US238290A - Machine for dressing wood - Google Patents

Description

Nr. JENKINS.V Y Machine for Dressing Wood, Stone,&o.

.Patented March-1 '188,1'

;WWNESSES n PETERS., FHOT0-L|TMOGRAPHER, WASHUIGTON. D. C,

UNITED STATES EETcE.

PATENT MACHINE FOR DRESSING WOOD, STONE, 86C.

SPECIFICATION forming part of Letters Patent No. 238,290, dated March 1, 1881. Application led January 11, 1879.

To alt whom tt may concern:

Beit known that I, NIcHoLAs JENKINS, of the city and county of New Haven, in the State of Connecticut, have invented certain new and useful Improvements Relating to Machineryfor Dressing or Shaping Wood, Stone, or other material 5 and I do hereby declare that the following is a full, clear, and eXact description thereof.

According' to this-invention I employ what I term a revolving variety table, adapted to aid in executing circular work. This table is also, by peculiar provisions for tilting or assuming an oblique position, adapted to allow a single cutter to produce a variety of effects by acting at different angles or with different degrees ot' inclination on the material.

The following is a description of what I con sider the best means of carrying out the invention.

The accompanying drawings form part ot' this specilication.

Figure l represents a side view, Fig. 2 a vertical section, and Fig. 3 a plan view, ci' apparatus constructed according to my invention; Fig. 4, a sectional view ot' part of Fig. 2, on a larger scale.

In each ofthe views similar letters of reference are employed to indicate corresponding parts wherever they occur.

This device is adapted for working withy a revolving cutter, the templet being guided by' a pin below. One peculiarity iu this mechanism is the capacity ofthe table for being tilted and adjusted to various inclinations. When the table is tilted the e'ect of the cutter on the material varies according as the material is applied on the lower or on the upper side. It is optional with the attendant to press the material up from the lower side of the inclined table, and cause the cutting to be done throughout on that side of the cutting-spindle, in which case the edge may be undercut if a suitable form of cutter be employed, or to press the material down from the upper side of the table, and to cause the cutter `to act against the material on that side only, as the material is continuously moved along in tracing the pattern indicated by the templet, which lies under the material, and is pressed aga-inst the pin which projects up from below, as represented. When the material is pressed against the pin, not from the lower side nor from the upper side, but in an intermediate direction, and is therefere presented to the cutter in a corresponding' intermediate position, the eutting will not bernoditied in the same manner, but the form of the molding or pattern of the edge which is produced will be varied by the fact that the plane of motion of the cutters does not coincide exactly with the plane of the templet and ot' the wood or other .material lying thereon. This Inode of handling the material is mainly intended for use with wood, but may be used with marble, slate, and material in general. I will describe it as wood.

The tilting table is marked Q. It is by preference of circular forni and supported by an under table, Q2, as shown, and is provided on its under side with a series of teeth, Q', which gear into and are capable ofbeing turned around by the small pinion Q4, having its bearings in the table Q2, and operated by a handcranl, Q5. The under table, Q2, tilts on centers q2, which are mounted in uprights `Qheld firmly on a plate, Q7, which may be fixed by a single bolt to the table A2.

The cutter is or may beheld stationary during the use of the device. Arms Qa extend downward from the under table, Q2, and are held by screw-bolts Q9 in any desired position in segmental slots Q10. The top table, Q, may be horizontal, or it may be inclined Within wide limits by changing the positions of the bolts Q9 in the slots Q10.

I have above described how this table may be used when the templet (notrepresented)and the material fixed therein are held on the table and moved about by hand. The mechanism may be used for holding the material rigidly on the table and moving it slowly by mechanism.

There are in the upper surface of the table Q four radial grooves, q, which may receive adjustable clampingpieces for holding the material onto the table. A piece of plank or other material to be wrought may be laid tlat on the table Q, and held lirmly by the four or other number'of clamps, and the tableQ being set level it may be moved by traversing the supporting-carriage A2, or by turning the crank Q5, and thus rotating the table Q. In

the latter case circles or parts of circles may be readily described, the radius of which will depend on how much the carriage A2 has been moved, so as to bring the center of the table Q out of the line of the cutter above. (Not represented.)

Various other vdevices may be cut by this machine thus mounted by moving the cutterspindle (not represented) to the right or the left and compounding that motion with the motion of the main supporting-table A2, and at the same time rotating the plate Q.

For many varieties of work in this manner it is necessary to remove the central guide-pin, Q, or to sink it out of the way. I provide for the latter by mounting the central pin, QU, in an adjustable screw, Q12. (See Figs. 2 and 4.) By turning the latter screw by means ot' its largehead or hand-wheel Q13 the pin Qlll maybe raised to any moderate elevation required, or it may be sunk lush with or below the upper surfaceof the table Q. A changeable collar,]?, may be applied to this central pin, as shown in Figs. 2 and 4. In the arrangement shown I employ a removable screw, Q, to hold the changeable collar P in position 5 but a spring ring or clip may be employed, if desired. Gonstructed as shown it is necessary to remove the screw Q15x and collar P when the central pin is to be sunk out of the way. Vhen this part of the apparatus is used in the manner first described, with the wood moved by hand on the surface of the table Q, controlled only by the contact of the templet against the ceiltral pin, Q, a skillful workman can produce varied effects by not presenting wood uniformly, either on the lower or-npper side of the pin, or in any intermediate position, but varying the side on which it is presented as the Work progresses, as above explained. Various spiral conditions of the edge can be thus produced. In cutting the wing of a bird, or a leaf of foliage, a proper templet being provided, and the material fixed thereon by points projecting upward from the templet or otherwise, the workman may commence by pressing the templet against the pin Ql1 on the upper side to produce one end of the wing or leaf, and gradually shifting it around, first into an intermediate position, and finally-to thelower side of the pin, in executing the other end of the leaf. The effect produced may make the foliage appear to stand out by being undercut at one end while it is not at the other. Other curves may be thus varied by skillful manipulation.

Modifications of this device may be made within wide limits by any competent workman, and I can vary the shape ot' the table Q, if desired, for producing any particular description of work.

I propose to employ the invention for dressing orshaping wood, stone, or other material capable of being treated by cutting.

I claim as my invention- 1. The tilting table Q, with suitable adjusting and confining means,in combination with a cutter and with guiding means, as herein specied.

2. The combination of the table Q with provisions for slowlyrevolving or partially revolving at will, and also with provisions for tilting or holding in various inclined positions, adapted for use with suitable cutting means, as herein specified.

3. The guide-pin Q11, with means for adjusting its rise, in combination with the table Q, adapted for use with suitable cutting means, as herein specified.

In testimony whereof I have hereunto set my hand this 22d day of June, 1878, in the presence of two subscribing witnesses.

NICHOLASv JENKINS.

W'itnesses W. GoLBoRNE BRooKEs, CnAs. C. Srnrson.

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