US1656291A

US1656291A - Shoe-dressing machine

Info

Publication number: US1656291A
Application number: US112038A
Authority: US
Inventors: Passefiume Giovanni
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-05-27
Filing date: 1926-05-27
Publication date: 1928-01-17
Anticipated expiration: 1945-01-17

Description

Jan. 17, 1928. I

e. PASSE'FIUME SHOE DRESSING MACHINE Filed May 27. 1926 IN VEN TOR.

Giovanni P sefzume ATTORNEYS.

Patented Jan. 17, 1928.

UNITED STATES GIOVANNI PASSEFIUME,

or PORTLAND, cameos.

SHOE-DRESSING MACHINE."

Application filed May 27,

My invention relates to shoe machinery and has particularly to do with the rotary tool referred to as a heel breaster, which is the tool used to dress the concave surface of a heel and is frusto-conical in shape. y

' It is common practice at the. present time to fasten over said frusto-conical head a piece of sandpaper and to fasten the latter in place by a threaded nut arranged to grip one portion thereof and grip the same tightly against said head.

It is impractical to use a similarly formed cup-wheel made of emery or similar abrasive material for this purpose, because the leather 1!! ground away by said wheel soon fills up the interstices in said wheel, and forms a glazed surface thereon. Said. surface can only be rendered effective again with great difiiculty and corresponding waste of time.

Sand paper or emery cloth on the other hand is easily torn and is worn out very quickly, the expense and loss of time entailed in the frequent replacement of said sheets of abrasive material being a factor of considerable im ortance.

The object o my invention therefore, is to provide an abrasive attachment for rotary heads of this character by which the expense. trouble and loss of time incident to the frequent replacement or dressing of the active abrasive surface of such heads will be greatly minimized.

I attain this object by providing a metallic plate formed as the segment of a ring and 5 having thereon a plurality of upstanding,

cutting blades prefer: bly formed of struckup portions of said plates. The blades thus formed constitute abrasive or cutting surfaces which will last for a considerable period 40 without replacement, because wear merely dresses theirrheight but maintains a sharp cutting edge thereon. For example, it is the usual practice to replace the strip of sand paper upon the wheel breaster every day or every other day, but metallic plates embodying in invention will serve effectively for severa months, without attention.

I am aware that machines of the type shown in Patent No. 1,054,656, granted 90 February 25, 1913 to Ronald F. McFeely, are

old in the art.

My invention is an improvement over the head shown in said patent in the following particulars:

1. M improved metallic abrasive sheet is adapte to be fastened to a rotary head by a 1926. serial No. 112,038.

single adjustable member, is simply and easily mounted and. dismounted, which factor is of considerableimportance especially when plates having differently formed teeth are used upon the same for roughing and finishing work. i

'2. The upstanding blades in myinvention are flat and will thus cut uniformly independently of their height, thus being substantially unaffected b wear.

3. The upstanding bla es in my invention are staggered and are arranged to cover the entire length of the active surface of the head and thus the shoe being dressed will not have to be moved to and fro, to prevent the formation of grooves'upon the surface being finished.

Further details and advantages of my invention are hereinafterbrought out, and are described with reference to the accompanying drawings, in which:

Fig. 1 is a perspective view of a rotatably mounted head covered with an abrasive sheet embodying my invention;

Fig. 2 is a plan view of said sheet arranged flatwise; and

Fig. 3 is a longitudinal section thru said head and sheet showing the mode of fastening the latter to the fori'ner.

My improved abrasive sheet a is formed to constitute an attachment to a standard frusto-oonical head I) commonlyprovided at one end of the main driving shaft 0 of a shoe machine. Said head is fastened to said shaft at its end of lesser diameter and is coaxial therewith. Adjacent the point of juncture of said shaft 0 with said head 6, a nut 07 is mounted upon the threaded portion 0 of said driving shaft.

The nut (Z is arranged to clamp a sheet of abrasive material wrapped about the head 5 to the latter. The sheet of abrasive material a embodying my invention is formed as a segment of a ring and is provided with a series of substantially flat struck-up portions a forming blades. That is, said blades a are merely portions of the sheet a which have been severed upon one side and forced up cup-shaped to the remainder of the sheet upon the remaining three sides.

As can be noted in Fig. 2 said blades a extend radially to the center of curvature of said sheet and when the latter is rolled and wrapped about the head, as shown in Fig. 1, extend substantially in longitudinal alinement with the axis of rotation of said head and the blade portions a extend outwardly from the head at right angles and substantially radially to said axis.

As can be noted in Fig. 2, said blades a are formed in circular rows and the blades in the adjacent rolls are staggered relatively, and overlap the lines of termination of the blades in the adjacent rows so that the entire active length of the plate serves as an abrasive medium. That is, when the head is used to dress an article the blades cover substantially the entire active surface of the head so that the shoe being dressed may remain stationary Without having grooves formed therein.

The portion of the plate of lesser radius,

as shown in Fig. 2, has a strip a which is unperforated, this being the portion of the plate gripped by the nut d, as shown in The head I) is covered for the greater part With a layer of felt e and the abrasive sheet, which is relatively flexible, is thus permitted to give slightly to conform to irregularities of the article being dressed thereby.

I claim: a

1. In a shoe dressing machine, the comsaid member having a plurality of spaced upstanding blade-like projections constituting shearing blades extending in a row across its face and in a series of rows, the blades in each row being opposite to and overlapping the spaces between the blades in the preceding and succeeding rows.

2. An attachment for a shoe dressing machine, the latter comprising a rotatable frusto-conical head, a driving shaftv co-axial therewith, and joined to the face thereof of lesser diameter, and a threaded nut carried by said shaft at its point of juncture With the head such attachment consisting of a segmental ring-like plate member having a plurality of struck-up elongated cutting blades of substantially uniform height, arranged in rows, the blades in each row being opposite to and overlapping the spaces between the blades in the preceding and succeeding rows and extending upon lines substantially radial to the center of curvature of the ring-like segmental member.

GIOVANNI PASSEFIUME.