US1536938A - Shaving device for phonograph records - Google Patents

Description

' c, SCHIFFL SHAVING DEVICE FOR PHONOGRAPH RECORDS Filedllan. 15. 192s INVENTOR.

Patented May 5, 1925.

UNITED STATES PATENT oer-Ice.

CHARLES, SGHIFFL, 0F MONTCLAIR, NEV] JERSEY, ASSEGNOR OF QNE-HALF TO JOHN A. MVICKAR, OF NEW' N. Y;

SHAVIING. DEVICE FOR PHONOGRAPH RECORDS.

Application filed January 15,, 1.323. Serial Ho. 612.624.

To all whom it may concern:

Be it known that L CHARLES Sorrrnrn, a citizen of the United, States; and a resident of Montclair. New Jersey, have invented certain new and useful Improvements in Shaving Devices for Phonograph Records, of which the following is a specification.

This invention relates to devices for shaving phonograph records such as wax records whicl i' nustbe shaved or resurfaced when used for a new subject and it has for an object to provide a device of this character by means of which a smooth and uniform surface can readily be obtained. which is universal in application, can be used on a record without removing it from the phonograph turntable, is simple and inexpe ive to manufacture and which may be arrangedto use safety razor blades for the cutting tool. These and other objects of the invention will be more particularly understood from the following specification and the accompanying drawings, in whioln 1. is a plan view of a phonograph turntable with the shaving device in place. Fig. 2 is an elevation corresponding to Fig. 1, Fig. 3 is a sec. tional elevation on line 3.-3 of Fig. 2, Fig. 41: shows a type of cutting blade that may be used with this device, and Fig. 5 shows an alternative detail. 1

Tax records are, in commercial use for making temporary records which in time become defective but when shaved or resurfaced these records may be used over again and it is the purpose of the present inven tion to provide inexpensive means for shaving records of this kind. This consists of a device controlled by hand which guides a cutting edge over the surface of the record as it is rotated on the turntable. The cutting edge is curved or bowed with the concave side turned in the direction of rotation of the record. This edge is also deflected vertically in the direction of rotation of the record. It is preferred that the cutting edge be deflected from the radial plane of the record and a guide may be provided for this purpose. The cutter is positioned by a ban die as outlined which may be blanked from a single piece of sheet stock and thus reducing the cost of manufacture.

Referring to the drawings. 11 represents a turntable as found in the ordinary disc type of phonograph. 12 is a wax record placed on the turntable and centered on the stem 13. The usable space on the record is indicated by 15 extending from the edge up to the dotted circle 14: and this, is the space over which the shaving edge operates.

The shaving device consists of the handle 16 formed integral with the head 17 to which the blade 18 is clamped by the screw 19 plate 21 and wing nut 20.

The handle 16 rises with a convenient in cline so that the cutting edge as shown in Fig. 3 at 18 is inclined from the vertical in the direction of rotation as indicated by the arrow and in order that this inclination may not approach the vertical the wings 22 and are formed integral with the head 17 and am nged to engage the record; as the vertical is approached as will be understood from Fig. 3.

it is preferable that the cutting edge be deflected from the radial line of the record for instance the deflection between the line a drawn through the radial axis and the line 7) deflected therefrom and passing through the plane of the cutting edge; For this purpose the guide 24 slotted as shown to the stem 13 may be provided as an integral part of the head 17. This guide, it will be. noted. will always maintain the displacement of the cutting edge in whatever position the device'may be used. I wish to point out however. that this guide is only a matter of convenience and can be dispensed with where care is exercised in the use of the device.

By this construction it will be noted that the cutting blade may be constructed similar to a safety razor blade as indicated in Fig. 4, and when clamped in position is bowed on the longitudinal axis as indicated in Figs. 1, 2 and 4, also that it is inclined from the vertical. This removes the sharp corners of the cutter from the record and provides a curved cutting edge in contact with the record which can easily be moved back and forth from the edge to the centre leaving a smooth, uniform surface. By inclining the cutter vertically it does not dig into the record but instead lifts only a light shaving against which the turntable makes a satisfactory drive.

If the plane of the cutter were placed on the line of the radial axis the shavings would tend to accumulate behind the cutter and cause vibration of the latter resulting in an unequal or wavy surface The shavings of wax tend to congeal which also makes it desirable to remove them or preventtheir accumulation. By deflecting the cutting edge as indicated in Fig. 1, there is a spiral action tending to move the shavings towards the outer edge which is assisted by the cen tritugal action of the turntable as it rotates at speed.

Attention is called to the fact that the cutter may be double edged as shown, either edge being used as desired. This cutter may be positioned by dowels through the openings which, however, are not shown in the drawings.

The construction that has been described relates to a device provided with a handle which may be manually guided over the record. The construction in Fig. 5 shows a modified handle which may be used when the device is operated by a mechanism, such for instance, as is disclosed in U. S. Patent 1,389,429, issued August 30, 1921. In this case the socket 31 is interchangeable with the recording head and may thus be moved by the tone arm across the record. The weight 32 is slidable on the socket 31 so that the pressure on the cutting edge may be varied.

The term handle or holder which appears in the specification and claims is used in a generic sense to include the guiding member whether operated by hand or by a mechanism.

Having thus described my invention, I claim:

1. A record shaving device of the class describcc comprising a handle with a head, a flat elongated cutter supported by said head and arched on its longitudinal aicis.

2. A record shaving device of the class described comprising a handle supporting a flat elongated cutter inclined from the vertical, said cutter arched on its longitudinal axis.

3. A record shaving device of the class described comprising a handle. supporting a longitudinal cutter, said cutter engaging the surface to be shaved and curved with its concave side in the direction of the shaving action.

4. A record shaving device of the class described comprising a handle with a head,

a cutter supported by said head and engaging the surface to be shaved, said cutter inclined from the vertical and concaved in the direction of the shaving action.

5. A record shaving device of the class described comprising a handle with a head, a cutter supported by said head, the normal position of said cutter being inclined to the vertical and means for removing said cutter from the surface to be shaved as itv approaches the vertical.

6. A record shaving device of the class described comprising a handle with a head, a cutter supported by said head in a position inclined to the vertical wings projecting from said head and arranged to engage the surface to be shaved when the vertical angle oi said cutter is changed.

7. A record shaving device or the class described comprising a holder and a tlat blade, said holder having a curved side and means for clamping said blade to said curved side.

8. A record shaving device oi the class described comprising a curved and an in clined holder and a fiat blade and means "for clamping said blade to said holder.

9. A record shaving device 01" the class described conn'n'ising a holder and a longi tudinal cutter arranged to engage a disc record. the edge of said cutter being on a line at a substantial angle to the radial line of said record.

10. A record shaving device of the class described comprising a holder and a longitndinal cutter. means for moving said cutter over said record and means for maintaining the edge of said cutter on a line at a substantial angle to the radial line of said record.

11. A record shaving device of the class described comprising a holder and a longi tudinal cutter for shaving records of the disc type, an extension troni said holder provided with a longitudinal slot whereby the angular position of said cutter is maintained as it is moved over the surface to be shaved.

Signed this 17th day of November, 1922.

CHARLES SCI-IIFFL.

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