US8831A - Machine fob joiettlwg shingles - Google Patents

Description

UNITED STATES PATENT FFICE.

WM. STODDARD, OF LOWELL, MASSACHUSETTS.

MACHINE FOR JOINTING` SHINGLES.

Speciication ofLetters Patent No. 8,831, dated March 23, 1852.

To all fui/omit may concern.'

Be it knownthat` I, WILLIAM STODDARD, of Lowell, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Cutting and Planing Shingles, and that the following description, taken in connection with the accompanying drawings, hereinafter referred to, forms a full and exact speciiication of the same, wherein I have set forth the nature and principles of my invention, by which it` may `be distinguished from others of a similar class, together with suchparts as I claim and desire to have secured to me by Letters Patent.

The figures of the accompanying plates of drawings represent my improvements.

In Plate l, Figure l is a plan of shingle machine and Fig. 2 a side elevation of the same. In Plate 2, Fig-53 is an end view,

Fig. 4 a detail view of the back side of theV jointing apparatus, Fig. 5 a view of the opposite side of thesame and Fig. 6 is a detail sectional view of the shaving or planing ives, guide rolls &c.

My improvements consist, iirst, in the arrangement by which I am enabled to point the shingle and plane. or shave both sides at the same time, this effect beingproduced by planing knives set in plane stocks moving vertically, the operation of which will be hereinafter explained. I have also made an improvement by which the machine will cut or joint the edges of any width of shingle, the shingle itself serving to regulate the position of the jointing knives.

A A A in the several figures, represents the framework of the machine, which can be constructed as shown in the drawings or in any other suitable manner. On the top of the machine is the traversing slide B B, with the splitting knife C att-ached to it, and` on which slide the block to be split is placed. The slide B B is made to pass forward and .back under the stationary plat* form D D by the following arrangement of mechanical devices. The pinion E on the driving shaft F engages with the large gear wheel G placed on the shaft H. The crank or arm I on this shaftis attached to theouter edge of the wheel. G by a short axle which passes through one end of the long connecting rod K K, the other end of said rod beingattached to the bottom of the slide B B, as shown by dottedlines in Fig. 2, Plate l,

so that when the wheel G revolves it causes thefslide with its splitting knife to pass forward and back. The block to be split is placed upon the slide with one end against t-he edge of the knife 0. This knife is attached to the slide by thin springs or strips of steel which allow it to fall nearly lat upon the slide when it passes under the platform D D, while it is againraised by` passing over theshort inclined planes or grooves LL in the guide rails M, M. When the slide passes back the knife() will split a piece from the block, said block being held firm by abutting against the end of the plat'- form D D, and the split will fall upon the bed piece O O with the block behind it.

ing blocks or plane stocks P, P which hold the shaving or pointing knives Q Q, shaped as shown in Fig. 6 Plate 2. Motion is imparted to these plane stocks, by which they are made to open and shut, by means of the eccent-rics or cams R R, on the shaft H, one of which is connected to the upper and the other to the lower plane stock, by the arms S, S. The eccentrics are so placed that when the split first enters between the plane stocks, said stocks are open to their greatest extent, but as the split passes through, they gradually close, and the knives havingthe direction shown in Fig. 6, will shave or plane the shingle to a point. After the shingle has thus been poinfted, it passes through to the knives T, T, set in the boxes U, U to have its edges cut oif. These boxes are made to traverse forward and backon the cross bar V V, as follows- The roll W has motion imparted to it, by means of the gears J, J andthe wheel J on the shaft H. On the side of the roll W are the bent arms or cams X, X, which bear against and press apart the arms Y, Y one end of each of which is attached to a cross bar of the machine, and the other end plays between two pins on the bot-tom of the boxes U, U, which are thus forced apart. These boxes are made to approach each other again, by the bent springs Z, Z pressing against the arms Y, Y. The cams X, X are so placed that the knife boxes will be approaching each other, (being forced together by the springs Z, Z) just as the` shingle passes from the planing knives, so that the cams a, a, Figs.

4 and 5, Plate 2, turning on a pivot on the side of the boxes U, U will strike against `consequently the knife, firmly while the edges of the shingle are being cut, the shingle itself serving as a gage to set the position of the knife. When the shingle is thus finished the oalns X, X bear against the arms Y, Y the ends of which, playing between the pins on'the bottom of the boxes U, U strike against the curved ends of the pawls o, c which are thus disengaged from the rack, allowing the boxes U, U to be forced apart from each other as before, when they again return and are again set to cut the next shingle.

Having thus described my improvements in shingle machines, I shall state my claims as follows.

What I claim as my invention and desire to have secured to me by Letters Patent is,

The arrangement of the horizontal sliding boxes whichcarry the jointing knives, by which they will out the edges of any width of shingle, the shingle itself operating the devices for holding the boxes firmly and in the proper position while the shingle is being cut, as herein above set forth.

WILLIAM STODDARD.

Witnesses BENJ. C. PIPER, EZRA LINCOLN.

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