William A Chisholm

US Patent:

42065437, Jun 10, 1980

Filed:

Nov 30, 1978

Appl. No.:

5/965008

Inventors:

William M. Chisholm - Midlothian VA

Assignee:

Western Electric Company, Inc. - New York NY

International Classification:

H05K 330

US Classification:

29739

Abstract:

A pin-insertion tool 30 for inserting a replacement pin 12a into a vacant aperture 26a of a wiring board 10 includes a guide member 32 having alignment slots 74 for aligning the tool with a row of in-board pins 12. A pin-insertion member 36 is slidably mounted adjacent to the guide member 32 and includes a pin-retaining means 50 for releasably retaining portion of the replacement pin 12a. The pin-retaining means 50 is positionable in the plane of the alignment slots 74 of the guide member 32 to facilitate insertion of the replacement pin 12a at a uniform orientation with the row of in-board pins 12.

US Patent:

42655080, May 5, 1981

Filed:

Nov 30, 1978

Appl. No.:

5/965219

Inventors:

William M. Chisholm - Midlothian VA

Assignee:

Western Electric Company, Inc. - New York NY

International Classification:

H01R 1340

US Classification:

339221R

Abstract:

Terminal pins (18) in a terminal pin strip (16) are integrally interconnected by webs (22) located intermediate free insertion ends (18i) and free connector ends (18c) of the pins so that when the webs are severed to separate the terminal pins, the severing operation does not disrupt the integrity of smooth finished surfaces on the connector ends of the pins. Each terminal pin (18) also is formed with an intermediate push shoulder (18ps) for applying pressure on the pin to insert the pin into an aperture (20a) in a support structure, such as a printed wiring board (20), without damaging the connector end (18c) of the pin. Assembly of the terminal pins (18) into the printed wiring board (20), utilizing terminal pin strips (16) on respective supply reels (24), is accomplished with apparatus comprising a pair of pin transporter mechanisms (26), a pair of web-severing punch-and-die mechanisms (28), and a pin insertion mechanism 30.

US Patent:

42851238, Aug 25, 1981

Filed:

Dec 21, 1979

Appl. No.:

6/106115

Inventors:

William M. Chisholm - Midlothian VA

Assignee:

Western Electric Co., Inc. - New York NY

International Classification:

H05K 330

US Classification:

29764

Abstract:

A pin-removal tool (36) for removing a damaged or defective pin (23a) from a printed wiring board (21) includes a handle (37) and a shaft (38) extending from one end of the handle. The tool (21) further includes a sleeve (58) which is threadedly attached to the shaft (23) to facilitate rotational and axial movements therebetween. A pin-removal member (39) is fixedly attached to the shaft (38). The pin-removal member (39) includes a bore (42), a transverse slot (44) at one end of the member and a pair of shoulder-retaining portions (55) which aid in the removal of the pin (23). Laterally extending shoulders (29) of the pin (23a) are positioned within the slot (44) and the tool (36) is rotated ninety degrees to position the portions (55) adjacent to the shoulders. The sleeve (58) is then rotated while being held axially against the board 10. Upon rotation of the sleeve (58 ), the shaft (38) moves axially within the sleeve whereby the portions (55) pull the pin (23a) axially from the board (21).

US Patent:

43400930, Jul 20, 1982

Filed:

Feb 26, 1980

Appl. No.:

6/124677

Inventors:

William M. Chisholm - Midlothian VA
George S. Davis - Richmond VA
James C. Dougherty - Mechanicsville VA

Assignee:

Western Electric Co., Inc. - New York NY

International Classification:

B21F 102

US Classification:

140147

Abstract:

A plurality of pins (21) supported by a backplane (22) are initially processed through a straightening operation within a pin straightening apparatus (23) while using a preselected straightening amplitude. The centroids of a statistical sample of the pins (21) are then measured to obtain a measure of pin deviation from nominal. The measured data is then processed by a computer (48) to determine statistical values for mean deviation from nominal and standard deviation. Using the statistical values, a determination is made as to whether another straightening operation is required. If another operation is required, a modified straightening amplitude is determined by using the statistical values and is established within the pin straightening apparatus (23). The pins are then processed through the second straightening operation using the modified straightening amplitude.

US Patent:

43720447, Feb 8, 1983

Filed:

Oct 31, 1980

Appl. No.:

6/202805

Inventors:

William M. Chisholm - Midlothian VA

Assignee:

Western Electric Company, Inc. - New York NY

International Classification:

H05K 322
B23P 1900
B21F 102

US Classification:

29845

Abstract:

First end portions (22c) of terminal pins (22) are gripped in a gripping means (54) on one side of a substrate (24) and intermediate portions (22cs) of the pins then are inserted into the substrate. In the insertion operation, second opposite end portions (22i) of the pins are extended into a straightening means (74) on the opposite side of the substrate (24). Tip portions of the first pin end portions (22c) then are disposed in the gripping means (54) and tip portions of the second pin end portions (22i) are disposed in the straightening means (74). To straighten the pins (22), relative reciprocating movement then is caused between the pin intermediate portions (22cs) and the pin tip portions to flex and coldwork the first and second pin end portions (22c and 22i) in a lateral direction simultaneously.

US Patent:

43653987, Dec 28, 1982

Filed:

Jul 31, 1980

Appl. No.:

6/174061

Inventors:

William M. Chisholm - Midlothian VA

Assignee:

Western Electric Company, Inc. - New York NY

International Classification:

H05K 300
B23P 2300

US Classification:

29845

Abstract:

Terminal pins (18) in a terminal pin strip (16) are integrally interconnected by webs (22) located intermediate free insertion ends (18i) and free connector ends (18c) of the pins so that when the webs are severed to separate the terminal pins, the severing operation does not disrupt the integrity of smooth finished surfaces on the connector ends of the pins. Each terminal pin (18) also is formed with an intermediate push shoulder (18ps) for applying pressure on the pin to insert the pin into an aperture (20a) in a support structure, such as a printed wiring board (20), without damaging the connector end (18c) of the pin. Assembly of the terminal pins (18) into the printed wiring board (20), utilizing terminal pin strips (16) on respective supply reels (24), is accomplished with apparatus comprising a pair of pin transporter mechanisms (26), a pair of web-severing punch-and-die mechanisms (28), and a pin insertion mechanism 30.

US Patent:

43986285, Aug 16, 1983

Filed:

Nov 30, 1981

Appl. No.:

6/326103

Inventors:

William M. Chisholm - Midlothian VA

Assignee:

Western Electric Company, Inc. - New York NY

International Classification:

B65G 4700

US Classification:

198339

Abstract:

A plurality of pins (20) are supported and held within a pin supporting shuttle (54) by wedging the shank portion (24) of each of the pins between a respective one of a plurality of spaced parallel channels (58) and a ramp (62). The shuttle (54) is then moved to place a free end of each of the pins (20) in a gripped position within an insertion apparatus (55). The shuttle (54) is manipulated so that the shank portion (24) is allowed to return to a normal axis of each respective pin (20). The shuttle (54) is then removed from about the pins (20).

US Patent:

45180857, May 21, 1985

Filed:

Sep 30, 1983

Appl. No.:

6/537542

Inventors:

William M. Chisholm - Midlothian VA
Fred E. Thompson - Quinton VA

Assignee:

AT&T Technologies, Inc. - New York NY

International Classification:

B65D 138
B65D 2100

US Classification:

206454

Abstract:

An article of manufacture having specific utility as a multi-purpose, stackable transport tray for printed-wiring boards and accessories therefor in reusable carrier shuttles and comprising an open-work base with side portions extending upward from the base. A shelf runs the inside length of each side portion with a plurality of fin-shaped support members spaced away from the shelf by an arbitrary amount and extending inwardly from the side portion. A plurality of stiffening members extend from the base to the shelf. A plurality of ribs on the bottom surface of the base extend in a direction parallel with the sides and positioned so as to interlock and engage the support members of an underlying tray. A plurality of transverse ribs on the bottom of the base are also so positioned to engage the support members of an underlying tray.

Author:

William Chisholm

ISBN #:

0679300767

Author:

William Chisholm

ISBN #:

9027228647