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The San Mateo County Historical Association
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The mission of the San Mateo County Historical Association is to inspire wonder and discovery
of the cultural and natural history of San Mateo County.


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Image of 2016.026.001 - General Electric Electron Beam Generator Console, 1957. This console is part of the controls for the first electron beam generator produced by General Electric for the Raychem Corporation. "Beam 1" was used by the Raychem Corporation in Menlo Park, California, and later by Tyco Electronics when it bought Raychem in 1999. It was the first electron beam accelerator ever put into commercial use.
The console is rectangular with rounded edges, and it has a sloping face with multiple dials, buttons, and meters. The unit is painted dark green, and multicolor labels are adhered to the surface. The console mounts to a metal stand that was made in-house in the Raychem machine shop.  Above the horizontal console unit is a vertical piece of plywoold that includes more contols, including the unit where the key goes to run Beam 1.  This also mounted to a stand at one time that stood directly behind the horizontal console.

An excerpt from General Electric Product Data Sheet A4610, August 1959 describes the console. This datasheet is for a slightly later model that is of similar design to this artifact:

"Console - Provides control and metering of voltage, current, beam position, deflection amplitude, and beam focusing. Also controls beam phasing, and meters ion chambers.  /  Includes switches for control of timer, shutter, manual or automatic voltage and current operation, interlock test, surge test-reset, MG-set on/off, electron beam on/off  /  Pilot lights indicate line power, MG-set on, ready, surge, electron-beam on, timer in and shutter open.  /  Can be desk or wall mounted."

2016.026.001 - General Electric Electron Beam Generator Console, 1957. This console is part of the controls for the first electron beam generator produced by General Electric for the Raychem Corporation. "Beam 1" was used by the Raychem Corporation in Menlo Park, California, and later by Tyco Electronics when it bought Raychem in 1999. It was the first electron beam accelerator ever put into commercial use. The console is rectangular with rounded edges, and it has a sloping face with multiple dials, buttons, and meters. The unit is painted dark green, and multicolor labels are adhered to the surface. The console mounts to a metal stand that was made in-house in the Raychem machine shop. Above the horizontal console unit is a vertical piece of plywoold that includes more contols, including the unit where the key goes to run Beam 1. This also mounted to a stand at one time that stood directly behind the horizontal console. An excerpt from General Electric Product Data Sheet A4610, August 1959 describes the console. This datasheet is for a slightly later model that is of similar design to this artifact: "Console - Provides control and metering of voltage, current, beam position, deflection amplitude, and beam focusing. Also controls beam phasing, and meters ion chambers. / Includes switches for control of timer, shutter, manual or automatic voltage and current operation, interlock test, surge test-reset, MG-set on/off, electron beam on/off / Pilot lights indicate line power, MG-set on, ready, surge, electron-beam on, timer in and shutter open. / Can be desk or wall mounted."

Object Type: Object

Image of 2009.004.011 - San Mateo County Sheriff Jacket, c. 1960, n.d. Long sleeve zip-up jean jacket with blue satin lining. The front of the jacket has a bellow pleated pocket on each side. The pockets are lined with the blue satin fabric and have a gold embossed button in the center with a snap button on both of the corners of the flap. The gold buttons are embossed with text reading, "EUREKA  /  CALIFORNIA" and have a small embossed portrait. The zipper on the front of the jacket is placed in the center and is gold. Above the proper left side pocket there is a rectangle jean patch with a grommet at the top and bottom of the patch. Above the zipper is a collar with a notched lapel. The shoulders of the jacket have an epaulet on each side with a gold embossed button and a triangular end. The top of the sleeves have a shield shaped patch that reads, "SHERIFF  /  SAN MATEO  /  COUNTY" and a sergeant gold-on-black chevron patch. The bottom of the sleeves have a black band with gold trim sewn width-wise on the outer-half of the sleeve. Above the band, on the proper left sleeve there are two embroidered gold stars. The jacket has a half belt sewn into the waist. A waist strap with triangular trim are sewn to each side with two plastic blue buttons sewn to the jacket, to adjust waist size. Inside the jacket there is a slit pocket in the proper right side and above the pocket there is a black cloth label with white stitching that reads, "MC". At the top of the lining there is a black cloth strap, to hang jacket.

2009.004.011 - San Mateo County Sheriff Jacket, c. 1960, n.d. Long sleeve zip-up jean jacket with blue satin lining. The front of the jacket has a bellow pleated pocket on each side. The pockets are lined with the blue satin fabric and have a gold embossed button in the center with a snap button on both of the corners of the flap. The gold buttons are embossed with text reading, "EUREKA / CALIFORNIA" and have a small embossed portrait. The zipper on the front of the jacket is placed in the center and is gold. Above the proper left side pocket there is a rectangle jean patch with a grommet at the top and bottom of the patch. Above the zipper is a collar with a notched lapel. The shoulders of the jacket have an epaulet on each side with a gold embossed button and a triangular end. The top of the sleeves have a shield shaped patch that reads, "SHERIFF / SAN MATEO / COUNTY" and a sergeant gold-on-black chevron patch. The bottom of the sleeves have a black band with gold trim sewn width-wise on the outer-half of the sleeve. Above the band, on the proper left sleeve there are two embroidered gold stars. The jacket has a half belt sewn into the waist. A waist strap with triangular trim are sewn to each side with two plastic blue buttons sewn to the jacket, to adjust waist size. Inside the jacket there is a slit pocket in the proper right side and above the pocket there is a black cloth label with white stitching that reads, "MC". At the top of the lining there is a black cloth strap, to hang jacket.

Object Type: Object