US113043A - Improvement in stave-sawing machines - Google Patents

Description

incidir ittat ROBERT w. GEORGE, OE BOSTON, MASSACHUSETTS.

Letters Patent No. 113,043',- aatea March 2s, 1871 animated March 23, 1871.

IMPROVEMENT iN STAVE-SAWING MACHINES.

The Schedule referred to in these Letters Patent: and making part of the same.

To all whom fit may concern v I, ROBERT W. GEORGE, of- Boston, in the county of Suffolk and State of Massachusetts, have invented a certain new and useful Improvement in stave-Sawing Machines, of which the'following is a complete specification.

Nature and Object of the Invention. y

The nature of my invention consists- First, in combining with the carriage of a stavevjointing machine an automatic device for drawing down the stave, holding it until jointed, and then re-' Description of the Drawing.

Figure 1 is a perspective view of my invention. Figure 2 is an elevation, partly in section. Figure 3 isa horizontal section, showing details.

General Description.

A A isla frame,.to which the working parts of the machine are attached, B is a'carriage. having a curved bed, as shown in tigs.'1 and 2, and is carried forward by the rack B1,

which in its turn is actuated by the pinion D.

When the carriage B has passed forward so as to carry thev stave entirely past the edging-saws G C', the pinion D is automatically released from the driving-shaftD4, and the carriage is drawn back to its start-in g point, asshown in-g. 1, by the cord w fw and weightl W At its arrival at this point the pinion D is again automatically clutched to the shaft D4, and the whole action is repeated.

B2 is an arc connected by a radial arm, B, to a pivot on the carriage B, nearB, so that it may pass np through the carriage B.

This arm carrying with it the arc B2, is moved by the action of the xed guide B4, g. 2, upon the starts bZ b3. Thus, when the` carriage B is at its starting point, as shown at Iig. l, then the arc Bz'will extend above the table, as shown;I but after the carriage has-- started, the guide, acting upon thel starts .bz' b3, will draw down this arc, as shown in iig. 2.

That part of' the guide shown at B4, fig. 2, being level, it will be seen that the arc willbe held down during the movement of the carriage forward.

E is a latch, pivoted to the arc B2, as shown, so that I it may hold the end of the stave S.

The latch E has a start, e, iig. 2, which, coming in contact with astop near thev saws, throws the latch back and releases the stave as soon` as it has passed ktheedging-saws.

In fig. 3 I have shown the device that I use for releasing the pinion VD from the driving-shaft D4, which is accomplished as follows:

A side-ratchet, D', is fixed permanently to the pinion D, so that if one revolves the other must, but both are free to slideon the shaft.

P is a pawl fixed to the driving-shaft D4.

d d isan incline, acted upon by the boss b attached to the ratchet-D. This incline acting through the hanger D2, causes it and the ratchet Dl to be thrown up to or off from the pawl P.

The action of my machine is as follows:

The stave to be edged is placed by hand, as shown in fig. 1.` Thus, as the carriage moves forward the arc B2 is drawn down, which action draws the stave onto the bed B and holds it rmly until it has been acted upon by the saws O Of; then the latch E thrown ont Aby coming in contact with the stop, and

the stave, by its own elasticity, springs entirely outA of the machine.

The ratchet is released from the clutch and the car riage returns to its starting point, whereit receives another stave, and the operation is repeated.

C' laims.

Atially as described, and for the purpose set forth.

ROBERT W. GEORGE.

Witnesses:

E. A. NI'oKEnson, FRANKG. PARKER.

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