US813292A - Press-operating device. - Google Patents

Description

PATENTED FEB. 20

J. L. HAVERPIELD.

PRESS OPERATING DEVICE.

APPLICATION FILED MAR.11, 1905.

Witnesses Attorneys UNITED STATES PATENT @FFTQF.

JOSFPH LINCOLN HAVERFIELD, OF MAYFIELD, KENTUCKY, ASSIGNOR TO MAYFIELD MFG. (30., OF MAYFIELD, KENTUCKY.

PRESS-OPERATING DEVICE.

Specification of Letters Patent.

Patented Feb. 20, 1906.

Application filed March 11, 1905. Serial No. 249,609.

To all whom it may concern.-

Be it known that I, J OSEPI-I LINooLN HAV- ERFIELD, a citizen of the United States, residing at Mayfield, in the county of Graves and State of Kentucky, have invented a new and useful Press-Operating Device, of which the following is a specification.

This invention relates to pressoperating devices of that class which are usually employed in connection with balingpresses of various kinds; and it has for its object to simplify and improve the construction and operation of this class of devices.

With these and other ends in view, which Will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts, which Will be hereinafter fully described, and particularly pointed out in the claim.

In the accompanying drawings has been illustrated a simple and preferred form of embodiment of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that the right is reserved to any changes, alterations, and modifications to which recourse may be had within the scope of the invention and without departing from the spirit or sacrificing the efficiency of the same.

In said drawings, Figure 1 is a plan view of the improved device, illustrating the same during the progress of the operation and with the press-plunger operated by the power in advancing position. Fig. 2 is a detail plan view illustrating the device in a further advanced position and with dotted lines illustrating the plunger-operating means in retracted position. Flg. 3 is a side elevation showing the device in the position illustrated. in Fig. 1. Fig. 4 is a perspective view of the cam-plate detached. Fig. 5 is a perspective detail view of the trip-lever detached. Fig. 6 is a sectional detail view taken on the plane indicated by the line 6 6 in Fig. 1. e

Corresponding parts in the several figures are indicated throughout by similar characters of reference.

Upon a suitable base 1, having a wearplate 2, is mounted a supporting stud or upright 3, supporting a plate 4, having a later ally-extending lug 5. A spindle 6, extending upwardly from the stud or upright 3, forms an axis for a rotary head 7, having diametrically oppositely extending arms 8 9. A sweep 10 for the attachment of the draft is connected with the extremity of one of the arms 8, a brace 11 connecting said sweep with the arm 9. Each of the arms 8 and 9 is provided with a downward-extending pin 12, said pins being equidistant from the axis of the rotary head, and upon said pins rollers, as 13, may be journaled for the purpose of lessening the friction of the device when in operation.

The laterally-extending lug 5 of the plate 4 is connected with the wear-plate 2 by a vertical pin 14, upon which is fulcrumed a lever 15, having an upstanding flange 16, said flanged lever constituting a cam-plate which is operated by the rollers connected with the arms of the rotary head. The free end of the lever or cam-plate 15 is supported upon a curved track 17, which extends laterally from the base 1.

A press-plunger or plunger-rod 18 has been illustrated as being disposed for reciprocatory sliding movement upon the base 1, a re tracting-spring 19 being provided for the purpose of retracting the same. Said plunger rod is also provided with lugs 19, adapted to engage stops, as 20, upon the base for the purpose of limiting the extent of retraction. The plunger-rod 18 is connected with the free end of the lever or cam-plate 1.5 by means of a link or pitman 21. Said pitman is provided at one end with spaced plates 22, secured, respectively, to the upper and under sides thereof and connected pivotally with the cam-plate 15 by means of a pin 23, a spacing-block 24 being interposed, as will be seen in Fig. 3 of the drawings. The meeting ends of. the plunger-rod 18 and the pitman 21 are made, respectively, convex and concave,

as shown at 25 and 26, said abutting ends beeing shod with wear-plates 27 and connected by means of link-plates, as 28. The end of the pitman 21 thus forms a socket for the reception of the end of the plunger-rod 18, which being thus articulated will operate with a slight degree of friction.

It will be noted that the retracting-spring 19 and the pitman 21 are connected with op posite sides of the plunger-rod 18, so that any tendency of the plunger-rod to be driven to one side of a straight line by the pitman 21 will be counteracted by the retracting-spring.

A wear-plate 29 is placed upon the base 1 to afford a foundation upon which the plungerrod may slide.

Pivotally supported upon the base at no great distance from the rotary head is a triplever 30, which is approximately of S shape and one end or arm of which rests upon the base 1, while the other arm 31 is offset in an upwarddirection, so as to be disposed in the path of the rollers or engaging devices connected with the arms of the rotary head, while the arms 32 of the trip-lever, which rests upon the base, will be disposed in the path of the lower plate 22, which connects the pitman 21 with the cam-plate 15. The latter, it will be seen, is adapted to be accommodated between the spaced plates 22, connecting the pitman with the cam-plate.

In the operation of the device draft is applied to the sweep 10 in the direction indicated by the arrow A in Fig. 1 of the drawings. As the head 7 is rotated one of the cam-engaging members will engage the flange 16 of the cam-plate 15, thus swinging the latter upon its fulcrum and causing the plungerrod, which is connected therewith by the pitman 21, to be advanced against the tension of the spring 19. The cam-plate thus advances to the position indicated in Fig. 2, where the cam-engaging member is shown on the point of passing out of engagement with the flange 16. As it is greatly to be desired that a stroke of the greatest possible length shall be imparted to the plunger, the camplate may be permitted to advance to a point at which the several pivotal connectingpoints shall be in alinement with each other, thus leaving the device stationary on a deadcenter and incapable of being retracted by the spring 19. A slight advance, however, on the part of the rotary head will cause the cam-engaging member to en age the arm 31 of the trip-lever, tilting the atter and causing the arm 32 of said lever to push the pitman 21 ofl? a dead-center, and thus enabling the spring 19 to retract the plunger and to resiaae store the parts to normal position and plac-' ing the flange of the cam-plate directly in the path of the next camengaging member, whereby the operation will be repeated.

By the device constructed as herein described the press-operating device will be operated twice during each rotation of the head 7. A great leverage will be exerted on the cam-plate, said leverage increasing as the cam-engaging member moves in the direction of the outer end of the cam-plate, thus applying the greatest power at the end of the stroke or movement of the plunger when it is most needed. I

The construction of the device is simple and inexpensive, and it may be readily applied to and used in connection with presses of ordinary construction.

Having thus described the invention, what is claimed is- In a device of the class described, a head supported for rotation and having radiallyextending arms provided with downwardextending cam-engaging members, a camplate fulcrumed eccentrically to the rotary head and having an upstanding flange disposed in the path of the cam-engaging members, a reciprocatory plunger, a pitman having one end connected with said plunger and its other end with the free end of the cam plate, and a cam-lever pivotally supported adjacent to the rotary head; said cam-lever having a curved arm offset upwardly and disposed in the path of the cameng'aging members, and an oppositely extending curved arm disposed in the path of one of the 1 plates connecting the pitman with the camplate.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

JOSEPH LINCOLN HAVERFIELD.

Witnesses:

J. C. SPEIGHT, H. O. NEALE.

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