US163683A - Improvement in clamps for grinding watch-crystals - Google Patents
Improvement in clamps for grinding watch-crystals Download PDFInfo
- Publication number
- 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
- Authority
- US
- United States
- Prior art keywords
- watch
- clamps
- crystals
- grinding
- improvement
- 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
Links
- 230000000875 corresponding Effects 0.000 description 2
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
Definitions
- 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.
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.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US163683A true US163683A (en) | 1875-05-25 |
Family
ID=2233092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US163683D Expired - Lifetime US163683A (en) | Improvement in clamps for grinding watch-crystals |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US163683A (en) |
Cited By (2)
| 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 |
-
0
- US US163683D patent/US163683A/en not_active Expired - Lifetime
Cited By (2)
| 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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