US3713171A

US3713171A - Penholder for chart recorders

Info

Publication number: US3713171A
Application number: US00793151*A
Authority: US
Inventors: A Schepartz
Original assignee: Individual
Current assignee: Individual
Priority date: 1969-01-22
Filing date: 1969-01-22
Publication date: 1973-01-23
Anticipated expiration: 1990-01-23

Abstract

An improved device for holding lettering pens on chart recorders that is pivotally connected to the recorder and accommodates a self cleaning lettering pen having an integral ink well that requires no remote ink supply or siphon line.

Description

United States Patent [191 Schepartz 1 Jan. 23, 1973 [54] PENHOLDER FOR CHART 2,835,549 5/l958 Murdoch eta]. ..346/l39X RECORDERS OTHER PUBLICATIONS [76] Inventor: Abner I. Schepartz, 170 Windmill RoadWiHow Gmvepa. 19090 Fitzpatrick, W. 1.; Pen For Chart Recorder; IBM Technical Disclosure Bulletin, Vol. ll, No. 3, August Jan. [211 App]. No.: 793,151

Primary Examiner.loseph W. Hanary 52 vs. Cl. ..346/l39 c, 346/140 and [51] Int. Cl. ..G01d 15/16 581 Field ofSearch ..346/l40, 139;33/34,35 [57] ABSTRACT An improved device for holding lettering pens on References Cited chart recorders that is pivotally connected to the UNITED STATES PATENTS recordenand accommodates a self cleaning lettering pen having an integral ink well that requires no 1,979,713 I l/l934 Smulski ..346/139 X remote ink supply or siphon line. 1,630,297 5/l927 Heesch 2,078,763 4/1937 Hubbard ..346/1 39 1 Claim, 3 Drawing Figures PATENTEDJAI 23 m5 INVENTOR ABNER I. SCHEPARTZ Rib I BY K! ATTORNEYS PENIIOLDER FOR CHART RECORDERS A non-exclusive, irrevocable, royalty free license in the invention herein described, throughout the world for all purposes of the United States Government, with the power to grant sublicenses for such purposes, is hereby granted to the Government of the United States of America.

This invention relates to a device for holding a standard reservoir type lettering pen and more specifically for holding a reservoir type lettering pen for use on chart recorders attached to spectrophotometric and other analytical instruments.

The devices presently in use have a number of deficiencies. In most cases, both the pen and holder are made of plastic and by necessity they are made so that when the pen is inserted into the holder some force is needed to provide a good friction fit to prevent leakage of ink. This often leads to a fracture of one or both components. Cleaning a clogged pen is also a nuisance. It is almost impossible to clean the pen with a wire because its position above the recorder leaves very little clearance space. Consequently, the pen has to be removed and cleaned and when it is replaced the siphon feed for the ink has to be reestablished. Establishing the siphon from a well is another inconvenience of the present devices. This is especially so if the recorder unit is mounted inside a housing accessory making the well inaccessible. However, it is not deemed necessary to dwell further on the deficiencies of the devices presently in use since these deficiencies are well known to those skilled in the art.

Unlike the devices presently in use the device of this invention is made of metal, not plastic and requires no siphon line or remote ink well. It will accommodate any standard, easily available lettering pen. A lettering pen having its own cleaning plunger and integral ink well can be used facilitating its removal and replacement for cleaning and refilling with ink. Different colored inks can be used simply by changing pens. In addition, no force is required to place the pen in the holder and it is locked in position by merely tightening a lock screw.

It is an object of this invention to provide a novel, simple, reliable, trouble-free, convenient writing system for strip-chart recorders.

Another object of this invention is to provide a device that will accommodate standard, commercially available lettering pens.

'Still another object of this invention is to provide a device in which the writing instrument can be easily removed and replaced.

In general, according to this invention, the foregoing objects are accomplished by the device described in the following specifications and claims.

IN THE DRAWINGS:

FIG. 1 is a pictorial view of the penholder with part of a recorder.

FIG. 2 is a top plan view of the penholder.

FIG. 3 is a side elevation of the penholder.

Referring to FIGS. 1, 2 and 3, penholder 2 is attached to the recording instrument 4 by fitting pivot pin 6 into existing pivot sockets or bearings on the recorder 4. Penholder 2 is firmly attached to pivot pin 6 by set screw 8. Lettering pen [0 fits into opening 12 and is removed or replaced by adjusting set screw 14. In FIG.

2, penholder 2 is illustrated as being set somewhat off center on pivot pm 6 to show that its position can be adjusted if necessary. In some cases, depending on the position of the pivot sockets or bearings, the penholder has to be in the offset position so that the pen can write to the edge of the chart. Although the penholder illustrated in the drawing was constructed of aluminum with steel set-screws and pivot pin, it is understood that other durable materials can be used within the scope of the invention. For convenience and simplicity, lettering pen 10 was the reservoir type with a self contained cleaning plunger.

I claim:

1. In a device for holding a pen for scribing on a chart recorder, said device being pivotally supported in pivot sockets at one end by a pin perpendicular to the lateral plane of the device and having at the other end means for accommodating a scribing means, the improvement for adjusting the scribing means to an offset position beyond the extremes of the horizontal traverse of the pivot sockets of the recorder, thus providing means for the device to scribe to the edge of the chart, which improvement comprises means for adjusting the position of the device on the pivot pin and means for holding the device in any selected position on the pivot pin, the further improvement wherein the scribing means contains an integral, easily removable, self-cleaning pen and ink well thus precluding the need for a remote ink supply and siphoning system and for cleaning means, and the still further improvement wherein the device is constructed of material that is heavy enough to insure continuous scribing and light enough to insure against damage to the chart paper.

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