US956871A

US956871A - Blank-trimming machine.

Info

Publication number: US956871A
Application number: US41774408A
Authority: US
Inventors: Alfred W Ainsworth; Samuel J Putnam; Karl A Edstrom
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-02-25
Filing date: 1908-02-25
Publication date: 1910-05-03
Anticipated expiration: 1927-05-03

Description

A. W. AINSWORTH, S. J. PUTNAM & K. A. BDSTROM.

BLANK TRIMMING MACHINE.

MPLIGATION FILED FEB. 26, 1908.

956,871 Patented May 3, 1910.

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APPLICATION FILED T11R25, 190a. Patented M313, 1910.

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ALFRED W. AINSWORTH, SAMUEL J. PUTNAM, AND KARL A. EDSTROM, 0F DENVER, COLORADO.

BLANK-TRIMMING MACHINE.

To all whom it may concern:

Be it known that we, ALFRED \V. AinswoR'rH, SAMUEL J. PUTNAM, and Kane A.

age of money, may be reduced in weight when above the standard, and is especially applicable to milling machines used to roll the milled edges on coin.

In ourinvention in coining over-weight blanks, the milling machine is so adjusted as not only to mill the edge of the coin but to create a bur or up set around such edge, which bur or up set is removed by suitable cutters, thereby reducing the weight of the blank to the proper amount, the cutters being adjustable for this purpose.

WVith the above object in view, the invention may be said to consist in the combination with the grooved shoe and grooved disk of a milling machine, of a pair of cutters located between the disk and the shoe and one on each side of the plane of travel of the blank passing therebetween, with if nccessary, proper means, for adjusting the position of the knives in respect to each other, and in respect to the plane of travel of the blank and for guiding the cutters and centering them in respect to the blanks.

It further consists in the construction, arrangement and combination of the several parts of which it is composed as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings in which corresponding parts are designated by corresponding marks of reference: Figure 1 is a plan view of a device constructed according to this invention. Fig. 2 is a central vertical section on lines22 thereof. Fig. 3 is an inside elevation of the shoe and cutters. Fig. 4 is a detail view of the cutter carrying mechanism.

A suitable support or table 1 carries a vertical shaft 2, driven by appropriate mechanism 3 and having on its upper end, the disk 4 provided with a peripheral groove 5. The table also carries by brackets 6 a shoe 6, having a curved inner face grooved at 7 in the same plane as the groove 5 in Specification of Letters Patent.

Application filed February 25, 1908.

Patented May 3, 1910.

Serial No. 417,744.

the disk, the shoe being so disposed relatively to the disk that the space between the bottom of the

grooves

5 and 7, at that end of the shoe, into which the unmilled blank is fed, is greater than the corresponding space, at the opposite end of the shoe, which is the end for the exit of the blank. One or both of the

grooves

5 and 7 have their bottoms provided with fine indentations or teeth, indicated in F jig. 3, whereby the blank passing through the run way formed by the two grooves, will have its edges milled, and at the same time will beslightly set up at its edges. A machine as thus constructed is capable of properly milling a blank of the exact weight, but for the purpose of trimming or reducing the weight of an overweight blank, we provide trimming mechanism carried by the shoe. In the embodiment shown such mechanism takes the form of cutters 9 located above and below the runway, that is between the disk and shoe, and above and below the plane in which the grooves therein are located. Each of these cutters are straight and of a length several times as great as the diameter of the blanks.

The blanks in their travel along the run-- way are rotated by the driving action of the disk and are fed thereby so that they pass between the cutters while rotating. Thus the up-set edge at the end of one diameter of a disk is fed toward the outer faces of the cutters while the Lip-set edge at the opposite end of the same diameter is fed toward the inner faces of the cutters, and as the disk is fed during such rotation, each portion of each face of each of the knives will thus at one period or the other of the rotation of the blank be called into play in removing the up-set edge. For this reason the cutters have cutting edges 10 on both their inner and outer faces. They are carried in a U-shaped frame 11 encircling the shoe and held against lateral displacement thereon by means of bolts 12. The frame 11 is by preference made in two

pieces

11 and 11 slidably connected by means of ways 13 located in the connecting member of the frame, the bolts 19. pass through the two arms of the frame, engaging them with oppositely disposed threads, and are geared together as at 14. One of the bolts is provided with a handle 15 by which it and the gear 14. may be rotated in unison, whereby the two arms of the frame may be caused to approach and recede from each other and thus to vary the distance between the cutting edges of the cutters, while at the same time, the frame as a whole and the cutters carried thereon, are free to move transversely in respect to the shoe. Adjusting screws '16 are provided in'the upper part 11 of the cutter frame limiting its downward motion in respect to the shoe, and the frame also carries an adjustable guide 17 provided with a flared mouth located toward the entering end of the run-way and straddling the same. When the machine is in operation the blanks arefed to the run-way at the entering end thereof, and each one in its movement toward the cutters enters the flared mouth of the guide and thus shifts the cutter frame to such extent as may be necessary to center it in respect to such blank and to permit the blank to enter centrally between the knives, which may be adjustably carried in the knife frame to adjust for wear.

With the mechanism above described it will be seen that the amount of metal removed from the blank is determined by the adjustment of cutters to or from each other and that as such cutters with the frame in' which they are carried is movable as a whole across the plane by the blank being trimmed, the work of the two cutters is equalized.

Having thus described our invention, what we claim and desire to secure by Letters Patent is:

1. The combination with a milling former and its shoe, forming a run-way for a blank, of cutters located on each side of the runway and adapted to remove metal upset by the former and shoe.

2. The combination with a milling former and its shoe, forming a run-way for a blank, of cutters located on each side of the runway and rigidly connected together and free to move together transversely to the runway, for removing metal upset by the former and shoe.

3. The combination with a milling former and its shoe, forming a run-way for a blank, of elongated double edge cutters located on each side of the run-way, and adapted to remove metal up-set by the former and shoe.

4.. The combination with a milling former and its shoe, forming a run-Way for a blank, of elongated double edged cutters located on each side of the run-way, and rigidly conthe run-way in umson.

6. In combination with a milling disk and its fixed shoe, forming a run-way for a blank, of a frame consisting of two parts, and free to move transversely thereto, a cutter carried on each part of the frame on opposite sides of the run-way and means for causing the two parts of the frame to approach and recede from the plane of the run-way in unison.

7 In combination with a milling disk and its fiked shoe, forming a run-way for a blank, of a frame consisting of two parts, and free to move transversely thereto, a flared guide carried by the frame, projecting on each side of the run-way, and a cutter carried on each part of the frame and on opposite sides of the run-way to receive the blank from the guides and means for causing the two parts of the frame to approach and recede from the plane of the run-way in unison.

8. The combination in a blank reducing machine, of a rotating grooved disk, a grooved shoe located adjacent thereto and forming between it and the disk a run-Way for the blank, a two part cutter frame freely movable as a whole transversely in respect thereto, means for causing the two parts of the frame to approach and recede in unison from the plane of the run-way, an elongated double edged cutter carried by each part of the frame projecting in the proximity to the run-way on each side thereof, and a flared guide carried by the frame in proximity to the run-way and on that side of the cutters to which the blanks feed for delivering the blanks to the cutters.

ALFRED WV. AINSWORTH. SAMUEL J. PUTNAM. KARL A. EDSTROM.

Witnesses R. H. SHINKLE, W. WV. LAWS.