US1750718A - Scoring wheel - Google Patents

Description

March 18 1930. c. s. LENs'roN SCORING WHEEL Filed sept. 1e. 1927 Patented Mar. 18, 1930 UNITED STATES `PATENT OFFICE CHARLES S. LENSTON, F WORCESTER, MASSACHUSETTS, ASSIGNOR TO HOBBS MANU- d FACTUBING COMPANY, 0F WORCESTER,MASSACHUSETTS, A CORPORATION 0F MAS- sAcHUsETTs SCORING WHEEL Application filed September 16, 1927. Serial No. 220,004.

This invention relates to a rotary scorer for use in connection with a roll for creasing, slitting, or scoring lcard-board or other material of a similar kind and to the means for supporting it. This is an improvement over my application filed November 8, 1926, Serial The principal objects of the invention are to rovide a mounting for the scorer in which si e play is practically impossible; to provide a bearing therefor which is accessible from the side; and to provide an improved scorer for creasing purposes.

Other objects and advantages of 'the invention will appear hereinafter.

Reference is to be had to the accompanyingdrawings in which Fig. 1 is a side view of the supporting means for the creasing or scoring wheel; Fig. 2 is a sectional view of the same on the line 2 2 of Fi 1;

Fig. 3 is a simi ar sectional view on enlarged scale; and

Fig. 4 is a central sectional View of a modified support for the scorer.

The scorer bar 10 and scoring roll 11 are of the usual construction well understood in this art. The bar is provided with a dovetailed projection 12 extending longitudinally and the body of the scorer support 13 is secured on this dove-tail extension at any place along the bar by means of a gib 14 and holding screw 15. This xes this body in position and it will be understood that as many of these are placed along the bar transversely as may be desired to produce the required number of creases, grooves, slits or rows of indentations in the card-board C which constitutes the Work.

The support 13 is provided with a longitudinal passage or opening at the bottom eX- tendin upwardly and with side recesses 36 extending up to the center of the scorer 16 itself. Inside the longitudinal slot in the bottom of the support 13 are two plates 19 which constitute the scorer holder and have a sliding lit between the cheeks constituting the opposite sides of the passage in the support 13 for preventing side pla It is to'be understood that these two p ates 19, with the scorer between them and the parts at the center thereof are pivoted on a pin 18. This holder is moved up in the opening of the support 13 about the pivot and fastened. On account of the fitting of the plates 19 against the cheeks, the scorer can have no side play.

The holder 19, consisting of these two plates, is perforated at the center to receive a bolt 21 passing through it. The head of the bolt on one end and the nut on the screw at the other are located in the side recesses 36 which extend all the Way through the cheeks of the support 13 where the bolt and nut can be reached from the outside.

The scorer 16 is supported by a ball bearing on this bolt. The inner race 2O of the ball bearingis wider than the outer race 20a. It is forced, by the tightening up of the nut 22, against the inner sides of the two plates 19,

constituting the holder, and ,fastened thereto.

On account of the outer race 20 being narroWer than the scorer and than the inner race, free rotation of the scorer is provided Vwithout any possibility of clamping or of jamming the outer race. The outer race of course fits tightly and positively in the bore of the circular scorer 16.

The scorer itself, as shown in Figs. 2 and 3, is a circular creasing wheel. It is provided around-its circumference with slanting surfaces 33 and 34, preferably made at about 300 to the plane of the scorer. These conical surfaces are not allowed to intersect each other, but the scorer is turned off to a substantially cylindrical surface 35 intersecting both, thus forming a scoring surface having two oblique angles at the ends of a cylindrical surface. This scorer is shown in these figures as formed with two of these formations or circular scoring ribs.

In operation these are applied to the cardboard and form two creases at a certain distance apart, which is calculated according to the character of the material to be operated upon, so that these two creases permit of bending' the card-board to form a right angled corner and and reduce the liability of the card-board cracking anywhere along the corner. i

In the form shown in Fig. 4:, I have illustrated an offset Wheel for scoring and slitting in Which the construct-ion is substantially the same as above described, except that the scorer is located at one side of the holder 123a instead of in the center. In this case this holder is modified by having its opening on one side instead of through the center and the only holder is a single plate 19a. The scorer 16 is also offset with its edge at one Side but the holding bolt 2l,V its nut Q2 andthe ballbearing are the same and apportioned in the same Way to get the same results. The members 16 and 16L are for scoring. commonly called scoring cutters.

From this it will be seen that the scorer is so mounted as toavoid-:friction inthe operation both at its bearing and sides and that, `when,

itis held in position inthe bladesupport, it isincapahle of Wabbhng or side motion and of rubbing against the sides to introduce an',v lriction. The specific forni of creasing scorer isalso a .feature of importance in this invention.

Although l have illustrated vand described onljY two forms of the invent-ion,-I am aware of thelfact-that other modifications-can be inadetherein by any-person skilled in the art Without departing from-the scope of the invention as expressed in the claims.

Therefore, l do notwvish'to be limited ,to all the details of construction herein shoWnand described, but ivhatlr do claim is:

l.. ln al supporting device for a circular scorer, the combination With` a support having r '.infopening providing opposite cheeks, a holderarranged to iitagainst the inner sides ofthe opposite cheeks', 'a ;ball bearinghaving an .inner race justfitting-in the holdernnd an Vouter race narrower-thantheinner race, and a circular yscorer fixed to-said outer race.

2. In v4a supporting device for .-a circular scorer, the combination With a support having annopeningvr extending upfrom the bottom providing opposite cheeks, a holder comprising tivoplatesarranged to itffagainstthel inner sides of the opposite cheeks, a ball-bearing having aninner race ust fittingfbetween said two plates in the holder and an outer race narroivei'.- vthan -the inner race so as to be adapted to rotate WithoutA friction 'between Y thetivo plates, and a circular scorer lixed to said outer race.

3.V In a 4ball bearingsupporbfor a circular scorer, the combination of a-holder, ball .bearing having an inner race abutting atfboth ends against the holder and provided with an outer race thinner than the inner race to prevent rubbingand friction, and a circular scoreriiXed to the outerrace, the outer race being narrower than the scorer.

el. In a ball bearing support for a circular scoreigthe combination of a boltand nut, a holder -through Which-fthe boltv passes and against which the nut is adapted to be tightofrened, a ball bearing having an inner race They are of the type opening extending up fromfthe'.bottmln,-r` ofa holder fitting again'stthe-oppositevallslof said opening, a bolt extending` through-"the holder, said support having recesses on its opposite sides for receiving the bolt head and its nut in accessible*` position, a ball bearing on lthf bolt, vand ,a rotary .scorer ,carried by. ;the

Intest-ianony whereoffjhave hereunto affixed my, signature.

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