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Description: |
| The patent specification and drawing are lost.From 1835-02-14 Mechanics' Magazine."The Committee on Science and the Arts, constituted by the Franklin Institute of the State of Pennsylvania, for the promotion of the Mechanic Arts, to whom was referred for examination, Goodspeed & Wiswell's patent 'Circular, Vertical, and Angular Sawing and Boring Machine,' Report:—"That the machine under consideration is a species of saw-mill, in which, instead of placing the saw or saws upon cross heads, between two bars or rods acting as stretchers, there is a single support for the cross heads in the middle of the moveable frame, and the saws are placed near the extremities of the cross heads, by which arrangement, the saws are left free to operate on planks or boards of any required length or breadth; the central or main support of the saws is sustained by flanges in its upright position, and other convenient flanches receive the cross heads above mentioned."To use the saws above described for cutting circular segments out of plank, either at right angles to its face, as in the case of the rims of carriage wheels, or at any obliquity, as in that of chair backs, the inventors have employed a quadrant, capable of being adjusted to any required radius, and of lying either horizontal or inclined, according as the rectangular or the oblique section is to be made in the plank. This quadrant is, by means of several separate centres, capable of producing circles of a great variety of radii."By means of a graduated index and a circular saw, another part of the machine is made to perform the operation of angular sawing, so as to cut from the ends of the felloes of carriage wheels, the requisite sections, in order that they may precisely complete a circle, when the required number is brought into the due position. This graduated index, like the quadrant before mentioned, is adapted to different radii, and to different numbers of felloes to a wheel. The hubs of wheels are bored by another part of the same machine, in which there is a sliding support for the hub, which, for this purpose, is made to rest on an arbor supported by journals, and is then sent forward to be presented to the auger, moving always through the same distance for the same hub, and, of course, boring every hole of the same depth. The auger is placed in supports, which rise and fall at pleasure, in order to 'enable the operator to bore at any distance from the table or plane he chooses.'"The inventors particularly claim the application of the method of hanging the vertical saws, and the mode of raising and depressing the augers."The committee have witnessed the performance of a machine of the usual size, and of the above description, and can testify to the celerity and precision with which the constituent parts of a wheel-rim are taken from the plank, the ends cut off, the holes bored for the tenons, and the whole thus made ready for being driven upon the spokes. An advantage of no small moment results from the use of this machine, in the saving of material—it being customary, in many establishments, to cut up into chips all those parts of the plank, which the curved form of the felloes does not allow the axe and adze to separate in a more convenient or useful shape."The committee cannot doubt that wheelwrights, chairmakers, and others, who have occasion for the operations of circular or angular sawing, would find this machine an important auxiliary in their respective trades. By order of the Committee. WILLIAM HAMILTON, Actuary. Aug. 14th, 1834."1833 NYC Directory lists Benjamin F. Goodspeed as a machinist. We could not find any lists 1833-1836 for a D. Wiswell or Wiswall. |
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