US163683A - Improvement in clamps for grinding watch-crystals - Google Patents

Improvement in clamps for grinding watch-crystals Download PDF

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US163683A
US163683A US163683DA US163683A US 163683 A US163683 A US 163683A US 163683D A US163683D A US 163683DA US 163683 A US163683 A US 163683A
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watch
clamps
crystals
grinding
improvement
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    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies

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  • My invention consists of a pair of rubberfaced clamping-disks, arranged in apair of jointed clamping-jaws, having a clampingscrew for fastcnin g them to receive and hold between them a watch-crystal, and revolve with it, when the edge of a crystal is presented to the face of a grindstone, so that the crystal will be ground on the edge suitably for fitting in the rim of a watch-case.
  • Figure 1 is a perspective view of my improved crystal-grinder, with a crystal between the clamps and presented against the face of a grindstone, and Fig. 2 is a side elevation of the grinder.
  • a and B represent the clamping-disks, with elastic faces, and arranged on independent axles O in the arms D E of the clamp, so as to receive the crystal F between them, as shown.
  • G is the clamp-screw, and H the joint of the arms of the clamp.
  • the crystal is secured between the clamping-disks, and the edge is then presented to the face of the grindstone L, at such an angle asto give the proper bevel to the edge J of the crystal, and to turn it and cause it to be ground alike all around the edge.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Description

A. G. NORTON.
Clamp for Grinding Watch-Crystals. No.163,683. Patented May 25,1875.
THEGRAPHIG CD.PHOTO-LITH.39B=4I PARK PLAGEJLY.
UNITED STATES PATENT OFFICE.
ARTHUR O. NORTON, OF MONONA, IOWA.
IMPROVEMENT IN CLAMPS FOR GRINDING WATCH-CRYSTALS.
Specfication forming part of Letters Patent No. 163,683., dated May 25, 1875; application filed March 29, 1875.
To all whom it may concern:
Be it known that I, ARTHUR O. NORTON, of Monona, in the county of Clayton and State of Iowa, have invented a new and Improved Orystal-Grinder, of which the follow ing is a specification:
My invention consists of a pair of rubberfaced clamping-disks, arranged in apair of jointed clamping-jaws, having a clampingscrew for fastcnin g them to receive and hold between them a watch-crystal, and revolve with it, when the edge of a crystal is presented to the face of a grindstone, so that the crystal will be ground on the edge suitably for fitting in the rim of a watch-case.
Figure 1 is a perspective view of my improved crystal-grinder, with a crystal between the clamps and presented against the face of a grindstone, and Fig. 2 is a side elevation of the grinder.
Similar letters of reference indicate corresponding parts.
A and B represent the clamping-disks, with elastic faces, and arranged on independent axles O in the arms D E of the clamp, so as to receive the crystal F between them, as shown. G is the clamp-screw, and H the joint of the arms of the clamp. The crystal is secured between the clamping-disks, and the edge is then presented to the face of the grindstone L, at such an angle asto give the proper bevel to the edge J of the crystal, and to turn it and cause it to be ground alike all around the edge.
Having thus described my invention, I claim as new and desire to secure by Letters Patent The revolving elastic-faced disks A and B on independent axles O, in combination with jointed clamping-arms D E and a clampscrew, G, substantially as specified.
ARTHUR O. NORTON. Witnesses:
PAUL EGBERT, IRA P. WINTER.
US163683D Improvement in clamps for grinding watch-crystals Expired - Lifetime US163683A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238552A (en) * 1963-11-13 1966-03-08 Edward E Vaughn Rotary coin cleaner
US6206772B1 (en) * 1999-08-02 2001-03-27 Glen A. Davis Disc grinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238552A (en) * 1963-11-13 1966-03-08 Edward E Vaughn Rotary coin cleaner
US6206772B1 (en) * 1999-08-02 2001-03-27 Glen A. Davis Disc grinder

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