Jack Device Used for Lifting Objects

| View Cart ⇗ | Info

A jack is mechanical device used to lift heavy loads or apply great forces. Jacks employ a screw thread or hydraulic cylinder to apply very high linear forces. A mechanical jack is a device which lifts heavy equipment. The most common form is a car jack, floor jack, or garage jack which lifts vehicles so that maintenance can be performed.


Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)


TIFF (full resolution)

1772×2400, 399.9 KiB

Large GIF

756×1024, 59.0 KiB

Medium GIF

472×640, 31.4 KiB

Small GIF

236×320, 11.6 KiB