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Manufactured By:
W. Giles
St. Louis, MO; Cincinnati, OH; Chicago, IL
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Title: |
1879 Ad-W. W. Giles-Drag Sawing Machine |
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Source: |
W. W. Giles Advertising Pamphet 1879 |
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Insert Date: |
10/24/2016 1:39:14 PM |
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The main frame is about eight feet long, the front end resting upon the log which is being sawed, The seat upon which the man is seated has sufficient spring or vibration in it to allow the machinery to work, E is a wedge, which is fastened with a hinge, and when the log pinches the saw the wedge is turned over to the right and driven into the curf of the saw, and thus loosens it. FF are treadles upon which the operator places his feet, and when his weight is mostly all on these treadles the saw is driven from him through the log, and at the same time he pulls with his hands on the main lever, which more than doubles the force, and thus it is clearly seen that the weight of the operator, together with the power of his arms, drives the saw with greater force from him through the log. Then, it may be asked by those not having a thorough mechanical perception, how is it that the opera-tor’s weight helps him to draw the saw backward toward him? We answer thus, viz: When the operator pushes on the lever before him, he transfers his Weight from his feet to his seat, and this being a natural movement, he does it without forethought or notice, and by pushing on the lever quite hard, he really puts more than his ordinary weight on the seat. Then it is clearly seen that when the operator’s Weight is changed from the treadles to the seat, the seat is thereby pressed down, and it being attached to the lever and pivoted to the top of the vibrating standard, the lower end of the lever is forced backward, drawing the saw with it, and all the weight of the operator is thus utilized in drawing the saw backward towards him, and thus his weight, combined with what he pushes with his hands on the lever, exerts great power on the saw. The main lever that the operator uses with his hands is pivoted (at the lower end) to the pitman of the saw; near C B is the guide weight which rolls on top of the saw, and is used when you wish to saw very fast. The saw has a three-foot stroke. |
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1879 W. W. Giles-Drag Sawing Machine
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