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Publication numberUS827347 A
Publication typeGrant
Publication dateJul 31, 1906
Filing dateAug 1, 1905
Priority dateAug 1, 1905
Publication numberUS 827347 A, US 827347A, US-A-827347, US827347 A, US827347A
InventorsJohn Morrison Campbell
Original AssigneeJohn Morrison Campbell
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 827347 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

PAT'BNTBD JULY s1, 190s.

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l STAMP. l


v Specification `of Letters Patent.

Patented 311151.31, 190e.

implication led August 1l 1905. Serial No. u272,1 56.

To. all whom it may concern:

Be it known that I, JOHN MORRISON CAMP- BELL, `a citizen of the United States, and a resident 'of Lombard, in the county of Dupage and State Of Illinois, have invented a new and Improved Stamp, of whichthe following is a full, clear, and exact description.

This invention relates to hand-operated stamps such as found upon desks in offices for the purpose of aiiixing dates or other printed matter' to papers or envelops.

The object of the invention is to provide a stamp of this class with an improved inking device, to the endV that the stamp or type may uickly, neatly, and thoroughly and so that a istinct and uniform impression will be produced. l

' Reference is to be had to the accompanying drawings, `forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views, Figure 1 is a side elevation of a stamp to which my invention has been applied. Fig.

2 is a section taken substantially upon the line 2 2 of Fig. 3. Fig. 3 is a vertical transverse section takenupon the line 3 3 of Fig. 1. Fig. 4 1s a plan view of the inking-pad, certain parts being represented as broken away or shown in section; and Fig. 5 is a transverse section through the pad and its contiguous parts, taken substantially upon the line 5 5 of Referring more particularly to the parts, 1 represents the frame of the stamp, which comprises a pair of oppositely-disposed side plates or legs 2, which support a pad box'or casing 3, preferably formed'integrally therebetween, as illustrated. From the `upper side of the pad-casing 3 a tubular guide 4 projects vertically, as shown, and upon this guide there is slidably mounted a handle 5, which telescopes therewith in a common manner, the helical s ring 6 being mounted within the guide 4, w ich affords means for normally maintaining the handle 5 in van elevated position ina well-known manner. To the lower extremity of the handle 5 a yoke 7 is attached, which is formed with verticallydepending arms 8, and between these arms a horizontal pin 9 extends, the said pin passing through vertical guide-slots 10, formed in the aforesaid side plates 2. Upon the pin or shaft 9 a carriage 11 is mounted, the body 12 within the casing 3.

riage 11 is 'formed with downwardlyeprojecting wings 15, which are provided with camgrooves 16, as shown. These wings-lie adjacentto the inner faces of the side plates 2' and coperatewith 'the usual pins 17, so as vtowinvert the carriage as the handle 5 is depressed in a well-'known manner. From this arrange'- ment it'will Abe seen that the spring' Anor-' mally operates to maintain the printing-plate 14 against the face of a pad 18, which is mounted in the pad-casing 3, as shown. This pad 18 is preferably formed of a facing-sheet of some absorbent material, such as felt. lThis facing-piece is received against a backing or grid 19. This grid consists of a plate of any material, but preferably of plate-steel or similar material, provided with a plurality of slots, grooves, or perforations 20, as shown,

The edges of this plate 19 are preferably bent f sition against the backing plate or grid 19, I

provide a retainer 22. This retainer prefer-y ably consists of a resilient wire bent into a rectangular shape conforming to the interior of the casing 3. When the parts are assembled, this retainer has a relative position, (illustrated most clearly in Figs. 4 and 5 constituting a binding around the edge of the pad. This retainer of course tends by its own resiliency to expand, and this affords means for holding it in position when so placed..

From the arrangement described it will be4 seen that by reason of the flanges 21 at the back ofthe grid 19 a chamber 23 is formed the pad to be supplied with ink in a convenient manner. For this purpose' the upper wall ofthe casing 3 is preferably punched upwardly when it is formed, so as to rovide'a nipple 24, the same being provide with an opening through which the ink may be introduced. I 1 n As indicated most clearly in Figs. 4 and 5, the part of the grid 19 beneathv the nipple 24 is not provided with the perforations 20. In this arrangement whenthe ink falls upon the plate it spreads in all directions and yseeps i05- gradually through the perforations at different parts of the plate. In this way the ink becomes very well distributed before being. absorbed by the pad. This arrangement conduces very much toward producing a uni- I ro` This chamber enables i IOO formity in the impression from the plate 14, overcoming effectually the usual eiiect of blurring following immediately upon the reinking of the pad. Furthermore, the eiiect of reinking the pad in the manner suggested is much prolonged by the device described.

In order to revent the hand of the person operating the handle 5 from coming into contact with the nipple 24 when the handle is depressed, I provide a laterally-projecting ear 26, which is integral with the body of the yoke 7 extending therefrom, as shown. This ear 26 lies directly above the nipple 24 and when the handle is depressed constitutes a covering for the nipple which effectively prevents ones fingers from coming into contact with the nipple, as will be readily understood. Having thus described my invention, I

claim as new and desire to Patent- In a stamp in combination, a casing having an opening in the upper side thereof through which ink may be introduced, a pad within said casing, a printing-plate normally held against said pad, and a depressible handle adapted to actuate said printing-plate and having a laterally-projecting ear adapted to cover said opening when said handle is de ressed.

n testimony whereof I have signed my name to this speciiication in the presence of two subscribing witnesses.


secure by Letters Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3364856 *Nov 22, 1965Jan 23, 1968Cubic CorpMarking device having a pad inker and tumbler bed
US4432281 *Mar 10, 1982Feb 21, 1984M & R Seal Press Co., Inc.Self-inking stamping device
US4852489 *Nov 18, 1987Aug 1, 1989M&R Marking Systems, Inc.Self-inking stamping device
US5517916 *Sep 14, 1994May 21, 1996M&R Marking Systems, Inc.Self-inking stamp
US7124684 *Nov 16, 2005Oct 24, 2006Petersen Craig JInk pad holder for self-inking stamp
US9132683 *May 14, 2013Sep 15, 2015Trodat GmbhHand stamp
US9168775 *May 14, 2013Oct 27, 2015Trodat GmbhSealed stamp cartridge and round stamp movable into positioning setting for rotation of printing plate about the axis of movement
US20130305940 *May 14, 2013Nov 21, 2013Trodat GmbhRound Stamp
US20130312627 *May 14, 2013Nov 28, 2013Trodat GmbhHand Stamp
WO2007058666A1 *Feb 17, 2006May 24, 2007Craig PetersenInk pad holder for self-inking stamp
Cooperative ClassificationB41K1/40