US2247721A - Adjustable center for tailstocks - Google Patents
Adjustable center for tailstocks Download PDFInfo
- Publication number
- US2247721A US2247721A US349939A US34993940A US2247721A US 2247721 A US2247721 A US 2247721A US 349939 A US349939 A US 349939A US 34993940 A US34993940 A US 34993940A US 2247721 A US2247721 A US 2247721A
- Authority
- US
- United States
- Prior art keywords
- center
- sleeve
- screws
- tailstocks
- point
- 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
- 238000010276 construction Methods 0.000 description 2
- 241001446467 Mama Species 0.000 description 1
- 241001417935 Platycephalidae Species 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
- B23B23/02—Dead centres
- B23B23/025—Dead centres the centres being adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/088—Indication scales
-
- 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
- Y10T82/00—Turning
- Y10T82/25—Lathe
- Y10T82/2568—Center
- Y10T82/2571—Alignment adjuster
Definitions
- This invention relates to an adjustable center for the tail-stocks of lathes, one of the objects being to provide a simple but eflicient means whereby an accurate adjustment of the center can be eflected in anv direction.
- a still further object is to provide a tail-stock wherein adjustment of the center carried thereby can be done quickly and accurately, means being employed for indicating minute adjustment.
- Figure 2 is a longitudinal section therethrough, the center being shown in elevation.
- Figure 3 is an end elevation.
- I designates a sleeve of standard taper adapted to be held within the tail-stock of a lathe.
- This sleeve is provided at its large or open end with an annular flange 2 while its small or closed end carries a holding screw 3 or the like adapted to be locked in place by a nut I and provided at that end within the sleeve with a point 5.
- the center has been indicated at 6 and has a long tapered portion 1 recessed at its small end as shown at I to receive the point 5 while its other or large end has a short taper leading to a point 8.
- That portion of the center surrounded by the flange 2 is provided with regularly spaced recesses Ill each of which provides a flat bearing for the inner end of an adjusting screw ll'.
- Preferably four of these'adjusting screws are provided, these screws being extended through the flanged end of the sleeve and being provided with large flat heads I! on each of which is arranged an annular series of graduations designated by suitable numerals for indicating minute fractional portions of an inch.
- the adjustment of its point can be efiected quickly and accurately and in a manner insuring greater satisfaction than where the point is adjusted by point can be adjusted upwardly and downwardly by the screws as well as forwardly and backwardly gives the center an advantage over those ordinarily employed.
- the micrometer adjustment possible renders the device especially desirable for use in connection with work requiring minute adjustments.
- a center for the tail-stock of a lathe including a tapered sleeve open at one end, separate pairs of opposed adjusting screws mounted in the sleeve adjacent to its open end and radially disposed relative to the axial center of the sleeve, a center within and spaced from the sleeve and having a point projecting from the sleeve, means for supporting one end of the center in the sleeve, there being separate pairs of opposed flat bearing surfaces on the center positioned for engagement by the respective screws.
- a center for the tail-stock of a lathe including a sleeve closed at one end and open at its other end, radially disposed adjusting screws extending into the sleeve at its open end and arranged in pairs, the screws of each pair being alined, a supporting screw extending into the closed end of the sleeve, and a center bearing at one end of said supporting screw and adjacent -to its other end against the inner ends of the adjusting screws.
- said center being provided with flat bearing surfaces disposed in pairs, the surfaces of each pair being oppositely arranged and each surface being positioned for sliding contact 10 its other end, radially disposed adjusting screws 15 extending into the sleeve at'its open end and arranged in pairs, the screws or each pair being alined, a supportingscrew extending into the closed end of the sleeve, and a center hearing at one end on said supporting screw and adjacent to its other end against the inner ends of the adjusting screws, said center being provided with flat bearing surfaces disposed inwpairs, the surfaces of each pair being oppositely arranged and each surface being positioned for sliding contact with one oi the screws and for receiving thrust from said screw, and cooperating meanson the sleeve and each screw for indicating the extent of each adjustment of the screw.
Description
July 1, 1941. T w T 2,247,721
' ADJUSTABLE CENTER FOR TAILSTOCKS Filed Aug. 2, 1940 2 A2: 1
Eumr
477E. W970i IN VEN TOR.
BY /I 1.
- ATTORNEYS.
mama July 1,1941
UNITED STATES PAT ENT OFFICE ADJUSTABLE mi i t n Tms'rocxs Thomas Eugene Wright, Jersey City, N. 1. Application August 2, 1940, Serial No. 349,939 4 Claims. (01. 82-33) This invention relates to an adjustable center for the tail-stocks of lathes, one of the objects being to provide a simple but eflicient means whereby an accurate adjustment of the center can be eflected in anv direction.
A still further object is to provide a tail-stock wherein adjustment of the center carried thereby can be done quickly and accurately, means being employed for indicating minute adjustment.
With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.
In the :companying drawing the preferred form of the invention has been shown.
In said drawing Figure 1 is an elevation of the device.
Figure 2 is a longitudinal section therethrough, the center being shown in elevation.
Figure 3 is an end elevation.
Referring to the figures by characters of reference, I designates a sleeve of standard taper adapted to be held within the tail-stock of a lathe. This sleeve is provided at its large or open end with an annular flange 2 while its small or closed end carries a holding screw 3 or the like adapted to be locked in place by a nut I and provided at that end within the sleeve with a point 5.
The center has been indicated at 6 and has a long tapered portion 1 recessed at its small end as shown at I to receive the point 5 while its other or large end has a short taper leading to a point 8. That portion of the center surrounded by the flange 2 is provided with regularly spaced recesses Ill each of which provides a flat bearing for the inner end of an adjusting screw ll'. Preferably four of these'adjusting screws are provided, these screws being extended through the flanged end of the sleeve and being provided with large flat heads I! on each of which is arranged an annular series of graduations designated by suitable numerals for indicating minute fractional portions of an inch. These graduations, shown at ii, are adapted to be read in connection with one or more afflxed marks It on the flange 2 and which are designated by the character 0." The screws are so proportioned and assembled with the center 6 that when the the usual means. Furthermore the fact that the.
zero graduation ll registers with one of the marks It, the center will be held in position coaxial with the sleeve I. By unscrewing one of the 'adjusting screws H a fraction of an inch mark ll. As the opposed recesses II are flat and parallel with each other, it will be apparent that when the center is adjusted in one direction and held by two of the screws. it will slide between the remaining screws. Obviously by providing the screws as indicated the adjustment of the center can be eflected upwardly or downwardly or horizontally in order to bring the point t to the desired position relative to the head-stock of the lathes.
By providing a center such as described the adjustment of its point can be efiected quickly and accurately and in a manner insuring greater satisfaction than where the point is adjusted by point can be adjusted upwardly and downwardly by the screws as well as forwardly and backwardly gives the center an advantage over those ordinarily employed. The micrometer adjustment possible, renders the device especially desirable for use in connection with work requiring minute adjustments.
What is claimed is:
1. A center for the tail-stock of a lathe, including a tapered sleeve open at one end, separate pairs of opposed adjusting screws mounted in the sleeve adjacent to its open end and radially disposed relative to the axial center of the sleeve, a center within and spaced from the sleeve and having a point projecting from the sleeve, means for supporting one end of the center in the sleeve, there being separate pairs of opposed flat bearing surfaces on the center positioned for engagement by the respective screws.
2. A center for the tail-stock of a lathe, including a sleeve closed at one end and open at its other end, radially disposed adjusting screws extending into the sleeve at its open end and arranged in pairs, the screws of each pair being alined, a supporting screw extending into the closed end of the sleeve, and a center bearing at one end of said supporting screw and adjacent -to its other end against the inner ends of the adjusting screws.
3. A center for the tail-stock of a lathe,'in-.
eluding a sleeve closed at one end and open at its other end, radially disposed adjusting screws extending into the sleeve at its open end and arranged in pairs, the screws of each pair being aimed, a supporting screw extending into the closed end of the sleeve, and a center bearing at one end on said supporting screw and adjacent to its other end against the inner ends. of the adjusting screws, said center being provided with flat bearing surfaces disposed in pairs, the surfaces of each pair being oppositely arranged and each surface being positioned for sliding contact 10 its other end, radially disposed adjusting screws 15 extending into the sleeve at'its open end and arranged in pairs, the screws or each pair being alined, a supportingscrew extending into the closed end of the sleeve, and a center hearing at one end on said supporting screw and adjacent to its other end against the inner ends of the adjusting screws, said center being provided with flat bearing surfaces disposed inwpairs, the surfaces of each pair being oppositely arranged and each surface being positioned for sliding contact with one oi the screws and for receiving thrust from said screw, and cooperating meanson the sleeve and each screw for indicating the extent of each adjustment of the screw.
THOMAS EUGENE WRIGHT.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US349939A US2247721A (en) | 1940-08-02 | 1940-08-02 | Adjustable center for tailstocks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US349939A US2247721A (en) | 1940-08-02 | 1940-08-02 | Adjustable center for tailstocks |
Publications (1)
Publication Number | Publication Date |
---|---|
US2247721A true US2247721A (en) | 1941-07-01 |
Family
ID=23374618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US349939A Expired - Lifetime US2247721A (en) | 1940-08-02 | 1940-08-02 | Adjustable center for tailstocks |
Country Status (1)
Country | Link |
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US (1) | US2247721A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2415465A (en) * | 1944-04-06 | 1947-02-11 | United Shoe Machinery Corp | Center for copying lathes |
US2437957A (en) * | 1944-06-23 | 1948-03-16 | Nelpin Mfg Company | Lathe center |
US2448551A (en) * | 1944-05-12 | 1948-09-07 | Barlow & Soellg Mfg Company | Grinding machine |
US2833026A (en) * | 1953-11-13 | 1958-05-06 | Kostka Charles | All purpose tool element holder |
US2847890A (en) * | 1952-12-20 | 1958-08-19 | Jacobs Wind Elec Co | Adjustable lathe center |
US3177742A (en) * | 1960-06-22 | 1965-04-13 | Laval Turbine | Method for positioning a work piece in a machine tool |
US3212373A (en) * | 1960-06-22 | 1965-10-19 | Laval Turbine | Apparatus for positioning a work piece in a machine |
US3756102A (en) * | 1971-04-22 | 1973-09-04 | M Casey | Adjustable center apparatus |
US3937111A (en) * | 1974-10-24 | 1976-02-10 | Holloway Raymond L | Adjustable live center adapter |
US20190047053A1 (en) * | 2017-08-10 | 2019-02-14 | Barry Kiesler | Adjustable pipe center and method |
-
1940
- 1940-08-02 US US349939A patent/US2247721A/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2415465A (en) * | 1944-04-06 | 1947-02-11 | United Shoe Machinery Corp | Center for copying lathes |
US2448551A (en) * | 1944-05-12 | 1948-09-07 | Barlow & Soellg Mfg Company | Grinding machine |
US2437957A (en) * | 1944-06-23 | 1948-03-16 | Nelpin Mfg Company | Lathe center |
US2847890A (en) * | 1952-12-20 | 1958-08-19 | Jacobs Wind Elec Co | Adjustable lathe center |
US2833026A (en) * | 1953-11-13 | 1958-05-06 | Kostka Charles | All purpose tool element holder |
US3177742A (en) * | 1960-06-22 | 1965-04-13 | Laval Turbine | Method for positioning a work piece in a machine tool |
US3212373A (en) * | 1960-06-22 | 1965-10-19 | Laval Turbine | Apparatus for positioning a work piece in a machine |
US3756102A (en) * | 1971-04-22 | 1973-09-04 | M Casey | Adjustable center apparatus |
US3937111A (en) * | 1974-10-24 | 1976-02-10 | Holloway Raymond L | Adjustable live center adapter |
US20190047053A1 (en) * | 2017-08-10 | 2019-02-14 | Barry Kiesler | Adjustable pipe center and method |
US10625346B2 (en) * | 2017-08-10 | 2020-04-21 | Barry Kiesler | Adjustable pipe center and method |
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