US1466216A - Grinder - Google Patents

Grinder Download PDF

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Publication number
US1466216A
US1466216A US550263A US55026322A US1466216A US 1466216 A US1466216 A US 1466216A US 550263 A US550263 A US 550263A US 55026322 A US55026322 A US 55026322A US 1466216 A US1466216 A US 1466216A
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United States
Prior art keywords
tool
grinder
hollow
grinders
sharpening
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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
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US550263A
Inventor
Vengrin Stanley
John M Johnson
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Individual
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Individual
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Priority to US550263A priority Critical patent/US1466216A/en
Application granted granted Critical
Publication of US1466216A publication Critical patent/US1466216A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/18—Wheels of special form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S451/00—Abrading
    • Y10S451/911—Tool mounting point

Definitions

  • JOHNSON each a citizen ofthe United States, residing at Duluth, in the county of St. Louis and State of Minnesota,
  • This invention relates to grinders for hollow Chisels.
  • the object of the invention is to obviate the necessity of sharpening such chisels by hand which is frequently practiced at the present time and to accomplish a more desirable job of sharpening.
  • Figure l is a sectional view with portions in elevation of one of the grinders having a; hollow chisel applied thereto,
  • Figure 2 is elevation of one of the hollow chisels
  • Figure 3 is an end view of the cutting end of the chisel.
  • the grinder comprises a cylindrically shaped body portion 1 having a conically shaped outer end 2, the body portion 1 being embedded as by babbitt or the like, illustrated at within a tapered holding chuck or head a, the babbitthaving an axial bore therein which is internally screw threaded as at 5, by which it may be mounted upon a rotative spindle or shaft 6 actuated in any desired manner.
  • FIG. 7 represents a hollow mortising tool com- 40 monly used in wood working machinery the exterior of the cutting bit ofthe ,tool'being I square in cross section and having a round axial bore therethrough.
  • the tool In sharpening the cutting end of this tool upon the grinder the tool is held in axial alignment with f the grinder and crowded against same until'the end of the tool is. completely countersunk by the action of the grinder which will form concaved arcuately shaped cutting edges on the four sides of the'tool, as illustratedxat 8.
  • a grinding tool comprising a hollow conical holder, a metal mass within the holder, a grinding element having a frustmconical base extending within the smaller end of the holder and embedded in the metal mass, said metal mass having a screw-threaded bore to receive an actuating shaft or spindle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

Aug. 28, 1923.
. -S. VENGRIN ET AL GRINDER Filed April 7, 1922 Patented Aug. 28, 1923.
T A ti .iff
STANLEY VENGBIN AND JOHN M. i
ii i
JOHNSON, F DULUTH, ll'II NNE SOTA.
GRIND R.
Application filed April 7, 1822.; Serial No. 558,263. i
and JOHN M. JOHNSON, each a citizen ofthe United States, residing at Duluth, in the county of St. Louis and State of Minnesota,
have invented certain new and useful Improvements in Grinders, of which the following is a specification, reference being had therein to the accompanying drawing.
This invention relates to grinders for hollow Chisels.
The object of the invention is to obviate the necessity of sharpening such chisels by hand which is frequently practiced at the present time and to accomplish a more desirable job of sharpening.
Other objects and advantages will appear in the further description of' the invention.
Referring to the accompanying drawing 0 in which like reference characters indicate like parts, I
Figure l is a sectional view with portions in elevation of one of the grinders having a; hollow chisel applied thereto,
Figure 2 is elevation of one of the hollow chisels, and
Figure 3 is an end view of the cutting end of the chisel.
The grinder comprises a cylindrically shaped body portion 1 having a conically shaped outer end 2, the body portion 1 being embedded as by babbitt or the like, illustrated at within a tapered holding chuck or head a, the babbitthaving an axial bore therein which is internally screw threaded as at 5, by which it may be mounted upon a rotative spindle or shaft 6 actuated in any desired manner.
7 represents a hollow mortising tool com- 40 monly used in wood working machinery the exterior of the cutting bit ofthe ,tool'being I square in cross section and having a round axial bore therethrough. In sharpening the cutting end of this tool upon the grinder the tool is held in axial alignment with f the grinder and crowded against same until'the end of the tool is. completely countersunk by the action of the grinder which will form concaved arcuately shaped cutting edges on the four sides of the'tool, as illustratedxat 8.
If it is desired to lessen the depth of the concaved portion and yet perfectly sharpen each corner of the tool, a tipping of the tool out of axial alignment with the grinderwill accomplish the desired result, as is obvious, such positioning of the tool being illustrated in dotted lines at 9 in Figure l, and it is apparent that a more blunt conically shaped grinder would countersink the tool less, or a sharper one than that shown would countersink the tool more, so thatany desired. edge 11 the toolmay be readily accomplished.
Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is
A grinding tool comprising a hollow conical holder, a metal mass within the holder, a grinding element having a frustmconical base extending within the smaller end of the holder and embedded in the metal mass, said metal mass having a screw-threaded bore to receive an actuating shaft or spindle.
In testimony whereof we hereunto a'tliX our signatures in the presence of two witnesses.
STANLEY VENGRIN. 7 JOHN M. JOHNSON. .Vitnesses V G. D. Donnnow A. M. CAMPBELL.
US550263A 1922-04-07 1922-04-07 Grinder Expired - Lifetime US1466216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US550263A US1466216A (en) 1922-04-07 1922-04-07 Grinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US550263A US1466216A (en) 1922-04-07 1922-04-07 Grinder

Publications (1)

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US1466216A true US1466216A (en) 1923-08-28

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Family Applications (1)

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US550263A Expired - Lifetime US1466216A (en) 1922-04-07 1922-04-07 Grinder

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3386140A (en) * 1963-06-19 1968-06-04 Bruckner Ernst Method and machine for the manufacture of pottery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3386140A (en) * 1963-06-19 1968-06-04 Bruckner Ernst Method and machine for the manufacture of pottery

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