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Publication numberUS500035 A
Publication typeGrant
Publication dateJun 20, 1893
Filing dateMar 2, 1893
Publication numberUS 500035 A, US 500035A, US-A-500035, US500035 A, US500035A
InventorsCarl August Pfenning
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Carl august pfenning
US 500035 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)


MUSTARD POT. No. 500,035. Patented June 20, 1893.




SPECIFICATION forming part of Letters Patent No. 500,035, dated June 20, 1893.

Application filed March 2,1893. Serial No. 464,420. (No model.) Patented in Germany July 2, 1889, No. 51,390.

To all whom it may concern:

Be itknown that I, CARL AUGUST PFEN- NING, a subject of the King of Prussia, residing at Barmen Rit-tershausen, in the Province of Rhenish Prussia, Kingdom of Prussia, German Empire, have invented new and useful Improvements in Mustard-Pots, of which.

the following is a specification.

This invention relates to a mustard pot in which the contents are thoroughly inclosed and from which they are automatically forced by a piston, whereby adripping of the contents from the outlet after use is wholly avoided and for which I have obtained Letters Patent from the German Empire No. 51,390, dated July 2, 1889.

This invention is-set forth in the following specification and claims and illustrated in the annexed drawings,in Which Figure 1, is a vertical section along A B Fig. 3; Fig. 2, is a front elevation of the pot. Fig. 3, isa horizontal section of the pot along 0 D Fig. 1. Figs. 4 and 5, show a modification.

The pot or receptacle g of porcelain, stone ware or the like is provided with the outlet at and with a piston 75, tightened by a ring or packing 'r' and guided by tube 0 extending upward through cover 01. In the tube 0 which is suitably tapped or threaded at its upper part, turns the screw 3 having handle t for actuating the screw to raise or lower the piston. The piston and screw are supported by spring f braced or inserted between the cover (1 and the plate 19 secured to the screw. Said plate 19 has a projection 22 engaging a corresponding depression in another plate 19 removably placed into the top of shell h formed integral with the cover. The piston k can be provided at its under face with a porcelain or stone ware plate and is prevented from turning by the stemt extending through the cover and serving also as an indicator to show the position of the piston. I do not, however, confine myself to the employment of the stem 25 for preventing the piston from turning, as obviously this result may be otherwise accomplished. The descent of the piston is caused by turning the screw 8 in the proper direction, such descent being caused by the projection 2; moving out of the recess in plate 19 while at the same time the screw thread forces the piston down. At the end ofahalf turn however the piston moves upward or back in consequence of the projection '17 snapping back into its seat or recess in plate p.

In consequence of said movement of the pie-- ton acting on the contents a half turn of the screw will cause a certain quantity of the contents to pass out through opening a. At the end of the half turn, that is to say, as soon as the projection '12 snaps into the depression in plate 13', the retreat of the piston will correspondingly draw or suck back the contents so that allafter-dripping from the outlet isprevented since the mass contained in the outlet correspondingly recedes onthe short retreat of the piston.

The operation of the parts is such that when the screw sis turned in its screw-socket connection with the piston to advance the latter, the springf, projection 'v, and the depression in the plate 1) constitute means whereby successive or intermittentretractile movements are imparted to the piston while the screw 8 is being turned to advance said piston.

This arrangement enables a certain quantity of the contents to be forced out of the recept-acle by giving the screw a half turn or a less turn according to the number of depressions in plate 19. If for example as shown in Fig. 4 in section and in Fig. 5 in plan view the engaging plates 29 and p are provided with four teeth, each quarter turn will cause the piston to advance and snap back. These toothed plates have the teeth inclined toward each side so that the screw can also be turned in the reverse direction to screw up the piston.

To prevent rotation of the upper plate it is provided with a depression engaged by a rib on cap m. The lower plate is attached to the screw so as to turn therewith. The cover d is fastened by straps or catches Z Z engaging the lugs it. On swinging back or disengaging the fasteningsl the cover is free to be re- .moved. The cover can however be secured to the receptacle in any other suitable well known way.

' By the above described, automatically operating arrangement which furnishes only a definite quantity for present use, the contents are protected against air, dust and the like so that they can be preserved in the receptacle for a long time in serviceable condition.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a pot or receptacle, having an outlet, of a piston arranged in the pot or receptacle, a rotary screw, having a screw-socket connection with the piston for advancing the latteras the screw rotates, and means for slightly retracting the piston at intervals as the screw is rotated toladvance th piston, substantially as described.

2. The combination with a mustard pot, having a plate provided with a recess, and a piston arranged in the pot for expelling the contents thereof, of a screw for advancing the piston, a spring-pressed plate secured to the screw, and having a projection '0 which alternately passes out of and into the aforesaid recess asthe screw is rotated ,to advance the piston, substantially as described.

3.- The combination with a mustard pot, hav ing a shell h, provided at its upper end with a recessed plate'p, ofa piston 70 for expelling the contents of the pot, a screwsfor advancing the piston, a plate p secured to the screw, and having a projection v which alternately passes out of and into the recess in the plate at the upper end part of the said shell, and a spring f located in the shell and acting upon the platesecured to the screw, substantially as described. a l 4 In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3902635 *May 3, 1974Sep 2, 1975Jinotti Walter JFluid dispensing apparatus
US4823992 *Aug 27, 1987Apr 25, 1989Afros S.P.A.Metering device for feeding liquids to a mixing head
Cooperative ClassificationA47G19/183