US1658079A - Beveling machine - Google Patents

Description

Feb. 7, 1928.

H. M. EATON BEVELING MACHINE Filed March 2, 1925 l L/ WZ Patented Feb. 7, 1928.

ST A TES A TENT n l CE E ORGEM. EATN, GF LYNN, EASSACHUSETTS,.ASSGNOR, BY BRECT AND IJEESNE AS- *SIGUIENT lO BOX .TOE C0., OF LYN, IYIASSACHQETTS, A CGRPORATON BEVELNG MiGHINE.

.application sieii March 2, i925. seriai no. 12,805.

This invention relates to the art of making stiffeners such as bonr toes, counters and the like, for boots and shoes and more particularly to an improved manne of beveliiig the edges thereof. r)The material from which the stieners are made may comp ise a layer of fibrous material impregnated with .a cell lulosic compound deposited in the interstices of the fibrous,material7 either with or without a sheet of paper bonded to one sideof the layer of fibrous material.

rlhe customary way of lieveling or skiving counters, box toes, etc. is to pass them t-hrough various forms of skiving machines having fixed or movable knives and various feed roll mechanisms. ln the case of material of the type specified, which may be very thin7 this inode of operation can not be ,relied upon since the knives are apt to do uneven work on the thin edge and thus many of the stiffeners arefthereby rendered unsatisfactory for use.

Among the objects of the present invention are the provision of an improved apparatus for beveling or skiving box toes and other sti'eneis for boots and shoes, which will overcome the ldifficulty attendant upon the other modes of beveling or skiving mentioned and enable the provision of a tapered edge which gradually thins in the desired manner without being cut away excessively atv any point.

In a preferred embodiment the invention comprises a sanding roll or wheel, a table adjustably mounted with respect to the roll,

and-means for holdinga blank and ymoving it relativeto said roll and over the surface of said table. l?referably:the table serves to guide the travel of 'the blank and the vblank holding and moving means has portions cooperating witlirthe table to control its movements and to facilitate'the lieveling of the edge of the blank. Preferably also vthe yblank holding means may be provided with portions supporting` the relatively thin blank until the support ofthe latter is taken up by the table and then moved vprogressively relatively to the holding means to permit lmovement of the latter relative to the table.

In the accompanying drawings? in which for purposes of illustration one embodiment which the invention may Yassume in practice is disclosed,

Y Fig-. 1 represents a front view of a simplified form ofthe invention;

Fig. 2'is a vertical section on the line 2 2 of 'F ig. l;

`3 is a top plan view of a holding means. y

Referring to these drawings, in Which .the invention is fer simplicity of disclosure shown in the form of an attachment to an or.

dinary sanding machine, i represents the roll of a sanding machine. Thisroll is supported upon a shaft Q'and is rotated at a high rate of speed. Suitable supporting means not shown, maintains the roll in fixed relation to a machine frame 3. To thelatter there is secured, as by machine screws ll, ai supporting frame 5, which is Lprovided lwith a series of bores '6. nto the bores G yproject rods T supporting and carrying a 'the guides 7. By releasing the set screws`l9 they work table may be moved-back and forth horizontally relative to the vertical plane :including the axis of thesanding roll.` By "unscrewing the cap screws la the table vl0 is free for vertical'adjustment which'may be accomplished by manipulation of lthe screws '17, and when adjustment is completed the tablemay be locked in position by tightening the screws la. A simple form of clamping mechanism for supporting and holding the blanks B during operationupon them by the roll l isgenerally designated 20. This mechanism comprises manuallyl operated grasping jaws 2l and22 between which the blank B maybe gripped; The vlower jaw carries atemplate 23 secured thereto by screws 2li, thetemplate limitingthe distance to which the blank B may be inserted beneath the sanding roll and operating in Athe ferm shown byreason of its rounded vforward edge 25 to permit a swinging of the blank relative to the roll whereby a convexedged blank may be beveled. rlhe contour of the template also guidesthe operative in placing the blank in the jaws 2l, 22. These templates are readily removable for change from one to another, and are convex for convex blanks and concave for concave blanks. y

Pivotally mounted in recesses 26 at the forward corners of the lower jaw 22 are members 27. These members have portions 28 slidable upon the upper surface of the template and terminating in upturned flanges 29, whose tops lie in the plane of the surface of the lower j aw 22. The flanges 29 are adapted to provide support'for the portion of a stiffener blank which lies in front of the jaws. rlhe members 27 also comprise arms SO bent beneath the template 25 and extending forwardly and connected by a light coil spring 3l engaging in openings 32, whereby the flanges 29 normally occupy thefposition shown in Fig. 8, but may be moved rearwardly to the position shown in F ig. 2 when tne clamp or holding means 2O is moved to the position shown in that iigure.

The mode of operation of the mechanism described is evident. The work table is adjusted to the desired position, the'extent of beveling being determined by the extent to which the blank may be brought beneath the roll, and the vertical adjustment of the table determining` the thickness of the thinnest portionof the beveled edge. Assuming that a blank with a convex edge is to be beveled,

it is gripped Yin the grasping jaws 2l and 22' with its forward edge in alignment with the forward edge of the template. ln this position, the portion in front of the jaws is supported at spaced points by the flanges 29. The blank will then be slid upon the table surface ll, the members 27 swinging about their pivots as the jaws approach the front edge of the table. The work holder may be oscillated upon the curved surface 25 of the template 23. As a result a convexedge blank vmay be provided with a relatively wide gradually tapering beveled portion which at no point penetrates through the material of the blank. ln the case of a concave-edged blank, the work holder is not rocked, but instead moved straight towards the sanding roll. As a result the rear line of the bevel is straight and the corners are beveled to a greater extent, a desirable condition both because it gives a straight line across the toe and because it gives the corners a longer bevel. f

The template prevents the forward edge of the stiffener blank being advanced too far beneath the sanding roll, and also precludes its being raised above the surface 1l to a harmful extent.

'Generally the template employed will be selected to correspond in shape with the edge of the stiffener to be beveled, though in the case of concave-edged blanks this 1s unnecessary, though desirable as facilitating ac-V curately placing the stiffener in the clamp or worp; holder. lt will be noted that stiffeners of differentdept-hs vmay bebeveled by the mechanism by simply setting the smaller blanks forward sufficiently in the jaws to bring their edges to be beveled into line with the front of the template.

llVhile there is herein described one form which the invention may assume in practice, it will be understood that this illustrative embodiment may be extensively modified and 'that the invention may even be embodied in` other forms without departing from its spiritor the scope of the' appended claims. For example, in bevelingthe edges of counters the templates may be shaped to correspond to the contours of the edges oi the count-ers.

l claim:

l. Apparatus for lieveling stiffener ele ments and similar articles,which.comprises a rotatable cutting element, an adjustable table adjacent to said element'adapted to ,provide a stationaru support-ing surface for the articles 'to bebeveled, means for'adjusting the position of said table relative to said cutting element in directions 'substantialljf parallel and perpendicular to said surface, means for holding the article in posi-- tion on said tablev in contact with said cuttingr element during the beveling operation,

and means cooperating with said table and Y responding in shape to the edge of the stiflener, andadapted to be guided by a flange on the under side of the work table.

3. Apparatus for' lieveling bootr'and shoe` st'ffeners and similar articles which comprises a movable cutting member, a work table for holding the work to be beveled having an extending edge providing. a supporting surface, means for adjusting thek table in position with respect to said cutting` member, a pair of clan'iping jaws for holding the work, a template having its operating edge corresponding inv shape to the edge of the work to 4be beveled, means for connecting the said template to said jaws in a position parallel to but spaced vfrom the plane of engagement of said jaws to prolos Cil

vide a recess between the article and the template adapted to receive said edge of the table, and a liange on the under side of the work table'for contacting with the operating surface ol said template and thereby Y guiding the work during the lieveling operation.

4. apparatus tor holding` a stiliener during the operation thereon of a sanding eleinent comprising a pair of clamping jaws meeting .in a plane, a template secured to one ofi' said jaws and projecting 'forwardly7 therefrom in parallelism with said plane, and means attached to said .jaws movable relative to said template and having por 'tions adapted to support the stili'ener element, said portions terminating substantially at said plane.

5. apparatus for holding a stiflener during the operation thereon or a sanding element comprising a pair of clamping aws meeting in a plane, and means for supporting a portion of the stifiener projecting from said jaws including at least one element having a portion terminating substantially at the plane of meeting oi said jaws, said portion being movable towards and away from said jaws.

6. Apparatus for holding a stihiener element during the operation thereon ot a beveling device comprising a pair of clamping jaws meeting substantially in a plane, means for supporting a portion of the stillener element projecting beyond the said jaws including` movable elements and means for rcsiliently holding said movable elements in position normally in advance 01"' the jaws, said movable elements being adapted to be moved toward said jaws.

7. Apparatus for holding a stiftener element during the operation thereon of a beveling device comprising` a pair of clamping jaws adapted to meet in a plane, means for supporting the said stilifener element at a portion thereof projecting beyond or in advance of the said jaws including' a plurality ot elements pivotally connected to one of 'the sait jaws and having portions adapt-- ed to support the said stiffener element in advance or the jaws and spring actuated meansvconnecting end portions of said supporting elements for resiliently drawing them toward each other.

8. Apparatus for beveling stitfener elements for boots and shoes comprising a sanding` wheel, a table having a. flange adjacent the sanding wheel ior supporting the work, a clamp for holding the work while it is moved over the surface oi the lange adjacent the sandingl wheel, and a template device associated with the clamping means adapted to pass on the opposite side of the flange and to be guided by an abutment on the said oppositeside of the flange.

9. Apparatus for beveling stiener elements 'for boots and shoes comprising a sanding wheel, a table having a flange adj acent the sanding wheel for supporting the work, a clamp for holding the work while it is moved over the surface of the flange adjacent the sanding wheel, a template device associated with the clamping means yadapted to pass on the opposite side of the flange and to be guided by an abutment on the said opposite side oi' the lange, and means 'for supporting a vstiener element engageable withy said flange and yieldably mounted with respect to said clamping means.

Signed by me at Boston, Massachusetts, this Qth day of February, 1925.

f HORACE' M. EATON.

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