US55661A - Improvement in cutters for dovetailing-machines - Google Patents
Improvement in cutters for dovetailing-machines Download PDFInfo
- Publication number
- US55661A US55661A US55661DA US55661A US 55661 A US55661 A US 55661A US 55661D A US55661D A US 55661DA US 55661 A US55661 A US 55661A
- Authority
- US
- United States
- Prior art keywords
- cutter
- cutters
- dovetailing
- machines
- edges
- 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
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 210000000088 Lip Anatomy 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 241000906091 Lethrinus miniatus Species 0.000 description 2
- FSVJFNAIGNNGKK-UHFFFAOYSA-N Praziquantel Chemical compound C1C(C2=CC=CC=C2CC2)N2C(=O)CN1C(=O)C1CCCCC1 FSVJFNAIGNNGKK-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/007—Combined with manufacturing a workpiece
Definitions
- This invention relates to improvements in the details of construction of cutters or cutterheads designed to be employed in dovetailingmachines embodying the invention patented to S. E. Hartwell, March 22, 1862.
- My invention further consists in combining, with a cutter made with such concentric coned surfaces for the formation of the cutting-edges, cutting-lips at the upper outer corners of the cutter-steel, when made to extend beyond any part of the edges of the cutters, the object of such lips being to support and protect the extreme points or angles of the cutting-edges and to relieve-such points, corners, or angles from a portion of the work which would otherwise have to be done by them, which would cause them to become sooner dull than any other part of the cutting-edges, and would prevent the formation of sharpaugled and well-defined smooth tenons and mortises; and myinvention further consists in a cutter-head made of a frusto-conical stock, slotted to receive the cutter-steel, with sector-like portions of the stock removed to form the monthsfor the cutter-steel, and provided with a holdin g-screw passing through one part of the stock and cutter-steel into the other part of the stock, the
- the frusto-conical part of the cutter-stock is marked a, an extension therefrom being provided with screw-threads, by which it is secured to one of the mandrels of the dovetailing-machine before named.
- Fig. 1 In the plan, Fig. 1, will be seen how the slot is made through the part c for reception of the' cutter b, and also that sector-like parts are removed to make mouth-pieces for the cutter.
- the screw for holding the cutter is indicated in dotted lines in Fig. 1, its head being marked c.
- Fig. 3 is shown how the cutter is formed with parts thereof-say about one-sixteenth of an inch inwidth-concentric with the axis of rotation, so that when the cutter becomes dull its diameter is not changed by sharpening the edges from the inside, forming new edges in the periphery of the intended conic frusto.
- These conic surfaces made on the cutter drag upon the wood left by the cutter and polish a-nd condense the surfaces of the dovetail tenons and mortises and improve the quality of the work.
- I claim- 1 The construction of the cutters, as herein described, for polishing and condensing the surfaces of dovetail tenons or mortises.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
Description
. UNITED STATES PATENT OFFICE.
IMPROVEMENT IN CUTTERS FOR DOVETAILING-MACHINES.
Specilication forming part of Letters Patent No. 55,661, dated June 19, 1866.
To all whom it may concern:
Be it known that I, JOHN O. HURSELL, of Boston, in'the county of Suffolk, in the State of Massachusetts, have invented certain new and useful Improvements in Cutters for Dovetailing-'Machiues 5 and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this speciication, is a description of my invention sufficient to enable those skilled in the art to practice it.
This invention relates to improvements in the details of construction of cutters or cutterheads designed to be employed in dovetailingmachines embodying the invention patented to S. E. Hartwell, March 22, 1862.
In such machines the cutters heretofore employed have been of such form that after each sharpening they make a smaller groove or cut than before, in consequence of which the dovetail tenons are left too large to fit the grooves or mortises without being recut or pared.
To remedy this difculty is an object of one part of my invention, which consists in making those parts of a conical cutter where the cutting-ed ges are formed, and substantially parallel thereto, of some width concentric with the axis of rotation, so that as the edges become dulled they may be sharpened Without decreasing the size of the cut intended to be made.
My invention further consists in combining, with a cutter made with such concentric coned surfaces for the formation of the cutting-edges, cutting-lips at the upper outer corners of the cutter-steel, when made to extend beyond any part of the edges of the cutters, the object of such lips being to support and protect the extreme points or angles of the cutting-edges and to relieve-such points, corners, or angles from a portion of the work which would otherwise have to be done by them, which would cause them to become sooner dull than any other part of the cutting-edges, and would prevent the formation of sharpaugled and well-defined smooth tenons and mortises; and myinvention further consists in a cutter-head made of a frusto-conical stock, slotted to receive the cutter-steel, with sector-like portions of the stock removed to form the monthsfor the cutter-steel, and provided with a holdin g-screw passing through one part of the stock and cutter-steel into the other part of the stock, the
of the cutter-steel, taken just below the lips' formed on the Lipper outer corners thereof.
The frusto-conical part of the cutter-stock is marked a, an extension therefrom being provided with screw-threads, by which it is secured to one of the mandrels of the dovetailing-machine before named.
In the plan, Fig. 1, will be seen how the slot is made through the part c for reception of the' cutter b, and also that sector-like parts are removed to make mouth-pieces for the cutter.
The screw for holding the cutter is indicated in dotted lines in Fig. 1, its head being marked c.
The lips on the upper outer corners of the cutter b, and in their cutting action, extend beyond the action of the edges of the cutter by which the wood is removed.
In Fig. 3 is shown how the cutter is formed with parts thereof-say about one-sixteenth of an inch inwidth-concentric with the axis of rotation, so that when the cutter becomes dull its diameter is not changed by sharpening the edges from the inside, forming new edges in the periphery of the intended conic frusto. These conic surfaces made on the cutter drag upon the wood left by the cutter and polish a-nd condense the surfaces of the dovetail tenons and mortises and improve the quality of the work.
I claim- 1. The construction of the cutters, as herein described, for polishing and condensing the surfaces of dovetail tenons or mortises.
2. Providing the upper outer corners of a cutter constructed as above claimed with outward cutting lips, as and for the purpose specied.
3. Constructing the conical cutter-head c with a slot to receive a solid cutter, with opposite cutting-edges, the cut-ter bein ginserted in said slotand confined to thehead, as described.
J. O. HURSELL.
Witnesses:
J B. GEosBY, S. B.KIDDEE.
Publications (1)
Publication Number | Publication Date |
---|---|
US55661A true US55661A (en) | 1866-06-19 |
Family
ID=2125202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US55661D Expired - Lifetime US55661A (en) | Improvement in cutters for dovetailing-machines |
Country Status (1)
Country | Link |
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US (1) | US55661A (en) |
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- US US55661D patent/US55661A/en not_active Expired - Lifetime
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