US71714A - Benjamin day ot - Google Patents

Description

V@attriti Tieten @anni @ffice OF ORRNGTON', MAINE. A Leiters Patent No, 71,714, dated December 3, 1867- IMIROVI- lMElhl'I IN SHINGLE-M'AGHINBS..

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TO ALL WIIOM IT MY CONCERN:

Be it known that I, BENJAMIN DAY, of Bangor, in the county of Penobscot, and Stateof Maine, have invented a new and useful or improved Machine for Shaving Shingles; and I do hereby declare that the following is a fll, clear, and exact description of the construction and operationof the same, reference being had to the accompanying drawings, making a part of this specification, in which- -Figure 1 is a front perspective view,

Figure Z'is a back perspective view, and

Figure 3 is a vertical section taken on the line X Y,

Similar letters of reference indicate the same parts in the several ligures.

The nature of my invention consists in a shingle-shaving machine, light, and portable, 'adapted to various lengths and widths of shingles, the manual labor of operating which consists in feeding the rough splits to the machine, when they are automatically dressed upon one side, and, by a simple ohangein the position of the farming-board, thermachine is ready to complete the process by shaving the other side, producing an article superior to hand-work, and at a much less cost.

To enable others skilled in the art to make and' use my invention, I will proceed to describe its construction and operation. v

In the drawings, A A represent the frame, which consists of four pillars, secured in foot pieces, and by bars at the top, all secured firmly together. B is a metallic frame, {itted with grooves at its edges, and to slide upund down upon guides secured to the two front pillars of frame A. Upon the back side of frame B is secured an endless ruck, C, into which meshes the pinion a, which is attached to crankshaft b. This shaft, at its back end, is secured in bearings d, while the front end is supported in the pendulum-bar D, a part of which is l broken away in tig; 2. The connecting-rod between the machine and the motive-power is`attaehed to crank b,

g. 3, thus imparting a rotary motion to pinion a, which, being held in position by the parting-gnidef in rack C, imparts to sliding frame B a uniform rising and `descendinglnuovememt. Upon the back en d of shaft b is another crank, g, to which is connected the rod h, which is connected with the edger-blade E, which latter is connected to the stationary bar G by two rods, it; vThus the motion of crank g, through the agency of rod h and the rods t' t', imparts to blade E, throughout its length, a. uniform rising and falling motion, by which the edges of the shingles placed upon bed F are cut straight and true.

The edging-device, as also the'method shown and described for imparting motion tothe sliding frame, are shown only as auxiliary to the invention claimed, and as being but one of the many well-known methods of accomplishing the same results.

H is the forming-board, which is pivoted at its lower end inthe sliding frame B, as shown at j, iig. 3, whileA the upper end is adjusted in the following manner: The set-screws k k, g. 2, which pass through the sliding frame, are adjusted so that when the upper end of the forming-board I-I bears against them,l the machine will be in order to shave the irst side of the shingle; when, to adjust it for shaving the other side, the top of the forming-board is m'oved forward enough to admit the keys ZZ between the sliding frame and the forming-board. The set-screws m m`,which pass through a flange upon the upper end of the sliding frame, serve to hold the forming-board in the position in which it may be placed. n is a projecting metallic plate, extending across and secured to the forming-board. o is another metallic plate, having a projecting flange at its lower edge. This plate slides up anddown upon plate 1L, and is secured against it by two pins, P P, secured in plate o, and which slide in slots e c in plate "11. lwo levered.dogs, s s, are pivoted to plate o, as shown. These dogs, by the weight ofitheir levers, when the forming-board is run up, catch under two studs, t t, upon plate n, which are wider apart'than the pivots of the dogs, so that any upward pressure upon plate o cannot release the dogs from the studs; but when, by the descent ofthe forming-board, the dogs are brought in contact, by their levers, with pins u u, in frame A, the dogs are released, und the plateA o rests upon the pins u u until again taken up by the ascent of the forming-board, when the dogsagain catch un'der the studs as before. I is a roller, which is pressed against the forming-board by the springs J J, in thc ends of which it revolves, in eyes, as shown. K is the knifey'whieh is firmly secured to the front pillars of the frame'innd is adjusted by set-scrcws relatively to the forming-board. L is a hinged shield, partly breken away to show the knife, which is secureil to the pillars, and is drawn upwards against roller I by the elastic vloop v. M is a narrow apron, pivet'ed in brackets w w, and its lower edge is held closely to the face of the forming-board by an elastic loop, a. Upon the lower edge of this apron is secured a serrated metallic plate, as shown. The forming-board II, as will be seen, is slightly concave in thelne of its length, for the purpose hereinafter stated.,

The use and operation of thismachine are as follows: The splits A', which it is intended to shave, are ,rived, by splitting from 'boltssawn from the log, of the right length. These splits have a truc straight line across the end where the riving-tool enters the bolt, but' the rest of the sides of .the splits is rough and uneven, according as the grain or laminations ofthe wood may be more or less irregular. This true end is of the right thickness for the thick end of the shingle. When the machine is put in Imotion, the operator, standing in front, when the sliding frame reaches its full ascent, places one of the splits vA against theV forming-boardll, with the true end resting upon roller I, when, as the sliding-framedescends, the projection n comes in contact with the top of the split, forcing it downward between the forming-board and the roller, which, by the action of springs J J, yields to the pressure ofthe split, which latter colnes in contact with knife K, and is shaved true and smooth upon one side, when, after passing below the knife,'i,t: drops from the machine, and the sliding frame again rises, when the operation isv repeated. After the desired quantity have been -thus passed through and i shaved upon one side,`the set-screws m m are slackened, the forming-board is swung forward at the top, the keys Z Zarc inserted between the forming-board and sliding frame, the set-screws m m are again tightened, when the machine is ready to shave the other or last side of the splits. Should the splits be winding-which results from the spiral direction of the fibres of the wood-them when the end of the split rst passes between the roller and the forming-board, one of the upper corners of the split would bc thrown out from the projection n, leaving insuiiicient bearing to drive the shingle past the blade. To obviate this, the auxiliary movable projection o is provided, which, during the descent of a large part of the length of the shingle, serves as a bearing to the most winding split, and when the shinglel has descended so far that the part above the roller is forced back under the shoulder n, then the projection o is arrested by pins u, as before described. v

The forming-board is made concave, as described and shown, in order that the shingle may have an equal convexity, for the reason that when laid upon the roofs of buildings, about one-third of their length is exposed, and this exposed portion should be of nearly uniform thickness, while the upper end terminates ina wedgeN point, and by giving the forming-board the proper eoncavity the shingle may be thus formed.

'lhe hinged shelf L serves, as shown in fig. 3, to prevent the shaving b from ceiling around the roller I, as it otherwise would, thereby obstructing the working of the machine; and the hinged plate M, with its ser rated edge, prevents the shingles from boing, by their adhesion to the forming-board,.c`arried up, after passing .the blade. The teeth of the metallic plate, catching upon the shingle', hold it until the forming-boardrises clear of the shingle, when it falls by its own weight. Beneath plate n is a slight projection or shoulder ofwood, as shown, which, when the sliding frame has made its full descent, comes in contact with the edge of knife K, thus obviating dulling the blade, while at the same time it forces the shingle past the edge.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is'- 1. The sliding frame B, adjustable' forming-board H, knife K, and self-adjusting roller I, all constructed and arrangedto operate in the manner and for `the purpose substantially as described 'and shown. I

2. The auxiliary bearing 0, constructed and arranged to move with the forming-board a part of its descent, and to resume its position and office upon the ascent ofV the forming-board, substantially in manner lts and for lthe purposes specified.

3. In combination with knife K and roller I, the hinged shield L, substantially as described and shown.

BENJAMIN DAY.

Witnesses:

H. L. MITCHELL, JAMES C. WESTON.

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