US625303A - Walter jackson - Google Patents

Description

No. 625,303. Patented May I6, I899. W. JACKSON.

STITCH WHEELING MACHINE.

(Application filed Jan. 16, 1899.) {No Model.) \2 Shaets-Sheei l.

Patented May l6, I899. W. JACKSON.

STITCH WHEELING MACHINE.

- (Application filed Jan. 16, 1899.)

2 SheetsSheet 2.

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UNITED STATES PATENT OFFICE.

XVALTER JACKSON, OF LEICESTER, ENGLAND, ASSIGNOR OF ONE-HALF TO ALFRED ARTHUR JONES, OF SAME PLACE.

STITCH-WHEELING MACHINE.

SPECIFICATION forming part of Letters Patent No. 625,303, dated May 16, 1899.

Application filed January 16, 1899. Serial No. 702,288. (No model.)

To aZZ whom it may concern.-

Be it known that LWALTER Jackson, a sub ject of the Queen of Great Britain, residing at Leicester, England, have invented certain new and useful Improvements in Stitch- W'heeling Machines, (for which Letters Patent have been applied for in Great Britain,N0. 11,024, dated May 23, 1898,) of which the following is a specification.

This invention relates to stitch-wheeling machines for use in the manufacture of boots and shoes, and has special reference to the type of machine in which the stitch-wheel is reciprocated to and fro horizontally when performing the stitch-wheeling operation.

The invention comprises certain improvements in the construction of the machine, all of which are hereinafter fully set forth, and specifically indicated in the claims at the end of this specification.

Referring to the accompanying drawings, Figure lis a plan of a stitch-wheeling machine constructed in accordance with this invention. Fig. 2 is a view, partly in side elevation and partly in vertical section, of the machine with the lower part of the standard and pedal connections omitted. Fig. 3 is a central vertical section of the work-support and its adjustments. Fig. 4 is a detail of the eccentric, connecting-rod, and reciprocatory tool-carrying slide.

Arepresents the standard of the machine, at the upper end of which is a table A, secured thereto by screw-bolts A At one end of the said table there are bearings A A in which is located the driving-shaft B, carrying on one end a driving-pulley B, the boss of which extends to close against the bearing A and on the other end a collar B screwed thereon and flush with the bearing A so that any endwise movement of the said shaft is obviated. Centrally on the said shaft is an eccentric B embraced by the split boss or bearing-plates of a connecting-rod C, the two parts C C of the said split boss which surround the eccentric being connected together by screws C with tightening-nuts C on their ends. The other end of the connecting-rod is provided with two bosses or knuckles C having a space between them to receive a knuckle D on the end of the tool-carrying slide D, which is located in the same plane as the shaft B and is reciprocated transversely or at right angles to the axis of rotation of the latter, thereby securing a direct action and a smooth and even working of the slide. A pin E passes through each of the three knuckles C C D, thus uniting the slide and connecting-rod together, and the said pin is fixed against movement by a set-screw E, bearing thereon and passing through the slideknuckle D.

Each of the two bosses or knuckles C of the connecting-rod is split transversely, as shown most clearly in Fig. 4, and has a clamp= ing-screw C passing through, so that by tightening the said screws any wear or shake on the connecting-pin or bosses can be taken up and remedied.

The slide D has dovetailed sides and is movably located between two guide-blocks F Gwith correspondingly-shaped adjacent sides and fixed in position by screws F G, passing through them into the table A.

The guide-plate F is fixed flush up against a rib A forming an integral part of the table A, and set-screws A pass through the said rib and bear against the said guide-bar to further lock the latter against movement. On the upper face of the slide is an internallythreaded boss D Fig. 2, into which is screwed a threaded stalk H. The head or enlarged upper end II of the latter is cut away vertically for part of its thickness and depth to freely-revoluble shank or spindle K, upon' the end of which the boss of the milled-edged stitch-wheel tool L is fixed by a screw L.

The angle of the tool-carrier and its tool may be varied by releasing the screw J and the vertical adjustment of the same may be effected by rotating the screwed stalk H in the boss D A set-screw H passing through the boss and bearing against the stalk, fixes the tool in the vertical position determined upon.

M represents the freelyrevoluble worksupport upon which the edge of the boot or shoe sole is placed to be operated upon by the stitch-wheel.

The work-support may have either a circular or a mushroom head (the latter being shown in Figs. 2 and 3) provided with a tubular shank M, fitting rotatably over the upper end of a pin N, furnished with a shoulder or integral collar N, upon which the said shank rests. The lower part of the said pin enters into the tubular end of a vertical spindle O and will be supported therein when its collar N rest-s on the upper end of the spindle.

The work-support may be adjusted vertically and relatively to the tool L for varying thicknesses of soles by raising the shouldered pin in its socket and fixing it by a set-screw N which passes through the latter for that purpose.

The spindle is located within a sleeve P, which passes downward through an opening in the table A and is furnished with integral flanges P, which are attached to the table by bolts P The lower end of the spindle is reduced in diameter and encircled by a spiral spring Picompressible between a shoulder (formed by a reduction of the spindle) and the floor of the sleeve P, the said floor consisting of a short tubular threaded shank or sleeve Q, fitting within the sleeve and provided with lugs Q, similar to a wing-nut, by tightening or releasing which the power of the spring can be correspondingly altered. The spring tends to force the work-support upwardly toward the stitch-wheel tool; but the movement of the work-support either upward under the influence of the spring or downward as the result of depressing a footpedal, as hereinafter mentioned, islimited by shoulders O 0 forming the extreme ends of a flat 0, formed on the spindle abutting against the end of a set-screw O, passing through the sleeve P, locked in position by the lock-nut 0 The lower end of the spindle O has connected thereto a rod R, whose opposite end is attached in any suitable manner to a footpedal of well-known construction, by depressing which the spindle and work-support can be lowered.

By arranging the reciprocating tool-carrying slide D and its actuating mechanism all in the same or approximately the same plane a much smoother action of the slide is obtained than would otherwise be possible and there is not the same tendency for the slide to work loose and shake in its guides, the effect of which would be to impart such an amount of vibration to the stitch-wheel as would be detrimental to its proper function.

It is important to note that by arranging the reciprocatory slide D, shaft B, and connecting-rod O as set forth, whereby these parts operate in the same or substantially the same horizontal plane, I avoid the excessive friction between the slide and its guides, which would be caused were the operating mechanism arranged beneath the slide and operating upon the latter as in my British Patent No. 23,900 of 1896, such excessive friction having been found by me in practice to result in the slide becoming loose, and the tool is therefore not kept with a uniform pressure on the work and the stitch-wheeling is imperfectly performed. Although I prefer to employ the described means for operating the slide, yet I do not wish to be restricted to the exact construction and arrangement of such means, as any other means which will operate in the same or substantially the same horizontal plane with the slide may be employed.

The operation of the machine is as follows: The operator places his foot upon and depresses the pedal, which thereupon lowers the work-support M. The boot-sole is then placed tread-surface downward upon the latter, and upon the operator removing his foot from the pedal the spring P raises the work-support, which thereupon clamps the marginal edge of the sole between it and the tool L. The operator then moves the boot to and fro, and the frictional contact of the tool upon the edge of the sole adjacent to the upper pro duces a successive series of indentations upon the said sole edge and also rotates the tool. The reciprocatory motion of the tool derived from the slide also tends to deepen and burnish the impressions or indentations made on the sole edge.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- 1. In a stitch-wheeling machine, the combination with a work-support, of a rotarytool, a carrier therefor, a reciprocatory slide having a threaded boss, a threaded spindle on the carrier screwed Within the said threaded boss and adapted for vertical adjustment therein, and mechanism for actuating thesaid slide.

2. In a stitch-wheeling machine, the combination with a rotary tool and its carrier and means for reciprocating them in a horizontal plane, of a Work-support M, a shouldered pin N N on which the latter is revolubly carried, a spring-controlled spindle O supporting the said pin the latter being adapted for Vertical adjustment relatively to the spindle O, a sleeve P containing the said spindle and the spring, a foot-pedal and connections between the spindle and said foot-pedal for lowering the work support relatively to the stitchwheel.

3. In a stitch-wheeling machine, the combination Witha rotary tool and its carrier, and In testimony whereof I have hereunto set means for reciprocating the latter in a horimy hand in the presence of the two subscribzon tal plan e, of a work-support M, shouldered in g Witnesses.

pin N, spindle O sleeve P, and screwed sleeve \VALTER J AGKSON. Q for adjusting the tension of the spring P Vitnesses: substantially as and for the purpose de- E. N. LEWIS,

scribed. G. BLAKESLEY.

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