US1810029A - Setworks - Google Patents

Description

' June 16, 1931-. e. M. PELTON 1,810,029

SETWORKS Original Filed July 2. 1928 s Sheets-Sheet 2 Junel6, 1931. amp-ELTON 1,810,029;

- SETWORKS Original Filed July 2, 1928 3 'ShetS-Sheef 3 mew? Patented June 16, 1931 NHTED STATES Parana GEORGE M. PELTON, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO THE FILER & STOWELL COMPANY, OF 'MILW AUKEE,WI SGONSIN, A CORPORATION" OFF-WISCONSIN Original application filed Ju1y'2, 1928,

The present applicationis a division of my copending application for setworks filed July 2, 1928, Serial'No. 289,881.

One of the principal objects of the present invention is to provide a setworks of this character in which the setting head has or ganized therewith indicating means under the full, direct and plain view of the operator or setter wherebythe distance of each knee face fromthe sawline and the distance-which the knees are advanced duringeach setting movement are plainly and accurately indicated at all times. j Another important object of the, invention resides in the provision of a setting head of setting.

this character which is of simple and compact construction, smooth, easy and accurate in operation, readily and conveniently controlled and easy and comparatively inexpensive to manufacture.

A further object of the invention is to provide for the effective cushioning of the impact of the head and to coord nate this cushionlng action 'with the prevention of rebound and all this without interfering with easy and accurate Other objects and advantages reside in certain novel features of the construction, arrangement and combination of parts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had tothe accompanying drawings, forming a part of this specification, and in which: I

Figure 1 is a plan view ofthe setting head embodying the present invention Figure 2 is a fragmentary view thereof in side elevation;

Figure 3 is a View in central vertical longitudinal section taken through the setting clash blocks or stops of the setting in position. In bearings 92,

Serial No. 289,881. Divided and this application filed February 5,

1930. Serial No. 425,933.

sake of illustration;

Figure 4 1s a view in horizontal section taken on line 4-4 of Flgure 3;

Figure 5'is a fragmentary detail view partly in vertical section taken on line- 5-5 of Figure 1, but showing the locking pawl in elevation;

vFlgure 6 1s, a fragmentary detall View showing the latching means for the locking,

pawl, parts being broken away and shown in section for the sake of illustration;

Figure 7 is a fragmentary View partly in section and partly in elevation showing the relatively fixed clash block and its spring pressed latching pin;

Figure 8 is a View in horizontal section taken on line. 88 of Figure 7 and illustrating the shock absorber'or cushioning means embodied in the relatively. fixed clash block;

Figure 9'is a detail View in section taken on line 99 of Figure 7 and further illustrating the latching pin and its beveled seat or keeper;

Figure 10 isa fragmentary view in transverse horizontal section taken on line 10-10 of Figure 2, and also showing the locking pawl insection; and V Figure 11 is a view similar to Figure 10 but showing another position of. the. parts.

Referring to the drawings, it will be seen that the present invention proposes a setting headdesignated at S and including a column 90- having its base suitably secured column 90, a column shaft 93 is provided (see Figure 3) andis geared to a set shaft 1 by means of a beveledpinion 94; fixed to the lower end of the column shaft 93 and meshing with a beveled gear wheel 95 fixed to rotate with the set shaft 1. The shaft 93 projects above the upper end ofthe column and has a main setting drum or ratchet drum 97 keyed thereto and rotatable therewith. A bifurcated clash arm 98 is provided and has bearings 99 mounted for free rotation about the axis of the shaft 93. One of the bearings 99 is rotatably mounted onthe extension of the hub of the ratchet drum 9?. Both hearings 99 are sectional to permit of assembly and disasprovided in the a head, parts being shown in elevation for the sembly. At their outer ends the arms 98 have integrally formed therewith an adjustable clash block 100 which, at the end of the setting movement, strikes a relatively fixed clash block 101 mounted on a vertical shaft 102 carried by a lateral extension 103 of the column (see Figures 1 to 3). The adjustable clash block and the bearing arms 98 on which it is formed may be swung around the ratchet drum 97 and engaged therewith at any selected point depending u on the thickness of the boards to be cut.

is movement of the adjustable clash block 100 is facilitated by virtue of the provision of a handle 104 which also controls a shiftable pawl 105 fitted in an opening (see Figure 3) provided therefor in the adjustable clash block 100 and operated from the handle 104 by means of a crank arm 106 fixed to the pivot axis 107 to which the handle 104 is also secured. The crank arm 106 is pivotally connected as at 108 to the pawl block 105. A parallel crank arm 109 is pivoted as at 110 to the clash block 100 and is also pivoted as at 111 to the lower end of the pawl 105. Thus, when the handle 104 is rocked about its pivot 107 it moves the pawl 105 toward or away from the ratchet drum 97. The pawl 105 has teeth designed to interfit with the teeth of the ratchet drum to lock the clash block thereto at any point around the ratchet drum.

To facilitate setting of the clash arm 98 and clash block 100, especially when cutting a number of boards of the same thickness, an adjustable abutment designated generally at 112 is provided for the clash block 100 and is integrally formed with and extends from a rotatable index plate 113.

As shown in Figure 3, the index plate 113 is rotatably mounted on thebody and hub extension of a fixed ratchet plate 114 having a central bearing loosely receiving a reduced extension 115 formed at the upper end of the vertical shaft 93. The ratchet plate 114 has an integral lateral mounting arm 116 (see Figures 1 and 2) which is formed adjacent its outer end with an opening fitted over and secured to the mounting shaft 102. A nut 119 is provided for holding the arm 116 on its shaft 102 and consequently on the shaft 93.

In a slot or guide way formed in the ad justable abutment 112, a sliding pawl or detent 121 is fitted and is urged toward and into engagement with the ratchet plate 114 by means of a compression coil spring 122 having one end abutting the detent 121 and having its other end abutting a plug or abutment 123 threadedly connected with and closing the outer end of the guideway which receives the detent 121. The positioning of the adjustable abutment and consequently of the index plate 113 and the manipulation of the sliding detent 121 is facilitated by means of a fixed handle 125 fastened as at 126 to the adj ustable abutment and having a pivoted handle 127 cooperable therewith. The plvoted handle 127 is pivotally mounted as at 128 on the adjustable abutment and extends through a conically shaped cam slot 129 formed in the sliding detent 121. l Vhen the handles 125 and 127 are grasped and pulled together the detent 121 is retracted and disengaged from the ratchet plate 114 and with the handles so held they may be shifted angularly to properly position the adjustable abutment. The p0- sitioning of the adjustable abutment is readily and accurately gauged by virtue of the provision of a scale 130 on the index plate 113, a pointer 131 fixed to the upper end of the hub extension 120 of the fixed ratchet plate by screws 131 coacting with the scale of the index plate. The scale on the index plate 113 consists of scale markings and numerals and indicates in inches and fractions of inches the thicknesses of the boards which may be cut. If the adjustable abutment is so set that the pointer registers with the one inch marking then by successively bringing the clash arm into engagement with the abutment in between each advance of the knees tl e knees will be advanced a sufficient amount during each setting operation to cut boards of one inch thickness. After the clash block 100 of the clash arm 98 is engaged with the adjustable abutment 112 and locked to the main ratchet drum at such point by its pawl 105, the operator throws in the power drive which imparts advancing or setting movement to the set shaft. This also rotates the shaft 93 and the ratchet drum 97 and swings the clash arm 98 and its clash block 100 around until it strikes the fixed abutment or fixed clash block 101., This positively stops 'the advancing movement of the set shaft.

The setter carefully watches this action and throws out the power drive upon engagement of the clash blocks but if the setter is a little late no damage will result due to the slippage permitted by the drive under such circumstances as will be understood from the disclosure of my application referred to above.

In order to cushion the impact occurring when the clash block 100 strikes the relatively fixed clash block 101, cushioning means is organized with these clash blocks and the relatively fixed clash block 101 has a slight lateral swinging movement on the shaft 102.

Referring now to Figures 5, 6 and 7 it will be seen that the clash block 101 has a hearing portion 201 in which the shaft 102 is fitted. The body of the clash block 101 is formed with a cylinder 202 in which a piston 203 has a working fit. The piston 203 is prevented from moving out through the outer end of the cylinder 202 by means of an apertured end plate 204 threaded into a countersunk outer end of the cylinder. A projection or pin 205 is integral with the piston and projects exteriorly of the'face of theclash I movement.

block 101, this pin slidingthrough a central opening provided therefor in the end plate 204 and in the facing 206 of the clash block. The facing 206 is secured in position by countersunk screws 206 and both it and the plate 204 have venting openings 207 and 208, respectively. Thev piston 203 is urged toward the outer end of its cylinder 202 (in which position its pin 205 projects beyond the face of the clash block) by means of a compression coil spring 209 having one end abutting the inner end Wall of the cylinder 202 and having its other end abutting the piston 203. The spring 209 is mounted on a guide rod 210 fixed in the inner end of a cylinder and sliding in an axial guide opening 212 formed in the pin or projection 205. When the piston 203 is positioned at the outer end of its cylinder 202 it partially uncovers an escape port 213 which communicates with an' escape groove 214 provided in the inner face of the cylinder 202 and gradually decreasing in cross sectional area rearwardly of the cylinder; The outer end of the projection 205 is rounded off as at 205 and is designed to engage a similarly formed seat or recess .215 provided in the clash block 100 (see Figure 2). This recess or seat 215 may have its face hardened or may be constituted of a hard steel insert secured in the face of the clash block 100. The bearing portion 201 has a rearward extension or tail 216 formed with a vertical guide opening 217 receiving a compression coil spring 218 and a latching pin 219, the spring 218 projecting the pin 219 down through, the'lower end of the opening 217 and into engagement'with a seat 220 formed on the lateral extension 103 of the column (compare Figures 7 and 9). The lower end of the latching pin 219 is beveled as at 219 and the seat 220 is similarly formed.

The latching pin 219, by virtue of its engagement with the seat 220 releasably holds the clash block 101 slightly angled with re spect to its final stopping position and this positions the projection 205 of the cushioning means to engage the seat 215 of the clash block 100 when this clash block 100 swings toward the clash block 101 during a setting Vhen the projection 205 engages the seat 215 the piston 203 is displaced inwardly against the action of the spring 209 and against the resistance which the air in the cylinder 202 presents to the rearward movement of the piston 203 at this time. This resistance graduallyincreases as the escape of the air from the cylinder 202 becomes more and more restricted due to the covering of the port 213 and to the gradual covering of the groove 214. Just before the face of the clash block 100 strikes the facing 206 of the clash block 101 the piston 203 has completely covered the groove 214: and so the air confined between the piston 203 and the inner Figure 11.

wall of the cylinder 202 is compressed as it seat 215 is disengaged from the projection .205 and the spring 209 moves the piston to the outer end of the cylinder to project the pin 205 to the full extent. At the same time the clash block 101 is freed and the spring 218 acts through the pin 219 and its seat 220 to throw the clash block 101 back to its normal angled position.

' F or the purpose of preventing rebound of the ratchet drum, means provided which automatically engages the ratchet drum 97 to hold it against retrograde movement when the clash blocks 100 and 101 are engaged. As shown in Figures 5, 10 and 11, this means for preventing retrograde movement of tie main ratchet drum and consequently of the set shaft and knees consists of a pawl designated generally at 132 and having a shaft or axis 132 pivotally supported at its ends in the arm 116 and in the lateral extension of the column. The shaft 132 is formed with a lateral extension or seat 132 to which a reversible double tooth 132 is secured by screws and nuts 132. Only one prong ofthe double tooth 132 is used at a time but when one prong becomes worn the teeth may be re-. versed to bring the other prong into play.

The active prong of the double tooth 132 engageable with the teeth of the ratchet drum 97 as shown in Figure 10, and these parts are so shaped and so arranged that the pawl 132 when engaged with the drum 97 tends to lOCK the latter positively against retrograde movement but when the drum 97 is moved for setting it automatically kicks out the pawl 132. The tooth 132 has substantially the same extent as the ratchet drum 97 but its shaft 132 is considerably longer, shown in On this shaft 132, below the tooth 132, a trip or control collar-133 is keyed or otherwise suitably fixed and has inte 'rall formed therewith an a. ertured lu f3 '3 133 and a tubular extension 133". The lug 183 carries a beveled latch head 1342: (see Figure 6), the head 13 1 having its shank 1341; extending through the aperture of the lug and fastened in position by a nut 134:. The latching head 13 1- is designed to snap to one side or the other of a sliding latching bolt 135 correspondingly beveled and mounted in a tubular bracket 135" bolted to the lateral extension 103 of the column. A spring 135' Y projects the sliding latch 185 and maintains it in engagement with the latch head 184. This latching arrangement made up of the latching head 18st and the sliding latch 185 operates to releasably hold the pawl 182 ongaged with or disengaged from the ratchet drum 97.

Means is provided for automatically shif ing the pawl 182 to cause it to engage the ratchet drum 97 when the clash lock 100 and 101 engage and this means includes a yieldable trip 186 slidably mounted in the tubular extension 188 of the collar 188. The trip 186 has a. reduced extension or shank 186 which is slidably fitted in the tubular extension 188 and which has nuts 186 threaded on its rearward end engageable with the rearward end of the tubular extension 188* to limit the extent to which the head of the trip is projected forwardly f the tubular extension 188 under the influence of a compression coil spring 186 which encircles the shank or stem 186 of the trip and abuts the head of the trip at one end and a shoulder on the tubular extension 188 at its other end. When the pawl 182 is disengaged from the ratchet drum 97 the head of the trip 186 lies in the path of a trip pin or lug 187 integral with or rigidly connected to the movable clash block 100 (compare Figures 1 and This trip pin or lug 187 is located on the lower portion of the clash block 100 and passes freely beneath the clash block 101 to engage the head 186 of the trip 186 and swing the trip 186, tubular extension 188 and shaft 182 of the locking pawl as a unit thereby moving the active prong of the tooth 182 from the position shown in Figure 10 to the position shown in Figure 11, wherein it intermeshes or interlits with the teeth of the ratchet drum 97. This occurs just at the time the clash blocks engage and if there is any tendency to rebound it is positively prevented. From a consideration of Figure 11 it will be apparent that if the setting head and its ratchet drum 97 tend to rebound the ratchet drum will tend to move in a counterclockwise direction, as viewed in Figure 11, which tends to swing the pawl 182 more firm- I ly into engagement with the ratchet drum and consequently prevents any rebound. W hen the ratchet drum partakes of a setting movement it moves in a clockwise direction as viewed in Figure 11, and consequently its setting motion tends to and does throw the pawl 182 out of engagement therewith.

For the purpose of automatically disengaging the pawl 182 from the ratchet drum 97 when the control lever of the power drive is swung to a position to cause recedng movement, a. release lever 188 is ful- (rumed on a brack t 188 bolted to the extension 108 of the column and is connected by a link 140 with a lug 189 provided on the collar 188. The release lever 188 is located in the path of movement of the lever 60 and when the lever 60 pushed in the direction to cause the power drive to effect receding movement of the set shaft and knees this lever 60 engages the release lever 188 and automatically kicks out the pawl 182.

It is to be noted that when the operator disengages the clash blocks in order to effect a setting movement the swinging movement of the clash block 100 may occur only by swinging over the clash block 101 due to the interfitting of the extremity of the projection 205 and of the seat or recess 215. In this way, and due to the action of the latching pin 219 and its seat 220 previously described, the clash block 101 is repositioned automatically when the clash block 100 is manipulated for gauging a setting operation.

The setting head also includes means for indicating the distance of the knee face from the sawline, and, as shown in Figures 1, 8 and 4, this means comprises a horizontally disposed annular indicator plate 145 secured to the flange 1 16 of an internal gear 1&7, the internal gear 147 having a hub 1&8 rotatably fitted on the shaft 98. The exterior of this hub 1&8 provides the mounting for the upper bearing arm 99 of the adjustable clash block 100. A driving eccentric 150 is machined on the shaft 98 and lies in the same plane as the internal gear 1&7. On this eccentric the hub of an intermediate gear wheel 151 is fitted, the gear wheel 151 having a number of its teeth always meshing with the teeth of the internal gear 147. To secure the desired speed reduction the gear Wheel 151 usually has a slightly less number of teeth than the internal gear 147. Means is provided for constraining the gear 151 to move bodily without rotating. In other words, the gear 151 is held against rotation about its own axis but is constrained to partake of such bodily movement as will permit it to roll around the internal gear 147. This means consists of three eccentrics 152, each eccentric including a pin 158 rotatably fitted in a bearing provided therefor in the fixed ratchet plate 11& and an offset or eccentric 15 1 rotatably fitted in a bearing provided therefor in the gear Wheel 151. The eccentrics 152 are spaced at equal angular intervals about the gear Wheel 151 and they have the same throw as the eccentric 150. With this organization during the rotation of the shaft 98 its eccentric also rotates and due to the action of this eccentric 150 and to the action of the eccentrics 152 the gear wheel 151 is moved bodily in such manner as to roll around the internal gear 147 and thus impart to the gear 1417 a greatly reduced rate of rotation from that of the shaft 98. This properly gears down the motion of the ser shaft and moves the index or indicator 1&5 therefrom in such manner and degree that it indicates to the setter the distance of the knee from the sawline. As shown in Figure 6, the indicator or index plate 145 has scale markings and numerals designating inches and fractions thereof and these scale markings and numerals coact with a fixed indicator arm 160 secured to the mounting arm 116 of the fixed ratchet plate. With this mechanism the setting operations are greatly facilitated. The adjustable abutment 112 is first properly positioned by grasping the levers 127 and 125 to release the detent 121 and to adjust the index plate 113 until the proper scale marking thereon registers with the pointer 131. The handle 127 is then released whereby the adjustable abutment 112 is held in adjusted position. N ow,

as long as boards of the same thickness are to be cut the operator need not disturb the adjustment 112 and need only swing the clash arm 98 around to a position where it engages the adjustable abutment between each setting movement. Of course, when swinging the clash arm 98 to engage the adjustable abutment, pawl 105 is released from the ratchet drum 97, but when the clash block 100 and the adjustable abutment 122 are engaged the setter latches the clash arm to the ratchet drum 97 by manipulating the handle 1041 to engage the pawl block 105 with the ratchet drum. Then, by appropriately swinging the control lever 60, the power drive is set into operation to advance the knees until the clash blocks 100 and 101 engage in the manner previously described. Receding movement is effected by merely reversely moving the control lever 60, and disengaging the pawl block 105 from the ratchet drum 97. At any time a change in the thickness of the board being cut may be effected by appropriately adjusting the adjustable abutment 112. The indicating or gauging means which facilitates the proper position of the adjustable abutment is in the full view of the setter and is easily read. This same advantage is also had in connection with the indicating means for displaying the distance of the knee face from the sawline.

g It is to be understood that a suitable power drive is provided for the set shaft which is controlled by the lever 60. As this power drive per se forms no part of the present invention, it has not been described or shown in detail. For one example of a power drive that is suitable for use with the present invention, reference is made to my copending application for setworks, filed July 2, 1928, Serial No. 289,881.

The invention claimed is:

1. A setworks comprising a column, a shaft rotatably mounted thereon and adapted to be driven from a set shaft, a rotatable ratchet drum fixed to the shaft, a setting arm mounted for rotation about the shaft and drum, a manually operable pawl carried by the setting arm and engageable with the ratchet, a clash block carried by the setting arm, a cooper-able fixed clash block mounted on the column, an adjustable abutment facilitating setting of-the setting arm,

an index plate disposed substantially in a horizontal plane and carrvin said abutment L 1 J b 7 a. fixed ratchet plate underlying the index plate, a latch carried by the adjustable abutment and engageable with the fixed ratchet plate to hold the adjustable abutment in said posit-ion, said index plate having a scale therein indicat ng the thickness of boards to move bodily, and a dial having an internal gear meshed with said gear wheel and driven thereby and" provided 'wlth lndicia for displaymg the distance of the knee face from the sawlme. 1

3. A setworks comprising a column, ashaft rotatably mounted therein and adaptedwto be driven from a set shaft, an eccentric fixed on said shaft adjacent its upper end, a single gear wheel fitted on and acuated by said eccentric, a plurality of eccentrics constrained to rotate about fixed axes and connected to said gear wheel for holdingasaid gear wheel against rotation about its own axis while permitting it to move bodily, and a dial having an internal gear meshed with said gear wheel and driven thereby and provided with indicia for displaying the distance of the knee face from the sawline.

4. A, setworks including the usual column and shaft rotatably mounted in the column, an indicator for displaying the distance of the knee face fromthe sawline, means for driving said indicator from said shaft and including an internal gear fixed to the indicator, an eccentric on said shaft, a single intermediategear fitted on said eccentric and meshed with said internal gear and means for holding said intermediate gear against rotation about its own axis while permitting it to roll bodily around said internal gear.

5. A setworks including a relatively fixed clash block mounted for limited swinging movement, means for releasably holding said clash block in either of its two positions, an adjustable clash block, one of said clash blocks having a cylinderlformed therein and being provided with a lateral vent to said cylinder and an internal tapering groove communicating with the vent, a piston fitted in said cylinder and uncovering the vent in. its

jecting the piston, a projection carried by the 1st0n and extending beyond the clash bloc when the piston is in its outer position, said other clash block having a recess coop- 5 erable with the projection of the piston.

6. In a setworks of the type having a column, a column shaft rotatable therein, a setting arm, an adjustable abutment facilitating setting of said arm, and a fixed ratchet plate to which the abutment is adjustably secured, indicating means comprising an index plate carrying said adjustable abutment and adjusted therewith and having indicia indicating the thicknesses of boards cut in any particular adjustment of the index plate,

a pointer carried by the fixed ratchet plate and coacting with the index plate, a second indicator of annular form surrounding the index plate and provided with indicia for displaying the distance of the knee face from the sawline and means for driving said annular indicator from the column shaft.

7. A setworks comprising a setting arm, an adjustable abutment facilitating setting of said arm, an index plate carrying said abutment and adjustable therewith, a fixed ratchet plate to which the abutment is adjustably secured, and a pointer carried by the ratchet plate and coacting with the index plate, said index plate having indicia cooperable with said pointer to indicate the thicknesses of boards cut in any particular adjust ment of the index plate and consequently also of the adjustable abutment. In witness whereof, I hereto affix my signature.

GEORGE M. PELTON.

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