US555718A

US555718A - Carriage for rounding-out machines for boot or shoe soles

Info

Publication number: US555718A
Authority: US
Publication date: 1896-03-03
Anticipated expiration: 1913-03-03

Description

(No Model.) 7

v A. 0. WINN. CARRIAGE FOR ROUNDING OUT MACHINES FOR BOOT 0R SHOE SOLES.-

No. 555,718. Pa tented Mar. 3, 1896.

a D 'r' j H l I IHI I E UNITED STATES PATENT OFFICE.

ALBY C. )VINN, OF HAVERHILL, MASSACHUSETTS.

CARRIAGE FOR ROUNDING-OUT MACHINES FOR BOOT OR SHOE .SOLES.

SPECIFICATION forming part of Letters Patent No. 555,718, dated March 3, 1896.

A lication fil d December 19, 1894. Serial No. 532,307. (No model.)

I To all whom it may concern.-

Be it known that I, ALBY O. WINN, a citizen of the United States, residing at Haverhill, in the county of Essex and State of Massachusetts,have invented certain new and useful Improvements in Carriages for Round ing-Out Machines for Boot or Shoe Soles, of which the following, taken in connection with the accompanying drawings,is a specification.

The object of my invention is to produce a carriage for rounding-out machines whereby the sole of a boot or shoe can be cut with either a square or round toe, and the invention is particularly adapted for machines in which the carriage is carried around the pattern by rollers working in a slot in the table; and the invention consists in the peculiar construction of the carriage and arrangement of the knife as hereinafter fully described and pointed out in the claims.

Referring to the accompanying drawings, Figure 1 represents a plan or top view of a carriage for rounding-out machines embodying my invention. Fig. 2 is a front view of the same. Fig. 3 is aplan or top View of the base-piece. Fig. 4 is a rear view of the knife.

A represents the base-piece, which at its front end is cut out and a plate A of circular form is inserted, to the under side of which are secured frictionrollers B, that work in the slot in the table. This plate A can be adjusted and held in the required position, according to the size of the sole and shape of the toe to be cut, by means of a screw 1) that passes through the side of the base-piece A, its end entering a hole in the plate A. In the drawings I have shown two of said holes in dotted lines, (see Fig. 3,) but any desired number may be employed.

The sides of the base-piece A extend up, and near the top are formed with a recess a, and upon the top of each side is secured a plate a, thus forming a groove in which a plate B slides. To the under side of the plate 13, at its rear end, is fulcrumed a bar D, (shown in dotted lines in Fig. 1,) and to the front end of the bar D is secured a roller cl.

E is a spiral spring, the outer end of which is in contact with said roller cl, and its inner end is secured to the hub of a ratchet-wheel F, carried by an arm or side extension A of the base-piece A. The upper end of the hub of the ratchet-wheel F is provided with holes f, whereby the tension of the spring E can be adjusted to carry the plate B forward as required. The said ratchet-wheel is held in place by a pawl G, mounted upon the arm or extension A a spring 9 holding the pawl in contact with the teeth of the ratchet-wheel F.

The spring E is inclosed between two plates H H to keep pieces of leather or other articles from interfering with its action, one of said plates, H, being secured to the arm A", and the other, H, to the hub of the ratchet-wheel F. The outer end of this spring passes through a slot in the side wall of the base-piece A.

In order to draw and hold the sliding plate B back whena sole has been cut or a fresh piece of leather is to be put in place, I employ a hand-lever I, fulcrumed at i to the plate 13, one end of which lever is in contact with a stud J on plate a, so that by drawing the outer end of the lever back it will carry the plate B with it, and when the lever has passed over a cam-shaped stud j it is held fast. Upon the lever being released a spring K, secured at one end to a stud 7c on the plate B and at its other end to the lever I, draws said lever back to its normal position that is, in contact with a stud 7a which prevents its passing too far forward.

L is a small plate pivoted to the sliding plate B by a bolt Z. To the top of this plate on one side is secured a guide-roller M, and on the other side is a small block N, which carries the knife P, that is of the form shown and is secured in place (but so as to be free to oscillate) by a bar Q passing through the block N, its end entering a notch 19, cut in the stem 1) of the knife. The bar Q is held in place by a fiat spring B. To hold the knife in its normal position a small lever S is arranged at the back of same, which is kept pressed forward by a spring T.

IVhen in operation the base-piece A is by any suitable means caused to travel on the table around the pattern and the sole to be cut, the rollers B B working in a slot in said table, the rollers having first been adjusted in position according to the size of the sole and shape of toe required. The spring E, pressing the sliding plate B forward, causes the roller M and the lower end of the knife P to come in contact with the pattern, at the same time allowing them to advance or recede according to the formation of the pattern. The knife P, being carried by its stem 1), is free to adjust itself to any angle, and as the cutting-edge of the knife is on a vertical line with the center of the stem it can turn at right angles, as would be required when cutting a square toe, the pattern holding the base of the knife on a line with the side of the pattern until the corner is reached, when the center of the stem 1) and the cutting-edge of the knife would be in vertical alignment with said corner, and as the roller M would have turned the corner the base of the knife is pressed out by the lever S and spring T and turned sharply at right angles, the edge of the knife not having altered its position, but simply turned on its fulcrum. Thus a sharp corner is cut.

What I claim is 1. A carriage for rounding-out machines comprising in its construction a base-piece, a plate rotatively engaged therewith and carryin g antifriction-rollers depending for e11- gagement with a suitable guide, means for locking the base-piece and plate together at different positions of rotative adjustment, and self adjusting knife carrying devices mounted on the base-piece.

2. In a carriage for rounding-out machines, a spring-pressed slide, a block pivoted thereon and having bearing-pieces to work against the pattern, and a knife pivoted on said block and spring-pressed on one side of its pivot substantially as and for the purpose described.

3. In a carriage for rounding-out machines a block pivoted to a sliding plate, a knife mounted upon said block the cutting-edge being on a vertical line with the fulcrum upon which said knife turns and a guide-roller arranged on said block in advance of the knife substantially as set forth.

4. In a carriage for rounding-out machines, a slide yieldingly pressed forward, a block pivoted on said slide and carrying a roller to bear against the pattern, and a knife pivoted 011 the block beside the roller and adapted to bear against the pattern, said knife being spring-pressed 011 one side of its pivot substantially as and for the purpose described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 19th day of July, A. D. 189-1.

ALBY (J. \VINN. \Vitnesses CHAS. STEERE, EDWIN PLAN'IA.