US102606A - Improvement in sawing-machines - Google Patents

Description

UNITED STATES PATENT OFFICE.

-ADDISON SMITH, OF PERRYSBURG, OHIO.

IMPROVEMENT IN SAWING-MACHIES.

. Specification forming part of Letters Patent No. l 02,606, dated May y3, 1870; antedated April 23, 1870.

To a/ZZ whom it may concern.:

Be it known that I, ADDrsoN SMITH, of Perrysburg, in the county of Vood and State of Ohio, have invented a new and useful Improvement in Hand-Power Saws; and I do hereby declare the following description, taken in connection with the accompanying plate of drawings, hereinafter referred to, forms a full and exact specification of the same, wherein I have set forth the nature and principles of my said improvement, by which my invention may be distinguished from others of a similar class, together with such parts as I claim and desire to secure by Letters Patent.

The nature of my invention consists in reciprocating a drag-saw bar by means of a metallic fly-wheel, to the axes of which a spurgear, commonly termed a sun-wheel]7 is firmly secured, which said sun-wheel isconnected and actuated by a spur-gear, commonly termcd a planet-gear, revolving about the' same, and operated by a connecting-rod attached to the said planet-wheel by means of a hinge 5 in securing the frame supporting the devices aforesaid in position by means of metallic shoes and fastenings; and in an appliance termed a sliding guide,77 which holds the said saw in position and forces the same against the wood to be cut.

In the accompanying plate of drawings, which illustrate my invention and form a part thereof, and in which like parts are represented by similar letters, Figure 1 is a perspective View, showing the application and operation of my invention when the saw is made to reciprocate in a vertical plane. Fig. 2 repv resents the saw reciprocating in a horizontal plane, and illustrates the devices made use of for holding the same in position. Fig.- 3 is a detached view.

The construction of my invention is as follows: The saw-bar A is attached to the driving-wheel B by the crank-pin I).

The said wheel is rigidly attached to the cylindrical shaft C, which has its bearings in journal-boxes upon the longitudinal bars D and E of the frame. The said frame is secured in position by means of the perforated metallic strap d, bolted to the end of the beam' which fits over the tapering pivot-bolt d, secured to the substance to be cut, and the angular metallic feet f, bolted to the legs F of the center of the planet-Wheel K, by means of the metallic strap L, which preserves a constant distance vbetween the respective centers of the said gears, and has its bearings upon journal e, about which it revolves. The handle or connecting-rod M is connected with the planetwheel aforesaid by means of the hinge N. When it is desirable to canse the saw to recirocate yin a horizontal plane, a modification in details, as set forth above, becomes necessary, to wit: The driving-wheel B revolves upon a vertical shaft, C, having its bearings in .journal boxes secured to the longitudinal beams O, Fig. 2. The saw-bar A rests upon the transverse beam P of the frame, and the saw-blade is held in position and forced against the substance to be cut by means of the travcling guide R, which slides upon the metallic rail S, and is operated by the Weight T, attached to the same by means of the cord u.

The operation of my invention is as follows: The tapering pivot-pin d having been driven into the substance to be sawed, the eye in the metallic strap d, attached to the beam D, isY

dropped over lthe same, thus preventing the machine from being moved longitudinally,but

allowingthe saw to assume any angle with the substance tov be cut which may be deemed desirable. The spurs on blades j' are then inserted, and the machine is secured firmly in position, Power being applied at the connecting-rod or handle, a reciprocating motion is imparted to the same, which is converted into rotary motion by means of the appliances hereinbefore described-5. e., the planet-wheel K, by the motion received from the connectingrod, is made to circulate around the central wheel or sun-gear, I, communicating to the said sun-wheel a velocity of revolution four times rIhe said sun-gear, being keyed to the axle of the driving-wheel B, imparts the rotary motion to the same required for the l The sun-gear Lplanet-gear K, strap L, when purpose of actuating the saw-b1ade Q. combined with the axle C and handle O, and Having thus stated the nature of my inven arranged to operate as and for the purposes ton, and described the construction and operdescribed.

ation of the devices and appliances made use ADDISON SMITH.

of in developing the same, I will indicate those Vitiresses:

features which I claim to be new and desire E. E. SMITH,

t) secure by Letters Patent- 1 I. J. HERRMAN.

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