US579296A - Byron - Google Patents

Description

(No Model.)

B. J. DOUDS.

PUMP. No. 579,296. Patented Mar. 23, 1897.

linrrnn drains .Partnr Ori-rien.

BYRON J. DOUDS, OF CANTON, OI-IIO.

PUMP.

SPECIFICATION forming part of Letters Patent No. 579,296, dated March 23, 1897. Application led September 21, 1894. Serial No. 523,696. (No model.)

To all whom it 771/607./ concern.-

Be itlknown that I, BYRON J. DoUns, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Pumps; and I do hereby declare that the following is a full, clear, and exact descrption of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters of reference marked thereon, in which- Figure l is a longitudinal section of the pump, showing the same properly attached to a can. Fig. 2 is horizontal'secton of the piston top or handle, showing a portion of the piston-rod and the rod properly attached. Fig. 3 is a detached view of the screw-threaded flange designed and calculated to beattached to cans. Fig. 4 is a view showing a portion of the can and its opening directly below the screw-threaded flange. Fig. 5 is a transverse section through line x, Fig. 1. Fig. 6 is a detached View of the floating valve and its different parts. Fig. 7 is a view of the screwthreaded iiange, showing the same somewhat enlarged and illustrating a portion of the pump-barrel and its screw-threaded nozzle socket or thimble. Fig. 8 is a detached view of the piston-valve, showing a portion of the piston-rod.

The present invention aims to provide pharmaceutical pumps that will overcome the annoyances heretofore experienced in the operation of pumps of this class, which are the dripping and the escaping of the liquid during and after the piston descends; and the objects are, first, to Withdraw the liquid from the nozzle when the piston descends second, to prevent the liquid from rising in the barrel when the piston descends; third, to prevent dripping of adherent liquid from the free end of the nozzle after operatin g the pump; fourth, to return the overflow of liquid to the can, and, iifth, to prevent leakage from a can having a pump during transportation.

Similar letters of reference indicate corresponding parts in all of the iigu-res of the drawings.

In the accompanying drawings, A represents the pump-barrel, Which is formed of a length to -correspond substantially with thc length or height of the can to which it is attached and extends a short distance above the top of the can for the purpose hereinafter described. Within the pump-barrel A is 1ocated the piston-rod tt, to the lower end of which is attached in any convenient and wellknown manner the piston-valve B, which may be of any desired style, and to the top or upper end of the piston-rod a is attached the cap or handle E, which cap or handle is constructed as hereinafter described.

The top or upper end of the barrelA is provided with the stopple c, which stopple is for the purpose of closing the upper end of the barrel and also forms a guide for the piston-rod. At the upper end of the barrel and below the stopple is located the screwthreaded socket d, which communicates with the interior of the barrel A and is for the purpose of receiving and holding the nozzle e, which nozzle is provided at its outer end with a pendant a', the main part e being inclined downward, as illustrated in Fig. l, and is so inclined for the purpose of properly draining the adhering liquid into the barrel, and thereby prevent the liquid from dripping from the outer end of the nozzle after operating the pump. Below the piston-valve B and within the barrel A is secured the valve-seat O, which valve-seat is provided with an opening f, which opening is for the purpose of allowing the liquid to pass the valve-seat in either direction. The valve D is formed so as to allow the liquid to pass above it during the time the piston-valve is raised. The valve D is secured to the upper end of the rod g, which rod extends through the valve-seat opening fand has secured at its lower end a stop g', all of the described parts being made of material that will float, preferably wood, so. that at the downward stroke of the piston-valve a considerable quantity of the liquid in the barrel will escape before the valve D comes in contact with its seat, the stop g serving to limit the upward movement of the valve D, so that a sufficient quantity only of the column of the liquid in the barrel will escape to empty the nozzle e. It will be understood that a stop could be secured to the barrel A above the valve D 'without departing from the nature of my invention, as the only object of the stop g' is to limit the movement of the valve D, and hence I do not desire to be confined to any particular kind of stop.

The valve D is provided with the small opening h to allow a sufficient quantity of liquid to escape or pass through the valve after it engages with its seat and during the continued downstroke of the piston-rod and its valve, the object being to allow for the increased room taken up by the piston-rod as it enters the barrel, but it will be understood that the opening h may be differently located and the same object accomplished; and it is not absolutely necessary that the opening be located in the valve D, as the same object can be accomplished by providing an opening in the valve-seat and so locating the opening that it would not be covered by the valve D when said valve has become seated.

The upper end of the barrel A above the can is formed somewhat larger in diameter than the barrel proper, and is so formed on its top or upper end that a cup will be provided to catch the overflow of liquid, which overiiow of liquid is permitted to return to the can through the aperture d. The outer periphery ot' the flange forming the cup is screw-threaded, and is so formed for the purpose of receiving and holding the screwthreaded cap E, which screw-threaded cap is attached to the top or upper end of the piston-rod af.

The cap E limits the downstroke of the piston-rod and its valve, and when said cap is screwed down onto its flan ge all of the parts are held in proper position and leakage is prevented from the can when transported.

The ange F, which forms the cup, is eX- tended downward and is attached to the can in any desired manner.

For the purpose of providing a means for properly attaching the nozzle to its socket the opening 7o is provided, which opening is located in the flange F. It will be understood that the nozzle e should be detached for vplacing the can in proper condition for shipment. For the purpose of preventing leakage through the openingc when the nozzle is not in use the strip lo is provided, which strip is so attached that it can be easily removed. The operations of the pump are as follows: Vhen the piston-rod, together with its valve, is raised, the liquid will liow from the nozzle in the ordinary manner, but at the downstroke the entire column of the liquid in the barrel A will descend until the valve D rests on its seat, thereby removing the liquid from the nozzle e, and as the piston-rod and its valve B descends to its lowest point a sufficient quantity of liquid escapes through the opening 71, to prevent the liquid from rising in the barrel A, and, last, any adhering liquid will have drained from the inclined nozzle into the barrel.

I-Iaving fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The vcombination of a pump-barrel A, having located therein a piston-rod, Iprovided with a valve, the valve-seat C provided with an 'opening f, the floating valve D secured to the rod g extended through the opening f and provided with a stop and the Iopening h formed in the valve D, substantially as and for the purposespecified.

2. The combination of apump-barrel having located therein a piston-rod provided with a piston-valve, the nozzle e connected to the barrel and inclined upward toward its outer end, and the outer end thereof provided with the pendentportion Cd, the angeF, provided with the opening '70, the strip k and the valve D, substan tially as and for the purpose specilied.

In testimony that I claim the above I have hereunto subscribed my name in the presen ce of two witnesses.

BYRON J. DOUDS.

lVitnesses:

F. W. BOND, E. A. C. SMITH.

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