US2094423A - Pump - Google Patents

Description

Sept. 28, 1937. R. BERNHARDT PUMP Filed March 3, 1934 my wm BY www@ ATTORNEY.

Patented Sept. 28, 1937 UNITED stare ori-is 2 Claims.

This invention relates to pumps or spray devices which are particularly adapted for use in. spraying the contents of bottles or other small containers, the bottle usually being held in the hand the pumpy manipulated by one finger. In order to adapt these devices for general use it is desirable that they-be made as inexpensive as possible and one or" the principal objects ofthe present invention is to provide an` exceedingly simple and efficient device for this purpose which can bemade at a low cost. Other objectsv of the invention are to provide a pump in which a pump lor exhaust chamber is formed of telescoping tubular members without the use of a piston oi the type commonly used for such devices; to provide a combined receptacle and pump with means for holding the pump in an inoperative position and making a tight seal or closure betweenA the pump rod and the bottle cap; to provide a pump having its operating member and rod formed of a single piece of tubing; to provide novel means for locking the pump rod in the cap;

and to provide other advantages and other features of construction as will appear more fully hereinafter.

In the accompanying drawing illustrating this invention;

Figure 1 is a side View of a bottle or container showing my pump applied thereto;

Figure 2 is a sectional view taken on the line 2-2 of Figure 1;

Figurev 3 is a view similar to Figure 2 showing the movable member or tube in depressed or discharging position;

Figure 4 is a sectional view taken on the line 4-4 oi Figure 2; and

Figure 5 is a, sectional view taken on the line 5-5 of Figure 2.

The bottle or container 6 may be of any suitable form for holding and dispensing various liquids, such as cleaning sprays or the like, and is preferably of such size that it may be conveniently held in one hand. The bottle has a,l capi 'l preferably formed of metal which is screwed thereon. A bearing sleeve 8 is secured in the cap 'l to provide a bearing and guide for the hollow pump rod or tube 9. In order to secure the sleeve to the cap I provide an annular bead or projection lll adjacent to the upper end thereof which engages with a stiffening plate or washer il in the cap. The upper end of the sleeve extends .through the washer and cap and is flanged or staked over as shown at l2 to engage with the top of the cap, thereby securely riveting the bearing to the cap.

The lower end of the hollow rod or tube 9 is enlarged to provide a bearing portion or extension i3 which iits closely within the pump cylinder or tube It. The upper end of the tube is notchedor portions bent inwardly as shown at l5 to hold the portion i3 in position in the cylinder.Y The lower end of the cylinder has a washer it which is secured therein by notching or bending in portions of the end of the cylinder as shown at il. The washer i6 serves as a valve seat for a ball valve i8 having a ball retainer i9 for holding the same in operative position. kA compression spring 2Q has its lower end engaging with the ball retainer and its upper end is slightly reduced and engages with the shoulder 2l at the point oi expansion of the tube 9. This spring tends to hold the tube 9 in normally raised or extended position with the lower end of the cylinder resting on the bottom of the bottle as shown in Figure 1.v

The cap is provided with a gasket or washer 22 for making a tight closure with the bottle and the l sleeve makes a tight closure with the cap. In order to make a tight closure between the bearing 8 and the tube il, which must move freely therethrough, the lower end of the bearing is slightly enlarged or made bell shaped as shown at 23. The sides of the tube are bent inwardly or flattened as shown at 24 in Figure 4, thus forming parallel grooves in the sides of the tube to receive the sides of a washer 25 having a U- shaped slot or recess therein as shown in Figure 5. The adjacent ends of the washer are bent inwardly to lock the same in position and this washer provides an abutment for a resilient gasket or ring 26 which is adapted to be compressed or t tightly between the washer and the lower end23 of the bearing when the rod-9 is in raised or normal position, and is pressed inwardly against the tube by the bell.

In order to lock or fasten the pump rod in raised position and to prevent accidental actuation of the same, as for shipping purposes, the rod 9 is provided adjacent to the upper surface ci the cap with two oppositely disposed grooves or recesses 2l which are formed by indentng the sides of the tube as shown in Figures 1 and 4. A slidable catch 28 has a hole therethrough somewhat in the shape of a keyhole with an enlarged portion 29 through which the tube may pass freely and a narrower portion St which is adapted to fit over the flattened portion of the tube, the adjacent edges of the plate or catch itting in the grooves 21 .when the catch is moved to locking position. This catch is made of relatively thin metal and has a thumb-piece 3| for convenience in sliding the same and is preferably provided with upwardly pressed ridges 32 which may be pressed through the grooves 21 but which will tend to engage with the adjacent portions of the tube and hold the catch in locking position. When the catch is drawn so that the enlarged portion of the hole 29 registers with the tube, the tube may be moved freely up and down. When the catch is pressed into locking position or into engagement with the grooves 21 as shown in Figures 2 and 4, it will prevent the downward movement of the tube on account of its resting against the upper end of the bearing 8 and will tend lto hold the washer or abutment 25 closely against the gasket 26.

The upper end of thetube 9 is preferably bent' Y venience in manipulating the pump.

The combined cylinder and tube 9 with its eX- panded-portion I3 forms a compression chamber or pump chamber into which the Vlioun'd may be drawn and from whence it is ejected by the reciprocating action of the tube. In the operation of the same, it may be assumed that there is a suflicient supply of liquid in the bottle so that it will ow into the cylinder past the check Valve i8. The operator then presses the tube 9 downwardly by means of the nger piece 35, thus reducingV the capacity of the chamber formed by the tube and the cylinder or barrel and tending to force any contents therein out through the nozzle 33. The spring 20 then forces the tube 9 upwardly thus increasing the capacity of the chamber and tending to form a vacuum therein. On account of the small aperture through the nozzle 32 a minimum amount of air passes. into the tube and consequently the liquid rushes in past the check valve I8 to again fill the lower Yportion of the chamber. The operation may then be repeated to continue the spraying.

Having thus described my invention what I Vclaim and desire to secure by Letters Patent is:

1. In a device of the character set forth, means for fastening a pump tube to a cap, comprising parallel channels formed in the sides of the tube,

a fastening plate engaging with the tube and having an irregularshaped hole therethrough withV one portion sufficiently large to permit the free movement of the tube therethrough, and another portion adapted to t closely in said channels in the tube when the plate is moved longitudinally,

said plate also having a transverse raised portion which engages with portions of the tube for holding the kplate in locked position.

2. In a sprayer construction, a fixed closure assembly, a piston member movable through the closure, means for fastening the piston member to the closure assembly, comprising parallel channels formed in the side of the member, a fastening plate engaging with the member and having an irregularly shaped hole therethrough with one portion sufficiently large to permit the free movement of the member therethrough, and another portion adapted to fit closely in said channels in said member when the plate Vis movedV longitudinally, said plate also Vhaving means engageable with the member for holding the plate in fastening position.

RUDOLPH BERNHARDT.

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