US176250A - Improvement in machines for making twist-drills - Google Patents
Improvement in machines for making twist-drills Download PDFInfo
- Publication number
- US176250A US176250A US176250DA US176250A US 176250 A US176250 A US 176250A US 176250D A US176250D A US 176250DA US 176250 A US176250 A US 176250A
- Authority
- US
- United States
- Prior art keywords
- drills
- machines
- cam
- improvement
- disk
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/32—Milling helical grooves, e.g. in making twist-drills
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/300056—Thread or helix generating
- Y10T409/300168—Thread or helix generating with means to regulate operation by use of templet, card, or other replaceable information supply
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/300056—Thread or helix generating
- Y10T409/300672—Thread or helix generating with means to rotate work and means to interrelatedly infeed the work relative to the cutter
Definitions
- Patented Apri118,1876 is apri118,1876.
- N-PEIERS N-PEIERS, PNOTO-LITHOGRAPHER, WASHINGTON, D C.
- the object of my invention is to construct a machine to make twist-drills with increasing pitch or inclination of the grooves; and it consists of a graduated cam combined with the mandrel which advances the blank along and revolves it to the cutters, which causes the advance of the mandrel to increase in speed as the work progresses, and "thus increase the pitch.
- Figure 1 is a side elevation of my improved machine.
- Fig. 2 is a sectional elevation, and
- Fig. 3 is a top view.
- A is the mandrel, in which the blank B is advanced along and rotated between the cutters, (not shown,) by which the grooves G are formed, the mandrel being advanced by the feed-screw D, and revolved by the train of gears E, all of which are the same as in other machines, except that I have arranged the feed-screw to rest on the disk F, which has radial roller-studs G supportingit on the cam disk H, which is geared, by wheel I, pinion J, wheels K, and shaft L, with the mandrel, so that the cam-disk is slowly turned to lower the feed-screw as the work progresses.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Description
E. S. TABER.
MACHINES FOR MAKING TWIST DRILLS.
Patented Apri118,1876.
WITNESSES %%MW ATTBBNEYS. \Q
N-PEIERS, PNOTO-LITHOGRAPHER, WASHINGTON, D C.
UNITED STATES PATENT OFFICE.
EDWARD S. TABER, OF NEW BEDFORD, MASSACHUSETTS.
IMPROVEMENT IN MACHINES FOR MAKING TWIST-DRILLS.
Specification formin part of Letters Patent No. 176,250, dated April 18, 1876; application filed February 28, 1876.
To all whom it may concern:
Be it known that I, EDWARD S. TABER, of New Bedt'ord, in the county of Bristol and State of Massachusetts, have invented a new and Improved Machine for Making Twist- Drills, of which the following is a specification:
The object of my invention is to construct a machine to make twist-drills with increasing pitch or inclination of the grooves; and it consists of a graduated cam combined with the mandrel which advances the blank along and revolves it to the cutters, which causes the advance of the mandrel to increase in speed as the work progresses, and "thus increase the pitch.
Figure 1 is a side elevation of my improved machine. Fig. 2 is a sectional elevation, and Fig. 3 is a top view.
Similar letters of reference indicate corresponding parts.
A is the mandrel, in which the blank B is advanced along and rotated between the cutters, (not shown,) by which the grooves G are formed, the mandrel being advanced by the feed-screw D, and revolved by the train of gears E, all of which are the same as in other machines, except that I have arranged the feed-screw to rest on the disk F, which has radial roller-studs G supportingit on the cam disk H, which is geared, by wheel I, pinion J, wheels K, and shaft L, with the mandrel, so that the cam-disk is slowly turned to lower the feed-screw as the work progresses. The
cam disk is so graduated that the descent of the feed-screw decreases, and thereby the advance of the mandrel by the feed-screw increases, which increases the pitch. Thedisk F has a stud, G, working in a slotted stud, M, to hold it against being turned by the cam. but arranged to allow it to rise and fall firmly.
The mandrel is set back after each operation by the hand-crank N, which raises the disk F up the inclines of the cam, and the disk has studs N, which rise up out of the slots 0 of the cam, and swing beyond them over the upper face of the same, to prevent the disk from falling in case the inclines of the cam turn back so far under the roller-studs as to allow it to do so.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, with mandrel A, feedscrew D, and disk F, having roller-studs, of the cam-disk H, graduated as shown and described, to cause the feed-screw to descend decreasingly and the mandrel to ascend increasingly, thus gradually increasing the pitch.
2. The feed-screw-supporting disk F, having studs N, in combination with the cam, having slots 0, substantially as specified.
EDWARD S. TABER.
Witnesses:
GIDEON ALLEN, J r., GEORGE R. STETsoN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US176250A true US176250A (en) | 1876-04-18 |
Family
ID=2245657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US176250D Expired - Lifetime US176250A (en) | Improvement in machines for making twist-drills |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US176250A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3130522A (en) * | 1961-03-23 | 1964-04-28 | Beaver Prec Products Inc | Lead shift mechanism |
-
0
- US US176250D patent/US176250A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3130522A (en) * | 1961-03-23 | 1964-04-28 | Beaver Prec Products Inc | Lead shift mechanism |
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