US1603715A - Upper-trimming machine - Google Patents

Description

Oct. 19,1926. 1,603,715

' J. H. REED UPPER TRIMMING' MACHINE Filed Dec. 22, 1925 2 sheets-sheet 1 J. H. REED UPPER TRIMMING MACHINE Filed Dec. 22

WM 2 a 2 Sneec et 2 Patented Oct. 19, 1926.

iJlttED STATES PA JAMES H. REED, OF SWAMPSOOTT, MASSACHUSETTS, ASEJGNOR TO UNITED SHOE MACHINERY OORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

UPPER-TRIMMING lVlIACHINE.

Application filed December 22, 1925. Serial No. 76,963.

The present invention relates to upper trimming machines and is herein shown as embodied in a machine for trimming the margin of a shoe upper after the shoe has been lasted to prepare the shoe for subsequent operations in its manufacture. The invention is designed primarily for use in the production of the shoe disclosed in my prior Patents No. 1,512,041 and No. 1,512,- &2 issued October 21, 1924, and the principal object of the invention is to produce an upper trimming machine by which the surplus upper where it has been drawn over the unlipped insole and temporarily secured in position by lasting tacks may be quickly and accurately trimmed at a uniform distance from the edge of the insole, particularly around the shank and forepart, in order that thefoperation of the machine which inserts the permanent metallic fasteners across the edge of the upper may be facilitated and satisfactory work, uniform in appearance. produced without the necessity of any considerable care or skill on the part i of the operator.

.lt is to be understood, however, that while the invention is particularly useful as providing a machine for operating upon the shoe of my prior patents in the manner and for the purpose above indicated, the invention is not limited to operation upon this particular type of shoe, but provides a simple and efficient machine for trimming the upper of any shoe in which the upper after being drawn over the insole lies flat against or substantially parallel to the insole surface.

Other objects of the invention are to produce an upper trimming machine of simplified and improved construction which can be operated at high speed and which will permit the work to be readily manipulatcd so that the shoe upper can be trimmed in a satisfactory manner without liability of injury to the shoe, or to the cutting blades or trimming devices of the machine.

With the above objects in view, the invention contemplates the provision in an upper trimming machine of trimming blades arranged to cut in a plane substantially at right angles to the sole surface of a shoe, and a narrow foot preferably but not necessarily formed by a portion of one of the trimming blades arranged to extend beneath the shoe upper in the direction of feed so as to form a work rest against which the shoe is held during the trimming operation and on which the shoe may be moved to cause the trimming cuts to follow the outline desired, and at the same time the lasting tacks, if such tacks are used in the manufacture of the shoe, may be kept out of the path of the trimming blade s. Other features of the invention consist in improved constructions and arrangements of parts hereinafter described.

The invention will be readily understood from an inspection of the accompanying drawings in which Fig. 1 is a view in side elevation of an upper trimming machine embodying the invention; Figs. 2, 8 and 4 are diagrammatic views indicating the operation which is performed upon a shoe by the machine and the manner in which work may be manipulated while the trimming cut is being made at different portions of the shoe; Fig. 5 is a diagrammatic view showing the parts illustrated in Fig. 4 in end elevation; Fig. 6 is a view in front elevation of the head 6f the machine with the cover plate at the forward end of the driving shaft removed and showing a portion of a shoe being operated upon by themachine; Fig. 7 is a view in side elevation of the parts of the machine illustrated in Fig. 6 with a portion of the shoe shown in cross section; Fig. 8 is a detail vertical sectional View taken on the line 8-8 of Fig. 6; Fig. 9 is a detail sectional plan view taken on the line 99 of Fig. 6; and Fig. 10 is a plan view showing somewhat diagranunatically the appearance of a shoe after having been operated upon by the machine.

In the machine illustrated in the drawings the only part which engages the sole of the shoe is a narrow foot formed by the lower port-ion of a fixed trimming blade 12. A lasted shoe upper is indicated at 14- as having been drawn over an unlipped insole 16 and temporarily secured in position lasting tacks 18. The fixed blade 12 is arranged so that it can extend beneath the upper 14: in the direction of feed and so that its lower surface can form a work rest againstfwliicli the shoe may be held. The blade 12 is provided on its upper surface with an inclined cutting edge 20 extending backwardly from the comparatively sharp point at the forward end of the blade towards the shank. The shank portion of the blade joins a vertically extending plate-like rear portion which is received in a recess in the lower end of a vertical bar 22 to which it is secured by a screw 24. A. cooperatng trimming blade is indicated at 26 provided with a lower cutting edge 28 inclined slightly dow' ward from its forward end so as to make an acute angle with the cutting edge of the fixed blade. The blade 26 is provided with a laterally projecting pin 30 which is jour naled in the front plate of an angular block 32, which block is secured to a block 3st by screws 36 passing through the rearwardly extending plate of the angular block. The blade 26 is rapidly vibrated about the axis of the pin 30 as a pivot, and in order to hold the blade pressed snugly against the side of the fixed blade 12 a leaf spring 88 is provided, the upper end of which is secured to the block 32, and the lower end of which acts on a plunger 40 mounted in the block 32 and having at its inner end a surface which bears against the blade 26.

A screw 42 passing through the leaf spring and screwing into the block 32 serves as a means for adjusting the pressure of the blade 26 against the blade 12. Rapid vibrating movements are imparted to the blade 26 during the operation of the machine by a vertical plunger 44-, the lower end of which is provided with a laterally projectingpin 46 engaging a slot in the blade 26, and the upper end of which is provided with a transverse slot in which 1s seated a block 48 mounted upon a crank pin 50 at the forward end of a driving shaft 52. The vertical bar 22 and the plunger 44 are mounted in vertical guideways in the block 34, and this block is secured to the frame 5% of the machine by screws 56. Cover plates 58 and 60 serve to retain the vertical bar 22 and plunger 44 in their guideways, and the vertical bar 22 is also. retained in position by a screw 62 at its upper end by which it may be adjusted vertically and by a screw 64 near its lower end which passes through a vertical slot in the block 34-. This vertical adjustment of the bar 22 permits the angular relation of the cutting edges of the two trimming blades to be varied so as to produce the best results and to leave the proper clearance between the blades at their forward ends when the vibrating blade is at the limit of its downward stroke.

In trimming the upper of a shoe with the machine illustrated in the drawings, the shoe may be presented to the trimming cutters as illustrated in Fig. 2. As shown in this figure. the cut is preferably started just in front of the heel seat. the shoe being tipped slightly so that the forward pointed end of the fixed blade may enter beneath the ugper. By reference to Figs, 5 and 6, it will be noted that the lower surface of the fixed blade is convex in the direction of feed so that the blade (an be readily be entered beneath the margin of the upper and also the shoe can be tipped aboutan transverse to the direction of feed as may be desired to cause any portion of the upper to be cut without injury to other portions of the upper or of the shoe. The advantages or a construction which enables the shoe to be manipulated in this manner will be particu larly apparent from an inspection of Figs. 4 and 5, which indicate the relative posi tions of the shoe and fixed cutting blade while the toe portion of the upper is being trimmed. It will also be noted from an inspection of the dravings, particularly of Figs. 1, 3 and 7, that since the work rest formed by the fixed trimming blade is narrow transversely of the direction of feed the shoe can be tipped as desired about an axis extending in the direction of feed and the plane of cut mantained substantially at right angles to the surface of the shoe sole or at any desired angle necessary to produce the desired results and avoid interfereiue with the lasting tacks.

The nature and scope of the invention having been indicated and a machine enibodying the several features of the invention having been specifically described, what is claimed is:

1. A machine for trimming the upper of a shoe provided with an insole over which the upper has been drawn having, in combination, a trimming blade, a cooperatmg trimming blade, and a narrow foot arranged to extend beneath the upper in the direction of feed and form a work rest against which the shoe may be held with the sole surface substantially at right angles to the cutting plane. I

2. A machine for trimming the upper of a shoe provided with an insole over which the upper has been drawn having. in combination. a trimming blade, and a cooperating fixed trimming blade arranged to extend in the direction of feed beneath the upper and provided with a portion forming a work rest to engage the sole and on which the shoe may be tipped about an axis lying in the cutting plane. w

3. A machine for trimming the upper of a shoe provided with an insole over which the upper has been drawn having, in combination, a trimming blade, and a cooper-an ing fixed trimming blade arranged to extend in the direction of feed beneath the upper and provided with a surface convex in the direction of feed to engage the sole and form a work rest on which the shoe may be tipped about an axis transverse to the direction of feed.

In testimony whereof I have signed my name to this specification.

JAMES H. REED.

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