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Publication numberUS2508868 A
Publication typeGrant
Publication dateMay 23, 1950
Filing dateApr 2, 1947
Priority dateApr 2, 1947
Publication numberUS 2508868 A, US 2508868A, US-A-2508868, US2508868 A, US2508868A
InventorsMark Ross
Original AssigneeMark Ross
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Stationary cutter with screw fed plunger for cutting vegetables
US 2508868 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

May 23, 1950 2,508,868



Application April 2, 1947, Serial No. 738,841

2 Claims. (01. 146-164) This invention relates to a vegetable threader and the like, particularly for a device for making shoestring potatoes. The device, herein disclosed, is believed an improvement over any prior kind or type of vegetable threading device and that the art is materially advanced by this invention. Means are provided for evenly and neatly forming strings of the vegetable to be threaded. Means are provided for releasing the vegetable feeding means when the threading of the vegetable has been terminated, thus allowing the feeding means to be withdrawn and rapidly made ready for receiving another vegetable to be threaded. Particular designing has been incorporated with the device to save the cutting means from harm and undue wear without in any way interfering with the efliciency of the device.

One of the principal objects of this invention is to present a new and novel vegetable threading device or machine which is constructed of sturdy materials and designed to give long and lasting perfect service, and a device which is economical to make and manufacture.

Other objects, advantages and features of my invention will appear from the accompanying drawings, the subjoined detailed description, the preamble of these specifications and the appended claims.

Applicant is about to illustrate and describe one of the forms of his invention in order to teach one how to make and use the same, but it is to be understood that the drawings and description thereof are not to limit the invention in any sense whatsoever, except as limited by the appended claims.

In the drawings:

Fig. 1 is a side elevational view of the device, parts being broken away,

Fig. 2 is a partly sectional and partly elevational view thereof which is taken substantially along the line 2-2 of Fig. 1,

Fig. 3 is a vertical sectional view taken substantially along the line 3-3 of Fig. 1, v

Fig. 4 is a front elevational view of a portion of the device showing how the potato threads when worked therein,

Fig. 5 is an enlarged elevational face view of just the rearward jaw of the device,

Fig. 6 is a sectional View taken substantially along the line 6-6 of Fig. 5, and

Fig. 7 is a detail taken substantially along line 1-1 of Fig. 2.

The main base and support of the device comprises any suitable table clamping means I, a standard 2 having the side reenforcement ribs 3 and 4 and the rear rib 5. From the standard extends the integral horizontal member 6 which joins with the angular directed brace 'l to form a front cutter plate support 8. The upper part 8 is preferably curved, as shown, to give strength to the terminal of plate supporter 9. A T-ribbed reenforcement piece l0 strengthens the top of member 6, and a similar reenforcement rib H is provided for the upper forward part of the standard 2. The ribs 3 and 4 cooperate with the rear rib 5 to form a terminal and support a bearing boss 12 with a smooth bore, and the rib l i and the top of the standard cooperate to form a terminal to support the bearing boss I3 with a smooth bore; these twobearing bosses forming a bifurcated bearing element to give support to the elongated threaded stem or feeder rod [4.

One side of the bosses I2 and l3, l2 and I3 respectively are bored and have a bolt [5 which is a pivot for a snap-on feeder element of unit [6. A short lever ll extends from this element (see Fig. 3) which has an opening l8 to accommodate the top end of a curved ribbon-like spring member IS. The base of this spring member is secured to the top of the standard by the bolts 20 and 2 l, and the top end of this spring is shaped, as shown, to provide a lobe or catch end 22 and a latch portion 23. The feeder element has a half cylindrical recess 24 which is threaded to ride along the top of the threaded stem I4, and since the bores in the bosses l2 and I3 are not threaded, this element forces the stem to advance when the stem crank-like handle 25 is worked, providing the element I6 is snapped into position onto the threaded stem and held thereon under the latch end 23 of the spring. The pin or stud [4' at the rear end of the stem protrudes just enough in the valley between threads to positively engage the male thread portions of the recess 24; the reason for this construction is for the p rpose of forcing the element [6 to release itself (as shown in Fig. 3) when the stem 14 reaches its most advanced position toward the support 9. Note, that the end 22 of the spring catches the lever i! so that this element stays within bounds for easy manipulation.

The forward end of the stem M has secured thereto a jaw member 25 (see Figs. 5 and 6 for details) which has a plurality of outstanding projections or vegetable piercing and holding triangular studs 26 which are arranged in rows, as shown, and spaced apart in their respective rows for a definite purpose to be revealed later. The center point of the jaw has a pointed element 21 which is fixed to an adjustable screw 28 that is meshed with the threads of a bore 29 so that the screw can be adjusted to various positions by rotating it and hence determine the amount of projection of the point 21.

The support 9 has removably fixed thereto a jaw and cutter plate 30, configurated as shown in Fig. 2, which is secured to the support by the plurality of screws 3!. One edge 32 thereof is sharp to form a. knife and turned at a. slight angle, note Fig. 7,. so as to engage the vegetable to be out. A plurality of blades or cutting projections 33 are turned outwardly from the plate 311,. as shown, and have their right edges, as seen in Fig. 2, sharpened so as to readily and: neatly cut into the vegetable and provide the circular cuts indicated at 34 in the potato 35, see Fig. 4. The. blades 33 provide the circular rows of potato portions 36 which do not emerge as strings 36' until these rows are engaged by the knife 32 as the potato advances by operation of the handle 25;

The blades 33 are spaced, as shown, and this spacing is accurately predetermined in agreement with the row spacings of the holding studs- 26, on the jaw 25-, the spacing being such that when the two jaws come close together, as at the time the) cutting of the vegetable is terminated,

the studs 26 pass freely between the blades 33 so: that there is no interference whatever and hence the blades are not injured and can, therefQre giVe long service. A pointed stud His provided and fixed'to the support 9 which acts as a holder and pivot point for the vegetable to be threaded, that is, made into strings, such as, for instance; the well known shoestring potatoes.

It is, ofcourse, understood that various changes and modifications may be made in the details of form, style, design and construction of the whole or any part of the specifically clescribedembodiment of this invention without departing from the" spirit thereof, such changes andmodifications spaced; apart upstanding terminals from the base wherein one of the terminals is bifurcatedto form a pair of alined smooth bearings designed to allow a threaded stem to neatly slide therethrough, a plate fixed to the other terminal having cutting projections faced toward the said bearings, a shiftab le threaded stem positioned in the said bearings, one endofthe stem having means for rotating it andthe other end having means for engaging thepotato to be threaded," a cover pivoted parallel with the threaded stem and attached to the bearing terminal with threads therein and adapted to engage the threaded stem so that the means engaging the potato can be forced toward the plate, the projections from the plate being integral therewith and alined in a plurality of rows in angular relation, a straight edge to one side of the plate which is sharp and bent inwardly at a slight angle, the cover having its threads in a semi-cylindrical recess, this cover having a perforation with a latching edge at its. top, a curved spring having its bottom sharply bent to form a dog which passes through the perforation and engages the latching edge and another portion thereof.

2. In a device. for threading potatoes and the like, a base having means for attaching it to a working surface, spaced apart upstanding terminals from the base, one of the terminals having a bifurcated form to present alined smooth bearings which permit a threaded stem to slide freely therethrough, a plate fixed to the other terminal and which has cutting projections faced toward the said bearing-s, an elongated shiftable-threaded stem positioned in the said bearings, one end of the stem havingm'eans for rotating it and'the' other end: havingmeans-for engaging the potato tobe threaded, a cover hinged to the-bifurcated terminal andarranged toswing about an axis which; is parallel With'the stem, the cover having threads in asemi-cylindricalrecess which are adapted to engage the threads of the-stem, the projections fromthe plate being arranged in a plurality of I angularlyextending rows, astraight edge tcrone-si'de of the plate having a sharp edge and which is bent inward-1 y ata slight'a-ngle, the cover having an extended portion with aperforation therein havingspaced apart edges, a

curved spring-fixed to a portion of the bifurcated terminal and bent to form a' dog at one end-there-- of which is positioned in thesaid perforation with portionsthereof engagin-gsaid edges of the perforation, the end of the-stem near the means for rotating it having protruded means for engaging the cover for releasing it from thedog end of the spring.


REFERENCES The following references are of record III the le of this patent:


Number Name Datev 1,891,997 Moore Dec..,27:,. 1932; 2,012,507- Gustin Aug. 27, 1e35, 2,156,645- Waller May 2; 1939 2,464,993 Ross Mar. 22,1948

FOREIGN PATENTS Number Country Date 331,703 Great Britain. July 10, 1930

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1891997 *Jan 31, 1931Dec 27, 1932Moore Harry WVegetable slicer
US2012507 *May 11, 1933Aug 27, 1935Gustin John ECutter for longitudinal and radial vegetable slicing
US2156645 *Jul 24, 1937May 2, 1939American Hardware & Imp Ing CoCulinary device
US2464993 *Dec 19, 1945Mar 22, 1949Mark RossShredding machine
GB331703A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2767645 *Sep 18, 1951Oct 23, 1956Bireley Frank WApparatus for extracting citrus juices
US3952621 *Dec 6, 1974Apr 27, 1976James ChambosPotato cutting machine
US4926726 *Jan 3, 1989May 22, 1990Lamb-Weston, Inc.Food processing apparatus
US4979418 *Nov 12, 1987Dec 25, 1990Lamb-Weston, Inc.Food processing apparatus
US5089286 *Jul 18, 1990Feb 18, 1992National Presto Industries, Inc.Appliance for spirally slicing fruits and vegetables
US5138940 *Sep 7, 1990Aug 18, 1992National Presto Industries, Inc.Appliance for spirally slicing fruits and vegetables
US5174181 *Jun 28, 1991Dec 29, 1992Lamb-Weston, Inc.Food processing apparatus and method
US5179881 *Apr 23, 1991Jan 19, 1993Mccain Foods LimitedSystem for producing helical vegetable strips and turbine therefor
US5201259 *Nov 9, 1990Apr 13, 1993Lamb-Weston, Inc.Food processing apparatus
US5343791 *Dec 28, 1992Sep 6, 1994Lamb-Weston, Inc.Food processing apparatus
US5473967 *Mar 23, 1993Dec 12, 1995Mccain Foods LimitedVegetable cutting system
US5557998 *Dec 19, 1994Sep 24, 1996Schwartz; Eli H.Bagel coring apparatus
US5784942 *Nov 21, 1996Jul 28, 1998Jones; Birdsall L.Spiral potato slicing apparatus and method
US8596176 *May 19, 2011Dec 3, 2013Albert J. WagnerCubing device
USRE36155 *Sep 18, 1995Mar 23, 1999The West Bend CompanyApparatus for cutting potatoes and onions
DE1024689B *Apr 5, 1954Feb 20, 1958Peter FrankenMaschine zum Schneiden und Zerkleinern von Kartoffeln, Obst, Hartgemuese u. dgl.
U.S. Classification241/276, 83/425.1
International ClassificationB26D3/11, B26D3/22, B26D3/00
Cooperative ClassificationB26D3/22, B26D3/11
European ClassificationB26D3/11, B26D3/22