Патент USA US2405056код для вставки
Jui? 30, 1945- x. RQâENELQoxx/à SAFETY GRATER Filed Dec. 3l, 1941 llmiilmmlww / 229405,65@ Patented July 30, 1946 2,405,056 UNITED STATES PATENT OFFICE _ 2,405,056 n SAFETY GRATER Irving Rosenbloom, New York, N. Y., assignor to Renwal Manufacturing Co., Inc., New York, N. Y., a corporation of New York Application December 31, 1941, Serial No. 425,073 10 Claims. (C1. 14s-_177) 1 2 This invention relates to improvements in graters, and more particularly to a novel, prac» result is a unitary grater of pleasant appearance, durable, sturdy, efñcient, stainless, sanitary and tical, plastic grater. relatively inexpensive. It is among the objects of the present invention to provide a grater suitable for all grating pur poses, and which is always safe to use. In accord ance with my invention I provide a unitary grater construction of composition or plastic material. The unitary grater avoids the use of metal or of sharp metallic edges that have characterized 10 Figs. l, 2 and 3 illustrate one exempliñcation which the unitary plastic grater may assume in practice. The grater comprises a rectangular frame I0 having an extended looped handle Il. A lattice network I2 is integrally formed with framework I0. The lattice network I2 contains a plurality of symmetrically arranged square, or rectangular, openings I3 formed by a series oi‘ regularly spaced horizontal bars I4 and vertical prior graters, The resultant grater is rust-proof, effective, and cannot cause injury to the user. The plastic grater of my present invention is a sturdy, durable utensil, useful for grating foods, vegetables, soaps, breads, and the like. It is also bars I5. Bars I4 and I5 are in the same plane, and are molded to constitute a unitary lattice network construction incorporating the openings I3. The frame I0 and lattice network I2 are useful for dicing cooked Vegetables and other molded as a single unitary structure, with the foodstuffs. My preferred unitary grater construc ends of bars I4 and I5 integrally terminating in tion permits ready cleansing, insuring a sanitary frame IU. utensil, so essential when used with food. Also, the plastic grater is practical, and relatively in 20 The grating surface of lattice network l2 is formed by shaping bars I4 and I5 thereof so as expensive to fabricate. t0 taper into cutting edges IB and I'I. The cross These and further objects, advantages and capabilities of my invention will become more sectional appearance of bars I4 and I5 are ac cordingly triangular as Seen in Figs. 2 and 3. in apparent in the following description of pre ferred embodiments thereof, illustrated in the 25 this manner sufficient mechanical strength is irn parted to bars I4 and i5 comprising the lattice drawing, in which: network I2, and also insures suitable cutting Fig. l is a plan View ofr one construction of the edges for the grating surface thereof. Additional unitary grater, mechanical strength may be imparted to the Fig. 2 is a cross-sectional view through the graterof Fig. 1, taken along the line 2-2 thereof. 30 lattice network I2 without interfering with the grating or dicing operations of the grater. To Fig. k3 is an enlarged perspective view of a wards this end I provide ribs or bulges I8 and detail of the grater of Fig. l. I9 on the non-cutting sides of bars I4 and I5 re Fig. 4 is a cross-sectional View, corresponding spectively, Strengthening ribs I8 and I8 have a to Fig. 2, of a modified form for the grater. cross-sectional width slightly larger than that of Fig. 5 is a plan view of another form of the the non-ribbed bars. Such ribs may be provided grater, Fig. 6 is an enlarged cross-sectional view of the for selected bars so as not to interfere with the size of diced elements. In the grater embodiment of Fig. 1, ribs I8 and I9 are provided respectively invention is preferably such as to permit its com ,40 for three symmetrically spaced horizontal bars I4, and two vertical bars I5. It is to be under plete fabrication by a single mechanical molding stood that more or less of the bars may be so operation. The plastic material may be of any reinforced within the scope of the invention. suitable type, including phenolic resins, _such as The thickness of the bars containing the Bakelite and Catalin; cellulose acetate; acrylic strengthening ribs preferably does not exceed the resins, such as Lucite; styrene resins; or other plastic molding composition. The grater may be thickness of the frame I0, as shown in Fig. 2. The grating surface is preferably arranged in a formed by injection molding, compression mold plane corresponding with a surface of frame II), ing, or by casting. The preferred plastic grater so that the frame Will not interfere with the grat« is a unitary device, Towards this end the in ing action. In this manner, for a given thickness vention provides a unitary plastic grater of ample of frame I Il, for example fle", a plastic lattice strength and durability, incorporating suitable network I2 of ample mechanical strength may molded grating surfaces. I have constructed be provided for the grater. The tapered nature complete practical commercial graters, in accord of the lattice bars I4 and I5 insures durable ance with the present invention, by a single in jection or compression molding operation. The 55 grating edges that will stand up under all con-- grater of Fig. 5, taken along the line 6_6 thereof. The construction of the plastic grater of the 2,405,056 if ditions of use. The strengthening ribs do not aifect the dicing operation of the grater, since the resulting openings I3 in the grater are not unduly interfered with. In one form, the strengthening ribs corresponding to I8 and Isl CII may be provided for all the horizontal and ver tical lattice bars, as will be shown in connection 4 Fig. 1. This merely reduces the cross-sectional area of the elements diced by the grater. While I have disclosed preferred embodiments which my invention may assume in practice, it is to be understood that modifications and Vari ations thereof may be made Without departing from the broader spirit and scope of the inven tion as expressed in the appended claims. with the form of the invention illustrated in Figs. 5 and 6. What I claim, and desire to secure by United An important feature of the present invention 10 States Letters Patents, is: l. A grater of plastic composition comprising is the novel grating surface arrangement pro a frame supporting a lattice network composed vided for the plastic lattice network. The grat of intersecting series of parallel bars integrally ing or cutting surface is arranged substantially in a single plane, preferably co-extensive with molded with said frame, said bars being substan the corresponding edge of the supporting frame 15 tially triangular in section and terminating in grating edges lying in a common surface substan lil. Also, the design of the grating surface is tially including one face of said frame. such as to permit its direct molding with the remainder of the grater as a unitary body. Fig. 3 2. A grater of plastic composition comprising clearly illustrates the preferred nature of the a frame supporting a lattice network composed grating edges. rIne lattice bars Ill and I5 taper 20 of transverse series of parallel bars in substan~ tially the same plane integrally7 molded with said to narrow or pointed edges IIS and I`I respectively. By providing regular constrictions or spaced nar frame, said bars being triangular in section and terminating in grating edges lying in a plane rowed widths 20, 2i along lattice bars I4 and substantially including one face oi~ said frame, I5, the resultant formations terminate as grat ing edges Z2, 23, alternated with grating edges 25 said triangular bars extending in height to sub I6 and I`I respectively. In this manner two sets stantially the other face of said frame. of interlaced cutting edges I5, I'I and 22, 23 are 3. A grater comprising a frame, a lattice network formed on the grating surface of the lattice net composed of transverse series of bars of plastic work I2, which sets are in planes substantially material integrally molded with said frame, said close together. The displaced cutting edges con 30 bars terminating in grating edges lying in a sur stitute sharp saw-tooth cutting surfaces along face substantially including one face oi' said lattice bars i4, I5. Such arrangement permits Iranie, a plurality oi` said bars having reinforc the direct molding of practical grating teeth for ing ridges extending opposltely of said grating the plastic grater, which arrangement has been edges and merging with said frame. 4. A grater of plastic composition comprising a found very satisfactory in practice both from the 35 molding and use standpoints. It is to be under frame supporting a lattice network composed of transverse series of parallel bars in substantially stood however, that other serrated or cutting edge constructions for the plastic grating sur the same plane integrally molded with said frame, face may also be utilized. Said bars being triangular in section and termi Fig. 4 illustrates a modified form of the grater, 40 nating in grating edges, said bars having reinforc wherein both sides thereof constitute grating sur ing ridges extending from the bases thereof and faces. A transverse series of bars I4’ and I5' merging with said frame. are arranged similarly to bars Ill and I5 of Fig. 1. 5. A grater comprising a frame supporting a 'I‘he bars Iii’ and i5’ taper toward both outer lattice network composed of transverse series or' surfaces of the grater. The cross-sectional ap 45." bars, said bars being substantially triangular in pearance of the bars is diamond shaped, as shown section and terminating in sharp grating edges, at I5’ in Fig. ll. Serrated grating edges I6’ and said bars having regularly spaced constrictions 22' extend on both sides of bars lll’; the grating extending to said edges to constitute a serrated edges il’ (and 23', not shown), on both sides grating surface. of bars l5’. The grating edges on each side of 50 6. A grater of plastic composition comprising the grater correspond to those in the form of a frame supporting a lattice network composed or' the invention in Fig. l, and are integrally formed transverse series of parallel bars integrally molded during the molding operation. The cross-sec with said frame, said bars being triangular in tional area of the bars I4’ and I5’ are made section and terminating in grating edges, said sufficient to impart suitable mechanical strength 55 bars having regularly spaced constrictions ex to the grater. The upper and lower grating sur tending to said edges to constitute a serrated grat face planes are preferably substantially co-exten ing surface. sive with the corresponding surfaces of the frame rI. A grater comprising a frame, a lattice net I0, as shown in Fig. 4. work composed oi' transverse series 0i' bars in sub Fig. 5 is a plan view of a further form which 60 stantially the same plane and made of plastic my invention may assume in practice. A rec material integrally molded with said frame, said tangular frame 25 encloses a lattice network 26. bars terminating in grating edges lying in a plane A handle 2l extends from frame 25, and is in~ substantially including one side of said frame, said tegrally molded therewith. The lattice network triangular bars extending in height to substan 26 comprises horizontal bars 28 and vertical bars 65 tially the other side oi' said frame, and said bars 29 containing corresponding serrated grating having regularly spaced constrictions extending to edges 30 and 3| respectively, similar to the previ said edges to constitute a serrated grating sur ous forms of the invention. As shown in Fig. 6, face. all the bars 28 and 29 contain ribbed reinforce 8. A grater of plastic composition comprising a ments S2 and 33 respectively, on the back sides 70 frame, a lattice network composed of transverse thereof. This arrangement imparts superior series of parallel bars in substantially the same mechanical strength to the lattice structure of plane integrally molded with said frame, said the grater. The openings 34 in the lattice net work 26 are accordingly somewhat smaller than bars being diamond in section and terminating in the corresponding openings I3 of the form in 75 sharp grating edges on both sides of the network, S 2,405,056 said grating edges lying in planes substantially a frame, a lattice network composed of trans including the opposite faces of said frame. verse series of parallel bars in substantially the 9. A grater comprising a frame supporting a same plane integrally molded with said frame, lattice network composed of transverse series of said bars being diamond in section and terminat parallel bars in substantially the same plane, ing in sharp grating edges on both sides of the 6 said bars being diamond in section terminating in network, said grating edges lying in planes sub sharp grating edges on both sides of the network, stantially including the opposite sides of said and said bars having regularly spaced constric frame, and said bars having regularly spaced tions extending to said edges to constitute ser constrictions extending to said edges to con rated grating surfaces. w stîtute serrated grating surfaces. 10. A grater of plastic composition comprising IBVING ROSENBLOOM.