US2076776A - Abrading tool - Google Patents

Abrading tool Download PDF

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Publication number
US2076776A
US2076776A US27551A US2755135A US2076776A US 2076776 A US2076776 A US 2076776A US 27551 A US27551 A US 27551A US 2755135 A US2755135 A US 2755135A US 2076776 A US2076776 A US 2076776A
Authority
US
United States
Prior art keywords
wires
hub
tool
abrasive
notches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US27551A
Other languages
English (en)
Inventor
John B Hadaway
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
United Shoe Machinery Corp
Original Assignee
United Shoe Machinery Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United Shoe Machinery Corp filed Critical United Shoe Machinery Corp
Priority to US27551A priority Critical patent/US2076776A/en
Priority to FR796005D priority patent/FR796005A/fr
Priority to DEU13123D priority patent/DE664671C/de
Application granted granted Critical
Publication of US2076776A publication Critical patent/US2076776A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D87/00—Edge or heel cutters; Machines for trimming the heel breast
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/02—Expansible drums for carrying flexible material in tubular form, e.g. expanded by centrifugal force

Definitions

  • This invention relates to abrading tools and is herein illustrated as embodied in a rotary abrading tool suitable for such uses as, for example, the bufiing or scouring of breast surfaces of Louis heels.
  • the tool illustrated herein is of the type disclosed in United States Letters Patent No. 2,018,671, granted October 29, 1935 upon the application of James L. Hildebrand.
  • the tool of the present application consists of a sleeve of abrasive material which is yieldably supported upon a plurality of elongated resilient members, illustrated hereinas wires, extending within and supporting the sleeve.
  • Each of these Wires at one of its end portions is secured to a hub adapted for attachment to a rotary spindle, the opposite ends of the wires being free to flex under the pressure of the work.
  • the free ends of the wires provide a particularly yielding and resilient support for the outer end of the abrasive sleeve, enabling this portion of the sleeve to conform readily to the varying contours of the work.
  • the illustrated tool is provided with means for preventing localization of strain at the supported ends of the elongated resilient members resulting from stresses set up in the course of operation of the tool.
  • the elongated resilient members consist of Wires
  • the means for preventing such localization of strain consists of a disk-shaped memher for supporting the wires against forcesv tending to bend them inwardly.
  • this disk-shaped member is provided with notches to accommodate the respective wires, which notches serve to hold the wires against forces tending to twist them relatively to the axis of the tool as well as against forces tending to bend the wires inwardly.
  • the means for securing the wires in position is constructed and arranged to facilitate the ready removal and replacement of the individual wires.
  • Fig. 1 is a view in longitudinal section of the improved tool mounted'upon a rotary spindle;
  • Fig. 2 is a View in perspective of the improved tool without the abrasive sleeve
  • Fig. 3 is a view showing the tool in operation upon 'a, heel breast.
  • the abrasive element of the improved tool consistsof a tube or sleeve ID of abrasive sheet material, for example emery cloth, which may be reinforced on its interior by tough, heavy paper.
  • the tube I0 is flexible and; conforms under pressure to the contour of the work. It may be, made by rolling fiat sheet material into the desired shape and securing the ends together by cement.
  • the abrasive sleeve I0 is supported upon a plurality of elongated resilient members or springs in the form of wires l2 which are arrangedas elements of a tubular or cylindrical surface. Each of the wires I2 is secured at one of its end portions to a hub 14, the opposite or outer end of the wire being free.
  • the wires 12 when not surrounded by the abrasive sleeve l9, define a tubular surface which is frusto-conical. This is accomplished by forming the hub M in the shape of a frustrum of a cone. In the periphery of the hub are formed a plurality of notches l8, each of which is occupied by the end portion of one of the wires l2. These notches conform in direction to the slope of the frusto-conical surface defined by the wires. l2 when in their.
  • each of the wires is formed with an offset or hook which engages the hub M.
  • this offset consists of an end portion 25 which is hooked over the inner and smaller face of the hub Id.
  • a stem 26 upon which is formed a disk 28 having a plurality of notches 30 in its periphery for receiving the wires from the disk 28 is a tapered extension 32 of the stem 26 for preventing excessive deflection of the wires l2.
  • the end of the extension 32 is squared, as indicated by the reference character 34, to accommodate a socket wrench which may be employed to tighten the threaded stem [6 in the rotary spindle.
  • the spindle which carries the improved abrading tool comprises a tubular shaft 36.
  • a rod 38 Slidably carried within the shaft 36 is a rod 38 which carries a pair of clamping bars 40, each of which has alug 42 extending into a re- 2, respectively. Extending cess formed in the rod 38.
  • the bars 40 extend lengthwise of the shaft 36 within grooves formed in the rod 33 and the outer ends of the bars 40 extend over the abrasive'cover l0.
  • Each of the bars 40 has a tapered or wedge-shaped outer surface 44 which cooperates with a frusto-conica1 cam surface formed internally upon the adjacent end of the shaft 36 to urge the outer ends of the bars 40 into clamping engagement with the abrasive cover
  • a compression Spring :50. which is contained within a diametrical bore in the rod 38 tends to separate the bars 40 and tohold the wedge surfaces 44 against the frusto-conical cam surface on the shaft 36.
  • a longitudinal slot 94. which slidably engages the tip of a screw SZthreaded in a collar 96 and extending throughan opening in the shaft 36.
  • the shaft 36, together'with the clamping mechanism associated with it, is identical with the shaft and clamping mechanism already disclosed in United States Letters Patent No. 2,058,467, granted October 27,1936, on application of Norwood-H. Knowlton, to which patent reference may be had for a more complete disclosure of the shaft and clamping mechanism.
  • the tool without the abrasive cover l assumes the form shown in Fig. 2.
  • the cover ID the tool is first unscrewed fromthe spindle and the abrasive cover is slipped over the steml6, nut 24 and clamping collar 20, forcing the wires down into the notches 30.
  • a rotary spindle which may be of the type illus-- trated herein or which, if desired, may consist of an ordinary spindle having a suitably threaded recess formed in its outer end.
  • a rotary spindle which may be of the type illus-- trated herein or which, if desired, may consist of an ordinary spindle having a suitably threaded recess formed in its outer end.
  • a heavy rubber band may be employed for this In may cases, however, the 'useof the purpose.
  • the direction of rotation of the spindle, as indicated by the arrows on the several figures, should be such as to tend to' tighten rather than to loosen the threads of the stem IS in the spindle.
  • Fig. 3 illustrates the operation of the tool upon the breast surface of a heel H of a shoe S.
  • the disk 28 supports the wires 12 internally at a locality adjacent to but spaced from the hub I4; it does not prevent fiexure of the wires but serves rather to distribute the fiexure along the length of the wires, thereby preventing localization of strain in the wires adjacent to the hub.
  • the forces acting upon the wires tend not only to flex theminwardly but also, by reason of the frictional drag of the Work against the abrasive cover,
  • a rotary abrading tool comprising a plurality of elongated yieldable members adapted to support an abrasive cover, means for supporting one end of each 'yieldable member, said supporting means being constructed and arranged for attachment to a rotary spindle, and means engageable with each of said members at a locality spaced from the supported ends of said membersfor preventing the localization at the supported ends of said members of strain resulting from forces set up in said members in the course of operation of the tool.
  • a rotary abrading tool comprising a plurality of elongated springs adapted to support an abrasive sleeve, said springs-being arranged as elements of a tubular surface, means for supporting each of said springs at one end of said tubular surface, the opposite ends of said springs being'free,
  • a rotary abrading tool comprising a pluralit of wires arranged as elements of a tubular surface for providing resilient support to an abrasive sleeve, a hub adapted for attachment to a rotary spindle, said wires being secured tosaid hub at one end of said tubular surface, theoppositeends of said wires being free to flex under pressure of the work, and a support extending from said hub within said tubular surface, said support having a circular periphery in which is formed a plurality of notches, said notches supporting said wiresat a I locality spaced from the secured ends of the wires conical shape of the hub, each of said notches beingoccupied by an end portion of one of said wires, the remaining portions of said wiresextende ing from the
  • a rotary abrading tool comprising a sleeve'of flexible abrasive material, a plurality of wires resiliently supporting said sleve from within, a hub adapted for attachment to a rotary spindle, means for securing an end portion of each of said wires to said hub, and a support extending from said hub and having a disk for supporting said wires intere nally at a locality adjacent to but spaced from said hub to prevent the localization of strain in said wires adjacent to said hub.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Cleaning In General (AREA)
US27551A 1935-06-20 1935-06-20 Abrading tool Expired - Lifetime US2076776A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US27551A US2076776A (en) 1935-06-20 1935-06-20 Abrading tool
FR796005D FR796005A (fr) 1935-06-20 1935-10-07 Outil à verrer les gorges de talons louis xv
DEU13123D DE664671C (de) 1935-06-20 1935-10-15 Ausglaswerkzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27551A US2076776A (en) 1935-06-20 1935-06-20 Abrading tool

Publications (1)

Publication Number Publication Date
US2076776A true US2076776A (en) 1937-04-13

Family

ID=21838374

Family Applications (1)

Application Number Title Priority Date Filing Date
US27551A Expired - Lifetime US2076776A (en) 1935-06-20 1935-06-20 Abrading tool

Country Status (3)

Country Link
US (1) US2076776A (fr)
DE (1) DE664671C (fr)
FR (1) FR796005A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2440856A (en) * 1945-01-29 1948-05-04 John J Bailey Finishing device
US3545142A (en) * 1968-05-24 1970-12-08 William E Sullenberger Abrading implements
US4196548A (en) * 1978-04-10 1980-04-08 Hahn Norman G Sanding apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2440856A (en) * 1945-01-29 1948-05-04 John J Bailey Finishing device
US3545142A (en) * 1968-05-24 1970-12-08 William E Sullenberger Abrading implements
US4196548A (en) * 1978-04-10 1980-04-08 Hahn Norman G Sanding apparatus

Also Published As

Publication number Publication date
DE664671C (de) 1938-09-01
FR796005A (fr) 1936-03-27

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