US1847328A - Disher - Google Patents

Description

March 1, 1932. 1 BEzON 1,841,328 f DISHER Filed Spt. 28, 1929 /r/r/vfss.- aaL's 5er-ion raf? a.

Patented Mar. l, 1932 UNITED STATES PATENT ol-"Flcli LOUIS .'BRZON, OF PHILADELPHIA, PENNSYLVANIA,.ASSIGNOR T0 PHILADELPHIA ICE vCREAM: CONE MACHINERY COMPANY, 0F PHILADELPHIA, PENNSYLVANIA, A COR- PORATION 0F PENNSYLVANIA DISVHER application med september 28,1929. serial No. 395,791.

This invention relates to a disher consisting of a mould and a device for removing ice cream or other frozen materials therefrom. The invention particularly relatesto a mechanism for operating the blade removing the charge from the walls of the mould.

Dishers of the characterY described are made-in various forms, one of the most usual of which comprises a hemispherical mould containing an oscillating blade arranged to scrape the inner walls of the mould to remove a charge therefrom. kVarious mechanisms have heretofore been devised for actuatingthe blade, the mechanisms being operated by the finger or thumb of the operator grasping the handle of 'the disher.

It is found that a hemispherical charge having a very smooth surface is best produced by imparting avery rapid movement to the blade which scrapes the inner walls of themould. The rapid movement necessary to obtain a clean cutis particularly necessary during the intermediate portion of the stroke-as it is at this time that irregularities in the surface of the moulded charge are most apt to be produced if-a slow motion is imparted to the blade. f

It is the object of the present invention to provide a mechanism in which the blade lhas a rapid movement in order to produce a moulded charge of ice cream having a smooth, nicely formed surface. This object is accomplished by a mechanism of a simple character' which is readily accessible so as to be easily cleaned and which, because of its simplicity, is easily manufactured and unlikely to get out of order. f

Another object of the invention is the pro. vision of a mechanism of this type which is operable by a natural movement of the thumb of an operator as distinguished from the .un' natural movements necessitated by the arcuately moving actuating levers of prior devices. Y

In the accompanying drawings:

Fig. 1 is a plan view of the device, showing its mode of'operation; i

Fig. 2 is a vertical section thereof; Fig. 3 is a section on line 3 3 of Fig. 2; and

Fig. 4 is a section on line `4 4 of Fig. 2, illustrating the operation of the actuating linkage.

` The device comprises a handle 2 which on one end is provided with a grip 4 and on the other end with a hemispherical mould 6. Arranged for arcuate movement within the hemispherical mould is a semicircular blade 8 pivoted -at its free end-in the wall of the mould and carriedat its other end by a shaft 10 supported in the inner wall of the mould and a bracket 12 carried by the handle.

The outer end of shaft 10 carries a lever 14 having a slot 16 formed therein receiving a pin 18, carried by one end of a lever 20 pivoted upon the handle. The other end of lever 20 carries a pin 22 received in a slot 24 formedin a plunger 26, which, as shown, rides over a squared portion of the handle and is pressed outwardly by a spring 28 Wound about a guiding rod 30, secured to the plunger and passing through an aperture in the handle.

The operation of the device will clear from the disclosure shown in Fig. 4. As the plunger is moved inwardly by the thumb'of the operator, as indicated in Fig. 1, the lever 20 is rocked, causing the pin 18 to successively take the positions 18 and 18, thus moving lever 14 over the full line position to the two dotted line positions illustratedinthe figure. It will be noted that during the movement of the pin, it first approaches the shaft 1Q until the position 18 is reached, whereupon it recedes therefrom to the extreme position 18". Owing to this action, a very rapid angular movement is imparted tonshaft 10 during the intermediate portions of its oscilf lation, even though a uniform movement is imparted to the plunger. KK y It will be noted that when the positions 18 and 18 respectively are assumed by the pin,

the` lever 14 will be in two corresponding positions at 180" from each other. Accordingly, each oscillation of the shaft takes place to the opposite upper side. Motion of the j mechanism is limited by the engagement 'of pin 18 inV its two extreme positions against the outer end of the slot 16, thereby insuring that only a limited 180 movement is imparted to the blade.

It will be observed that the above construction is of very simple form, all of the parts being readily accessible for cleaning. By reason of the absence of cast gearing, irregular action is eliminated. y

YIn view vf the fact that the thumb actuated plunger is arranged for straight line movement in a direction at right angles to the axis of the handle, the movement of the thumb in pushing the plunger is natural and'- uo relative movement between the head of the plunger and the thumb occurs. because the end of the thumb normally moves in substantially a straight line towards the axis of a bar or the lilre held between the palm of the hand and the fingers. In prior devices in which the actuating levers moved arcuately, it wasneeessary forthe operator to constrain his thumb to an unnatural path Vof movement to follow the lever, whereby the operation was rendered difficult and th movement of the lever slowed down.

It to be noted that when the initial move- :nent of the plunger 26 occurs the pinl-l is moved in a ldirection making a relatively' small acute angle with the upper edge of slot 1G of arm la thereby acting as a wedge to startthe movement of the arm. Accordingly, in spite of resistance `of the frozen ice cream, or thetlile, the knife-initially cuts it without undue effort on the part ofthe opcrater. i The mechanical advantage thus gained means, of course, comparatively small movement of the lrnife fora given movement of the plunger. 'Y I-Iowever, this is 'compensated for by the acceleration of the knife in the intermediate portion of the stroke when the inertia of the moving knife aids the cutting action without the acceleration of any more effort even though the static mechanical advantage is very much reduced. In other words, the construction provides a large mechanical advantage for the initial cutting while provided such acceleration during the major portion of the stroke that a full movement of 180 is accomplished without excessivemovement of the plunger.

1 Vhat I claim and desire to protect by Letters Patent is:

p l. A disher of the character described comrising a'handle, a mould carried thereby, a

lade arrangedfto move across the inner sur,-V

face of the mould to freea charge therefrom, a shaft carrying the bladeand having its axis approximately parallel with the handle, a slotted arm carried by the shaft, a pivoted lever having a pin extending into .the slot, and a manually operable spring pressed plunger adapted tov oscillate the lever.

Q. A disher Vof the character described com-` prising a handle, a mould carried thereby, aV`

This'is n shaft having its axis at one side of the pivot of .the lever and being vbetween the extreme angular positions of the pin whereby, during movement of the lever, the pin first ap- Y proaches and then recedes from the shaft.

3. f A'disher of the character described comprising a handle, a mould carried thereby, a blade arranged to move across the inner surfaceof the mould to free charge therefrom, a shaft carrying the bladeand having its axis approximately parallel with the handle, a slotted armcarried by theV shaft, a pgivoted lever having a pin extending into the slot, and a manually operable springv pressed plunger adapted to oscillate the lever,lsaid shaft having its axis at one-side of the pivot of the lever and being between the extreme angular positions of the pin whereby, during movement the lever, the pin first approaches and thenrecedes Vfrom the shaft, movements of the lever being limited by englagement of the pin with the outer end ofthe s ot. A

l. A' disher of the character described comprising handle, a mould carried thereby, a bladeA arranged to move across the inner surface of the mould to free 'a charge therefrom, a shaft carrying the blade and having its axis approximatelyk parallel with the handle, a slotted arm carried by the shaft, a pivoted lever having a pin extending into the slot, andy a manually operable spring pressed plunger mounted to move transversely of the handle and having a pin and slot connection with said lever.

Inrztestimony of which invention, I have hereunto set my hand, at Philadelphia, Pennsylvania, on this 27th day of September,

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