US77283A - Smith head - Google Patents

Description

`SMITH AHEAD, OF HALIFAX, PENNSYLVANIA.

Letters Patent Nh. 77,283, dated April 28, 1868.`

IMPROVEMENT IN seinem-MACHINES.'

. ein Stimuli feierten tu in tigen Enters mint mit mating gni .nt riesame.

T0 ALLWHOM IT MAY GONCERN Be it known that I, SMITH HEAD, of Halifax, in the county of Dauphin, and State of Pennsylvania, have invented a. new and improved Shingle-Machine; and I do hereby declare the following to be a. full, clear, and

exact description of the same, reference'being had to the accompanying drawings, forming part oi' this specili-v cation, and inwhich- Figure 1 is a top View of my invention.

Figure 2 Vis a side elevationfot' the same.

Figure 3 represents the auxiliary apparatus S;

Figure 4 represents a longitudinai vertical seotionof my machine, vand Figure 5 a cross-'section of the same.

Similar letters of reference indicate corresponding parts.

This machine has two carriaes` arid two sets of saws, and cuts a shingle at veach forward or backward motion of either carriage. It 4has a new apparatus for adjusting the bolts to the saws, and a new' edgingapparatus. v

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will proceed to describe it in detail. Y

In the drawings- A A A represent the legs of the machine, supporting the frame,B'B. C Cl C2 Cs are the saws, and'D D are the carriages. E E are the shafts, by which the power is applied to the machine, they receiving it from the main driving-shaft of the mill. F is a shaft, bearing in boxes in the lower side beams ofthe frame B, receiving its motion by a. helt,f, working on the shaft Eend the drum ff, At each extremityit is provided with cranks, G G, working in directions opposite to one another, and operating the pitmen H H. The latter are hinged. to the lower end of ,thexed arms I I, attached rmly to the under side of the carriages D D. 4By this means, as-the shaft F revolves, the carriages D D move back and forth, alternating with each other.v

.An upright shaft, K, stands in the centre of themachine, supported in boxes in the cross-beams K' K, and hearing two stout arms, M M', firmly fixed to it, and extending across the machine, so that their extremities come in contact` with the arms I I of the carriages, as they move hack and forth, by which means the shaft K is alternately turned partially roundin one direction, and then in the opposite direction. The shaft K, being thus turned hzek and forth, carries with it two stout arms, L L', fixed at its upper end, and extending longitudinally with the machine. At their extremities, the arms L L' have notches, into which t the drums c e upon.

the smvmandrels. The saw-mandrels a a areformed with hearings longer than the boxes in which they work, so as to allow the mandrels to be moved hack and forth longitudinally. Beingvthns formed, they yield readily to the oscillating motion of the arms L L', and thus, while one saw, C, is sawing the bolt, the other saw, C', on the same side of the machine, is held outof the way of the bolt till the carriage reaches the end of its journey in that direction, when its armvI strikes and turns the arm M, which reverses the position of the arms L L', and, thereby, of the sans, shifting each set on both sides of the machine at once.

The aprons mm', fixed to sliding pieces, m" nt, and held between the saws that run on the same mandrel,

I are slid hack and forth with the saws, always maintaining their relative. position with the latter'.

t are belts, operating the saw-mandrels from the shafts E E. There are but tivo saw-mandrels, each one carrying a saw on cach of its' extremities. Whatcvcr motions are-produced inthe saws of one set, will, therefore, be prodnccd in the saws of the soton the opposite side of the machine, and two shingles can he out at the some time.

My carriages are of peculiar construction. A plate, N, slides back and forth in the bed N on the side of the machine. A sliding frame, O, works across this plate, having dogs, o o', on its side towards the saws, to hold the bolts, the dogs being operated by the lever 0.' The extremities of the sliding frame O are provided with cams or steps, pp, in shape like ratchcttecth. A long beam, P, is hinged to the side of the carriage-hed,

N', by short arms, so as to have a parallel-ruler motion; Upon its ends are bevelled blocls,p' p', which, at every movement of the carriage towards them, catch in the cams pp, and force that' end of the sliding frame O in one notch towards the saw. When not at the point where the blocks pp operate upon them, the sliding frames O O' are held irmly to the under plate, N, by the operation oi' pins, not necessary to be shown. This completes the description of the apparatus for sawing the shingle. l

The part of themachine used for edging it is of peculiar construction. An auxiliary saw-mandrel, R, Works in a sleeve, R', the latter itself acting as another saw-mandrel, the former bearing theV secondary saw r, and the latter the saw r'. The mandrel It slides longitudinally in the sleeve R', and can he fixed in any posi-` tion in it by means ofthe stout set-screw s working in the slot s'. The same set-scre"-\r forces the inner mandrel to turn with the sleeve. From a drum on the latter, a belt, ,vpasses to the driving-shaft E.

U U are the bearings of the sleeve-mandrel R'.

By this means the shingle can be edged on both sides at the same instant. The saws 1' 7" can be adjusted to different widths of shingle in an instant, by simply sliding the mandrel R into or out of the sleeve R', an operation which can be performed by striking or shoving the saw 1' on one side or the other with the shingler in hand, as well as by any other means. By filing the teeth of these saws properly, they will catch the shingle and carry it through in the proper manner, with no other assistance than that ei' simply presenting the end of the shingle'till the teeth take hold of it. The shingle, when thus edged, will drop between the belts into a box provided for their reception. I l

The mandrel R may be square, fitting into a square aperture inthe sleeve, and a set-screw used to confine it, instead of the above-described method, it" desired.

As a great deal of timber is wasted in every machine when sawing from square bolts, in consequence of not being able to hold the bolt to the saw when ithas become very th-in, I have prepared the auxiliary apparatus S, shown in fig. 3. It consists of a plate, T, having pins fixed to one of its edges, which operate in slots, o o', in another piece, V, extending along the edge of the plate T, vand .carrying two. arms, w w. One of the slots, e, Iis straight with the piece V; `the other, t', is situated diagonally across it. The arms zo w carry dogs, which hold the thin bolt. Now, by pushing the piece V back and forth, the b'olt will be adjusted for having the shingle properly cut. The whole apparatus S can then be presented tothe saw by lthe hand of the operator, or it may -beattached to the carriage D D', and propelled by its means. It will enable the thinnest-boltto be entirely used up, the last shingle being as perfect as any other.

Having thus described my invention, what I claim as new, and desire to secure by Letters llatent,.is-

1. I claim the arrangement, in a sawing-machine, of the four saws, `Gl C2 Q3, the two mandrels a a', each y bearing two of the four saws, and the oscillating-arms L L", for 4the purpose of communicating a reciprocating motion to the mandi-els, when used in-connection with two bolt-carriages D D', one on each side ofthe machine, and the wholebeing constructed and operating substantially in the manner and-for the purposes specified.

2. I claim the combination of the shaft F, the' cranks G- Gr, the 'ptmen H H', the arms I'I', moving the carriages D D', and the oscillating-post or shaft K', having the lateral Aarms M M', and the longitudinal arms L L', all-the parts being constructed, combined, and operating together substantially as and for the purposes `set forth.

3. The edging-apparatus above described, consisting of the mandrelllt, workingiinthe sleeve-mandrel R', and adjusted therein bythe set-screw s, the mandrels bearing the auxiliary saws rand r', when constructed and operated substantially as and Vfor the purposedescribed.

To the above 'specification of my improvement, I have signed my hand, this 16th day of May, 1867.

` SMITH HEAD.

Witnesses:

Unas. A. Pnrrrr, yGrao. W. RoTnwELL.

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