US26533A - Device for feeding the bolt in shingle-machines - Google Patents

Description

'miran STATES* PATENT onnicn.

OREN STODDARD, OFBUSTI, NEWT YORK.

DEVICE FOR FEEDING- THE BOLT INV SHINGLE-MACHINES.

Specification forming part; of Letters Patent No. 26,533, dated December 20 1859; Reissued April To all whomflt 'may corwern;`

Be itknown that I, OBEN STODDARD, of Busti, infthe county of Chautauqua and State of New York, have invented a new and Improved Shingle-Machine; and I do .hereby declare that the following is a full, clear, and eXact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1, is a side view of my invention.

Fig. 2, is a plan or top view of ditto. Fig.

3, is a transverse vertical section of ditto, taken in the line m, Fig. l. Fig. 4l, is a detached side view of the knife gate and knife.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to certain improvements in that class of shingle machines in which a reciprocating knife is employed for riving the shingles from the bolt.

The invention consists in a novel arrangement ofthe feeding device for presenting the bolt obliquely and automatically to t-he knife so that the shingles will be rived from the bolt intaper form.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, represents a frame which may be constructed in any proper way to support the working parts and B, is a liy wheel placed in said frame at one end and having a crank C, at one end of its shaft. This crank C, has one end of a pitman D, connected to it, the opposite end of said pitman being connected by a joint a, to a knife gate or frame E. This knife gate or frame E, is formed of a metal bar or bars and has three sides, as shown clearly in Fig. 4, the bottom of the gate or frame being open. To this gate or frame the knife F, is attached. This knife is formed of a thin steel plate of equal thickness throughout, the cutting edge being formed by a basil as usual. The knife F, may be secured to the gate or frame by bolts or screws and it should be strained on the frame so as to render it as stiff as possible. The knife is attached to the inner side of the gate or frame.

To the outer side of the gate or frame two friction rollers b, b, are attached, one near its front and the other near its back end. These friction rollers are fitted in guides G, Gr, which are attached to the frame A. The guides G, are simply metal bars grooved longitudinally to receive the rollers b, and the lower part of veach guide is attached to the framing by a screw c. In the upper part of* each guide an oblong slot d, is made longitudinally and througheach slot cl, a screw bolt e, passes, said bolts passing through vertical slots inthe frame, A. By this means of attaching theguides Gr, G, to the frame it willl be seen that they may be adjusted in a more or less inclined position and either parallel with each other or not as may be desired.

In the frame A, and just back of the knife F, there are placed two vertical shafts H, H', the lower parts of which are provided with uted sections g, g. The Vshaft H, is fitted in `permanent bearings but the lower bearing of the shaft H', is fitted,l in. a slide b, one end of which is connectedy with av bent lever z', having a weight I, attached, the opposite end of the slide being con-VV nected with a lever J. On the upper end of each shaft H, H', a ratchet y', is secured.

These ratchets are each provided with alternate long `and short teeth as shown clearly in Fig. 2. Into each ratchet y', a pawl k, catches, the pawls being kept engaged therewith by springs l. One pawl lo, is connected directly to a slide K, the other is connected to the slide through the medium of a lever L, as shown in Fig. 2. One end of the slide K, is connected to a spring m, which has a tendencyto keep the slide at the end of its movement in the direction toward the fly wheel.` The opposite end of the slide K, has a lateral projection n, and the front end of the knife gate or frame has a vertical projection o.

The operation is as follows: The bolt shown in red, is placed on the frame A, and between the fluted sections g, g, of the shafts H, H', the weight I, keeping the fluted sections of the shaft H, snugly against the bolt. Motion is given the shaft of fly wheel B, by any convenient power and a reciprocating motion is given the knife F, by means of the crank C, and pitman D. The knife F, has more or less of an oblique movement relatively with the bolt and it cuts a shingle therefrom each time it descends, the Obliquity of the cut being regulated by adjusting the ides G, G, as previously alluded to. T e bolt is fed to the knife just previous to the termination of its upward stroke in consequence of the projection o, on the gate or frame E, strkinvr the projection n, on the slide K, which is thereby moved a certain distance and the pawls la, made to actuate the ratchets j, j, and the shafts H H', and iuted sections e, will be turned a requisite distance to feed the bolt properly to the knife. The two ratchet-s j, j, are operated simultaneously and in reverse directions as indicated by the arrows in Fig. 2, but the pawls 7:, 7c, do not both engage at the same time with corresponding teeth in the ratchets, that is to say, when the pawl 7c of one ratchet is operating on a long tooth, the

pawl lc, of the other ratchet is engaged with a short tooth, consequently it will be seen that the bolt will not be fed to the knife at right angles therewith but obliquely and alternately in opposite positions, so that the knife will cut the shingles in taper form and with the butts alternately from either side of the bolt. Vhen the knife cornmences its downward movement the spring m, throws the slide K, back to its original position so that the pawls can engage with the ratchets for a succeeding operation of the feed movement as the knife ascends.

When the bolt has a straighteven grain, the knife F, may descend and cut the shingles with a straight drawing cut and perforni smoothly, but when the grain is ircausa regular and the Wood hard and compact, the knife is made to work with less power and to `cut smoother by giving the knife a rolling drawing cut which compound movement is obtained by adjusting the guides G, G, out of a parallel position with each other. By having the knife F, formed of a thin plate of steel secured to a gate or frame E, the knife is made to cut with less power than usual andwithout tearing or breaking the grain, as the knife is per mitted to follow or conform to the grain sufficiently to prevent such a result. A smooth cut is thereby insured and the shingles by not having the grain of the wood broken or ruptured are not liable to warp or spring as those Which have the cells of their liber exposed by the cutting or breaking of the same.

Having thus described my invention what I claim as new and desire to secure by Let ters Patent, is,

The ratchets j, j, attached to the feed shafts H, H, provided each with alternate long and short teeth and operated by the pawls 7c, It", and slide K, from the knife gate or frame E, in the manner specified.

OREN STODDARD.

Witnesses:

C. M. HUGHES, MICH. HUGHES.

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