US1678051A - Dispensing pump - Google Patents

Description

July 24, 1928. 1,678,051

c. L. BAsTlAN DISPENSING PUMP Filed Dec. 1, 1926 z2 m il,

Patented July 24, 1928.

UNITED STATES CHARLES L. BASTIAN,

OF CHICAGO, ILLINOIS, ASSIGNOR TO THE BASTIAN-BLESSING f COMPANY, oF CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

DISPENSING PUMP.

implication mea December This invention-relates to dispensing pumps ofthe kind which are designed more especially for use in soda fountain jars and other receptacles for dispensing av charge of syrup,

milk or other liquids.

Such pumps are usually rect pressure upon a spring which tires an operator at a busy fountain and somtimes causes pain and swelling of the hand and wrist.

The object of this invention is to provide a dispensing pumpof simple construction for dispensing a measured charge of syrup or other liquid and having a lever handle whereby it maybe easily operated without tiring the operator or injuring his. hand.

In the accompanying drawing illustrating a selected embodiment of the invention:

operated by di- Fig. 1 is a sectional view showing the upper part of the pump.

Fig. 2 is a sectional view showlng the entire pump. t

Figs. 3 and 4 are detail perspective views.

Fig. 5 is a sectional view on the line 5-5 of Fig. 2. j

Referring to the drawings the pump comprises a charge chamber 5 and a hollow head or housing 6 connected by a rod or support 7. A discharge tube 8 projects down 1n the charge chamber close to the bottom thereof and is connected at 9 to the wall of the charge chamber, This tube extends up through the plate 10 of t-he head of the pump and is provided with a spout 11. A plunger 12 operates in the chamber 5 and it is mounted on the rod 13 which extends up through the plate 10 and into the head 6 and is provided with a flat cap 14 on its upper end. A shaft 15 rectangular in cross section has one end 16 turned round to work ina socket 17 in one side wall 6 of the head. The other side wall 6" of the head has an enlarged opening 18 to freely accommodate the square shaft which projects through this opening and carries a handle lever 19 which is secured thereon by a screw 20. A yoke lever 21 is mounted on the square shaft 15 within the head and is held in position thereon by a set screw 22 and it has two parallel arms 22 which are connected at their outer ends by a pin 23 which carries a roller 24 located between the ends of the arms to bear u on the cap 14. The cap is seated against t e roller between the ends of the arms 22 which form guides for retainpressed plunger,I

1, 192e. seriai No. 151,947,"

ing the cap in proper position, and a spring 25 is arranged on the plunger rod beneath the capfor holding the cap against the roller at all times.l The lower end ofthe spring i 25 is seated in a sleeve 26 which is arranged on the plunger rod and is screw threaded in an opening in the plate l0 anda reinforcing plate 10, secured thereto by screws 27. The sleeve is adjustable in the plates 10-10 to adjust the plunger in the chamber for controlling the charge yof liquid to bedispensed, and a lock ynut 28 is arranged on the sleeve to engage the plate '10 for securingl The charge the sleeve in adjusted position. chamber is provided with a'valved opening 29 in its bottom and the handlelever is preferably provided with a rounded knob 30 at its outer end. f In practice the sleeve 26 and lock nut 28 are adjusted to regulate the travel of the plunger for dispensing a measured charge of syrup. When the" handle lever is pressed downward theplunger rod and plunger are depressed and the syrup is forced out of the charge chamber through the tube 8 and spout 11. When the pressure upon the handle is released the springreturns the plunger and plunger-'rod to initial position and at the same time syrup enters the chamber through the valved opening 29 for another charge. The spring'25 is confined between the cap 14 and the sleeve 26. The down stroke of the plunger is limited by engagement of the cap 14 with the upper` end of the sleeve; the up stroke of the plunger is limited by engagement of the ends of the arms 22 with the top of the head. The roller 24 constantly engages the cap and travels back and forth on the cap as the yoke lever is swung by operation of the handle lever. The invention provides a dispensing pump of simple construction, having relatively few parts and none of which are delicate in construction or liable to getout of order. The construction is such that the operation of the pump is made easy for the operator so that at a soda fountain, but,l it will be apparent that the invention may be employed for vother purposes and that the construction may be changed as required to adapt it for different purposes within the scope of the following claims.

ll claim:

L In a dispensing pump, the combination of a charge chamber, a discharge tube leading from the chamber, a plunger operating in the chamber, a plunger rod connected to the plunger, a cap on the upper end of the plunger rod, a head enclosing the capped end of the plunger rod, a handle rotatably mounted outside of said head, lever devices operated by said handle and unconnected with said cap but operating thereon during rotatable movement of said handle for depressing the plunger and plunger rod, and

'a spring for returning the plunger and plunger rod to normal position.

2. In a dispensing pump, the combination of a charge chamber, a discharge tube leading from the chamber, a plunger operating in the chamber, aplunger rodconnected to the plunger, a cap on the upper end of the plunger rod, a head enclosing the capped end of the plunger rod,a rock shaft supported in the head, a handle lever carried by said shaft outside of the head to rock said shaft, a lever mounted on the shaft Within the head, a roller carried by said lever and arranged` to travel back and forth on the ca during rotatable movement of the handle, to operate the plunger and plunger rod, and a spring for returning the plunger and plunger rod to normal position.

3. In a dispensing pump, the combination of a charge chamber, a discharge tube leading from the chamber, a plunger operating in the chamber, aplunger rod connected to the plunger, a cap on the upper end of the plunger rod, a head enclosing the capped end ofthe plunger rod, a rock shaft sup` ported in thehead, a handle lever mounted on the rock shaft outside of the head, a `yoke lever mounted on the rock shaft Within the head and Comprising a pair of arms, said arms being arranged to embrace said cap,

a roller carried by said arms and arrangedy to travel on the cap, said handle lever adapted to be operated to rock said shaft and swing said yoke leverL to depress the vplunger and plunger rod, and a spring for returning the plunger and plunger'rod to normal position.

Guitarrasv L.i BAsTrAN.

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