US 1287985 A
Description (OCR text may contain errors)
W. T. HATMAKER. GASDlENE msrsusmc PUMP.
,287,985. "mung" n. is. ma.
Patented Dec. 17, 1918.
2 SHEETS-SHEET I.
.gasolene owing to .to witness the passage of UNITED STATES PATENT OFFICE.
WILLIAM T. HATMAKER, 0F DAYTON, OHIO.
To all whom it may concern:
Be it known that I, \VILLIAM T. Har- MAKER, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Gasolene- Dispensin Pumps, of which the following is a s eci cation.
This invention relates to improvements in gasolene dispensing pumps. Much annoyance has heretofore been experienced by. the. purchasers of gasolene at filling stations andelsewhere due to the uncertainty of measurement or discharge into the outlet hose con nection. The pump may be working but the purchaser does not know whether he is getting the proper quantity of 011 because of the fact that the oil is not visible at the point where it is supposed to pass into the outlet hose connection. And, again the purchaser does not know the condition of the strainer, which is often permitted to clog up because such strainers are difiicult of removal for the purpose of cleansing. In other words, the inaccessibility of the oil strainer prevents its easy remova and it is often (permitted to remain in use when it shoul be relnovedand cleansed or a, new one placed in position. It is, therefore, the object of the present improvements to provide a gasolene dispensing pump which is free from these and other faults. For example, another common annoyance met with in the use of pumps of this description is leakage on account of numerous joints in the discharge pipe which conducts the oil to the strainer from whence it discharges to -the outlet hose connection. And still another advantage is the unerring means I provide for enabling the purchaser gasoleue to the discharge hose connection during the o eration of the pump so that he may rcadi y know that he is getting in reality the quantity of gasoleuc for which he is paying. This latter means consists of a vane or spinner which is arranged in the mth of the gasolene after it passes through t 1e strainer.
Preceding a detaildescription of my invention reference is made in general terms to the accompanying drawings thereof. Of these, Figure 1 is a vertical front elevation of a pump in which my invention is utilized. Fig. 2 is an elevation showing the upper portion of the pump. Fig. 3 is a sectional view on the line 3-3 of Flg. 2. Fig. 4 is a sec- Specification of Letters Patent.
the character of the Patented Dec. 17, 1918.
1918. Serial No. 222,867.
tional view on the line H of Fig. 3. Fig. 5 is a detail view of a portion of the inclosing case. Fig. 6 is a detail view of the computing dial-and Fl". 7 is a detail view of the computing dial and the means by which it is operated in the discharge of gasolene from the-pump.
"In a more particular description of the improvements similar reference characters will indicate corresponding parts both in the. drawings and the description. 1 designates the hollow stand or base of the pump .in which is placed the pump cylinder 2 within which the discharge piston 3 moves. The cylinder 2 is mounted upon a casting 4 in which there is an inlet chamber 5. The passage from the inlet chamber 5 to the cylinder 2 is controlled by a suction valve 6 which operates through the action of the piston 3, in a well known manner. The gasolene is discharged into the chamber 5 through the inlet pipe 7 which extends from' the source of supply not shown. In gasolenc pumps,
trouble is often experienced during winter months due to freezing of the water in the I inlet/chamber for the gasolene. It is well known that there is a certain amount of water present in commercial gasolene and this has a tendency to separate from the gasolene when the latter is in a quiescent state. This tendency to freeze is detrimental to the pump structure and often interferes with the efiiciency of the pump. Such trouble is avoided in the present construction by making the walls of the chamber 5 of an upward and outward flaring shape as shown at 8Fig. ,1. The walls being thus of an (mtward'flaring form, no resistance is offered to the expansion of the water or liquid in the chamber 5 due to freezing and therefore any breakage of parts is avoided. Thehody of the pump is supported on the hollow stand 1 and consists of an inclosing casing 1'. The gasolene is discharged into a head 9, into the lower por tion of which is screwed a discharge pipe 10 which receives gasolene from the pump cylinder. Owing to the avoidance of the usual number of connections in the discharge pipe, any leakage of gasolene from the pump is avoided. Leakage is a common annoyance at this point in gasolene pumps as they are commonly constructed and by thus avoiding a multiplicity of joints in the pipe 10 this annoyance is very materially overcome. The discharge head 9 supports a transparent cylinder 12 by means of an annular groove in the upper portion of said head which receives the lower edge of the cylinder 12, said cylinder being preferably constructed of glass. Surrounding the lower portion of the cylinder 1'. is a stationary metal cylinder 13 which is likewise supported in a channel in the upper end of the head 5). The cylinder 13 extends approximately to a distance equal to half the length of the glass cylinder 12. ll designates a movable cylinder which telescopes over the lower stationary cylinder 13 and may be elevated to wholly conceal the glass cylinder 12 or lowered to uncover the upper portion of said glass cylinder 12 in order that purchasers of gasolene may observe the gasolene passing through the outlet or discharge portion of the pump. Within the lower portion of the glass cylinder 12 is located the wire screen 15 of cylindrical form and of suitable mesh to act as a filter for the gasolene in passing therethrough and outwardly around the sides thereof. The lower end of this screen 15 is open to admit of the entrance of the gasolene and the upper end is closed to compel the gasolene to pass out through the sides of the screen. The said screen 15 is supported on a suitable frame 16 which in turn is supported on a spider or frame 17 which extends across the opening below the screen. The said screen is supported in this manner by means of a central shaft 18 which extends above the upper end of the screen into the space thereabove. It will be observed from Fig. 3 that the screen 15 is approximately not more than half the length of the. transparent cylinder 12. This is important for the reason that were the screen to be of a length substantially equal to that of the transparent cylinder it would be impossible for the purchasers of gasolene to tell whether or not the gasolene was passing out of the pump. This is true because of the fact that the strainer 15 being 'of such length would wholly darken the interior of the glass cylinder. For this reason I preferably shorten the length of the strainer 15. The securing shaft 18 of the strainer is projected into the space above in order to receive a spinner or revolving vane 19 which lies in the path of the gasolene as it passes upwardly from the surrounding space between the strainer 15 and the cylinder 12. The spinner or vane 19 is so shaped that the upwardly passing gasolenc contacting therewith will cause the same to whirl or spin and to thus visually indicate through the glass cylinder that the gasolene is passing upwardly into the discharge head 20. By means of this device so arranged in the path of the outgoing gasolene. observers. or those who are purchasing gasolene can readily see whether the pump is discharging gasolene or not. Above the glass cylinder 1'. is mounted an apertured plate 21 through the opening of which the gasolene passes into the final discharge head 20. This plate 21 has an annular groove which receives the upper end of the glass cylinder 12 and seals it in a manner similar to the lower head 9. The glass cylinder 12 is thus sealed at both ends through its connection with these parts and when once in position it is unnecessary lor it to be removed. This is important owing to the fact that when once sealed at its upper and lower ends it is desirable to have it remain in that condition undisturbed. For this reason the upper discharge head 20 is detachable from the plate 21without disturbing said plate and in order that the screen 15 may beremoved from its position when necessary to be cleaned. It is a common practice in pumps of this character to permit the screen to remain in position after it has become clogged up and inefficient for the purpose of filtering the. gasolene; this is due to the fact that pumps of this type are generally so constructed that the pump has to be practically dismantled in order to remove the strainer. In the present case the upper discharge head '20 is united to the plate 21 by a suitable number of screw bolts 22 which pass through a flanged portion of the hcad iZO and into the plate 21. The plate. -21 is secured to the lower discharge head 9 by means of a suitable number of elongated screw bolts 23. The said discharge head 20 has a discharge spout 24 projecting from it which couples with a flexible discharge pipe 25 which empties into the gasolene tank (not shown) of the consmner. When the pump is not in use and in order to protect the glass cylinder from vandalism during such I)Gl'l()(l,'tl1 telescopic cylinder 14 may be elevated as shown in Fig. 3 and locked in such position. For this purpose the upper end of the cylinder 14 is provided with oppositely disposed slot lugs 26 which receive lugs 27 on opposite parts of the plate 21.
Referring now to the computing device by means of which the quantities of gasolene and the prices thereof are ascertainabl'e re'ferenec is made to Figs. 6 and 7 of the drawings. In this instance 28 designates the section of a dial upon which numerals from 1 to 12 consecutively appear. This portion of the dial is fixed and the figures thereon indicate quantities of gasolcne by gallons, for example, from 1 to 12 gallons. Within the circumference of the. dial portion 28 a removable dial portion 29 is placed consist ing of a series of concentric spaces containing numerals which indicate various prices of gasolene in gallon quantities and multiples thereof. It is well known that the price of gasolene is subject to fluctuation and that a fixed price per gallon does not continue,
dial 529 contains three different prices per gallon and if gasolene should fluctuate beyond the highest price indicated upon said dial 29 the dial may be easily removed and replaced with one showing a still higher price per gallon. The dials are mounted upon a shaft 30 and are held fast to studs 31 which project from the arm 32 that extends up above the pump aml is usually provided with a lamp (not shown) to be illuminated at night time. This is a convenient place upon which to mount the computing dial. The shaft 30 is pivoted to the pointer or index arm which moves over the face of the dials 28 and 29 to indicate the prices per gallon. The arm 33 is tapered at its outer end to oint to the gallon indications and is provided with a lateral indicator 34: which points to the prices. This indicator 3t may be moved along the arm 33 to-point to the different positions by means of a binding screw 35 which passes through the body of the indicator 34 and binds against the side of the arm 33. The indicator arm 33 is operated from the usual rack bar 36 which extends from the rod of the piston 3 and which is operated from the well known drive gear. These features are common to pumps of this character therefore it has not been deemed necessary to illustrate them in their entirety. The rack bar 36 when elevated moves up into the hollow extension 32 upon which the dial is mounted, as before stated. Upon this rack bar 36 a lug 37 is mounted in the path of which a pin 38 projects through an opening 39 in the side of the extension 3'2. The pin 38 extends from the crank arm 40 which is pivoted at 41 and carries a pawl 42 which engages a ratchet 43 on the shaft 30 of the pointer 33. (See Fig. (i). It will be seen that as the rack 36 is elevated and lowered in the operation of the pump. the lug and pin 37 and 38 respectively engaging each other will cause the hand 33 to move to the proper indications of the quantity of oil discharged and the price. it being understood that the movement of the rack 36 corresponds in the extent of its movement with the indications of the quantity of oil discharged in each operation.
llaving described as new and Patent:
1. The combination with a gasolcne dispcnsing pump. of a single continuous discharge pipe connected to said pump. a head connected to the discharge end of said pipe therefore the price my invention I claim desire to secure by Letters and forming a passage for the gasolene, a screen mounted on said head in a position to receive the gasolene therefrom, a transparent cylinder surrounding said screen, the lower end of said transparent cylinder having a sealed connection with said head, a plate with which the upper end of said transparent cylinder also has a sealed con nection, and a discharge head mounted on said plate and adapted to be removed therefrom to permit the screen to be removed without disturbing the sealed connections of the transparent cylinder.
2. In a gasolene dispensing pump, the combination with the pump cylinder, and a discharge pipe receiving the gasolcne therefrom. of a head into which said. pipe discharges, a screen mounted on said head and receiving the gasolene therefrom, a transparent cylinder inclosing said screen and providing space thereabove through which the gasolcne passes from he screen, and a. vane within said space in the path of the gasolene and adapted to be set in motion thereby.
3. In a gasolene dispensing pump, the combination with a pump cylinder, and a discharge pipe receiving the gasolene therefrom. of a head to receve the gasolene from said pipe, :1 screen mounted on said head and receiving the gasolene therefrom, a transparent cylinder surrounding said screen and extending there-above. the lower end of said transparent cylinder having a sealed connection with said head, an aperturcd plate with which the upper end of said transparent cylinder has a sealed connection. and a discharge head mounted on said plate.
4'. In a gasolene dispensing pump, the con'ibination with a pump cylinder and a discharge pipe, of a head receiving the gasolene from said discharge pipe. a screen mounted on said head in the path of the gasolenc. a transparent cylinder the lower end of which has a sealed connection with said head. a plate with which the upper end of said transparent cylinder has a sealed connection. an iuipei'foratc stationary cylinder mounted on said head and int-losing the lower portion of said transparent cylinder. and a movable impcrforate cylinder adapted to be supported by said plate when elevated to conceal the upper portion of said transparent cylinder. and to be lowered to expose the upper portion of said transparent cylinder.
In testimony whereof I affix mv signat urc.