US 2168237 A
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g- 1939. M. POLACSEK 2,168,237
\ hNeER REST PLATE on KNIVES Filed Sept. 9, 193'! INVENTOR .luaurzbe Palaase/c B Y 0% W ATTO R N EY Patented Aug. 1, 1939 UNITED STATES ATENT OFFICE 2 Claims.
This invention relates to new and useful improvements in a finger rest plate on knives.
The invention has for an object the construction of a knife which is characterized by the fact 5 that it has a cutting edge and a back edge and an arrangement on the back edge whereby one using the knife may rest his finger at several points along the back edge to assist in forcing the knife downwards to permit the user to out safely with less exertion.
Still further the invention contemplates providing a back portion upon the back edge of the knife, extending transversely thereof and formed with several recessed areas for ones finger when using the knife.
Still further the invention contemplates a modification in which a finger rest plate member is slidably mounted upon the back edge of the knife and is adapted to assume various longitudinally 20 adjusted positions for the convenience of one using the knife.
For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawing, and to the appended claims in which the various novel features of the invention are more particularly set forth.
In the accompanying drawing forming a ma-' terial part of this disclosure- Fig. 1 is a perspective view of a. knife constructed according to this invention.
Fig. 2 is a bottom View of Fig. 1.
Fig. 3 is a vertical sectional view taken on the line 3-3 of Fig. 1.
Fig. 4 is a similar view to Fig. 2 but illustrating another form of the invention.
Fig. 5 is a similar view to Fig. 2 but illustrating still another form of the invention.
Fig. 6 is a side elevational view of the knife conn structed according tothis invention, but illustrating a modified form.
Fig. 7 is a sectional view taken on the line ll of Fig. 6.
The finger rest plate for knives, according to this invention, is used in conjunction with a knife 10 having a cutting edge W and a back edge It). A back portion II is formed on the back edge I0 and extends transversely thereof and is formed with several recessed areas H N and H for ones finger when using the knife. In plan view the back edge of the knife is arranged to taper, as shown in Fig. 2. The recessed portions are of a curvature adapted to preferably fit ones finger tips. The knife blade I0 is supported in a knife handle l2 and the back portion II is arranged longitudinally of the knife blade starting immediately adjacent the inner end portion of the handle I2.
In Fig. 4 the recessed areas H ll and H are shown to be of curved contour.
In Fig. 5, the edges ll of the back portion II are formed with symmetrical contours corresponding with the shapes of the recessed areas. In other respects this form of the invention is similar to that illustrated in Fig. 4
In Figs. 6 and 7 another embodiment of the invention has been disclosed in which a knife blade I4 is illustrated supported on a handle [5. This blade has a cutting edge M and a back edge [4. A portion of the back edge M immediately adjacent the handle I5 is. formed with a pair of spaced parallel grooves I6 upon each of the faces thereof. A finger rest plate member IT has apair of resilient side walls Il and is slidably mounted on the back edge N of the knife blade. These walls l'l have projecting portions I'l engaging into the grooves 16.
The outer end of the finger rest plate I1 is formed with a recessed curved surface l8 adapted to fit ones finger tips. The back edge M of the blade is formed with serrations [9 along the area in which the finger rest plate member I! may be adjusted. These serrations H) are engageable with complementary serrations l9 formed on the inner face of the finger rest plate member i'l.
Normally, the projections l'l engage the foremost grooves 1'6. In this position the finger rest plate member 18 is fixed and cannot be moved. In order to adjust the same it is necessary that it first be pulled outwards to the dot and dash line position H in Fig. 5. In this latter position the projections l'l engage the back groove 16, and the serrations I9 are disengaged from the complementary serrations on the finger rest plate member. The finger rest plate member may now be moved forwards and rearwards to any desired position. When it is pressed inwards so that the projections ll reengage thefront grooves [6 it will be held in its new position.
It is to be understood that this invention may be applied to knives of all types, such as kitchen knives, pocket knives, knives used as curving tools, etc.
While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.
Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is-- 1. In a device of the class described, a fiat mem-' her having a pair of parallel grooves formed in both faces thereof and spaced in from one edge of said member, a U-shaped element engageable over the edge of said member adjacent said grooves, cooperative serrations formed upon the edge of said member and the adjacent face of said element for holding said element fixed upon said member, and an inwardly extending projection formed on each of the arms of said element and said projections being engageable into the innermost grooves of said pairs of grooves for holding said element in a position in which said serrations will be inter-engaged.
2. In a device of the class described, a flat member having a pair of parallel grooves formed in both faces thereof and spaced in from one edge of said member, a U-shaped element engageableover the edge of said member adjacent said grooves, cooperative serrations formed upon the edge of said member and the adjacent face of said element for holding said element fixed upon said member, and an inwardly extending projection formed on each of the arms of said element and said projections being engageable into the innermost grooves of said pairs of grooves for holding said element in a position in which said serrations will be inter-engaged, said arms of said U- shaped element being resilient to permit said element to be manually pulled outwards to engage said projections into the outermost grooves of said pair of grooves to disengage said serrations to free said element so that it may be moved to various adjusted positions along the length of said grooves.