US1692454A - Apparatus for perforating inscriptions, ornamentations, or the like on sheet material - Google Patents

Description

Nov. 20, 1928.

IONS,

J. LEVY APPARATUS FOR PERFORA'I' ING INSCRIPTIONS, ORNAHENTAT OR THE LIKE, ON SHEET MATERIAL Filed March 22. 1926 4 Sheets-Sheet l INVENTOR Joseph Levy BY A oRNEY Nov. 20, 1928.

r J. LEVY APPARATUS FOR PERFORAT ORNAMEN'IATIO RIAL ING INSCRIPTIONS NS, /OR THE- LIKE, ON SHEET MATE 4 Sheets-Sheet 2 Filed March 22, 1926 INVENTQR' Jgsep/jlevy BY A M f" ATTORNEY 1,692,454 ORNAMENTA'IIION EET MATERIAL Filed Ma,r"ch 22, 1926 J. LEVY ING INSCRIPTION Nov. 20, 1928.

APPARATUS FOR PERFOHAT S, v OR THE LIKE, 0N SH 4 Sheets-Sheet Nov. 20, 1928. 692,454

- LEVY J. APPARATUS FOR PERFORATI NG INSGRIPTIONS OHNAMENTATIONS, OR THE LIKE, ON SHEET MATE AL Filed March 22, 1926 4 Sheets-Sheet 4 INVE"NIIT QR Joseph Zevy %ATT0RNEY Patented Nov. 20, 1928.

TES-

aosnrn LEVY, or BROOKLYN, NEW YORK.

' 1.692.454 PATENT OFFICE.

APPARATUS FOR PEBFORATING INSORIP'TIONS, OBNAMENTATIONS, OR THE LIKE ON" SHEET MATERIAL.

2 Application filed March 22, 1926. Serial No. 96,544.

This. invention relates to methods and devices for perforating sheet metal and contemplates the provision of an improved apparatus and method for perforating legends, symbols, inscriptions, and ornamentations on sheet metal in making display and ornamental devicessuch as signs, lamp shades, and the like articles.

One of the objects of the invention is to rovide an apparatus of the character described which shall be adapted to perforate flat sheet materials in such manner as to leave the material worked upon substantially flat after the perforation operation has been performed thereon.

Another object of the invention is to lprovide an improved method for producing articles of the character described, havin a simple or intricate perforated legend, 1n-- scription, or ornamentation, which shall be simple, easy and comparatively cheap to carry out.

A further object of the invention is to. provide an improved perforating apparatus of the character described comprising few and simple parts comparatively cheap manufacture, easy to manipulate, and practical and efficient in'operation to a high degree.

Other objects of this invention will in part be obvious and in part hereinafter pointed out. a

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts-which will be exemplified in the construction hereinafter described and of which the scope ofapplication will beindicated in the following claims. In the accompanying drawing, in which is shown one of the various possible illustrative embodiments of this invention,

Fig. 1 is a side elevational view of a perforating machine for carrying out the 1mproved method embodying the invention.

Figs. 2 and 3 are respectively, top plan, and

' side elevational views thereof.

Figs. 4' and 5 are cross-sectional views taken on lines 4 4 and 55 respectively, in Fig. 3.

Fig. 6 is an enlarged cross-sectional view showingin detailthe punch and die.

Figs. 7 and 8 are plan views showing a. block and script form of sign, respectively.

Fig. 9 is a side elevational view of the sign shown in Fig. 7 4

portion 16 ma Fig. 10 is an enlarged detail view of a frag mentary portion of the sign shown in'Figl 7 taken along line XX in said figure, Refer n detail to t sheet perforating method embodying the in-v vent-ion. The apparatus 10 is seen to comprise drawingflO de- I notes an apparatus for carrying out the novel mounted on the lower jaw 12 on the front end thereof, apunch die 13; jaw 12 of said head there is secured, in any suitable manner as by means of bolts 14, a pair of spaced members 15 which form a slide way for a vertically movable plunger 16, the latter eing adapted to the lower portion 16 thereof in cooperative alignment with said die 13. ,Said plunger beprovided with a'recess'16 for receiving t well understood manner, as by a clamping-set Oh the upper" carry a punchlZ on e punch 17 said punch being I removably secured to said portion 16 in any screw 32. The upper portion of said plun er 16 pivotally connects through a knuc e,

18 with the lower end 19 screw19, the upper end 19 of said screw bemg carried by the connecting end 20 of an seen from the drawing, comprises a left and of an adjusting I eccentric strap 20. The adjusting screw 19 as right double ended screw having'a head 19 formed in the mid-portion. thereof whereby the said screw 19 may adjust the plunger and punch relative to the eccentric strap 20 so as to set the punch 17 in proper cooperative relation to the die 13. Said eccentric strap may be of any suitable construction and is mounted on an eccentric disc 21 secured to the mid-portion of a drive shaft 22 positioned over the plunger 16. For mounting saidshaft, journalbearings 23 are provided on the outer or forwardly extending portion 24 of a bearing'plate 24. I

As shown in the drawing, the rear portion 24 of said plate 24, is pivoted as at 25 to permit limited movement of the and lowering of said drive purpose'hereinafter described. The bearing plate 24 is normally held in a raised position by suitable resilient means, such as compression springs 35, so that the drive shaft 22 and the plunger 16 hold the punch 17 while reciprocating, in a non-cooperative position relative the die'13 to permit the insertion, removal plate for raising f shaft 22 for the and free movement therebetween of a sheet of material 48 to be perforated with a legend,

inscription, symbol or ornamentation 49*. To

7 bring the punch 17 and the diel3 in an effec-.

tive and cooperative alignment, meansfor depressing the plate 24 may be provided. Said means are shown in Figs. 1 and 2, and comports 38 projecting up from the punch head prise a. cam 36 extending over the plate 24 and abutting the upper side of the latter. Said cam hasan actuating rock-arm 37. and-is trunnioned between a pair of upright sup- 12 adjacent the upper jaw 12. Swinging the arm 37 clockwise (see Fig. 1) causes the cam 36 'to depress, the plate 24 and is effective to bring the punch 17 in cooperative perforat- I ing position to the die 13.- An adjustable .screw stop 39 may be provided between the plate 24 and the punch head 12 for limiting Said cammingfmeans ma include a tensionsprin secured to the rec end of therock arm 3 the other end of said spring being anchored to .a forwardly extending brace 41 mounted on the upper punch jaw 12 so as to normally retain the arm 37 and cam 36 in position to raise the mob 17 from its effective coo ration with t e die 13. Secured to the.

en of said arm and extendin rearwardly there is a flexible cable 42-whic passes over sheaves 43, the latter bein' mounted for rotation on the rear portion 0 the punch head as shown in Figs. 1 and 3. Said cable 42 extends downwardly and'is secured to the mid-portion of a foot lever or treadle 44 which has one end 44 thereof fulcrumed at 45,-so that on depressing the other end 44 of said treadle, ten

sion is, applied to the cable against the action of thesspring 40 for rocking the arm 37 to lower the punch 17 into its efiective cooperative position with the die 13.

A stripper plate 42 through which the punch 17 passes, may. be supported from the upper jaw 12 of the punch head 12 to extend a ove the die 13 for facilitating the withdrawal of the punch after perforating the sheet 48, in the well understood manner.

For applying uniform power to the drive shaft 22, a suitable fly wheel 26 may be secured on an overhanging end 22 of said shaft and suitable driving means and transmission may be provided for rotating said shaft, as for example, the electric motor 27 having a drive pulley 28 which is coupled through a belt 29 to a drive pulley 30, the latter being secured to the other overhanging end 22 of the drive shaft 22. Said motor may be mountthe pattern.

extending we ed on a pedestal 31 integrallyformed on the rear upper end of the punch head 12 as shown in Figs. 1 and 2. y

A work bench top 33 supported by suitable brackets 34 mounted on the lower jaw 12 of the punch head, may be disposed to extend between the punch jaws, thetop portion 13" of v the punch 13 preferably being made to extend through an opening 33 of said work bench top so that the upper surface thereof is positioned to lie in level alignment with the top surface of the die portion 13.

A device D for guiding the operations of perforating the sheet 48 to correspond with a simple or intricately designed pattern such as a legend, symbol, inscription or ornamentation 49 carried on a template or drawing 60, may be mounted on the bench top. 33 adjacent the punch and die. Said device may either comprise a pantogra h structure of any well understood construction for enlarging or reducing the pattern to be transferred from the template to the sheet 48, or as shown in the drawing, the device D simpl provides means for transferrin an equiva ent facsimile of carry the sheet 48 during the perforating operation between the punch 17 and die 13, one

edge portion of said sheet being demountably secured to an angle bar 50 of the device D by spaced, wing-screw clamped fittings 57, the

aid device D is adapted to art of said device and rides on another ang e bar 52 extending v transverse to the bar 50. The carriage 51 may be provided with a pair of spaced rollers 51 and an intermediate roller 51", said rollers being adapted to ride on the opposite surfaces of the .upstanding web 52 of said angle bar 52. The device D also includes a second carriage 53 which may be of similar construction to carriage 51 for carrying the angle bar 52, said carriage 53 having spacedrollers 53 and an intermediate roller 53", the latter roll- 1 ers being 'ada ted to ride on the upwardly 54 of a bar 54 which is mounted on the work bench top 33 to extend substantially parallel to the bar 50. The free end 52" of the angle bar 52 may be provided on the under-side thereof with a projecting caster serving as anti-friction bearing for retaining the bar above the work bench surface so as to make said carriages easily move able with respect toeach other.

The improved method for perforating the sheet 48 with a legend, inscription, symbol or ornamentation 49, will now be described. With the sheet '48 secured in position to the legend or inscription thereon in the desired configuration is placed on the bench top 33.

By means of an indicator 55 having a handle 56 mounted to extend from the carriage 51, said template is positioned to correspond with the length and width of the sheet 48. The

movement of the indicator 55 in various directions may be easily made by guiding the handle 56, the carriage 51 permitting transverse movement with respect to the length of the punch head and the carriage 53 permitting movement parallel thereto. plate 60 after being set relative the sheet 48,

. is preferably secured in position on the table top to prevent accidental movement thereof, and power is then applied to the motor 27 of the apparatus 10 for reciprocating the punch 17 their ineffective of the letters,

ince the cam and arm are normally in osition, the punch 17 does not cooperate with is permitted to be freely moved between the unch and the die without being perforated.

he indicator 55 is now guided to outline one as for example A. c On depression of the treadle 44, the arm 37 and the cam 36 swing the plate 24 down lowering the punch to its cooperative position with the die 13. As the punch 17 is reciprocated with the plunger 16,-th'e indicator is guided to outline -the legend or inscription on the template or drawing 60. For efiicient operation it has been found that the punch should be about .045 inches in diameter and operated to make tour, as shownin a has been found that such sheets can be perforated with any desired legend, inscription 0r ornamentation, without buckling or bending the sheet substantially the same flat shape as it had at the beginning of the perforatingoperation,

I and a dominant feature of the invention resides in the adaptation of the method and apparatus' above described, and the arrange ment, cot-action and control of the-various parts thereof to the perforating of comparatively light sheets ofmetal of various gauges where the maintenance of the fiat shape and production of substantially smooth perfo- [rated edges is essential in the finished article. It will be noted that the apparatus and the arrangement of-the parts thereof is such as to-require comparatively little skill to operate the same or to carry out the method above described in a satisfactory manner. As signs and articles of like character having legends orornamentations are either of standard form or of special design to serve some spe- The temthe die 13 and the sheet 48 so that it leaves the apparatus in cial purpose, the apparatus and method above described can be employed with the same efiiciency and economy either to produce a large number. of articles or one or several units of particular specifications, in this way making commercially possible the production of special designed units' which have heretofore required either'expensive and laborious hand operation of skilled mechanics or expensive specially made dies.

In Fig. 7 the legend comprising the printed letters Ideal, 49, is perforated as shown in the blocked-in lines, provided only adjacent the edge portions.

In Fig. 8 the inscription shown comprises the script word Beatone, 149, which" is the perforations being formed of a single continuous row'of perfo rations- It will thus be seen thatthere is provided. a

devlce in which the several objects of this in vention are achieved and which is well adapt ed to meet the conditions of practical use.

As various possible embodiments might be madeof the above invention and as various changes might be made in the embodiment above set forth, it is to matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention I claim as new and desire to secure by Letters Patent 1. An apparatus of the charac'ter'described comprising a punch head having a lower and upper Jaw, adie mounted on the lower jaw, a punch normally. supported for sliding movement on the upper jaw in cooperative relation to said die,

mounted on the punch head, and means for swinging said eccentric means to raise the be understood that all eccentric means for reciprocating a said punch, said means being pivotally punch into. a non-cooperative position relai tive to the die while reciprocating the punch to and from the die for movement of sheet punch and the die.

2. An apparatus of the character described permitting the free comprising a punch head having a lower and I upper Jaw, a die mounted on the lower jaw, a

punch normally supported for sliding move 'ment on the upper jaw in cooperative relation eccentric means for reciprocating 1 said means being pivo tally mountto said die, said punch, ed on the punch head, means for swinging said eccentric means to raise the punch into a non-cooperative position relative to the die while reciprocating the punch to and from the die for permitting the free movement of sheet die, the reciprocating means to bring the punch material between the punch and the material between the and foot operated means for returning and die into normal cooperative relation while the punch is moving to and from the die.

3. An apparatus of the character described for cutting out designs in sheet material to correspond to a given pattern comprising a punch head including a punch and die, a

I v for cutting out designs in sheet material to correspond to a given pattern comprising a punch-head, a punch and die mounted in cooperative relation on said head, a work-bench having the top thereof positioned adjacent the die, said punch being supported on the punch-headfor reciprocation to and from the die, eccentric means for positioning the punch in a non-coacting relation to the die while in motion to and from said die, and a device mounted on the bench top having means for carrying sheet material between the punch and the die and means substantially in the same plane with said device for guiding said carrying means to correspond toa template.

5. An apparatus of the character described for cutting out designs in sheet material to correspond to agiven pattern comprismg a C-shaped punch-head having a lower and upper jaw, a die mounted on the lower jaw,

- a punch normally supported for sliding movement on the upper aw in cooperative relation to'said die, eccentric means for reciprocating said punch, said means being pivotally supported on said punch-head, a work bench having the top thereof substantially level with the top of the die, a device mounted on the bench top including movable means for guiding sheet material between the punch and die and means substantially in the same plane with said device for directing said guiding means to correspond to a pre-determined pattern, means for swinging the reciprocating means to raise ,the punch into a. noncoacting position relative 'to the die while reciprocating the punch to and from the die for permitting the free movement of the sheet material between the punch and .die, and

manually operated means for returning the reciprocating means to bring the punch and die into normal cooperative relation with the punch moving to and from'the die.

6. In an apparatus of the character described, a punch-head, a punch and die mounted in cooperative relation on said head, a

said punch normally supported for sliding movement, eccentric means for reciprocating said punch pivotally mounted for limited movement on the punch head, means for varying said limited movementto regulate the adjustment of the cooperative relation of said'punch and die, andmeans for swinging said eccentric means to raise the punch into a non-coacting position relative to the die while reciprocating the punch to and from the die.

'7. In an apparatus of the character described, a' punch-head, a punch and die mounted in cooperative relation to said head, said punch normally supported for sliding movement, means for reciprocating said punch, a'bearing plate having one end thereof pivotally mounted on said punch head, said reciprocating means being mounted on said plate for limited movement therewith, an adjusting screw positioned between the plate and the punch head for regulating the effective coaction of said punch and die, and

spring means normally effective to swing said plate for raising the punch into a non-coactive position relative to the die'while reciprocating the punch to and from the die.

8. In an apparatus of the character described, a punch head, a punch and die mount ed in cooperative relation on said head. said punch normally supported for sliding movement, eccentric means for reciprocating said punch pivotally mounted for limited movement on the punch head, and means for swinging said eccentric means to raise the punch into a non-coactingposition relative to the die.

9. In an apparatus of the character de scribed, a punch head, a punch and die mounted in cooperative relation onsaid head, said punch normally supported for sliding movement, eccentric means for reciprocating said punch mounted for limited movement on the punch head, and means for swinging said eccentric means to raise the punch into a noncoacting position relative to the die.

10. In an apparatus of the character de scribed, a punch head, a punch and die mounted in co-ope-rative relation to said head, said punch normally supported forsliding .movement, means for reciprocating said punch, a bearing plate pivotally mounted on said punch head, said reciprocating means being mounted on said plate for movement therewith, and means for moving said plate toward and away from said die whereby said punch and die may be brought into and out of co-aeting relation.

JOSEPH LEVY.

In testimony whereof I aflix my signature.

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