US643585A - Button-machine. - Google Patents

Description

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N. BARRY, 1R. BUTTON MACHINE. (Application me@ Apr. 19, lees.)

.VNV M w A i I NITED STATES PATENT Finca.

NICHOLAS BARRY, JR., OF MUSCATINE, IOVA.

BUTTON-MACHINE.

SPECIFICATION forming part of Letters Patent No. 643,585, dated February 13, 1900. Application flied April 19,1899. Serial No. 713,576. (N0 mOleI- To @ZZ whom it may concern:

Be it known that I, NICHOLAS BARRY, Jr., of Muscatine, in the county of Muscatine and State of Iowa, have invented certain new and useful Improvements in Button-Machines; and I hereby declare that the following is a full, clear, and exact description thereof, referegce being had to the accompanying drawings, which form part of this specification.

This invention is an improvement in button-machines, and has particular reference to machines in which the button-blanks are operated\upon, but is applicable to blankcutting machines also and to other useful purposes. Its object is to provide a self-regulating tool-holder which will automatically adapt itself to the condition of the material being acted upon whether the same be hard or soft or tough or brittle and will thus prevent injury to the material or blanks or buttons being operated upon.

The invention is particularly designed as a tool-holder, and in the accompanying draw ings it is illustrated as adapted for a blankdressing tool, and I will so describe it herein; but it is obvious that instead of a dressingtool, drillers, blank-cutters, and other tools might be attached to the holder and operated in the same manner.

Heretofore in button-finishing machines the tools have been fed or controlled by a hand or by an automatically operated screw-feed, resulting in a uniform feed of the tool whether the material being operated upon is hard or soft, and it thus frequently results that either the product is broken or injured or iinished unequally, as the material of which the buttons are formed is generally shell or bone, some blanks being more brittle than others and some being hard and others soft. By my improved holder the feed is controlled by weight or gravity, and therefore is adapted to any kinds or conditions of material, because if the material be hard the tool will be upheld and shave oft the material more slowly, according to the weight or pressure; but the feed is nevertheless sufficiently positive in its action. If the material is hard, t-he tool will operate more slowly. If soft, it will operate more quickly with the same weight or pressure, but in each case will stop cutting just as soon as the work is done. The old automatic screw-feed forces the tool into hard material just as rapidly as into soft, frequently breaking the hard buttons, which will not stand the same degree of pressure or rapidity of reduction as will the softer ones. In hand-fed work the effect is much the same as in automatic screw-feed, because the operator does not know if the material or blanks being operated upon are hard or soft, and consequently will feed all substantially alike.

The invention therefore consists in a novel automatic or gravital feed-tool holder and in the novel construction and combination of devices summarized in the claims and here`- inafter described in connection with the accompanying drawings, in which- Figure lis a side elevation of part of a button-finishing machine, showing my improved holder applied thereto. Fig. 2 is a vertical section on line 2 2, Fig. 1. Fig. 3 is a detail section on line 3 3, Fig. 2,looking downward.

/A designates a sleeve in which the holder is guided. This sleeve may be of any suitable construction. As shown, it is provided with an arm a, by which it is secured to the edge of a support T by means of bolts a', as shown. Neatly fitted in this sleeve and playing therethrough is the tool-holder proper, which consists of a tube B, that extends entirely through the sleeve and is provided at its upper end with alateral projection b, overlying a lateral projection A of the sleeve, a screw A2 being tapped throughprojection A', so as to regulate the limit of descent of the holder in the sleeve by contacting with projection b. A pin C transfixes the projections b and A' and prevents rotation of the holder in the sleeve.

Through the closed upper end of the tube B is tapped a screw D, the lower end of which bears against a follower d in the tube, which follower rests on top of the tool carried by the holder, which tool, as shown, is a trimmer E, that projects below the lower end of the holder, but is secured and centered between two clamping-jaws F f, secured within the lower end of the tube B by means of screws F f. Screw F is threaded into jaw F,which ts closely Within the tube, and screw f impinges against the jaw f, which is loosely IOO itted in the tube to allow' for a slight adjustment of the jaws in relation to each other, screw fr being placed quartering to screw F, so as to give a diagonal thrust to the jaws and cause them to li rmly clamp both the edges and the sides of the tool.

Upon the holder is placed a weight or weights G, which may he slotted, like ordinary scale-weights, to slip laterally onto the screw D, so that the weights maybe changed and increased or diminished, as may be desired.

Below the tool-holder is a blank holder' or chuck H, which is of suitable construction and adapted to hold the button-blanks t. In practice it is preferred to rotate the chuck and let the tool-holder remain stationary. The particular construction of the chuck and the means for operating it are not claimed herein, the employment of rotatable chucks in connect-ion with stationary tool-holders being old in the art and a particular description thereof herein being unnecessary.

It will be observed that by turning screw D the tool E may be projected from the holder to any desired extent, and the projection of the tool may be regulated by the distance of the chuck from the tool-holder and by the thickness of the blanks to be operated upon. The extent of movement of the tool toward the chuck is limited and regulated by the adjustment of screw A2. Preferably and as shown the tool-holder is arranged vertically over the chuck, and the tool is lowered and held in contact with the blank in the chuck by gravity of the holder increased by the weight thereof. To bring the tool into operation, the holder may be lifted and then the tool moved over the chuck or the chuck under the tool. rIhen the holder is released and descends by gravity until the tool strikes the blank in the chuck, and as the latter is rotating rapidly the tool immediately begins to cut more or less quickly, according to the hardness of the blank, but always with uniform pressure thereon, the tool operating smoothly and uniformly upon the blank until it has trimmed it su'fliciently to allow the holder to drop until lug contacts with the screw A2. Then the holder may be lifted, the blank removed, and a new one replaced and the operation repeated.

It will be Obvious that no matter whether the blanks be hard or soft the operation is controlled with what might be termed a yielding gravital pressure or feed,7 as contradistinguished from the positive movement imparted by a hand or automatically operated screw-feed. The advantages of this gravital self-adjusting feed I have set out at the outset of this specification.

I do not wish t0 limit myself to the specific construction, application, and arrangement of holder herein shown and described; but

That I claim as new, and desire to secure by Letters Patent, is-

l. The combination of a rotatable chuck, a vertically-movable non-rotatable tool-holder operating by gravity, and removable weights detachably secured to said holder and adjustable means 'for arresting the descent of the holder.

2. In a button-making machine, the combination of the vertically-movable tool-holder, a set-screw for regulating the descent of said holder and a pin for preventing rotation of the holder.

3. In a button-making machine, the combination of the sleeve, the vertically-movable tool-holder therein, the set-screw for regulating the descent of said holder and the pin for preventing rotation of the holderin the sleeve, and the weights for depressing said holder.

4. In a tool-holder, the combination of the vertical sleeve, the holder guided therein and provided with a lateral projection, an adjustable set-screw on said sleeve adapted to engage said projection and limit the descent of the holder, and the weights for assisting the descent of the holder.

5. In a button-making machine, the combination of a tool-holder, the adjustable ltoolclam ping jaws thereof, the quartering-screws for adjusting said jaws, and the adjustable screw and the follower in the holder for projecting the tool f rom the holder.

6. In a button-making machine, the combination of the holder, the tool-clamping jaws F, f, in the lower end of said holder, quartering-screws F', f', for adjusting said jaws, the follower d in said holder, and the screw D for adjusting said follower.

7. In a button-making machine, the combination of the sleeve, the non rotatable holder therein, the tool-clamping jaws F, f, in the lower end of said holder, screws for adju-sting said jaws, the follower d in said holder, and the screw D for adjusting said follower; with the removable weights G, substantially as and for the purpose described.

8. In a buttonmaking machine, the combination of the sleeve, the non rotatable holder therein, the tool-clamping jaws F, f, in the lower end of said holder, screws for adjusting said jaws, the follower (l in said holder, and the screw D for adjusting said follower, the adjustable screw A2 adapted to engage the projection on the holder to limit the descent thereof and the removable weights on said holder to increase the ponderosity thereof.

In testimony that I claim the foregoing as my own I afiiX my signature in presence of two witnesses.

NICHOLAS BARRY, JR.

In presence of- M. HAVERCAMP, MARTIN W. STAPLETON.

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