US1041692A - Burnishing-machine. - Google Patents

Description

G. F. STAOKPOLE. BURNISHING MACHINE. APPLICATION ILBD D Patented Oct. 15, 1912.`

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o. P. STAGKPOLB.

` BURNISHING MACHINE.

APPLICATION FILEI) DEG.19, 1911.

w w 3M 6. wf. 0,. ak 1 WG CHARLES F. STACKBOLE, OF LYNN, MASSACHUSETTS, ASSIGNOR OF ONE-HALE T i ALFRED H. yHKIWVAIMIJ1 OF BOSTON, MASSACHUSETTS.

Loiaeaa.

'To all whom tt 'may concem:

" Be it known, that I, CHAHES F' STAGE' i Porn, a citizen of the United States, residing i 'at Lynn, in

the county of. Essex, State of Massachusetts, have mvented a certain tnew'and useful Improvement in Burnishing- `f Machines, of which the following' is a speciv ification, ,reference being had therein to the accompanying drawmgs.

The invention comprises improvements in actuating devices for reciprocatory tools, more particularly the tools employed in edge-burnishing machines used i'n the manu- :facture of boots and shoes. Also, in means of heating such tools.

General' objects of the invention are to provide actuatng means of simplified character and construction; to obviate liability to spotting or staining the work with lubricat-ing oil; 'to enable a high speed of movement of a tooll to be attainedv without no- 'ticeable jar or vibration, to provide for the I hea-ting of the tool without the use of flame `thereto embodiments of the features o ing nut being broken away. Fig. 4: is a frontelevation on the same order as Fig. 1, but showing a'diiferent form of cam for actuating the tool, the collar and lock-nut being removed from the adjusting-screw for the spring-mounting of the tool-carrying arm, Fig.` 5 is a detail view showing a third form of cam. Fig." 6 is a view similar to Fig. l but showing a different mode of supporting the tool-carrier, and a different meansof applying spring-tension, the upper end of the spindle of the tool-stock being broken away. Fig. 7 is a side e'levation of the parts which|` are shown in Fig. o. Fig. 8 is a front elevatioii of a construction in which the cam works within a yoke in connection with the tool-carryingarm. Fig. 9

's a detail view illustrating a sim lified construction in which the tool or its stock is' directly engaged by the cam. Fig. 10 is a specification of Letters Patent. Application filed December 19, 1911. i Serial No. 666,656.`

' general contour detail view of the Working end of the tool of Fig. 9. i

Having reference to" the drawings,-in each of the main views the head of the sup- 'porting frame of a bnrnishing machine is shown at 1, and 2 is a rotary shaft which is mounted in the said head in bearings applied to the latter, one of the said bearigs being partly shown at 3. Only' the forwardly-projecting end-portion of the shaft is represented. This end-portion is operatively combined with the tool-carrying arm 4, for the purpose of occasioning reciprocatory movement thereof, as is explained hereinafter in dealing with the features of the invention. The tool-carrying arm may be constructed and equipped to carry a single tool 5, as in some instances in practice, or a plurality of tools, as also, common. It is shown provided with a shifting tool-stock 7 having twoprojecting pins 7a, 7 a, on which two tools 5, 5, 'are mounted. The said toolstock 7 is mounted rotatably upon the arm 4 in well-known nianner providing for enabling either of the said tools to be shifted into workingl position, and the tools have sockets receiving and fit-ting said pins with capacity to turn slightly thereon under the restraint of latching Springs 7, 7b, as usual,

excepting that by preference the sockets are somewhat longer than ordinarily in practice. X is a Worlrrest located in convenient position below the tool-carrier and tools, it

being shaped to constitute a finger-hold, as

usual.

Referring now more particularly to the parts more immediately involved iii the iiivention-the rotary shaft 2 is operatively combined with the tool-carrying ai'm i by means of a cain or its equivalent in connection with said shaft, acting upon the said arm. The construction of the cam and arm, and, the mannei' 'of mounting the arm, may vary. In Figs. 1 and 2 the cam 6 is coiistituted by a' simple eccentric; in Figs. 4, 6 and 7 the cam (ia is a. two-thi'ow elliptical 5 the cain 6b' is a three-throw triangular cam. The pi'ecise Shape in crosssection of the cam is not material, but the should be rounded and free fromsharp or Sudden changes in dircctioii. In the said figures (1 to 7 inclusive) a surface LP upon or in connectioii witli the toolcarrying arm is maintained in contact with the cam by spring-tension actmg in conneccam; in Fig.

Patentefioeaiaieie.

. tension eifecting the return of theA arm andv A45 cam. The sald spring yields transversely 55 In connection vwith 'the cam 6 and the arm 65 shell in Figs. 1 and 2 is circular in cross-v section to fit the cam 6 of such figures. The shells 10R of Figs. 4, 6 and 7 are elliptical to fit the elliptical cams 6a, 6a, of such figures, and the shell 10b of Fig. 5 is triangular to fit tion with the said arm, the outstanding eccentric or projecting prominence or prominences of the cam act-ing to push the arm and tool in one direction and the springtool in the reverse direction. The means and manner of applying 'the spring-tension may Vary.

Figs. 1, 2 and 4 show a novel means of 10 supporting the' tooi-carrying arm and at the same time securing 'the desired'spring-tension in connection with the same to insure proper co-action with the cam. In the said figures the arm 4'is attached by bolts w, w, to one side of a downwardly-projecti'ng extension or lug 8a constituting one extremity of a C-spring 8 of circular curvature, the said spring having its opposite extremity constituted by a second extension or lug .8b projecting outwardly in a horizontal direction. The extension or lug 8b is made fast by a bolt w' to the under side of a forwardlyprojecting portion 9 of a plate 9' which is bolted upon the top of head l. Thereby the spring is supported upon' the machine-head, so that in turn it supports the arm 4. The longitudinal axis of the arm 4 and the tool 5, and that of the extension or lug 8b, are in planes which are radial or approximately so with respect to the center of the C-spring. Such planes in this instance are atrright angles with each other. To permit adjustment of the tool-carrying arm bodily toward and from the center of shaft 2, the hole :v2 made through extension or lug 8b of sprin mounting 8 for the reception of bolt is in the form of an elongated slot. A nut m8 upon the threaded stem'of bolt cc' above the support 9 serves' in conjunction with the bolt, 40 when turned down upon the latter, to clamp t e, spring-mounting in the position. into which it has been adjusted. The tension of the C-spring operates to hold the surface 4a of thetool-'car'rying arm in contact with the employmentpf vulcanized fiber, or of other antl-attrition material' in conjunction With the camI or it'sfequivalent and the tool-carrying arm 4 renders unnecessary lthe use of oil is, therefore, no liability of injury to the work b spotting or-staining from flying or spattering oil.: Such spotting or staining is very common in the case of machines at present in use employin for the actuation of the, tool-carrier a cran and a connectingrod with split boxes or bearings. The em-' ployment of the C-spring as a mounting and support for the arm 4 in the general construction shown in Figs. 1, 2 and 4, dispenses with all pivotal supporting bearings in connection with such arm, and still 'further eliminates the occasion for the use of lubricating oil in proximity to the work, and the liability of spotting or staining of the latter. i Z

The cam is r'otated at a high rate of speed in practice.v In consequence of the contact of its shell of vulcanized fiber with the| metallic surface 4*11 'of the arm 4 at such high rate of speed, a considerable amount of heat is genei'atedyand such heat is transmitted to the tool or tools '5, heating the same properly or the desired results in burnishing. To ,enable'the degree of heat which is imparted to the tool' to be regula'ted, provision is made for varying at will the spring-ten'sionwhich bears the surface 4a against the cam, and consequently the pressure between such surface and that of the cam. Tot-his end, in Figs. 1, 2 and 4 the C-spring is made adjustable upon its support 9, as explained hereinabove, so that surface '4*' of the arm 4 may betcaused to press with greater or less force, as may be required, against the cam. For convenience in .making the adjustment, and in order that the heating action may be r` gu lated to a nicety, I have combined adjustingscrew devices with the spring-mounting 8. The character' and' construction of such devices may 'vary in practice In Figs. 1, 2, 3, 4, an upturned ear 8 of' extension or lug 8b of the spring-Inountin' has a screw-threaded hole tapped horizonta ly therethrough, such as the said cam operates to push the said arm and tool forward. It yields vertically to the upthrust of the work presented by the operative beneath the lower end of the 50 tool which-is in action, vand operates to cause the tool tov act with yielding down-pressure upon the work. In operation, 'the tool-carrying arm vibrates about 'a point located centrally of the C-spring, or nearly'so.

ed stem of an adj'ustin v-.screw 11, the inner' end' of which makes lcontact withpone side of support 9. Upon this screw, outside the car 8, is mounted a collar 12-'having` a 4 I provide a surfacing of anti-attrition` material which receives the actual contact and pressure betweenthe -cam and arm. This surfacing preferably, thou h not necessarily 60 in all cases, is composed o vulcani'zed fiber. I have shown the same a p'liedltov the cam by fitting a sleeve-like shelil 'or jackt off'the anti-attrition material to the' cam, such shell surrounding the periphery of the cam. The

the'collar by hand; The said collarrhas a' radial threaded hole which is'occupied by a the reduced" inner end of which enters a groove 11', Fig. v 3, formed inthe ad- Ijusting-screw 11 w nd extending lengthwise lthe'triangular cam 6b of such .figure The 70 or the like as lubricant between them. There 75 hole :having screwed into the same the threadknurled flange for convenience in 'rotating 1'25-v ananasaof the latter. By turning the collar t-he screw is turned within the threaded hole in the upturned ear 8 of the extension or lug 8b, so that the inner end of the screw shall project more or less from the ear toward the 'spring-mounting and arm have been adjusted, to hold them in the required position. At 18 is a lock-nut upon the outer poi'tion of screw 11, such lock-nut serving to clamp the collar l2-against the outer surface of e'ar 8c to prevent accidental loss of adjustmentof the screw and the spring-Inounting and' arm.

At 4x, Figs. 1 and 4, is a layer 'of fashestos or other heat non-conducting material, interposed between tool-carrying arm 4 and the extension or 111g SVa of the spring-mounting, to obviate the transmission of' heat to the said spring. A similarlayer ly is or may be applied between plate 9' and thetop of head 1 of the machine to deaden the sound. Figs. 6 and 7 show a different form of mounting for the tool-carrying arm, and a different means of producing the springtension and regulating the latter. In these figures the tool-carrying arm t is hung-a't its upper end by means of a pivot 15 to a horizontallyeXtending arm 16. The arm 16 in its turn is hung by a pivot 17 to an upright portion 9a of the top-plate 9'. The horizontal arm 1G and ptool-carrying' arm are afforded Vertical support by means of a nut 18 upon a screw-threaded stem 19 set in a portion of plate 9 and rising thcrefrom. Said stem passes through a hole in the arm 16. The latter rests upon the Vnut- 18, below which is a lock-nut 18aL upon the stem. By

turning lthe nuts up-or down, the arm may be adjusted to occupy normally a higher or lower position as required. The stemlis surrounded above the horizontal arm 16 by an 'f expanding spring composed of a block of rubber 20, which is confined between the top of the arm and a washer 21 held in place by an adjustable nut 22 and locknut 23 upon the top portion of the stem 19. The spring 'g 20 yieldsislightly to accommodate the upthrust from the work which is pressedaup Ward by the operative against the vworking end of the tool. The spring-tensionl which maintains the surface 4? of the tool-carrying` arm pressed against the actuating cam is applied by means of a leaf-spring 24 haying 'one end thereof engaged witha support upon the fixed framework, and the other end thereof arranged to act in connection with the tool-oarrying arm 4. With the latter end is composed a small leather block 25,

which. is interposed between the spring and p the arm L1 to take the wear due to relative lengthwise movement of the arm and spring as they swing back and' forth together, and in addit-ion obviate noise. The upper end of the spring 24 is fastened by a screw 26 to a small block 27 that is mounted by means of a transverse pivot 28 upon small uprights 29 rising from the top-plate 9.` An adjustingscrew 30 has its threaded steni fittedl to a threaded hole that is tapped through the base-portion of the said nprights, and its inner end engages the leaf-spring 24. By turning the said adjust-ing-screw 30 the tension of spring 24 is varied, andthereby the degree of force with which the surface 1a of the tool-carrying arm is pressed against the cam is regulated. A lock-nut 31 1s applied to 'the adjusting-screw 30, the said lock-nut making contact with the outer surface of the said base-portion of uprights 29.

i Fig. 8 shows a construction in which an eccentric-shaped cam GC and shell 10c similar in form to the cam 6 and shell 10 of Figs. l and 2, and acting at one side thereof against a surface 4:*1 of the tool-carrying arm 11, act at the other side against one surface of a plate or strip 11 supported by posts 4G, 11, projecting from the arm a. T he plate or strip 11 is held to the said posts by means of screws 4d, 4d. These 'scre'ws may be turned to adjust the closeness of fit of the surface 4a and plate or strip| Z.tlfagainst the opposite sides of the e'ecen't'ic-cam. In this construction the 'Cain acts positively in effecting the return-movement ofthe tool-carryinrrv arm, and by adjustment of thescrews 4d, 4d, wear and resulting play of the relatiVely-moving surfaces may be taken uptand the heatingaction may be regulated. The eXtent, Vertically, of the space inside the yoke within which the eecent'ric-cam works permits the desired Vertical yielding action of the toolcarry'ing arm and tool during the operation ofburnishing the edge of a shoe-sole.

Fig. 9 shows a construction in which the tool, 5a, is integral with a stock 5b, which is rigidly attached by bolts 03, 08, to the extension or lug 8a of the C-spring mounting 8, and a rotating cam 6 with its anti-attrition surfacing 10 engages directly with the said tool-stock to actuate and heatl the tool. The form of the said tool is illustrated in AFigs. 9 and10. WY

I claim as my inventio'n':

1. In a burnishing machine, in combinavtion7 an actuating cam, and a tool-carrier maintained in lmmediate engageinent with the said cam by spring tension, said cam producing the movement of the tool-carrier in one direction and the spring tension pro-.

ducing the movement in the other direction,

`the moving' contact between the cam and a surface in connection with the tool-carrier imparting the heat required for .the burnishing action of the tool.

2. In a brnishing machine, in combination, a tool-carrier,fa rotatingcam actuating said tool-carrier, and anti-attrition surfacing dispensing with the use of oil between the said parts and also efl'ecting the heating of the tool for the burnishing action through moving contact between the said surfacing and the surface contacting therewith.

In a burnishing machine, in combination, a tool-carrier, and a rotating cam-surface of anti-attrition material operatively engaging with said tool-carrier to actuate the same, and efliecting the heating of the tool for the burnishing action through the movement of such cam-surface relative to the surface which contacts therewith.

4. In a burnishing machine, in combination, a tool-carrier, a rotating cam-body for actuating said tool-carrier, and an anti-at- I trit-ion shell or jacket upon said cam-body engaging with a surface in connection with said tool-carrier, and efliecting the heating of the tool-carrier and tool for the burnishing action through moving contact between I said shell or jacket and a surface in connection With the tool-carrier.

5. In a burnishing machine, in combination, 'a tool, a tool-carrier, a rotating cam eng'aging said tool-carrier, and a spring m'aintai'ning the tool-carrier in continuous engagement with said cam, said cam and spring imparting reciprocatory movement to said. tool-'carrier and also imparting the heat required for the-burnishing action to the tool in 'consequence of the moving contact of the cam-surfacewith the tool-carrier. 6. .In a burnishing machine, in combination, a tool, a tool-carrier, a rotating cam imparting reciprocatory movement 'to the tool-carrier and also imparting the heat required for the burnishing action to the tool in consequence of the moving contact of the cam'-surface with the surface engaged thereby, and means for varying the said eating action.

'7. In a burnishing machine, a rotating cam, a tool-carrier, and means in connection with said tool-carrier for permitting the lattion, a rotating cam, and a sprmg-held tool- :held by sprlng-tension in continuous engagement with the said cam.

=tion, a rotating cam, a tool, a tool-carrier, ,means in connection with said tool-carrier :for permitting the latter to yield vertical'ly vand also for holding it with spring-tension in contact with said cam, whereby the toolfcarrier and tool are reciprocated and heat is imparted to the tool, and means for adjustling the spring-tension to regulate the heat- 'ing actio v 10. In a burnishing machine, in combina- ;tion, a rotating cam, a tool-carrier, and a spring-mounting for said tool-carriersup.. iporting the latter and also holding 'it elastically in engagement with said cam. 11. In a burnishing machine, in combination, a rotating cam, a tool-carrier, a springmounting for said .tool-carrier holdinl'g it bv spring-tension in engagement wit cam, .and means for adjustingthe springmounting to vary the heating action of the cam. z

12. Ina burnishing machine, in combination, a rotating cam, a tool-carrier eng'aged by'said cam,l and a C- spring mounting for said tool-carrier supporting the latter' and maintainin it in contact wlth' the ca'm.` I

13. In a urnishing machine, in I,o onbinae tion, a rotating cam, a tool, a tool-carrier engaged by said cam, a C-springmoulnting for said tool-carrier, and means to zadjut the said mounting to vary the pressure between the tool-carrier and cam and thereby regulate the heating of the tool.

m presence of two witnesses.

'CHARLES F. STACKPOLE.` Witnesses:

` NATHAN B. DAY,

CHAs. RANDALL.

Gopies of this patent may be obtained for flve eents each, by addressing the Commissioner 'of Patents.

Washington, 0.

9. In a 'burnishing machine, in combinacarrier adapted to yield vertically and also In testimony whereof I aflix my signature.

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