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D. C. SUMNER.
No. . Reissued May 4 1880.
N. PETERS PHOTO-LRXOORAPHER WASNINOTON O.C.
UNITED STATES PATENT OFFICE.
DWIGHT C. SUMNER OF MVIILLBURY MASSACHUSETTS.
SPECIFICATION forming part of Reissued Letters Patent No. dated May 4 1880.
To all whom it may concern: the edges of which blades have cutting-sections d and notches d'. The cutting-sections d of the several blades I arrange around the cylinder in oblique order so that if a circle 55 be drawn around the cylinder through the center of a cutting-section on one of the blades the center of the sections in the path of the circle on the adjoining blades will fall out of the line of said circle so that each succeeding 6o section is offset from the line of revolution of the one in advance of it. In other words the cutting-sections on one blade are followed in oblique direction by those on the ne}i.. blade. By this arrangement of the cutting-sections d 65 the shearing action against the ledger-blade B effects the production of oblique or diagonal lines in the pile or face fibers of the cloth E as it is fed forward over the straight cloth-rest F the inclination of the diagonal depending 7o on the relative speed of the shearing and feeding mechanism and the lateral offset of the cutting-sections.
Right-hand or left-hand diagonal lines may be formed accordingly as the cutting-sections 75 d are set toward the right-hand or left-hand end of the blade-cylinder.
The cutting points or sections d may be formed in continuous series throughout the entire length of the cylinder or on certain 8o definite portions of its length as desired for producing long or short diagonal lines on the surface of the cloth.
PIain diagonal as shown in Fig. 4 is termed
by arranging the cutting-sections d in con- 85 tindous helical or spiral series from end to end of the cylinder.
By forming the sections d in alternating right and left hand helical or zigzag portions
of determined lengths along the blade-cylin- 90 der alternating diagonals as shown in Fig. 5 may be produced while by forming the sections d in spiral or helical series only on occasional portions of the cylinder or revolver
C the diagonal is produced as occasional 95 stripes as illustrated in Fig. 6.
The diagonal ornamentation formed by the arrangement of the cutting-sections circumferentially (partially or entirely) in helical or-
der is susceptible of very fine and delicate de- Ioo lineation on the goods and produces a very desirable finish at a slight expense while the
Be it known that I DWIGHT C. SUMNER of Millbury in the county of Worcester and State of Massachusetts have invented a new
5 and useful Improvement in Cloth - Shearing Machines of which the following is a specification.
This invention relates to an improvement in mechanism for finishing that class of cloth
io or pile fabric wherein the ornamentation is effected by shearing; and my invention consists first in a cylinder or revolver for cloth-shearing machines having sectional recessed or notched cutting-blades the cutting-sec-
15 tions whereof are arranged around the cylinder in such order that every cutting-section is overlapped laterally by the section next following or in other words the sections in-stead of being placed in vertical rows or rings
20 around the cylinder are placed the one obliquely above or behind the other thus producing novel results.
The invention also consists in the combination with the ledger-blade and cloth-rest in a
25 cloth-shearing machine of a cylinder or revolver having notched or recessed shearing-blades with cutting points or surfaces disposed in the above-mentioned oblique order around said cylinder for the purpose herein-
30 after explained.
This improvement is applicable to ordinary cloth-shearing machines and it will be understood that portions of the mechanism not herein shown or described may be constructed
35 and operated in the usual manner.
In the accompanying drawings Figure 1 rep-resents a front view of such parts of a cloth-shearing machine as are necessary to illustrate the nature of my improvements. Fig. 2 is a
40 sectional diagram showing the relative positions of the working parts in the machine. Fig. 3 is a cutter-face diagram showing the man^er in which the cutting-sections of the blat.es follow each other; and Figs. 4 5 and
45 6 illustrate styles of finish on the surface of
cloth produced by my invention.
..teferring to the drawings A denotes the adjustable top frame of a shearing-machine. B indicates the stationary ledger-blade. C
5o represents the revolver or blade cylinder provided with the radiating blades 1 2 3 4 5 6 7
style of the diagonal design or patterns which can be produced by mechanism such as herein described admits of considerable variety since the patterns may be varied by a modification
5 in the pitch or direction of the line on which the cutting points or sections are arranged by changing the width or relative sizes of the cutting-sections and recesses and by variations in the movement of the cloth past the
I am aware that diagonal lines have heretofore been made in the pile of fabrics by shearing with ordinary blades by the aid of a spiral revolving cloth-rest in place of the straight
15 rest F and I do not therefore make claim broadly to the production of diagonal lines.
1. A revolver or blade-cylinder for cloth-
shearing machines having notched cutting-
$o blades the cutting-sections whereof are ar-
ranged circumferentially in oblique order to produce oblique or diagonal furrows substantially as described.
2. In a cloth-shearing machine the combination with the ledger-blade and cloth-rest 25 of a cylinder the blades of which are notched as described whereby a series of cutting points or sections are arranged in oblique order around the said cylinder substantially as de-scribed. 30
3. A cylinder for shearing-machines the blades of which are notched as described and have cutting-sections developed around the cylinder in helical order substantially as de-scribed.
DWIGHT C. SUMNER.
ISAAC D. GoULDING GEORGE W. PARSONS.