GB191422620A - Improvements in or relating to Grinding Machinery. - Google Patents

Improvements in or relating to Grinding Machinery.

Info

Publication number
GB191422620A
GB191422620A GB191422620DA GB191422620A GB 191422620 A GB191422620 A GB 191422620A GB 191422620D A GB191422620D A GB 191422620DA GB 191422620 A GB191422620 A GB 191422620A
Authority
GB
United Kingdom
Prior art keywords
grinding
wheels
cam
work
bed
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
Application number
Inventor
Harry Smith
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191422620A publication Critical patent/GB191422620A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/40—Processes or apparatus specially adapted for sharpening curved edges

Landscapes

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

Abstract

22,620. Smith, H. Nov. 17. Wheel apparatus. - A machine for grinding cutlery, penknives, pruning-knives, edge-tools, &c. comprises two annular grinding-wheels 1 mounted side by side on vertical axes and adjustable by means of hand - wheels 5, and a pivoted bed 6 on which is slidably mounted a table 9 carrying two work-holders 8. The bed is pivoted at 7 and is raised to bring the work into contact with the grinding-wheels at the beginning of an outward stroke and away from them at the conclusion of the stroke by means of a stepped cam 11, mounted on a shaft 12 and adapted to engage a roller 13 which is carried by a cross-piece 14 connected at its ends to links 15. On depression of the roller by the cam, the links operate, through levers 16 and standards 17, to raise the table; the cam may be shaped as shown in Fig. 3 and may have separate pieces 28 attached thereto, or may be suitably shaped adjacent to the inner step thereof, when it is desired to grind the work to a greater extent as the end of the outward stroke is reached, for example in the case of penknives or other knives in which the cutting- edge is curved. The table is reciprocated by means of a cam-groove 19 formed in the body of the stepped cam and adapted to be engaged by a roller on a lever 20, which is linked to one arm 21 of a bell-crank lever, the other arm 22 of which is connected to the table by means of a link 24; the cam-groove-may be shaped to give a quick-return motion to the table. For grinding pruning-knives &c., the guides for the table in the bed 6 may be shaped so that the whole of the curved edge of the blade travels along the same path. In grinding cutlery, the work is ground against the inner edge of the annular grinding - wheels, being thereby ground convex; for hollow grinding, the blades are ground on the outer edge of the wheels. When files &c. are to be ground, they are arranged to be presented flat to the wheels at right-angles to the axis thereof. The bed and the parts carried thereby are enclosed within a trough 27 to collect the cooling-fluid. Two pieces of work are operated on at the same time and may be reversed and changed from one holder to the other, to grind the other sides, at the conclusion of the outward stroke.
GB191422620D 1914-11-17 1914-11-17 Improvements in or relating to Grinding Machinery. Expired GB191422620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191422620T 1914-11-17

Publications (1)

Publication Number Publication Date
GB191422620A true GB191422620A (en) 1915-10-07

Family

ID=32587057

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191422620D Expired GB191422620A (en) 1914-11-17 1914-11-17 Improvements in or relating to Grinding Machinery.

Country Status (1)

Country Link
GB (1) GB191422620A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2463029A (en) * 2008-08-28 2010-03-03 Chun Ming Cheung Knife sharpener and protractor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2463029A (en) * 2008-08-28 2010-03-03 Chun Ming Cheung Knife sharpener and protractor
GB2463029B (en) * 2008-08-28 2011-06-15 Chun Ming Cheung Knife sharpener

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