US28639A - John f - Google Patents
John f Download PDFInfo
- Publication number
- US28639A US28639A US28639DA US28639A US 28639 A US28639 A US 28639A US 28639D A US28639D A US 28639DA US 28639 A US28639 A US 28639A
- Authority
- US
- United States
- Prior art keywords
- chisels
- wheel
- handle
- dressing
- john
- 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
- 239000004575 stone Substances 0.000 description 12
- 210000000088 Lip Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229920000591 gum Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N p-acetaminophenol Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000000284 resting Effects 0.000 description 2
Images
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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/12—Dressing tools; Holders therefor
- B24B53/14—Dressing tools equipped with rotary rollers or cutters; Holders therefor
Definitions
- My invention consists of a wheel composed of a series of radiating sharp edged chisels situated between two yielding washers the whole being arranged, and hung to a handle substantially in the manner described hereafter so as to form an instrument which, on application to the surface of a revolving grindstone, will impart a number of indentations to the same, without injuring the points of the chisels.
- Figure l is a side view of my improved instrument for dressing grindstones.
- Fig. 2 a sectional view
- Fig. 3 an edge view partially in section.
- (A) represents a portion of an ordinary grindstone, and (B) a stationary bar on which rests the edge of my improved dressing apparatus.
- the latter consists of a handle or stem (C) having at the lower end an opening or slot (c) within which, and on a pin (D), revolves the dressing wheel as seen in Fig. 8.
- This wheel consists of the two hubs (e) and (f), (the former screwing into the latter,) a central washer (7L) with a series of radiating chisels (i), sharpened at the end, and the two washers (j j) of gum, cloth, or other suitable yielding material.
- the chisels are simply let into recesses in the central washer (h) so as to be readily removed therefrom, the whole with the washers being securely confined between the hubs (e) and (f) and the diameter of the yielding washers being such that their edges shall project beyond the points of the chisels to a slight extent.
- the handle or stem is held firmly in a vertical, or nearly vertical position, the lower end resting on the stationary bar (B) and the lip (m) attached to the handle, serving to maintain the latter in its proper position on the bar.
- the upper end of the handle is then moved gradually forward so as to bring the peripheries of the yielding washers (j in contact with the grindstone, care being taken to keep the points of the chisels free from Contact with the stone in the first instance.
- the handle and its wheel are held in this position until the revolving stone communicates a rapid rotary motion to the dressing wheel, when the latter is moved by the handle still farther toward the stone until the edges of the chisels bear against and indent the surface.
- the chisels have imparted such a number of indentations that the stone is fully dressed and ready for use in sharpening knives and other objects.
- the object of the yielding washers is to preserve the ends of the chisels, for should the points of the latter be brought in imy mediate contact with the edge of the revolving stone without any previous rotary motion being imparted to the wheel, the stone would, during its first efforts to turn the wheel, have such a grinding effect on the ends of the chisels that their points would be worn and become of little or no use in making the desired indentations.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Description
UNiTE sara JOHN F. SGHUYLER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO WM. E. LOCKWOOD,
OF SAME PLACE.
APPARATUS FOR DRESSING GRINDSTONES.
Specification of Letters Patent No. 28,639, dated June 5, 1860'.
To all whom it may concern:
Be it known that I, JOHN F. SOHUYLER, of the city and county of Philadelphia, State of Pennsylvania, have invented a new and Improved Apparatus for Dressing Grindstones; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon.
My invention consists of a wheel composed of a series of radiating sharp edged chisels situated between two yielding washers the whole being arranged, and hung to a handle substantially in the manner described hereafter so as to form an instrument which, on application to the surface of a revolving grindstone, will impart a number of indentations to the same, without injuring the points of the chisels.
In order to enable others to make and use my invention, I will now proceed to describe its construction and operation.
On reference to the accompanying drawing which forms a part of this specification, Figure l, is a side view of my improved instrument for dressing grindstones. Fig. 2, a sectional view, and Fig. 3, an edge view partially in section.
Similar letters refer to similar parts throughout the several views.
(A) represents a portion of an ordinary grindstone, and (B) a stationary bar on which rests the edge of my improved dressing apparatus. The latter consists of a handle or stem (C) having at the lower end an opening or slot (c) within which, and on a pin (D), revolves the dressing wheel as seen in Fig. 8. This wheel consists of the two hubs (e) and (f), (the former screwing into the latter,) a central washer (7L) with a series of radiating chisels (i), sharpened at the end, and the two washers (j j) of gum, cloth, or other suitable yielding material. The chisels are simply let into recesses in the central washer (h) so as to be readily removed therefrom, the whole with the washers being securely confined between the hubs (e) and (f) and the diameter of the yielding washers being such that their edges shall project beyond the points of the chisels to a slight extent.
In applying my improved dressing apparatus, the handle or stem is held firmly in a vertical, or nearly vertical position, the lower end resting on the stationary bar (B) and the lip (m) attached to the handle, serving to maintain the latter in its proper position on the bar. The upper end of the handle is then moved gradually forward so as to bring the peripheries of the yielding washers (j in contact with the grindstone, care being taken to keep the points of the chisels free from Contact with the stone in the first instance. The handle and its wheel are held in this position until the revolving stone communicates a rapid rotary motion to the dressing wheel, when the latter is moved by the handle still farther toward the stone until the edges of the chisels bear against and indent the surface. ,After being thus held for some time the chisels have imparted such a number of indentations that the stone is fully dressed and ready for use in sharpening knives and other objects.
The object of the yielding washers is to preserve the ends of the chisels, for should the points of the latter be brought in imy mediate contact with the edge of the revolving stone without any previous rotary motion being imparted to the wheel, the stone would, during its first efforts to turn the wheel, have such a grinding effect on the ends of the chisels that their points would be worn and become of little or no use in making the desired indentations.
I claim as my invention and desire to secure by Letters Patent- The within described dressing wheel composed of a series of radiating sharp pointed chisels situated between two yielding washers, the whole being arranged and hung to the stem (C), or its equivalent, substantially in the manner and for the purpose herein set forth.
In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.
JOHN F. SGHUYLER.
l/Vitnesses:
HENRY I-IowsoN, CHARLES D. FREEMAN.
Publications (1)
Publication Number | Publication Date |
---|---|
US28639A true US28639A (en) | 1860-06-05 |
Family
ID=2098299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US28639D Expired - Lifetime US28639A (en) | John f |
Country Status (1)
Country | Link |
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US (1) | US28639A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030087645A1 (en) * | 2001-11-08 | 2003-05-08 | Kim Byoung-Jo J. | Frequency assignment for multi-cell IEEE 802.11 wireless networks |
-
0
- US US28639D patent/US28639A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030087645A1 (en) * | 2001-11-08 | 2003-05-08 | Kim Byoung-Jo J. | Frequency assignment for multi-cell IEEE 802.11 wireless networks |
US20060025150A1 (en) * | 2001-11-08 | 2006-02-02 | Kim Byoung-Jo J | Frequency assignment for multi-cell IEEE 802.11 wireless networks |
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