James T Hartford

6467381, Oct 22, 2002

Jul 5, 2000

09/610210

Laszlo Frecska - Lake Villa IL, 60046
James T. Hartford - Silver Lake WI, 53170

B23B 3100

82158, 82159, 82160, 409232

A tool holder apparatus mountable on a machine spindle which apparatus is adjustable and provides a solid stable support for the tool holder to eliminate any gap or spacing between the end of a machine spindle and the support collar of the tool holder.

7425108, Sep 16, 2008

Jan 25, 2007

11/657896

Laszlo Frecska - Spring Grove IL, US
James T. Hartford - Silver Lake WI, US

B23G 5/06
B26D 1/12

407 41, 407 49, 407 61, 407 63

A method of currently milling multiple splines on a round rod material. Inserts mountable on a milling machine are provided. The inserts each include two sets of milling teeth. The sets or sections of teeth are formed in the arc of a circle to enable milling multiple splines concurrently. The first set of teeth rough mills the grooves for the splines and the second set of teeth provides the finished milling.

51121620, May 12, 1992

Dec 20, 1990

7/630827

James T. Hartford - Prairie View IL
Laszlo Frecska - Highland Park IL

Advent Tool and Manufacturing, Inc. - Mundelein IL

B23G 506

407 49

A cutting tool comprised of tool hardened steel having a holder end and an opposite end. A series of axially extending slots are provided on the tool at an outer circumference of the opposite end. The slots each have a radially extending slot wall positioned so as to extend in a plane that intersects a longitudinal axis of the opposite end. Each of the slots also have a generally radially and diagonally extending slot wall confronting the radially extending slot wall associated therewith. Jig ground pins mounted in the opposite end and extended across a radially inner end of the associated slot. A series of cutter bits are mounted in the slots and bottomed on the jig ground pins positioned at the radially inner end of the associated slot. A series of cutter bits with one of the bits in each of the said slots. A series of wedge shaped shims each being mounted in an associated one of the slots and physically positioned in engagement with and between the radially and diagonally extending slot wall associated therewith and one of the cutter bits.

20110081211, Apr 7, 2011

Dec 4, 2010

12/928088

Laszlo Frecska - Spring Grove IL, US
James T. Hartford - Silverlake WI, US

B23C 5/22
B23C 5/12

407 49, 407113, 407 51

The invention discloses an improved tool and inserts for concurrently milling multiple splines on a round (rod) material. Replaceable inserts having teeth formed to have their cutting edges shaped in the arc of a circle are disclosed. The inserts each include at least two sets of rough milling teeth. The tool holder shank includes recesses which provide a common or universal unit for receiving various sized groupings, each comprising an insert, a wedge for securing the insert, and a supporting member for the insert.

20100166511, Jul 1, 2010

Dec 29, 2008

12/317735

Laszlo Frecska - Spring Grove IL, US
James T. Hartford - Silverlake WI, US

B26D 1/12

407 42, 407 33

The invention discloses an improved tool and inserts for concurrently milling multiple splines on a round (rod) material. Replaceable inserts having teeth formed to have their cutting edges shaped in the arc of a circle are disclosed. The inserts each include at least two sets of rough milling teeth and a fine set of milling teeth. The tool holder shank includes recesses which provide a common or universal unit for receiving various sized groupings, each comprising an insert, a wedge for securing the insert, and a supporting member for the insert.

20080090666, Apr 17, 2008

Oct 11, 2006

11/546105

Laszlo Frecska - Spring Grove IL, US
James T. Hartford - Silverlake WI, US

B21H 3/02

470 10

A tool for cutting tapered threads, said tool being mountable on a tool holder that is in turn positioned onto a spindle of a milling machine controlled by a CNC. The CNC rotates and moves the tool in a pattern to cut a tapered thread on a male connector. The tool includes a step or projection of slightly greater dimension than the threads, and at a position slightly above the threads. During the same operation that the threads are being cut, the tool severs the thin end of the tapered threaded connector to form a blunt end.