US305605A - engkaving and chasing machine - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

H. P. KENT.

ENGRAVING AND CHASING MACHINE. No. 305,605. Patented Sept. 23, 1884..

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(No Model.) 3 SheetsSh eet 2.

. H. P. KENT.

ENGRAVING AND CHASING MACHINE.

Patented Sept. 23, 1884.

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(No Model.) 3 Sheets'She.et 3. v 'H. P. KENT. EIVGrRJQJTIlVG AND CHASING MACHINE.

No. 305,605. Patented Sept; 23, 1884.

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UNITED STATES PATENT @rrrca.

HUXHUM l KENT, OF PROVIDENCE, RHODE ISLAND.

ENGRAVI NG AND CHASING MACHINE.

{SPECIFICATION forming part of Letters Patent No. 305,605,.dated September 23, 188%.

(X model.)

1'0 rt/Z who/it it may (Jo/warn:

Be it known that I, HUXHUM l. KENT, of the city and county of Providence. State of 'thode Island, have invented a new and useful Improvement in Engraving and Chasing Machines; and I hereby declare the following to be a full, clear, and exact description of the same, reference being hadto the accompanying drawings, forming part of this spccilieation.

This invention has reference to an im p rovement in machines for cutting or chasing parallel lines or grooves on jewelry, so as to form thegroundwork for other ornamentations; and

it consists in the new and peculiar mechanism by which the machine is made to operate automatically, as will be more fully set forth hereinafter.

Figure 1 is aside view of the machine. Fig. 2 is a top View of the same. Fig. 3 is an enlarged face view of the slide, showing the pattern and the plate to be engraved secured thereto. Fig. 4 is an enlarged view of the rest in which the cutter and the guide are secured, and the reciprocating slide in which the work and pattern are secured. Fig. 5 is a view of a blank engraved on this machine, and Fig. (i is a view of the finished blank. Fig. 7 is an end View of the machine.

In the drawings, A is the bed-plate; B, the

"and all spaces to be left blank are raised on a line with the outer surface of the pattern. The plate to be engraved is secured in the ad justablejaws y.

H is a standard onwhich the rest it is supported in proper ways, and on the same the graver h and the guide-finger 71% are adj ustably secured in the tool-stock h. The rest h is connected with the horizontal screw I,having on one end the ratchet-wheel 1', and on the other end the crank i. The tool-stock h is pressed so that the guide-finger h will bear against the 5 5 pattern G by the spring h. On the front of the tool-stock h the arm K is secured, which extends downward, ending in a curve.

It is a hinged stop, which, when in front of the arm K, keeps the graver from contact with the plate to be engraved.

it" is an arm extending down from the reciprocating slide F, the lower end of which is provided with the bent arm 7;", provided with two adj nstable screw-bolts.

The operation of this part of the machine is as follows: \Vhen the slide F, carrying the pattern and the plate to be engraved, reaches thelower end of its traverse, the guide-finger h is bearing on the outer surface of the pat- 7o torn, and the graver is off from the plate to be engraved. At this time thenpper screw of the arm k comes in contact with the hinged stop 7; and raises the other end of the stop in front of the arm K, thus holding the tool-stock back and allowing the slide F to rise, with the graverkept off from the plate. Then the slide F has nearly reached the upper end of its trayerse,the lower screw of the arm 7;" coinesin contact with the hinged stop It and releases the arm, so that now the graver is controlled by the guide-finger h", thus permitting the graver to cut the lines onlyin one direction and free to be moved laterally the space of one line. This lateral motion is performed by the ratchet-and-pawl device shown in Figs. 1 and 2, in which L is a connecting-rod hinged to the slide F and the hinged lever Z, the other end being provided. with the spring-pressed pawl Z, en gaging with the ratchet-wheel i, secured to the 0 screw I, which is secured in a nut in the slide h, carrying the tool-stock At each reciprocation of the slide F the pawland-ratehet device partially turns the screw I and moves the i the same. This shipper is provided with the means of the spring (Z thus holding the clutch crank i.

in contact with the driving-head. To the slide h the rod (Z is secured, which, when the slide has moved the required width of the plate to be engraved, comes in contact with the latch 12 and disengages the same. The spring d now draws the shipper d, and with it the clutch D, backward, disengaging the driving orband wheel 0 from the driving-head E and stopping the machine. An alarm may be secured to the shipper to notify the operative that the plate is completed.

Theoperation of the machine is as follows:

The proper pattern and plate to be engraved being secured to the reciprocating slide F, the guide-finger h and graver h are adjusted in the toolstock 7r; -The slide it is now turned back to the left-hand edge of the pattern by the The shipper is now drawn forward to connect the clutch, the slide F now descends, the graver, guided by the guide-finger and pattern, cuts one line. When-at the end of the downward stroke, the hinged stop 76 is brought in front of the arm K, holding the graver off from the work. The slide now raises the ratchet device, turns the screw I, and moves the guide-finger and graver the distance of one line to the right, the arm Kis released, and the graver cuts another line at the next descent of the slide F, until the whole width of the plate is engraved, when the rod (1" disengages the shipper-rod d, and the same releases the clutch D, thus stopping the machine. By thus operating the machine, feeding, starting, and stopping the same autoniatically one person can attend a number of machines and a large amount of engraving can be produced.

I am aware that machines have before my invention been used to engrave by line-engraving, having a graver controlled by a guide passing over a pattern but such machines were not continuous or automatic in their operation.

Having thus described myinvention. I claim as new and desire to secure by Letters Patent 1. The combination, with the reciprocating slide constructed to carry the pattern and the plate to be engraved, and the tool-stock in which the graver and guide-finger are secured, of the ratchet-wheel z, the pawl Z, lever Z, and connecting-rod L, constructed to automatically move the tool-stock, as described.

2. The combination,with the slide h andthe driving-shaft of an engraving-machine, of the clutch D, the shipper d, the latch d, and rod (i constructed to disengage the clutch automatically, as described. a

3. The combination with the base carr in the standards Band H, and the latch d, having the spring (Z of the driving-head E, carrying the band-wheel O and the clutch D, the adjustable jaws g; the rest h, carryingthe toolstock If, having the graver and guide, the shipper d, the screw I, carrying theratchetwheel and crank, the pawl Z, connecting-rod L, and lever Z, and the arm K, the hinged stop is, and arms 70 k all constructed and arrangedto operate substantially as set forth.

In Witness whereof I have hereunto set my M. F. BLIGH, J. A. MILLER, Jr.

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