US766456A

US766456A - Die-cutting machine.

Info

Publication number: US766456A
Application number: US9974202A
Authority: US
Inventors: Ernest Meyers
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-03-24
Filing date: 1902-03-24
Publication date: 1904-08-02
Anticipated expiration: 1921-08-02

Description

PATENTED AUG. 2, 1904.

E. MEYERS.

DIE CUTTING MACHINE.

APPLICATION FILED MAR. 24, 1902.

4 SHEETS-SBIBBT 1- NO MODEL.

w: TIMES 52 5 A IN VIN r URI No. 766,456. PATENTED AUG. 2, 1904.

E. MEYERS.

DIE CUTTING MACHINE.

APPLIGATION FILED MAR.24,1902.

N0 MODEL. 4 SHEETSTSHEET 2.

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No. 766,456. PATBNTED AUG. 2, 1904. E. MEYERS. DIE CUTTING MACHINE.

APPLICATION FILED MAR. 24, 1902.

N0 MODEL. 4 SHBET8SHEET 3.

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PATENTED AUG. 2, 1904.

E. MEYERS. DIE CUTTING MACHINE.

APPLICATION TILED MAR. 24, 1902.

4 SHBBT8BHBET 4.

N0 MODEL.

IN LZAI' URI Patented August 2, 1904.

ERNEST MEYERS, OF TAUNTON, MASSACHUSETTS.

DIE-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 766,456, dated August 2, 1904. Application filed March 24, 1902. Serial No. 99,742. (N model.)

To (all 1072,07 it may concern.-

Be it known that I, ERNEST hIEYERS, a citizen of the United States, residing atTaunton, in the county of Bristol and State of Massachusetts, have invented a new and useful Improvement in Die-Cutting Machines,of which the following is a specification.

This invention has reference to a machine for automatically cutting a die or similar article; and it consists in the peculiar and novel mechanism whereby the cutting-tool is controlled by a pattern and operated by automatic power-driven mechanism, as will be more fully set forth hereinafter.

In carrying out my invention I support the article to be cut or engraved on a bed moving on ways supported on a suitable frame and reciprocated by a power-driven mechanism, preferably at a faster speed in one direction than in the opposite direction. The tracingstylus and the cutter I mount on a verticallyadjustable swinging frame having an automatic cross-feed and provideautomatic means for lifting the same on the return stroke. I have provided the machine with an alarm automatically indicating the operation of the machine.

Figure l is a front view of my improved die-cutting machine. Fig. 2 is a longitudinal sectional view of the same. Fig. 3 isa top view of the machine, partly in section. Fig. i is a view of the end of the machine, showing the electric circuit connected with the worksupport and the swinging frame. Fig. 5 is a longitudinal sectional view of the bed and the swinging frame, showing the mechanism for automatically lifting the frame on the return stroke. 6 is a view of the frame-lifting device, showing the positions of the rollers on the back stroke. Fig. 7 is a front view of the tracer or stylus and pattern, shown partly in section. Fig. 8 is a front view of the cutter and the work, shown partly in section. Fig. 9 is a top view of a pattern; and Fig. '10 is a top view of a die, the pattern and the die being shown secured to the reciprocating bed.

Similar marks of reference indicate corresponding parts in all the figures.

In the drawings, 1: indicates the frame of the machine, and a ways on the frame, on

which the bed ('6 is supported. The bed a is in screw-thread engagement with the leading screw (4 by means of the bracket The shaft of the leading screw (1 extends longitudinally beyond the frame and has the pinion a secured to the projecting end. The brackets a are secured to the end of the frame a of the machine and support the driving mechanism, having the central driving-pulley a and the loose pulleys a and a". The pinion a connected with the loose pulley a, engages with the gear a on the back shaft a. The gear a, connected with the loose pulley a engages with the pinion a on the back shaft (1., and the pinion a also on the back shaft, engages with the gear (6 which gears with the pinion a on the shaft of the leading screw. Power is transmitted to the pulleys by two belts, one of which is a crossed belt, as is shown in Fig. l. The plain belt transmits power in one direction and the crossed belt in the opposite direction. In the preferred construction the plain belt operates the slow speed of the bed through the pulley u" and the gears 11 a, a a and a and thecrosscd bolt the quick speed through the pulley u and gears (1 a", a, a, and If, by which the leading screw It is rotated to move the bed a outward at the slow speed and inward at a higher speed.

The bed a is connected by the rod 0 to the weighted arm a, pivotally supported on the frame. The hub of the arm a is provided with a gear engaging with the shipper-slide a and with the arms (1 If, which engage with a pin on the weighted arm a. The rod (1. is provided with the two adjustable collars a and a and is connected with the bed (A by the sleeve 11 By this arrangement the sleeve 0' acts on one of the collars to move the weighted arm into or slightly beyond a vertical position, and the weight moves the shipper to move the belts to reverse the direction of the driving mechanism, thereby securing the reciprocation of the bed a The transverse frame 7) is secured to the frame a and extends above the bed (f. The frame .7) is provided with the vertical ways 5, on which the transverse bed 6 may slide vertically. The screw 7), journaled in the top rail 71* of the transverse frame Z), is in screwtransverse bed 12 transverse bed may be vertically ad usted.

The transverse bed 6 is provided with ways ,on which the slide 6 is supported. The slide is in screw-thread engagement with the screw 6 journaled in the bed 6 The slide 6 and the swinging frame are automatically moved on the bed 6 after each cut of the graver or cutter by mechanism operated by the reciprocation of the bed m on which the dogs 6 and I) are adjustably secured, so as to engage with the pivoted arm 6 which is connected with the rocking lever 6 to which the rods 6" 6 are adjustably secured at their lower ends and connected with the. double pawl-and-ratchet mechanism 6 connected by the gears and 6 with the screw 5 The gear 72 and the crank 6 may be connected by the usual spline-and-groove connection with the screw 6 so that when the screw is turned by hand the same may be moved longitudinally on the screw-shaft to disengage the gear I) from the gear I) and permit of the adjustment of the slide and swinging frame 0 without operating the pawland-ratdhet mechanism.

The swinging frame cis pivotally supported at one end on the shaft 0, secured in a bracket on the slide 6, so that the frame will move transversely with the slide and may be swung vertically. The frame 0 forms the support of the cutter 0 and the stylus 0 which in the preferred form (shown in Figs. 4., 7, and 8) are secured to the slotted transverse bar 0 of the swinging frame above the pattern 0 and the work 0, respectively. The milling-cutter and the stylus are mounted in revoluble plates 0 having gears on their peripheral edges, which gears engage with the rack-bar 0 whereby the cutter and stylus may be adjusted to the vertical position or po- I sitions at an angle to the vertical and may then be held in the adjusted position by the clamp-screw 0.

The milling-cutter 0 is secured in a spindle journaled in the plate 0 and provided with the band-pulley 0 connected by a drivingband with the pulley o which is driven by bevel-gears from the pulley 0 journaled on the shaft 0 and driven by the band 0 from any convenient power-driven shaft. The

weight of the swinging frame is nearly counterbalanced by the weight 0 secured to one end of the cord 0, which extends from the swinging frame over a pulley and to the weight 0 The machine-is shown in the drawings with the parts in the positions they occupy when the bed a and the work and pattern on the bed have reached the limit of their inward traverse and the shipper mechanism has operated to reverse the motion of the bed, the work and the pattern, and the outward movement has begun. As the cutter has completed and by the screw 6 theone cut and has to be moved transversely for the next cut, I lift the end of the swinging frame during the inward movement of the bed a by means of the pivoted arm (Z, having the roller cl in contact with the surface d parallel to and moving with the bed (4 In the preferred construction (shown in Figs. 5 and 6) the spindle (Z is adjustably secured, by means of a clamp -screw, in the swinging frame, as indicated in broken lines in Fig. 5. To the lower end of the spindle (Z the bracket (F is secured. On one arm on a line with the spindle. the roller (Z is pivoted, and on the other arm the arm (Z is pivotally secured. The arm (Z is formed so as to swing through a fixed section .of a circle, a suitable stop (Z being provided to hold the arm (Z in the vertical position, as shown Fig. 6, against the movement of the surface (Z The surface (Z is of a width sufficient to support the roller (Z' during the whole of the traverse required to cut the die. It is formed in the shape of a bench and is secured to the bed (f. The

cam-block (Z is adjustably secured to the surface (Z and serves to support the roller d5 and the swinging frame and ease the descent of the swinging frame on the reversal of themovement of the bed a 1 In die-cutting and similar machines where the cutting-tool is controlled by a stylus or tracer traversing a pattern it is essential that the point of the tracer or stylus come in contact with the surface of the pattern to guide the cutter during the process of cutting. To enable the operator to know that the stylus is in contact with the pattern, I interpose between the pattern 0 and the bed (6 of the machine the block 6 of insulating material. I connect one ,pole of the battery 0 or other source of electric energy with the pattern and the other pole through the electric bell e and the switch 0 with the swinging frame 0, as is shown in Fig. 4. WV hen now the stylus is in contact with the pattern and the switch is closed, the .bell will be rung and will continue to ring as long as the contact is maintained.

I do not wish to confine myself to the exact construction of the electric alarm or other details of construction, as some of these may be modified to suit peculiar conditions without materially changing the operation of my machine.

. Having thus described my invention, 1 claim as new and desire to secure by Letters Patent- 1. In a die-cutting machine,'the combination with the bed forming the support of the pattern and the work, and an adjustable camv ously, means for revolving the cutter, and means for indicating when the cutter has completed its work, as described.

2. In a die-cutting machine, the combination with the bed forming the support of the pattern and the work, mechanism for reciprocating the bed with a slow outward and a rapid inward motion, a swinging frame, a cutter and a stylus on the swinging frame, and means for automatically moving the swinging frame with the cutter and stylus transversely to the movement of the bed, means for lifting the swinging arm comprising an adjustable bracket, a roll on the bracket and an arm pivoted to the bracket and provided with a roll, of an electric circuit one terminal of which connects with the pattern and the other with the swinging frame, and an alarm, as and for the purpose described.

3. In a die-cutting machine, a reciprocating bed and a swinging tool-support, a surface connected with the bed, a cam-block adjustably secured to the surface connected with the bed and a pivoted roller-arm adjustably connected with the swinging tool-support, a bracket to which the roller-arm is connected, aroller supported in the bracket and means for reciprocating the bed with a slow outward and a rapid inward motion, as described.

4C. In a die-cutting machine, the combination with the bed a, the surface (Z andithe camblock (5, of the swinging frame 0, the bracket (2* adjustably connected with the frame, the roller d and the pivoted arm (Z having the roller d, whereby the swinging frame may be automatically raised by the pivoted roller (Z by the movement of the bed in one direction and lowered by the movement of the bed in the opposite direction, as described.

5. In a die-cutting machine, the combination with the bed a reciprocated with a slow outward and a rapid inward movement, the swinging frame 0, means for adjusting the frame 0 horizontally and vertically, the cutter c and the stylus c of the revoluble plates 0 the rack-bar c and connections between the revoluble plates and the rack-bar, whereby the cutter and the stylus may be simultaneously adjusted and secured in the vertical or oblique position, as described.

In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

B. S. WEBs'rER, J. A. MILLER, Jr.