioned. The bulb 86 may be cooled down to the temperature of 32 F. by the floating ice when there is ice at and below its level, but when the ice supply is not sufiicient to reach downwardly to this bulb level, the temperature of the bulb will be higher than 32 F.

During idle periods of the motor 52 there will be a slow thermostatic circulation of water in the tank due to the fact of water having a reverse coeflicient of expansion between its freezing point and its maximum density temperature of 39.2 F. Water at any temperature between 32 F. and 46A F. is heavier than 32 water of the same purity. The water surrounding the bottles in Fig. 2 may be at 40 F. while the water immediately below the perforated wall IlI (Fig. 2) and between the disks of ice must necessarily be at 32 F. Since 32 water is lighter than 40 water there will be an upward circulation of the cold water from the body of ice.

The bottle cooler shown in Fig. 2 is arranged for power driven delivery of bottles, with a coin mechanism for starting the delivery mechanism. The cabinet I58 is. seen in vertical section, showing the rear wall I59 and the front wall I613. The rear wall I59 may be placed against the wall of a room in which the cabinet is located and access is had to the cabinet at its front and top.

The lid I6I is designed to be locked so as to protect the stock, the coin mechanism and the money that has been collected thereby. This lid is unlocked and lifted so that bottles 62 may be placed upon the chutes I62 and IE3. These bottles will roll over the series of such chutes and the first one will come to rest at the extreme right 'of chute I64 on the lift hook I11, which is attached to two chains I16. The shaft supporting the sprockets I19 is preferably so located that as the idle position is approached the hook I11 which is to receive the next bottle will still be inclined downwardly a bit to provide a wider gap for the bottle to roll into place. This gap is reduced as the hook leaves the sprockets I19 to travel straight up. Upon operation of the chains in the direction indicated by the arrows there will be a bottle on each of the hooks that are traveling in the upward direction and further movement of the chain will cause a bottle to roll out of the cabinet through the opening I80 onto the rack 224.

The chutes I63 and I64 are seen in more detail in Fig. 3 which is taken on the line 3-3 of Fig. 2. The chutes I62 and I63 are quite similar but of right and left hand as seen in Fig. 2. All of thesecabinet.

. I I chutes and the chute I66 are welded or otherwise attached to a vertical wall I69, Fig. 3 forming an assembly which is suitably supported in the There-may be any number of these assemblies, 'each with its own mechanical delivery mechanism, in the same cabinet. Ordinarily each such chute assembly and delivery mechanism is used for a difierent flavor or variety of bottled beverage and the cabinet may extend to whatever length is required, oflering a wide variety of drinks to the public so that a customer may drop a coin in whichever slot 2| I is marked with the brand or flavor he desires.

Each of the chutes I62 and I63 is provided with a flange I65 for welding to the wall I69 as a support and with an upturned outer flange I66, which is high enough to make contact with the .top of the cap of small bottle such as 62, yet low enough to pass under the neck of a larger bottle such as 64. The lowermost chute I64 has a flange I66 in line with the flanges I66 of the other chutes and is also provided with a higher flange I61 for limiting the horizontal movement of the longest bottles handled by the device. This flange I61 is positioned angularly as seen in section in Fig. 3 for its entire length except that at its lower end it is bent to a vertical plane to allow the passage of the tube 230 between it and the adjacent vertical wall I69 of the next chute assembly. The inclined portion is to prevent bottle caps from resting on the top of the flange when they drop from the next chute above and to align the taller bottles as they approach the end of their travel on the chute I64, so as to prevent them from hitting the pipe 239. The chute I64 also differs from chutes I62 and I63 in being provided with drip openings I68. These holes are punched in the metal in a manner to draw it downwardly, forming a slight collar around each hole so that water will be distributed over the ice instead of all being delivered at the end of the chute I64. These holes I68 are not necessary in the event that the water level is maintained at I15, but are useful when the water level is maintained below the perforated wall I1 I as indicated by the dotted line I15.

The lining of the cabinet I58 is in the form of a water-tight tank I10, the lower portion of which is equipped with evaporator coils H0 and I II for the making of ice as previously described. The tank is provided with a drain pipe 3I and valve 32. Below the bottle handling mechanism is a perforated wall I1I which serves to stop the upward flotation of ice as previously described in the event that water is placed in the tank up to a level higher than this wall. Some users may, however, prefer to keep the level as shown at I 15' by the dotted line or lower, in which case the shelf I1I could be omitted.

In any case the pump I13, driven by the motor 52, takes water from below the floating ice 8 and delivers it through pipe 51, the manifold 229, and the cooling coils 230 to discharge ports 23I. The cold water thus circulated serves to cool the air within the cabinet and the contents thereof, particularly those bottles which are located on the hooks I11 of the chains I16, and the water further serves to cool the bottles supported by the ice, thus insuring that the water passing upwardly through the pipe 5'! is not far above 32 F.

In the event that it is desired to cool the bottles entirely by air contact without wetting them the coil 230 may be extended to provide sufficient cooling surface for this purpose and instead of discharging water to now over the chutes the tube may be returned downwardly to bring the opening 23I below the level of the lowermost chute I84. One method of extending the coil 230 to provide more cooling surface is by forming loops as indicated at 232, extending horizontally between the chutes or metallically attached to the bottoms of the chutes themselves for more direct cooling of the bottles or other containers which roll over the chutes. Another alternative arrangement would be to use the coils 230 and 232 as the evaporator of a refrigerating system for direct cooling of the bottles or other containers, but this would sacrifice the advantage of the hold-over effect obtained through the use of floating ice and would necessitate a control setting to insure against freezing the contents of bottles.

Delivery of bottles is accomplished by means of the chains IIt on which are mounted a number of lift hooks Ill. The chains I are preferably used in pairs, a pair for each of the cabinet sections designed to hold a given flavor or variety of drink, each of the hooks I I1 being rigidly attached to one link of each of a pair of chains. Thus there are two sprockets I18 at the top of the chains and the two sprockets H9 at the bottom of the chains for each section of the cabinet.

The normal idle position of the chains I10 is as seen in Fig. 2 or a little lower, in position for a bottle to roll onto a hook II'I from the lower chute IISII. On the same shaft or sleeve with each pair of sprockets I18 is a larger sprocket wheel I82 for the chain I88 which is driven by the small sprocket I88. This small sprocket is mounted on the same shaft with the driven gear I81. this gear being driven by the pinion I88 on the shaft of the motor I89. Arranged to rotate with the gear IBI is the cam I 90 having a notch I9I. The electrical circuit for driving the motor I08 includes the wire i 90. going directly to the motor, and the line wire I95 leading to the screw IEII, which secures the spring I98 to its insulating support 200. The spring I98 is arranged so that it mav be caused to make contact with the contact 20L which is carried by the insulating block 2B2 on the spring 203. which is supported at I89. Attached to or made a Dart of the spring 208 is the pawl 200, which is located for engagement with the cam I90.

When the cam I90 rotates in a clock-wise direction it engages the pawl 208 and flexes the spring 208 until the contact 20I closes the electrical circuit through the spring I98. Since the contact MI is connected by means of wire 208 to the opposite pole of motor I89 the motor is thus energized to rotate the pinion I88, the gear I81, sprocket I88, chain I08, sprocket I82 and sprockets I78 which carry the chains I18.

Springs 208 and I98 are so formed and located that the contact 2'" is normallv spaced a bit from the spring I90, thus preventing the motor I89 from being energized except when spring I90 or spring 208 is flexed by some means. The starting of motor I89 is accomplished by flexing spring I98 through the insertion of a coin 2 I0 in the slot 2i I. A coin so inserted passes down through the chute 2 I2 which is shaped to provide a tortuous path to form a means of theft prevention. After the coin has passed through such a theft prevention means such as the chute 224 of Fig. 4, it comes to rest between the spring I88 and the insulated movable wall member 2, which is retained in position by the connecting rod 2 I B joining it with the pawl 208.

As the coin comes to rest between the member 2 and the spring I it is wedged between them due to their small relative angle, flexing the spring I98 until it makes contact with 20I, thus starting the motor I88 and moving the chains I18 in the direction indicated, at the same time rotating cam I until it lifts the pawl 204, flexing the spring 203. The flexing of the spring 203 by the cam is sufficient to insure contact by 20I on spring I98 in the unstressed position of the latter before the coin is allowed to drop to the receptacle, 220. After the spring 203 has been flexed enough to insure continuing of the contact between 20I and I98 the movable wall 2I4 will be moved to the right by connecting rod 2I8 far enough to allow the coin 2I0 to drop into the coin receptacle 220. The motor I89 continues to operate until the cam I90 has completed one full revolution, at which time the pawl 204 drops into the notch I 9I, breaking the contact between I98 and MI and stopping the motor I89.

The duration of the motor operation after insertion of each coin is thus one revolution of the gear I87, cam I90 and sprocket I84. number of teeth on sprocket I84 represents an angular movement of the sprockets I82 and I18, equivalent to the space on chains I16 from one of the hooks II! to the next one, thus the stopping position of one hook will be identical with the starting position of the hook next above and one additional bottle will have rolled from chute I84 onto a hook IT! and one bottle will have rolled from a hook I" onto the delivery rack 224, where it is accessible to the customer upon opening the door 223.

When there is a motor I09 and coin mechanism for each section of the cabinet the various coin receptacles 220 will provide a tally of the: number of bottles sold of each kind or flavor.

If desired, one or more of the cups 220 may be separately locked so that the coins received from sales of a certain flavor or variety of the drinks may be retained for use in paying rental charges, to apply on electric bills or for meeting time payments.

It will be noted that the bottle carriers I'I'I are designed so one blocks the opening above the sprockets I70 at the idle position while another one blocks the opening between these sprockets and the front insulated wall I60 of the cabinet. It is possible to eliminate the insulated door 223, which is shown closing the opening I80 by making the hooks III of insulating material with their bottoms or rear sides formed to replace the forked end I225 of rack 220. The insulated hooks replacing I'II will, as in Fig. 2, be attached to both chains but will pass closer to the walls so that two of them act as doors at each idle posiion.

For the purpose of servicing the pump I13 or of cleaning the tank I10 it may be desired to provide a hand hole closed by a gasketed cover 236, which is bolted in place and gasketed both to the tank I10 and to the outer wall of the cabinet.

This opening may be located in one of the end walls of the cabinet, or it may be dispensed with in case the handling mechanism is assembled in a unit structure which may be lifted out of the cabinet in its entirety, preferably carrying with it the insulated wall 222. The perforated wall The 7 HI and the pump I13 would in this case be parts of the removable assembly, the pump I13 and motor 52 being connected by means of a jaw clutch arrangement which is disconnected or engaged by merely lifting the pump I13 or by replacing it.

Control of the refrigerating system to regulate the amount of ice produced is obtained by means of the bulb 86 which is connected to the switch 61 as seen in Fig. 1. Control of the pump H8 is by means of the bulb 46 and switch 45, also as shown in Fig. l.

The chain lift device may be manually operated after release of the mechanism by means of a coin operated device if it is desired to economize on costs. In cases where a clerk is always in attendance to serve customers the coin mechanism may also be eliminated.

The enlarged sectional view seen in Fig. 4 shows a modification of the bottle delivery and coin operating mechanism seen in Fig. 2. In this modified arrangement the power for turning the sprockets H8 is supplied manually by means of the lever 24!. This lever carries the coin chute 243, including the return bend portion 244. A coin 210 is dropped into the upper open end of the chute 243 and comes to rest in the position shown, where it depresses the right hand end of the pawl 246 by overbalancing the weighted end 241 of this pawl. The pivot 248 on which the pawl is supported is mounted near the lower end of the lever 2M, which lever has a bearing on the shaft 250.

Also bearing on the shaft 250 there are a plurality of sleeves 252, each carrying two sprockets I18 and a four-tooth ratchet wheel 254. The weight of the coin 2m causes the pawl 246 to engage a notch in the ratchet wheel 254, thus connecting the lever 24l with the sprocket wheels 3778 so that when the lever 24!] is moved forward and downward to the position of 2% after coin has been inserted in the slot at the upper end of 253 the sprocket wheel will rotate to the right one quarter of a turn. This elevates one of the bottles 64 to a position directly above the shaft 250, where the bottle is free to roll to the right onto the delivery rack 224. As the lever approaches the position 2M the coin falls oil of the pawl 245 and is guided by the delivery guard 256 so that it falls into the coin receptacle 258.

It is planned that there will be a plurality of bottle delivery mechanisms. Each includes a lever 2M with the associated coin mechanism and each lever will be marked to indicate the flavor or variety of drink that will be obtained by the operation of this lever. In this manner a half dozen or more varieties of drinks may be vended from one cabinet in which there are an equal number of bottle handling conveyors, or a plurality of narrow cabinets, each having a single pair of gravity and chain conveyors, may be placed together against a wall with a different flavor of drink in each of the cabinets. Either with multiple mechanisms in one cabinet or with a lot of cabinets, each containing a single mechanism, it is possible to vend a variety of different drinks from a cabinet or cabinets occupying a relatively small floor space and accommodating a large number of bottles.

As the lever 24! is pulled forward (to the right in Fig. 4) it carries the pin 260 and moves the connecting rod 262 to the right. This rod is pivoted at 263 so that the movement of the lever causes the door 264 to open, allowing free passage for the bottle 64 which is to be delivered. After 244 and the guard 269 '75 positions.

delivery of the bottle the lever 2 is returned by means of the spring 266, which is anchored at one end of the cabinet and attached at its opposite end to lever 24!. The lever 24l comes to rest a bit to the left of its vertical position against the end of the slot 268, which is provided in the cabinet wall beyond the opening for door 264. At the vertical position of lever 24! the pawl 246 is ready for engagement with the next notch of ratchet wheel 254 as soon as another coin is dropped. Should the lever 2 be moved without a coin having been dropped there will be no movement of the ratchet wheel 254 because of the fact that the weighted end 241 holds the pawl out of engagement with the ratchet wheel. To prevent reverse movement of the ratchet wheel 254, sleeve 252 and the sprocket wheels I18, pawl 216 is mounted on a fixed pivot to engage a tooth of the ratchet wheel on its lowermost side. This pawl may for economy of production be a duplicate of the pawl 246, and the weighted end will move the point of the pawl into engagement with a notch in the ratchet wheel.

A sheet metal guard 212 is provided to separate the door opening through which bottles are delivered from the coin mechanism. This guard is shown broken away to disclose the coin mechanism. In practice it surrounds the shaft 250 and is formed with one of the slideways on which the coin drawer 251 slides. The shield 212 is at the right (far side) of each door 254 and a similar shield 214 is located at the left (near side) of the door opening, thus protecting the coin mechanism from the door opening at each side. Each of these shields 214 is formed with an angle at the bottom which provides one half of the slideway for the drawer 258. The guard 212 is provided with an arcuate slot 213 to accommodate the movement of pin 260. The slotted guard 212 as shown would have a bearing on the outside diameter of the sleeve 252, but the guard 214 which is located beyond the coin mechanism may support the shaft 250 directly. Since this shaft is not required to rotate there need be no bearing between the shaft and its supporting guard 214.

As a further means of theft prevention a semicircular strap of metal 269 may be attached to the lever 24! in position to close the slot 268 at all positions of the lever. The coin receptacle 258 is of such form and location as to allow a free passage for the lower end of-the guard 269 when the lever is brought down to its lowermost position.

In order to allow passage for the bottle carriers I11, the delivery rack is slotted as indicated at 225 forming fingers or prongs extending near enough to the chains I15 so that the bottles as they roll oif of the carriers will continue to roll onto the delivery rack 224 and will come to rest beyond the door opening in a position to clear the extremity of the door 264.

The coin receptacles are made accessible by means of small doors 259 which are arranged to be locked. The receptacle 258 is located between guards 212 and 214 and slidingly supported by them in line with the door 259. The section of cabinet wall seen in Fig. 4 is not all in. one plane, as the doors 259 are disposed in line with coin mechanisms while doors 264 are located between and above the doors 259 in line with the bottle delivery mechanisms.

The coin box 258 is so shaped and supported that there is clearance for the coin chute bend in their lowermost en ear The cabinet, of which only a part is seen in Fig. 4, is similar to I58 01 Fig. 2 and is equipped with the same cooling means and chutes ior bottles. A portion of the coil its is seen in Fig. 4.

Formal changes may be made in the specific embodiments of the invention described without departing from the spirit or substance of the broad invention, the scope of which is commensurate with the appended claims.

What I claim as new and desire to secure by United States Letters Patent is:

i. In a refrigerator adapted for the cooling oi containers, conveyor means for said containers comprising superimposed inclined chutes over which said containers pass in succession by gravity feed, fluid circulating means for delivering cold liquid so that it flows in heat exchange relationship with said containers first on one oi said chutes and then on another of said chutes, and means for cooling said liquid by freezing a portion of it and circulating the unfrozen portion of said liquid in contact with said frozen portion thereof.

2. In. a refrigerator, means for making ice in one portion thereof, means for circulating liquid into and out of contact with said ice and into cooling relationship with respect to a body to be cooled in another portion of said refrigerator, control means for said circulating means responsive to temperature changes of said refrig erator, and control means responsive to variations in the accumulated quantity of said ice to regulate said ice making means.

3. In a refrigerator for cooling a packaged product, an opening for loading said refrigerator with packages, on opening for delivery of said packages after cooling, conveying means for moving said packages step by step from the first to the second of said openings, means for cooling said packages during an intermediate portion their travel on said conveying means, the last said means including means for making ice and for circulating a fluid into heat exchange with said ice and with said packages, and control means for regulating the production of said ice to maintain the reserve supply of ice within minimum and maximum limits.

4. In a cooling and vending apparatus, a cabinet for storage of merchandise in original containers, gravity chute means with repeated reversals of inclination for receiving and storing said merchandise, means for cooling said merchandise by forcibly circulating a coolant in heat exchange with said containers and said chute operating said elevating means to lift containers for the purpose of vending them and a coin operated device for actuating the last said means.

5. In a refrigerator, a cabinet comprising a storage space for a product to be cooled and a reservoir for ice and water, means for making ice and storing it in flotation in the liquid from which ice is formed, means for circulating said liquid to and from said product storage space and through the floating ice for the purpose of cooling said product, and thermostatic control means for said circulating means.

6. In a bottle cooler, a tank having a space adapted to contain water and ice, means for circulating water, a reticulated grid for confining the ice to said space, a conveyor adapted to carry bottles through said liquid in a zone from which said ice is substantially excluded by said grid.

10 and ice-making means in said tank on the side of said grid where ice is stored.

7. In a refrigerator adapted for the cooling 0! bottles, means for recirculating liquid in said said bottles during a Part of its circulation, said recirculating means including means for supplying said liquid to an upper one of said chutes, and said chutes being so arranged that the liquid drains from one to another of them.

8. In a refrigerator, a storage space for a product to be maintain the quantity of said ice within maximum and minimum limits and to regulate said circulating means.

9. In a refrigerator, 9. storage space for a product to me ns responsive to variations in the quantity of ice in said second space for regulating the operation of said freezing means.

10. In a refrigerator,

GLENN MUFFLY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PA'I'ENTS Number Name Date 504,589 Kaime Sept. 5, 1893 882,858 Alexander Mar.24,1908 I 989.837 Cooper Apr. 18, 1911 1,004,998 Crecelius Oct. 3, 1911 1,224,942 Lorentzen May 8, 1917 1,240,321 Dickinson Sept. 18, 1917 1,442,953 Kehoe Jan. 23, 1923 1,457,300 Cohen June 5, 1923 (Other references on following page) Number Number 12 Name Date Martin Apr. 4, 1939 Hicks May 23, 1939 Slehrs Oct. 31, 1939 Landry July 30, 1940 Williams Feb. 25, 1941 Finnegan Apr. 1, 1941 Brock Sept. 2, 1941 Hazard June 23, 1942 Elliott Sept. 15, 1942 Gibson et a1. Apr. 6, 1943 Jennings June 13, 1944 Certificate of Correction Patent No. 2,496,304 February 7, 1950 GLENN MUFFLY It is hereby certified that errors appear in the printed specification of the above numbered patent requiring correction as follows:

Column 8, line 30, for coin drawer 257 read coin drawer 258; column 11, line 5, list of references cited, for Butter read Butler; line 8, for Goosman read Goosmmm;

and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 25th day of July, A. D. 1950.

[SEAL] THOMAS F. MURPHY,

Assistant Commissioner of Patents.

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