US75846A - bishop - Google Patents

Description

@atten gratas' atmt @filtra WILLIAM n.. BISHOP AND ORIEL D. BISHOP. OF 'nARnIS-ON, WISCONSIN.

Laim Pate-m No'. 75,846,0zaa0z March 24, 186s.

tllge ,Stimuli aterra itu ia that teitat'aimt ma .mating part nf tige stmt.

`'.lO ALL WHOM ITv MAY CONCERN: i

Be it known that we, WILLIAM R. BISHOP and OnInL D.'BIs noI of Harrison, in the county ot Calumet, and State of Wisconsin, have invented a new and improved Steve-sawing Machine; and we do hereby declare that the following is a fulL-clear, and exact description thereof, which will enahle others `skilled in the art to make and usethe same, reference being had to the accompanying drawings, forming part of this specification. This invention relates to a new and improved machine for 'sawing staves fr barrels and other articles -of similar construction; and the inventionconsists in the construction 'and arrangement of parts, as will 'hereinafter be described. f v v Figure 1 represents a longitudinal side view of the machine.-

Figure 2 is a top or plan view. y Figure'B is a detached view of the feed-works on an enlarged scale. Figure 4 is'a view of a double rack employed'on the table in feeding up the bolt to be sawed. Similar lettersjof reference'indicate corresponding parts. d

A represents `,the frame, to which the saw and other 'apparatus are attached. B is the driving-shaft; C is thedriving-pulley. D D represent cranlbwhcels, on kthe ends of the driving-shaft'B. E is a table or apron, which is attached to a bent shaft, marked F, the formot which shaft is plainly seen in fig. 1. G G represent racks, which are rigidly attached to the shaft Fon each side of the apron E, as seen in the drawing. The ends of this shaft, F, form pivots, a a, iig, 1, in the frame, which allow-theapron and the parts connected with it to he'raised and rlowered, as occasion may require, in the process of sawing staves. On the top of the apron E, but attached to it by lips onthe under side, so .-as` to allow it to slide hack and forth on the apron, thereis an arrangement for (logging or holdingthe block or'holt to be sawed, and also for feeding the same up to the saw.

j' is a handle, attached to theapron E. hina plate, which is attached to the apron 'by lips, as 'before men-A tioned, and which slides on it. isa block on this plate, against which the bolt to be sawed is fastenedby the dogs c c, as seen in ig. 2. K represents a holt, which is thus fastened or dogged. vOne ofthe dogs is stationary or fixed to the block. J; the other dog is made to slidel onthe face of J, and is'operated by the lever, marked i, as seen in the drawing. This lever is held in place by a ratchet, marked t". Extending across the back edge ofthe plate h there is a shaft, L, which is attachdto the plate hyv hinged joints, and to Veach end of this shaft, L, there is a double pawl, o, which engages with theraeks Gr G. m is ai lever, which is attached to the shaft L, by whichthe shaft is operated or partially rotated, so as to raise or disengage the pawlsfor hold them to the rack, when desired. N is a cord, 4which is attached to the plate h, and which has a weight at its other` end, as

seen in Iig'. 1.

When thepawls are raised from the racks, .the weight will draw backthe plate on the apron, so that a new bolt may be dogged for sawing. These racks `may he made with a double set of'cogs, as seen in the detached view, iig. 4, so that either a thick or a thinner stave may be sawed from the same bolt when desired. y

P representsthe `saw, which is connected with the crank-wheel D by the pitnnan R, from which it receives a reciprocating motion'. y. Y u

The operation will be readily understood from thedrawing. When the holt is dogged -or fastened, as seen in iig. 2, it is fed up to the saw by sliding up the plateE with the `pawls. When the boltis in position, the pawls in the rack hold it in place while the attendant handles the apron, raising it so as to allow the top of the bolt to pass underv the saw, and then. pressing down, and thus feeding the bolt up toithesaw by hand. The pivots a a, 'upon which the apron turns, are designed to be on the same plane as the edge of the saw, so that 'theLpivotswould represent the centre of the circle'ot` which the stave is an arc, the distance of the. pivots to the edge of the saw being thehradius. Arranged in this manner, the edges of the stavewill be of equal thickness. The saw'is curved, as seen in 3, so asgto correspond, or nearly so, with the circle described..` S S, on the frame, indicate guides, which drop down and steady the saw near' each end of the block or holt to be sawed.

Itwill be Vnoticed* that the arrangement of vour frame and driving-shaft, crank-wheels, dto., is such that we can drive two saws, one each side of the frame, as indicated in red lines in fig. 2.

Asthe arrangement for feeding, Snc., would be the same as that already described, no particular description in reference to it is necessary. But we derive an important advantage froml this double action of the saws` from the fact that they are arranged to eut alternately, so that, as far as tho jur er tendency to longitudinal motion is concerned, the machine counterncts itself. As will be noticed, in the throw of our crank, the. stroke ofthe sew is greater than the length of the bolt to be cut. We support the 'snw in proper ways or guides for this especial purpose, and we consider this long stroke necessary to a. successful operation of the machine.

Hcving thus described our invention, what We claim as new, and desire to secure by Letters Patent, is- The combination of the apron E. with the. bent shaft F, whereby the block, from which the Steves are cut, is depressed to beer against the teeth ofthe saw P, to cut a stave of uniform thickness, constructed and operated as herein shown and described.

WILLIAM R.. BISHOP, ORIEL D. BISHOP.

Witnesses:

STEPHEN NrcoLAI, JOSEPH FURSTENBERG.

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