US1686377A - V rest for knife edges - Google Patents

V rest for knife edges Download PDF

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Publication number
US1686377A
US1686377A US147758A US14775826A US1686377A US 1686377 A US1686377 A US 1686377A US 147758 A US147758 A US 147758A US 14775826 A US14775826 A US 14775826A US 1686377 A US1686377 A US 1686377A
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US
United States
Prior art keywords
rest
blocks
knife edges
recess
knife
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
Application number
US147758A
Inventor
Einar A Hanson
Clarence E Whitney
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US650292A external-priority patent/US1608878A/en
Application filed by Individual filed Critical Individual
Priority to US147758A priority Critical patent/US1686377A/en
Application granted granted Critical
Publication of US1686377A publication Critical patent/US1686377A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G21/00—Details of weighing apparatus
    • G01G21/02—Arrangements of bearings
    • G01G21/04—Arrangements of bearings of knife-edge bearings

Definitions

  • the present invention has particular reference to V rests for knife edges and has as its object to provide a rest of this sort of novel and advantageous construction.
  • an aim of the invention is to provide a V rest, the V of which is characterized by its accuracy and sharpness.
  • the figure shows in elevation, the improved V rest and the knife edge associated therewith.
  • the V rest includes a pair of blocks 11 and 12 which may be positioned within a recess 13 in a part or support 14.
  • the blocks may be held in place in the recess in any suitable manner, as by means of screws 15.
  • the two blocks have abutting plane surfaces 16, and the corresponding corners of the blocks, where these blocks meet, are bevelled as at 17 so as to form a cylindrical V.
  • the advantage of this arrangement is that, from a practical standpoint, it is very difficult, to say the least, to cut in a single block a V, the corner or angle of which is sharp. With the present arrangement, however, the V rest may be made Serial No. 147,758.
  • a knife rest including a. pair of alined blocks positioned end to end and having the adjacent corners at the meeting faces similarly bevelled to form a V.
  • a V rest for knife edges including a support having a recess, a pair of blocks positioned end to end and fitting-closely within the recess, said blocks having the adjacent corners at the meeting faces similarly bevelled to form a V, and means for securing said blocks in said recess.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Description

Oct. 2, 1928.
- 1,686,377 B. M. W. HANSON v REST FOR KNIFE EDGES Original Filed July 9, 1925 hr Lw L Y I gvwz'ntoz ww k mwb awn/n6 Patented Oct. 2, 1928.
UNITED STATES PATENT OFFICE.
BENGT M. 'W. HANSON, DECEASED, LATE OF HARTFORD, CONNECTICUT, BY EINAR A. HANSON, OF WEST HARTFORD, CONNECTICUT, AND CLARENCE.E. WHITNEY, F HARTFORD, CONNECTICUT, EXECUTORS, NOW BY RESIGNATION EINAR A. HAN- SON, SOLE EXECUTOR.
V REST'FOR KNIFE EDG'ES.
Original application filed July 9, 1923, Serial No. 650,292. Divided and this application filed November 11, 1926.
This is a division of the Bengt M. W. Hanson application Serial No. 650,292, filed July 9, 1923, and entitled Testing-or measuring apparatus.
The present invention has particular reference to V rests for knife edges and has as its object to provide a rest of this sort of novel and advantageous construction.
More particularly, an aim of the invention is to provide a V rest, the V of which is characterized by its accuracy and sharpness. In the accompanying drawing, the figure shows in elevation, the improved V rest and the knife edge associated therewith.
Referring to the drawings in detail, the V rest includes a pair of blocks 11 and 12 which may be positioned within a recess 13 in a part or support 14. The blocks may be held in place in the recess in any suitable manner, as by means of screws 15. The two blocks have abutting plane surfaces 16, and the corresponding corners of the blocks, where these blocks meet, are bevelled as at 17 so as to form a cylindrical V. The advantage of this arrangement is that, from a practical standpoint, it is very difficult, to say the least, to cut in a single block a V, the corner or angle of which is sharp. With the present arrangement, however, the V rest may be made Serial No. 147,758.
with extreme accuracy and at a greatly redu'ced cost. After the sides of the blocks 11 and 12 have been properly faced, they may be positioned side by side in accurate alinement and then the corresponding corners of the blocks may be bevelled off with the as surance that these two beveled facesare at the same angle. The blocks are then posi-- tioned in the recess 13, as shown in the drawing, and, obviously, Where the bevelled faces meet is a sharp, accurate corner which re- 40 ceives a knife edge, designated by the numeral 20. g
What is claimed is:
' 1. A knife rest including a. pair of alined blocks positioned end to end and having the adjacent corners at the meeting faces similarly bevelled to form a V.
2. A V rest for knife edges includinga support having a recess, a pair of blocks positioned end to end and fitting-closely within the recess, said blocks having the adjacent corners at the meeting faces similarly bevelled to form a V, and means for securing said blocks in said recess.
' EINAR A. HANSON,
CLARENCE E. WHITNEY, Emecutors of Bengt M. W. H enson, deceased
US147758A 1923-07-09 1926-11-11 V rest for knife edges Expired - Lifetime US1686377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US147758A US1686377A (en) 1923-07-09 1926-11-11 V rest for knife edges

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US650292A US1608878A (en) 1923-07-09 1923-07-09 Testing or measuring apparatus
US147758A US1686377A (en) 1923-07-09 1926-11-11 V rest for knife edges

Publications (1)

Publication Number Publication Date
US1686377A true US1686377A (en) 1928-10-02

Family

ID=26845208

Family Applications (1)

Application Number Title Priority Date Filing Date
US147758A Expired - Lifetime US1686377A (en) 1923-07-09 1926-11-11 V rest for knife edges

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US (1) US1686377A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729438A (en) * 1954-03-01 1956-01-03 Voland And Sons Inc Mountings for weight supporting members of analytical balance
US2906243A (en) * 1957-12-23 1959-09-29 Ishida Yoshimitsu Jewelled point pen
US3354701A (en) * 1965-02-18 1967-11-28 Felix L Yerzley Mechanical oscillographs
US20040018911A1 (en) * 2002-05-23 2004-01-29 Nsk Ltd. Toroidal-type continuously variable transmission

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729438A (en) * 1954-03-01 1956-01-03 Voland And Sons Inc Mountings for weight supporting members of analytical balance
US2906243A (en) * 1957-12-23 1959-09-29 Ishida Yoshimitsu Jewelled point pen
US3354701A (en) * 1965-02-18 1967-11-28 Felix L Yerzley Mechanical oscillographs
US20040018911A1 (en) * 2002-05-23 2004-01-29 Nsk Ltd. Toroidal-type continuously variable transmission
US7335130B2 (en) * 2002-05-23 2008-02-26 Nsk Ltd. Toroidal-type continuously variable transmission

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