US1488534A - John h - Google Patents

Description

April 1 1924. I 1,488,534

A. E- FOLSOM ET 'AL mcp-INE FOR SHAPING WOODEN HEELS Filed July 22 1 .4 M 1 w v April 1 1924. 1,488,534

' A. E. FOLSOM ET AL MACHINE FOR SHAPING WOODEN HEELS Filed July 22 1920 5 Sheets-Sheet 2 April 1 1924. 1,438,534

A. E. FOLSOM ET AL MACHINE FOR SHAPING WOODEN HEELS iled July 22 1920' 5 Sheets-Sheet 5 April 1 1924.

A E FOLSOM ET AL MACHTNE FOR SHAPING WOODEN HEELS Filed July 22 [192 0 5 Sheets-Sheet 4 [avg/tam m April 1 1924.

A. E. FOLSOM ET AL MACHiNE FOR SHAPING WOODEN HEELS 5 Sheets$heet 5 Filed July 22 1920 Patented Apr. 2., 1924.,

illllTED STATES PATENT OFFICE.

UR E. IL GLSOLM, "WENCHENDON, EVLASSACHUFJE S, Zi'C HIl H. VINTON, F KEENE, HAIJLPST' Neil's, LED W' 1"". WMLTNIFY, 013 VTINCZ-IiuNDGN, MASSACHUSETTS,

E IG-IH'UES, BY 1 ENE flSSIGIRUl/ZEN llg, "30 U: $351931 'tCI-IINEBY CORPORA- IGIL, 9F PATEESUIE, llEill A CGEtPURiiC-JEUN OF NEX -T JERSEY.

MACHINE FQlFt HEELS.

Application. filed July 22, W20. Serial No. 398,183.

To all w from it may concern Be it known that we, ARTHUR Folsom, a citizen of the United States, resid' it inchendon, in the county of l lorcester and tate Ol' idassachusetts, doiin VINroN, citizen of the United titates, residing lieene, in the county of Cheshire and State of New liainpshire, and 1 V ILLIAM M. VJHIT- 7 Her, a citizen of the United States, residing 10 at 'i inchendon, in the county of ll orcester and State of l /lassachusetts, have invented new useful Improvements in Machines for Shaping i VOOdED Heels, of which the following is a specification.

This invention relates to machine for shaping wooden heels, the object of the invention being to provide a practical machine which will accurately and smoothly shape a heel from a bloclr of wood and which is so constructed that heels of different shapes and sizes may be shaped upon the same ma chine.

l-ieretofore machines for cutting wooden heels have always developed objectionable vibration of the trimming cutters. In the use of such machines under the present practice, a wooden h el blank is held in jack moved by the operator against a guide, and is operated upon by the periphery of ro tary cutter, so that even slight cutter vibration prom'ces an irregular surface on the heel. v etoiore such machines have been driven from factory shat 'ng by belt gearing which necessar ts a side pull on the cutter shafts tending to induce irregular cutter action. lltloreover, belt bearing is characteristically liable to develop uneven or whipping action due to irregulariti s produced by the belt lacing or otherwise, or beuse a belt other eason unbalanced. Then, 0, in riew 01 eavy duty iu1posed,such -.chine requires that the belting be unusu- .:lly tight to niain t" traction, and this results in rapid wear of t e our shalt and its bearin s, with the necessity oi l reque renewal of the shaftbushings. re son of th further tact such trimin nu cutters commonly run at very high such as 5000-500G revolutions per nute, the above referred to and other simi lar conditions very much aggravated,

5 wi h S o pulley is out of true, wabbles, or.

with the result that for one reason or another it is difiicult and often practically impossible to maintain the cutters free from harmful vibration and to produce satisfactory heel cutting even with the most painstaking skillful work on the part of an operator.

High as is the speed indicated, it has been found that a substantial increase in it would greatly improrethe quality of work produced it it could be obtained without further aggravating the conditions above noted. 'ihe beginning of the cut at the breast of a wooden heel is somewhat against the grain of the wood, and the heel is often injured by forcing it too rapidly into the cutter at this point. l fe have found that a cutter speed of 760% it. M. or thereabouts permits as rapid a feed as any operator can be expected to produce, without tearing out splinters near the breast. This speed, however, has not proved practically feasible for a belt driven cutter.

improper heel cutting results either in making the product unsalable, or requires expensive hand finishing to repair the damage as well as possible.

In view of the foregoing, it is an object of the present invention to provide a heel cutting machine, the operating mechanism. of which is so organized that it may be depended upon to operate practically without vibration, and which will be free from belt troubles and excessive wear and tear resultins; therefrom, and economical and reliable to maintain and operate in this and other respects.

In the attainment of this object, the present invention provides a novel or anization comprising, as herein illustrated, a rotating cutter having its periphery formed to trim the es oi wooden heel blanks, which cut ter is carried on a shaft driven by a high speed motor having its rotor mounted di rectly on the shaft concentrically therewith. in this construction, he cutter shaft constitutes the rotor shaft of the motor, and it is not only practicable to balance the moving parts of the machine with e are accuracy, but in the operation of the machine there is no force other than the pressure of the Work against the cutter tending to throw the rotating parts of the machine out of balance. Consequently, not only is undesirable cutter shaft vibration minimized, but t 1e wear on the bearings and shafts is so slight as to be negligible even over a long period, and at the same time, a speed of 7000 ll. P. M. or even higher can be readily maintained.

The novel block holder we have shown in this application is in itself an invention of John H. Vinton, one of the applicants in this case, for which he has applied for United States Letters Patent on Block holder for heel turning machines, filed March 27, 1920, Serial No. 369337, out this invention is not restricted to any particular form of block holder as the invention broadly resideszin a novel organization coinprising the combination of an electric motor including a spindle, cutter fast to said spindle and a holder for a wooden heel his I; which is adapted to be moved relatively to said cutter in order that it may be shaped to form a wooden heel. In the machine disclosed two cutter spindles are employed rotating in opposite directions, one of said spindles, when looking down upon the same, being rotated in a clockwise direction and the other in a counterclockwise direction.

The invention further consists in certain detailed constructions and combination of parts all as hereinafter fully set forth in the specification and particularly pointed out in the claims.

Referring to the drawings Figure 1 is a front elevation of our improved machine for shaping wooden heels.

Fig. 2 is a side elevation of the same viewed from the left of Figure 1.

Fig. 3 is a sectional elevation taken on the line 33, Figure 1.

Fig. 4 is a plan view of the machine.

Figs. 5 to 10 inclusive are diagrammatic plan views illustrating the dill'erent positions which are assumed by the block holder and its former relatively to the rotary cutters.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 15 is the frame of the machine. 16 is one of the motors and 1? the block holder. The motor 16 consists of the usual stator 18 and rotor 19, which is fastened to a vertical spindle 20 to the upper end of which is clamped apair of cutters 21 by means of collars E22 and 23 and a nut 94, which has screw-threaded engagement with the upper end of the spindle 20. The spindle 20 has two conical portions 25 and 26 which are rotatably mounted in bearings 27 and 28 respectively. These bearings are slidably mounted upon the frame 15 and are clamped in position on said frame by bolts 29 and 30. The bearings 27 and 28 are connected together by a vertical shaft 31 which is fastened at its upper end by a set screw 32 to a depending bracltet 33 on the bearing 27 and is fastened at its lower end by a set screw 34.- to an upwardly projecting bracket 35 on the bearing 28.

The motor is provided with a casing which encloses the stator and rotor and a portion of the spindle and this casing consists of an upper cap and a lower cap 37 which are both fastened to a supporting member 38 which projects rearwardly from the motor and has an ear 39 thereon which is fastened by set screws ll) and ll to the stationary verticul shaft 31.

it will thus be seen that the upper bearing 2?, the lower bearing and the motor 16 are all co ted together by the vertical shaft and .ncse parts may be adjusted vertically and slim taneously by means of a screw l2 which against the under side of the bearii'ig see Figs. 1 and 5, and has screw-threaded engagement with a portion of the frame. The lower hearing is-providcd with a bushing which may be adjusted vertically in the sealing by means of collars ed and ll), bushing is provided with an oil chamber do and has ate-shed to its lower end by screw-threaded engagement therewith a pedestal l? which is locked in position upon the bushing ll) by a set collar ill. The lower end the shaft rests upon a seat d9 which is loosely mounted upon the cap ll". The upper bearing 2? is also provided with oil chambers 50, it being very es sential that the bearings of the spindle should be thoroughly lubricated in view of the high speed rotation the same.

The machine of our invention is provided with two motors 16 and Si with two motor spindles 2G and resp ctively, the dill'erent bearings and the con ction throughout of those motors, their spindles and co-opcrating parts being substantially the same, the spindle 52 having a pair of cutters 53 fastened thereto corresponding to the cutters 21 on the spindle 20 with this exception that the spindle 20, looking down upon the same, rotates in a co unterclockwisc direction, while the spindle 52 rotates in a clockwise direction.

The reason for this being that the cutters on the spindle 20 shape one side of the heel and the cutters on the spindle shape the other side of the heel, it being necessary that the cutters should cut with the grain upon the opposite sides of the heel and this necessitates rotating the cutter spindles in oppo site directions.

Since the holder for the block of wood does not per se constitute a portion of this invention and as the same is fully described in detail in said application for Letters Patent by said Vinton, it is thought imnecessary to describe in detail said block holder as any suitable block holder may be employed in combination with a vertical electric motor spindle without departing from the spirit of this invention, but said holder consists mosaic-i mainly of a support 5% for the block the block being clamped in position upon said holder by a jaw 56 which is pivoted to a primary clamping lever 57, said primary clamping lever being actuated by rneans of a secondary clamping lever 58 to which motion is imparted by a lever 59 pivoted at 60 to th frame 61 of the block holder. The frame 61 is pivoted at to a holder 63 which is fastened to a vertical rock sh ft 64. Said reel: shaft is rotatably and slidably mounted in bearings 65 and 66 carried upon a swinging; bracket or carrier 67 said swinging bracket being mounted upon a vertical shaft '58 to which it is clamped by ears and 70 and clamp screws 71 and T2 respee tively. The ear 69 bears against the upper end or" a bearing 73 for the shaft 68 mounted on the frame 15 oi: the machine The lower end of the shaft 68 is also suitably supported in a hearing. The lower end of the shaft 6411218 an arm We IdSi; thereto upon which is rotatably mounted a roller 75 which is adapted in the operation or". the machine, to bear against the upper ed gz c of i 'll-shaped cam track 76. This cani track is oivoted at its ends 77 to a bracket 78 on the frame and is adjusted to raise or lower the same more or less by means of an adjusting screw 79 which has screw-threaded engagement with the bracket 78 and the upper end of which bears against the under side of said carn track '2' 6.

The care track 76 and the bracket 78 are adjustable together as a Whole by means of screws 80 and 81, see Fig. 1 which have screw-threaded engagement With lugs 82 and 83 upon the frame of the machine, the upper ends of said screws bearing against depending slide members 84 and 85 which adapted to slide upon the frame 15 of the machine and are guided and clamped in position thereon by bolts 86 and 87 Which project through slots 88 and 89 in said slide n inbers 84- and 85 and are fastened to the arne of the machine.

Y means of the cam '76 a vertical motion .nparted to the block holder through the it A tipping motion is impared to the bloclr holder by a U-Sl'lfij-QGG. cain track 9) 4 inst the upper edge of which a roll 91 mounted on the aclr "frame 61 bears during the operation of the machine. The earn trucl-c is pivoted its ends 92 to a bracket 9 and cain track 90 is adjusted to ditpt cions vertically by means or an screw 9 Which has screw-threaded with the bracket 93 and the up of which bears against the lower the track 90. she bracket 93 together with the cam track 90 may be adjusted vertically by means of screws 95 which bear against depending arms 96 on the bracket 93 and have screwthreuded engagement with ears 97 on the ject through slots 99 in the depending arms 96. The height to which the bracket 1 8 is adjusted together with the traci: 7C- is iudicated by means of an inde linger 100 fast to the t arne 15 and a scale 101 fast to the depending arm 85, While the adjustment of the bracket 93 and cam trac r 90 are indicated b an index finger 102 fast to the frame or the machine and a scale 103 test to the depending arm 9".

i i. iornier 10 i is fastened the vertical shaft of t e block hoidcr and this iornier is adapted to or gage, in the operation of the niachi e, either one of a pair of guides 105 or 106. These guides are duplicates of each other and are slilably mounted upon the trains of the machine, bei adjusted thereon by means an adjust n screw 10? and clamped by means of chain .g p screws 108 to the trains 15.

The general operation oi: the mechanism hcreinbefore specifically described is a foiions. .the motors lo and 51 are thrown into operation by a convenient switch not 1 the drawings thus causing the and to rotat in the direcarrows a and 6 respectively.

1 is placed upon the supof wood port 5i: and the handle of the lever 59 is then depressed causing the lever 58 and prin'iary clarnpinglever 57 to move -i -Y v' it downwardly at their forward ends, thus causing the jaw 55 to be moved doWnWar' ly against the bio sir 55 to clamp it against oloc'n:

coincides with the longitupianc l3-l3, Fig. 5, of the coincides with the longitupianc i kl: oi the swinging c the swinging bracket counter- *ise the block 55 being held in engage with 16 until the p-rts e in Fig. '7. nor 1% is held n l the frame 61 o 1 raised and lowered sl aft 6 arm i l and track 1 upon its pivot 62 by means and earn-shaped track 90 in tie proper shaped cono the b r by means or tor the ieel o the shoe on one side or" the heel train the breast to the middle of the hack thereof. The operator having finished one side of the heel now moves the parts to the position illustrated in big 8, which is the same as the position ilus trated in llig. 5 and then moves the parts until their center lines A if, and 3-3 assume the relativ iioc'tioiu, Lac-.atrated in Fin. 9 and finally to the position illustrated in Fig. 10, thus completing the shaping of the heel ot the shoe. 'l, 1 Ms are then i'lostral iid in moved lJzu-l; to the position thus releaslf ig. 5 and the lever :39 is raised ing the heel ol the shoe and allowing to be removed by the o; :rator tron; the block holder, In the tors are run at speed enables the cntte to and to produce smooth wow; i the rapidity with which the z the blank into the cutter. running inachii the prior necessary to read the hlanl: s cutter when breast where grain.

We claim:

1. A inai-nine for shaping wooden heels having, in combination, a? electric motor including. a rotary spindle, a cutter fast to said spindle, a bracket pivoted to swing on the frame of said machine, a holder for a block adapted to slide vertically upon said swinging bracket and a cam on. sad frame adapted to impart a rcciprocatory vertical motion to said hlocl: holder.

2. A, machine for slurping- .voodcn heels having, in combination, an electric motor including a rotary spindle, a cutter fast to said spindle, a bracket pivoted to swing on the frame of said machine, a holder for a block adapted to slide vertically upon said swinging bracket, a cam on said frame adapted to impart a reciprocatory vertical motion to said block holder and means to raise and lower said cam.

3. A machine for shaping wooden heels having, in combination, an electric motor including a rotary spindle, a cutter fast to said spindle, a bracket pivoted to swing on the frame of said machine, a vertical shaft slidably mounted on said swinging bracket, a horizontal pivotinovable wit,

said vertical shaft, block holder pivotaladantcd to former wher aid noved to so position ely to said cutter that .pcd to form a wooden heel.

for shaping wooden heels pair of plectric eluding a rot spnid using adapted lc rend in oppos te rnrections, 21 cm oi said smiles. a lJETPJLfi F-JQ on frame of said inach'se, a

blo lc :ulapt d to .lally upon 'aclzet a cam on said a reciprocatory ,n'aion to said block holder. i'siachin shaping wooden heels ination, a pair electric wlndii a rotary spindle, a

it"er last to each c said spindles, said lies horns; adapts to rotate in opposite ct" re aly, bracket pivoted to swing on t 1e of said'machine, a

vertical shalt slidably mounted on said swinging bracket, a horizontal pivot mm abic with said vertical shaft, a block holder pivotallv mounted to rock on said pivot, means to in'ipart a vertical movement to said shaft and means to rock said block holder upon its pivot.

8. A mac-hi for shaping wooden heels having, in combination, a pair of electric motors each including a vertical rotary spindle, said spindles being; adapted to rotate respectively in opposite directions, a cutter fast to each of said spindles, a holder for a block, a bracl 'et mounted to upon the frame of said machine and upon which sa d block holder is pivotaily mounted, a former fast to said clock holder and stationary guide acent to each of said spindies respectively, sail guides adapted to he engaged alternately by said former, whereby said block holder may he moved to so position said block r latively to each of said cutters that it may be shaped to form a wooden heel.

9. A machine for shaping wooden heels having, in comhi scion, a frame, on electric motor including a rotary spindle mounted on said frame, a cutter fast to said spindle, a brac 'et pivoted to swing; on said frame, a holder for a block adapted to slide vertically bracket, an auxil y e unted en sail;

d adap i to a recipreeaory verlii ction to said block us at. said cam on said and means to adjust said vertically trwse. efor shapii Woodsheels 'on, a frame, an electric 'ctary spindle mounted test to the s; heel l lock, a ca pivoted for movement to that of the spindle therete respectively, ara heel block on the holder I l ion with the cutter While permitting relative to-and-fro movement of the holder and cutter to shape the heel as the holder turns'abcut its said parallel pivotal axis, and a cam for tilting the holder about the said perpendicular pivotal axis to govern the pitch of the heel being cut.

11. A machine for shaping Wooden heels having, in combination, a frame, an electric motor including a rotary spindle mounted on the frame, a cutter fast to the spindle,

rel

In testin'ionv whereof We have hereunto set our hands in presence of two subscribing witnesses.

ARTHUR E. FOLSOM. JOHN H. VINTON. WILIJMLM M. WHITNEY.

Witnesses:

FRANKLIN E. Low, CHARLES S. GoomNe.

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