GB437515A - Improvements in devices for boring conical sockets in wood - Google Patents

Improvements in devices for boring conical sockets in wood

Info

Publication number
GB437515A
GB437515A GB2016235A GB2016235A GB437515A GB 437515 A GB437515 A GB 437515A GB 2016235 A GB2016235 A GB 2016235A GB 2016235 A GB2016235 A GB 2016235A GB 437515 A GB437515 A GB 437515A
Authority
GB
United Kingdom
Prior art keywords
blades
shanks
nut
head
sleeve
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
Application number
GB2016235A
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 to DEJ48970D priority Critical patent/DE618539C/en
Priority to DESCH104107D priority patent/DE618599C/en
Priority to CH188089D priority patent/CH188089A/en
Application filed by Individual filed Critical Individual
Priority to GB2016235A priority patent/GB437515A/en
Publication of GB437515A publication Critical patent/GB437515A/en
Priority to US48465A priority patent/US2074605A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63D—BOWLING GAMES, e.g. SKITTLES, BOCCE OR BOWLS; INSTALLATIONS THEREFOR; BAGATELLE OR SIMILAR GAMES; BILLIARDS
    • A63D15/00—Billiards, e.g. carom billiards or pocket billiards; Billiard tables
    • A63D15/20—Scoring or registering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/0018—Drills for enlarging a hole
    • B23B51/0045—Drills for enlarging a hole by expanding or tilting the toolhead

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

437,515. Drills and cutters. EGGEMANN, J., Holm, Harburg-on-Elbe, Germany. July 15, 1935, No. 20162. [Class 83 (iii)] A drill for boring conical inwardly widening sockets in wood comprises a head l attached to a spindle h and provided with an axial slot p in which the shanks m of cutting blades u are pivoted by means of a pin r. A sleeve v is slidable on the head l and carries a pin v<1> sliding through a slot w in the head and carrying a wedge u located between the shanks m. The sleeve v is normally pressed to the right in the Figure in which position the blades n may contract from the location shown, by means of a spring y acting on a flange x sliding in a guide sleeve i and abutting on lock nuts z on a coupling o which secures the head l to the spindle h. The guide sleeve i is secured in supports i<1> and is screwed at the end to engage a nut k rotated by hand to operate the sleeve v. Complete removal of the nut k is prevented by a bracket z<3> on the support i<1>. In operation, the nut k is adjusted so that the blades n are in the contracted condition and a hole is drilled thereby to the required depth. The blades are then expanded by the nut k to produce the required undercut in the hole, and are again contracted for withdrawal. The blades n which are secured to the shanks m by countersunk screws, are inclined relatively to the shanks and are provided with teeth s for producing grooves in the sides of the hole.
GB2016235A 1934-02-13 1935-07-15 Improvements in devices for boring conical sockets in wood Expired GB437515A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DEJ48970D DE618539C (en) 1934-02-13 1934-02-13 Ball game machine with automatic counting mechanism showing the winning number and adding up
DESCH104107D DE618599C (en) 1934-05-01 1934-05-01 Device for drilling conically enlarged nesting holes in cut wood
CH188089D CH188089A (en) 1935-07-15 1935-06-22 Device for drilling conically enlarged nesting holes in wood blanks.
GB2016235A GB437515A (en) 1935-07-15 1935-07-15 Improvements in devices for boring conical sockets in wood
US48465A US2074605A (en) 1935-07-15 1935-11-06 Boring tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2016235A GB437515A (en) 1935-07-15 1935-07-15 Improvements in devices for boring conical sockets in wood

Publications (1)

Publication Number Publication Date
GB437515A true GB437515A (en) 1935-10-30

Family

ID=10141405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2016235A Expired GB437515A (en) 1934-02-13 1935-07-15 Improvements in devices for boring conical sockets in wood

Country Status (2)

Country Link
CH (1) CH188089A (en)
GB (1) GB437515A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106061697A (en) * 2014-03-04 2016-10-26 木构造系统株式会社 Device for forming expanded hole section

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106061697A (en) * 2014-03-04 2016-10-26 木构造系统株式会社 Device for forming expanded hole section

Also Published As

Publication number Publication date
CH188089A (en) 1936-12-15

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