US514364A - Sole-slitting machine - Google Patents

Description

(No Model.)

L. P. HAWKINS.

SOLE SLITTING MACHINE.

N0. 514,36 L Patented Feb. 6, 1894.

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UNITED STATES.

PATENT OFFICE.

LORENZO P, HAWKINS, OF DEERING, AS SIGNOR TO THE GOODYEAR SHOE MACHINERY COMPANY, OF PORTLAND, MAINE.

SOLE-SLITTING MACHINE.

SPECIFICATION formingpart of Letters'Patent No. 514,364, dated February 6, 1894.

Application tiled May 6, 1893. Serial No. 473,193. (No model.)

T0 or whom it may concern.-

Be it known that I, Lonnnzo P. HAWKINs, of Deering, county of Cumberland, State of Maine, have invented an Improvement in Inner-Sole-Slitting Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

In the manufacture of boots and shoes it is found desirable to slit the inner soles transversely in thoseportions where the shoe is bent in walking. To perform this operation expeditiously and economically, I have de vised the machine to be herein described, it having cutters so arranged as to out two or more rows of slits, the ends of the slits in one row preferably overlapping the ends of the slits in another row.

Figure 1, in front elevation, represents a machine containing my present invention. Fig. 2, a top or plan View of the sole support and the stripper plates; Fig. 3, a view looking upwardly from the line 50-90, said View being chiefly to show the cutters, the carriages to which they are attached, and their adjusting devices, and Fig. 4 shows a portion of a sole as it may be 'slitted with my improvedtmachine.

In the drawings, A represents a suitable table, from which rises a block A having suitable cars A to which is secured by bolts B the ears B of a suitable bed B which thus becomes fixed to the table; This bed has at its upper side a suitable groove or way, preferably dovetailed in cross section, as shown in Fig. 1, which receives a cutting-plate a upon which the sole to be out is laid, one end of said sole being pushed in against the registerin g gages a a, the cutting plate being free to he slid out and into the groove in the bed so as to put the part of the sole 3 who slitted, as at 2, 3, in under the cutter blades Z). The bed I) has mounted on it, preferably in an adjustable manner by screws 0, a stripper 0 shown as having a series of fingers between which are slots for the passage of the blades b, the screws 0 entering slots 0' in the shanks of the strippers, so that said strippers may be adjusted as required to put them in proper position with relation to the blades 12, and the portions of the sole to be out. Preferably the shanks of the strippers will be provided at their under sides with a channel or way for the reception of the shank of an edge gage d, the front end of which is shown by dotted or inwardly from its dotted line position, as

it may be by releasing set screw2, serving as a gage for the edge of the sole, the shank of the edge gage having a suitable slot 3. The upright part of the frame-work has at its front end a suitable hearing A", in which is fitted to slide a plunger D to which is suitably jointed the rod D of an eccentric strap D embracing a proper eccentric D on the end of a power actuated shaft D, said shaft, eccentric, link, plunger and bearing being common to power actuated hammers or pressers, so need not be herein further described. The lower end of the plunger has clamped upon it by clamp screw E a block or head E, said head being suitably shaped at its under side to receive like carriages E E entered the one'by a right and the other by a left hand screw-thread carried by adjusting screws E E each of said screws having an annular groove about it which receives a portion of the head E, so that the said screws, while they are capable of being rotated, cannot move longitudinally, and consequently the carriages E E will be moved in suitable guiding grooves of the head, and by these the knives b, I), attached to said carriages, may be made to approach toward or be separated one from the other, according as it is desired that the cuts or slits made in eithershall overlap one the other more or less or be removed from each other so as to make slits alternately in different lines, dodging slits.

I have attached to the carriages certain indicating fingers e which co-operate with a scale 6 cut or marked on the head E, so that when the adjusting devices are turned, the positions of the acting ends of the cutters may be assured equally distant, or at the desired distance from the center or zero line of the scale.

With a sole placed upon the cutting-plate a under the strippers O, the plunger will be moved to descend, and the blades b will descend through the slots in the strippers and cut into and through the sole or for the dis tance desired, the sole so out being made flexible, so that it will bend with greater ease and adapt itself to the foot in walking.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a machine for slitting leather the followinginstrumentalities,viz:acuttingplate; strippers, and two series of blades set one series with relation to the other series to out two rows of slits, the slits of one row being in line with the spaces between the slits of the other row, and with devices to adjust the separate rows of blades, and the carriages to which they are attached with relation to each other to place the rows of slits made by the blades more or less close together, substantially as described.

2. In a machine for slitting leather, the followinginstrnmentalities,viz:acnttingplate; strippers, and two series of blades set one series with relation to the other to out two rows of slits, the slits of one row being in line with the spaces between the slits of the other row, and with devices to adjust the said blades one set toward or from the other set, and devices to adjust the strippers, substantially as described.

3. In a machine for slitting soles, a cutting plate having gaged projections, and made movable under series of cutters, combined with two stripper-plates, and with two sets of cutters the blades of one set being arranged in line with the spaces between the blades of the other set, carriages to which the said blades are attached, and adjusting devices by which to adjust the said sets of blades, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' LORENZO P. HAWVKINS.

Witnesses:

STEPHEN O. PERRY, JAMES A. OONNELLAN.

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