US428414A - Punching-machine - Google Patents

Description

(No Model.) 2 Sheets'Sheet 1.

J. M. RILEY. PUNUHING MAGHINB.

N0. 428,414. Patented May 20, 1890.

WITNESSES: INVENTDR BY m, ATTYYS.

1s vz-mns cm, FHDYO-UTNQ, WASHINGTON n c (No Model) 2 Sheets-Sheet 2.

J. 1VL-RILEY. PUNGHING'MAGHINE.

140428414. Patented May 20, 1890.

WITNESSES: INVENTDR.

4% John, 4120131 05 BY Ma .ATTYS.

UNITED STATES PATENT OFFICE.

JOHN M. RILEY OF NElVARK, NElV JERSEY.

PUNCHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 428,414, dated May 20, 1890.

Application filed April 5, 1889. Serial No. 306,105- (No model.) i

To all whom it may concern:

Be it known that I, JOHN M. RILEY, a citizen of the United States, residing at Newark, in the county of Essex and State of New J ersey, have invented certain new and useful Improvements in Punching-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, referencebeinghad to the accompanyingdrawings, and to letters of reference marked thereon, which form a part of this specification.

The object of this invention is to obtain a direct reliable central vertical motion to the punch or tool shaft in a vertical punchingmachine in a simple manner.

The invention consists in the improved punching-machine, and the combination and arrangement of parts thereof, as willbehereinafter more fully set forth, and finally embodied in the claim.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the several figures, Figure l is a front elevation of a vertical punching-machine embodying myimprovement, with part of the bed-plate in section. Fig. 2 is avertical section through line as. Fig. 3 is a cross-section through line y. Fig. 4 is a section on line 2, showing the arrangement of a loose cylindrical sleeve on the driving-shaft; and Fig. 5 is a section through line as, Fig. 1, showing a cam-wheel with cam projection secured to the main shaft.

In said drawings, A represents the frame of a punching-machine, in which revolves in suitable bearings '12 n, Fig. 4, a driving-shaft a, provided with loose driving-pulley b, which also serves as a balance-wheel. On this shaft is secured an eccentric 0 (shown in Fig. 2) for operating a tool-shaft d by means of slid ing bearings e e on top of a flat projection 01' on the upper end of the tool-shaft d.

On the upper side of the bearings e is a plate f, secured to the projection d by bolts 9 g, of sufficient length to allow the bearings e e to slide between them on slides or ways 6 6, Fig. 2.

From the upper surface of the plate f extends a rod or shaft h, which moves in bearings in the upper part of frame A and serves as a steadying-guide for the tool-shaft d. To the bottom of the shaft cl is secured an adjustable guide-block and tool-holder 2', with openings in lc, to allow free access to nuts on m, for securing and adjusting the guide-block to the tool-shaft d. This guide-block and tool-holder iis provided on one side with angular projections n n, to slide in corresponding recesses in the frame A, as shown in Fig. 3. Opposite these recesses are secured to the frame metallic bars or rods 0 0, provided with slots on their inner sides adapted. to receive steel bars 19 p, which serve as slides for the other side of the guide-block 2'. These slidebars 19 p are adjustable laterally by means of bolts 0" r, as shown clearly in Fig. 3.

Upon the bottom of the guide-block and tool-holder t is formed an annular shoulders, to receive a punch or tool 15, which is held in position by a set-screw 8. To the bottom of the frame and directly under the punch or tool is secured by any desired means a bed or block to of ordinary construction. Upon the driving-shaft a, and near its ends, are firmly secured collars w w, Fig. 1, to prevent lateral motion or play to the shaft when in operation. Within the bearings on which the driving-shaft revolves are fitted and adj usted loose perforated cylindrical collars Z, extending the whole length of the bearing, and surrounding the main shaft and held in position by the bearings by the rigid collars w w, as shown in Fig. 4, where one of the bearings is shown in section. These collars H are loosely arranged on the shaft and can turn in any direction or be at rest while the press. is in operation. The perforations in the collar 1 allow the lubricating material to come directly in contact with the shaft when a lubricating material is employed; but such lubricating material is not necessary, as the collars being loose on the shaft and free to move in either direction, there could be no perceptible friction, as will be manifest.

In Fig. 5 of the drawings is shown in section an ordinary cam-wheel 3, with cam projections 4 rigidly secured to the shaft a for engaging a rod or bar connected with a pivoted lever connected with the engaging and disengaging clutch mechanism on the endof the shaft for stopping and starting the press, as shown in Fig. 1. The loose driving-pulley is also connected with the clutching mechan- 1sm.

I have not described in detail the clutching mechanism, as I make no claim to it specifically, as any ordinary clutching mechanism can be used.

By providing the punch or tool shaft with the upward extension h and the guide-block 'i all lateral movement in any direction is entirely prevented and a positive and direct central vertical movement is imparted to the punch or tool shaft.

By the use of the eccentric on the main shaft working in the sliding bearings great power and steadiness and uniformity of motion are imparted to the tool-shaft, as by the revolution of the eccentricthe bearings c 6 Will move slightly forward and back between the parts f and a, on which they are adapted to slide.

By means of the screws m m on the guideblock and tool-holder the punch or tool can be adjusted to any thickness of metal to be punched.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

In apunching-machine, the combination of the frame having the notches and bars formed with grooves, the tool-holder having lugs or ribs engaging said notches, and bars fitting in said grooves, the tool-shaft having the clamping-nuts thereon and formed with the fiat projection, the plate having the extension or guiding-stem, the bearings between the plate and projection, the driving-shaft having the eccentric for engaging said bearings, the perforated sleeve on the driving-shaft, and the collars on said shaft, all arranged for operation as described.

In testimony that I claim the foregoing I have hereunto set my hand this 2d day of April, 1889.

' JOHN M. RILEY.

Witnesses:

OLIVER DRAKE, E. L. SHERMAN.

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