R. G. Griswold

The enclosed sketch shows a very handy combination for the amateur's shop which takes up little room and has a number or points to recommend it. In the first place, the three tools are operated from one driving wheel, the operator standing in any position necessary to properly execute the work in hand.

To the left is shown a scroll or jigsaw, mounted on a rigid arm and having a brace running from a wall behind to prevent vibration while cutting. The table can be tilted to cut bevels. The treadle which drives the fly wheel when the saw is in use is of such length that the operator does not have to reach out with his foot, the length making the angular motion of the foot less and not so tiring. The tread is made wide, to accomodate both feet when sitting for extensive operations or for either foot while standing, without shifting the position of the body.

To the right is shown a grinding and polishing attachment, operated by the same driving wheel. This grinder accomodates several sizes of wheels and a series of buffs and brushes can be attached to the spindle opposite the wheels used for grinding. A rate of ten or twelve hundred revolutions can be readily maintained without fatigue. A pail of water should hang on the right hand side of the grinding shelf to dip tools into when heated by grinding.

To the front of the post is attached a hand drill press which has also an attachment for driving by belt for the small drills which require high speeds. To the left of the drill is shown a shelf upon which a set of drills can be kept and easily reached when needed. Directly beneath is an oil can, placed on the left so that it may be used without taking the right hand from the drill press handle.

The driving wheel should be made very heavy to maintain a steady speed when the tools are working. While all three belts are shown on the driving wheel at once, it is only intended that one belt at a time shall be used, as to run the remaining tools, while working on one, merely consumes power. Three treadles are provided for the convenience of the operator, the one for operating the drill press being placed on top of the one to the left, thus making a connecting rod unnecessary. When not in use it is held up by small wire hook at such a distance above the under treadle that they will not strike. The three attachments are thus compactly mounted, have a solid foundation, and are all operated from one wheel. The saving of valuable space in the amateur's shop is thus made possible, while the value of none of the tools is impaired in the slightest.