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Filter: Categories of Wisconsin Historical Images
Filter: Subject of Machinery industry
Filter: Creator Name of Schoelkopf, L. F.
| Date: | 1924 |
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| Description: | View up ramp towards the "Auto Wash" entrance door of a brick building using the Air-lec pneumatic door opening system invented by Louis Schoelkopf. |
| Date: | 1922 |
|---|---|
| Description: | Air-Lec automatic door opening button, which reads: "Schoelkopf Mfg. Co. Madison, Wis. AIR-LEC Opens or Closes Doors Automatically PRESS." |
| Date: | 1922 |
|---|---|
| Description: | Interior view of the Schoelkopf Air-Lec Manufacturing facility at 320 N. Third Street. A number of signs on the back wall describe the Air-Lec's features. |
| Date: | 1922 |
|---|---|
| Description: | Framed display of a photograph or illustration of double doors with the Air-Lec automatic door opener system. The sign on the door reads: "Sound Horn! Air-... |
| Date: | 1922 |
|---|---|
| Description: | A young girl is standing in front of a curtain while reaching up a hand to push a button that will open Air-Lec automatic doors. Equipment is on the left. |
| Date: | 1922 |
|---|---|
| Description: | Air-Lec automatic door opener indoors. This device, which was pneumatic, is installed on a garage door. |
| Date: | 1922 |
|---|---|
| Description: | Indoor view of an Air-Lec automatic door opener on a sliding garage door. There is a Ford car in the garage stall. The license plate on the car is 30-033. |
| Date: | 1922 |
|---|---|
| Description: | Air-Lec pneumatic automatic door opener with button and wire set up on a board. The manufacturing plant on N. Third Street began operation in 1922. |
| Date: | 1922 |
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| Description: | Outdoor view of an Air-Lec automatic door opener for swinging doors set up on a wood plank on a rooftop. Probably the top of Schoelkopf's manufacturing pla... |
| Date: | 1922 |
|---|---|
| Description: | Air-Lec pneumatic automatic door opener set up on a table on a roof. Probably the roof of Schoelkopf's manufacturing plant at 320 N. Third Street. |
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