US1399937A

US1399937A - Cutting-block

Info

Publication number: US1399937A
Application number: US393936A
Authority: US
Inventors: Ansel C Denning
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-07-03
Filing date: 1920-07-03
Publication date: 1921-12-13
Anticipated expiration: 1938-12-13

Description

Patented Dec. 13, 1921.

$3313 his ANSEL C. DENNING, F JOHNSON QITY, NEW YORK.

CUTTING-BLQCK.

Application .filed July 3,

To all whom it may concern.

Be it known that I, ANSEL C. DENNING, a

citizen of the United States, residing at Johnson City, New York, have invented certain new and useful Improvements in Cutting-Blocks, of which the following is a clear, full,and exact description. I

' This invention relates to cutting'blocks for use with sharp-edged knives or dies, as, for

example, in the cutting of the sole, heel, and

' upper blanks of shoes in the process of shoe- -making and for similar blank cutting work. Prior to my invention, cutting blocks for the aforementioned uses have been made alunsuccessful attempts have been madelto' 'substitute,other known materials, to devise substitute" compositions of material and) I even so to modify the cutting process and init the use of other with the the cutting means and machines as to per-- materials. Wooden cutblocks, usually formed from sections'of sugar maple or other wood having similar characteristics, with the grain on, end, are ,quite satisfactory inuse when'the cutting surface is freshly dressed, so that it lies 1in one plane, the arrangement of the sections grain onend being particularly advantageous in that the edge oredges of the cutting knife or die may enter between the fibers ofthe wood and effect a substantially shearing out of the material. Continued use of the wooden cutting blocks, however, resultsfin the cutting and breaking of the fibers, due] to the fact that the edgeof the knife or die does not always enter the block exactly in the direction of the grain of the wood, thus cutting across the grain and severing portions of the fibers. After a time the wooden block becomes hollowed out in the regionwhere the principal cutting has taken place, the surface becomes uneven and rough, and the block must be redressed to restore its surface before satisfactory cuttin canbe effected upon it.

ecause of the scarcity and increasing cost of the most desirable woods for cutting blocks and thenecessity for frequent redressin of'these bl0cks,a somewhat tedi- -ous an expensive operation since it involves planing across t e grain,a cutting block material has long been song ht which would furnish a satisfaeto cuttmg surface, that is,one into which t e cutting edge ofthe knife or die could readilybe forced a suflicient distance to insure a clean cutting of the Specification of Letters Pate most exclusively of wood, although numerous machines l body of thenuttin'g block is made Patented Dem-1 3, 1921 1920. Serial No. 393,936.

blank but which would nevertheless'resist better than wood the tendency of the 'knife or dle to cut out sections of the material of the block. The provision of a cutting block? having its cutting material is the general object of the presentinvention. Moreover, the invention aims to rovide acutting block having its cutting edy formed for the most part of waste products and which, by reason of its rela tivelylow original cost and by reason of its greater durability and its less frequent need of resurfacing, will be relatively more economical than wood,

Cutting blocks having the cutting body lcomp'ositlon hereinafter described and of the .iconstruction shown and described have substant1ally-met the requirements above enu- "merated and have now goneinto extensive tingjijblocks employed with beam presses, dlnklngmachines and other blank 1, 1n the accompanying drawing, a cutting block embodying the invention is illustrated; I have founda suitable ,composition of mate- 60 body composed of such a cutting used in the manufacture of shoes.

rial for the sections from which thenutting \stituted by equal parts of, rags, preferably cotton rags, 'andtannery waste, preferably chrome leather trimmings. In the formation of the sections,

"to'be con- I a mixture of substan-' tially equal arts of the cotton ra s and the chrome leat er trimmings is pu ped in a beatin' engine and is then run into the form of a sleet on the regular cylinder wet ma- Ichine used in pa r making. After the board or sheet is 't us formed, itis cut into sections'2 having the cross-sectional dimens'ions of the cutting block, as shown in the eecompanying drawings. These sections are then glued together the desired len the block is sub ected to very heavy pressure on its ends.

until a block body of To insure support of thesectionsagainst vertical thrust when the block is reversed after one of'its surfaces has become more or less hollowed from use, thefsideedges ofthe sections 2 are provided with grooves which th is obtained after which '7 receive iron straps 4; l fitti into said I grooves, these straps having1 ued threaded ends 6 passing throng "cross-pieces '8 Y which are held in position or; the reduced ends e of the straps 4 by nuts 10." Thefblock is preferably provided with wooden ends 12.

15 use,- par;tioularlyin-place of the wooden out which serve as elastic abutments against which the cross-pieces 8 force bearing pieces or clamps 1% when the nuts are screwed tightly against the cross-pieces 8. i

It will be noted that the main body of each strap 4 preferably stops short of the ends of the block, or at least slightly behind the crossieces 8, so as to permit a slight s ring ing 0 the cross-pieces 8 to insure a c amping of the binding irons upon and about the block.

It will be understood that the sections 2 of the block may be formed from sheets of any suitable thickness, I have found that a very satisfactory cutting body of material of this composition can be formed from sheets of approximately one-eighth of an inch in thickness or of slightly more than this thickness. It will be understood, however, that the thickness of the sheets from which the block sections are cut may vary considerably within practical limits.

A block of the foregoing composition and construction has the advantage over wooden blocks that it offers considerably greater re sistance to the penetration of the cutting edge of the knife or die beyond the depth necessary to insure a clean out while permitting readily sui'iicient penetration to in. sure such a clean cut, thus avoiding the ra id wearing away of the surface which ta res place with wooden blocks. Moreover, by reason of the absence of any definite grain, the block does not permit the tipping of the die which sometimes takes place with wooden blocks, owing to uneven resistance of the block to penetration by the cutting edge of the die at different points along this edge or at different points on the surface of the block. Such tipping of the dies with wooden blocks is'one of the causes of the rapid wearing away of the blocks, since the dies then tend to out across the grain of the block,

By reason of the more homogeneous charactor of the composition of the block of this invention and the fact that it permits clean cutting without substantial penetration, the wearing away of the surface is more even and uniform than with the wooden blocks of the prior art, and thus by reason both of the character of the wearing away and of the fact that this wearing away takes place more slowly, resurfacing of the block is required only at very infrequent intervals. whereby the upkeep cost of the blocks is materially less than that of wooden blocks.

nuances face to face with their edges exposed to form the cutting surfaces of the block, said sections being composed of a 1pulped mixture of cotton rags and chrome eather trimmings.

4, A cutting block having its cutting body-- formed of a series of sheet sections placed face to face and united with glue under pressure, the exposed edges of said sections forming the cutting surfaces of the block, and said sections being composed of a pulped mixture of cellulose fiber and leather.

5. A-cutting block having its cutting body formed of a series of sheet sections each extending throughout the transverse dimensions of the blocks and all permanently secured together face to face, said sections being composed of a pulped mixture of cotton rags and chrome leather trimmings.

6. A cutting block having its cutting body formed of relatively thin sheets of a composiiion of cotton and leather, each sheet extending throughout the transverse dimensions of the block and the successive sheets being arranged face to face and glued together, whereby exposed edges of the sheets form the cutting. surfaces of the blocks.

7. A cutting block having its cutting body formed of relatively thin sheets of a composition of cotton and leather, each sheet extending throughout the transverse dimensions of the block and the successive sheets being arranged face to face and glued together, whereby exposed edges ofthe sheets form the cutting surfaces of the block, binding irons recessed into the sides of said block, and means connecting said irons at their ends arranged to exert a block compressing pressure lengthwise of said block.

Signed at Johnson City, N. Y., this 29th day of June, 1920.

ANSEL o. DENNING.

Witnesses:

' N. D, Ives,

A. W. Groves.