US682686A - Punching-machine. - Google Patents

Description

10.682,686.' Patented sept. I7, 190|.

A F. HALL.

PUNCHING MACHINE.

(Lppumion med my 1o, 1901.) (No Model.) 3 Sheets-#Sheet l. 4

No. 682,686. Patented Sept. I7, I90I.

` B. F. HALL.

PUNCHING MACHINE.

(Application led May 10, 1901.)

(No M'odel.) 3 Sheets--Sheet 2.

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Patented Sept. I7, |90I. 6. F. HALL. PUNGHING MACHINE.

(Application file d May 10, 1901.)

3 Sheets-Sheet 3.

(No Model.)

*mi ESSEE.

i UNITED STATE-s PATENT Cruce.

BENJAMIN F. I-IALL, OF SALEMLMASSACHUSETTS, ASSIGNOR 0F ONE-HALF TO ZINA GOODELL, OF SAME PLACE.

PUNol-lilac-MAcl-HNE SPECIFIEGATION-forming part of Letters Patent No. 682,686, dated September 1'7, 1901. Application ledMay 10, 1901. y Serial No. 59,565. (No model.)

To all whom t may concern.-

Be it known that I, BENJAMIN F. HALL, a citizen of the United States, residing at Salem, in the county of Essex and State of Massachusetts, have invented new and useful Improvements in PnnchingfMachines, of which the following is a specification.

This invention relates to improvements in punching-machines particularly adapted for punching or perforating ornamental shoe portions-such, for instance, as foXings, lacepieces, Vamps, tips or toe-caps, or other ornamental parts of boots and shoes. It is also applicable for the purpose of perforating other articles or materials as may be desired.

The invention is carried out as follows, reference being had to the accompanying drawings, wherein- Figure 1 represents a side elevation of the machine, showing a portion .of the frame broken away. Fig. 2 represents a top plan view of Fig. 1. Fig. 3 represents a vertical section of the machine. Fig. 4 represents a horizontal section on the line fi 4, shown in Fig. 3. Fig. 5 represents an enlarged detail end elevation of the die-holder bar and presser-foot bar, showing the presser-foot, work-support, die-plate, die-plate clampingdisk, and feed-point and its carrier in section. Fig. 7 represents an enlarged crosssection on the line 7 7, shown in Fig. 2. Fig. 8 represents an enlarged cross-section on the line 8 8, shown in Fig. 2. Fig. 9 represents an enlarged side elevation of a portion of the feed-point carrier and feed-point, and Fig. 10 represents a piece of leather or othermaterial punched or perforated by my improved machine.

Similar letters refer to similar parts wherever they occur on the drawings. Y Y -f i l In the drawings, A represents the base portion of the frame of the machine, integral with which is cast the gooseneck portion A. To the top of the base portion A is suitably secured the work-supporting plate B.

C is the rotary driving-shaft, journaled in bearings in the frame portion A. e To one end of said shaft is secured, preferably, a cone pulley D, to which a rotary motion is imparted by means of belt-power, as usual. E is a diiferent parts of the hand-wheel or balance-wheel secured to the opposite end of the shaft C for the purpose of adjusting the positions ofthe various working` parts of -themachine previous to 55 starting the same, so as to enable the work to be placed Ain proper position previous to the commencement of the punching or perforatin'g operation.

To the shaft VO is secured an eccentric F, 6o

tically in bearings ct d', forming parts of the 7o forward end of the gooseneck A', shown in Figs. 1, 3, and 5.

H is the die, secured in a suitable manner to a die-holder attached to the lower end of the die-holder bar, as is common in devices of this kind. The said die is made of aforxn or construction to make the desired perforations 'in the goods I, a representation of which is shown in Fig. 10. The construction of said die will of course be varied according to the 8o design of the perforations to be made in the goods.

By the construction above mentioned it will be seen that a vertical reciprocating motion is imparted to the die and its die-holder bar from the rotary shaft C during the operation of the machine. f

The feed device for automatically and intermittently feeding the goods to the die duringthepunching or perforating operation 9o is what is usually termed a four-motion feed and is constructed as follows: It consists of a feed-point carrier or lever K, pivoted onan eccentric-pin L, adjustably secured in a suitable manner in bearings in the gg frame portion A. Said eccentric L projects through a slotted perforation k in the lever K, as shown in Figs. 1, 3, and 9. On the rotary shaft 'C are secured two cams-namely,

M and N, (shown in Fig. 1,) the former servroo ing the purpose of imparting a feed motion to the feed-point carrier K and its 4serrated To the front end of the lever G 65 feed-point K', and the cam N serving the purpose of raising the said feed-point during the feed of the material. A spring O, connected to said feed-point carrier and to the forward portion of the frame A, serves the purpose of moving the feed-point carrier opposite to the line of feed and downward during the release of the respective cams M N from the rear portion of the feed-point carrier K, as is usual in four-motion feeds. By adjusting the position of the eccentric L the position of the feed-point K' can be regulated relative to the upper surface of the Worksupport B, as may be needed from time to time to compensate for the wear of said feedpoint or its connected parts. In connection with such four-motion feed I use a feed-regulating device consisting of an adjustable lever P, pivoted at p to the under side of the Work-plate B, as shown in Figs. 2, 1t, and 8. To the front end of said lever is connected a headed screw p", adjustable in a curved slot b in the work-plate B and adapted to be secured to the latter after being adjusted by means of a thumb-nut P'. (Shown in Fig. 8.) The opposite end of the said lever P is pivotally connected to a feed-regulator rod or bar P", the inner end of which serves as a stop to limit the outward motion of the feed-point carrier after its release from the cam M and while it is being moved by the spring 0 to its outward position.

Q is the presser-foot bar, vertically movable in the bearings a a' in the outer end of the gooseneck A', as shown in Figs. 5 and 6. To said presser-foot bar is attached a collar q, which is held in contact with the upper end of the bearing a' by means of a yielding spring R. (Shown in Figs. 5 and 6, as well as in dotted lines in Fig. l.)

To the lower end of the presser-foot bar Q is adjustably secured a rod Q', to the lower end of which is journaled the rotary presserfoot Q". (Shown in Figs. 5 and G.) The rotary presser-foot Q" is held from contact with the upper surface of the work-plate B, as shown in Fig. 6, so as to allow the material to be readily introduced between said Workplate and presser-foot and also for the purpose of preventing an undue pressure by the presser-foot onto the goods during the feeding and punching operation, thus enabling the work to be adjusted readily during the punching operation.

In a circular perforation in the work-supporting table B is located an annular dieplate S, which is supported upon the frame A and serves to receive the imprint of the die during the punching orperforating operation. Said die-plate is preferably made of brass, and as a portion of its uppersurface becomes worn or defaced it may readily be adjusted by turning it more or less around its axis and securing it in such adjusted position. The

inner surface S' of the said die-plate S is made V-shaped in section, as shown in Figs. 6 and 7, and on top of such V-shaped inner edge is located a circular clamping-plate T, having a conical edge adapted to rest upon the V-shaped inner edge of the circular dieplate ring S, as shown in Fig. 7.

t is a fastening-screw going loosely through a central perforation in the clamping-plate T and screwed into a screw-threaded perforation in the base A, as shown in Fig. 7, and by this means the die-plate may be firmly secured in its adjusted position relative to the die. Should the upper surface of said dieplate become worn or defaced by the punching-die, it may readily be removed, turned over, and secured in such reversed position by means of the clamping-plate T and fasteningscrew t, thus materially increasing the life of said die-plate.

In connection with the Work-supporting table B, I use a suitable gage, against which the edge of the work is guided during the punching operation, as is common in devices of this kind.

The operation of this my improved punching or perforating machine is as follows: The article to be perforated is placed upon the table B,with its edge against a gage thereon, and after the presser-foot is raised it is allowed to drop onto the article by the iniiuence of the spring R. The machine is then set in operation by imparting a rotary motion to the driving-shaft C, causing the die-holder bar and its die to be vertically reciprocated for the purpose of punching or perforating the article and causing the feed device to intermittently feed the said article the desired distance, while the die is raised above the work, and so on during the operation of the machine.

What I wish to secure and claim is- I. In a punching or perforating machine', in combination a frame A, and gooseneck A',

by Letters Patent a vertically-reciprocating die and die-carrier,-

a spring-pressed rotary presser-foot, a fourmotion feed device, a reversible adjustable circular die-plate ring and a clamping-plate for securing said ring in its adjusted position substantially as and for the purpose set forth.

2. In a punching or perforating machine, in combination, a rotary driving-shaft, a kneelever actuated by an eccentric on said shaft and connected to a reciprocating die-carrier, a pair or' cams secured to said shaft, a pivoted feed-carrier actuated by said cam and a spring, and an adjustable feed-regulating device, consisting of an adjustable pivoted lever having one of its ends connected to a bar serving as a stop against the forward end of the feed-carrier substantially as and for the purpose set forth.

3. In a punching or perforating machine, in combination a vertically-reciprocatin g dieholder bar and die, a work-support, an adj ustable die-plate ring and a spring-pressed rotary presser-foot arranged upon a yielding presser-foot bar, having secured to it a collar or projection q, for limiting its downward 682,686 f si motion so as to normally hold said presserof the feed-point relative to the top ofthe r foot from contact with the table and feed- Work-plate substantially as herein set forth point of the feed device, substantially as and described. v

herein seb forth and described. In testimony whereof I have hereunto set I5 5 4. In a punching or perforating machine, my hand in presence of two-subscribing Witin combination a Verticallyweciprocating dienesses.

carrier and die, a spring-actuated presserfoot and a four-motion feed-point carrier actuated by a spring and a pair of cams and piv. l Witnesses:

BENJAMIN F. HALL Io otally hung upon an eccentric-pin capable of ALBAN ANDRII,

` rotary adjustment for adjusting the position THEKLA ANDREN.-

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