Gear cutting – milling – or planing – Milling – Process
Patent
1991-04-17
1992-12-22
Briggs, William
Gear cutting, milling, or planing
Milling
Process
269 21, 408 1R, 409225, B23C 300, B25B 1100
Patent
active
051730162
ABSTRACT:
A vacuum dish (10) is rigidly bolted (60) to the support table (12) of a milling machine (14). A bowling ball (74) is set down onto the upwardly directed hard rim (72) of the vacuum dish (10). An elastomeric seal (86) is moved upwardly along the sidewall (66) of the vacuum dish (10), onto an upwardly converging conical surface (70) which borders the rim (72). This puts the elastomeric seal (86) into contact with both the conical surface (70) and an adjacent surface portion of the bowling ball (74). Precision lead screw mechanisms (42, 48, 44, 50) are operated to shift the support table (12) and the vacuum dish supported bowling ball (74) along X and Y axes, to position the bowling ball (74) relative to the vertical axis (Z) of a hole boring bit (30). The hole boring (30) is both rotated and moved vertically downwardly to form a finger or thumb hole in the bowling ball (74). Multiple passes of the hole boring bit (30) may be made into the bowling ball (74), with the bowling ball (74) being adjusted sideways in position a small amount between each pass, to give the hole an oblong cross section.
REFERENCES:
patent: 2269946 (1942-01-01), Lange
patent: 2283469 (1942-05-01), Shepard
patent: 2428669 (1947-10-01), Hopkins
patent: 2490120 (1949-12-01), Ellison et al.
patent: 2508281 (1950-05-01), Miller et al.
patent: 2879679 (1959-03-01), Neff
patent: 2910780 (1959-11-01), Neff
patent: 2973674 (1961-03-01), Hladik
patent: 3085476 (1963-04-01), Sloan et al.
patent: 3095767 (1963-07-01), Jesonis
patent: 3110226 (1963-11-01), Dionne
patent: 3124018 (1964-03-01), Gough
patent: 3137074 (1964-06-01), Jesonis
patent: 3143901 (1964-08-01), Bawtinheimer
patent: 3167326 (1965-01-01), Heessels
patent: 3179013 (1965-04-01), Goldsmith
patent: 3262340 (1966-07-01), Sammons et al.
patent: 3271870 (1966-09-01), Blaker et al.
patent: 3329043 (1967-07-01), Stanford
patent: 3349647 (1967-10-01), Stan
patent: 3382740 (1968-05-01), Lotta
patent: 3415146 (1968-12-01), Schroeder, Jr.
patent: 3465619 (1969-09-01), Blaker et al.
patent: 3521506 (1970-07-01), DiNardo
patent: 3689165 (1972-09-01), Small
patent: 3714703 (1973-02-01), Maples
patent: 3805394 (1974-04-01), Marberg
patent: 3843276 (1974-10-01), Williams
patent: 4534093 (1985-08-01), Jahnke et al.
patent: 4561642 (1985-12-01), Parque
patent: 4684113 (1987-08-01), Douglas et al.
patent: 4815903 (1989-03-01), Skidmore, Sr.
Ellison John D.
Hoppe Ronald F.
Barnard Delbert J.
Briggs William
Pro Shops Unlimited
LandOfFree
Apparatus and method for forming finger and thumb holes in bowli does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for forming finger and thumb holes in bowli, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for forming finger and thumb holes in bowli will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-972133