US1939430A - Sampling tool for pulp or the like - Google Patents

Description

Dec. 12,19 3. "'ABANDR Q "1 ,939,430

SAMPLING TOOL FOR PULP OR THE LIKE Filed Dec. 16, 1931 .7 filial-neg Patented Dec. 12, 1933 UNITED STATES SAMPLING TOOL FOR PULP OR. THE LIKE Arthur Burton Andrews, Auburn, Maine Application December 16, 1931 Serial No. 581,418

2 Claims.

This invention relates to sampling cutters and particularly to a cutter for removing samples from baled pulp or the like.

In the shipment of pulp and particularly where such shipment is made by boat, the matter of the departure of the ship, thereby causing serious losses.

In practice the samples are cut in the form of plugs four inches in diameter and four inches deep, the same being removed usually in two or three bites or sections according to the hardness of the pulp. The usual pulp bales are very hard and resistant and even when equipped with the best possible tools, samplers have great difficulty in keeping their tools in operation. Breakages are frequent and constitute a considerable item of expense, as well as the more serious matter of delay in getting the finalsample.

Various cutters are on the market and in use at the present time, the type generallyaccepted for such work being a shank having an axial screw lead for penetrating the pulp and a spaced parallel knife rotatable about the tool axis to cutout the cylindrical plug desired. The general type of these cutters has been accepted as standard in spite of the difficulties of the various individual tools available. i

According to my invention I provide a cutter of this same standard type but of such construction that it is capable of rapid and continuous use with a minimum of breakage and with a maximum of convenience in the replacement'of parts if broken or needed sharpening.

As illustrative of my invention I have shown in the accompanying drawing such a cutter. In this drawing: a

Fig. 1 is a view from the blade side.

Fig. 2 is an elevation at right angles thereto.

Fig. 3 is a figure in the opposite direction from Fig. 1, and

Fig. 4 is an end view of the tool.

My tool comprises a shank 1 of any desired form or shape usually adapted to be chucked in an electric or other power drill. Integral with the shank isan enlarged portion 2 from which is extended an integral lateral portion 3 forming between these parts an elbow or shoulder portion 4. The tool is recessed on its rotative axis as at 5 to receive a screw-like lead 6 clamped in the portion 4 by a clamp plug '7. Transversely the tool is provided with a squared aperture 8 at right angles to the axis of rotation of the tool and extending through the portions 3 and 4, is faced off as at 3 to form an abutment for a shoulder 9 of the blade 10. This blade is formed with its inner and outer faces curved on arcs concentric to the axis of rotation of the tool, so that the blade 10 offers a minimum of resistance to the pulp 66 fibre. At its outer end the blade is slightly outwardly beveled as at 11 and provided with a rear- Wardly inclined cutting edge 12.

The shoulder 9 is provided with a squared shank l3 snugly fitting the aperture 8 and 70 clamped as at 14 and 15 on two of its faces so as to be firmly held against any twisting tendency as the blade 10 is forced into the pulp. The blade 10 therefore has a double clamped support for its squared shank 13 and as the shoulder 9 bears against the face 3 of the lateral 3 it is further supported against rocking strains or tendencies that might develop.

The tool is simple but is capable of construction with great strength. By making the arm 3 integral with the shank through the portion 4,

a tool socket is provided capable of withstanding the most severe strains. By supporting my knife or cutter blade 10 against the end face of this arm I make possible a considerable area of support and by making the shank 13 a squared rigid member with flat bearing faces, I obtain a basis of maximum resistance to twisting tendencies of the blade and provide independent fiat faces for clamping.

While therefore my tool conforms to general type and is capable of use in the usual manner, it provides for such factors of strength that such tools have sustained continuous hard operation very manytimes the life of the ordinary tool and 9 with a minimum of minor difficulties as in blade replacement, point replacement and in otherwise'keeping the tool in efficient operation under the strenuous demands necessarily made on it.

What I therefore claim and desire to secure by Letters Patent is:

1. A sampling tool comprising a shank and an integral angular head having a lead socket disposed in the head axially of the shaft, the angular portion of the head consistingof a radial arm having anend abutting face and a socket centrally through said arm and at right angles to said lead socket, a cutter blade having a portion adapted to abut the arm end and having inner and outer contour surfaces of rotation conportion adapted to abut the arm end of said angular head and having inner and outer contour surfaces of rotation concentric with the shank axis and having its outer end rearwardly tapered, and a shank extending through said socket vat right angles to the blade rigidly inwardly supporting said blade parallel to said tool axis and means for locking said blade.

ARTHUR BURTON ANDREWS.

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