US85676A - Improvement in shingle-machines - Google Patents

Description

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Warme-W- @anniV ffice Letters Patent No. 85,676, dated J wwwa/ry 5,- 1869.

IMPROVEMENT IN' SHINGLE-MACHINES.

The Schedule referred to in these Lettera Patent and making part of the lama.

' reference being had to the accompanying drawings,

which are made part of this specification.

` The subject ofl my invention is a machine for cut ting shingles from the bolt or block, adapted to be operated by man-power. A pair of knives is employed for riving the bolt; said knives moving respectively in vertical and oblique planes, so as to cut the shingles, commencing alterately at buts and points.

vThe feeding-mechanism is actuated bythe upward movement of the vertically-cutting knife, and propels the block or bolt each time a sufficient distance to have a pair of shingles removed.'- A separate pivoted knifeis employed for edging the shingles.

'Figure 1 is a plan view of my improved machine, a portion of the frame being broken away to expose the working-parts; Figure 2 is a side section; Y

Figure 3 is a transverse section on the line a: x, figs. 1 and 2; and Figure 4; is a detached perspective view of one of the plates employed to guide the riving-knives.

The frame of my machine may consist of a bed-piece, A, of any suitable form, having mounted upon it, in about the relative positions shown, upright rectangular frames B C, longitudinal guides I) D', for guiding the feeding-plunger and shingle-blocks, a cross-piece, E, spanning said guides, and a table, F, for supportelevation, partially in vertical ing and guiding the shingles, while they are beingv edged Hinged to the top of the frame B is a pair of levers, G G', which are supported by links H H', from the ends of springs I I', secured to the top of the frame C, and, passing through said frame, are attached to the knives J J', and through rods K K', to the levers or treadles L L', by which, in connection with the springs I I', they are respectively operated. The said levers are pivoted to the bed-piece A of the frame, as

shown in iig. 1.

'The knives J J' are guided by grooves fm m', in plates M M', attached to the inner faces of the sides of Yframe C, said plates being constructed as represented in fig. '4.

N is the plunger, by which the shingle-blocks or bolts are fed to the knives.

It is provided on its under side with a rack, O, which is meshed by a pinion, P, keyed to a shaft, Q, which shaft also carries a ratchet-wheel, R.

This ratchet-wheel is engaged by pawls S Tthe former of which, S, is pivoted to the end of the reciprocating lever U, and serves to communicate motion 'to said ratchet-wheel, and the latter, T, to prevent' backward movement.

a slot, W, in the The lever U, at the opposite end to that to which the pawl S is pivoted, is connected to a verticallysliding rod, V, whose bent upper end V' passes through side of the frame C, and upper end of the plate M', a sufficient distance to engage with the knife J in its upward movement, so as to communicate its motion to the shaft Q, to propel forward the feeding-plunger.

The plunger may be forced back, to allow more blocks to' be placed before it, by means of the handle N'.

The spring X holds the shingle-blocks from vertical displacement while they are being cut up.

Secured to the end of the table F is a metallic plate or stationary knife, Y, having pivoted to it a knife, Z, by which the edges of theshingles, as theycome from the knives J J', are cut at right angles to their buts,

All the parts being in the positions represented in iig. 2, and one shingle cut from point to but, removed` by the knife J', the treadle L' is released, allowing the knife J to be returned by the --spring I' to the top of the frame, and the treadle L is forced down, cutting oif a shingle from but to point, and allowing the bar V, by its gravity, to force the pawl S up, so as to take hold of another tooth on the ratchet-wheel R. This treadle also being released, the knife J is returned by the spring I toits former position, raising the rod V, and through it and the lever U, paWl S and ratchetwheel It, turning the shaft Q a sufficient distance to feed the shingle-block forward the thickness of two shingles,

The treadle L' is then again forced down, cutting off another shingle from point to but, and released, and so on until the shingle-blocks in the machine are cut up, when the pawls S T being raised, the plunger N may be forced back, by means of the handle N', and a new supply of shingle-.blocks placed in front of it through the opening between the frontend of the guide-piece D' and the frame C.

The shingles, as they come from the knives J J',

are placed on the table F, with their buts against the shoulder f, and with their edges projecting under the knife '.Z, which cuts their edges at right angles to their buts.

Having thus described my invention, What I claim as new therein, and desire to secure by Letters Patent, is .Y y

1. The guide-plates M M', constructed with straight `and oblique grooves m m', and employed in combination with the riving-knives J J', substantially as and for the purpose specified.

l2. The pair of reciprocating knives J J', and the feeding-mechanism It S U V, operatedV by the returnstroke of one of the said knives, all substantially as and for the purposes herein set forth.

ISAAC I. LANCASTER.

I Witnesses: A

Loms PHILIP BRANT, LEVI FAnnswon'rH.

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