US1566407A - Paddle-making machine - Google Patents

Description

Dec. 22, 1925- 1,566,407

J, R. KELBRICK PADDLE MAKING MACHINE Filed Oct. 18, 1922 s Sheets-Sheet 1 \IQNVENTOR JOH R Keusmcn Ar-rvs.

J. R. KELBRICK PADDLE MAKING MACHINE 3 Sheets-Sheet 2.

Filed Oct. 18, 1922 ELBRIGK 5 ATT'Y INVENTIOR JOHN. .K DY.

J. R. KELBRICK PADDLE MAKING MACHINE Dec. 22 1925'- Filed 0ct 18, 1922 I5 SheetsSheet 5 mvsw-ron JoHNR L RI By: llrrv Patented Dec. 22, 1925.

."UNiTED STATES 1,566,407 PATENT OFFIC JOHN ROBERT KELIBRICK, F PETERBOROUGH, ONTARIO, CANADA.

PADDLE-MAKING MACHINE Application filed October 18, 1922. Serial No. 595,353.

vented certain new and useful Improve.

. ments in Faddle-Making Machines, of which ure 4.

the following is the specification.

My invention relates to improvements in paddle making machines and the object of. the invention is to devlse a machlne in wh1cheach side of the paddle blade and handle.

- ortion can be made in one operation, the paddle being passed through the machine twice for forming the complete paddle.

A further object is to devise a positive means for holding the paddle blank in position as it is passed through the machine and a still. further object of the invention is to devise a combined blade and handle por tion'cutter in Which complementary knives are secured to independent shafts, which in addition to being rotated, are capable of inward and outward movement for bringing the paddle blade or handle'po rtion'.

Another object is to devise means for lowering and raising the cutter shafts voitically so as to position the knives correctly for cutting portion of the paddle, as the case may be. My invention consists of a paddle making machine constructed and arranged all as hereinafter more particularly describedand illustrated in the accompanying drawing in which:

Fig. 1' represents a side elevation of a machine. Fig. 2 is a reduced vertical cross sectional View through the line 22 Figure 1.

" Fig. 3 is a reduced plan view.

"Fig. 4: is an'end elevation of the cutter,

showing the mounting of the knives thereon, and Fig. 5 is a vertical longitudinal section therethrough taken on the line 5-5 Fig- Like characters of reference indicate corresponding parts in the different views.

1 is the frame of the machine, provided with the longitudinally extending horizon: tally'spaced apart rails 2. 3 is a paddle carrying table slidably mounted on the rails 2 and having secured thereunder the toothed rack 4 which meshes with the gear 5, which a subject of the King of Great.

in the county of Peterborough, in

the handle portion or theblade frame.

is in turn secured to the laterally extending shaft 6 mounted in suitable bearings 7 on the main frame 1.

8 is the main shaft adapted to be driven by any suitable means'and provided with is rotatably supported in the bearings, 13,

said counter-shaft having secured thereto the pinion 1 1 which meshes with the gear 5.

15 and 16 are opposed grips having their --inner faces shaped substantially the shape of the paddle handle, said gripping fpiec'es being hinged to the table 5 by the pins 17. 18 is a spring secured to the free ends of the grips 15 and 16, and 19 is ajlever pivotally connected to one grip 15 intermediately ofits length and its inner end pivotally connected to the link 20 which is in turn ,pivotally' connected to the other grip 16.

21'is an upwardly extending stop having the tooth 22, said stop being adjustably secured in an indented portion 23 on the table 3 at the opposite end to the grips 15 and 16. the knives into the required position to out shafts 31 journalled in the slides 29 and said opposed rollers 30 being joined bvthe neck 32. Two pairs of rollers are provided, one pair being positioned on each side of the cutter.

33 is a subsidiary frame slldably mounted V in a vertical direction on the main frame 1 above the table 3, said frame extending transversely thereof. In mounting the subsidiary frame 33 on the main frame I provide outwardly extending ribs 3d on such mainframe adapted to be inserted into corresponding grooves 35 in the abutting face of the subsidiary frame 33, such grooves and ribs constituting slides for the subsidiary 36 are bolts extending outwardly from the main frame through vertical slots '37 in the subsidiary frame and the ends being provided with nuts 38 for holding the subsidiary frame in position against the main frame, although permitting it to slide relatively thereto in the verticaldirection.

39 and 40 are independent horizontal shafts, each journalled in bearings 41 on the subsidiary frame, the adjacent ends of the shafts 39 and 40 being positioned in proxiinity to each other at substantially the centre of the machine. The shafts 39 and 40 are provided at their inner ends with the triangular spiders 42 and respectively, such spiders being opposedly positioned on such shafts, as is illustrated in Fi 'ure 5 of the drawings.

44 and are knives suitably secured re spectively to the spiders 42 and 43 by the bolts 46, said knives being offset from the centre of the spider but each ying substantially parallel to one side thereof. It is to be understood that three knives are provided on each spider, such knives being set at substantially an angle of twenty degrees to each other and the knives 44 on the spider 42 interposed between the knives 45 on the spider 43, and each knife slidably connected to the opposed spider to that to which it s secured, by the bolts 45. This is achieved 1n each instance by the sides of the spiders being provided with dove-tailed grooves 4. into which are inserted dove-tailed pro1ections 48 on the opposed spider, the knives being secured to such dove-tailed tongues by means of the screws 49. Each knife is provided with a cutting edge 50 inclined towards the spider from its outer end to a recessed cutting portion 51 situated intermediately of the length of the knife, said recess being substantially the arc of a circle. The adjacent ends of the spiders 42 and 43 have cut-away portions 143 and 1 4 respectively, adapted to receive the reduced threaded on .s and 5?; of the shafts 39 and 40, said threaded ends being provided with the nuts 5-1- and for securing the plates 58 and 57 in engagement respectively with "ulders and 59 in such cut-away port' thus holding the spiders against inwa i displacement on such shafts. Keys 69 and G1 are provided between the shafts and the spider 42 and between the shaft and the spider 43 for preventing the rotation of the spideis on such shafts.

62 and 63 are collars rotatalfly mounted on the outer ends of the shafts 39 and 40 and provided with the pins 64 and 65 respectively. 6G and 67 are opposed levers suitably fulcrumed on the opposed brackets 68 and 69 on the main frame and the upper ends of the levers 66 and 67 being provided with forks 70 and 71 straddling the collars 2 and 63, and each side of the forks of such levers having respectively the slots 72 and 3 adapted to receive the pins 84 and 65 respectively. 74 and 75 are arms extending outwardly from the opposite levers 66 and (37 and provided with suitable weights 76 and 73' at their outer ends. The lower ends of the levers 66 and 67 are provided respectively with inwardly extending slides 78 and 7-9 with rollers 80 and 81 which engage corresponding cam faces 82 and 83 on opposite sides of the gear wheel 5, said slides being slidably mounted on the main frame 1.

The slide 78 is provided with the cam block 84 extending upwardly therefrom and the slide 1' 9 is provided with an opposed cam block 85 similar to the cam block 84, said blocks engaging respectively the rollers 86 and 87 journalled on the depending brackets 88 and 89 on the subsidiary frame 33. 90 and 91 are flanged pulleys secured to the shafts 39 and 40 and connected by the belts 92 and 93 with the pulleys 9 on the main shaft 8.

The operation of my machine is as fol lows:

The paddle blank 24 is placed on the table 3 and is secured thereto by inserting the tooth 22 into the blade end thereof and inserting the handle end between the opposed grips 15 and 16 which has been spread apart as is illustrated in dotted lines in Figure 3. hen such handle is in the required position the lever 19 is swung over into the position shown in full lines in Figure 3, drawin the free ends of the grips together and they are held in position by means of the spring 2 The main shaft 8 now rotates and through the medium of the driving connections described above, the gear wheel 5 is rotated in an anticlock-wise direction which will move the rack 4. and table 3 in the direction indicated by the arrow indicated in Figures 1 and 3, thus causing the paddle blank to travel under the cutter with the handle portion firs As the handle portion of the paddle blank 24 engages the cutter, the knives of which are rotating in an anticlock-wise direction through the medium of the belt drives from the shafts 39 and 40 to the main shaft 8, such handle portion will be cut by the respective sets of knives 44 and on one side, such sets of knives being then in the position illustrated in Figure 3 wherein the shafts 39 and 40 and the spiders 42 and 43 with the sets of knives 44 and 45 thereon, are slid into their outermost position through the medium of the levers 66 and 67, the slides 78 and 79 engagthe cam faces of the cams 82 and '83. The knives are shown in the blade cutting position in Figure 2 of the drawings and as he blade portion is reached, therollers 80 and 81 travel up their respective cam faces, thus permitting the outward movement of the slides 78 and 79 and the lower ends of the levers 66 and 67 with the coresponding inward movement of the upper ends of such levers and the consequent inward movement of the shafts 39 and 40, thus moving the spiders 42 and 43 with the sets of knives 44 and 45 thereon to. their innermost position shaped when each set of knives register one with another and the blade portion is cut.

During this drawing out of the respective portions of the cutter and the actuation of the slides 78 and? 9 to achieve this result, the cam blocks 84: and 85 on such slides move inwardly and permit the rollers 86 and 87 respectively to slide down the inclined faces of such cam blocks wherein the subsidiary frame 3 will be lowered, and-with it the cutter, when it is in the position illustrated in plan in Figure 3, that is, cutting the handle portion.

The opposedly positioned conical pairs of rollers 30 hold the paddle blank in position on the table during the feeding operation and when the handle portion is fed through the cutters to reduce the neck '82, rollers thereon hold the handle portion down on the table as well as the blade portion.

When the table 3 reaches the end of its run by operating the lever 19 into the position shown in Figure 3, the handle portion is released and the paddle, which is now correctly on one side is removed and the table restored to its initial position when either another paddle blank is placed in the machine or the particular paddle blank which has been finished on one side is turned over with the finished side down on the table and secured in this position thereto, so that when it is run through the machine again, the remaining side of the blade and handle portion is finished, thus completing the entire shaping of both the blade and handle portion in two operations. All that is now necessary is to put the paddle on a sanding machine or to sandpaper it to the desired finish, by hand.

From the above description it will be seen that I have devised a simple and effective paddle making machine which will form the paddle into the desired shape from a blank in two operations and thus do away with the necessity of having to shape the paddles by hand, as is now' the case, which in volves a very lengthy and laborious process. In making a paddle on a machine constructed according to my invention it will be seen that there are only four operations necessary to make the paddle from the blank. T he first which forms no part of the present invention is the shaping of the blank on a band-saw to substantially the profile of the paddle, then running the paddle through my machine as above described, and then finishing it by sandpapering.

Although I have described my device as being particularly applicable to the manufacture of paddles, it is to be understood that it could with equal facility, by changing the shape of the knives, be used to manufacture oars.

\Vhat I claim as my invention is 1. In a paddle making machine, the combination with the main frame, of a subsidiary cutter shaft carrying frame vertically slidable on the main frame, a pair of shafts independently journalled end to end on the subsidiary frame, a pair of opposedly positioned levers fulcrumed on the main frame, inwardly extending slides connected to their lower ends, their upper ends being pivotally connected to the shafts, means coacting with the inner ends of the slides for intermittently forcing them outwardly in unison, and means on the slides coacting with the subsidiary frame for lowering and raising the latter upon the slides being moved inwardly and outwardly.

2. In a paddle making machine, the combination with the main frame, of a subsidiary cutter shaft carrying frame vertically slidable on the'main frame, a pair of shafts independently journalled end to end on the subsidiary frame, a pair of opposedly positioned levers fulcrumed on the main frame, inwardly extending slides connected to their lower ends, their upper ends being pivotally connected to the shafts, means coacting with the inner ends of theslides for intermittently forcing them outwardly in unison, opposed cam blocks on the slides and rollers on the subsidiary frame engaging said cam blocks.

JOHN ROBERT KELBRICK.

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