US2998040A - Power feeds for edge planers - Google Patents

Description

Aug 29, 1961 R. G. PATTERSON 2,998,040

POWER FEEDS FOR EDGE PLANERS Filed May l, 1959 2 Sheets-Sheet 1 H* ii l INVENTOR. R. G. PATTERSON ATTORLNEYS.

Aug. 29, 1961 R. G. PATTERSON 2,998,040

POWER FEEDS FOR EDGE PLANERS Filed May 1, 1959 2 Sheets-Sheet 2 ATTORNEYS.

United States Patent O 2,998,040 POWER FEEDS FOR EDGE PLANERS Robert Glenn Patterson, 32 Chicago St., Planleld, Ill. Filed May 1,1959, Ser. No. 810,373 3 Claims. (Cl. 1'44-247) This yinvention embodies improvements on the Edge Planer patented by me on March 5, 1957 under No. 2,783,796.

In the aforesaid patent la pair of rollers were in pressing engagement with the edge of the board being planed, in order to keep the board steady during its movement through the planer. This movement was accomplished by hand, `andl have lfound that this method of feeding the board is often unsatisfactory. Thus, the hand feed may be uneven, causing the cut -to vary in depth or tex ture; or, the feed may be too fast at times, causing roughness in the surface of the work. Also, the patented structure employed a backing guide or fence for the work which required the loosening of securing bolts every time the depth of theguide .had to be adjusted, and the tightening of the bolts when a new setting of the guide was determined, these operations requiring effort and skill to make sure that the guide was parallel to the path of the work.

One object of the present invention is to impart an additional function to the pressing rollers by making them power operated.

A further object is to connect the work guide for movement in forward or rearward direction by power means, with a hand control yadded for operating the guide when only a short movement thereof is required.

Another object is -to include power-transmission controls for operating convenience and safety.

A A betterunderstanding of the improvements may be gained by reference to the accompanying drawings, in VVifllCil` Y ,1`1'IG. y1 is atop plan view .ofthe planer, similar to FIG. 2 in the aforesaid patent;

FIG. 2 is a duplication of parts shown in the right-hand lower portion of FIG. 1 after the table of the planer has been removed;

FIG. 3 is a front elevation of a mechanism seen from the line 3 3 of FIG. 1

FIG. 4 is a side elevation of .the work guide feed as seen from the -line 4 4 of FIG. 3;

FIG. 5 is an enlarged duplication of a roller drive seen in the left hand portion of FIG. l;

FIG. 6 is an enlarged section of the roller drive, taken on the line 6 6 of FIG. 1;

FIG. 7 is a rear view of a work guide control; taken on the section line 7 7 of FIG. 4;

FIG. 8 is a side view of the said control enlarged from the showing in the right-hand portion of FIG. 4;

FIG. 9 (Sheet l) is an enlarged section on the line 9 9 of FIG. 1; and

FIG. 10 is a section on the line 10-10 of FIG. 9.

rIhe basic construction of the planer follows that of the one in my patent. Thus, specic reference to the accompanying drawings indicates the table of the planer at 10, and a fragment of its supporting structure at 11. 'Ihe motor for operating the cutter 18 is shown at 16, and the blades of the cutter are shown at 19.

The board to be planed is shown at 21, as in the patent, and the backing guide lor fence 25 -for the same is part of an angle rail 26 which is slidable between front and rear over the table 10.

The assemblies of the rollers designed for pressing engagement with the edge of the board 21 are positioned similarly to those in the patent, but their specific nature has been changed. Thus, these rollers are supported by arms 65 and 66, each arm having a hub 68 (FIG. 6)

2,998,040 PatentedA Aug. 29, 1961 ICC at its outer end and ra pendent web 69. 'Ihe hub is pivoted on Ia vertical sleeve 71 driven tightly into a boss 72 depending from the table 10; and the sleeve carries roller bearings 74 for a vertical shaft 74a which carries a top sprocket 75 at its upper end and a bottom sprocket 76 at its lower end.

The inner end of each arm65 and 66 carries a bearing 80 on which ya cap-shaped roller 81 is rotatable. The roller is carried by an upright shaft 82 which is journaled in the bearing 80 and is headed -at 82a to support the roller. The shaft lis reduced `at 82b above the arm 65 for the keyed mounting of a sprocket 84 which is connected to the sprocket 75 by |achain 85. 'Ihe 4roller 81 carried by the arm 65 has a rubber jacket 86. However, the roller 81 carried by the arm 66 is fitted with a plurality of radial pins 88 near the bottom, these projecting in the form of barbs 89, las seen in FIGS. 9v and 10.

Means similar to those in the aforesaid patent are provided for urging the rollers 81 against the Work. Such means comprise the plates 50 (FIG. 1), secured to the table by screws 51 and forming `bearings for screws 53 directed through the Webs 69 of the arms 65 and 66. Each screw 53 has a head 56 on the outer side of the arm and a washer 56m on the inner side thereof; and the compression spring 60 is coiled around the screw between the plate 50 and the web 69, the screw being made fast to the plate by a lock nut 53a. Although the amount of swing of the arms 65 and 66 is quite short, as noticed in FIG. l, it is preferable to widen the holes in the Webs 69 through which the screws 53 p-ass as indicated at 70 in FIG. 6 to avoid binding of the screws as the arms swing.

It is evident from FIG. 1 that `the board Z1 is fed from right to left in order to receivey the cut indicated in its frontedge. The machine imparts joint rotation to the shafts 74a in counter-clockwise ldirection as seen in FIG. 1, so vthat the roller 81 with the barbs 89 imparts a positive feed to the rough edge of the board 21, while the roller 81 with the rubber jacket 86 continues the `feed after the edge has been cut with ya finished surface.

The source for operating the work-feeding roller 81 is' la motor 95 (FIGURE 2) mounted beneath the ltable and connected to a speed reducer 96. 'Ihe output shaft 103 of the latter is vertical, and receives a drive sprocket 105. A loop-shaped chain 106 transmits motion from the sprocket to the roller sprocket 76 with the aid of idler `sprockets 108 suitably journaled beneath the table 10 As indicated in FIGS. 7 and 8, the Work guide or fence 25 has tapped bearings 110 near each end for la pair df feed screws 1112. These pass in shaft form 112z (FIG- URES 1 and 4) through journals 114 at the front end of the machine to be connected for joint rotation by a frontal shaft through the agency of bevel gears 116. Brackets 117 fro-m the table 10 carry the journals 114 and journals 118 for the frontal shaft, las seen in FIG. 1,

The shaft 115 carries Ka handwheel `119 at one end which is operated in case the work Iguide 25 is to be given a short movement. However, in case the work guide is to be moved a considerable distance, ra power feed for the frontal shaft 115 is provided. FIG. 2 shows a belt takeolf from ya variable speed pulley 126 td a driving pulley 127 on a jack shaft 128 below the table. The pulley 127 is movable by means of a hand lever 130 and frame 131 to engage a clutch component 132 on the jack shaft 128 with Ia clutch component 133 on a cofmpanion jack shaft 135. A pulley 136 on the latter transmits a belt drive 138 to a pulley 139 on the frontal shaft 115. The power drive for the work guide can thus be engaged by the shifting of the hand lever 130. The jack shafts 128 and 135 are carried by frontal frame journals 140. The pulley 126 receives motion from a companion 3 variable speed pulley 142 pulley 142 is operated by a motor 144, these units being suitably secured in the frame of the planer.

, As in the patented structure, "a device is provided -for locking the Work guident )any point in its adjustment. Thus, FIGS. 7 and 8 show that the base l26 of the work guide 25 carries journals 14S near its ends lfor a long shaft 147. The latter carries eccentrics 148, one of them receiving a hand'lever 150 headed by a fball 15,1; and the eccentrics Iare pinned through the shaft as shown at 149. They ride on wear pads 153 secured on the work guide base 12,6 by screws 154. The journals. 145 depend in the form of vertical slides 145e, which operate in the screw bearings 110 and receive bottom blocks 156 on their inner sides secured Vby screwsV 157. The Iblolcks are positioned just below side flanges 160 depending from the table 10. When the hand lever-,is in the vertical position, the eccentrics are low atthe bottom and maintain the slide blocks 156 clear of the table flanges 160, so that the work guide is free to be moved'forth and back. However, when the hand lever is swung ldown to the position shown in FIG. V8 .after a desired placement of the Work guide has been made, the eccentrics are high 'at the bottom and raise the blocks 156 into engagement with the table anges 160. The work guide is now locked against movement.

vIt will now be apparent that the improvements described above .add power feed means for the wo'rk and the work guide. The progress ofthe Work is thus rendered uniform and the edge cut evengfand the powereed for the workguide saves time when the work guide is to be moved toa considerable extent. While theseimprovements make for greater etliciency in the operation and handling of the planer, they are quite simple in construction and should serve over a long period without appreciable attention or repair.

Iclaim:

l. AIn anv edge planer having a table, the combination withV a substantially vertical guide backing the work, and asubstantially vertical-.axised cutter `above the table and applied Yto thefront of theY work; of a roller applied to the front of work 'at theV feeding sideV of the cutter for engaging the work with the guide and feeding the Work by way of ya belt 143; yand the t 4 toward the cutter, 'a second roller applied to the front odi the work at the side departing from the cuttertfor engaging the work with the guide, pressure means directed to the rollers from the iront, sprockets carried by the rollers, drive sprockets located outwardly from the rollers, chain drives connecting Vthe drive sprockets' withV the' roller sprockets, and power drive means for said drive sprockets,- said rollers and sprockets being located above the table, and said drive means being located fbeneath the same.

2. The structure of claim l, said power drive means compri-sing shafts for the drive sprockets with lower end portions beneath the table, bottom sprockets carried by said lower end portions, -a power unit, and a looped chain' operated by theY latter and trained along the outer sides ofthe bottom sprockets.

3. The structure of claim l, said power drive means' comprising shafts for the drive sprockets with lower end portions beneath the table, bottom sprockets carried byv said lower end portions, -a power unit, la looped chain' operatedY yby the latter and trained along the outer sides" of the bottom sprockets, xand front `and rear idler sprockets" appliedV to corresponding runs of the looped chain at' points intermediate the bottom sprockets.

"References Cited in the" le of this patent Y UNITED STATES PATENTS 266,517 Remus Oct. 24, 1882 690,456 Ording Jan. 7, 1902 940,016 Hick Nov. 16, 1909 1,174,777 Tomlinson Mar. 7, 1916 1,540,703 Nelson Iune'Z, 1925l 2,397,490 Kenney Apr. 2, 1946 2,615,483 King Oct. 28, 1952 2,783,796' Patterson Mar. 5, 1957 2,829,683 Skinner et al Apr. 8, 1958 Y FOREIGN PATENTS 65,115 Norway Aug. 3, 1942 90,820 Sweden Nov. 16, 1937 y 371,489v Germany Mar. 16, 1923 Great Britain Mar. 2.4, 1936-

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