US2448178A - Sanding tool - Google Patents

Description

Aug. 31, 1948. M. P. GLOWACKI l2,448,178

SANDING TOOL Filed Oct. 18, 1945 INVENTOR.' MATTHEW P. GLOWACKI BY'* Wd, 6M.

ATTORNEYS..

Patented Aug. 31, A 1948 A YPr.'l-.lallNT 4OFF ICE v v 21,448,118 I i ,sANmNG 'root Matthew RwGlowacki, Chicago, Ill. `"Aiiiilic,'atimitaciones is, 1945; serial No. 623,049

n2 claims. (c1. sil-4m) My invention relatestotools oriniplements for applying sandpaperk or` cloth to articles or objects in shops. oiicesand homes-.andone' ofits' objects is to provide a tool which is fan superior tol the sanding blocks commonlymsed fdrl this purpose.

A further object is to devise a sanding tool which may be held with a fullhand grip and'thereforeoperated steadilyand evenly. f

`Another objectisto providea tool of therabove character which affords. a hcildV at: aA distance above andto therea-r. ofthe work,-.se::that the fingers do not` touchthesame toafbeecme soiled Lfrom dust formed bythe sanding operation.

Astill furtherobjectis to design the tool with an applicator whichis .low andpermits theprogress of. theisanding voperation tobeeasilynoted.

4An additionalobject is.to feedfthe sandpaper erl emery cloth from a supplyrroll of the same carriedxby the tool, enabling many renewals-.of the sanding-'medium in the-.zoned application to be made before a new supply-of the same. Ais required.k

An important ,object is to construct the novel tool along lines lof simplicity1 and durability.

With the above objects in View and any others which may suggest themselves from the description to follow, a better understanding of the invention may be had by reference to the accompanying drawing, in which- Fig. 1 is a side elevation of the tool;

Fig. 2 is a top plan view; and

Fig. 3 is a front end view.

In accordance with the foregoing, specific reference to the drawing indicates the handle of the tool at i0, the same being of wood or plastic material and tapering in forward direction to receive a ferrule II. A metal shank I2 projects in forward direction from the handle, the material of the shank being sturdy strap stock. The shank takes a rounded downward turn I3, then a short forward bend I4, and finally a somewhat raised forward extension I5 of the bend I4. Y

The shank I2 receives an elongated base plate I6 from below, the bend I4 resting on the plate and being rigidly secured to the same by a rivet I'I, which terminates flushly in the bottom of the plate. The latter is also of heavy strap stock and considerably wider than the shank, as is evident from Fig. 2. The f-ront end of the plateis plain, while the rear portion is curved upwardly, as indicated at I8, to combine with the shank turn I3 in the formation of an open, part-circular rec'eptacle. The shank l2 is spaced from the plate portion I8 to define a passage for a strip of adhesive material, as hereinafter described. f

v"The receptacle-just referred to forms a retainerv for a roll 'I9 of emery cloth from which a strip 2S is trained around the curved rear portion-i8 .of the base'plate f6 Vto extend `forwardly underneath the same :as-indicated at 2 l. The strip terminates Witlra'return fold 22 over theforwardr end portionof the plate, and is held fast to4 the same by a's'etl screw v2i! directed downwardly through' the shanlcextensionl I5. A spring blade'24 from the handIe-'fbearsagainSt the roll I9 and-holds the .same fast as the strip 2|- is" drawn taut before'it is folded and made fastby the set screw. The" blade 24-is` arranged rinv trigger-'like relationship with the handle, whereby anV operator Vmayl grasp the handle with .one hand while releasing` the blade i4'A withy a'ilngerv of the same' hand inl a similar mannerto the operatorof the' trigger of apistol lock. This: feature permits the operator to roll or unroll thev emery cloth with theother hand as for examplewhentit is vdesired to tighten the cloth across thebcttomsurfaceY of theplate or to draw an unused section of the cloth into position across the'v bottom of the plate. Y

`With the tool constructed as just described, it is ready for a sanding applicati-on to any suitable article Ior object, the plate I6 forming a rm applicator for this purpose. At the same time, the hand is not over the applicator, as in a sanding block, to interfere with the View of the sanding operation and subject the fingers to soiling from the dust which is formed. The handle l0 positions the hand well to the rear and at an elevation from the zone of operation. Also, the handle affords a full grip for the hand to hold the tool firmly and steadily. While a substantial length of the emery cloth is provided beneath the applicator, the roll I9 stores a plentiful supply of the cloth in readiness for the drawing of a new length of sanding strip whenever required, so that the tool -may be used over a long period cron many occasions With a fresh sanding medium before the emery cloth roll will have to be replaced. As each length of sanding strip is drawn, the roll expands by its own tension, filling the receptacle until the roll reaches its last turn.

The simplicity of the novel tool is also signicant. Thus, the shank I2 not only forms a support for the base, but also requires no extra part to form the emery cloth roll receptacle. Further, the single rivet I1 in the center of the base suiilces to secure it firmly to the shank, while a possible tendency for the base to turn is counteracted by the pressure of the set screw 23 and spring blade 24 through the emery cloth against the correspondingly-located end portions of the base. Further, the receptacle for the emery cloth roll, by its enclosing form, is capable of retaining a roll without the need of a spool or core for the same. Further, the spring blade 24 performs the dual function of packing the roll firmly in the receptacle and pressing the issuing strip tightly against the rear end of the base plate. Needless to say, a slight retraction of the blade will release the roll and strip from pressure when a length of emery cloth is to be drawn forward. Further, the low base enables the tool to reach into short cavities, such as occur in dies. Finally, the novel tool-shown full-size in the drawing-is a small and handy accessory capable of being kept in a bench or desk drawer and used with facility ,by the average person.

While I have described the invention along specic lines, various minor changes or refinements may be made therein without departing i from its principle, and I desire to consider such changes and refinements as coming within the scope and spirit of the appended claims.

Iclaim:

1. An abrading tool comprising a plate with an applicator surface on the bottom thereof, a shank xed to said plate intermediate its ends against movement toward and away from said plate, said shank and plate having portions de- Ining a receptacle for an associated roll Vof abrasivematerial, said receptacle being open at its rear extremity to afford a passage for a portion of said material to be drawn across said surface, a substantially rigid element on said shank extending forwardly of its connection from said plate and spaced from the latter to define a slot for the free end of said material, a member in threaded engagement with said element and adapted to clamp said end against the top of said plate, a trigger-like spring blade carried by said shank and extending downwardly therefrom to f clamp the material against said plate at a point beneath said passage, and a handle on said shank extending rearwardly from said receptacle,`

whereby an operator may grasp said handle with 4 one hand while releasing said blade with a linger of said hand.

2. An abrading instrument comprising a bottom member having a rearward portion extending upwardly, a shank member securely attached to said bottom member intermediate the ends thereof, said shank member extending upwardly and rearwardly from the point of attachment to the bottom member and terminating in a handle member, said bottom member and vshank member forming therebetween a chamber for the reception of a roll of strip abrasive material, an elongated spring member supported at one end by the handle member and biased toward and against the rear portion of the bottom member to secure a portion of the abrasive strip thereto, and a clamping means adjacent the forward end of the bottom member to clamp the free end of the strip of abrasive material thereto.

MATTHEW P. GLOWACKI.

REFERENCES CITED The followingv references are of record in the le of this patent:

' UNITED STATES PATENTS Number Name Date 466,337 Friesk Jan. 5, 1892 752,475 Smith Feb. 16, 1904 824,981 Domagola July 3, 1906 842,579 Peters Jan. 29, 1907 872,568 Linderoth Dec. 3, 1907 975,590 Weber Nov. 15, 1910 1,501,192 Severus July 15, 1924 1,566,164 Norton 1 Dec. 15, 1925 1,575,554 Dufioth Mar. 2, 1926 1,855,635 Kelley Apr. 26, 1932 1,944,727 Blomstrom Jan. 23, 1934 2,102,745 Read Dec, 21, 1937 2,197,224 Peterson Apr. 16, 1940 2,248,884 McAdams July 8, 1941 2,252,190 McAdams Aug. 12, 1941

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