Kent A Delventhal

US Patent:

50281763, Jul 2, 1991

Filed:

Jun 13, 1990

Appl. No.:

7/537362

Inventors:

Kent A. Delventhal - Genoa OH
Kenith E. Grosjean - Genoa OH

Assignee:

Toledo Automated Concepts, Inc. - Oregon OH

International Classification:

B23B 3922

US Classification:

408 40

Abstract:

A glass drilling machine for drilling holes in a sheet of glass in which each hole is partly drilled from one side of the sheet and is then finish drilled from the opposite side. The machine is made up of aligned first and second drilling devices which are attached near the ends of first and second pivotable arms, respectively, the first and second arms being periodically pivoted toward and away from the sheet to bring the drilling devices into and out of drilling engagement with the sheet. The first and second arms are releasably clamped to first and second spindles, respectively, which pivot about first and second axes, respectively, the first and second axes being spaced apart but close to one another and positioned remote from the drilling devices. The position of the first arm is adjustable along its longitudinal axis and the position of the second arm is adjustable along the axis of the second spindle. A cooling fluid is circulated through the drilling devices against the sheet, and a pressure sensor is provided to sense cooling fluid back pressure, which will fall suddenly and appreciably at the conclusion of a drilling cycle if a slug drops from the sheet, to control the operation of the machine and thereby ensure the completion of the drilling cycle.

US Patent:

53678346, Nov 29, 1994

Filed:

Oct 20, 1992

Appl. No.:

7/963376

Inventors:

Kent A. Delventhal - Genoa OH

Assignee:

Progress Design and Machine, Inc. - Clyde OH

International Classification:

B24B 900

US Classification:

451285

Abstract:

An apparatus for successively grinding the edges of a series of like, sheetlike articles, such as glass sheets, and especially irregularly shaped glass articles such as automotive windows. The apparatus includes a frame, a table rotatably secured to the frame, a clamp for clamping an article on the table, and a template of the article carried by the table, but at an elevation below that of the article. The apparatus also has a swing arm assembly which carries a spindle near its outer free end, an inner end of the swing arm assembly being pivotally secured to the frame, the swing arm assembly being movable in a plane to move the spindle toward or away from the table. The spindle of the swing arm assembly has a rotatable grinding wheel which is positioned to engage the edge of an article on the table and a motor drive for rotating the grinding wheel. The spindle further has a cam follower which is positioned to engage the edge of the template when the grinding wheel engages the article. The cam follower has a frustoconical outer, template engaging surface, and is translated with respect to the spindle to compensate for grinding wheel wear by changing the diameter of the portion of the cam follower that engages the template.

US Patent:

51730294, Dec 22, 1992

Filed:

Jul 16, 1991

Appl. No.:

7/730488

Inventors:

Kent A. Delventhal - Genoa OH
James M. Klempner - Blissfield MI

Assignee:

Toledo Automated Concepts, Inc. - Oregon OH

International Classification:

B65G 4724

US Classification:

414754

Abstract:

A device (10) for positioning a glass sheet or other generally rigid planar object (G), having a roller bed table (12) for supporting the object in a horizontal plane and an overhead device (14) carrying a first set of spaced apart arms (26, 28, 30, 32), each of which has a vertically acting cylinder (70) near a free end thereof, and a second set of spaced apart arms (20, 22, 24) near a free end thereof, each of which has a horizontally acting cylinder (48) near the free end thereof. Each vertically acting cylinder has a sheet edge contacting element (74) at the free end of its cylinder rod (72), and these edge contacting elements act as fixed stops during the positioning of the object. Each horizontally acting cylinder has a sheet edge contacting element (52) of the free end of its cylinder rod (50), and these edge contacting elements act as movable stops during the positioning of the object. The edge contacting elements of both the vertically acting cylinders and the horizontally acting cylinders can be retracted to positions above the sheet to permit the transferring of a sheet to, and from, the device.

US Patent:

49557637, Sep 11, 1990

Filed:

Feb 10, 1989

Appl. No.:

7/309837

Inventors:

Kent A. Delventhal - Genoa OH
Kenith E. Grosjean - Genoa OH

Assignee:

Toledo Automated Concepts, Inc. - Oregon OH

International Classification:

B23B 3922

US Classification:

408 40

Abstract:

A glass drilling machine for drilling holes in a sheet of glass in which each hole is partly drilled from one side of the sheet and is then finish drilled from the opposite side. The machine is made up of aligned first and second drilling devices which are attached near the ends of first and second pivotable arms, respectively, the first and second arms being periodically pivoted toward and away from the sheet to bring the drilling devices into and out of drilling engagement with the sheet. The first and second arms are releasably clamped to first and second spindles, respectively, which pivot about first and second axes, respectively, the first and second axes being spaced apart but close to one another and positioned remote from the drilling devices. The position of the first arm is adjustable along its longitudinal axis by releasably clamping it to an eccentric portion of the first spindle, so that a change in the circumferential position of the first spindle relative to the first arm will longitudinally reposition the first arm. The position of the second arm is adjustable along the axis of the second spindle by releasably clamping an internally threaded portion of the second arm to an externally threaded portion of the second spindle so that a change in the circumferential position of the second spindle relative to the second arm will reposition the second arm along the axis of the second spindle.