Патент USA US2136595код для вставки
WL i5» 1938.. M. i.. ROGERS 2,136,595 CLEANING TOOL Filed sépt. 25, 1937 INVENTOR. HQGH L. ROGERS BY ` .Patented Nov. 15, 1938 2,136,595 UNITED STATES PATENT `OFFICE 2,136,595 CLEANING TOOL Hugh L. Rogers, Albion, Pa. Application September 25, 1937, Serial No. 165,717 9 Claims. This invention relates to a tool for removing scale, rust, paint, and the like, from the surfaces of objects, and particularly from surface areas Which are not readily accessible to the usual 5 cleaning tools. For the purposes of illustration, the present invention will be described in connection with the removal of oxide scale from metal welds, its ing such tools and hammers. ' to their action when the weld is in a corner, such as between three or more angularly disposed met steel. al plates. rlî'he present invention has for its principal ob `iects the provision` of a tool which is arranged to strike a proper blow for shattering and com pletely removing the scale fromthe weld surface without damaging the metal or the Weld; which notl only shatters and loosens the scale from the surface but also removes it out of the zone of operation of the tool; which impels itself along gated cylindrical weights formed of polished tool Each of the weights is bored axially from one end to receive the end‘of one or more asso ciated wires and the wires are ñxedly secured to the weights so as to form with their associ ated weights substantially unitary structures or inertia chippers. The length of each of the weights 8 is about three-quarters of the distance between the vi bratory anvil 3 and the end plate 5. The weights are accommodated in the body 2 side by side with actance forces occasioned by its impact, and at only slight operating clearance. Thus, each weight is guided by adjacent weights for recip a traverse speed as high as is consistent with rocation endwise within the body and relative the weld or area being cleaned, due to the re thorough and efficient cleaning; and which is to the other Weights, and no weight can move a . arranged so as to adapt itself to the contour of the surface from which the scale is to be re moved. sufiicient distance endwise to pass out of lthe guid Other objects and advantages will become ap parent from the following specification, wherein reference is made to the drawing, in which: Fig. l is a side elevation of a tool embodying the principles of the present invention and con nected to a pneumatic hammer for operation " ranged for connection to the usual pneumatic 5 hammer H in the customary manner of connect largely to the type of blow imparted thereby and also to the impossibility of subjecting the weld paint, rust and the» like, being apparent there from. Heretofore, the removal of oxide scale from metal Welds has been found very diflicult, and no entirely satisfactory tool therefor has been provided. Multiple chisels operated by a pneu matic hammer have been used but have not proven of sufficient advantage over the usual hand methods to warrant general acceptance, due il.) cylindrical sleeve. Integral with or connected to the body member 2 at one end is a vibratory anvil 3 which may be in the form of a hard steel plate. The anvil 3 has a stem 4 which is ar The end of the body opposite from the anvil is closed by a suitable plate 5 which may be of comparatively light metal and which is provided 10 with a plurality of apertures 6 which are pref erably uniformly distributed about the plate and extend parallel‘to the axis of the body 2. Chip ping needles 'l are mounted inthe apertures 6, respectively, for individual reciprocation there 15 in with respect to each other vand to the body. Each needle 'l extends from Within the interior of the body to the outside and is provided with greatly enlarged butt ends within the body. These enlarged butt ends are preferably elon uses for other purposes, such as the removal of 10 (Cl. 29-81) ing relation. The needles l are preferably of piano or spring wires of about 0.045 inch in diameter. In the form illustrated, the weights are about 1%," long and 5%” in diameter, the wires being of suiîicient length to extend about 4” beyond the plate 5 in their most extended condition.` The rod 4 is suitably connected to the hammer thereby; H in the usual manner so that the anvil 3 has Fig. 2 is an enlarged longitudinal sectional view of the tool illustrated in Fig. 1; imparted to it the rapid successive impacts ofl Fig. 3 is a cross sectional view of the tool and is taken on a plane indicated by the line 3_3 in Fig. 2; and Fig. 4 is a somewhat diagrammatic illustration of the tool and one of its operating characteristics. Referring to the drawing, the tool indicated generally at I, comprises a body member 2 which 55 is preferably in the form of a relatively heavy the hammer H. 'I'he hammer is preferably one capable of striking about 3700 blows per min ute so that the anvil becomes. in operating ef fect a vibratory member. ‘ 5.0 The specific dimensions above given have been found particularly suitable for the removal of oxide scale at Welded joints between angularly disposed` steel plates, though obviously varia tions can be made in the dimensions and rapidity „ 2 2,136,595 of operation of the hammer, depending upon the striking the weights and impelling the weights use to which the device is to be put. and needles endwise toward their working ends. 3. A device for the purposes described compris ing a body member, said body member having a portion with holes therethrough, needles ñtting in said holes for free axial reciprocation and ` In operation, the tool is positioned with the working ends of the needles engaging the weld or surface to be cleaned. In case of irregularities in the contour of the surface, each needle auto matically accommodates itself to the particular surface area which it engages so that, regardless of the irregularities of the surface, each portion is engaged. 'I'he tool and coaxial hammer pref erably are tilted at an angle to the plane of the surface being cleaned, as illustrated in Fig. 4. The pneumatic hammer is operated, whereupon _ having working end portions extending beyond said portion of the body and having butt end portions extending in the opposite direction from said portion of the body, individual weights on the butt end portions of diiferent needles and a at the same time effect a lateral whipping action at their free ends. These concurrent and re vibratory anvil spaced from said portion of the body and normally beyond the weights in a direc tion away from the working ends of the needles, and arranged for impact with the ends of the 15 weights adjacent to the anvil for impelling the current impacts and whipping actions shat ter and immediately remove the scale. Mean position. the needles reciprocate rapidly individually and needles endwise when the needles are in one while, the tool and hammer creep in a direction toward the applied force of the hammer, as indi cated by the arrow A in Fig. 4. This creepage is such that the operator merely holds the ham mer lightly in inclined position with the free ends of the needles 1 against the surface to be cleaned and as the surface is cleaned, the device creeps away therefrom onto the contiguous uncleaned surface. 4. A device for the purposes described and comprising a body member, a plurality of resil iently flexible needles carried thereby and mov able relative to each other endwise, weights on the needles and forming therewith inertia chip pers, means on the body supporting the chippers for limited axial movement independently of each 25 other, and a vibratory anvil for impelling the The particular impact and whipping action for fracturing and removing the oxide scale is very 30 effective. The particular -impact appears to be 5. A device for the purposes described compris ing a hollow body having one end in the form of an anvil, a plurality of free and independently 30 caused by the fact that only one or two of the weights 8 are. struck by the anvil 3 at any given instant so that the full force imparted to the anvil by the hammer is concentrated on one or Co Ul two needles. The kinetic energy thus developed in each weight 8 drives the associated needle for wardly with a sharp and forceful impact which is concentrated on a very small scale area and is sufficientr to cause the associated needle to bow laterally and ilex when the end strikes against the surface to be cleaned. Reilexure of the resilient needles drives the weights 8 toward the anvil 3 at a comparatively high velocity, causing them to strike the anvil and rebound. The rebounding force of the weights from the anvil is accom panied by the additional energy added by another impact of the anvil, which additional impact aug ments the striking force of the needles on the scale. Thus, with a relatively small hammer, very 50 sharp and concentrated blows are delivered to the surface. The whipping action of the needles lat erally tends to brush off the scale or material as soon as it has been shattered by the impact of the needles. 55 Having thus described my invention, I claim: l. A device for the purposes described compris ing a body member, a plurality of iiexible resilient needles mounted in the body for reciprocatory movement relative to each other longitudinally, 60 said needles having working ends, a vibratory chippers axially. reciprocable weights in the body extending lengthwise thereof and arranged side by side in mutually guiding relationship to each other for maintaining each other in substantially parallel paths of travel lengthwise of the weights, each of said weights being engageable at one end with the anvil when in one position, and relatively resilient needles operatively associated with the weights for movement axially thereby when the weights are impelled in one direction by the 40 anvil. 6. A device for the purposes described compris ing a hollow body having one end in the form of an anvil portion, a plurality of free weights in the body extending lengthwise thereof and independ ently reciprocable endwise and arranged side by side in mutually guiding relation to each other for maintaining each other in their respective paths of travel endwise, each of said weights being engageable at one end with the anvil portion 50 when in one position, means limiting all of the weights to movement endwise between the same limits, which limits are spaced apart less than the sum of the lengths of any two weights, and nee dles carried by the body and operatively asso ciated with the weights for movement endwise thereby in a direction away from the anvil. 7. A scale removing tool comprising a tuft of elongated resilient members extending freely (30 from a guiding and supporting body in the same general direction, each capable of reciprocating anvil positioned in the path of reciprocation of the needles and arranged for imparting blows movement in said direction relative to the tuft as endwise to the needles in spaced relation to their working ends and in a direction toward the work reciprocating power hammer for imparting rapid 65 ing ends. a mass, and means adapted for connection with a the weights for limited reciprocating movement endwise movement to different members at diifer ent times. 8. A scale removing tool comprising in com bination, a hollow body, a plurality of elongated resilient members extending freely from the body 70 in substantially the same direction, each capable of movement in the body into endwise abutment with a portion of the body, and a portable power axially of the needles, and a vibratory anvil at hammer connected to the body in a manner to 2. A device for the purposes described compris ing a body member, a plurality of relatively resil ient needles mounted in the body member for endwise movement relative to each other, said 70 needles having working ends, weights on the op posite ends of the needles, means for supporting said opposite ends of the needles positioned for impart rapid endwise movement to different 75 2,136,595 members at different times, through the interme diary of said body portion. 9. A device for the purposes described com prising a body member, a plurality of needles Ul guided for reciprocatory movement in the body member and relative to each other lengthwise of the needles, said needles having Working ends 3 and each having a movable elongated weight larger than the Working end and in spaced rela tion thereto, and an anvil adapted for connection with a power tool for imparting axially directed impelling forces to the different needles at differ 5 ent times. HUGH L. ROGERS.