US674633A

US674633A - Heel-trimming machine.

Info

Publication number: US674633A
Application number: US69426698A
Authority: US
Inventors: Alexander Mcdowell
Original assignee: Individual
Current assignee: Individual
Priority date: 1898-10-22
Filing date: 1898-10-22
Publication date: 1901-05-21
Anticipated expiration: 1918-05-21

Description

No. 674,633. Patented May 2|, |9o|. A. McDOWELL.

HEEL TBIMMING MACHINE.

(Application Qed Oct. 22, 1898.)

2 Sheets-Sheet I.

(No Model.)

mum

n1: ucams mews ca. wcrau'mon WASHINGION. 0.4.

(No Model.)

Patented May 2:, IQOI. A. McDOWELL.

HEEL TRIMMING MACHINE.

j A lication filed Oct. 22, 1898.)

' 2 Sheets-Sheet 2.

: uonms FETER5 co. PHOTO-HTML. WASHINGTON, u. c.

UNITED STATES PATENT QFFICE.

ALEXANDER MCDOWELL, OF LYNN, MASSACHUSETTS.

HEEL-TRIMMING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 674,633, dated May 21, 1901.

Application filed October 22, 1898. Serial No. 694,266. (No model.)

To ttZZ whom it may concern.-

Be it known that I, ALEXANDER McDow- ELL, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Heel-Trimming Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

Figure 1 of the said drawings shows in section, partly in side elevation, certain parts of a heel-trimming machine having applied thereto one embodiment of my invention. Fig. 2 is a view in front elevation-that is, from the right-hand side in Fig. 1showing the top-lift guard and the means of supporting and adjusting the same. Fig. 3 is aview in section on the vertical plane which is indicated by the dotted line 3 3 in Fig. 2 looking in the direction that is indicated by the arrows near the ends of such line. Fig. 4 is a view in vertical section on the plane that is indicated by the dotted line 4 4 in Fig. 3 looking in the direction that is indicated by the arrows near the ends of such line. Fig. 5 is a view in section on a vertical plane corresponding with that in Fig. 1, showing a modification. Fig. 6 is a view of the top-lift guard and its carrier of the modification shown in Fig. 5 looking from the left-hand side in the latter figure. Fig. 7 is a view of the ring-shaped body of the top-lift guard of Figs. 5 and 6 detached.

Having reference first to Figs. 1 to 4, 1 designates a fixed part of the frame of a heeltrimming machine. 2 designates a portion of the cutter-shaft, and 3 designates the cutter, 4 being a counter-guard. 5 is the toplift guard. Heretofore in some instances the top-lift guard has been mounted to fit loosely upon a portion of the cutter-shaft or upon a disk or head which is affixed to the said shaft, so as to enable the said guard to turn independently with reference to the cutter, whereby when the heel of a boot or shoe has been presented to the action of the cutter and the top lift thereof has been caused to bear against the top-lift guard the said guard may remain stationary while the cutter and its shaft revolve. With this arrangement the great wear that takes place between the bearing portions of the top-lift guard and the rotating part to which it is applied soon destroys the fit between the said guard and the said part, so that the guard becomes loose and plays or moves in a manner necessitating replacement of the worn guard by a new one. In some cases the top-lift guard has been made fast, so as to turn in unison with the cuttershaft and cutter; but with this arrangement various causes operate to occasion injury by the guard to the top lift when the latter comes in contact with the rotating guard. My invention provides in novel and improved manner for supporting a top-lift or corresponding guard in connection with the cutter of a heel- I trimming or the like machine, as now will be made to appear. Having reference to the drawings, the top-lift guard 5 shown therein is annular or ring-shaped, 51 being the body thereof, said body having, as customary, the beveled surface 52 to facilitate the application of the top lift of a heel to the usual lip 53, against which the said top lift is caused to bear during the performance of the trimming operation. This form of guard has been used heretofore, but in connection with a supporting disk or head, the latter sometimes forming a part of the cutter and rotating in unison with the cutter and cutter-shaft. My invention provides for supporting an annular or ring-shaped guard 5, like the one shown in the drawings, by means of devices which are independent of the cutter and its shaft and are fixed or stationary with relation thereto. The said devices comprise, essentially, a carrier for the said ring-shaped guard, means of holding the guard fixedly to the said carrier with capacity for adjusting the guard around its center from time to time for the purpose of presenting one portion after another of its periphery in position for use, and a support forthe said carrier having combined therewith means of adjustment enabling the top-lift guard to be set in the desired position with respect to the cutter.

The embodiment of the invention which is represented in Figs. 1 to 4 of the drawings contains a clamp, which is constructed to receive the top-lift guard and hold it fixedlythat is, without capacity for free rotationthe said clamp being constructed to enable the top-lift guard to be shifted or adjusted angularly around its center from time to time as the position of the lip thereof, which isin position for use, becomes worn, in order to present successively fresh portions of the said lip in position for action until the entire circuit of the lip on the guard has been worn out. The form of the clamp and its carrier may be varied in practice. Herein I have shown the carrier 6 formed or provided at 61 61 with seats, against which the back of the ring-shaped guard 5 is laid, and in connection with each of thesaid seats I have shown ablock orplate,'as 62,each of the said blocks or plates being held in place by screws 63 63. The seats 61 61 are herein shown formed on blocks or lugs 64: 64, with which the carrier6 is provided, and the screws 63 63 are shown as entering holes tapped in the said blocks or lugs; but the particular manner of forming the said seats and of their application to the carrier or of the application of the screws, is not material. Each plate 62 is furnished with a lip, as 621, which overlies a part of the edge of the body of the guard and is shaped properly to conform to the part of the guard with which it engages. By the engagement of the said lips with the edge of the guard the latter is held in place on the seats aforesaid. The rear edge of each plate 62 in the form of such plates herein shown is furnished with a lip, as 622, entering a groove, as 623, formed in the corresponding block or lug 64, the plate thereby being held from displacement relatively to the said block or lug. After the ring shaped guard 5 has been placed in position on its seats the plates 6:2 62 are tightened up against the edges of the guard by turning the screws 63 68. Wheneverdesired-as, for instance, after the portion of the lip 53 first in use has become badly worn-one of the plates 62 may be loosened by turning its screws in the proper direction sufficiently to enable the guard to be turned or adjusted augularly around its cen ter far enough to present a fresh portion of the said lipin position for use, after which the plate 62, which was loosened, may be tightened up again. In some cases one of the plates 62 may be a fixture. The form of the plates and the means of operating the same to clamp the guard 5 may be varied in practice. In actual usethe guard 5 is fixed in its position with relation to the cutterthat is to say, it is not capable of rotating or moving in unison with either the work or the cutter. It is, however, capable of rotary or angular adjustment from time to time until all portions of its lip 53 have been completely used up. It will be apparent that a ring-shaped guard of the kind or kinds at present in use and which is an ranged to revolve during the working of the machine to which it is applied may be taken after the inner or bearing portion thereof has become so badly worn as to render the guard unfit for further employment in the connection in which it originally was intended to be employed and applied to holding and supporting devices embodying the principles of my present invention, wherewith it may be continued in use until after the lip 53 thereof has been completely used up around the entiie circuit of the guard.

The carrier 6 is mounted upon a support 7, the latter being applied to a fixed part of the frame of the machine. Herein the said support is shown constituted by an arm having a hole 71 therethrough, which enables the said arm to be passed over the cutter-shaft, the latter extending through the said hole. I fit the arm upon some convenient fixture that is concentric with the cutter-shaft. In the present case the arm is fitted upon the projecting end of the bearing-sleeve 72 for the cutter-shaft l, the said bearing-sleeve being fixed in position in the frame 1. A slit 73 is made through one end of the support 7, such slit opening into the hole 71, and the clamping-screw 74 is applied in connection with the portions of the support which are separated by the slit. The described construction of the support provides a split socket which is capable of being clamped upon the bearing-sleeve 72, so as to hold the support in any desired position of angular adjustment. Thereby the support may be held either in the position in which it is represented in the drawings or upon manipulating properly the clamping-screw 7d the said support may be swung around the axis of the cutter-shaftthat is to say, it may be adjusted angularly with respect to the said axis into any required position.

In order to enable the guard 5 to be adjusted with relation to the cutter, so as to permit that portion of its lip 53 which for the time being is brought into use to be located exactly right with respect to the cutter at the working point in the machine, I provide means of adjustment in connection with the carrier, permitting the carrier to be shiftedin two directions at right angles to each other in a plane extending transversely at right angles to the axis of the cutter-shaft. This means of adjustment enables the portion of the guard 5 which is intended to be brought into action to be set with exactness in proper correspondence with the cutter. It also enables compensation to be made for any differences which may exist in the diameters, &c., of the guards which it is proposed to use or for any variations in the diameter of the cuttersuch, for instance, as those which result from grinding the cutter to sharpen the same.

The adjustment of the carrier 6 transversely with respect to the support 7 is effected through the aid of set or adjusting screws 8 8, which are fitted to transverse holes tapped in one of the said parts, herein the support, and engaging by their inner ends with a projection or-pin 82, applied to the other of such part-s, herein the carrier, the said projection or pin entering a hole 83 in the support, Wherebyit is covered up and concealed. For the purpose of effecting the adjustment of the carrier 6 longitudinally with respect to the support the carrier is connected with a slide 84, applied to the support. The said slide is shown formed with an end portion 85, extending at right angles across one end of the support 7 and fitting and movingin a recess 86 in the end of the support. To a hole made through the said end portion is applied a screw 87, the threaded portion of which enters a hole 88, tapped into the end of the sup-- port and extending longitudinally of the support. This screw serves to connect the slide with the support. The drawings show one or more grub-screws 881 881, fitted to a corresponding number of holes which are tapped in the said end portion of the slide, the said screw or screws making contact by the end or ends thereof with the end surface of the arm. By the conjoint action of these screws 87 881 the slide is adjusted to the desired point lengthwise of the support and locked in position. The carrier 6 is connected conveniently with the said slide by means of a bolt 89, the stem of which passes through a slot extending lengthwise of the support, the head of the said bolt holding the body of the slide against one side of the support, while the bolt afiords a convenient pivot about which the carrier may be swung under the action of the adjusting-

screws

8 and 8.

Figs. 5, 6, and 7 represent an embodiment of the invention in which the lip or flange of the top-lift guard is made in the form of a separate and detachable thin ring 56, which is secured by screws 57 57 to the face of the body 58. The said body 58 is attached by screws 59 59 to the carrier 69. The body 58 has a complete circular series of holes 68 68 for the reception of screws 59 59 tapped into its back, the said holes being spaced at a suitable short distance apart. This enables the top-lift guard to be adjusted angularly around its center from time to time as wear occurs, substantially as in the case of the other em bodiment of the invention.

WVhat I claim as my invention is 1. The combination with the cutter, of the ring-shaped guard, the stationary carrier, means to fix the said guard in stationary position on the said carrier and adjust the guard on the carrier around its center to bring different portions of its periphery successively around to the working point from time to time as wear occurs, substantially as described.

2. The combination with the cutter, of the ring-shaped guard,the stationary carrier having the holder or clamps receiving the said guard and holding it fixed or stationary and in which the guard maybe adjusted from time to time as wear occurs to bring different portions of its periphery successively around to the working point, substantially as described.

3. The combination with the cutter, of the ring-shaped guard, the carrier, means to fix the said guard on the said carrier and enable it to be adjusted on the carrier around its center to bring difierent portions of its periphery successively around to the working point from time to time as wear occurs, a support to which the said carrier is attached, and means to adjust the said carrier on said support in two directions at an angle to each other in a plane at right angles to the axis of the cutter, substantially as described.

4. The combination with the cutter, of the ring-shaped guard, the carrier, means to fix the said guard on the said carrier and enable it to be adjusted on the carrier around its center to bring different portions of its periphery successively around to the working point from time to time as wear occurs, the support, the slide on said support to which the carrier is connected pivotally, the

screws

87 and 881 by which the said slide and carrier are adjusted longitudinally of said support, and the

screws

8, 8, by which the carrier is adjusted transversely with respect to the support, substantially as described.

5. The combination with the cutter, of the ring-shaped guard, the carrier, means to fix the said guard on the said carrier and enable it to be adjusted on the carrier around its center to bring dilferent portions of its periphery successively around to the working point from time to time as Wear occurs, the support adjustable angularly around the axis of the said cutter, the slide on said support to which the carrier is connected pivotally, the

screws

In testimony whereof I affix my signature in presence of two witnesses.

ALEXANDER MCDOWELL.

Witnesses:

GHAs. F. RANDALL, LEPINE HALL RICE.