US1734024A - Method of lubricating perforator presses - Google Patents

Description

Oct. 29, 1929. J. T. WRIGHT METHOD OF LUBRICATING PERFORATOR PRESSES 2 Filed- Aug. 17, 1927 Patented Oct. 29, 1929 UNITED STATES PAra rhormone.

.rosnrn r. WRIGHT, or CINCINNATI, OHIO, ASSIGNOR TO THE J. r. WRIGHT COMPANY,

or CINCINNATI, OHIO, A CORPORATION or OHIO METHOD or LoBItIcArINernI FoRAron r anssns Application filed August 17, 1927. Serial No. 213,665. I

This invention relates to a method of lubricating a plurality of punch pins of a line perforating machine, whereby the shank portion of the pins in their reciprocating motions are constantly lubricated at a point above the perforating or cutting extremities thereof to lubricate its surface guidingly moving within apertures in a stripperbar and to a degree which will not result in a 0 distribution of the lubricant to the cutter or die ends of the perforator pins which if permitted would be conveyed to and soil the paper perforated.

An object of the invention is to provide a lubricating pad in juxtaposition to a line or row of perforator punch pins to engage the shank portions thereof and preferably disposing the pad longitudinally within a guide or stripper bar through which the perforator pins pass.

Further advantages and features of the invention will be more fully set forth in the description of the accompanying drawings illustrating further embodiments of the invention, in which: 7

Figure 1 is a sectional perspective view of a perforator or punch carrying cross head and a top View of the work supporting table of a perforator press of conventional type with the improved method of lubricating the perforator pins incorporated.

Figure 2 is an enlarged cross section through the horizontal stripper bar through which the perforator pins pass and are reciprocated.

Referring to the drawings, 1 indicates the table of a conventional type of perforator press carrying a die plate 2 which is removably recessed in the table and for line perforating is provided with a row of apertures or die holes 3 appropriately spaced for cooperation with the punch or perforator pins or needles 4 dependingly sustained from a reciprocating cross head 5. The cross head 5 is guidingly mounted at its opposite ends above the table and reciprocated in any well known manner, detailed illustration thereof not being made herein as it does not concern the present invention.

The punch or perforator pins each are headed and socketed within a retaining bar 6 preferably of angle form fixed to the cross head and held against longitudinal displacement by a clamping or backing bar 7 held in place by a series of thumb screws 9, the mount- 5 ing of the needles or pins upon the cross heads following the prevailing methods.

A stationary cross or bridge bar 10 extends overand is spaced from the table in rear of the cross head providing a rigid support 66 for a stripper bar 11 which extends forwardly between the cross head and table, its forward end being oflset and apertured, the apertures guidingly receiving the perforator pins to maintain their alignment with the apertures of the die plate. The ofiset at the forward end of the stripper bar provides a ledge and shoulder in rear of the perforator pins serving as a pocket for holding a wick or lubricating pad 12 bearing against the rear side ('6 of the perforator pins immediately above the guioleapertures on the stripper bar for administering the lubricant with the reciprocating action of the pins to the rear sides of the pins and to a degree which will not result 7.5 in any of the lubricant being conveyed to the cutting or die extremities and carried to the paper to be perforated which would soil the paper. The pad engaging the rear or only a small portion of the circumference of go each of the pins thus distributes a minute quantity of lubricant upon the pin surface so as to sufiiciently lubricate the shank portions sliding within the apertures in the stripper bar relieving the pins of friction and g5 wear in their reciprocating motion through the bar, as any perceptible wear of the pins or guide apertures destroys the alignment and registration of the pins with the aperv tures in the die plate, resulting in punching a so ragged and oblong hole. 7

Having described my invention, I claim:

1. In a machine of the class described, a reciprocating cross head, one or more perforator pins dependingly sustained from said T cross head, a stationary stripper bar beneath the cross head having apertures therethrough for guiding the perforator pins, and a lubricant distributing pad mounted on said stripper above the pin guiding apertures and bear- 1 00 ing against the shank portion of the pins for In ricating the pins in their reciprocating action at a point above the cutting ends of the p 2. In a machine of the class described, a reciprocating cross head, perforator pins dependingly sustained from said cross head, a stationary stripper bar beneath the cross head having apertures therethrough for guiding the perforator pins, and a lubricant distributing pad mounted within said stripper and bearlng against said perforator pins.

, In Witness whereof, I hereunto subscribe m name.

' JOSEPH T. WRIGHT.

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