US315530A - Island - Google Patents
Island Download PDFInfo
- Publication number
- US315530A US315530A US315530DA US315530A US 315530 A US315530 A US 315530A US 315530D A US315530D A US 315530DA US 315530 A US315530 A US 315530A
- Authority
- US
- United States
- Prior art keywords
- blank
- drills
- twisted
- rolls
- drill
- 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
- 210000001699 lower leg Anatomy 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 210000000088 Lip Anatomy 0.000 description 2
- 240000000233 Melia azedarach Species 0.000 description 2
- 241000220010 Rhode Species 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000002708 enhancing Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000005360 mashing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
Definitions
- any desircdconcavity can be int nartco.
- the faces of the blank by the rolls, filler oh the blank is twisted into spiral form and cut into two equal parts. Thccuds are then properly ground and two drills are formed without. loss of material or sacrifice of strength in any part of the drill, and the lips are even and o uniform thickness throughout, preserving ihis uniformity while being twisted, and consequently do not require so much grinding to bring them to an oven and true finish.
- Figure l is atop plan of the blank after it has passed through the that rolls. on line 0 0.
- Fig. 4 is a transvcrsc section of same oulinc a :1; of Fig. 1.
- Fig. 5 shows theblank twisted into spiral form
- Fig. 6 shows a completed drill formed by dividing Fig. 5 centrally on A represents the body of the blank provided with shanks b b.
- the body A is flattened, grooved, and twisted into the spiral form, as shown, the shanks b b forming in the completed stage the shanks of the drills.
- the blank is twist-ed into th form shown in Fig. 5, it is divided on the line 3 y into two equal parts, thccnds of each part. are ground and pointed, and two completed drills are produced at one operation.
- twist-drills consisting in rolling a blank into the forms shown in Figs. 1 and 3, with a shank at; each end, and twisting such blank into the form shown in Fig. 5, dividing the same into two equal sections on the transverse line 7 1 to form two drills at each operation from a single blank, as set fort-h.
- Fig. 2 is a transverse sect-ion of same Fig. 3 shows the blank grooved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Package Frames And Binding Bands (AREA)
- Metal Rolling (AREA)
Description
. UNITED STATES SAMUEL MOORE. OF PROVIDENCE, RHODE ISLAND.
MANUFACTURE OF DRILLS.
SPBCIPICATICN forming part. of Letters Patent No. 315.530. dated April 14, 1885.
Application .ilril January 23, 1 3. 5.
'5 .lst-Drills, of which the following is a succification.
, Lian with its grooves had thus been brought down to the requisite thinness, the drill was.
twisted into spiral form, and the end cut oil and ground. This process has in practical use been found to be unsatisfactory and expensive. Ihc blank bcing cylindrical, it has been found almost. impracticable to start in a" I roll it down to an even thickness on each dge by the use of convczefaccd rolls, and in passing out from between the rolls't-hc blank was frequently destroyed, and always more or less injured by the rolls nipping or mashing down the end of the blank, necessitating the cutting off of quite a largo piece of [hi end of the blank after rolling. thereby wast iug the stock and enhancing the cost of manufacture. Inventive thought and skill have therefore been directed to the prevention of this waste and to the devising of means of rolling and grooving the blank so that it. will be of an even and uniform thickness. The
process of milling the drill from a. blank has hsufiicient length to form two drills and the line y y.
(X0 model.
Of course any desircdconcavity can be int nartco. the faces of the blank by the rolls, filler oh the blank is twisted into spiral form and cut into two equal parts. Thccuds are then properly ground and two drills are formed without. loss of material or sacrifice of strength in any part of the drill, and the lips are even and o uniform thickness throughout, preserving ihis uniformity while being twisted, and consequently do not require so much grinding to bring them to an oven and true finish. By using a blank long cnough to run-kc two drills as described I am enablcdto bringeach end of the blank to a finish before rolling, thereby aii'ording two true centers, by which the blank can be centered and rolle and twisted uniformly.
In the drawings, Figure l is atop plan of the blank after it has passed through the that rolls. on line 0 0. Fig. 4 is a transvcrsc section of same oulinc a :1; of Fig. 1. Fig. 5 shows theblank twisted into spiral form, and Fig. 6 shows a completed drill formed by dividing Fig. 5 centrally on A represents the body of the blank provided with shanks b b. The body A is flattened, grooved, and twisted into the spiral form, as shown, the shanks b b forming in the completed stage the shanks of the drills. After the blank is twist-ed into th form shown in Fig. 5, it is divided on the line 3 y into two equal parts, thccnds of each part. are ground and pointed, and two completed drills are produced at one operation.
I claim as new herein and .my invention and desire to secure by Letters Patent- The method described of manufacturing twist-drills, the same consisting in rolling a blank into the forms shown in Figs. 1 and 3, with a shank at; each end, and twisting such blank into the form shown in Fig. 5, dividing the same into two equal sections on the transverse line 7 1 to form two drills at each operation from a single blank, as set fort-h.
In testimony whereof I have hereunto set 21st, day of January, 1885.
SAMUEL MOORE Wit-messes: HENRY llIARSH, Jr., SULLIVAN FEXNER.
Fig. 2 is a transverse sect-ion of same Fig. 3 shows the blank grooved.
roc my hand, in presence of two witnesses, this
Publications (1)
Publication Number | Publication Date |
---|---|
US315530A true US315530A (en) | 1885-04-14 |
Family
ID=2384679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US315530D Expired - Lifetime US315530A (en) | Island |
Country Status (1)
Country | Link |
---|---|
US (1) | US315530A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2457132A (en) * | 1941-05-31 | 1948-12-28 | Republic Drill & Tool Company | Method of manufacturing twist drills |
-
0
- US US315530D patent/US315530A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2457132A (en) * | 1941-05-31 | 1948-12-28 | Republic Drill & Tool Company | Method of manufacturing twist drills |
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