US 2211312 A
Description (OCR text may contain errors)
Aug. 13, 1940. s. D. BARLOW ET AL MARKING DEVICE Filed March 14, 1940 5 WWW vfiw mms a Y B AT'IORNEY Patented Aug. .13, 1940 PATENT OFFICE MARKING DEVICE Sldney D. Barlow and Philip Sussman,
Bronx, N. Y.
Application March 14, 1940, Serial No. 323,876
This invention relates to marking devices and is illustrated particularly in connection with marking devices particularly intended to mark fabrics.
This invention constitutes an improvement upon our prior invention disclosed in Patent #2,106,046, such invention comprising generally a cylinder adapted to contain a marking fluid and divided by a partition wall into a storage chamber and a compression chamber, the two chambers being connected by a valved opening, construction being such that liquid may be drawn from the storage chamber into the compression chamber when required.
With such a construction the feeding of liquid from the storage chamber'lnto the compression chamber requires displacement in the storage chamber. It is not desirable, however, to admit air to the chamber in contact with the marking fluid as it tends to dry out the fluid and interfere with the proper operation of the device.
It is an object of this invention to provide a markeri'n which the fluid may be readily fed from the supply chamber to the compression v chamber atall times without any air coming in contact with the supply of fluid.
It is a further object to provide a marker which may be relied upon at all times to discharge a proper quantity of marking fluid to the marking tip in suitable condition for marking and in which the entire supplyof liquid in the supply chamber may be utilized without any danger of drying out or clogging.
The invention accordingly comprises an article of manufacture possessing the features, properties and the relation of elements which will be exemplified inthe article hereinafter described and the scope of the application of which will be indicated in the claims.
For a fuller understanding of the nature and objects of the invention, reference, should be had to the following detailed description, taken in connection with the accompanying drawing, in which:
Fig. 1 is a vertical section through a device embodying this invention with the supply chamber from the compression chamber has been re-' a collar i4 screws over the end of the stud ii and surrounds the plunger i3 to confine about the plunger packing material i5 to make a fluid tight sliding joint about the outer surface of the plunger. The plunger i3 carries at its inner end a nut i6 engaging an inner face I1 and the stud ii to prevent the complete withdrawal of the plunger. The outer end of the plunger i3 carries a marking tip l8 which is here generally illustrated and which may be of the form shownin go my prior patent or any other suitable form. The interior of the cylindrical body ii] is divided by a wall into two chambers, one of which designated by the numeral 2| is a storage chamber and the other designated by thenumeral 22 is a compression chamber. These two are connected by ports 23 which, however, are closed by a valve 24 which is spring pressed upwardly by a spring 25. Thus it will be seen that as the plunger I3 is forced into the chamber 22, the 30,
valve 24 being closed, the liquid will be forced out to the tip I8, but if the plunger is pulled outwardly a suction will be imparted upon the valve 24 which will open it and permit fluid to pass from the chamber 2i to the chamber 22 for 5 replacement. 7
The upper end of the cylindrical body it carries a cap 21 which screws into the end of the tube and is provided with a central opening '28. A screw 29 having a head 30 and a central bore El is adapted to screw into the opening 26.
With the cylindrical body there is provided a cylindrical bag 32 which is preferably of substantially the shape and size of the interior of the storage chamber. This bag is closed at its lower end and has its open upper end bent inwardly as shown at 33 and firmly clamped between washers 34 and 35, which are held in place by the head 30 ofthe screw 29. It will be understood that the opening in the tip I 8 will be such as to discharge the quantity of liquid required for marking and that the opening III is suflicient only to provide a vent for the storage chamber.
The operation of the device is as follows:--
in this position the tip l8 may be grasped by the fingers and pulled outwardly to its initial position. As it is pulled outwardly a quantity of liquid is drawn from the chamber 2! into the chamber 22 through the check valve 24. During this operation the flexible bag 32 is drawn downwardly by the inrush of a quantity of air through the vent 3| equivalent in volume to the volume 01' the fluid discharge. Thereafter the marker may be again used until the piston is again in its most retracted position and may be drawn out again repeatedly untilfinally all of the fluid in the storage chamber is exhausted. When it is desired to replenish the supply of fluid in the device the cap 21 may be removed and the bag 32 may be recompressed and the supply chamber 2| may be refilled with fluid, whereupon the parts may be replaced and used again in the manner already described.
It the device is used in a construction having a gravity feed, the partition 20 and the valve 24 may be omitted. In such case the tip l3 need not be telescopic.
If the device is used for the marking of other articles, the solid tip herein illustrated may be replaced by any other type of device that is adapted to feed and distribute the fluid.
Since certain changes .may be made in the above construction and difierent embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.
It is also to be understood that the following claims are intended to cover all 01 the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.
Having described our invention, what we claim as new and desire to secure'by letters Patent. is:
1. A marker comprising a compression chamber, a hollow piston working in said chamber and carrying a marker tip upon its outer end, a storage chamber adjacent to said compression chamber, a check valve connecting said storage chamber to said compression chamber, a vent in .said storage chamber for permitting the entrance of air to replace fluid discharge from the storage chamber and means contained within the storage chamber for preventing contact between the fluid stored within the storage chamher and the air entering through the vent.
2. A device in accordance with claim 1 in which the last mentioned means comprises a flexible bag having'an open end closed around said vent and having its body within said storage chamber.
3. A marker comprising a compression chamber. a hollow piston working in said chamber and carrying a marker tip upon its outer end, a storage chamber adjacent to said compression chamber, said storage chamber having a removable end wall provided with an opening therein, a hollow stud screwed into said opening, said stud having a flange upon the inside of the chamber, a flexible bag within said chamber having its open end held between said flange and said end wall whereby as fluid is discharged from said storage chamber it may be replaced by air entering into said bag and as said bag is filled with air it may expand to replace the fluid.
4. A marker comprising a chamber adapted to contain a marking fluid, a marking tip on one end of said chamber, a vent in the chamber for permitting the entrance of air to replace fluid discharged from the chamber and a collapsible non-elastic member within said chamber having an opening sealed to the inside of said vent opening, whereby the air entering said vent passes only into said non-elastic member to prevent contact between said incoming air and said marking fluid.
SIDNEY D. BARLOW.