US517680A - chase - Google Patents

Description

(No Model.) I 4 Sheets-Sheet 2.

H. A; CHASE.

- ENGRAVING MAOHINE. No. 517,680. Patented'Apr. 3, 1894.

WITNESSES: INVENTOR AT ORNE THE NATIONAL LITHOGRAFNING COMPANY.

WASHINGTON. n. c.

'(No Model.) 4-Sheets-SheeL3L- H. A. CHASE ENGRAVING MACHINE No. '517,;680. Patented Apr. 3, 1894.

wmvsssas: I mvamon j- I Wm 4 T (No'ModeL) A. CHASE. ENGRAVING MQAGHINE.

Patented Apr; 3, 1894 V f 4 SheetsSheet 4.

WITNESSES: 7 i W INVENTOB TN: rum. LMIOGRAPNING ccmuuv wAlnmaroN. b. c

HENRY AQCHA E, on BR 'To aZZ it mrty coacernk ookLrN, ASSIGNOR. To WILLIAM-A. honor: a 00., oF-NnwYoR n. Y.

ENG v N MAC' JN SPEGIFIGATION' forming rat or m gnat 1\ r 5 1 7,eso, dated April 3,1894.

, a 1 Application filed May 29, 1898.

'Be it known that I, HENRY A.CHASE, a citizen of the United States, residing at Brooklyn, in the county of'Kings and State'of New York, have invented a new and usefulv Improvement in' Engraving-Machines, of which the following is aspecification.

My invention relates to apparatus for engraving letters, numbers a nd characters, upon metal work blanks, such blanks for instance as are employed in dating and printing stamps and numbering machines. Heretofore letters, numbers or characters formed upon metal work blanks have been cut or en'- gra'ved by hand, or formed by'a rolling or knurling movement, or have' been stamped up by means of sectional'dies. All of these methods are expensive and more or less unsatisfactory in results and the object of my a side elevation of the same.

front elevation and Fig. 4, a vertical section invention is to expedite and cheapen the pro duction of such engraved metal blanks and also to improve the quality of the work.

In carrying out my invention I make use of a rotary bevel pointed cutter, adapted to act upon the work blank, and the mechanism employed is capable of imparting to the cutter a vertical movement into and out of contact with the work. The cutter and the mechanism'carrying the same is also capable of an all around movement within prescribed limits by means of a ball and socket joint and a depending arm connected therewith on whose lower end is a pointer. A pattern plate'and pattern is employed around and within whose sidewise upouan enlarged scale of the cutter mechanism and the ball and socket oint, and

- Serial No. 475,954. (no model.)

5, illustrates a modified form of mechan-. ism, and Fig.- 6, is a plan view of the pattern and pattern plate. p, .The standard A is supported upon a bed plate A and said standard has an opening in the lower portion of the front through which passes the arm 0. The form of the standard is'show'n by the dotted lines in Figs. 1 and 2.

Upon the face of the standard A, isa slide away c with a lug at its lower end through which passes the screw bolt K. An adjust- 'able sliding head B can move vertically on the slide way e, the position of the head B, being determined by the bolt K. The upper I end of the head B is made asa projecting arm which supports-the adjustable chuck or holder )B', and a clamping bolt 0, passes through a mortise in thearmof the head B into the holder B, to secure the parts together; the mortise providing for the forward and backward adjustment desired. The work blank M is supported by passing its open center 'overa boss projecting from the upturned portion of the adjustable chuck B, and a pivoted clamp-block b, is operated by a cam lever a to clamp and hold the work blank M, while the cutter O, is operating thereon and cutting or engraving letters, figures or charactors;

Upon top of the standard A is secured a plate N, which projects from the face of the standard and'whose outer end is' perforated and concaved to form half of a socket, and the other half of the socket is formed in the under surface of the perforated plate D,which is secured to and upon the plate N. These sockets coincide and receive the ball E at the lower end of the sleeve Eand said ball is free to turn in said socket and the sleeve E to rock therewith. The plate F carries a-depending sleeve F which sleeve setswithin the sleeve E and ball E the plateF being in close proximity to the upper end of said sleeve E. An adjustable sleeve R preferably screw threaded at its respective ends passes through the *plate' F and down through its sleeve F and the same is provided with adjusting nuts or' collars L, L. The nut or collar comes against the upper face of the plate F and the nut or collar L below the lower end of the sleeve F and ball E, at a distance represented by slightly more than the vertical working face of the cutting tool.

Within the adjustable sleeve R, is the driving spindle P, in whose lowerendis provided a taper hole to receive the cutting tool 0. The upper end of the spindle P, is reduced to receive the spindle pulleyJ which is clamped to the spindle by the nut 5. The spindle pulley J rests upon the upper end of the sleeve R, and the lower end of said spindle is preferably made flaring. The spindle pulley is driven by the endless belt T, and a lever f pivoted at 3 to the back of the standard A carries at its outer end a pulley (1 around which the belt T passes to the source of power. A helical spring 76 connected at one end to the leverfand at the other end ,to a stud projecting from the back of the standard acts-to keep the belt T strained or taut. Au arm (3 of curved conformation has connected at its upper end the top plate F and said arm extends aroundback of the standard A and forward through the opening in its front face and. its lower vertical end is provided with an adjustable pointer I. A pattern plate G is secured to the bed plate A upon approximately the vertical center of the driving spindle P as seen in the elevation, Fig. 1, and the surfaceof the said pattern plate is concaved uponian arc struck from the operative center of the ball end E and a pattern H in the form of the letter, figure or character to be engraved on the work blank is fastened in the concave center-of the plate G. A cord it passes over a pulley g from a hook upon the upper end of the arm 0, and at the lower endof this cord h is a weight i, which is almost equal to the combined weight of the arm 0, top plate F and the movable parts sup ported by said plate F, and within the sleeve E, and ball. end E. The object of this is to cause the arm 0 and its end pointer I to bear lightly upon the pattern plate G, so as to be readily moved in any direction by the operator without tiring the hands. Small helical springs 1 connect the opposite faces of the arm 0, with the back edges of the standard and theirobject is to maintain the arm 0 centrally in itsv relation to the standard.

In working the mechanism and for the sake of the illustration the pattern II to be engraved andwhich is secured to the pattern plate G, is a figure 5. (See Figs. 2 and 6.) The operator places a work blank M in position on theadjustable chuck or holder 13 and clamps it in place by the clamp block and cam lever described, it being understood that while. this is being done, the arm 0, plate F, sleeve F, sleeve R, spindle P, cutter O, pulley J',.nuts L L and pointer I are all slightly raised with the pointer I turned to one side 01f the pattern plate G resting on ablock slightly thicker than the pattern plate, the cutter 0 however being run rapidly by the belt T. All now being ready the operatorgrasps the lower end of the arm 0 adjacent to the pointer I and brings the pointer over to one corner of the pattern plate and simultaneously the cutter 0 down upon the work blank. The operator now moves the pointer back and forth and in any desired direction over the pattern plate concave from the respective edges inward to the edges of the pattern, after which the edges of the figure 5 or other letter or character are carefully followed around with the pointer. Meanwhile the cutter operating upon the face of the work blank has been caused to ffollow copy on the reduced scale and the figure 5 is cut or engraved upon the work blank and the same is removed. Another blank M is now clamped in place and a figure 5 engraved on itin like manner. Other figures, letters or characters replace the figure 5 and one another upon the pattern plate as desired. From the shape of the cutter 0 it will be understood that the letters, figures or characters engraved have bases that are somewhat wider than their faces.

In the modification shown in Fig. 5 the arm 0 carrying the pointer I at its lower end is made as a yoke having a socket D' at its upper end. With the socketD' is connected a shaft R whose upper end passesfreely through a ball E received in asocket formed within the plates 7and 8 ontop of the standard A. The ball E is received in thesocket D and it is connected to the small yoke 0 through the baseof which passes the sleeve F. The socket plates D and N are fastened to the standard A andreceive the ball E of the sleeve E through which. passes the sleeve F. The pulley J and wheel blank M are the same as heretofore described. In this modification the hand or hands grasp the lower end of the yoke C andmove it backward and forward or sidewise in a vertical plane, and this movement swings theparts on the central line and the cutter O, in a decreased ratio, the said cutter being caused to follow copy as thepointer is moved around the pattern and over the pattern block in the manner hereinbefore described.

I claim as my invention- 1. The combination with means forholding the article to be engraved, and a pattern plate, of aspindle, a tool carried thereby, abearing or sleeve for the spindle, a universaljoint holding the spindle bearing. and in-which it is movable endwise, an arm connectediwith the spindle hearing at one end, and aipointer carried at its other end, whereby the engraving tool receives a proportional. movement i .dle and passing through the balliand socket device, and means for longitudinally adj use ing said sleeve, an arm connected to said sleeve and adapted to lift the sleeve, spindle 7 ward through said opening therein and ter-.

and cutter vertica1ly, an'd' a stop for limiting the upwardymovemen't, substantiallyas set.

forth. p

I 3. In an engraving machine,'the combination with a rotarycutting device and means for holding the workblank, of a supporting standard having an openingin the face there,-.

of, an arm connected directly with the cutter mechanism and adapted to move the same both verticallyand laterally, said arm ex.- tending down behind the standard and for? minating in a pointer, a pattern plate located in front of the stand ard'and containing apattern around which the pointer'i's to be moved, substantially as set forth.

4. In an engraving machine, the combination with a patternplate, as'pindle and cutter, means for rotating the same, and a support therefor, of an arm connected to the spindle support and extending downward to a pattern plate and adapted to move the cutter in a decreased ratio, and a counterbalance mechani sm for the spindle mechanism and arm,

substantially as specified.

5. In an engraving machine, the combina: tion with a universal joint mechanism,"a s pindle and a cutter and a support therefor, of an pointer, a pattern plate having a concave surarm connected to the spindle support and extending downward and terminating in a face made as an are from the center of the universal joint mechanism and containing a number, letter or character around which said pointer is adapted'to bemoved while the cut- 7 7. In an ongraving machine, .thQCOIDbiIlLr tion with @the standard A and a basetherefor, of the socket plate N connected to the upper end of 'the'standard and projecting therefrom,

the upper socket plate D, the sleeve E, its ball E received within and between said socket plates, the top plate Fandits integral sleeve F passing down within said sleeve and ball, the adjustable sleeve R screw-threaded at its respective ends and passing through theplate F and sleeve F and provided with adjusting nuts L L, the driving spindle) P'passing throughthe sleeve R, the'pulley J and belt T for rotating the same, substantially as set forth. I Y I 8. In'an engraving machine, the combination with the standard A and a base therefor; of the socket plate N connected to the upper end'of the standard and projecting therefrom, the upper socket plate D, the sleeve E, its ball vE received within and between said socket plates, the top plate F and its integral sleeve F passing downwithin said sleeve and ball, the adjustable sleeve R screw-threaded at its respective ends and passing through the plate F and sleeve F and provided with adjusting nuts L L, the driving spindle P passing through the sleeve R, the pulley J and belt T for rotating the same, a curved movable arm C to whose upper end the top plate F is securely fastened, a pointer at the lower end of said arm 0 adapted to bemoved across the face of a pattern plate G and around and within the pattern H, whereby the cutter is moved in relation to the pointer and caused to follow copy and whereby the cutter can, by the vertical movementof the arm, be raised out of or brought into operative contact with the work blank, substantially as set forth.

Signed by me this 10th day of May, 1893.

H. A. CHASE.

Witnesses:

GEO. T. PINCKNEY, HAROLD SERRELL.

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