US387925A - shimeb - Google Patents

Description

3 SheetS--Sheet 1.

( Model.)

S. J. SHIMER.

GUTTER HEAD.

Patented Aug. 14, 1888.

San/WW, l e wiuez K752237222 3 01, atfozum z/ 'thogmphur. Washington, 0.1;

3.811eets-Sheet 2.

' (ModeL) S. J. SHIMER.

CUTTER HEAD.

No. 387,925. Patented Aug. 14, 1888.

Nmtrsasl Phm-Limgwhen Wubingtm 04 c.

3 Sheets-Sheet 3.

( Model.)

S. J. SHIMER.

GUTTER HEAD. No. 387,925. Patented Aug. 14,1888.

x c zmuez M6 2.

H. PEYERQ PhnIo-Lilhugriphm. wnnin nn'. h. c.

' ljwi'rnn hirnrrns Fn'rnnir @rrrcn.

SAMUEL- J. SIIIMER, OF MILTON, PENNSYLVANIA, ASSIGNOR TO SAMUEL J. SHIMER & SQNS, OF SAME PLACE.

CUTTER-H EAD.

E5PTBCIFICATION forming part of Letters Patent No. 387,925, dated August 14,1888.

Application filed February 21, 1888. Serial No. 264,775. (Model) T (LZZ whom it may concern:

Be it known that I, SAMUEL J. SIIIMER, a citizen of the United States of America, residing at Milton, in the. county of Xorthumberland and State of Pennsylvania, have invented a new and useful Gutter-Head, of which the following is a specification.

My invention has relation to improvements in cutter-heads used in surface-planing and 1o molding or heading machines; and the objects are, first, to improve the means for adjusting and regulating the planer-knives on the cutter-head, and, second, to combine in improved operative aggroupment a header-knife with 5 the clamping-plate and the planer-knife.

In my Letters Patent, dated November 30, 1886, and numbered 353,509,1'01" improvement for bit-holders for cutter-heads, the knives are adjusted by means of a clamping-plate having angular slots, the knife being advanced and retracted by the action of screws engaging with both ends of the knives. In my present invention I propose to utilize an adjustingplate having parallel angular slots to take the studs on the knife and move the plate and the knife with it by means of a single adjustingscrew. I also combine, in an improved manner, a beadenknife with the planerknife and clamping-plate.

Myiuvention therefore consists in the novel construct-ion of parts and their combination, as willhe hereinafter fully describcd,andspeciall y as the same shall be pointed out in the claims, as required by the statute.

I have fully illustrated my invention in the accompanying drawings, wherein- Figure 1 is a perspective view of the cutterhead complete with all its mountings. Fig. 2 is a view in elevation of the cutter-head with 0 theknives and clampingplatesremoved. Fi

3 is an end view showing the shape of the slots in which the clampingbolts are seated. Fig. BL is a perspective of the clamping-plate with the bcadenknife fitted thereto. Fig. 5 is a similar view with the header-knife removed. Fig. 6 is a transverse section of the same, taken on the line :0 :0 of Fig. 4 and extended through the planer-knife and adj listing-plate. Fig. 7 is a view of the clampingplate of the headerknife. Fig. 8 is a bottom view of the clamping-plate with the adjusting plate and knife removed. Fi 9 is a view of the planer'hnife. Fig. 10 is a View of the beadorhnife. Fig. 11 is a view of the adjusting plate and screw. Fig. 12 is a view of the adjusting-plate in modified form. Fig. 18 is a view of the clamping-plate laid over the neck of the adjustingscrew. Fig. 14 shows one of the clampingbolts which holds the knife-plate on the cutter-head. Fig. 15 is a view of the clamp and screw to hold the bcadenknife in position. Fig. 16 is aview taken on the line i ofFig. 4-, to show the means for clamping the header-knife in connection with the knife-clamping plate. Fig. 17 is the knife clamping plate with the adjusting-plate in its bed.

Reference being had to the drawings, wherein like parts appearing in the different figures are designated by the same notations of reference, A designates the cutter-head, formed with four plane sides, 1, and parallel end faces, and having on the knife-edges of each side a projecting flange, 2, which lies under the cuttiug-edge of the knives and serves as a support to the forward portion of the same. In the face of the sides are formed countersinlcs or holes 3, to take the retaining-studs on the clamping-plates of the cutter-head.

In each face of the cutter-head are formed T-shaped slots 4, arranged, preferably, in ad vance of the axis of the cutter-head, and in the cutter-head is the usual central aperture, 5, to take the shaft or spindle, which revolves the head. In the T-shaped slots of the head are arranged clamping-bolts 6, having necks and flanges to fit in the slots and provided with threaded ends, to which are fitted nuts '5.

B designates the plates which clamp the knives to the head, and within which are located the adjusting plates and knives. In the clampingplates are bolt holes 8, through which the clamping-bolts 6 are projected, and through the end is a elainpingscrew, 9, the head of which is shaped to iit the T-shaped slots in the cutter-head, and serves to hold the plate which lies under the clamping-plate and over the neck of the :nljustingscrew by means of the nut 10 on its threaded end.

On the outer face of the clamping-plates B is a seat, 11, which is preferably of steel or iron, and is secured to the clamping-plate by rivets projected through the united parts, sub

stantially as shown in the drawings; or it may be cast solid as part of the holding -.plate. The seat 11 in contour is shaped by two interseeting segments of circles, as shownin the drawings; but any other superficial shape may be adopted which will provide the requisite recession or incline from the highest point to atford a suitable foundation for theknife or bit. In the seat 11 and extending across the chipchuck of the clamping -plate is a circular knife-bed, 12, having on one side an overhanging flange, 13, and on the other side a flaring edge, 14. The direction of the flanges 13 14 is arranged on inclines laterally to throw the header-bits to the right and left alternately to produce clearance-space between them and the sides of the cutin making the beads or tongues on the stock. Through the seat 11 and clamping-plate is a threaded bolt-hole, 15, to take the threaded end of the screw which holds the header-bit clamp in position. The back edge of the clamping-plate is made with a chipchuck, 16, which affords room between the projecting flange of the head of the clampingplate to receive the chips and prevent the knives from becoming clogged.

The small bits 17, constituting the beading or molding knives, are formed of segments of an annulus, the curves of which conform to the face of the seat on the clamping-plate and to the circle to be traversed by them. The bits 17 are made with a cuttingface adapted to cut a shape predetermined, and they are arranged and secured to the cutter-head with one flange resting under the overhanging flange of the seat and the other flange under the edge of the clamp which holds them in place. Thus they are set at inclines difl'ering laterally in alternate sequence to produce a clearancespace between them and the walls of the cut in the operation of cutting the grooves, forms, or beads.

The small bits or header-knives are set to their proper cutting'eircle by means of any proper gage adapted to setthem at a uniform projection, thus keeping the extreme swing of the cut uniform. The bits have no lateral adjustment, but are fixed in their seats in this respect by the clamp and screw-bolt, as shown and hereinafter described, and traverse the same line of cut, producing in their arrangement the requisite depth and width of the out. Any slight difference occasioned by wear in the cutting-circle of the small bits and surface-knives may be remedied by adjusting the surfaceknives by means of the adj ustingscrews. Unsuccessful efforts have heretofore been made to make thisbead-cut with straight cutters arranged parallel and without clearauce-eut, the reason or causes of the failure being that the lateral wear spoiled the cutters after one adjustment, and because such cutters have to be filed on the back or outer circle, thus continually reducing the diameter of the circle traver'sed and rendering adjustment, to be frequently made, an operation in such case tedious and too costly for practical use.

In the construction shown and described of my improved circular sectional headers the filing is accomplished on their inner face and the line of cut recedes very slowly, and the clearance given the bits prevents lateral wear. The adjustment,when necessary, can be made without any remodeling of the bits, as is required under the old method of arrangement.

The small bit-clamp 18 (shown in Figs. 7 and 15 of the drawings) consists of a segment of an annulus adapted to fit the seat in the knifebed, and has the outer surface inclined or struck down, as at a, and has inclined flanges 19 20, to rest, respectively, over the flange on the'bit and against the flaring-edge flange of the bit-plate, as shown in Fig. 4. A clamping-screw is projected through the plate of the clamp into the bit-bed, as shown. On the bottom of the clamping-plate B are studs 21, which set in the holes 3 in the faces of the cutter-head. In the forward part of the bottom face of the clamping-plates B is a rectangular seat, 22, in which the adj ustingplate is seated. At the one end, as at 23, this seat 22 is deepened to provide room for the movement of the adj ustingscrew, and a groove, 0, may be extended from the end of the part 23, to take the end of the screw. In the end of the clampingplate is formed a bearing, 24, in which the neck of the adj nstingserew is arranged, and over the neck of the screw is arranged a retaining-plate, 25, which is provided with a. bearing, (1, to set over the neck of the adjusting-screw. This plate is held in place by the small clampingscrew 10, and on the inner edge is grooved to receive the edge of the surface-knife, as seen at e. The adjusting-screw 26 has its shank th readcd, and is formed with a neck, 27, which turns in the bearings 24, and thus holds the screw from progression or recession. On the threaded shank or stem of the screw is fitted a nut, 28, which fits in a nutseat, 29, in the adjustingplate 30. Instead of the nut 28 and seat 29, the end of the adj listing-plate may be struck down, as shown in Fig. 12 of the drawings, and the screw work in a threaded aperture in the struck-down part. The adj ustingplate 30 is of the form shown in the drawings, and fits the seat made for it, being given a limited movement lengthwiseiin both directions. In the adj usting-plates are formed parallel diagonally-arranged slots 31, which engage with the studs on the bottom of the planer-knives, and as the plate is moved by the adjustable screw the knife is correspondingly-moved, forward or backward, to a greater or less projecting cutting'edge. The planerknife 32 consists of a flat piece of steel, having beveled ends 33,to set in the grooves in the clamping-plate at the end of the main knife-clamps and in the inner edge of the shoulder f on the plate, and is provided with studs 34, to engage in the diagonally-arranged slots of the adj usting-plate.

In my invention, as disclosed in Letters Patent No. 353,509, the diagonal slots or grooves are formed in the clamping-plate, and the ad- ICC justment is made by means of screws letin the opposite ends of the holding-plate, with their ends against the ends of the knife. This requires both screws to be turned-that is, one to be loosened and the other tightenedbefore the knife can be adjusted. In my present invention I accomplish the adjustment by a single screw and an adjusting-plate having diagonal slots.

The operation of the device is as follows: The adj ustingplate is laid in its bed with the neck of the adjustingserew in its bearing, and the shank with the nut in the aperture of the plate. The knife is then placed in the rabbct ofthe clamping plate over the adj ustingplate, and with its studs in the diagonal slots there of, and then the end clampingpiece is laid over the end of the plate and neck of the screw. The clamping-plate is then arranged in place and clamped fast. The adjustment may be made at any time by loosening the clamping-bolts and turning the adjustingscrew to thrust the knife forward or to draw it back. The seat for the small bit being arranged to take them in a fixed position, as de scribed, they may be arranged therein, and, being projected to the proper point, the clamp is made fast and the bits are ready for use.

.Vhat I claim is- 1. The combination, with a planer or cutter-hend stock, of a holdingplate removably secured to the said stock and formed with an adjusting-plate seat, and adapted to receive a knife under the adjusting-plate, an adjustingplate, shorter than the holding plate and knife, formed with parallel diagonal slots, an adj usting-scrcw let in the end of the holding plate and engaging with the adjusting-plate, and a knife formed with studs to engage the diagonal slots of the adjusting-plate, substantially as described, and for the purpose stated.

2. The combination, with a planer or cut ter-hcad stock, of a holdingplate removably secured to the said stock and formed with a seat to take an adjustiugplate, and a knife between the adjusting-plate and the face of the stock, an adjusting-plate, shorter than the knife, arranged to slide lengthwise in the platescat of the holding-plate, an adjust-ingscrew held in a bearingin the end of theholdingplate against retraction and progression, and with its threaded stem engaging a threaded receptacle in the adjusting-plate, and a knife on the adjusting-plate formed with studs to engage the diagonal slots of the adjustingplate, substantially as described.

3. The combination, with a cutter-head stock formed with countersinks 3, a holding-plate having studs to set in the countersinks of the head, and having a seat to receive a knife-adjusting plate, and a knife having studs, of an adjustingplate arranged over the knife and formed with diagonal slots l o engage the studs of the knife, anadjusting-screw to reciprocate the adjustingplate, a plate to hold the screw in its bearing. and a. clampingscrew to clamp the end of the holding-plate, the plate over the neck of the screw, and the end of the knife, substantially as described.

4. The combination, with a cutter -head stock, its surlacecutting knife, and the holding-plate, of abeader-bit mounted on the eX- terior of the lmlding-plate, substantially as described.

5. The combination, with a. cutter head stock, the knife, and the holding-plate, of a llOfLllOldill} scat rigidly secured to the exterior of he holding-plate and formed with a bitbedhaving a, curved surface and inclined edge flanges, a sectional annular header bit arranged. on a bit-bod, and a clampingpicce to hold the beater-bit in the bed in inclined position, sul'isiautially as described.

6. The coinhinatiou,with the holdingplates and the surfaceplauing knives of a cutterhead, of two or more sectional annular bits mounted on the hack of the holding-plate and arranged to incline lengthwise in alternation to provide clearance-space, substantially as described.

7. .[n a cutterhoad, the combination, with the holding-plates of the surface-luiivcs, of a bcadcr-bit scat, ll, of hard metal, seen red to the exterior of the holding-plate,and formed with akuilescat, a clamping-plate, 19, and a bolt, 24 l0 hold the clamp on a bit in the scat, substantially as described.

in witness whereof I have hereunto set my hand in the presence of two attesting witnesses.

SAMUEL J. SHlME-R.

A tlest: 4

43110. S. Summit. Jenn A. iinck.

Images