US1412973A - Fountain pump - Google Patents

Description

'J. H..SCRUGGS.

FOUNTAIN PUMP.

APPLICATION FILED OCT. 4. 1920. 1,412,973 te te Apr- 18, 1922.

INVENTOR. 7% m ATTORNEY.

in an effort to JOHN HENRY SCRUGGS, 0F KNOXVILLE, TENNEgSEE.

FOUNTAIN PUMP.

Specification of Letters Patent. Patented Apr, 13, 192% Application filed October 4, 1920. Serial No. 414,587.

To all whom it may concern:

Be it known that I, JOHN HENRY SoRUGGs, a citizen of the United States, residing at Knoxville, in the county of Knox and State of Tennessee, have invented a new and useful Improvement in Fountain Pumps, of which the following is a specification, reference being bad to the accompanying draw- 1ng..

This invention relates to improvements in fountain pumps of the character now commonly employed in soda fountains, etc., and the object of the invention is to provide a. pump of. this character with a registering device which will show the proprietor of the fountain just how many times the pump has been operated. In connection with this, I- also employ a, device for warning the attendant when the syrup is getting .low, and also a device which will Prevent the pump from being operated a succession of small strokes revent the operation of the registering device.

The invention, in its preferable embodiment, consists in the arrangement and combination of parts hereinafter'shown and described and then definitely claimed.

In the drawings accompanying and formingFpart hereof: p igure 1 is a vertical central section of a fountain pump having my invention applied thereto.

Figure 2 is a sectional view throng line 2-2 of Figure 1. T

Figure 3 is a section of the lower .part of the ump showing the operation of .a device 'or giving the attendant Warning when the syrup is getting low.

Figure 4 is a detail.

the

Referring now to the details of the drawings by numerals: 1 designates a casing or receptacle which may be of any desirableform and which is u-sually supplied witha cover as that shown at 3. Within the easspeaking, may be of the ordinary form now in use and which consists of a pump cylinder" jhaving the'usual piston 6 working therein,

the bottom of the cylinder being provided.

With any form of suction valve 8 as shown in dotted lines in Figure 1. The piston has the usual stem 10 connected thereto which.

passes through a stufiing box 12 and has a handle 14 by which the stem 10 may be de: pressed and its piston 6 operated within "from this rece tacle was used.

'sis'tin the cylinder 4, the stuffing box 12 having the usual spring, not shown, for returning the parts to the positionshown in Figure 1. As 1n the usual embodiments of this device, a brace rod 16 is employed connecting the pumpcylinder 4; with the cover 3 by means of the horizontally offset member 18, this construction making it possible to remove at one time the cover and all the working parts from the casingor receptacle 1. The cylinder 4 is designed to rest onthe bottom of the casing 1 and to that end is provided with feet as shown at 20. From the casing forming the cylinder 4 projects'a vertically ex- .tended delivery pipe 22 whose upper end connects with the nozzle 24 as shown in Figure 1. All the parts so far described may be of the ordinary construction and as my invention does not reside therein they may be altered at pleasure.

In order to protect the proprietor of the store, a registermg device 25 is attached pref-. erably to the interior of the cover 3 as indicated in Figure 1. Nothing new is claimed in this registering device per se as it may be of a form well known .on the market although I mayadd that in the present instance the cover 3 is provided with a sight opening 26 through which the numbers on the registering wheels may be viewed. From, the casing of the registering device projects a connecting rod 28 which is pivoted to a lever 30 pivotally supported by the brace rod 16. The free end of. this lever'30 is slotted to accommodate a screw 32 which iscarried by a clamping collar 34c supported by the pumping stem 10. 4 It follows from the construction shown and described that whenever the pumping stem 10 is depressed; the lever 30 will be moved downwardly upon its pivot so as to force the connecting rod 28 upwardly tooperate the registering device. The proprietor can tell from an ex-. amination of the register just how many sales 7 have been .made' in which the syrup In order to make it impossible to move the" pumping stem 10 downward part way for a succession of short strokes in an effortnot to move it sufficiently to operate the register, I-usea su plemental device preferably con- 0 the following elements The pumping stem is provided with a collar 40 havin a pawl 42 pivotally supported thereon. n. some stationary part of the device,

as on the delivery tube 22, I provide a rack bar or series of teeth 43 adapted to be en-' vided for the pivoted pawl 42 and'the latter is provided with a cam as 44 which is designed to engage with the spring 50. When the cam44 on said pawl is in one position, the pawl 42 will be held out of engagement with the teeth as shown in dotted.

.ines in Figure 4, but when the cam is in the position shown in full lines in Figure 4,-the pawl will be pressed by its spring against the teeth 42. The operation of this part of the device: is as follows: Assuming that when the pumping stem 10 moves upward to the position shown in Figure 1, the pawl 42 strikes the stop 46 and moves its cam 44 to the position shown in full lines in Figure 4, the spring 50 will press the pawl against the teeth 43 on the delivery tube 22. Therefore, if the attendant presses down even part way on the handle 14 of the pumping stem 10, the pivoted pawl, being in engagement with the ratchet wheel 44, will prevent the stem from moving or being moved upward. The only way the attendant can get the stem back to the normal position shown in'Figure 1 is to move the stem all the way down to the extreme lower end of its strokef When this is done the pivoted pawl 42 strikes against the stop 48 and the pawl is moved out of engagement with the teeth 43 and the spring 50 will hold the pawl out of engagement with saidteeth. Now that the pawl-is out of engagement with said teeth the pumping. stemlt) can move to the upper end of its stroke.v However, just as. it reaches the upper end of i y the stroke, the pawl 42 will engage the stop.

46 and move said pawl 42 untilits cam is in the position to again engage the teeth 43 of the delivery tube 22. It will thus be seen that I haveprovided effective means for preventing the attendant from giving a succession of short movements to the pumping stem 10 andthus slowly pumping small quantities of syrup without operating the registering device, or of preventing the pump j and pump rod from being raised until they completethe full ;d9wnward stroke.

Another improvements I have illustrated is that shown in connection with the pump itself. Inorder to inform the operator when the syrup has been almost completely pumped from the casing 1, I provide the pump cylinder 4 with a pivoted lever 52.

This lever is provided with a latch 54 which is held by means of a float 56 in the inactive position shown in Figure 1. Whenever the syrup becomes so slow that the float 56 willdrop to the position shown in Figure 3, this latch 54 moves into the position shown in Figure 3 and prevents the pump piston 6, its

pumping stem 10 and the handle 14 from moving upward to the full extent of the stroke. This will warn the attendant" of the low supply of the syrup. When the attendant places a new supply in the tank, he resets the lever 52 so that the float56'will hold theparts in the position shown in Figure 2.

From the foregoing and accompanying drawings, it will be seen that I have invented a fountain pump in which a very simple form of registering device is employed and .with this a safety device which will prevent the attendant from operating the pump without operating the register.

It will be obvious that changes and modifications may be made without departing from the spirit of'my invention, the scope of which is set forth by the appended claims.

What I claim as my invention is: 1. In an apparatus of the kind described, the combination of a tank, a cover therefor,

a member supported by and depending from said cover within the tank, a pump and pump rod,'and a device located inthe tank and coacting with said depending member and said pump rod for'preventing said rod from returning untilit. has completed its full forward stroke.

2 In an apparatus of the kind described, the combination of a tank, a cover therefor,

a member supported by and depending from said cover within the tank, a pump and pump rod, and a device located in the tank and coacting with said dependingmember-j and said pum rod for preventing said rod from returning until it has completed its full forward stroke, and a registering device operated by each stroke of said pump rod.

3. In an apparatus of the kind described, the combination of a tank, a cover therefor, a member supported by and depending from said cover within the tank, a pump and pump rod, and a devicelocated in the tank and coacting with said pump rod and member for I preventing said ump rod from being given a succession of s ort strokes.

4. In an apparatus of the kind described,

the combination of a tank, a cover therefor, a membersupp'orted by and depending from said cover within the tank, a pump and pump preventing said 'ump' rod from being given a succession of s ort strokes to avoid operating said'registering device:

5. In an apparatus of the kind described, the combination of a tank, a cover therefor, a member supported by and depending from said cover within the tank, a pump and pump, and a ratchet mechanism located in the tank and (so-acting with said emma depending member and said pump rod for preventing said rod from returning until it has completed its full forward stroke.

6. In an apparatus of the kind described, the combination of a tank, a cover therefor, a member supported by and depending from said cover within the tank, a pump and pump rod, ratchet teeth on said depending member, a pawl carried by said pump rod in the tank and adapted to engage said teeth during the forward stroke of said pump rod to prevent said rod from being given a succession of short strokes, and means for mov- -ing said pawl into and out of engagement with said teeth.

' 7. In an apparatus of the kind described, the combination of a tank, a cover therefor, a. discharge pipe supported by and extending through said cover into said tank, a pump and pump rod, and a device located in the. tank I and co-acting with said discharge pipe and said pump rod for preventing said rod from returning until it has completed its full forward stroke.

8. In an apparatus of the kind described,

' the combination of a tank, acover therefor,

' a discharge pipe supported by and extending through said cover into said tank, a pump and pump rod, and a device located in the tank and co-acting with said discharge pipe and said pump rod for preventing said rod from. returning until it has completed its full forward stroke. and a registering device in operative relation with said pump located in t e tank and co-acting with said discharge pipe and said pump rod for preventing said rod from returning until it has completed its full forward stroke.

10. In an apparatus of the kind described, the combinatlon of a tank, a cover therefor,

a pump cylinder and a pump rod, a rigid member extending from the lower face of the cover downward in the tank and rigidly 'oinedto said cylinder, and a device located 1n the tank and co-acting with said rigid member and said pump rod for preventing said rod from returning until it has completed its full forward stroke.

11. In an'apparatus of the kind described, the combination of a tank, a cover therefor, a pump cylinder and a pump rod, a. rigid member extending from the lower face of' preventing said rod from returning-until ithas completed its full forward stroke.

12. In an apparatus of the kind described, the combination of a tank, a cover therefor, a pump cylinder and a pump rod, a discharge pipe supported by and extendin downward from the cover in the tank an rigidly joined to said cylinder, and a device located in the tank and co-acting with said discharge pipe and saidpump rod for preventing said rod from returning until it has completed its full forward stroke.

13. In a device of the character described, the combination of a tank, a pump near the bottom thereof, and a device co-acting with and through said pump for warning the attendant when the'supply of liquid is low.

14. In a device of the character described. the combination of a tank, a pump near the bottom thereof, a piston for said pump, and a device operating to prevent said piston from completely operating when the liquid in the tank becomes low.

15. In a device of the character described,

the combination of a tank, a pum near the bottom thereof, a piston for sai pump, a device co-acting with and through said piston to warn the attendant when the supply of liquid becomes low, and a fioat to control the operation of said device.

16. In a device of the character described, the combination of a tank, a pump near the bottiom thereof, a piston for said pump, a latc1 co-acting with said piston to lock the same and warn the attendant that the supply of liquid is low, and a float to control the operation of said latch.

17 In a device of the character described, the combination of a tank, a pump near the bottom thereof, a piston for said pump, a latch pivoted to the cylinder casing and adapted to project into the path of said piston to lock the same and warn the attendant that the supply of liquid is low, and a float to control the operation of said latch.

In testimony whereof I have signed my name, in presence of two witnesses, this first day of October, in the year one thousand nine hundred and twenty.

JOHN HENRY SCRUGGS.

Witnesses: W. R. TAYLOR, E. C. SHETTERLY.

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