US1238088A - Trimming and splitting machine. - Google Patents

Description

un sTaTns raTnivT @WWE 'WLLIAM IBAX'IEIR,` 0F BEVERLY, MASSACHUSETTS, ASSXGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, N'ElV JERSEY, A CGRPORATION `0F NEW JERSEY.

` To all whom t may concern.'

in the several figures.`

\ rllhis invention relates to machines for use i `in the manufacture of bootsand shoes and is herein set forth in connection with a machinefor cutting from a sheet of leatherboard or similar material a strip `of desired width and for splittingthe strip s0 cut into two symmetrical portions irrespective of variations'in the thickness of the strip, the illus trative machine being an improvement upon the machine shown in United "States `Patent to Benjamin, No. 1,048,27 8.

`In machines f of rthis type the stock is fed to an y,inclined knife which is so connected with one of the rolls that its angle varies `with the distance Vbetween said rolls and the strip of stock is split diagonally into two symmetrical portions;y If the machine-is set to split astripthe width of which is equal to the width ofthe feed rolls and it is desired to split a narrower strip, some provision should befmade forA permitting the angular `inclination of the knife to be increased. If no such provision were made adjustment ofthe knife to increase its angular inclination would be prevented by reason of contact by the knife with the end of one of the vfeedfrolls since the edge of the knife is necessarily located close to the bite of said rolls. @ne object of the present invention is to provide a feed roll the length of which may be changed topermit angular' adjustment of 'the knife.` yTo this end one feature of theinv'ention comprises,in a machine of the class described, a pair of feed rolls and an inclined splitting knife, one of said rolls having removable and replaceable sections. j

It is customary to trim or ycut the strip, which is to be split diagonally,y from a sheet of stock; and inthe patented machine a fixed trimmingknife is used. Another feature `of the invention comprises `a pair of feed rolls, a pair of shears for cutting a strip i Specification of Letters Patent.

.TRIMMING AND SPLITTIN'G MACHINE.

Patented aug. 2s, mit.

Application inea :ranuaiy 15, 191e. serial no. 72,273.

from a piece of stock presented to said rolls, and means for'splitting said strip, one of said rolls having removable and replaceable sections. 'W'ith ythis construction it is possible' to cut off and split stripsof different widths without disturbing the cooperative relation of the shear members.

These and other features of the invention, including certain details of construction and combinations of parts, will be set forth in connection with an illustrative machine and pointed out in the appended claims.

Referring now to the accompanying drawings,-

Figure 1 is a side elevation of Va machine in which the present invention is embodied;

Fig. 2 isa detail perspective of the trimming and splitting mechanism;

Fig. 3 is `a detail elevation of the feed rolls and splitting knife adjusted to split a strip the width of which is equal to the width of the rolls;

Fig. l is a plan of the upper roll and the edge gage, and

Fig. 5 isa detail elevation similar to lFig. Sfbut showing the rolls and knife in position to operate upon a narrower strip of stock,

the upper roll having been shortened by extent of the downward movement of the Y upper roll. The splitting knife 13 `has a rounded edge fitting in a rounded socket in a bracket 15, the opposite edge beingsupported by a carrier 17 pivoted to one end of a lever 19 the other end of which is pivf oted at 21 to the bracket 7. A fulcrum block 23 located ina slot in the lever 19 may be adjusted by turning the screw`25 whereby the initial angular position of the knife 13 may be adjusted. In front of the feed rolls is a table 27 having a dovetailed slot 29 to receive aslide 8l which is fast to an edge gage 33. A screw 35 holds the edge gage in adjusted position, and a guard 37 4is carried by said edge gage. As/bestshown in Fig.

3, the angular movement of the knife takes place about an axis which coincides with ya median line through the outer edge of the knife and consequently the outer corner of the "cutting ledge of the knife remains stationary. As thus far described the present machine is identical with that of thefpatent and no further detailed description of its construction and inode of operation will be given. t l t In the machine of the patent the upper roll is splined to its shaft and may be adjusted longitudinally thereof, said roll being provided with grooves to receive the trimming knife in the different adjusted positions of the roll. In the present machine the upper roll 1 has an inner portion 101 of reduced diameter to which are splined removable sections 201, the innermost section being provided with a groove 39 to receive a finger 41 formed upon a split member 43 which be clamped by a screw bolt 45 in any desired position on the guard 37. When therefore it is desired to shorten this roll one or more of the sections may be removed entirely or removed and'replaced by a thinner one.v The edge gage 33 is then moved to the left until the gapl caused by such removal or replacement is closed, the roll then having the appearance shown in Fig. 5. After the roll has been shortened the screw 25 is manipulated to increase the angular inclination of the knife 13 as is also shown in Fig. 5. For convenience the process of shortening the roll has been described but it-will be obvious that the length of the roll may be increased by reversing the process.

In the patented machine, as has been eX,- plained, a'drag knife is used to lcut or trim the strip, from the piece of stock prior-to the splitting operation. In the illustrative machine a pair of corrugated shear members 45,47 are provided. These rotaryfshear members are held from rotation with respect to` the rolls 1 'and 3 by pins 49 and are clamped to the end of said rolls by nuts 5.1. The point at which the Shears 457.47 out the stock should lie substantially in the axis aboutl which theknife 13 is angularlyl movable as shown in Figs. 3 and 5. In order to permit this relation ofparts to be secured and maintained each roll 1 and 3 is secured toy itsshaft by a spline (not shown) Vand is provided at its inner end with three adjusting screws 55 the heads of which bear against collars 5.7 on the respective shafts. To adjust'the rolls they are rst removed from their shafts, then, by a method of triall and error which may involve putting on and taking off the lower roll one or more times, the screws 55 of said roll are adjusted until when the heads of said screws are in contact withy their respective collar 57 the upper edge of the shear member 47 is substantially ward, 'Ihe corrugated shears seize the forward edge of the'stock and tend to draw it toward the rolls at the same time ycutting from the sheet a strip the width of which depends upon the position of the edge gage 33. The rolls seize ther-strip and force it against the knife 13, the inclination of the knife varying at all times with the thickness oflthe strip at the point engaged by the feed ro s.

i Although the invention has been set forth in connection with a particular inachineit should be understoodthat the invention is fr not limited in the scope of its application to the particular machine shown and described, Having thus described my invention, I claim as new and desire to secure by Let` ters Patent: V

l 1. A machineof the class described, having, in Combination, a pair of feed rolls, a pairl of rotary shears carried by said rolls, one of said rolls comprising reijnovable and replaceable sections whereby the effective length of said last-named roll may be changed while maintaining the cooperative relation of the shear members, anedge gage,

and a connectionvbetween said gage and one of they sections such that adjustment of the gage and the connectedsection takepljace together.

9.-. A machine of the class described, hav-l ing, in combination, a pair of feed rolls, an

inclinedsplitting knife the angle of inclination of which varies with the distance between said rolls, one of said rolls comprising removableand replaceable sections, ,an adjustable edge gage for guiding the stock to the knife, and' a connection' between said gage and one of said sections. Y i l 3. A machine of the class'described, having, in combination, a pair of feed rolls, ro-

tary shears carried by said rolls, and an inclined knife ythe angle of inclinationy of which varies with variations in the distance betweenk said'rolls,1 one of said rolls com-y prising removable and replaceable sections vwhereby the effective length of said lastnanied roll may be changed while maintaining the cooperative relation of the shear members. f

4. A machine of the class described, having, in combination, a pair of feed rolls, a f knife to which the stock is fed by said rolls rotary shears carried by said rolls whereby a strip is removed by said shears from a piece of stock fed to said rolls and said strip is split by said knife, one of said rolls comprising removable and replaceable sections.

5. A machine of the class described, having, in combination, a pair of feed rolls, an inclined knife to which the stock is fed by said rolls, and rotary shears carried by said rolls whereby a strip is removed by said shears from a piece of stock fed to said rolls and said strip is split on an angle by said knife, one of said rolls comprising removable and replaceable sections.

6. A machine of the class described having, in combination, a pair of feed rolls, shafts on which said rolls are mounted, means for cutting a strip from a piece of stock presented tosaid rolls5 and means for splitting said strip, one of said rolls comprising removableand replaceable sections splined to the shaft upon which they are mounted.

7. A machine of the class described having, in Combination, a pair of feed rolls, a pair of shearsfor cutting a strip from a piece of stock presented to said rolls, and means for splitting said strip, one of said rolls comprising removable and replaceable sections.

8. A machine of the class described having, in combination, a pair of feed rolls, rotary shears carried by said rolls, an inclined knife the angle of inclination of which varies with variations in the distance between said rolls, one of said rolls comprising removable and replaceable sections whereby the effective length of said lastnamed roll may be changed While maintaining the lcoperative relation of the shear members, an adjustable edge gage the position of which determines the width of the strip removed from a piece of stock by said shears, and a connection between said gage and one of the sections of said sectional roll such that adjustment of the gage and the connected section take place together.

9. A machine of the class described having, in combination, a pair of feed rolls, means for cutting a strip from a piece of stock presented to said rolls, means for splitting said strip, one of said rolls comprising removable and replaceable sections, an adjustable edge gage, the position of which determines the width of the strip removed and a connection between said gage and one of the sections of said sectional roll such that adjustment of the gage and connected section take place together.

10. A machine of the class described having, in combination, a pair of feed rolls, a pair of shears for cutting a strip from a piece of stock presented to said rolls, means for splitting said strip, one of said rolls comprising removable and replaceable seetions, an adjustable edge gage, the position of which determines the width of the strip removed,- and a connection between said. gage and one of the sections of said sectional roll such that adjustment of the gage and connectedsection take place together.

In testimony whereof I have signed my name to this specification.

WILLAM C. BAXTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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