US1443327A - Clicking-machine block - Google Patents

Description

W. L. TOURTELLOT. CLICKING .Fan. 23, 1923,

MACHINE BLOCK. MAR. 22, 1920.

(III/III Patented Jau. 23, 1923.,

mran STATES- parar o'rri esiw XVAYNE L. TOURTELLOT,' OF AKRON, OHIO ASSIGNOR TO 'THE GOODYEAR' TIRE &

RUBBER COMPANY, OF AKRON, OHIO, A`CORPORATION OF OI IIO.' i

CLICKING MACI-IINE BLOCK-.-

and has particular reference to the cutting` hlocks or tahlesupon which the cutting or dieing out `operation is performed. The in-` vention as herein1 shown is ,applied to What is commercially known: as a clicking Inachine although it 'will be understood, as Will be readily apparent, that my improved device can 'be used to .advantage generally in the particular art to which it relates.

Atthe presenttime the cutting, blocks commonly used for this purpose consists usually of uncovered Wood, or of Wood or other material having the cutting surface covered over With `a sheet of comparatively soft metal such as Zinc. In the case of the Wooden blocks the expense of resurfacing or planing the blocks froni time to time is considerable, and the loss due to interruption` ofnproduction on account of such resurfacing is an item of no small importance.

When a zine plateis placed over the top surface of the block, the die has a tendency to bite toodeeply` into the zine, due to the absence of resiliency in the block stopping the clicking machine head from completing its stroke.

It 'is one of :the principal objects of the present `inventiontc provide a cutting block having; a coinparatively soft top or cutting surface the block being; so constructed as to be suificentlyyieldingor resilientthat the die Operating under-the clicking head Will function: properly making a. clean sharp cut,` Withoutthe dicsticking in' the cutting surface of the block. u

Another important object of the invention isto provide a'construction ofucutting block in `which, 'the element =of :resilieney is evenly distributed relative to the entire surface thereof sothat theclickinghead and die Will operaterwththe same efficiency ati-allltimes over anyxportion of .thesurfa ee *of the -blockg.

Other ,objects and advantages will become 'eadily apparent VllGIl the following-de scripton `is: read in `'conjunction With the accompanying drawings, certain'features of Construction and combinaton of parts for' whichprotection is desired beingassemblecl and pointed out inthe claiins appendedhereunto and forminp; a part of this specification.

'In the drawing, Wherein I have illustrated a preferred type of my invention.

Figur-e 1 is a perspective VOW of a portion, of a clicking machine With `ny improved cutting block mounted thereon.

Figu-e 2 is a longitudinal vertical section of .the block eonprising my ,inventioL ;Figure 3 `is ai fragmentary disassembled perspective ofa, portion of .the device; and

Figure 4 is aperspective of a portion of the rim or retainingband) The portion of a clickingmachine shown .in the drawing is of awell knowntypeand comprises a .table or base upon which has been mounted my inovel cutting block designated by the numeral 6. This type of machine enibodies a vertical .reciprocatory` post `or shaft 7 and a swingable clicking head or -beani 8 -carried thereby, `the `latter being' inanually swingable about the post in` order that it may be positioned .over :any desired portion of the surface of the table& Usually in this type of machine aJclie; is employed which is Inanually. shifted over. thematerial placed ,upon thecuttingblock,

and is` driven home by the reciprocating;`

shaft 7 'and'beam 8. Noparticular mech anism for; reciprocating the shaft `7 has been illustrated, .it being understoodrthat the machine per se forms no part 'of the 'present invention and thereforeneeds no further description.

The cutting block (i "which `constitutes the subject matterof this inventioiu I have constructed of three layers of material rec tangular in shape and of the'saine'length and the same` Width. The uppex` layer 9 foriningthe: cut-ting-surface is preferahly' fornied of a .soft typezof metal suchasvzine or the like, the :intermediatelayer or rein forceinent 10 fortheupper layer :is of' rel atively harder; material such assteel, .While the thirdor lower. layer 11 is composedgof the layers 9 and 10 are riveted together as shown at 12.

A retaining band' or rim 13 is designed to fit snugly around the edges of the layers, composing the clicking block, to maintain the same together as a unitary structure,

and at the same time permit a free vertical' movement of the upper layers against the resilient lower layer. The band or rim 13 is provided with protruding lugs 141 which are adapted to be engaged by such means as clamp hooks 15 whereby the block is rigidly secured in Operating position upon the bed 5. If desired the cushioning ele ment 11 may be Vulcanized at its edges to the retaining band 13 to prevent any tendency of the rubber or other resilient material to creep under the pressure transmtted to it by the head or beam 8.

By means of this retaining band 13 the rubber cushioning element is confined at its margin thereby preventing elongation or lateral movement of the outer portions thereof under the blow of the head or beam 8 against the die. This eliminates the tendency of the material in the cushioning element 11 to spread or fiatten out around the zones adjacent its edges when the die is forced home near the edge of the block, thus providing for uniform resiliency throughout the area of the cushion.

This feature is of primary importance particularly in machines of the characters illustrated wherein the clicking head must drive the die home, that is through the material, upon any portion of the bed surface bythe same length of stroke and with such precision that any variation of the degree of resistance of the material supporting surface results in jamming or sticking the die at that portion of the surface presenting the greater resistance.

By means of a block constructed as above described this tendency of the die to stick or jam, found in Operating with clicking beds as now constructed, is practically eliminated and a clicking block is provided which does not readily deteriorate as do the commonly used wooden bloclzs, which constantly need resurfacing and adjusting.

While a simple and preferred embodiment of my invention has been shown and described it is to he understood' that various changes in form and structure may be 're sorted to without departing from the spirit of the invention, for instance the upper and second layers may be combined in a unit of metal such as a soft metal having a chilled or harclened under surface or the reverse 'if desired. Various devices may be substituted for the returning band 13, other forms of cushioning means may be used and a different order of asse'mbly of the'several devices maybe adopted, all of which fall within the scope of the appended claims,

"sVhat l claim is:

1. A cutting block comprsiug an upper layer or die receiving surface, an intermediate layer or hacking, a' bottom layer or cushioning element, and a retaining band extending around the edges of the latter layer.

2. In a cutting block constructed of a plurality of layers, an upper layer forming a die receiving surface of a comparatively soft material, an interposed layer of a comparatively hard material and a bottom layer of a resilient material.

3. In 'a cutting block for clicking ma- Chinos, an upper layer of comparatively soft metal, an intermediate layer of harder metal than said first layer, .a bottom layer of rubber, and a retaining band around the edges of the layers.

1. A cutting block including, a resilient slab, a hard metal plate superposed upon the slab, a second plate of softer material superposed upon the first plate and attached thereto, and a retaining band binding the edges of the slab, and having portions projecting above the slab to confine the first and second plates against lateral movement with respect to the slab.

5. A cutting block including, a rubber supporting slab, a retaning band to which the edges of the slab are vulcanized, surrounding the slab, the band having portions projecting above the slab, a metal plate superposed upon the slab, and a second relatively softer metal plate superposed upon the first plate and attached thereto the plates being confined by the projecting portions of the band, against lateral movement with respect to the slab.

6. A cutting block including, a resilient supporting slab, a metallic plate superposed upon the supporting slab, the plate having its upper surface and its lower surface finished to different degrees of hardness, and means adjacent the edges of the slab and the plate for confining said slab and plate against lateral movement with respect to each other.

7. A cutting block including, a resilient supporting slab, a soft metallic plate superposed thereupon, and having a hard, finished lower surface, and means adj acent the edges of the slab and the plate for confining said slab and, plate against lateral movement with, respect to each other.

A cutting block including a support-- ing slab of rubber material, a soft metallic plate superposed t hereupou, and having a hard finished lower surface, and a metallic band surrounding the edges of the slab and plate to confine them against lateral movement with respect to each other.

9. A cutting block including a supporting slabof rubber, a'retaining band to which theedges of the 'slab are vulcanized, sur.-

roundng the slab, the band having portons In testmny whereof I have signed my projectng above the slab, and a metal plate name in the presence of two subscrbng supe'posed upon the slab and guded for witnesses. t

Vertical movement With respect thereto by WAYNE L. TOURTELLOT. the projecting portons of said band, said VVtnesses: y plate having its lowe surface ofa greate: t A. J. KNIGHT,

degree of hardhessthan its upper surface. J. E. KEATING.

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