US942557A - Machine for making skived blanks for heel-counters, &c. - Google Patents

Description

L. L. HARTWELL. E FOR MAKING SKIVED BLANKS FOR HEEL COUNTERS, 6w.

942,557 Patented Dec. 7, 1909. I

a 3 SHEBTS-SHEET 1.

MAGHIN APPLICATION FILED FEB. 26, 1909.

L. L. HARTWBLL.

MACHINE FOR MAKING SKIVED BLANKS FOR HEEL COUNTERS, 6w. APPLICATION FILED FEB. 26, 1909.

Patented Dec. 7, 1909.

3 SHEETSSHEET 2.

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L. L. HABTWELL. MACHINE FOR MAKING SKIVED BLANKS FOR HEEL COUNTERS, 6m 7 APPLIGATION FILED FEB. 26, 1909.

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UNlTFilD PATENT LESLIE L. HARTWELL, 0F REFEREE, MASSACHUSETTS, ASSIGNOE TO ARTHUR G. 'WALTON, 0F WAKEFIELD, IVIASE'ACHUSETTS.

MACHINE FOR MAKING SKIVED BLANKS FOR HEEL-COUNTERS, 85c.

oases? Application filed February 26, 1909.

To all whom it may concern:

Be it known that i, LnsLrn L. Han'rwnLL, of Revere, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Machines for Making Skived Blanks for eel- Counters, &c of which the following is a specification.

This invention relates to machines for making skived or partially skived blanks, suitable for heel counters, etc., by severing a blank sheet longitudinally into two parts, the severing out being inclined relatively to the sides of the sheet, so that each part, which constitutes a complete blank, has a skived longitudinal edge formed by the cutter which severs the blank sheet.

The invention consists in the improvements hereinafter described and claimed relating to a machine for making blanks in the general manner indicated.

Of the accompanying drawings, forming a part of this specificatiom Figure 1 represents a front elevation of a blank-making machine embodying my invention. Fig. 2 represents a section on line 2 2 of Fig. 1, and a plan view of the parts below said line. Fig. 3 represents a section on line 3'-3 of Fig. 1, and an elevation of the parts at the left of said line. Fig. i represents a section on line l i of Fig. 1. Fig. 5 represents atransverse section of a portion of the sheet supporting bed, a blank sheet thereon, and a presser-foot which clamps the sheet on the bed, and a side elevation of the cutter. Fig. 6 represents a section on line 6-6 of 1.

T he same reference charactersindicate the same parts in all the figures.

In the drawings,12 represents a cutter which is adapted to act in a given plane, the cutter being preferably a circular saw, as shown in Fig. 2, and arranged in a horizontal plane. The cutter is affixed to a vertical shaft or spindle 1.3, and is driven by power applied in any suitable way, such as by a driving belt 14 engaging a pulley 15 affixed to the shaft 13.

16 represents a work-supporting bed which is adapted to support a blank sheet 17 in an inclined position relatively to the cutter, the relative arrangement of the bed and cut ter being such that when the bed is moved in the direction indicated by the arrow in Fig. 2, the cutter will bisect the blank sheet Specification of Letters Patent.

Patented Dec. '2 1909.

Serial No. 480,247.

17 and form a longitudinal cut extending through the sheet from end to end, said out subdividing the sheet into two blanks, each having a skived edge formed by the cutter. The upper surface of the bed is formed to receive a portion of the cutter, as shown in Fig. 5, where 18 represents a longitudinal groove or recess in the upper side of the bed, said recess allowing a portion of the saw to project below the under side of the sheet 17, and thus form a cut extending en tirely through the sheet from the outer to the inner surface thereof.

The bed 16 is movable in dovetail guides 19 affixed to a base 20 which is inclined relatively to the plane of the cutter and imparts the same inclination to the bed. The inclination of the bed and base may be variable, the base being here shown as provided with segmental ribs or rockers 21 which are seated in segmental grooves in fixed crossbars 22 forming a part of the frame of the machine, the rockers 21 being movable in the said seats to vary the inclination of the base and bed, and secured at any desired adjustment by means of set screws 23.

2& represents an elongated pressenfoot which is movable toward and from the bed 16, and is adapted to clamp the blank sheet 17 against the bed during the cutting operation. Mechanism is provided for automatically moving the resser-foot toward and from the bed to cause it to alternately clamp and release the blank sheet. in the embodiment of my invention here shown, the presser-foot is connected by arms 25 with a rock shaft 26 which is j ournaled in bearings 27 afliXed to the bed.

28 represents a lever affixed to the rock shaft and having a trundle roll 29 at its outer end bearing on one of the guides 19. Said guide is provided with a projection 30 having inclined ends 31, 32, said projection being so arranged that when the bed moved forward from the position shown in Fig. 2, to carry the blank sheet toward the saw, the trundle roll 29, which at this point is held by a spring 33 against the forward portion of the guide 19, so that the presserfoot is raised from the bed, first encounters the inclined end 31, and is forced upwardly thereby to move the resser-foot toward the bed and cause it to bear on the blank sheet just before the sheet comes in contact with it as the cutter. The projection 30 holds the presserfoot in its clamping position until the blank sheet has been forced entirely across the cutter, and has been severed into two parts, when the inclined end 32 permits the lever 28 to swing downwardly and thus again raise the presser-foot and release the work.

35, 35 represents a pair of dogs which overhang the bed, and are supported by a resilient arm Said dogs are arranged so that when the bed is projected, their pointed ends will engagethe blank sheet at opposite sides of the line of out, and while offering no obstruction to the forward movement of the blank sheet in the direction indicated by the arrow in Fig. 2, will prevent backward movement or retraction of the severed blanks when the bed is retracted or moved back to the position shown in Fig. 2.

The cutter shaft 13 is journaled in a vertically adjustable bearing 37 which is supported by a fixed housing 38 forming a part of an arm 39 which is connected by bolts 40 and 41 with a fixed arm 42 on the upper portion of the frame of the machine. W hen the bolt 40 is removed, the arm 39 may be swung on the bolt 41, the latter serving as a pivot, thus permitting the cutter 12 to be swung outwardly and upwardly from the bed. The shaft 13 is provided with a bearing nut 43 which is adapted to turn on the upper end of the bearing 37.

A downhold is provided which bears on the cutter 12, and prevents the deflection of the latter, said downhold, as here shown, comprising a holder 44 adjustably secured to a bracket 45 alliXed to the bearing 38, and an anti-friction roll 46 journaled in the holder 44, and in rolling contact with the upper side of the cutter 12. Provision is thus made for preventing the cutter from being deflected from the predetermined plane in which the blank sheet is to be out.

Mechanism is provided for reciprocating the bed 16, said mechanism, as here shown, comprising a disk 47 mounted on a shaft 43, and having a cam groove 49, a rod 50 having a trundle roll 51 engaging said cam groove, a lever 52 pivoted at 53 to a fixed support, and a link 54 connecting one end of the lever with the bed 16. The cam groove 49 is timed to give the bed a relatively slow forward movement from the position shown in Fig. 2 and until the out has been completed through the blank sheet; then a relatively quick return movement, and then to hold the bed at rest for a sufficient period to permit the application of a blank sheetthereto. The portion of the cam groove which holds the bed at rest is the segmental portion between the dotted lines m0c and y-y (Fig. 3), said portion being concentric with the axis of-the disk 47.

Power may be applied to the machine by a :driving belt runningon a driving pulley on a shaft 56, the latter being provided with a worm 57 meshing with a gear 58 on the shaft- 48, The shaft 56 is here shown as provided with a pulley 59 which engages the cutter-driving belt 14. The shaft 48 may be made in independent sections connected by clutch members 60 and 61, the latter being movable by means of a treadle, not shown, through suitable intermediate connections including a connecting rod 62 and a bell-crank lever 63 engaged with the clutch member 61, the arrangement being such that when the treadle is depressed, the clutch members are disconnected, and the rotation of the disk 47 is stopped.

65, 66 represent idle pulleys which guide the driving belt 14.

The bed 16 is provided with suitable adjustable gages 67 and 68 adapted to properly position the blank sheet 17. The presserfoot 24 is yieldingly connected with the arms 25, so that it may conform automatically to the thickness of the blank sheet, the foot being provided with studs 69 which are movable in sockets in the arms 25, and are pressed downwardly by springs 70 (Fig. located in sockets in said arms.

The operation of the machine is as follows lVhen the bed 16 is retracted -to the outer extreme of its movement, as shown in Figs. 2 and 3, it is briefly held in said position by the concentric portion or dwell wy of the cam groove 49, to afford time for the insertion of a blank sheet under the presserfoot, the latter being at this time raised, as shown in Fig. 1. The bed-projecting portion of the cam groove now acts to project the bed, the presser-foot being forced'downwardly against the blank sheet by the in clined end 31 of the projection 3-0, before the advancing end of the sheet encounters the cutter, and held down by the said projection until the sheet has passed entirely across the cutter, and has been completely severed.

The inclined end 32 of the projection permits the depression of the lever 28 and the raising of the presser-foot after the completion of the out. The advancing ends of the blanks are forced under the-dogs 35 and en gaged thereby before the completion of the forward movement of the bed, so that they prevent the blanks from being retracted with the bed. The trundle roll 29 is mounted in a swinging bearing piece 71 which is pivoted to the lever 28, and is adapted to yield during the return movement of the bed, so that the trundle roll rides over the projection 30 without depressing the presserfoot, which remains raised until the bed has been fully retracted and has started on its next forward movement, the inclined end'31 then acting on the trundle roll to again depress the presser-foot. The completed blanks remain in engagement with the dogs 35 during the retraction of the bed, and are I forced out from under the dogs by the advancing end of the next blank sheet.

I claim:

1. A blank making machine comprising a cutter adapted to act in a given plane, a movable work-supporting bed which is inclined relatively to the plane of the cutter, a presser-foot adapted to clamp a blank sheet against said bed, automatic means for raising and depressing the presser-foot to alternately clamp and release the blank sheet, and means for varying the inclination of the bed.

2. A blank making machine comprising a cutter adapted to act in a given plane, a movable work-supporting bed which is inclined relatively to the plane of the cutter, a presser-foot adapted to clamp a blank sheet against the bed, and means operated by movements of the bed for moving the presser-foot toward and from the bed.

A, blank making machine comprising a cutter adapted to act in a given plane, a movable work-supporting bed which is inclined relatively to the plane of the cutter, a presser-foot adapted to clamp a blank sheet a ainst the bed, a lever connected with the pr ser-foot, and a fired track against which said lever is yieldingly pressed, said track having alternating depressed and I raised portions adapted to support the lever and presser-foot in difi'erent positions.

4:. A. blank making machine comprising a cutter adapted to act in a given plane, a work-supporting bed which is inclined relatively to the plane of the cutter, means for reciprocating the bed, a presser-foot movable toward and from the bed and normally separated therefrom, and means operated by movements of the bed for moving the presser-foot relatively to the bed to clamp and release the sheet.

A blank making machine comprising a cutter adapted to act in a given plane, a work-supporting bed which is inclined relatively to the plane of the cutter, means for reciprocating the bed, means for securing a blank sheet to the bed, and means for en gaging the severed and projected blanks and preventing their retraction with the bed.

6. A blank making machine comprising a cutter adapted to act in a given plane, a welk-supporting bed which is inclined relatively to the plane of the cutter, means for reciprocating the bed, means for securing a blank sheet to the bed, and a pair of springsupported dogs adapted to engage the severed and projected blanks and prevent their retraction with the bed.

7. A blank making machine comprising a cutter shaft, a rotary cutter ai'iixed to the lower end of the shaft, and a bed movable under the cutter and inclined laterally relatively thereto, the relative arrangement of the bed and cutter being such that a movement of the bed causes the cutter to sever the sheet longitudinally into two skived lanks.

8. A blank making machine comprising a cutter shaft, a rotary cutter aflixed to the lower end of the shaft,abed movable under the cutter and inclined laterally relatively thereto, the relative arrangement of the bed and cutter being such that a movement of the bed causes the cutter to sever the sheet longitudinally into two skived blanks, and a downhold bearing on the cutter to prevent outward deflection thereof from the bed.

9. A blank making machine comprising a cutter shaft, a rotary cutter affixed to the lower end of the shaft, a bed movable under the cutter and inclined laterally relatively thereto, the relative arrangement of the bed and cutter being such that a movement of the bed causes the cutter to sever the sheet longitudinally into two skived blanks, and a holder secured to a fixed support adjacent to the cutter and having an antifriction roll bearing on the cutter.

10. .fr blank making machine comprising a cutter shaft, a rotary cutter atlixed to the lower end of the shaft, a bed movable under the cutter and inclined laterally relatively thereto, the relative arrangement of the bed and cutter being such that a movement of the bed causes the cutter to sever the sheet longitudinally into two skived blanks, and a movable support for the cutter shaft, whereby it may be moved to withdraw the cutter from its operative relation to the bed.

11. A. blank making machine comprising a cutter shaft, a rotary cutter affixed to the lower end of the shaft, a bed movable under the cutter and inclined laterally relatively thereto, the relative arrangement of the bed and cutter being such that a movement of the bed causes the cutter to sever the sheet longitudinally into two skived blanks, an arm pivotally connected with the frame of the machine and having bearings for the cutter shaft, said arm being adapted to swing the cutter into and out of its operative relation to the bed, and means for securing the arm with the cutter in its operative position.

In testimony whereof I have aiiiXed my signature, in presence of two witnesses.

LESLIE L. HAR'TXVELL.

Witnesses A. D. GRovER, P. N. Pnzznrrr.

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