Патент USA US2137610код для вставки
NOV. 22, 1938. J_ w_ GALLO ABRADING INSTRUMENT Filed Jan. 9, 193'? ’ 2,137,61U 2,137,610 lgatented Nov. 22, 1938 UNITED STATES PATENT OFFICE 2,137,610 ABRADING INSTRUMENT John W. Gallo, Revere, Mass. Application January 9, 1937, Serial No. 119,747 4 Claims. (CI. 29—80) My invention relates to abrading implements side of the ?le from that shown. Thus when such as ?les, whetstones and the like and it has for its object to provide an improved implement 0 the ?le is returned to the bench the calk will support the same in reversed position from that of the character indicated. More especially the invention provides an abrading implement of the character described, shown. In the embodiment of my invention shown in 5 or a holder for such an implement, provided upon the side thereof with supporting calks so that when the implement is placed upon a bench holes Ila, one near each corner thereof, each of 10 or the like the work may be slid back and forth thereon while the calks hold the implement against moving with the work. To these ends I have provided an improved abrading implement having the novel character istics set forth in the following description, the several features of the invention being separate ly pointed out and de?ned in the claims at the close thereof. In the accompanying drawing:-— Fig. 1 is a top plan view of a bench ?le con structed in accordance with this invention. Fig. 2 is a side elevation, partly in section, of the bench ?le shown in Fig. 1. Fig. 3 illustrates another form of bench ?le. The embodiment of my invention illustrated in Figs. 1 and 2 comprises a hardened rectangu lar metal ?le member ID formed with four holes ll extending therethrough, one near each cor ner, each of said holes ll being formed at its opposite ends with conical countersinks l2. The holes H are provided for the reception of screws 13 having conical heads adapted to ?t within the countersinks l2 so that the top sur faces of said heads are ?ush with or below the level of the top of the ?le. These screws I3 serve to fasten calks M in posi tion against the under side of the ?le member I 0, each calk being formed with a threaded socket l5 occupied by its screw l3; with a conical upper end that is seated Within one of the counter sinks I2 upon the under side of the ?le member, and with a conical pointed lower end. Thus when the ?le member is placed upon a bench with the calks I4 resting in engagement 45 with the latter the work to be operated upon may be shoved back and forth on the ?le member while the calks serve to hold the latter securely against displacement on the bench. The ?le member Ill may be formed, as shown, 50 with abrasive surfaces upon both sides thereof, and it will be clear that when one side of the ?le becomes dull or worn the screws I3 may be re moved from the holes II and reversed so as to secure the calks H in position upon the opposite Fig. 3 the ?le member ID is formed with four which is countersunk as at [2 at its opposite ends and also threaded. Into each hole I la is screwed a calk member Ma which may be an ordinary 10 machine screw having a pointed end and‘a countersunk head as shown. What I claim is: 1. An abrading implement comprising a file provided upon its opposite sides with abrading 1.3 surfaces, said ?le being formed with a plurality of holes extending therethrough; calk devices reversibly mounted within said holes and adapted to support said ?le upon a bench or the like with either of said abrading surfaces uppermost 20 and to hold said ?le against movement on said bench or the like while the work is moved back and forth thereon. 2. An abrading implement comprising a ?le having an abrading surface, said ?le being formed 25 with a plurality of holes extending therethrough; a screw occupying each of said holes and having a head whose top is disposed below the plane of the abrading surface of said ?le, and a pointed calk member; secured in position against the 30 under side of said ?le by said screw. 3. An abrading implement comprising a ?le having an abrading surface, said ?le being formed with a plurality of holes extending therethrough each of which is countersunk at its opposite ends; 35 a screw occupying each of said holes and having a head occupying one of said countersinks so that it is disposed below the plane of the abrading surface of said ?le, and a pointed calk member secured in position within the other countersink 40 of said hole by said screw. 4. An abrading implement comprising a ?le made upon its opposite sides with abrading sur faces, said ?le being formed with a plurality of holes extending therethrough each of which is 45 countersunk at its opposite ends and also in teriorly threaded, and a screw within each of said holes and having threaded engagement therewith, said screw having a head at one end which occupies one of said countersinks and a 50 pointed extremity at its opposite end to serve as a calk. JOHN W. GALLO.