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Publication numberUS2487431 A
Publication typeGrant
Publication dateNov 8, 1949
Filing dateJul 23, 1948
Priority dateJul 23, 1948
Publication numberUS 2487431 A, US 2487431A, US-A-2487431, US2487431 A, US2487431A
InventorsFloyd John B
Original AssigneeFloyd John B
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Knife head for apple slicing machinery
US 2487431 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


Patented Nov. 8, 1949 KNIFE HEAD-FOR APPLE SLICING MACHINERY John B. Floyd, Hilton, N. Y.

1948, Serial No. 40,353

1' Claim- (Cl- 146-169) Application July 23,

This inventionrelates to a knifehead for apple slicing machinery .of the general character in which a cored apple is guidedalong a post and forced into-engagement with a series of knives which cut the apple into quarters, 'eighths,--or other Segmental pieces, and it has for its ,purpose to provide a knife head that will efiiciently and satisfactorily cut an apple into flat slices of uniform thickness throughout instead of segmental pieces of varying thickness.

In the processing of frozen sliced apples, the slices are treated with ascorbic acid in order to protect the apple fiavor'from'loss of soluble solids and to delay browningaction of the fruit, and it has been found that, proper and uniform action of the ascorbic acid cannotbe had-onfruit when out into segmental portions because of the varying th ckness whchresults in uneven penetration of the ascorbic acid to difierent portions of the slice, and it is a purpose of the present-invention to afford a-knife head which makes'possible cutting an appleinto relatively thin slices of uniform thickness throughout and having flat sides instead of converging sides as in the case of a segmental slice.

Another obiect of the invention isto 'afiord'a knife head that will cut fiatslices of uniform thickness without crushing or injuring the fruit.

Still a further purpose of the invention isto afford a knife head that utilizes 'a series of knives arranged in'parallel planes and operable to cut a series offlat slices of uniform thickness and to support the knives in such a way as to brace them rigidly atpoints intermediate their ends and prevent their bending or flexing as-they enter the fruit.

An additional object of the invention is to afford a knife head in which-a series of slicing.

knives are arranged in parallel planes in stepped relation within a surrounding support and are engaged by transversely disposed bracing knives which are interlocked with the slicing knives and disposed for engagement with the apple.after engagement o'f'the slicing knives, the transverse knives acting to cut the'-=slices=in half orjto'sever them at points intermediate their ends.

Another purpose of the invention is to -provide a knife head of practical and durable construction that is efficient in its operation and in which a series of knives in parallel planes-braced by one or more interlocked transverse knives are rigidly mounted in a surrounding holder or support which is positionable in an apple slicing machine of conventional construction.

To these and other ends, the invention consists in the construction and arrangement of parts that will appear clearly from the following description when read in conjunction withthe accompanying drawings, the novel features beingpointed out in the claim followin the specification.

In the drawings:

Fig. l is a plan view of a structed in accordance with a ment of the invention;

Fig. 2 is a transverse line 2-2 of Fig.1 looking in cated;

Fig. 3 is a vertical sectional view taken centrally in a plane perpendicular to that of Fig. 2;

Fig. 4 is an enlarged horizontal sectional view on the lined-4 of Fig. 2, and

Fig. 5 is a detail view in side elevation, partially broken away, illustrat ng one of the transverse knives which are interlocked with the parallel slicing knives.

Referring more particularly to the drawings in which like reference numerals refer to the same parts throughout the several views, the invention comprises a knife holder or support which may be in the form of an annular band vor ring I of metal, the same beingprovided with knife head conpreferred embodivertical sectional view on the direction india series of oppositely disposed slots 2 which receive the ends of the slicing knives 3, the latter being anchored in the slots for rigid attachment to thesupport l by soldering, welding, or many suitable manner.

The slicing knives 3 are arranged in spaced parallel vertical planes as shown extending between opposite walls of the support and are distanced apart suitably to produce sired thinness as for instance from /4" thickness to thickness, the slices thus formed by the knives being fiat, having parallel sides, and of substantially uniform thickness throughout.

In order to effect a uniform and efficient cutting action without crushing the fruit, the knives are disposed in stepped relation as shown so that their successive cutting edges are positioned along a' line that forms an angle of approximately 45 to the horizontal, so that the several knives come'into successive engagement with the apple as the latter is forced downwardly through the knife head.

The slicing knives 3 are of considerable length and susceptible of flexing at their central portions when an apple is forced therethrough unless they are adequately braced, and in order to prevent any such movement of the knives and to insure their being held rigidly throughout their slices of any delength, there are provided the transversely arranged bracing knives 4 which extend crosswise of the parallel slicing knives 3 and are provided with slots 5 extending downwardly from their cutting edges and arranged to receive the bottom portions of the slicing knives 3. The transverse knives 4 and their cutting edges are preferably arranged at the same 45 angle as the edges of the slicing knives, the cutting edges of the transverse knives 4 being disposed somewhat below the cutting edges of the adjacent parallel slicing knives with which they interlock, so that the parallel slicing knives 3 come into operation slightly before the cutting contact of the transverse knives 4.

The transverse knives 4 are preferably arranged centrally of the slicing knives 3 so as to efiect endwise halving of the slices, and the transverse knives 4, which are rigidly mounted in slots also serve to retain a central sleeve 9 to which they are attached rigidly at their inner ends. The central sleeve 6 is further retained b a pair of slicing knives 1 arranged centrally of the support I and perpendicularly to the transverse knives 4, the knives 1 being secured at their outer ends in slots in the support I and at their inner ends to the lower portion of the sleeve 6, with their cutting edges angularly disposed, as shown in Fig. 3, and located between the lowermost of the aforesaid stepped parallel slicing knives indicated at 8, which latter at their central portions extend through slots formed in the side walls of the sleeve 6, as shown in Fig. 2.

The knives 4 and 1 being rigidly attached at their ends to the support I and to the central sleeve 6, and the knives 4 being interlocked with each of the parallel slicing knives 3, produces a rigid assembly that holds all the knives in fixed position against any flexing or yielding that might damage the fruit, and it will be understood that the central sleeve 6 receives a post or tube around which the wardly before being pushed into engagement with the knives, as usual in the operation of apple slicing machinery.

The knives 4 and l efiect a virtual quartering of an apple while the parallel slicing knives 3 slice the quartered sections into thin fiat slices of uniform thickness having parallel side walls and which may be as thick or thin as desired, depending upon the spacing between the parallel knives.

As a pre-cored apple is forced downwardly through the head, the parallel slicing knives which are arranged symmetrically on opposite sides of the center successively engage and penetrate the apple along parallel lines while the cutting edges of the transverse knives 4 engage the apple immediately after engagement of the adjacent parallel slicing knives so as to cut the slices in half endwise, although it will be understood that the transverse knives 4 need not necessarily be arranged perpendicularly to the parallel knives 3 but may be disposed in any transverse or crosswise relationship so as to anchor the parallel blades efiectively at points between in the support I,

cored apple is guided down-- their ends while at the same time permitting the slicing blades to be arranged in the stepped relation shown and by which the most efiective contact with an apple is to be had. The support I also need not necessarily be annular or of the particular construction shown as long as it serves as a rigid mount for the ends of the parpositioning in to cover such modifications or departures as may come within the purposes of the improvements or the scope of the following claim.


A knife head for apple slicing machinery comprising a series of horizontally disposed slicing knives arranged in spaced parallel vertical planes, an annular support surrounding said knives and having a series of parallel vertical slots therein at opposite points in which the outer ends of sa d slicing knives are secured, the slicing knives being disposed in stepped relation symmetrically on opposite sides of the center of the support, a vertically disposed sleeve located centrally of the support and permitting downward movement disposed centrally of said support perpendicularly to said transverse knives at less inclination to the horizontal than said transverse knives and having their upper ends anchored in the support and anchored at their lower ends in said sleeve.


REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Great Britain July 30, 1924

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US269835 *Mar 15, 1882Jan 2, 1883 Machine for slicing
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US1445555 *Sep 13, 1922Feb 13, 1923John RidpathPotato cutter
GB239979A * Title not available
GB183807904A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2749955 *Oct 11, 1952Jun 12, 1956Brock & Company IncPotato dicing machine
US3077215 *Mar 28, 1960Feb 12, 1963Kentor William EMeat cubing machine
US3765287 *Oct 19, 1971Oct 16, 1973A BornerAppliance for cutting fruits
US4059037 *Apr 26, 1976Nov 22, 1977Fasline Food Equipment Co.Slicing device
US4082024 *Nov 29, 1976Apr 4, 1978Ore-Ida Foods, Inc.Potato strip cutter
US4135002 *Aug 22, 1977Jan 16, 1979Ore-Ida Foods, Inc.Method of strip cutting raw potatoes
US4766793 *Jun 8, 1987Aug 30, 1988Urschel Laboratories, Inc.Knife assembly for a water gun
US5655428 *Aug 2, 1995Aug 12, 1997Mccain Foods (Aust) Pty. Ltd.For potatoes into strips
US6321628 *Feb 16, 1999Nov 27, 2001Stumabo International N.V.Knife for cutting tuberous plants, mainly potatoes, into rods or other shapes
US6959636Apr 2, 2003Nov 1, 2005Prime Slice, LlcProduce slicer
US20120125172 *Nov 18, 2011May 24, 2012Sammic, S.L.Cutting grid
USRE32822 *Sep 24, 1979Jan 10, 1989 Potato strip cutter
EP0457068A2 *Apr 24, 1991Nov 21, 1991Classic Fresh Cuts, Inc.Fruit cutting device and method
EP0593309A1 *Oct 15, 1993Apr 20, 1994McCAIN FOODS (AUST) PTY., LTD.Food slicing apparatus
WO2004091872A1 *Mar 26, 2004Oct 28, 2004Prime Slice LlcProduce slicer
WO2005068139A1 *Jan 15, 2005Jul 28, 2005Detlef AdamekDevice and method for chopping fruit
WO2008052492A1 *Oct 29, 2006May 8, 2008Ralf Detlef BarthelArrangement of cutting elements in a device for cutting up fruit
U.S. Classification83/662, 83/857
International ClassificationB26D3/18, B26D3/00
Cooperative ClassificationB26D3/185
European ClassificationB26D3/18B